15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- SemaType.cpp - Semantic Analysis for Types -----------------------===// 25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// The LLVM Compiler Infrastructure 45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 50bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// This file is distributed under the University of Illinois Open Source 60bc735ffcfb223c0186419547abaa5c84482663eChris Lattner// License. See LICENSE.TXT for details. 75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// This file implements type-related semantic analysis. 115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// 125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===// 135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 14651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines#include "TypeLocBuilder.h" 15658cd2c287b1a0b419f51cd18e5a48d4560d1c56David Blaikie#include "clang/AST/ASTConsumer.h" 165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/AST/ASTContext.h" 1736f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor#include "clang/AST/ASTMutationListener.h" 18a8f32e0965ee19ecc53cd796e34268377a20357cDouglas Gregor#include "clang/AST/CXXInheritance.h" 19980e508ca70d6de75d2abfd96b4681fc98bb2698Steve Naroff#include "clang/AST/DeclObjC.h" 202943aed177b33ae3f14273b11a7b398e5276ec62Douglas Gregor#include "clang/AST/DeclTemplate.h" 2155fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/AST/Expr.h" 224adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis#include "clang/AST/TypeLoc.h" 2351bd803fbdade51d674598ed45da3d54190a656cJohn McCall#include "clang/AST/TypeLocVisitor.h" 2491a0cc913ecc5619b76d2e40742fd09725be8c56Anders Carlsson#include "clang/Basic/PartialDiagnostic.h" 25d18f9f965bcfe56edcdf9b0d8375ffaad9866b3fCharles Davis#include "clang/Basic/TargetInfo.h" 2687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar#include "clang/Lex/Preprocessor.h" 2719510856727e0e14a3696b2a72c35163bff2a71fJohn McCall#include "clang/Sema/DeclSpec.h" 28f85e193739c953358c865005855253af4f68a497John McCall#include "clang/Sema/DelayedDiagnostic.h" 29d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor#include "clang/Sema/Lookup.h" 3055fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Sema/ScopeInfo.h" 314967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar#include "clang/Sema/SemaInternal.h" 3255fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Sema/Template.h" 334994d2d50ceacdc8908f750c55589c0a20942a0aSebastian Redl#include "llvm/ADT/SmallPtrSet.h" 348c952cd40ccec9d720931f27e7d722fed207d536Richard Smith#include "llvm/ADT/SmallString.h" 354967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar#include "llvm/ADT/StringSwitch.h" 3687c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor#include "llvm/Support/ErrorHandling.h" 37ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman 385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 40fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballmanenum TypeDiagSelector { 41fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman TDS_Function, 42fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman TDS_Pointer, 43fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman TDS_ObjCObjOrBlock 44fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman}; 45fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman 465db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner/// isOmittedBlockReturnType - Return true if this declarator is missing a 4791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier/// return type because this is a omitted return type on a block literal. 488ce35b095e8fca45e04c1bda14ed0548ce7536adSebastian Redlstatic bool isOmittedBlockReturnType(const Declarator &D) { 495db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner if (D.getContext() != Declarator::BlockLiteralContext || 508ce35b095e8fca45e04c1bda14ed0548ce7536adSebastian Redl D.getDeclSpec().hasTypeSpecifier()) 515db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner return false; 5291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 535db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner if (D.getNumTypeObjects() == 0) 54a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner return true; // ^{ ... } 5591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 565db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner if (D.getNumTypeObjects() == 1 && 575db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner D.getTypeObject(0).Kind == DeclaratorChunk::Function) 58a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner return true; // ^(int X, float Y) { ... } 5991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 605db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner return false; 615db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner} 625db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner 632792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall/// diagnoseBadTypeAttribute - Diagnoses a type attribute which 642792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall/// doesn't apply to the given type. 652792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCallstatic void diagnoseBadTypeAttribute(Sema &S, const AttributeList &attr, 662792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall QualType type) { 67fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman TypeDiagSelector WhichType; 68fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman bool useExpansionLoc = true; 692792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall switch (attr.getKind()) { 70fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman case AttributeList::AT_ObjCGC: WhichType = TDS_Pointer; break; 71fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman case AttributeList::AT_ObjCOwnership: WhichType = TDS_ObjCObjOrBlock; break; 722792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall default: 732792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall // Assume everything else was a function attribute. 74fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman WhichType = TDS_Function; 75fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman useExpansionLoc = false; 762792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall break; 772792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall } 782792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 792792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall SourceLocation loc = attr.getLoc(); 805f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef name = attr.getName()->getName(); 812792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 822792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall // The GC attributes are usually written with macros; special-case them. 836bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines IdentifierInfo *II = attr.isArgIdent(0) ? attr.getArgAsIdent(0)->Ident 846bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines : nullptr; 85624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman if (useExpansionLoc && loc.isMacroID() && II) { 86624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman if (II->isStr("strong")) { 87834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall if (S.findMacroSpelling(loc, "__strong")) name = "__strong"; 88624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman } else if (II->isStr("weak")) { 89834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall if (S.findMacroSpelling(loc, "__weak")) name = "__weak"; 902792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall } 912792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall } 922792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 93fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman S.Diag(loc, diag::warn_type_attribute_wrong_type) << name << WhichType 94fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman << type; 952792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall} 962792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 97711c52bb20d0c69063b52a99826fb7d2835501f1John McCall// objc_gc applies to Objective-C pointers or, otherwise, to the 98711c52bb20d0c69063b52a99826fb7d2835501f1John McCall// smallest available pointer type (i.e. 'void*' in 'void**'). 99711c52bb20d0c69063b52a99826fb7d2835501f1John McCall#define OBJC_POINTER_TYPE_ATTRS_CASELIST \ 1008e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ObjCGC: \ 1018e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ObjCOwnership 102711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 1034967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar// Calling convention attributes. 1044967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar#define CALLING_CONV_ATTRS_CASELIST \ 1058e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_CDecl: \ 1068e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_FastCall: \ 1078e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_StdCall: \ 1088e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ThisCall: \ 1098e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_Pascal: \ 1104967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case AttributeList::AT_SwiftCall: \ 111176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines case AttributeList::AT_VectorCall: \ 112e8519c31a6ef853b627d557702ac1890f18ce2c9Charles Davis case AttributeList::AT_MSABI: \ 113e8519c31a6ef853b627d557702ac1890f18ce2c9Charles Davis case AttributeList::AT_SysVABI: \ 114263366f9241366f29ba65b703120f302490c39ffDerek Schuff case AttributeList::AT_Pcs: \ 1154967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case AttributeList::AT_IntelOclBicc: \ 1164967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case AttributeList::AT_PreserveMost: \ 1174967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case AttributeList::AT_PreserveAll 1184967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 1194967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar// Function type attributes. 1204967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar#define FUNCTION_TYPE_ATTRS_CASELIST \ 1214967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case AttributeList::AT_NoReturn: \ 1224967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case AttributeList::AT_Regparm: \ 1234967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar CALLING_CONV_ATTRS_CASELIST 124aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman 125aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman// Microsoft-specific type qualifiers. 126aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman#define MS_TYPE_ATTRS_CASELIST \ 127aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman case AttributeList::AT_Ptr32: \ 128aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman case AttributeList::AT_Ptr64: \ 129aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman case AttributeList::AT_SPtr: \ 130aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman case AttributeList::AT_UPtr 131711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 13287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar// Nullability qualifiers. 13387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar#define NULLABILITY_TYPE_ATTRS_CASELIST \ 13487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case AttributeList::AT_TypeNonNull: \ 13587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case AttributeList::AT_TypeNullable: \ 13687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case AttributeList::AT_TypeNullUnspecified 13787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 138711c52bb20d0c69063b52a99826fb7d2835501f1John McCallnamespace { 139711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// An object which stores processing state for the entire 140711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// GetTypeForDeclarator process. 141711c52bb20d0c69063b52a99826fb7d2835501f1John McCall class TypeProcessingState { 142711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Sema &sema; 143711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 144711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// The declarator being processed. 145711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator; 146711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 147711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// The index of the declarator chunk we're currently processing. 148711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// May be the total number of valid chunks, indicating the 149711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// DeclSpec. 150711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned chunkIndex; 151711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 152711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// Whether there are non-trivial modifications to the decl spec. 153711c52bb20d0c69063b52a99826fb7d2835501f1John McCall bool trivial; 154711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 1557ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall /// Whether we saved the attributes in the decl spec. 1567ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall bool hasSavedAttrs; 1577ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall 158711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// The original set of attributes on the DeclSpec. 1595f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<AttributeList*, 2> savedAttrs; 160711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 161711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// A list of attributes to diagnose the uselessness of when the 162711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// processing is complete. 1635f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<AttributeList*, 2> ignoredTypeAttrs; 164711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 165711c52bb20d0c69063b52a99826fb7d2835501f1John McCall public: 166711c52bb20d0c69063b52a99826fb7d2835501f1John McCall TypeProcessingState(Sema &sema, Declarator &declarator) 167711c52bb20d0c69063b52a99826fb7d2835501f1John McCall : sema(sema), declarator(declarator), 168711c52bb20d0c69063b52a99826fb7d2835501f1John McCall chunkIndex(declarator.getNumTypeObjects()), 1697ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall trivial(true), hasSavedAttrs(false) {} 170711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 171711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Sema &getSema() const { 172711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return sema; 173711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 174711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 175711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &getDeclarator() const { 176711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return declarator; 177711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 178711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 179b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall bool isProcessingDeclSpec() const { 180b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall return chunkIndex == declarator.getNumTypeObjects(); 181b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 182b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 183711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned getCurrentChunkIndex() const { 184711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return chunkIndex; 185711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 186711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 187711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void setCurrentChunkIndex(unsigned idx) { 188711c52bb20d0c69063b52a99826fb7d2835501f1John McCall assert(idx <= declarator.getNumTypeObjects()); 189711c52bb20d0c69063b52a99826fb7d2835501f1John McCall chunkIndex = idx; 190711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 191711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 192711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *&getCurrentAttrListRef() const { 193b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall if (isProcessingDeclSpec()) 194711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return getMutableDeclSpec().getAttributes().getListRef(); 195711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return declarator.getTypeObject(chunkIndex).getAttrListRef(); 196711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 197711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 198711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// Save the current set of attributes on the DeclSpec. 199711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void saveDeclSpecAttrs() { 200711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Don't try to save them multiple times. 2017ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall if (hasSavedAttrs) return; 202711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 203711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclSpec &spec = getMutableDeclSpec(); 204711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (AttributeList *attr = spec.getAttributes().getList(); attr; 205711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr = attr->getNext()) 206711c52bb20d0c69063b52a99826fb7d2835501f1John McCall savedAttrs.push_back(attr); 207711c52bb20d0c69063b52a99826fb7d2835501f1John McCall trivial &= savedAttrs.empty(); 2087ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall hasSavedAttrs = true; 209711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 210711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 211711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// Record that we had nowhere to put the given type attribute. 212711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// We will diagnose such attributes later. 213711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void addIgnoredTypeAttr(AttributeList &attr) { 214711c52bb20d0c69063b52a99826fb7d2835501f1John McCall ignoredTypeAttrs.push_back(&attr); 215711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 216711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 217711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// Diagnose all the ignored type attributes, given that the 218711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// declarator worked out to the given type. 219711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void diagnoseIgnoredTypeAttrs(QualType type) const { 22087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar for (auto *Attr : ignoredTypeAttrs) 22187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar diagnoseBadTypeAttribute(getSema(), *Attr, type); 222711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 223711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 224711c52bb20d0c69063b52a99826fb7d2835501f1John McCall ~TypeProcessingState() { 225711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (trivial) return; 226711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 227711c52bb20d0c69063b52a99826fb7d2835501f1John McCall restoreDeclSpecAttrs(); 228711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 229711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 230711c52bb20d0c69063b52a99826fb7d2835501f1John McCall private: 231711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclSpec &getMutableDeclSpec() const { 232711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return const_cast<DeclSpec&>(declarator.getDeclSpec()); 233711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 234711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 235711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void restoreDeclSpecAttrs() { 2367ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall assert(hasSavedAttrs); 2377ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall 2387ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall if (savedAttrs.empty()) { 2396bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines getMutableDeclSpec().getAttributes().set(nullptr); 2407ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall return; 2417ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall } 2427ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall 243711c52bb20d0c69063b52a99826fb7d2835501f1John McCall getMutableDeclSpec().getAttributes().set(savedAttrs[0]); 244711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = 0, e = savedAttrs.size() - 1; i != e; ++i) 245711c52bb20d0c69063b52a99826fb7d2835501f1John McCall savedAttrs[i]->setNext(savedAttrs[i+1]); 2466bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines savedAttrs.back()->setNext(nullptr); 247711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 248711c52bb20d0c69063b52a99826fb7d2835501f1John McCall }; 2494967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar} // end anonymous namespace 250711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 251711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void spliceAttrIntoList(AttributeList &attr, AttributeList *&head) { 252711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setNext(head); 253711c52bb20d0c69063b52a99826fb7d2835501f1John McCall head = &attr; 254711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 255711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 256711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void spliceAttrOutOfList(AttributeList &attr, AttributeList *&head) { 257711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (head == &attr) { 258711c52bb20d0c69063b52a99826fb7d2835501f1John McCall head = attr.getNext(); 259711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 26004a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall } 261711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 262711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *cur = head; 263711c52bb20d0c69063b52a99826fb7d2835501f1John McCall while (true) { 264711c52bb20d0c69063b52a99826fb7d2835501f1John McCall assert(cur && cur->getNext() && "ran out of attrs?"); 265711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (cur->getNext() == &attr) { 266711c52bb20d0c69063b52a99826fb7d2835501f1John McCall cur->setNext(attr.getNext()); 267711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 268711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 269711c52bb20d0c69063b52a99826fb7d2835501f1John McCall cur = cur->getNext(); 270711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 271711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 272711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 273711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void moveAttrFromListToList(AttributeList &attr, 274711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *&fromList, 275711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *&toList) { 276711c52bb20d0c69063b52a99826fb7d2835501f1John McCall spliceAttrOutOfList(attr, fromList); 277711c52bb20d0c69063b52a99826fb7d2835501f1John McCall spliceAttrIntoList(attr, toList); 278711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 279711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 280f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith/// The location of a type attribute. 281f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smithenum TypeAttrLocation { 282f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith /// The attribute is in the decl-specifier-seq. 283f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith TAL_DeclSpec, 284f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith /// The attribute is part of a DeclaratorChunk. 285f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith TAL_DeclChunk, 286f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith /// The attribute is immediately after the declaration's name. 287f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith TAL_DeclName 288f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith}; 289f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith 290711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void processTypeAttrs(TypeProcessingState &state, 291f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith QualType &type, TypeAttrLocation TAL, 292711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *attrs); 293711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 294711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleFunctionTypeAttr(TypeProcessingState &state, 295711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 296711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &type); 297711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 298aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballmanstatic bool handleMSPointerTypeQualifierAttr(TypeProcessingState &state, 299aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman AttributeList &attr, 300aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman QualType &type); 301aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman 302711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleObjCGCTypeAttr(TypeProcessingState &state, 303711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, QualType &type); 304711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 305b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidisstatic bool handleObjCOwnershipTypeAttr(TypeProcessingState &state, 306f85e193739c953358c865005855253af4f68a497John McCall AttributeList &attr, QualType &type); 307f85e193739c953358c865005855253af4f68a497John McCall 308711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleObjCPointerTypeAttr(TypeProcessingState &state, 309711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, QualType &type) { 3108e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr.getKind() == AttributeList::AT_ObjCGC) 311f85e193739c953358c865005855253af4f68a497John McCall return handleObjCGCTypeAttr(state, attr, type); 3128e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt assert(attr.getKind() == AttributeList::AT_ObjCOwnership); 313b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis return handleObjCOwnershipTypeAttr(state, attr, type); 314711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 315711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 316b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall/// Given the index of a declarator chunk, check whether that chunk 317b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall/// directly specifies the return type of a function and, if so, find 318b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall/// an appropriate place for it. 319b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall/// 320b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall/// \param i - a notional index which the search will start 321b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall/// immediately inside 32287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// 32387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// \param onlyBlockPointers Whether we should only look into block 32487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// pointer types (vs. all pointer types). 325b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCallstatic DeclaratorChunk *maybeMovePastReturnType(Declarator &declarator, 32687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar unsigned i, 32787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool onlyBlockPointers) { 328b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall assert(i <= declarator.getNumTypeObjects()); 329b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 3306bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines DeclaratorChunk *result = nullptr; 331b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 332b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // First, look inwards past parens for a function declarator. 333b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall for (; i != 0; --i) { 334b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall DeclaratorChunk &fnChunk = declarator.getTypeObject(i-1); 335b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall switch (fnChunk.Kind) { 336b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Paren: 337b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall continue; 338b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 339b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // If we find anything except a function, bail out. 340b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Pointer: 341b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::BlockPointer: 342b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Array: 343b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Reference: 344b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::MemberPointer: 3454967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: 346b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall return result; 347b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 348b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // If we do find a function declarator, scan inwards from that, 34987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // looking for a (block-)pointer declarator. 350b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Function: 351b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall for (--i; i != 0; --i) { 35287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DeclaratorChunk &ptrChunk = declarator.getTypeObject(i-1); 35387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar switch (ptrChunk.Kind) { 354b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Paren: 355b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Array: 356b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Function: 357b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Reference: 3584967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: 359b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall continue; 36087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 36187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::MemberPointer: 36287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Pointer: 36387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (onlyBlockPointers) 36487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 36587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 36687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // fallthrough 36787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 368b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::BlockPointer: 36987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar result = &ptrChunk; 370b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall goto continue_outer; 371b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 372b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall llvm_unreachable("bad declarator chunk kind"); 373b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 374b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 375b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // If we run out of declarators doing that, we're done. 376b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall return result; 377b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 378b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall llvm_unreachable("bad declarator chunk kind"); 379b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 380b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // Okay, reconsider from our new point. 381b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall continue_outer: ; 382b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 383b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 384b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // Ran out of chunks, bail out. 385b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall return result; 386b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall} 387b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 388711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Given that an objc_gc attribute was written somewhere on a 389711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// declaration *other* than on the declarator itself (for which, use 390711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// distributeObjCPointerTypeAttrFromDeclarator), and given that it 391711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// didn't apply in whatever position it was written in, try to move 392711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// it to a more appropriate position. 393711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void distributeObjCPointerTypeAttr(TypeProcessingState &state, 394711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 395711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType type) { 396711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 397b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 398b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // Move it to the outermost normal or block pointer declarator. 399711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = state.getCurrentChunkIndex(); i != 0; --i) { 400711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &chunk = declarator.getTypeObject(i-1); 401711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (chunk.Kind) { 402711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Pointer: 403b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::BlockPointer: { 404b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // But don't move an ARC ownership attribute to the return type 405b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // of a block. 4066bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines DeclaratorChunk *destChunk = nullptr; 407b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall if (state.isProcessingDeclSpec() && 408b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall attr.getKind() == AttributeList::AT_ObjCOwnership) 40987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar destChunk = maybeMovePastReturnType(declarator, i - 1, 41087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /*onlyBlockPointers=*/true); 411b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall if (!destChunk) destChunk = &chunk; 412b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 413711c52bb20d0c69063b52a99826fb7d2835501f1John McCall moveAttrFromListToList(attr, state.getCurrentAttrListRef(), 414b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall destChunk->getAttrListRef()); 415711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 416b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 417711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 418711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Paren: 419711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Array: 420711c52bb20d0c69063b52a99826fb7d2835501f1John McCall continue; 421711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 422b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // We may be starting at the return type of a block. 423b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Function: 424b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall if (state.isProcessingDeclSpec() && 425b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall attr.getKind() == AttributeList::AT_ObjCOwnership) { 42687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (DeclaratorChunk *dest = maybeMovePastReturnType( 42787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar declarator, i, 42887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /*onlyBlockPointers=*/true)) { 429b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall moveAttrFromListToList(attr, state.getCurrentAttrListRef(), 430b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall dest->getAttrListRef()); 431b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall return; 432b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 433b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 434b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall goto error; 435b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 436711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Don't walk through these. 437711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Reference: 438711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::MemberPointer: 4394967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: 440711c52bb20d0c69063b52a99826fb7d2835501f1John McCall goto error; 441711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 442711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 443711c52bb20d0c69063b52a99826fb7d2835501f1John McCall error: 4442792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 4452792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall diagnoseBadTypeAttribute(state.getSema(), attr, type); 446711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 447711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 448711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Distribute an objc_gc type attribute that was written on the 449711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// declarator. 450711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void 451711c52bb20d0c69063b52a99826fb7d2835501f1John McCalldistributeObjCPointerTypeAttrFromDeclarator(TypeProcessingState &state, 452711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 453711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 454711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 455711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 456711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // objc_gc goes on the innermost pointer to something that's not a 457711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // pointer. 458711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned innermost = -1U; 459711c52bb20d0c69063b52a99826fb7d2835501f1John McCall bool considerDeclSpec = true; 460711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = 0, e = declarator.getNumTypeObjects(); i != e; ++i) { 461711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &chunk = declarator.getTypeObject(i); 462711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (chunk.Kind) { 463711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Pointer: 464711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::BlockPointer: 465711c52bb20d0c69063b52a99826fb7d2835501f1John McCall innermost = i; 466ae278a3a57595349a411f6474938d4dd1b263a0eJohn McCall continue; 467711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 468711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Reference: 469711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::MemberPointer: 470711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Paren: 471711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Array: 4724967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: 473711c52bb20d0c69063b52a99826fb7d2835501f1John McCall continue; 474711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 475711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Function: 476711c52bb20d0c69063b52a99826fb7d2835501f1John McCall considerDeclSpec = false; 477711c52bb20d0c69063b52a99826fb7d2835501f1John McCall goto done; 478711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 479711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 480711c52bb20d0c69063b52a99826fb7d2835501f1John McCall done: 481711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 482711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // That might actually be the decl spec if we weren't blocked by 483711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // anything in the declarator. 484711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (considerDeclSpec) { 4857ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall if (handleObjCPointerTypeAttr(state, attr, declSpecType)) { 4867ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall // Splice the attribute into the decl spec. Prevents the 4877ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall // attribute from being applied multiple times and gives 4887ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall // the source-location-filler something to work with. 4897ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall state.saveDeclSpecAttrs(); 4907ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall moveAttrFromListToList(attr, declarator.getAttrListRef(), 4917ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall declarator.getMutableDeclSpec().getAttributes().getListRef()); 492711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 4937ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall } 494711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 495711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 496711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Otherwise, if we found an appropriate chunk, splice the attribute 497711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // into it. 498711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (innermost != -1U) { 499711c52bb20d0c69063b52a99826fb7d2835501f1John McCall moveAttrFromListToList(attr, declarator.getAttrListRef(), 500711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.getTypeObject(innermost).getAttrListRef()); 501711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 502711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 503711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 504711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Otherwise, diagnose when we're done building the type. 505711c52bb20d0c69063b52a99826fb7d2835501f1John McCall spliceAttrOutOfList(attr, declarator.getAttrListRef()); 506711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.addIgnoredTypeAttr(attr); 507711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 508711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 509711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// A function type attribute was written somewhere in a declaration 510711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// *other* than on the declarator itself or in the decl spec. Given 511711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// that it didn't apply in whatever position it was written in, try 512711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// to move it to a more appropriate position. 513711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void distributeFunctionTypeAttr(TypeProcessingState &state, 514711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 515711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType type) { 516711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 517711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 518711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Try to push the attribute from the return type of a function to 519711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // the function itself. 520711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = state.getCurrentChunkIndex(); i != 0; --i) { 521711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &chunk = declarator.getTypeObject(i-1); 522711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (chunk.Kind) { 523711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Function: 524711c52bb20d0c69063b52a99826fb7d2835501f1John McCall moveAttrFromListToList(attr, state.getCurrentAttrListRef(), 525711c52bb20d0c69063b52a99826fb7d2835501f1John McCall chunk.getAttrListRef()); 526711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 527711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 528711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Paren: 529711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Pointer: 530711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::BlockPointer: 531711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Array: 532711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Reference: 533711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::MemberPointer: 5344967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: 535711c52bb20d0c69063b52a99826fb7d2835501f1John McCall continue; 536711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 537711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 53891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 5392792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall diagnoseBadTypeAttribute(state.getSema(), attr, type); 540711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 541711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 542711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Try to distribute a function type attribute to the innermost 543711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// function chunk or type. Returns true if the attribute was 544711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// distributed, false if no location was found. 545711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool 546711c52bb20d0c69063b52a99826fb7d2835501f1John McCalldistributeFunctionTypeAttrToInnermost(TypeProcessingState &state, 547711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 548711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *&attrList, 549711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 550711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 551711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 552711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Put it on the innermost function chunk, if there is one. 553711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = 0, e = declarator.getNumTypeObjects(); i != e; ++i) { 554711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &chunk = declarator.getTypeObject(i); 555711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (chunk.Kind != DeclaratorChunk::Function) continue; 556711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 557711c52bb20d0c69063b52a99826fb7d2835501f1John McCall moveAttrFromListToList(attr, attrList, chunk.getAttrListRef()); 558711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 559711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 560711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 5615b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner return handleFunctionTypeAttr(state, attr, declSpecType); 562711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 563711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 564711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// A function type attribute was written in the decl spec. Try to 565711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// apply it somewhere. 566711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void 567711c52bb20d0c69063b52a99826fb7d2835501f1John McCalldistributeFunctionTypeAttrFromDeclSpec(TypeProcessingState &state, 568711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 569711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 570711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.saveDeclSpecAttrs(); 571711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 5725c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // C++11 attributes before the decl specifiers actually appertain to 5735c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // the declarators. Move them straight there. We don't support the 5745c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // 'put them wherever you like' semantics we allow for GNU attributes. 5755c52166525f8714c3e3a979b156ec23426947fd3Richard Smith if (attr.isCXX11Attribute()) { 5765c52166525f8714c3e3a979b156ec23426947fd3Richard Smith moveAttrFromListToList(attr, state.getCurrentAttrListRef(), 5775c52166525f8714c3e3a979b156ec23426947fd3Richard Smith state.getDeclarator().getAttrListRef()); 5785c52166525f8714c3e3a979b156ec23426947fd3Richard Smith return; 5795c52166525f8714c3e3a979b156ec23426947fd3Richard Smith } 5805c52166525f8714c3e3a979b156ec23426947fd3Richard Smith 581711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Try to distribute to the innermost. 582711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (distributeFunctionTypeAttrToInnermost(state, attr, 583711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.getCurrentAttrListRef(), 584711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declSpecType)) 585711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 586711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 587711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // If that failed, diagnose the bad attribute when the declarator is 588711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // fully built. 589711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.addIgnoredTypeAttr(attr); 590711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 591711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 592711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// A function type attribute was written on the declarator. Try to 593711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// apply it somewhere. 594711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void 595711c52bb20d0c69063b52a99826fb7d2835501f1John McCalldistributeFunctionTypeAttrFromDeclarator(TypeProcessingState &state, 596711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 597711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 598711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 599711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 600711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Try to distribute to the innermost. 601711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (distributeFunctionTypeAttrToInnermost(state, attr, 602711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.getAttrListRef(), 603711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declSpecType)) 604711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 605711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 606711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // If that failed, diagnose the bad attribute when the declarator is 607711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // fully built. 608711c52bb20d0c69063b52a99826fb7d2835501f1John McCall spliceAttrOutOfList(attr, declarator.getAttrListRef()); 609711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.addIgnoredTypeAttr(attr); 610711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 611711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 612711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// \brief Given that there are attributes written on the declarator 613711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// itself, try to distribute any type attributes to the appropriate 614711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// declarator chunk. 615711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// 616711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// These are attributes like the following: 617711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// int f ATTR; 618711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// int (f ATTR)(); 619711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// but not necessarily this: 620711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// int f() ATTR; 621711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void distributeTypeAttrsFromDeclarator(TypeProcessingState &state, 622711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 623711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Collect all the type attributes from the declarator itself. 624711c52bb20d0c69063b52a99826fb7d2835501f1John McCall assert(state.getDeclarator().getAttributes() && "declarator has no attrs!"); 625711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *attr = state.getDeclarator().getAttributes(); 626711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *next; 627711c52bb20d0c69063b52a99826fb7d2835501f1John McCall do { 628711c52bb20d0c69063b52a99826fb7d2835501f1John McCall next = attr->getNext(); 629711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 6305c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // Do not distribute C++11 attributes. They have strict rules for what 6315c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // they appertain to. 6325c52166525f8714c3e3a979b156ec23426947fd3Richard Smith if (attr->isCXX11Attribute()) 6335c52166525f8714c3e3a979b156ec23426947fd3Richard Smith continue; 6345c52166525f8714c3e3a979b156ec23426947fd3Richard Smith 635711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (attr->getKind()) { 636711c52bb20d0c69063b52a99826fb7d2835501f1John McCall OBJC_POINTER_TYPE_ATTRS_CASELIST: 637711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeObjCPointerTypeAttrFromDeclarator(state, *attr, declSpecType); 638711c52bb20d0c69063b52a99826fb7d2835501f1John McCall break; 639711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 6408e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_NSReturnsRetained: 6414e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!state.getSema().getLangOpts().ObjCAutoRefCount) 642f85e193739c953358c865005855253af4f68a497John McCall break; 643f85e193739c953358c865005855253af4f68a497John McCall // fallthrough 644f85e193739c953358c865005855253af4f68a497John McCall 645711c52bb20d0c69063b52a99826fb7d2835501f1John McCall FUNCTION_TYPE_ATTRS_CASELIST: 646711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeFunctionTypeAttrFromDeclarator(state, *attr, declSpecType); 647711c52bb20d0c69063b52a99826fb7d2835501f1John McCall break; 648711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 649aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman MS_TYPE_ATTRS_CASELIST: 650aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman // Microsoft type attributes cannot go after the declarator-id. 651aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman continue; 652aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman 65387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar NULLABILITY_TYPE_ATTRS_CASELIST: 65487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Nullability specifiers cannot go after the declarator-id. 65587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 65687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Objective-C __kindof does not get distributed. 65787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case AttributeList::AT_ObjCKindOf: 65887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 65987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 660711c52bb20d0c69063b52a99826fb7d2835501f1John McCall default: 661711c52bb20d0c69063b52a99826fb7d2835501f1John McCall break; 662711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 663711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } while ((attr = next)); 664711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 665711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 666711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Add a synthetic '()' to a block-literal declarator if it is 667711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// required, given the return type. 668711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void maybeSynthesizeBlockSignature(TypeProcessingState &state, 669711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType declSpecType) { 670711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 671711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 672711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // First, check whether the declarator would produce a function, 673711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // i.e. whether the innermost semantic chunk is a function. 674711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (declarator.isFunctionDeclarator()) { 675711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // If so, make that declarator a prototyped declarator. 676711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.getFunctionTypeInfo().hasPrototype = true; 677711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 678711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 679711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 680da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // If there are any type objects, the type as written won't name a 681da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // function, regardless of the decl spec type. This is because a 682da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // block signature declarator is always an abstract-declarator, and 683da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // abstract-declarators can't just be parentheses chunks. Therefore 684da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // we need to build a function chunk unless there are no type 685da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // objects and the decl spec type is a function. 686711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!declarator.getNumTypeObjects() && declSpecType->isFunctionType()) 687711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 688711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 689da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // Note that there *are* cases with invalid declarators where 690da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // declarators consist solely of parentheses. In general, these 691da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // occur only in failed efforts to make function declarators, so 692da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // faking up the function chunk is still the right thing to do. 693711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 694711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Otherwise, we need to fake up a function declarator. 69596a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceLocation loc = declarator.getLocStart(); 696711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 697711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // ...and *prepend* it to the declarator. 69859c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara SourceLocation NoLoc; 699711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.AddInnermostTypeInfo(DeclaratorChunk::getFunction( 700176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*HasProto=*/true, 701176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*IsAmbiguous=*/false, 702176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*LParenLoc=*/NoLoc, 703176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*ArgInfo=*/nullptr, 704176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*NumArgs=*/0, 705176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*EllipsisLoc=*/NoLoc, 706176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*RParenLoc=*/NoLoc, 707176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*TypeQuals=*/0, 708176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*RefQualifierIsLvalueRef=*/true, 709176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*RefQualifierLoc=*/NoLoc, 710176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*ConstQualifierLoc=*/NoLoc, 711176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*VolatileQualifierLoc=*/NoLoc, 712176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*RestrictQualifierLoc=*/NoLoc, 713176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*MutableLoc=*/NoLoc, EST_None, 71487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /*ESpecRange=*/SourceRange(), 715176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*Exceptions=*/nullptr, 716176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*ExceptionRanges=*/nullptr, 717176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*NumExceptions=*/0, 718176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*NoexceptExpr=*/nullptr, 719176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines /*ExceptionSpecTokens=*/nullptr, 720176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines loc, loc, declarator)); 721711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 722711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // For consistency, make sure the state still has us as processing 723711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // the decl spec. 724711c52bb20d0c69063b52a99826fb7d2835501f1John McCall assert(state.getCurrentChunkIndex() == declarator.getNumTypeObjects() - 1); 725711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.setCurrentChunkIndex(declarator.getNumTypeObjects()); 72604a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall} 72704a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 728b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainarstatic void diagnoseAndRemoveTypeQualifiers(Sema &S, const DeclSpec &DS, 729b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar unsigned &TypeQuals, 730b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar QualType TypeSoFar, 731b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar unsigned RemoveTQs, 732b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar unsigned DiagID) { 733b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // If this occurs outside a template instantiation, warn the user about 734b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // it; they probably didn't mean to specify a redundant qualifier. 735b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar typedef std::pair<DeclSpec::TQ, SourceLocation> QualLoc; 736b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar for (QualLoc Qual : {QualLoc(DeclSpec::TQ_const, DS.getConstSpecLoc()), 7374967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar QualLoc(DeclSpec::TQ_restrict, DS.getRestrictSpecLoc()), 738b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar QualLoc(DeclSpec::TQ_volatile, DS.getVolatileSpecLoc()), 739b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar QualLoc(DeclSpec::TQ_atomic, DS.getAtomicSpecLoc())}) { 740b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar if (!(RemoveTQs & Qual.first)) 741b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar continue; 742b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar 743b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar if (S.ActiveTemplateInstantiations.empty()) { 744b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar if (TypeQuals & Qual.first) 745b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar S.Diag(Qual.second, DiagID) 746b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar << DeclSpec::getSpecifierName(Qual.first) << TypeSoFar 747b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar << FixItHint::CreateRemoval(Qual.second); 748b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar } 749b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar 750b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar TypeQuals &= ~Qual.first; 751b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar } 752b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar} 753b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar 7544967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar/// Return true if this is omitted block return type. Also check type 7554967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar/// attributes and type qualifiers when returning true. 7564967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainarstatic bool checkOmittedBlockReturnType(Sema &S, Declarator &declarator, 7574967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar QualType Result) { 7584967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (!isOmittedBlockReturnType(declarator)) 7594967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return false; 7604967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 7614967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Warn if we see type attributes for omitted return type on a block literal. 7624967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar AttributeList *&attrs = 7634967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar declarator.getMutableDeclSpec().getAttributes().getListRef(); 7644967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar AttributeList *prev = nullptr; 7654967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar for (AttributeList *cur = attrs; cur; cur = cur->getNext()) { 7664967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar AttributeList &attr = *cur; 7674967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Skip attributes that were marked to be invalid or non-type 7684967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // attributes. 7694967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (attr.isInvalid() || !attr.isTypeAttr()) { 7704967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar prev = cur; 7714967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar continue; 7724967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 7734967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(attr.getLoc(), 7744967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar diag::warn_block_literal_attributes_on_omitted_return_type) 7754967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar << attr.getName(); 7764967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Remove cur from the list. 7774967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (prev) { 7784967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar prev->setNext(cur->getNext()); 7794967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar prev = cur; 7804967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } else { 7814967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar attrs = cur->getNext(); 7824967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 7834967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 7844967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 7854967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Warn if we see type qualifiers for omitted return type on a block literal. 7864967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar const DeclSpec &DS = declarator.getDeclSpec(); 7874967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar unsigned TypeQuals = DS.getTypeQualifiers(); 7884967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar diagnoseAndRemoveTypeQualifiers(S, DS, TypeQuals, Result, (unsigned)-1, 7894967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar diag::warn_block_literal_qualifiers_on_omitted_return_type); 7904967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar declarator.getMutableDeclSpec().ClearTypeQualifiers(); 7914967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 7924967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return true; 7934967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar} 7944967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 79587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// Apply Objective-C type arguments to the given type. 79687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarstatic QualType applyObjCTypeArgs(Sema &S, SourceLocation loc, QualType type, 79787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ArrayRef<TypeSourceInfo *> typeArgs, 79887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceRange typeArgsRange, 79987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool failOnError = false) { 80087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // We can only apply type arguments to an Objective-C class type. 80187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar const auto *objcObjectType = type->getAs<ObjCObjectType>(); 80287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!objcObjectType || !objcObjectType->getInterface()) { 80387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(loc, diag::err_objc_type_args_non_class) 80487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << type 80587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << typeArgsRange; 80687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 80787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (failOnError) 80887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return QualType(); 80987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return type; 81087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 81187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 81287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // The class type must be parameterized. 81387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCInterfaceDecl *objcClass = objcObjectType->getInterface(); 81487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCTypeParamList *typeParams = objcClass->getTypeParamList(); 81587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!typeParams) { 81687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(loc, diag::err_objc_type_args_non_parameterized_class) 81787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << objcClass->getDeclName() 81887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << FixItHint::CreateRemoval(typeArgsRange); 81987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 82087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (failOnError) 82187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return QualType(); 82287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 82387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return type; 82487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 82587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 82687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // The type must not already be specialized. 82787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (objcObjectType->isSpecialized()) { 82887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(loc, diag::err_objc_type_args_specialized_class) 82987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << type 83087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << FixItHint::CreateRemoval(typeArgsRange); 83187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 83287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (failOnError) 83387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return QualType(); 83487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 83587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return type; 83687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 83787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 83887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Check the type arguments. 83987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SmallVector<QualType, 4> finalTypeArgs; 84087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar unsigned numTypeParams = typeParams->size(); 84187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool anyPackExpansions = false; 84287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar for (unsigned i = 0, n = typeArgs.size(); i != n; ++i) { 84387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TypeSourceInfo *typeArgInfo = typeArgs[i]; 84487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar QualType typeArg = typeArgInfo->getType(); 84587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 84687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Type arguments cannot have explicit qualifiers or nullability. 84787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // We ignore indirect sources of these, e.g. behind typedefs or 84887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // template arguments. 84987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (TypeLoc qual = typeArgInfo->getTypeLoc().findExplicitQualifierLoc()) { 85087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool diagnosed = false; 85187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceRange rangeToRemove; 85287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto attr = qual.getAs<AttributedTypeLoc>()) { 85387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar rangeToRemove = attr.getLocalSourceRange(); 85487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (attr.getTypePtr()->getImmediateNullability()) { 85587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar typeArg = attr.getTypePtr()->getModifiedType(); 85687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(attr.getLocStart(), 85787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar diag::err_objc_type_arg_explicit_nullability) 85887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << typeArg << FixItHint::CreateRemoval(rangeToRemove); 85987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar diagnosed = true; 86087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 86187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 86287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 86387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!diagnosed) { 86487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(qual.getLocStart(), diag::err_objc_type_arg_qualified) 86587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << typeArg << typeArg.getQualifiers().getAsString() 86687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << FixItHint::CreateRemoval(rangeToRemove); 86787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 86887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 86987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 87087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Remove qualifiers even if they're non-local. 87187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar typeArg = typeArg.getUnqualifiedType(); 87287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 87387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar finalTypeArgs.push_back(typeArg); 87487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 87587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (typeArg->getAs<PackExpansionType>()) 87687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar anyPackExpansions = true; 87787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 87887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Find the corresponding type parameter, if there is one. 87987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCTypeParamDecl *typeParam = nullptr; 88087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!anyPackExpansions) { 88187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (i < numTypeParams) { 88287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar typeParam = typeParams->begin()[i]; 88387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } else { 88487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Too many arguments. 88587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(loc, diag::err_objc_type_args_wrong_arity) 88687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << false 88787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << objcClass->getDeclName() 88887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << (unsigned)typeArgs.size() 88987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << numTypeParams; 89087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(objcClass->getLocation(), diag::note_previous_decl) 89187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << objcClass; 89287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 89387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (failOnError) 89487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return QualType(); 89587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 89687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return type; 89787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 89887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 89987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 90087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Objective-C object pointer types must be substitutable for the bounds. 90187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (const auto *typeArgObjC = typeArg->getAs<ObjCObjectPointerType>()) { 90287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If we don't have a type parameter to match against, assume 90387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // everything is fine. There was a prior pack expansion that 90487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // means we won't be able to match anything. 90587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!typeParam) { 90687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar assert(anyPackExpansions && "Too many arguments?"); 90787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 90887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 90987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 91087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Retrieve the bound. 91187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar QualType bound = typeParam->getUnderlyingType(); 91287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar const auto *boundObjC = bound->getAs<ObjCObjectPointerType>(); 91387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 91487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Determine whether the type argument is substitutable for the bound. 91587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (typeArgObjC->isObjCIdType()) { 91687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // When the type argument is 'id', the only acceptable type 91787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // parameter bound is 'id'. 91887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (boundObjC->isObjCIdType()) 91987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 92087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } else if (S.Context.canAssignObjCInterfaces(boundObjC, typeArgObjC)) { 92187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Otherwise, we follow the assignability rules. 92287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 92387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 92487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 92587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Diagnose the mismatch. 92687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(typeArgInfo->getTypeLoc().getLocStart(), 92787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar diag::err_objc_type_arg_does_not_match_bound) 92887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << typeArg << bound << typeParam->getDeclName(); 92987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(typeParam->getLocation(), diag::note_objc_type_param_here) 93087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << typeParam->getDeclName(); 93187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 93287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (failOnError) 93387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return QualType(); 93487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 93587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return type; 93687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 93787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 93887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Block pointer types are permitted for unqualified 'id' bounds. 93987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (typeArg->isBlockPointerType()) { 94087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If we don't have a type parameter to match against, assume 94187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // everything is fine. There was a prior pack expansion that 94287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // means we won't be able to match anything. 94387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!typeParam) { 94487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar assert(anyPackExpansions && "Too many arguments?"); 94587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 94687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 94787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 94887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Retrieve the bound. 94987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar QualType bound = typeParam->getUnderlyingType(); 95087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (bound->isBlockCompatibleObjCPointerType(S.Context)) 95187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 95287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 95387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Diagnose the mismatch. 95487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(typeArgInfo->getTypeLoc().getLocStart(), 95587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar diag::err_objc_type_arg_does_not_match_bound) 95687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << typeArg << bound << typeParam->getDeclName(); 95787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(typeParam->getLocation(), diag::note_objc_type_param_here) 95887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << typeParam->getDeclName(); 95987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 96087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (failOnError) 96187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return QualType(); 96287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 96387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return type; 96487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 96587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 96687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Dependent types will be checked at instantiation time. 96787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (typeArg->isDependentType()) { 96887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 96987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 97087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 97187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Diagnose non-id-compatible type arguments. 97287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(typeArgInfo->getTypeLoc().getLocStart(), 97387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar diag::err_objc_type_arg_not_id_compatible) 97487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << typeArg 97587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << typeArgInfo->getTypeLoc().getSourceRange(); 97687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 97787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (failOnError) 97887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return QualType(); 97987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 98087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return type; 98187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 98287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 98387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Make sure we didn't have the wrong number of arguments. 98487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!anyPackExpansions && finalTypeArgs.size() != numTypeParams) { 98587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(loc, diag::err_objc_type_args_wrong_arity) 98687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << (typeArgs.size() < typeParams->size()) 98787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << objcClass->getDeclName() 98887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << (unsigned)finalTypeArgs.size() 98987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << (unsigned)numTypeParams; 99087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(objcClass->getLocation(), diag::note_previous_decl) 99187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << objcClass; 99287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 99387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (failOnError) 99487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return QualType(); 99587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 99687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return type; 99787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 99887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 99987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Success. Form the specialized type. 100087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return S.Context.getObjCObjectType(type, finalTypeArgs, { }, false); 100187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 100287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 100387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// Apply Objective-C protocol qualifiers to the given type. 100487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarstatic QualType applyObjCProtocolQualifiers( 100587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Sema &S, SourceLocation loc, SourceRange range, QualType type, 100687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ArrayRef<ObjCProtocolDecl *> protocols, 100787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar const SourceLocation *protocolLocs, 100887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool failOnError = false) { 100987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ASTContext &ctx = S.Context; 101087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (const ObjCObjectType *objT = dyn_cast<ObjCObjectType>(type.getTypePtr())){ 101187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // FIXME: Check for protocols to which the class type is already 101287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // known to conform. 101387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 101487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return ctx.getObjCObjectType(objT->getBaseType(), 101587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar objT->getTypeArgsAsWritten(), 101687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar protocols, 101787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar objT->isKindOfTypeAsWritten()); 101887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 101987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 102087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (type->isObjCObjectType()) { 102187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Silently overwrite any existing protocol qualifiers. 102287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // TODO: determine whether that's the right thing to do. 102387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 102487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // FIXME: Check for protocols to which the class type is already 102587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // known to conform. 102687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return ctx.getObjCObjectType(type, { }, protocols, false); 102787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 102887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 102987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // id<protocol-list> 103087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (type->isObjCIdType()) { 103187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar const ObjCObjectPointerType *objPtr = type->castAs<ObjCObjectPointerType>(); 103287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type = ctx.getObjCObjectType(ctx.ObjCBuiltinIdTy, { }, protocols, 103387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar objPtr->isKindOfType()); 103487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return ctx.getObjCObjectPointerType(type); 103587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 103687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 103787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Class<protocol-list> 103887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (type->isObjCClassType()) { 103987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar const ObjCObjectPointerType *objPtr = type->castAs<ObjCObjectPointerType>(); 104087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type = ctx.getObjCObjectType(ctx.ObjCBuiltinClassTy, { }, protocols, 104187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar objPtr->isKindOfType()); 104287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return ctx.getObjCObjectPointerType(type); 104387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 104487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 104587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(loc, diag::err_invalid_protocol_qualifiers) 104687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << range; 104787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 104887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (failOnError) 104987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return QualType(); 105087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 105187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return type; 105287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 105387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 105487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga NainarQualType Sema::BuildObjCObjectType(QualType BaseType, 105587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation Loc, 105687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation TypeArgsLAngleLoc, 105787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ArrayRef<TypeSourceInfo *> TypeArgs, 105887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation TypeArgsRAngleLoc, 105987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation ProtocolLAngleLoc, 106087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ArrayRef<ObjCProtocolDecl *> Protocols, 106187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ArrayRef<SourceLocation> ProtocolLocs, 106287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation ProtocolRAngleLoc, 106387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool FailOnError) { 106487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar QualType Result = BaseType; 106587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!TypeArgs.empty()) { 106687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Result = applyObjCTypeArgs(*this, Loc, Result, TypeArgs, 106787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceRange(TypeArgsLAngleLoc, 106887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TypeArgsRAngleLoc), 106987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar FailOnError); 107087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (FailOnError && Result.isNull()) 107187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return QualType(); 107287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 107387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 107487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!Protocols.empty()) { 107587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Result = applyObjCProtocolQualifiers(*this, Loc, 107687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceRange(ProtocolLAngleLoc, 107787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ProtocolRAngleLoc), 107887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Result, Protocols, 107987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ProtocolLocs.data(), 108087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar FailOnError); 108187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (FailOnError && Result.isNull()) 108287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return QualType(); 108387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 108487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 108587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return Result; 108687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 108787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 108887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga NainarTypeResult Sema::actOnObjCProtocolQualifierType( 108987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation lAngleLoc, 109087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ArrayRef<Decl *> protocols, 109187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ArrayRef<SourceLocation> protocolLocs, 109287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation rAngleLoc) { 109387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Form id<protocol-list>. 109487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar QualType Result = Context.getObjCObjectType( 109587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Context.ObjCBuiltinIdTy, { }, 109687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar llvm::makeArrayRef( 109787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar (ObjCProtocolDecl * const *)protocols.data(), 109887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar protocols.size()), 109987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar false); 110087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Result = Context.getObjCObjectPointerType(Result); 110187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 110287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TypeSourceInfo *ResultTInfo = Context.CreateTypeSourceInfo(Result); 110387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TypeLoc ResultTL = ResultTInfo->getTypeLoc(); 110487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 110587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar auto ObjCObjectPointerTL = ResultTL.castAs<ObjCObjectPointerTypeLoc>(); 110687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectPointerTL.setStarLoc(SourceLocation()); // implicit 110787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 110887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar auto ObjCObjectTL = ObjCObjectPointerTL.getPointeeLoc() 110987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar .castAs<ObjCObjectTypeLoc>(); 111087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setHasBaseTypeAsWritten(false); 111187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.getBaseLoc().initialize(Context, SourceLocation()); 111287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 111387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // No type arguments. 111487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setTypeArgsLAngleLoc(SourceLocation()); 111587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setTypeArgsRAngleLoc(SourceLocation()); 111687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 111787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Fill in protocol qualifiers. 111887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setProtocolLAngleLoc(lAngleLoc); 111987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setProtocolRAngleLoc(rAngleLoc); 112087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar for (unsigned i = 0, n = protocols.size(); i != n; ++i) 112187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setProtocolLoc(i, protocolLocs[i]); 112287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 112387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // We're done. Return the completed type to the parser. 112487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return CreateParsedType(Result, ResultTInfo); 112587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 112687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 112787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga NainarTypeResult Sema::actOnObjCTypeArgsAndProtocolQualifiers( 112887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Scope *S, 112987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation Loc, 113087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ParsedType BaseType, 113187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation TypeArgsLAngleLoc, 113287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ArrayRef<ParsedType> TypeArgs, 113387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation TypeArgsRAngleLoc, 113487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation ProtocolLAngleLoc, 113587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ArrayRef<Decl *> Protocols, 113687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ArrayRef<SourceLocation> ProtocolLocs, 113787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation ProtocolRAngleLoc) { 113887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TypeSourceInfo *BaseTypeInfo = nullptr; 113987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar QualType T = GetTypeFromParser(BaseType, &BaseTypeInfo); 114087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (T.isNull()) 114187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return true; 114287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 114387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Handle missing type-source info. 114487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!BaseTypeInfo) 114587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar BaseTypeInfo = Context.getTrivialTypeSourceInfo(T, Loc); 114687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 114787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Extract type arguments. 114887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SmallVector<TypeSourceInfo *, 4> ActualTypeArgInfos; 114987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar for (unsigned i = 0, n = TypeArgs.size(); i != n; ++i) { 115087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TypeSourceInfo *TypeArgInfo = nullptr; 115187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar QualType TypeArg = GetTypeFromParser(TypeArgs[i], &TypeArgInfo); 115287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (TypeArg.isNull()) { 115387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ActualTypeArgInfos.clear(); 115487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 115587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 115687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 115787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar assert(TypeArgInfo && "No type source info?"); 115887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ActualTypeArgInfos.push_back(TypeArgInfo); 115987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 116087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 116187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Build the object type. 116287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar QualType Result = BuildObjCObjectType( 116387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar T, BaseTypeInfo->getTypeLoc().getSourceRange().getBegin(), 116487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TypeArgsLAngleLoc, ActualTypeArgInfos, TypeArgsRAngleLoc, 116587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ProtocolLAngleLoc, 116687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar llvm::makeArrayRef((ObjCProtocolDecl * const *)Protocols.data(), 116787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Protocols.size()), 116887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ProtocolLocs, ProtocolRAngleLoc, 116987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /*FailOnError=*/false); 117087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 117187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (Result == T) 117287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return BaseType; 117387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 117487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Create source information for this type. 117587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TypeSourceInfo *ResultTInfo = Context.CreateTypeSourceInfo(Result); 117687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TypeLoc ResultTL = ResultTInfo->getTypeLoc(); 117787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 117887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // For id<Proto1, Proto2> or Class<Proto1, Proto2>, we'll have an 117987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // object pointer type. Fill in source information for it. 118087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto ObjCObjectPointerTL = ResultTL.getAs<ObjCObjectPointerTypeLoc>()) { 118187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // The '*' is implicit. 118287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectPointerTL.setStarLoc(SourceLocation()); 118387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ResultTL = ObjCObjectPointerTL.getPointeeLoc(); 118487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 118587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 118687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar auto ObjCObjectTL = ResultTL.castAs<ObjCObjectTypeLoc>(); 118787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 118887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Type argument information. 118987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (ObjCObjectTL.getNumTypeArgs() > 0) { 119087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar assert(ObjCObjectTL.getNumTypeArgs() == ActualTypeArgInfos.size()); 119187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setTypeArgsLAngleLoc(TypeArgsLAngleLoc); 119287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setTypeArgsRAngleLoc(TypeArgsRAngleLoc); 119387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar for (unsigned i = 0, n = ActualTypeArgInfos.size(); i != n; ++i) 119487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setTypeArgTInfo(i, ActualTypeArgInfos[i]); 119587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } else { 119687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setTypeArgsLAngleLoc(SourceLocation()); 119787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setTypeArgsRAngleLoc(SourceLocation()); 119887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 119987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 120087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Protocol qualifier information. 120187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (ObjCObjectTL.getNumProtocols() > 0) { 120287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar assert(ObjCObjectTL.getNumProtocols() == Protocols.size()); 120387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setProtocolLAngleLoc(ProtocolLAngleLoc); 120487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setProtocolRAngleLoc(ProtocolRAngleLoc); 120587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar for (unsigned i = 0, n = Protocols.size(); i != n; ++i) 120687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setProtocolLoc(i, ProtocolLocs[i]); 120787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } else { 120887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setProtocolLAngleLoc(SourceLocation()); 120987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setProtocolRAngleLoc(SourceLocation()); 121087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 121187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 121287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Base type. 121387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.setHasBaseTypeAsWritten(true); 121487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (ObjCObjectTL.getType() == T) 121587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.getBaseLoc().initializeFullCopy(BaseTypeInfo->getTypeLoc()); 121687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar else 121787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ObjCObjectTL.getBaseLoc().initialize(Context, Loc); 121887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 121987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // We're done. Return the completed type to the parser. 122087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return CreateParsedType(Result, ResultTInfo); 122187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 122287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 12234967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainarstatic StringRef getImageAccessAttrStr(AttributeList *attrs) { 12244967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (attrs) { 12254967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 12264967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar AttributeList *Next; 12274967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar do { 12284967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar AttributeList &Attr = *attrs; 12294967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Next = Attr.getNext(); 12304967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (Attr.getKind() == AttributeList::AT_OpenCLAccess) { 12314967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return Attr.getName()->getName(); 12324967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 12334967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } while (Next); 12344967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 12354967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return ""; 12364967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar} 12374967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 1238930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor/// \brief Convert the specified declspec to the appropriate type 1239930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor/// object. 12401dfbd92c83699820bfaa352e83083124e34fc9dcJames Dennett/// \param state Specifies the declarator containing the declaration specifier 12411dfbd92c83699820bfaa352e83083124e34fc9dcJames Dennett/// to be converted, along with other associated processing state. 12425153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner/// \returns The type described by the declaration specifiers. This function 12435153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner/// never returns null. 12448cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidisstatic QualType ConvertDeclSpecToType(TypeProcessingState &state) { 12455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FIXME: Should move the logic from DeclSpec::Finish to here for validity 12465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // checking. 1247711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 12488cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Sema &S = state.getSema(); 1249711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 1250711c52bb20d0c69063b52a99826fb7d2835501f1John McCall const DeclSpec &DS = declarator.getDeclSpec(); 1251711c52bb20d0c69063b52a99826fb7d2835501f1John McCall SourceLocation DeclLoc = declarator.getIdentifierLoc(); 12525db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner if (DeclLoc.isInvalid()) 125396a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar DeclLoc = DS.getLocStart(); 125491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1255711c52bb20d0c69063b52a99826fb7d2835501f1John McCall ASTContext &Context = S.Context; 12561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 12575db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner QualType Result; 12585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DS.getTypeSpecType()) { 125996b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner case DeclSpec::TST_void: 126096b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner Result = Context.VoidTy; 126196b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner break; 12625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_char: 12635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.getTypeSpecSign() == DeclSpec::TSS_unspecified) 1264fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.CharTy; 12655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else if (DS.getTypeSpecSign() == DeclSpec::TSS_signed) 1266fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.SignedCharTy; 12675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else { 12685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(DS.getTypeSpecSign() == DeclSpec::TSS_unsigned && 12695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Unknown TSS value"); 1270fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.UnsignedCharTy; 12715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1272958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 127364c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis case DeclSpec::TST_wchar: 127464c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis if (DS.getTypeSpecSign() == DeclSpec::TSS_unspecified) 127564c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis Result = Context.WCharTy; 127664c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis else if (DS.getTypeSpecSign() == DeclSpec::TSS_signed) { 1277711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecSignLoc(), diag::ext_invalid_sign_spec) 1278651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines << DS.getSpecifierName(DS.getTypeSpecType(), 1279651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines Context.getPrintingPolicy()); 128064c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis Result = Context.getSignedWCharType(); 128164c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis } else { 128264c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis assert(DS.getTypeSpecSign() == DeclSpec::TSS_unsigned && 128364c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis "Unknown TSS value"); 1284711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecSignLoc(), diag::ext_invalid_sign_spec) 1285651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines << DS.getSpecifierName(DS.getTypeSpecType(), 1286651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines Context.getPrintingPolicy()); 128764c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis Result = Context.getUnsignedWCharType(); 128864c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis } 128964c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis break; 1290f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith case DeclSpec::TST_char16: 1291f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith assert(DS.getTypeSpecSign() == DeclSpec::TSS_unspecified && 1292f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith "Unknown TSS value"); 1293f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith Result = Context.Char16Ty; 1294f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith break; 1295f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith case DeclSpec::TST_char32: 1296f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith assert(DS.getTypeSpecSign() == DeclSpec::TSS_unspecified && 1297f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith "Unknown TSS value"); 1298f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith Result = Context.Char32Ty; 1299f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith break; 1300d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner case DeclSpec::TST_unspecified: 13015db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner // If this is a missing declspec in a block literal return context, then it 13025db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner // is inferred from the return statements inside the block. 1303f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman // The declspec is always missing in a lambda expr context; it is either 1304f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman // specified with a trailing return type or inferred. 1305176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines if (S.getLangOpts().CPlusPlus14 && 130641d0958281627882fbe2049fb887d741eabd3fe3Richard Smith declarator.getContext() == Declarator::LambdaExprContext) { 130741d0958281627882fbe2049fb887d741eabd3fe3Richard Smith // In C++1y, a lambda's implicit return type is 'auto'. 130841d0958281627882fbe2049fb887d741eabd3fe3Richard Smith Result = Context.getAutoDeductType(); 130941d0958281627882fbe2049fb887d741eabd3fe3Richard Smith break; 131041d0958281627882fbe2049fb887d741eabd3fe3Richard Smith } else if (declarator.getContext() == Declarator::LambdaExprContext || 13114967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar checkOmittedBlockReturnType(S, declarator, 13124967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Context.DependentTy)) { 1313152b4e4652baedfceba1cd8115515629225e713fManuel Klimek Result = Context.DependentTy; 13145db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner break; 13155db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner } 13161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1317d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // Unspecified typespec defaults to int in C90. However, the C90 grammar 1318d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // [C90 6.5] only allows a decl-spec if there was *some* type-specifier, 1319d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // type-qualifier, or storage-class-specifier. If not, emit an extwarn. 1320d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // Note that the one exception to this is function definitions, which are 1321d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // allowed to be completely missing a declspec. This is handled in the 1322d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // parser already though by it pretending to have seen an 'int' in this 1323d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // case. 13244e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().ImplicitInt) { 132535d276f443462249b436951c1c663820569e1768Chris Lattner // In C89 mode, we only warn if there is a completely missing declspec 132635d276f443462249b436951c1c663820569e1768Chris Lattner // when one is not allowed. 13273f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner if (DS.isEmpty()) { 1328711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DeclLoc, diag::ext_missing_declspec) 13293f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner << DS.getSourceRange() 133096a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar << FixItHint::CreateInsertion(DS.getLocStart(), "int"); 13313f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner } 13324310f4ee260e6c7ceeaf299e240f4d789ecc730dDouglas Gregor } else if (!DS.hasTypeSpecifier()) { 1333d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // C99 and C++ require a type specifier. For example, C99 6.7.2p2 says: 1334d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // "At least one type specifier shall be given in the declaration 1335d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // specifiers in each declaration, and in the specifier-qualifier list in 1336d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // each struct declaration and type name." 133758eb37036b47bbe7433f72d92a2cb60848507707Richard Smith if (S.getLangOpts().CPlusPlus) { 1338711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DeclLoc, diag::err_missing_type_specifier) 13393f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner << DS.getSourceRange(); 13401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1341b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner // When this occurs in C++ code, often something is very broken with the 1342b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner // value being declared, poison it as invalid so we don't get chains of 1343b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner // errors. 1344711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 13454967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } else if (S.getLangOpts().OpenCLVersion >= 200 && DS.isTypeSpecPipe()){ 13464967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(DeclLoc, diag::err_missing_actual_pipe_type) 13474967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar << DS.getSourceRange(); 13484967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar declarator.setInvalidType(true); 1349b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner } else { 1350711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DeclLoc, diag::ext_missing_type_specifier) 13513f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner << DS.getSourceRange(); 1352b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner } 1353d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner } 13541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // FALL THROUGH. 13563cbc38bd3569d37f53bd76fa89d24803f48f5036Chris Lattner case DeclSpec::TST_int: { 13575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.getTypeSpecSign() != DeclSpec::TSS_unsigned) { 13585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DS.getTypeSpecWidth()) { 1359fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_unspecified: Result = Context.IntTy; break; 1360fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_short: Result = Context.ShortTy; break; 1361fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_long: Result = Context.LongTy; break; 1362311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner case DeclSpec::TSW_longlong: 1363311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner Result = Context.LongLongTy; 136491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1365e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko // 'long long' is a C99 or C++11 feature. 1366e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko if (!S.getLangOpts().C99) { 1367e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko if (S.getLangOpts().CPlusPlus) 1368e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko S.Diag(DS.getTypeSpecWidthLoc(), 136980ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith S.getLangOpts().CPlusPlus11 ? 1370e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko diag::warn_cxx98_compat_longlong : diag::ext_cxx11_longlong); 1371e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko else 1372e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko S.Diag(DS.getTypeSpecWidthLoc(), diag::ext_c99_longlong); 1373e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko } 1374311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner break; 13755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 13765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 13775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DS.getTypeSpecWidth()) { 1378fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_unspecified: Result = Context.UnsignedIntTy; break; 1379fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_short: Result = Context.UnsignedShortTy; break; 1380fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_long: Result = Context.UnsignedLongTy; break; 1381311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner case DeclSpec::TSW_longlong: 1382311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner Result = Context.UnsignedLongLongTy; 138391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1384e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko // 'long long' is a C99 or C++11 feature. 1385e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko if (!S.getLangOpts().C99) { 1386e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko if (S.getLangOpts().CPlusPlus) 1387e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko S.Diag(DS.getTypeSpecWidthLoc(), 138880ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith S.getLangOpts().CPlusPlus11 ? 1389e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko diag::warn_cxx98_compat_longlong : diag::ext_cxx11_longlong); 1390e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko else 1391e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko S.Diag(DS.getTypeSpecWidthLoc(), diag::ext_c99_longlong); 1392e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko } 1393311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner break; 13945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 13955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1396958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 13973cbc38bd3569d37f53bd76fa89d24803f48f5036Chris Lattner } 13985a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith case DeclSpec::TST_int128: 13996bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (!S.Context.getTargetInfo().hasInt128Type()) 14004967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(DS.getTypeSpecTypeLoc(), diag::err_type_unsupported) 14014967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar << "__int128"; 14025a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith if (DS.getTypeSpecSign() == DeclSpec::TSS_unsigned) 14035a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith Result = Context.UnsignedInt128Ty; 14045a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith else 14055a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith Result = Context.Int128Ty; 14065a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith break; 1407aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov case DeclSpec::TST_half: Result = Context.HalfTy; break; 1408fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TST_float: Result = Context.FloatTy; break; 1409958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner case DeclSpec::TST_double: 1410958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner if (DS.getTypeSpecWidth() == DeclSpec::TSW_long) 1411fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.LongDoubleTy; 1412958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner else 1413fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.DoubleTy; 141439d3e7a26c1969fcb76bceb4ee0a410c60ea5954Peter Collingbourne 14150e2c34f92f00628d48968dfea096d36381f494cbStephen Hines if (S.getLangOpts().OpenCL && 14160e2c34f92f00628d48968dfea096d36381f494cbStephen Hines !((S.getLangOpts().OpenCLVersion >= 120) || 14170e2c34f92f00628d48968dfea096d36381f494cbStephen Hines S.getOpenCLOptions().cl_khr_fp64)) { 14183ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar S.Diag(DS.getTypeSpecTypeLoc(), diag::err_type_requires_extension) 14193ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar << Result << "cl_khr_fp64"; 142039d3e7a26c1969fcb76bceb4ee0a410c60ea5954Peter Collingbourne declarator.setInvalidType(true); 142139d3e7a26c1969fcb76bceb4ee0a410c60ea5954Peter Collingbourne } 1422958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 14234967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclSpec::TST_float128: 14244967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (!S.Context.getTargetInfo().hasFloat128Type()) 14254967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(DS.getTypeSpecTypeLoc(), diag::err_type_unsupported) 14264967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar << "__float128"; 14274967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Result = Context.Float128Ty; 14284967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar break; 1429fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TST_bool: Result = Context.BoolTy; break; // _Bool or bool 14304967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar break; 14315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_decimal32: // _Decimal32 14325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_decimal64: // _Decimal64 14335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_decimal128: // _Decimal128 1434711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecTypeLoc(), diag::err_decimal_unsupported); 14358f12f65fad7bfbbdbd4234efe0d484f68c3924b6Chris Lattner Result = Context.IntTy; 1436711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 14378f12f65fad7bfbbdbd4234efe0d484f68c3924b6Chris Lattner break; 143899dc91422144483c20d1c7381bc9ac634b646b04Chris Lattner case DeclSpec::TST_class: 14395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_enum: 14405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_union: 14416666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos case DeclSpec::TST_struct: 14426666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos case DeclSpec::TST_interface: { 1443b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall TypeDecl *D = dyn_cast_or_null<TypeDecl>(DS.getRepAsDecl()); 14446e24726524c2b51b31bb4b622aa678a46b024f42John McCall if (!D) { 14456e24726524c2b51b31bb4b622aa678a46b024f42John McCall // This can happen in C++ with ambiguous lookups. 14466e24726524c2b51b31bb4b622aa678a46b024f42John McCall Result = Context.IntTy; 1447711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 14486e24726524c2b51b31bb4b622aa678a46b024f42John McCall break; 14496e24726524c2b51b31bb4b622aa678a46b024f42John McCall } 14506e24726524c2b51b31bb4b622aa678a46b024f42John McCall 1451a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner // If the type is deprecated or unavailable, diagnose it. 14520daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara S.DiagnoseUseOfDecl(D, DS.getTypeSpecTypeNameLoc()); 145391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 14545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(DS.getTypeSpecWidth() == 0 && DS.getTypeSpecComplex() == 0 && 1455a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner DS.getTypeSpecSign() == 0 && "No qualifiers on tag names!"); 145691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 14575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TypeQuals handled by caller. 1458a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner Result = Context.getTypeDeclType(D); 14592191b20bfb31fc0e22a158f6b4204cd0b7dbd0fdJohn McCall 14600daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara // In both C and C++, make an ElaboratedType. 14610daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara ElaboratedTypeKeyword Keyword 14620daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara = ElaboratedType::getKeywordForTypeSpec(DS.getTypeSpecType()); 14630daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara Result = S.getElaboratedType(Keyword, DS.getTypeSpecScope(), Result); 1464958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 14651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 14661a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor case DeclSpec::TST_typename: { 14675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(DS.getTypeSpecWidth() == 0 && DS.getTypeSpecComplex() == 0 && 14685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.getTypeSpecSign() == 0 && 14695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Can't handle qualifiers on typedef names yet!"); 1470711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Result = S.GetTypeFromParser(DS.getRepAsType()); 147187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (Result.isNull()) { 1472711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 14733ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar } else if (S.getLangOpts().OpenCL) { 147487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (Result->getAs<AtomicType>()) { 147587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar StringRef TypeName = Result.getBaseTypeIdentifier()->getName(); 147687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool NoExtTypes = 147787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar llvm::StringSwitch<bool>(TypeName) 147887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar .Cases("atomic_int", "atomic_uint", "atomic_float", 147987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar "atomic_flag", true) 148087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar .Default(false); 14813ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar if (!S.getOpenCLOptions().cl_khr_int64_base_atomics && !NoExtTypes) { 14823ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar S.Diag(DS.getTypeSpecTypeLoc(), diag::err_type_requires_extension) 14833ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar << Result << "cl_khr_int64_base_atomics"; 14843ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar declarator.setInvalidType(true); 14853ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar } 14863ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar if (!S.getOpenCLOptions().cl_khr_int64_extended_atomics && 14873ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar !NoExtTypes) { 14883ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar S.Diag(DS.getTypeSpecTypeLoc(), diag::err_type_requires_extension) 14893ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar << Result << "cl_khr_int64_extended_atomics"; 14903ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar declarator.setInvalidType(true); 14913ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar } 149287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!S.getOpenCLOptions().cl_khr_fp64 && 149387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar !TypeName.compare("atomic_double")) { 14943ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar S.Diag(DS.getTypeSpecTypeLoc(), diag::err_type_requires_extension) 14953ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar << Result << "cl_khr_fp64"; 14963ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar declarator.setInvalidType(true); 14973ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar } 149887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } else if (!S.getOpenCLOptions().cl_khr_gl_msaa_sharing && 14994967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar (Result->isOCLImage2dArrayMSAADepthROType() || 15004967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Result->isOCLImage2dArrayMSAADepthWOType() || 15014967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Result->isOCLImage2dArrayMSAADepthRWType() || 15024967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Result->isOCLImage2dArrayMSAAROType() || 15034967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Result->isOCLImage2dArrayMSAARWType() || 15044967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Result->isOCLImage2dArrayMSAAWOType() || 15054967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Result->isOCLImage2dMSAADepthROType() || 15064967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Result->isOCLImage2dMSAADepthRWType() || 15074967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Result->isOCLImage2dMSAADepthWOType() || 15084967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Result->isOCLImage2dMSAAROType() || 15094967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Result->isOCLImage2dMSAARWType() || 15104967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Result->isOCLImage2dMSAAWOType())) { 151187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(DS.getTypeSpecTypeLoc(), diag::err_type_requires_extension) 151287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << Result << "cl_khr_gl_msaa_sharing"; 151387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar declarator.setInvalidType(true); 15143ea9e33ea25e0c2b12db56418ba3f994eb662c04Pirama Arumuga Nainar } 1515c569249ca0ab755ac79d8cbbfcb2bcae19743624Fariborz Jahanian } 15161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TypeQuals handled by caller. 1518958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 15195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 1520958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner case DeclSpec::TST_typeofType: 1521e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis // FIXME: Preserve type source info. 1522711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Result = S.GetTypeFromParser(DS.getRepAsType()); 1523958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner assert(!Result.isNull() && "Didn't get a type for typeof?"); 1524730e175910936eae49e65caea8b2ba81c67edff7Fariborz Jahanian if (!Result->isDependentType()) 1525730e175910936eae49e65caea8b2ba81c67edff7Fariborz Jahanian if (const TagType *TT = Result->getAs<TagType>()) 1526711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.DiagnoseUseOfDecl(TT->getDecl(), DS.getTypeSpecTypeLoc()); 1527d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff // TypeQuals handled by caller. 1528fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.getTypeOfType(Result); 1529958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 1530d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff case DeclSpec::TST_typeofExpr: { 1531b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Expr *E = DS.getRepAsExpr(); 1532d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff assert(E && "Didn't get an expression for typeof?"); 1533d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff // TypeQuals handled by caller. 1534711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Result = S.BuildTypeofExprType(E, DS.getTypeSpecTypeLoc()); 15354b52e25f3b05ab0f9d2492276a52323a50a84fb7Douglas Gregor if (Result.isNull()) { 15364b52e25f3b05ab0f9d2492276a52323a50a84fb7Douglas Gregor Result = Context.IntTy; 1537711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 15384b52e25f3b05ab0f9d2492276a52323a50a84fb7Douglas Gregor } 1539958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 1540d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff } 15416fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson case DeclSpec::TST_decltype: { 1542b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Expr *E = DS.getRepAsExpr(); 15436fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson assert(E && "Didn't get an expression for decltype?"); 15446fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson // TypeQuals handled by caller. 1545711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Result = S.BuildDecltypeType(E, DS.getTypeSpecTypeLoc()); 1546af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson if (Result.isNull()) { 1547af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson Result = Context.IntTy; 1548711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 1549af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson } 15506fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson break; 15516fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson } 1552ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt case DeclSpec::TST_underlyingType: 1553db5d44b775c60166074acd184ca9f1981c10c2a7Sean Hunt Result = S.GetTypeFromParser(DS.getRepAsType()); 1554db5d44b775c60166074acd184ca9f1981c10c2a7Sean Hunt assert(!Result.isNull() && "Didn't get a type for __underlying_type?"); 1555ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Result = S.BuildUnaryTransformType(Result, 1556ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt UnaryTransformType::EnumUnderlyingType, 1557ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt DS.getTypeSpecTypeLoc()); 1558ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt if (Result.isNull()) { 1559ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Result = Context.IntTy; 1560ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt declarator.setInvalidType(true); 1561db5d44b775c60166074acd184ca9f1981c10c2a7Sean Hunt } 156291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier break; 1563db5d44b775c60166074acd184ca9f1981c10c2a7Sean Hunt 1564a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith case DeclSpec::TST_auto: 1565e89d15944dd3be750a09805ad21222d2fa9321faAnders Carlsson // TypeQuals handled by caller. 1566fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // If auto is mentioned in a lambda parameter context, convert it to a 1567fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // template parameter type immediately, with the appropriate depth and 1568fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // index, and update sema's state (LambdaScopeInfo) for the current lambda 1569fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // being analyzed (which tracks the invented type template parameter). 1570fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali if (declarator.getContext() == Declarator::LambdaExprParameterContext) { 1571fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali sema::LambdaScopeInfo *LSI = S.getCurLambda(); 1572fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali assert(LSI && "No LambdaScopeInfo on the stack!"); 1573fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali const unsigned TemplateParameterDepth = LSI->AutoTemplateParameterDepth; 1574fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali const unsigned AutoParameterPosition = LSI->AutoTemplateParams.size(); 1575fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali const bool IsParameterPack = declarator.hasEllipsis(); 15760e2c34f92f00628d48968dfea096d36381f494cbStephen Hines 1577fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // Turns out we must create the TemplateTypeParmDecl here to 1578fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // retrieve the corresponding template parameter type. 1579fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali TemplateTypeParmDecl *CorrespondingTemplateParam = 1580fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali TemplateTypeParmDecl::Create(Context, 1581fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // Temporarily add to the TranslationUnit DeclContext. When the 1582fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // associated TemplateParameterList is attached to a template 1583fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // declaration (such as FunctionTemplateDecl), the DeclContext 1584fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // for each template parameter gets updated appropriately via 1585fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // a call to AdoptTemplateParameterList. 1586fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali Context.getTranslationUnitDecl(), 1587fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali /*KeyLoc*/ SourceLocation(), 1588fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali /*NameLoc*/ declarator.getLocStart(), 1589fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali TemplateParameterDepth, 1590fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali AutoParameterPosition, // our template param index 15910e2c34f92f00628d48968dfea096d36381f494cbStephen Hines /* Identifier*/ nullptr, false, IsParameterPack); 1592fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali LSI->AutoTemplateParams.push_back(CorrespondingTemplateParam); 1593fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // Replace the 'auto' in the function parameter with this invented 1594fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // template type parameter. 1595176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines Result = QualType(CorrespondingTemplateParam->getTypeForDecl(), 0); 1596fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali } else { 159787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Result = Context.getAutoType(QualType(), AutoTypeKeyword::Auto, false); 1598fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali } 1599a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith break; 1600a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith 160187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclSpec::TST_auto_type: 160287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Result = Context.getAutoType(QualType(), AutoTypeKeyword::GNUAutoType, false); 160387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 160487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 1605a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith case DeclSpec::TST_decltype_auto: 160687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Result = Context.getAutoType(QualType(), AutoTypeKeyword::DecltypeAuto, 160787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /*IsDependent*/ false); 1608e89d15944dd3be750a09805ad21222d2fa9321faAnders Carlsson break; 16091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1610a5fc472b353b88be3b4981da946fb01f5a5cc0c6John McCall case DeclSpec::TST_unknown_anytype: 1611a5fc472b353b88be3b4981da946fb01f5a5cc0c6John McCall Result = Context.UnknownAnyTy; 1612a5fc472b353b88be3b4981da946fb01f5a5cc0c6John McCall break; 1613a5fc472b353b88be3b4981da946fb01f5a5cc0c6John McCall 1614b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman case DeclSpec::TST_atomic: 1615b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman Result = S.GetTypeFromParser(DS.getRepAsType()); 1616b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman assert(!Result.isNull() && "Didn't get a type for _Atomic?"); 1617b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman Result = S.BuildAtomicType(Result, DS.getTypeSpecTypeLoc()); 1618b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman if (Result.isNull()) { 1619b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman Result = Context.IntTy; 1620b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman declarator.setInvalidType(true); 1621b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman } 162291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier break; 1623b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei 16244967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar#define GENERIC_IMAGE_TYPE(ImgType, Id) \ 16254967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclSpec::TST_##ImgType##_t: \ 16264967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Result = llvm::StringSwitch<QualType>( \ 16274967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar getImageAccessAttrStr(DS.getAttributes().getList())) \ 16284967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar .Cases("write_only", "__write_only", Context.Id##WOTy) \ 16294967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar .Cases("read_write", "__read_write", Context.Id##RWTy) \ 16304967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar .Default(Context.Id##ROTy); \ 16314967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar break; 16324967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar#include "clang/Basic/OpenCLImageTypes.def" 16334967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 1634809070a886684cb5b92eb0e00a6581ab1fa6b17aDouglas Gregor case DeclSpec::TST_error: 16355153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner Result = Context.IntTy; 1636711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 16375153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner break; 16385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 16391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1640958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner // Handle complex types. 1641f244cd7e54753caf6edb76df430dea2f43bb82a8Douglas Gregor if (DS.getTypeSpecComplex() == DeclSpec::TSC_complex) { 16424e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().Freestanding) 1643711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecComplexLoc(), diag::ext_freestanding_complex); 1644fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.getComplexType(Result); 164582287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson } else if (DS.isTypeAltiVecVector()) { 164682287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson unsigned typeSize = static_cast<unsigned>(Context.getTypeSize(Result)); 164782287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson assert(typeSize > 0 && "type size for vector must be greater than 0 bits"); 1648e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson VectorType::VectorKind VecKind = VectorType::AltiVecVector; 1649788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner if (DS.isTypeAltiVecPixel()) 1650e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson VecKind = VectorType::AltiVecPixel; 1651788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner else if (DS.isTypeAltiVecBool()) 1652e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson VecKind = VectorType::AltiVecBool; 1653e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson Result = Context.getVectorType(Result, 128/typeSize, VecKind); 1654f244cd7e54753caf6edb76df430dea2f43bb82a8Douglas Gregor } 16551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 165647423bdaa06a3b9c2a859b57c17fc570094dad1cArgyrios Kyrtzidis // FIXME: Imaginary. 165747423bdaa06a3b9c2a859b57c17fc570094dad1cArgyrios Kyrtzidis if (DS.getTypeSpecComplex() == DeclSpec::TSC_imaginary) 1658711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecComplexLoc(), diag::err_imaginary_not_supported); 16591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1660711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Before we process any type attributes, synthesize a block literal 1661711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // function declarator if necessary. 1662711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (declarator.getContext() == Declarator::BlockLiteralContext) 1663711c52bb20d0c69063b52a99826fb7d2835501f1John McCall maybeSynthesizeBlockSignature(state, Result); 1664711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 1665711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Apply any type attributes from the decl spec. This may cause the 1666711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // list of type attributes to be temporarily saved while the type 1667711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // attributes are pushed around. 16684967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // pipe attributes will be handled later ( at GetFullTypeForDeclarator ) 16694967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (!DS.isTypeSpecPipe()) 16704967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar processTypeAttrs(state, Result, TAL_DeclSpec, DS.getAttributes().getList()); 16711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 167296b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // Apply const/volatile/restrict qualifiers to T. 167396b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner if (unsigned TypeQuals = DS.getTypeQualifiers()) { 1674b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // Warn about CV qualifiers on function types. 1675b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // C99 6.7.3p8: 1676b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // If the specification of a function type includes any type qualifiers, 1677b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // the behavior is undefined. 1678b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // C++11 [dcl.fct]p7: 1679b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // The effect of a cv-qualifier-seq in a function declarator is not the 1680b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // same as adding cv-qualification on top of the function type. In the 1681b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // latter case, the cv-qualifiers are ignored. 1682b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar if (TypeQuals && Result->isFunctionType()) { 1683b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar diagnoseAndRemoveTypeQualifiers( 1684b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar S, DS, TypeQuals, Result, DeclSpec::TQ_const | DeclSpec::TQ_volatile, 1685b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar S.getLangOpts().CPlusPlus 1686b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar ? diag::warn_typecheck_function_qualifiers_ignored 1687b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar : diag::warn_typecheck_function_qualifiers_unspecified); 1688b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // No diagnostic for 'restrict' or '_Atomic' applied to a 1689b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // function type; we'll diagnose those later, in BuildQualifiedType. 169096b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 16911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1692651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // C++11 [dcl.ref]p1: 1693f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // Cv-qualified references are ill-formed except when the 1694651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // cv-qualifiers are introduced through the use of a typedef-name 1695651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // or decltype-specifier, in which case the cv-qualifiers are ignored. 1696651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // 1697651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // There don't appear to be any other contexts in which a cv-qualified 1698651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // reference type could be formed, so the 'ill-formed' clause here appears 1699651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // to never happen. 1700b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar if (TypeQuals && Result->isReferenceType()) { 1701b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar diagnoseAndRemoveTypeQualifiers( 1702b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar S, DS, TypeQuals, Result, 1703b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar DeclSpec::TQ_const | DeclSpec::TQ_volatile | DeclSpec::TQ_atomic, 1704b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar diag::warn_typecheck_reference_qualifiers); 17051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 17061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1707bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman // C90 6.5.3 constraints: "The same type qualifier shall not appear more 1708bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman // than once in the same specifier-list or qualifier-list, either directly 1709bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman // or via one or more typedefs." 171091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier if (!S.getLangOpts().C99 && !S.getLangOpts().CPlusPlus 1711bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman && TypeQuals & Result.getCVRQualifiers()) { 1712bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman if (TypeQuals & DeclSpec::TQ_const && Result.isConstQualified()) { 171391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier S.Diag(DS.getConstSpecLoc(), diag::ext_duplicate_declspec) 1714bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman << "const"; 1715bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman } 1716bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman 1717bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman if (TypeQuals & DeclSpec::TQ_volatile && Result.isVolatileQualified()) { 171891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier S.Diag(DS.getVolatileSpecLoc(), diag::ext_duplicate_declspec) 1719bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman << "volatile"; 1720bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman } 1721bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman 17224cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // C90 doesn't have restrict nor _Atomic, so it doesn't force us to 17234cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // produce a warning in this case. 1724bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman } 1725bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman 17264cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith QualType Qualified = S.BuildQualifiedType(Result, DeclLoc, TypeQuals, &DS); 17274cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 17284cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // If adding qualifiers fails, just use the unqualified type. 17294cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith if (Qualified.isNull()) 17304cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith declarator.setInvalidType(true); 17314cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith else 17324cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith Result = Qualified; 173396b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 17340953e767ff7817f97b3ab20896b229891eeff45bJohn McCall 17350e2c34f92f00628d48968dfea096d36381f494cbStephen Hines assert(!Result.isNull() && "This function should not return a null type"); 1736f1d705c3e2276f7f5b97b8b3394b9b3068fdf25bChris Lattner return Result; 1737f1d705c3e2276f7f5b97b8b3394b9b3068fdf25bChris Lattner} 1738f1d705c3e2276f7f5b97b8b3394b9b3068fdf25bChris Lattner 1739cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregorstatic std::string getPrintableNameForEntity(DeclarationName Entity) { 1740cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (Entity) 1741cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return Entity.getAsString(); 17421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1743cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return "type name"; 1744cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 1745cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 17462865474261a608c7873b87ba4af110d17907896dJohn McCallQualType Sema::BuildQualifiedType(QualType T, SourceLocation Loc, 174793d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith Qualifiers Qs, const DeclSpec *DS) { 17480e2c34f92f00628d48968dfea096d36381f494cbStephen Hines if (T.isNull()) 17490e2c34f92f00628d48968dfea096d36381f494cbStephen Hines return QualType(); 17500e2c34f92f00628d48968dfea096d36381f494cbStephen Hines 17512865474261a608c7873b87ba4af110d17907896dJohn McCall // Enforce C99 6.7.3p2: "Types other than pointer types derived from 17522865474261a608c7873b87ba4af110d17907896dJohn McCall // object or incomplete types shall not be restrict-qualified." 17532865474261a608c7873b87ba4af110d17907896dJohn McCall if (Qs.hasRestrict()) { 17542865474261a608c7873b87ba4af110d17907896dJohn McCall unsigned DiagID = 0; 17552865474261a608c7873b87ba4af110d17907896dJohn McCall QualType ProblemTy; 17562865474261a608c7873b87ba4af110d17907896dJohn McCall 175793d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith if (T->isAnyPointerType() || T->isReferenceType() || 175893d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith T->isMemberPointerType()) { 175993d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith QualType EltTy; 176093d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith if (T->isObjCObjectPointerType()) 176193d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith EltTy = T; 176293d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith else if (const MemberPointerType *PTy = T->getAs<MemberPointerType>()) 176393d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith EltTy = PTy->getPointeeType(); 176493d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith else 176593d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith EltTy = T->getPointeeType(); 176693d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith 176793d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith // If we have a pointer or reference, the pointee must have an object 176893d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith // incomplete type. 176993d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith if (!EltTy->isIncompleteOrObjectType()) { 17702865474261a608c7873b87ba4af110d17907896dJohn McCall DiagID = diag::err_typecheck_invalid_restrict_invalid_pointee; 177193d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith ProblemTy = EltTy; 177291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier } 177393d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith } else if (!T->isDependentType()) { 177493d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith DiagID = diag::err_typecheck_invalid_restrict_not_pointer; 17752865474261a608c7873b87ba4af110d17907896dJohn McCall ProblemTy = T; 17762865474261a608c7873b87ba4af110d17907896dJohn McCall } 17772865474261a608c7873b87ba4af110d17907896dJohn McCall 17782865474261a608c7873b87ba4af110d17907896dJohn McCall if (DiagID) { 177993d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith Diag(DS ? DS->getRestrictSpecLoc() : Loc, DiagID) << ProblemTy; 17802865474261a608c7873b87ba4af110d17907896dJohn McCall Qs.removeRestrict(); 17812865474261a608c7873b87ba4af110d17907896dJohn McCall } 17822865474261a608c7873b87ba4af110d17907896dJohn McCall } 17832865474261a608c7873b87ba4af110d17907896dJohn McCall 17842865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getQualifiedType(T, Qs); 17852865474261a608c7873b87ba4af110d17907896dJohn McCall} 17862865474261a608c7873b87ba4af110d17907896dJohn McCall 17874cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard SmithQualType Sema::BuildQualifiedType(QualType T, SourceLocation Loc, 17884967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar unsigned CVRAU, const DeclSpec *DS) { 17890e2c34f92f00628d48968dfea096d36381f494cbStephen Hines if (T.isNull()) 17900e2c34f92f00628d48968dfea096d36381f494cbStephen Hines return QualType(); 17910e2c34f92f00628d48968dfea096d36381f494cbStephen Hines 17924967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Convert from DeclSpec::TQ to Qualifiers::TQ by just dropping TQ_atomic and 17934967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // TQ_unaligned; 17944967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar unsigned CVR = CVRAU & ~(DeclSpec::TQ_atomic | DeclSpec::TQ_unaligned); 17954cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 17964cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // C11 6.7.3/5: 17974cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // If the same qualifier appears more than once in the same 17984cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // specifier-qualifier-list, either directly or via one or more typedefs, 17994cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // the behavior is the same as if it appeared only once. 18004cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // 18014cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // It's not specified what happens when the _Atomic qualifier is applied to 18024cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // a type specified with the _Atomic specifier, but we assume that this 18034cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // should be treated as if the _Atomic qualifier appeared multiple times. 18044967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (CVRAU & DeclSpec::TQ_atomic && !T->isAtomicType()) { 18054cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // C11 6.7.3/5: 18064cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // If other qualifiers appear along with the _Atomic qualifier in a 18074cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // specifier-qualifier-list, the resulting type is the so-qualified 18084cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // atomic type. 18094cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // 18104cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // Don't need to worry about array types here, since _Atomic can't be 18114cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // applied to such types. 18124cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith SplitQualType Split = T.getSplitUnqualifiedType(); 18134cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith T = BuildAtomicType(QualType(Split.Ty, 0), 18144cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith DS ? DS->getAtomicSpecLoc() : Loc); 18154cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith if (T.isNull()) 18164cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith return T; 18174cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith Split.Quals.addCVRQualifiers(CVR); 18184cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith return BuildQualifiedType(T, Loc, Split.Quals); 18194cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith } 18204cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 18214967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Qualifiers Q = Qualifiers::fromCVRMask(CVR); 18224967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Q.setUnaligned(CVRAU & DeclSpec::TQ_unaligned); 18234967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return BuildQualifiedType(T, Loc, Q, DS); 18244cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith} 18254cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 1826075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara/// \brief Build a paren type including \p T. 1827075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo BagnaraQualType Sema::BuildParenType(QualType T) { 1828075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara return Context.getParenType(T); 1829075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara} 1830075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara 1831f85e193739c953358c865005855253af4f68a497John McCall/// Given that we're building a pointer or reference to the given 1832f85e193739c953358c865005855253af4f68a497John McCallstatic QualType inferARCLifetimeForPointee(Sema &S, QualType type, 1833f85e193739c953358c865005855253af4f68a497John McCall SourceLocation loc, 1834f85e193739c953358c865005855253af4f68a497John McCall bool isReference) { 1835f85e193739c953358c865005855253af4f68a497John McCall // Bail out if retention is unrequired or already specified. 1836f85e193739c953358c865005855253af4f68a497John McCall if (!type->isObjCLifetimeType() || 1837f85e193739c953358c865005855253af4f68a497John McCall type.getObjCLifetime() != Qualifiers::OCL_None) 1838f85e193739c953358c865005855253af4f68a497John McCall return type; 1839f85e193739c953358c865005855253af4f68a497John McCall 1840f85e193739c953358c865005855253af4f68a497John McCall Qualifiers::ObjCLifetime implicitLifetime = Qualifiers::OCL_None; 1841f85e193739c953358c865005855253af4f68a497John McCall 1842f85e193739c953358c865005855253af4f68a497John McCall // If the object type is const-qualified, we can safely use 1843f85e193739c953358c865005855253af4f68a497John McCall // __unsafe_unretained. This is safe (because there are no read 1844f85e193739c953358c865005855253af4f68a497John McCall // barriers), and it'll be safe to coerce anything but __weak* to 1845f85e193739c953358c865005855253af4f68a497John McCall // the resulting type. 1846f85e193739c953358c865005855253af4f68a497John McCall if (type.isConstQualified()) { 1847f85e193739c953358c865005855253af4f68a497John McCall implicitLifetime = Qualifiers::OCL_ExplicitNone; 1848f85e193739c953358c865005855253af4f68a497John McCall 1849f85e193739c953358c865005855253af4f68a497John McCall // Otherwise, check whether the static type does not require 1850f85e193739c953358c865005855253af4f68a497John McCall // retaining. This currently only triggers for Class (possibly 1851f85e193739c953358c865005855253af4f68a497John McCall // protocol-qualifed, and arrays thereof). 1852f85e193739c953358c865005855253af4f68a497John McCall } else if (type->isObjCARCImplicitlyUnretainedType()) { 1853f85e193739c953358c865005855253af4f68a497John McCall implicitLifetime = Qualifiers::OCL_ExplicitNone; 18545b76f373d23cc3b292ecf523349aaaa388eea375Argyrios Kyrtzidis 1855ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman // If we are in an unevaluated context, like sizeof, skip adding a 1856ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman // qualification. 185771f55f771794674a410171dbf3cb5dbedf95d033David Blaikie } else if (S.isUnevaluatedContext()) { 1858ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman return type; 1859f85e193739c953358c865005855253af4f68a497John McCall 1860e8c904ff343f440e213b88e6963f5ebfbec7ae60John McCall // If that failed, give an error and recover using __strong. __strong 1861e8c904ff343f440e213b88e6963f5ebfbec7ae60John McCall // is the option most likely to prevent spurious second-order diagnostics, 1862e8c904ff343f440e213b88e6963f5ebfbec7ae60John McCall // like when binding a reference to a field. 1863f85e193739c953358c865005855253af4f68a497John McCall } else { 1864f85e193739c953358c865005855253af4f68a497John McCall // These types can show up in private ivars in system headers, so 1865f85e193739c953358c865005855253af4f68a497John McCall // we need this to not be an error in those cases. Instead we 1866f85e193739c953358c865005855253af4f68a497John McCall // want to delay. 1867f85e193739c953358c865005855253af4f68a497John McCall if (S.DelayedDiagnostics.shouldDelayDiagnostics()) { 1868ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman S.DelayedDiagnostics.add( 1869ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman sema::DelayedDiagnostic::makeForbiddenType(loc, 1870ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman diag::err_arc_indirect_no_ownership, type, isReference)); 1871f85e193739c953358c865005855253af4f68a497John McCall } else { 1872ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman S.Diag(loc, diag::err_arc_indirect_no_ownership) << type << isReference; 1873f85e193739c953358c865005855253af4f68a497John McCall } 1874e8c904ff343f440e213b88e6963f5ebfbec7ae60John McCall implicitLifetime = Qualifiers::OCL_Strong; 1875f85e193739c953358c865005855253af4f68a497John McCall } 1876f85e193739c953358c865005855253af4f68a497John McCall assert(implicitLifetime && "didn't infer any lifetime!"); 1877f85e193739c953358c865005855253af4f68a497John McCall 1878f85e193739c953358c865005855253af4f68a497John McCall Qualifiers qs; 1879f85e193739c953358c865005855253af4f68a497John McCall qs.addObjCLifetime(implicitLifetime); 1880f85e193739c953358c865005855253af4f68a497John McCall return S.Context.getQualifiedType(type, qs); 1881f85e193739c953358c865005855253af4f68a497John McCall} 1882f85e193739c953358c865005855253af4f68a497John McCall 18836bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hinesstatic std::string getFunctionQualifiersAsString(const FunctionProtoType *FnTy){ 18846bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines std::string Quals = 18856bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines Qualifiers::fromCVRMask(FnTy->getTypeQuals()).getAsString(); 18866bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 18876bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines switch (FnTy->getRefQualifier()) { 18886bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines case RQ_None: 18896bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines break; 18906bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 18916bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines case RQ_LValue: 18926bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (!Quals.empty()) 18936bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines Quals += ' '; 18946bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines Quals += '&'; 18956bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines break; 18966bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 18976bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines case RQ_RValue: 18986bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (!Quals.empty()) 18996bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines Quals += ' '; 19006bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines Quals += "&&"; 19016bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines break; 19026bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines } 19036bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 19046bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines return Quals; 19056bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines} 19066bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 19076bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hinesnamespace { 19086bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// Kinds of declarator that cannot contain a qualified function type. 19096bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// 19106bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// C++98 [dcl.fct]p4 / C++11 [dcl.fct]p6: 19116bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// a function type with a cv-qualifier or a ref-qualifier can only appear 19126bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// at the topmost level of a type. 19136bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// 19146bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// Parens and member pointers are permitted. We don't diagnose array and 19156bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// function declarators, because they don't allow function types at all. 19166bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// 19176bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// The values of this enum are used in diagnostics. 19186bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hinesenum QualifiedFunctionKind { QFK_BlockPointer, QFK_Pointer, QFK_Reference }; 19194967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar} // end anonymous namespace 19206bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 19216bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// Check whether the type T is a qualified function type, and if it is, 19226bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// diagnose that it cannot be contained within the given kind of declarator. 19236bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hinesstatic bool checkQualifiedFunction(Sema &S, QualType T, SourceLocation Loc, 19246bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines QualifiedFunctionKind QFK) { 19256bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // Does T refer to a function type with a cv-qualifier or a ref-qualifier? 19266bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines const FunctionProtoType *FPT = T->getAs<FunctionProtoType>(); 19276bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (!FPT || (FPT->getTypeQuals() == 0 && FPT->getRefQualifier() == RQ_None)) 19286bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines return false; 19296bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 19306bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines S.Diag(Loc, diag::err_compound_qualified_function_type) 19316bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines << QFK << isa<FunctionType>(T.IgnoreParens()) << T 19326bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines << getFunctionQualifiersAsString(FPT); 19336bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines return true; 19346bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines} 19356bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 1936cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \brief Build a pointer type. 1937cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1938cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param T The type to which we'll be building a pointer. 1939cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1940cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Loc The location of the entity whose type involves this 1941cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// pointer type or, if there is no such entity, the location of the 1942cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type that will have pointer type. 1943cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1944cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Entity The name of the entity that involves the pointer 1945cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type, if known. 1946cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1947cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \returns A suitable pointer type, if there are no 1948cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// errors. Otherwise, returns a NULL type. 19492865474261a608c7873b87ba4af110d17907896dJohn McCallQualType Sema::BuildPointerType(QualType T, 1950cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor SourceLocation Loc, DeclarationName Entity) { 1951cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T->isReferenceType()) { 1952cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C++ 8.3.2p4: There shall be no ... pointers to references ... 1953cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_illegal_decl_pointer_to_reference) 1954ac406052f7b980f8caa6b07b4a8d0867d53852c4John McCall << getPrintableNameForEntity(Entity) << T; 1955cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 1956cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 1957cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 19586bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (checkQualifiedFunction(*this, T, Loc, QFK_Pointer)) 19596bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines return QualType(); 19606bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 1961c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall assert(!T->isObjCObjectType() && "Should build ObjCObjectPointerType"); 196292e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 1963f85e193739c953358c865005855253af4f68a497John McCall // In ARC, it is forbidden to build pointers to unqualified pointers. 19644e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjCAutoRefCount) 1965f85e193739c953358c865005855253af4f68a497John McCall T = inferARCLifetimeForPointee(*this, T, Loc, /*reference*/ false); 1966f85e193739c953358c865005855253af4f68a497John McCall 1967cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // Build the pointer type. 19682865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getPointerType(T); 1969cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 1970cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1971cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \brief Build a reference type. 1972cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1973cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param T The type to which we'll be building a reference. 1974cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1975cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Loc The location of the entity whose type involves this 1976cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// reference type or, if there is no such entity, the location of the 1977cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type that will have reference type. 1978cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1979cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Entity The name of the entity that involves the reference 1980cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type, if known. 1981cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1982cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \returns A suitable reference type, if there are no 1983cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// errors. Otherwise, returns a NULL type. 198454e14c4db764c0636160d26c5bbf491637c83a76John McCallQualType Sema::BuildReferenceType(QualType T, bool SpelledAsLValue, 19852865474261a608c7873b87ba4af110d17907896dJohn McCall SourceLocation Loc, 198654e14c4db764c0636160d26c5bbf491637c83a76John McCall DeclarationName Entity) { 198791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier assert(Context.getCanonicalType(T) != Context.OverloadTy && 19889625e44c0252485277a340746ed8ac950686156fDouglas Gregor "Unresolved overloaded function type"); 198991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 199069d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // C++0x [dcl.ref]p6: 199191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // If a typedef (7.1.3), a type template-parameter (14.3.1), or a 199291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // decltype-specifier (7.1.6.2) denotes a type TR that is a reference to a 199391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // type T, an attempt to create the type "lvalue reference to cv TR" creates 199491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // the type "lvalue reference to T", while an attempt to create the type 199569d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // "rvalue reference to cv TR" creates the type TR. 199654e14c4db764c0636160d26c5bbf491637c83a76John McCall bool LValueRef = SpelledAsLValue || T->getAs<LValueReferenceType>(); 199754e14c4db764c0636160d26c5bbf491637c83a76John McCall 199854e14c4db764c0636160d26c5bbf491637c83a76John McCall // C++ [dcl.ref]p4: There shall be no references to references. 199954e14c4db764c0636160d26c5bbf491637c83a76John McCall // 200054e14c4db764c0636160d26c5bbf491637c83a76John McCall // According to C++ DR 106, references to references are only 200154e14c4db764c0636160d26c5bbf491637c83a76John McCall // diagnosed when they are written directly (e.g., "int & &"), 200254e14c4db764c0636160d26c5bbf491637c83a76John McCall // but not when they happen via a typedef: 200354e14c4db764c0636160d26c5bbf491637c83a76John McCall // 200454e14c4db764c0636160d26c5bbf491637c83a76John McCall // typedef int& intref; 200554e14c4db764c0636160d26c5bbf491637c83a76John McCall // typedef intref& intref2; 200654e14c4db764c0636160d26c5bbf491637c83a76John McCall // 200754e14c4db764c0636160d26c5bbf491637c83a76John McCall // Parser::ParseDeclaratorInternal diagnoses the case where 200854e14c4db764c0636160d26c5bbf491637c83a76John McCall // references are written directly; here, we handle the 200969d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // collapsing of references-to-references as described in C++0x. 201069d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // DR 106 and 540 introduce reference-collapsing into C++98/03. 2011cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 2012cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C++ [dcl.ref]p1: 201333a3138a0862cafdd9ff1332b834454a79cd2cdcEli Friedman // A declarator that specifies the type "reference to cv void" 2014cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // is ill-formed. 2015cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T->isVoidType()) { 2016cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_reference_to_void); 2017cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 2018cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 2019cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 20206bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (checkQualifiedFunction(*this, T, Loc, QFK_Reference)) 20216bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines return QualType(); 20226bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 2023f85e193739c953358c865005855253af4f68a497John McCall // In ARC, it is forbidden to build references to unqualified pointers. 20244e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjCAutoRefCount) 2025f85e193739c953358c865005855253af4f68a497John McCall T = inferARCLifetimeForPointee(*this, T, Loc, /*reference*/ true); 2026f85e193739c953358c865005855253af4f68a497John McCall 2027cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // Handle restrict on references. 20287c80bd64032e610c0dbd74fc0ef6ea334447f2fdSebastian Redl if (LValueRef) 20292865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getLValueReferenceType(T, SpelledAsLValue); 20302865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getRValueReferenceType(T); 2031cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 2032cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 20334967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar/// \brief Build a Pipe type. 20344967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar/// 20354967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar/// \param T The type to which we'll be building a Pipe. 20364967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar/// 20374967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar/// \param Loc We do not use it for now. 20384967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar/// 20394967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar/// \returns A suitable pipe type, if there are no errors. Otherwise, returns a 20404967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar/// NULL type. 20414967a710c84587c654b56c828382219c3937dacbPirama Arumuga NainarQualType Sema::BuildPipeType(QualType T, SourceLocation Loc) { 20424967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar assert(!T->isObjCObjectType() && "Should build ObjCObjectPointerType"); 20434967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 20444967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Build the pipe type. 20454967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return Context.getPipeType(T); 20464967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar} 20474967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 2048e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner/// Check whether the specified array size makes the array type a VLA. If so, 2049e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner/// return true, if not, return the size of the array in SizeVal. 2050282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smithstatic bool isArraySizeVLA(Sema &S, Expr *ArraySize, llvm::APSInt &SizeVal) { 2051282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // If the size is an ICE, it certainly isn't a VLA. If we're in a GNU mode 2052282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // (like gnu99, but not c99) accept any evaluatable value as an extension. 2053ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor class VLADiagnoser : public Sema::VerifyICEDiagnoser { 2054ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor public: 2055ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor VLADiagnoser() : Sema::VerifyICEDiagnoser(true) {} 205691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 2057651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines void diagnoseNotICE(Sema &S, SourceLocation Loc, SourceRange SR) override { 2058ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor } 205991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 2060651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines void diagnoseFold(Sema &S, SourceLocation Loc, SourceRange SR) override { 2061ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor S.Diag(Loc, diag::ext_vla_folded_to_constant) << SR; 2062ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor } 2063ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor } Diagnoser; 206491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 2065ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor return S.VerifyIntegerConstantExpression(ArraySize, &SizeVal, Diagnoser, 20664967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.LangOpts.GNUMode || 20674967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.LangOpts.OpenCL).isInvalid(); 2068e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner} 2069e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner 2070cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \brief Build an array type. 2071cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 2072cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param T The type of each element in the array. 2073cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 2074cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param ASM C99 array size modifier (e.g., '*', 'static'). 20751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 20761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// \param ArraySize Expression describing the size of the array. 2077cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 2078efce31f51d6e7e31e125f96c20f6cdab3ead0a47James Dennett/// \param Brackets The range from the opening '[' to the closing ']'. 2079cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 2080cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Entity The name of the entity that involves the array 2081cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type, if known. 2082cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 2083cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \returns A suitable array type, if there are no errors. Otherwise, 2084cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// returns a NULL type. 2085cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas GregorQualType Sema::BuildArrayType(QualType T, ArrayType::ArraySizeModifier ASM, 2086cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Expr *ArraySize, unsigned Quals, 20877e7eb3da052a6d80ddf2377cab0384c798f73f75Douglas Gregor SourceRange Brackets, DeclarationName Entity) { 20880953e767ff7817f97b3ab20896b229891eeff45bJohn McCall 20897e7eb3da052a6d80ddf2377cab0384c798f73f75Douglas Gregor SourceLocation Loc = Brackets.getBegin(); 20904e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus) { 2091138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // C++ [dcl.array]p1: 2092138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // T is called the array element type; this type shall not be a reference 209391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // type, the (possibly cv-qualified) type void, a function type or an 2094138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // abstract class type. 2095138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // 2096bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // C++ [dcl.array]p3: 2097bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // When several "array of" specifications are adjacent, [...] only the 2098bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // first of the constant expressions that specify the bounds of the arrays 2099bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // may be omitted. 2100bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // 2101138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // Note: function types are handled in the common path with C. 2102138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor if (T->isReferenceType()) { 2103138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor Diag(Loc, diag::err_illegal_decl_array_of_references) 2104138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor << getPrintableNameForEntity(Entity) << T; 2105138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor return QualType(); 2106138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor } 210791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 2108bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith if (T->isVoidType() || T->isIncompleteArrayType()) { 2109923d56d436f750bc1f29db50e641078725558a1bSebastian Redl Diag(Loc, diag::err_illegal_decl_array_incomplete_type) << T; 2110923d56d436f750bc1f29db50e641078725558a1bSebastian Redl return QualType(); 2111923d56d436f750bc1f29db50e641078725558a1bSebastian Redl } 211291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 211391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier if (RequireNonAbstractType(Brackets.getBegin(), T, 2114138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor diag::err_array_of_abstract_type)) 2115138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor return QualType(); 211691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 2117651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // Mentioning a member pointer type for an array type causes us to lock in 2118651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // an inheritance model, even if it's inside an unused typedef. 2119651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (Context.getTargetInfo().getCXXABI().isMicrosoft()) 2120651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (const MemberPointerType *MPTy = T->getAs<MemberPointerType>()) 2121651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (!MPTy->getClass()->isDependentType()) 212287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar (void)isCompleteType(Loc, T); 2123651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 2124923d56d436f750bc1f29db50e641078725558a1bSebastian Redl } else { 2125138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // C99 6.7.5.2p1: If the element type is an incomplete or function type, 2126138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // reject it (e.g. void ary[7], struct foo ary[7], void ary[7]()) 2127923d56d436f750bc1f29db50e641078725558a1bSebastian Redl if (RequireCompleteType(Loc, T, 2128923d56d436f750bc1f29db50e641078725558a1bSebastian Redl diag::err_illegal_decl_array_incomplete_type)) 2129923d56d436f750bc1f29db50e641078725558a1bSebastian Redl return QualType(); 2130923d56d436f750bc1f29db50e641078725558a1bSebastian Redl } 2131cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 2132cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T->isFunctionType()) { 2133cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_illegal_decl_array_of_functions) 2134ac406052f7b980f8caa6b07b4a8d0867d53852c4John McCall << getPrintableNameForEntity(Entity) << T; 2135cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 2136cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 21371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 21386217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (const RecordType *EltTy = T->getAs<RecordType>()) { 2139cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // If the element type is a struct or union that contains a variadic 2140cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // array, accept it as a GNU extension: C99 6.7.2.1p2. 2141cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (EltTy->getDecl()->hasFlexibleArrayMember()) 2142cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::ext_flexible_array_in_array) << T; 2143c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else if (T->isObjCObjectType()) { 2144c7c11b1ba6a110f2416889cc3576fe33277b2a33Chris Lattner Diag(Loc, diag::err_objc_array_of_interfaces) << T; 2145c7c11b1ba6a110f2416889cc3576fe33277b2a33Chris Lattner return QualType(); 2146cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 21471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2148806054db6653d29cb0d9692df3612cbcd03d0530John McCall // Do placeholder conversions on the array size expression. 2149806054db6653d29cb0d9692df3612cbcd03d0530John McCall if (ArraySize && ArraySize->hasPlaceholderType()) { 2150806054db6653d29cb0d9692df3612cbcd03d0530John McCall ExprResult Result = CheckPlaceholderExpr(ArraySize); 2151806054db6653d29cb0d9692df3612cbcd03d0530John McCall if (Result.isInvalid()) return QualType(); 2152c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines ArraySize = Result.get(); 2153806054db6653d29cb0d9692df3612cbcd03d0530John McCall } 2154806054db6653d29cb0d9692df3612cbcd03d0530John McCall 21555e3c67b4bd894a926282d24b4d0cbc0e123c9f4aJohn McCall // Do lvalue-to-rvalue conversions on the array size expression. 2156429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ArraySize && !ArraySize->isRValue()) { 2157429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult Result = DefaultLvalueConversion(ArraySize); 2158429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (Result.isInvalid()) 2159429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return QualType(); 2160429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 2161c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines ArraySize = Result.get(); 2162429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 21635e3c67b4bd894a926282d24b4d0cbc0e123c9f4aJohn McCall 2164cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C99 6.7.5.2p1: The size expression shall have integer type. 2165282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // C++11 allows contextual conversions to such types. 216680ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith if (!getLangOpts().CPlusPlus11 && 2167282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith ArraySize && !ArraySize->isTypeDependent() && 21681274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor !ArraySize->getType()->isIntegralOrUnscopedEnumerationType()) { 2169cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(ArraySize->getLocStart(), diag::err_array_size_non_int) 2170cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor << ArraySize->getType() << ArraySize->getSourceRange(); 2171cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 2172cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 2173282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith 21742767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor llvm::APSInt ConstVal(Context.getTypeSize(Context.getSizeType())); 2175cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (!ArraySize) { 2176f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman if (ASM == ArrayType::Star) 21776bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines T = Context.getVariableArrayType(T, nullptr, ASM, Quals, Brackets); 2178f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman else 2179f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman T = Context.getIncompleteArrayType(T, ASM, Quals); 2180ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor } else if (ArraySize->isTypeDependent() || ArraySize->isValueDependent()) { 21817e7eb3da052a6d80ddf2377cab0384c798f73f75Douglas Gregor T = Context.getDependentSizedArrayType(T, ArraySize, ASM, Quals, Brackets); 2182282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith } else if ((!T->isDependentType() && !T->isIncompleteType() && 2183282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith !T->isConstantSizeType()) || 2184282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith isArraySizeVLA(*this, ArraySize, ConstVal)) { 2185282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // Even in C++11, don't allow contextual conversions in the array bound 2186282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // of a VLA. 218780ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith if (getLangOpts().CPlusPlus11 && 2188282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith !ArraySize->getType()->isIntegralOrUnscopedEnumerationType()) { 2189282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith Diag(ArraySize->getLocStart(), diag::err_array_size_non_int) 2190282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith << ArraySize->getType() << ArraySize->getSourceRange(); 2191282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith return QualType(); 2192282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith } 2193282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith 2194e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner // C99: an array with an element type that has a non-constant-size is a VLA. 2195e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner // C99: an array with a non-ICE size is a VLA. We accept any expression 2196e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner // that we can fold to a non-zero positive value as an extension. 21977e7eb3da052a6d80ddf2377cab0384c798f73f75Douglas Gregor T = Context.getVariableArrayType(T, ArraySize, ASM, Quals, Brackets); 2198cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } else { 2199cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C99 6.7.5.2p1: If the expression is a constant expression, it shall 2200cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // have a value greater than zero. 2201923d56d436f750bc1f29db50e641078725558a1bSebastian Redl if (ConstVal.isSigned() && ConstVal.isNegative()) { 2202b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth if (Entity) 2203b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth Diag(ArraySize->getLocStart(), diag::err_decl_negative_array_size) 2204b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth << getPrintableNameForEntity(Entity) << ArraySize->getSourceRange(); 2205b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth else 2206b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth Diag(ArraySize->getLocStart(), diag::err_typecheck_negative_array_size) 2207b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth << ArraySize->getSourceRange(); 2208923d56d436f750bc1f29db50e641078725558a1bSebastian Redl return QualType(); 2209923d56d436f750bc1f29db50e641078725558a1bSebastian Redl } 2210923d56d436f750bc1f29db50e641078725558a1bSebastian Redl if (ConstVal == 0) { 221102024a9f0d8e6c898de276193af604c42ee41269Douglas Gregor // GCC accepts zero sized static arrays. We allow them when 221202024a9f0d8e6c898de276193af604c42ee41269Douglas Gregor // we're not in a SFINAE context. 221391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier Diag(ArraySize->getLocStart(), 221402024a9f0d8e6c898de276193af604c42ee41269Douglas Gregor isSFINAEContext()? diag::err_typecheck_zero_array_size 221502024a9f0d8e6c898de276193af604c42ee41269Douglas Gregor : diag::ext_typecheck_zero_array_size) 2216923d56d436f750bc1f29db50e641078725558a1bSebastian Redl << ArraySize->getSourceRange(); 221720cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne 221820cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne if (ASM == ArrayType::Static) { 221920cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne Diag(ArraySize->getLocStart(), 222020cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne diag::warn_typecheck_zero_static_array_size) 222120cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne << ArraySize->getSourceRange(); 222220cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne ASM = ArrayType::Normal; 222320cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne } 222491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier } else if (!T->isDependentType() && !T->isVariablyModifiedType() && 2225fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali !T->isIncompleteType() && !T->isUndeducedType()) { 222691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // Is the array too large? 22272767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor unsigned ActiveSizeBits 22282767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor = ConstantArrayType::getNumAddressingBits(Context, T, ConstVal); 2229ee2f8f2f7c4eacfa305a29fcd916d63c650ca847Richard Trieu if (ActiveSizeBits > ConstantArrayType::getMaxSizeBits(Context)) { 22302767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor Diag(ArraySize->getLocStart(), diag::err_array_too_large) 22312767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor << ConstVal.toString(10) 22322767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor << ArraySize->getSourceRange(); 2233ee2f8f2f7c4eacfa305a29fcd916d63c650ca847Richard Trieu return QualType(); 2234ee2f8f2f7c4eacfa305a29fcd916d63c650ca847Richard Trieu } 22351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 223691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 223746a617a792bfab0d9b1e057371ea3b9540802226John McCall T = Context.getConstantArrayType(T, ConstVal, ASM, Quals); 2238cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 2239617bb317a7aeb6c3468a4170a5d6c1058da7cea1Joey Gouly 2240617bb317a7aeb6c3468a4170a5d6c1058da7cea1Joey Gouly // OpenCL v1.2 s6.9.d: variable length arrays are not supported. 2241617bb317a7aeb6c3468a4170a5d6c1058da7cea1Joey Gouly if (getLangOpts().OpenCL && T->isVariableArrayType()) { 2242617bb317a7aeb6c3468a4170a5d6c1058da7cea1Joey Gouly Diag(Loc, diag::err_opencl_vla); 2243617bb317a7aeb6c3468a4170a5d6c1058da7cea1Joey Gouly return QualType(); 2244617bb317a7aeb6c3468a4170a5d6c1058da7cea1Joey Gouly } 2245af40776922bc5c28e740adb0342faa09f35b0068David Chisnall // If this is not C99, extwarn about VLA's and C99 array size modifiers. 22464e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!getLangOpts().C99) { 22470fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor if (T->isVariableArrayType()) { 2248a481ec4150ad203440852a2bfee0883dd26f7530Douglas Gregor // Prohibit the use of VLAs during template argument deduction. 22494967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (isSFINAEContext()) { 2250a481ec4150ad203440852a2bfee0883dd26f7530Douglas Gregor Diag(Loc, diag::err_vla_in_sfinae); 2251a481ec4150ad203440852a2bfee0883dd26f7530Douglas Gregor return QualType(); 2252a481ec4150ad203440852a2bfee0883dd26f7530Douglas Gregor } 22530fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor // Just extwarn about VLAs. 22540fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor else 22558a3f9e46cb988d2c664395b21910091e3730ae82Richard Smith Diag(Loc, diag::ext_vla); 22560fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor } else if (ASM != ArrayType::Normal || Quals != 0) 2257d7c56e1114bfe7d461786903bb720d2c6efc05a1Richard Smith Diag(Loc, 22584e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie getLangOpts().CPlusPlus? diag::err_c99_array_usage_cxx 225987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar : diag::ext_c99_array_usage) << ASM; 2260cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 2261cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 2262630f4bb9f12e330438281c4e46deb6656620b73aDmitri Gribenko if (T->isVariableArrayType()) { 2263630f4bb9f12e330438281c4e46deb6656620b73aDmitri Gribenko // Warn about VLAs for -Wvla. 2264630f4bb9f12e330438281c4e46deb6656620b73aDmitri Gribenko Diag(Loc, diag::warn_vla_used); 2265630f4bb9f12e330438281c4e46deb6656620b73aDmitri Gribenko } 2266630f4bb9f12e330438281c4e46deb6656620b73aDmitri Gribenko 22674967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // OpenCL v2.0 s6.12.5 - Arrays of blocks are not supported. 22684967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // OpenCL v2.0 s6.16.13.1 - Arrays of pipe type are not supported. 22694967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // OpenCL v2.0 s6.9.b - Arrays of image/sampler type are not supported. 22704967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (getLangOpts().OpenCL) { 22714967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar const QualType ArrType = Context.getBaseElementType(T); 22724967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (ArrType->isBlockPointerType() || ArrType->isPipeType() || 22734967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar ArrType->isSamplerT() || ArrType->isImageType()) { 22744967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Diag(Loc, diag::err_opencl_invalid_type_array) << ArrType; 22754967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return QualType(); 22764967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 22774967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 22784967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 2279cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return T; 2280cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 22819cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor 22829cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor/// \brief Build an ext-vector type. 22839cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor/// 22849cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor/// Run the required checks for the extended vector type. 22859ae2f076ca5ab1feb3ba95629099ec2319833701John McCallQualType Sema::BuildExtVectorType(QualType T, Expr *ArraySize, 22869cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor SourceLocation AttrLoc) { 22874967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Unlike gcc's vector_size attribute, we do not allow vectors to be defined 22889cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor // in conjunction with complex types (pointers, arrays, functions, etc.). 22894967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // 22904967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Additionally, OpenCL prohibits vectors of booleans (they're considered a 22914967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // reserved data type under OpenCL v2.0 s6.1.4), we don't support selects 22924967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // on bitvectors, and we have no well-defined ABI for bitvectors, so vectors 22934967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // of bool aren't allowed. 22944967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if ((!T->isDependentType() && !T->isIntegerType() && 22954967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar !T->isRealFloatingType()) || 22964967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar T->isBooleanType()) { 22979cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor Diag(AttrLoc, diag::err_attribute_invalid_vector_type) << T; 22989cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor return QualType(); 22999cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor } 23009cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor 23019ae2f076ca5ab1feb3ba95629099ec2319833701John McCall if (!ArraySize->isTypeDependent() && !ArraySize->isValueDependent()) { 23029cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor llvm::APSInt vecSize(32); 23039ae2f076ca5ab1feb3ba95629099ec2319833701John McCall if (!ArraySize->isIntegerConstantExpr(vecSize, Context)) { 23049f939f75c64770c746d78579f75a49f9c657e426Aaron Ballman Diag(AttrLoc, diag::err_attribute_argument_type) 23059f939f75c64770c746d78579f75a49f9c657e426Aaron Ballman << "ext_vector_type" << AANT_ArgumentIntegerConstant 23069f939f75c64770c746d78579f75a49f9c657e426Aaron Ballman << ArraySize->getSourceRange(); 23079cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor return QualType(); 23089cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor } 23091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23104967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Unlike gcc's vector_size attribute, the size is specified as the 23119cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor // number of elements, not the number of bytes. 23121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue()); 23131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23149cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor if (vectorSize == 0) { 23159cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor Diag(AttrLoc, diag::err_attribute_zero_size) 23169ae2f076ca5ab1feb3ba95629099ec2319833701John McCall << ArraySize->getSourceRange(); 23179cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor return QualType(); 23189cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor } 23191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23201652ed1cd2cb63e0d0cb74c67a40d9dc5cab6b89Eli Friedman if (VectorType::isVectorSizeTooLarge(vectorSize)) { 23211652ed1cd2cb63e0d0cb74c67a40d9dc5cab6b89Eli Friedman Diag(AttrLoc, diag::err_attribute_size_too_large) 23221652ed1cd2cb63e0d0cb74c67a40d9dc5cab6b89Eli Friedman << ArraySize->getSourceRange(); 23231652ed1cd2cb63e0d0cb74c67a40d9dc5cab6b89Eli Friedman return QualType(); 23241652ed1cd2cb63e0d0cb74c67a40d9dc5cab6b89Eli Friedman } 23251652ed1cd2cb63e0d0cb74c67a40d9dc5cab6b89Eli Friedman 23264ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor return Context.getExtVectorType(T, vectorSize); 23271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 23281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 23299ae2f076ca5ab1feb3ba95629099ec2319833701John McCall return Context.getDependentSizedExtVectorType(T, ArraySize, AttrLoc); 23309cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor} 23311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2332ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedmanbool Sema::CheckFunctionReturnType(QualType T, SourceLocation Loc) { 2333724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor if (T->isArrayType() || T->isFunctionType()) { 233491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier Diag(Loc, diag::err_func_returning_array_function) 233558408bc4ead86b08af56cd06fc966fd858b48b2dDouglas Gregor << T->isFunctionType() << T; 2336ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman return true; 2337724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor } 2338aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov 2339aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // Functions cannot return half FP. 2340176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines if (T->isHalfType() && !getLangOpts().HalfArgsAndReturns) { 2341aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov Diag(Loc, diag::err_parameters_retval_cannot_have_fp16_type) << 1 << 2342aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov FixItHint::CreateInsertion(Loc, "*"); 2343ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman return true; 2344ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman } 2345ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman 2346ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman // Methods cannot return interface types. All ObjC objects are 2347ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman // passed by reference. 2348ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman if (T->isObjCObjectType()) { 2349ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman Diag(Loc, diag::err_object_cannot_be_passed_returned_by_value) << 0 << T; 2350ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman return 0; 2351aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov } 2352aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov 2353ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman return false; 2354ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman} 2355ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman 23564967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar/// Check the extended parameter information. Most of the necessary 23574967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar/// checking should occur when applying the parameter attribute; the 23584967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar/// only other checks required are positional restrictions. 23594967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainarstatic void checkExtParameterInfos(Sema &S, ArrayRef<QualType> paramTypes, 23604967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar const FunctionProtoType::ExtProtoInfo &EPI, 23614967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar llvm::function_ref<SourceLocation(unsigned)> getParamLoc) { 23624967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar assert(EPI.ExtParameterInfos && "shouldn't get here without param infos"); 23634967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 23644967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar bool hasCheckedSwiftCall = false; 23654967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar auto checkForSwiftCC = [&](unsigned paramIndex) { 23664967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Only do this once. 23674967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (hasCheckedSwiftCall) return; 23684967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar hasCheckedSwiftCall = true; 23694967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (EPI.ExtInfo.getCC() == CC_Swift) return; 23704967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(getParamLoc(paramIndex), diag::err_swift_param_attr_not_swiftcall) 23714967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar << getParameterABISpelling(EPI.ExtParameterInfos[paramIndex].getABI()); 23724967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar }; 23734967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 23744967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar for (size_t paramIndex = 0, numParams = paramTypes.size(); 23754967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar paramIndex != numParams; ++paramIndex) { 23764967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar switch (EPI.ExtParameterInfos[paramIndex].getABI()) { 23774967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Nothing interesting to check for orindary-ABI parameters. 23784967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case ParameterABI::Ordinary: 23794967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar continue; 23804967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 23814967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // swift_indirect_result parameters must be a prefix of the function 23824967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // arguments. 23834967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case ParameterABI::SwiftIndirectResult: 23844967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar checkForSwiftCC(paramIndex); 23854967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (paramIndex != 0 && 23864967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar EPI.ExtParameterInfos[paramIndex - 1].getABI() 23874967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar != ParameterABI::SwiftIndirectResult) { 23884967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(getParamLoc(paramIndex), 23894967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar diag::err_swift_indirect_result_not_first); 23904967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 23914967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar continue; 23924967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 23934967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // swift_context parameters must be the last parameter except for 23944967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // a possible swift_error parameter. 23954967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case ParameterABI::SwiftContext: 23964967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar checkForSwiftCC(paramIndex); 23974967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (!(paramIndex == numParams - 1 || 23984967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar (paramIndex == numParams - 2 && 23994967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar EPI.ExtParameterInfos[numParams - 1].getABI() 24004967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar == ParameterABI::SwiftErrorResult))) { 24014967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(getParamLoc(paramIndex), 24024967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar diag::err_swift_context_not_before_swift_error_result); 24034967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 24044967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar continue; 24054967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 24064967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // swift_error parameters must be the last parameter. 24074967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case ParameterABI::SwiftErrorResult: 24084967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar checkForSwiftCC(paramIndex); 24094967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (paramIndex != numParams - 1) { 24104967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(getParamLoc(paramIndex), 24114967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar diag::err_swift_error_result_not_last); 24124967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } else if (paramIndex == 0 || 24134967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar EPI.ExtParameterInfos[paramIndex - 1].getABI() 24144967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar != ParameterABI::SwiftContext) { 24154967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(getParamLoc(paramIndex), 24164967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar diag::err_swift_error_result_not_after_swift_context); 24174967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 24184967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar continue; 24194967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 24204967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar llvm_unreachable("bad ABI kind"); 24214967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 24224967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar} 24234967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 2424ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli FriedmanQualType Sema::BuildFunctionType(QualType T, 2425c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines MutableArrayRef<QualType> ParamTypes, 2426ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman SourceLocation Loc, DeclarationName Entity, 2427ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman const FunctionProtoType::ExtProtoInfo &EPI) { 2428724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor bool Invalid = false; 2429ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman 2430ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman Invalid |= CheckFunctionReturnType(T, Loc); 2431ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman 2432bea522ff43a3f11c7a2bc7949119dbb9fce19e39Jordan Rose for (unsigned Idx = 0, Cnt = ParamTypes.size(); Idx < Cnt; ++Idx) { 2433aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // FIXME: Loc is too inprecise here, should use proper locations for args. 2434c910d4cfa5042f2c9da1eb4e0b6ed59240c0eeeeReid Kleckner QualType ParamType = Context.getAdjustedParameterType(ParamTypes[Idx]); 24352dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor if (ParamType->isVoidType()) { 2436724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor Diag(Loc, diag::err_param_with_void_type); 2437724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor Invalid = true; 2438176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines } else if (ParamType->isHalfType() && !getLangOpts().HalfArgsAndReturns) { 2439aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // Disallow half FP arguments. 2440aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov Diag(Loc, diag::err_parameters_retval_cannot_have_fp16_type) << 0 << 2441aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov FixItHint::CreateInsertion(Loc, "*"); 2442aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov Invalid = true; 2443724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor } 2444cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 244554e14c4db764c0636160d26c5bbf491637c83a76John McCall ParamTypes[Idx] = ParamType; 2446724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor } 2447724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor 24484967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (EPI.ExtParameterInfos) { 24494967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar checkExtParameterInfos(*this, ParamTypes, EPI, 24504967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar [=](unsigned i) { return Loc; }); 24514967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 24524967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 2453724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor if (Invalid) 2454724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor return QualType(); 2455724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor 2456bea522ff43a3f11c7a2bc7949119dbb9fce19e39Jordan Rose return Context.getFunctionType(T, ParamTypes, EPI); 2457724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor} 24581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2459949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \brief Build a member pointer type \c T Class::*. 2460949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// 2461949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \param T the type to which the member pointer refers. 2462949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \param Class the class type into which the member pointer points. 2463949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \param Loc the location where this type begins 2464949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \param Entity the name of the entity that will have this member pointer type 2465949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// 2466949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \returns a member pointer type, if successful, or a NULL type if there was 2467949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// an error. 24681eb4433ac451dc16f4133a88af2d002ac26c58efMike StumpQualType Sema::BuildMemberPointerType(QualType T, QualType Class, 24692865474261a608c7873b87ba4af110d17907896dJohn McCall SourceLocation Loc, 2470949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor DeclarationName Entity) { 2471949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // Verify that we're not building a pointer to pointer to function with 2472949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // exception specification. 2473949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (CheckDistantExceptionSpec(T)) { 2474949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor Diag(Loc, diag::err_distant_exception_spec); 24750e2c34f92f00628d48968dfea096d36381f494cbStephen Hines return QualType(); 2476949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor } 2477949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 2478737801257f795632175517ffce4a80c62fc7bff7Sebastian Redl // C++ 8.3.3p3: A pointer to member shall not point to ... a member 2479949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // with reference type, or "cv void." 2480949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (T->isReferenceType()) { 24818d4655d3b966da02fe0588767160448594cddd61Anders Carlsson Diag(Loc, diag::err_illegal_decl_mempointer_to_reference) 2482651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines << getPrintableNameForEntity(Entity) << T; 2483949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor return QualType(); 2484949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor } 2485949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 2486949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (T->isVoidType()) { 2487949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor Diag(Loc, diag::err_illegal_decl_mempointer_to_void) 2488651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines << getPrintableNameForEntity(Entity); 2489949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor return QualType(); 2490949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor } 2491949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 2492949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (!Class->isDependentType() && !Class->isRecordType()) { 2493949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor Diag(Loc, diag::err_mempointer_in_nonclass_type) << Class; 2494949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor return QualType(); 2495949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor } 2496949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 2497651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // Adjust the default free function calling convention to the default method 2498651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // calling convention. 249987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool IsCtorOrDtor = 250087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar (Entity.getNameKind() == DeclarationName::CXXConstructorName) || 250187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar (Entity.getNameKind() == DeclarationName::CXXDestructorName); 2502651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (T->isFunctionType()) 250387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar adjustMemberFunctionCC(T, /*IsStatic=*/false, IsCtorOrDtor, Loc); 2504ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner 25052865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getMemberPointerType(T, Class.getTypePtr()); 2506949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor} 25071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 25089a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// \brief Build a block pointer type. 25099a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// 25109a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// \param T The type to which we'll be building a block pointer. 25119a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// 2512efce31f51d6e7e31e125f96c20f6cdab3ead0a47James Dennett/// \param Loc The source location, used for diagnostics. 25139a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// 25149a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// \param Entity The name of the entity that involves the block pointer 25159a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// type, if known. 25169a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// 25179a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// \returns A suitable block pointer type, if there are no 25189a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// errors. Otherwise, returns a NULL type. 251991cbbbf506c892a26d4301e2b3ccd377b0938817Chad RosierQualType Sema::BuildBlockPointerType(QualType T, 25201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation Loc, 25219a917e4fac79aba20fbd25983c78396475078918Anders Carlsson DeclarationName Entity) { 25220953e767ff7817f97b3ab20896b229891eeff45bJohn McCall if (!T->isFunctionType()) { 25239a917e4fac79aba20fbd25983c78396475078918Anders Carlsson Diag(Loc, diag::err_nonfunction_block_type); 25249a917e4fac79aba20fbd25983c78396475078918Anders Carlsson return QualType(); 25259a917e4fac79aba20fbd25983c78396475078918Anders Carlsson } 25261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 25276bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (checkQualifiedFunction(*this, T, Loc, QFK_BlockPointer)) 25286bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines return QualType(); 25296bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 25302865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getBlockPointerType(T); 25319a917e4fac79aba20fbd25983c78396475078918Anders Carlsson} 25329a917e4fac79aba20fbd25983c78396475078918Anders Carlsson 2533b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCallQualType Sema::GetTypeFromParser(ParsedType Ty, TypeSourceInfo **TInfo) { 2534b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall QualType QT = Ty.get(); 25353f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor if (QT.isNull()) { 25366bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (TInfo) *TInfo = nullptr; 25373f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor return QualType(); 25383f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor } 25393f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor 25406bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines TypeSourceInfo *DI = nullptr; 2541f4c7371fb1d3cebcfb40abad4537bb82515704eaJohn McCall if (const LocInfoType *LIT = dyn_cast<LocInfoType>(QT)) { 2542e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis QT = LIT->getType(); 2543a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall DI = LIT->getTypeSourceInfo(); 2544e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis } 25451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2546a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall if (TInfo) *TInfo = DI; 2547e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis return QT; 2548e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis} 2549e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis 2550a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidisstatic void transferARCOwnershipToDeclaratorChunk(TypeProcessingState &state, 2551a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis Qualifiers::ObjCLifetime ownership, 2552a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis unsigned chunkIndex); 2553a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis 2554f85e193739c953358c865005855253af4f68a497John McCall/// Given that this is the declaration of a parameter under ARC, 2555f85e193739c953358c865005855253af4f68a497John McCall/// attempt to infer attributes and such for pointer-to-whatever 2556f85e193739c953358c865005855253af4f68a497John McCall/// types. 2557f85e193739c953358c865005855253af4f68a497John McCallstatic void inferARCWriteback(TypeProcessingState &state, 2558f85e193739c953358c865005855253af4f68a497John McCall QualType &declSpecType) { 2559f85e193739c953358c865005855253af4f68a497John McCall Sema &S = state.getSema(); 2560f85e193739c953358c865005855253af4f68a497John McCall Declarator &declarator = state.getDeclarator(); 2561f85e193739c953358c865005855253af4f68a497John McCall 2562f85e193739c953358c865005855253af4f68a497John McCall // TODO: should we care about decl qualifiers? 2563f85e193739c953358c865005855253af4f68a497John McCall 2564f85e193739c953358c865005855253af4f68a497John McCall // Check whether the declarator has the expected form. We walk 2565f85e193739c953358c865005855253af4f68a497John McCall // from the inside out in order to make the block logic work. 2566f85e193739c953358c865005855253af4f68a497John McCall unsigned outermostPointerIndex = 0; 2567f85e193739c953358c865005855253af4f68a497John McCall bool isBlockPointer = false; 2568f85e193739c953358c865005855253af4f68a497John McCall unsigned numPointers = 0; 2569f85e193739c953358c865005855253af4f68a497John McCall for (unsigned i = 0, e = declarator.getNumTypeObjects(); i != e; ++i) { 2570f85e193739c953358c865005855253af4f68a497John McCall unsigned chunkIndex = i; 2571f85e193739c953358c865005855253af4f68a497John McCall DeclaratorChunk &chunk = declarator.getTypeObject(chunkIndex); 2572f85e193739c953358c865005855253af4f68a497John McCall switch (chunk.Kind) { 2573f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Paren: 2574f85e193739c953358c865005855253af4f68a497John McCall // Ignore parens. 2575f85e193739c953358c865005855253af4f68a497John McCall break; 2576f85e193739c953358c865005855253af4f68a497John McCall 2577f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Reference: 2578f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Pointer: 2579f85e193739c953358c865005855253af4f68a497John McCall // Count the number of pointers. Treat references 2580f85e193739c953358c865005855253af4f68a497John McCall // interchangeably as pointers; if they're mis-ordered, normal 2581f85e193739c953358c865005855253af4f68a497John McCall // type building will discover that. 2582f85e193739c953358c865005855253af4f68a497John McCall outermostPointerIndex = chunkIndex; 2583f85e193739c953358c865005855253af4f68a497John McCall numPointers++; 2584f85e193739c953358c865005855253af4f68a497John McCall break; 2585f85e193739c953358c865005855253af4f68a497John McCall 2586f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::BlockPointer: 2587f85e193739c953358c865005855253af4f68a497John McCall // If we have a pointer to block pointer, that's an acceptable 2588f85e193739c953358c865005855253af4f68a497John McCall // indirect reference; anything else is not an application of 2589f85e193739c953358c865005855253af4f68a497John McCall // the rules. 2590f85e193739c953358c865005855253af4f68a497John McCall if (numPointers != 1) return; 2591f85e193739c953358c865005855253af4f68a497John McCall numPointers++; 2592f85e193739c953358c865005855253af4f68a497John McCall outermostPointerIndex = chunkIndex; 2593f85e193739c953358c865005855253af4f68a497John McCall isBlockPointer = true; 2594f85e193739c953358c865005855253af4f68a497John McCall 2595f85e193739c953358c865005855253af4f68a497John McCall // We don't care about pointer structure in return values here. 2596f85e193739c953358c865005855253af4f68a497John McCall goto done; 2597f85e193739c953358c865005855253af4f68a497John McCall 2598f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Array: // suppress if written (id[])? 2599f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Function: 2600f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::MemberPointer: 26014967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: 2602f85e193739c953358c865005855253af4f68a497John McCall return; 2603f85e193739c953358c865005855253af4f68a497John McCall } 2604f85e193739c953358c865005855253af4f68a497John McCall } 2605f85e193739c953358c865005855253af4f68a497John McCall done: 2606f85e193739c953358c865005855253af4f68a497John McCall 2607f85e193739c953358c865005855253af4f68a497John McCall // If we have *one* pointer, then we want to throw the qualifier on 2608f85e193739c953358c865005855253af4f68a497John McCall // the declaration-specifiers, which means that it needs to be a 2609f85e193739c953358c865005855253af4f68a497John McCall // retainable object type. 2610f85e193739c953358c865005855253af4f68a497John McCall if (numPointers == 1) { 2611f85e193739c953358c865005855253af4f68a497John McCall // If it's not a retainable object type, the rule doesn't apply. 2612f85e193739c953358c865005855253af4f68a497John McCall if (!declSpecType->isObjCRetainableType()) return; 2613f85e193739c953358c865005855253af4f68a497John McCall 2614f85e193739c953358c865005855253af4f68a497John McCall // If it already has lifetime, don't do anything. 2615f85e193739c953358c865005855253af4f68a497John McCall if (declSpecType.getObjCLifetime()) return; 2616f85e193739c953358c865005855253af4f68a497John McCall 2617f85e193739c953358c865005855253af4f68a497John McCall // Otherwise, modify the type in-place. 2618f85e193739c953358c865005855253af4f68a497John McCall Qualifiers qs; 261991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 2620f85e193739c953358c865005855253af4f68a497John McCall if (declSpecType->isObjCARCImplicitlyUnretainedType()) 2621f85e193739c953358c865005855253af4f68a497John McCall qs.addObjCLifetime(Qualifiers::OCL_ExplicitNone); 2622f85e193739c953358c865005855253af4f68a497John McCall else 2623f85e193739c953358c865005855253af4f68a497John McCall qs.addObjCLifetime(Qualifiers::OCL_Autoreleasing); 2624f85e193739c953358c865005855253af4f68a497John McCall declSpecType = S.Context.getQualifiedType(declSpecType, qs); 2625f85e193739c953358c865005855253af4f68a497John McCall 2626f85e193739c953358c865005855253af4f68a497John McCall // If we have *two* pointers, then we want to throw the qualifier on 2627f85e193739c953358c865005855253af4f68a497John McCall // the outermost pointer. 2628f85e193739c953358c865005855253af4f68a497John McCall } else if (numPointers == 2) { 2629f85e193739c953358c865005855253af4f68a497John McCall // If we don't have a block pointer, we need to check whether the 2630f85e193739c953358c865005855253af4f68a497John McCall // declaration-specifiers gave us something that will turn into a 2631f85e193739c953358c865005855253af4f68a497John McCall // retainable object pointer after we slap the first pointer on it. 2632f85e193739c953358c865005855253af4f68a497John McCall if (!isBlockPointer && !declSpecType->isObjCObjectType()) 2633f85e193739c953358c865005855253af4f68a497John McCall return; 2634f85e193739c953358c865005855253af4f68a497John McCall 2635f85e193739c953358c865005855253af4f68a497John McCall // Look for an explicit lifetime attribute there. 2636f85e193739c953358c865005855253af4f68a497John McCall DeclaratorChunk &chunk = declarator.getTypeObject(outermostPointerIndex); 26371c73dcbe1f1921bad8311cfb5089d30b4bd75b66Argyrios Kyrtzidis if (chunk.Kind != DeclaratorChunk::Pointer && 26381c73dcbe1f1921bad8311cfb5089d30b4bd75b66Argyrios Kyrtzidis chunk.Kind != DeclaratorChunk::BlockPointer) 26391c73dcbe1f1921bad8311cfb5089d30b4bd75b66Argyrios Kyrtzidis return; 2640f85e193739c953358c865005855253af4f68a497John McCall for (const AttributeList *attr = chunk.getAttrs(); attr; 2641f85e193739c953358c865005855253af4f68a497John McCall attr = attr->getNext()) 26428e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr->getKind() == AttributeList::AT_ObjCOwnership) 2643f85e193739c953358c865005855253af4f68a497John McCall return; 2644f85e193739c953358c865005855253af4f68a497John McCall 2645a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis transferARCOwnershipToDeclaratorChunk(state, Qualifiers::OCL_Autoreleasing, 2646a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis outermostPointerIndex); 2647f85e193739c953358c865005855253af4f68a497John McCall 2648f85e193739c953358c865005855253af4f68a497John McCall // Any other number of pointers/references does not trigger the rule. 2649f85e193739c953358c865005855253af4f68a497John McCall } else return; 2650f85e193739c953358c865005855253af4f68a497John McCall 2651f85e193739c953358c865005855253af4f68a497John McCall // TODO: mark whether we did this inference? 2652f85e193739c953358c865005855253af4f68a497John McCall} 2653f85e193739c953358c865005855253af4f68a497John McCall 2654c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hinesvoid Sema::diagnoseIgnoredQualifiers(unsigned DiagID, unsigned Quals, 2655c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines SourceLocation FallbackLoc, 2656c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines SourceLocation ConstQualLoc, 2657c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines SourceLocation VolatileQualLoc, 2658c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines SourceLocation RestrictQualLoc, 26594967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar SourceLocation AtomicQualLoc, 26604967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar SourceLocation UnalignedQualLoc) { 2661eb82a53aaa7880b7d3fd733aeee38b9aeee919baRichard Smith if (!Quals) 2662eb82a53aaa7880b7d3fd733aeee38b9aeee919baRichard Smith return; 2663eb82a53aaa7880b7d3fd733aeee38b9aeee919baRichard Smith 26648c952cd40ccec9d720931f27e7d722fed207d536Richard Smith struct Qual { 26658c952cd40ccec9d720931f27e7d722fed207d536Richard Smith const char *Name; 266687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar unsigned Mask; 26678c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation Loc; 26684967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } const QualKinds[5] = { 266987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar { "const", DeclSpec::TQ_const, ConstQualLoc }, 267087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar { "volatile", DeclSpec::TQ_volatile, VolatileQualLoc }, 267187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar { "restrict", DeclSpec::TQ_restrict, RestrictQualLoc }, 26724967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar { "__unaligned", DeclSpec::TQ_unaligned, UnalignedQualLoc }, 267387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar { "_Atomic", DeclSpec::TQ_atomic, AtomicQualLoc } 26748c952cd40ccec9d720931f27e7d722fed207d536Richard Smith }; 26758c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 267630d237556fdd29b5075c990da953116225b95d9dRobert Wilhelm SmallString<32> QualStr; 2677d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth unsigned NumQuals = 0; 2678d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth SourceLocation Loc; 26794967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar FixItHint FixIts[5]; 26808c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 26818c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // Build a string naming the redundant qualifiers. 26824967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar for (auto &E : QualKinds) { 26834967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (Quals & E.Mask) { 26848c952cd40ccec9d720931f27e7d722fed207d536Richard Smith if (!QualStr.empty()) QualStr += ' '; 26854967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar QualStr += E.Name; 26868c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 26878c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // If we have a location for the qualifier, offer a fixit. 26884967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar SourceLocation QualLoc = E.Loc; 268987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (QualLoc.isValid()) { 26908c952cd40ccec9d720931f27e7d722fed207d536Richard Smith FixIts[NumQuals] = FixItHint::CreateRemoval(QualLoc); 2691c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines if (Loc.isInvalid() || 2692c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines getSourceManager().isBeforeInTranslationUnit(QualLoc, Loc)) 26938c952cd40ccec9d720931f27e7d722fed207d536Richard Smith Loc = QualLoc; 26948c952cd40ccec9d720931f27e7d722fed207d536Richard Smith } 2695d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 26968c952cd40ccec9d720931f27e7d722fed207d536Richard Smith ++NumQuals; 26978c952cd40ccec9d720931f27e7d722fed207d536Richard Smith } 26988c952cd40ccec9d720931f27e7d722fed207d536Richard Smith } 2699d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 2700c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines Diag(Loc.isInvalid() ? FallbackLoc : Loc, DiagID) 27018c952cd40ccec9d720931f27e7d722fed207d536Richard Smith << QualStr << NumQuals << FixIts[0] << FixIts[1] << FixIts[2] << FixIts[3]; 27028c952cd40ccec9d720931f27e7d722fed207d536Richard Smith} 2703a08fcb8105bf53f3640ad17f61bdcde2d8ace78aHans Wennborg 27048c952cd40ccec9d720931f27e7d722fed207d536Richard Smith// Diagnose pointless type qualifiers on the return type of a function. 2705c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hinesstatic void diagnoseRedundantReturnTypeQualifiers(Sema &S, QualType RetTy, 2706c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines Declarator &D, 2707c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines unsigned FunctionChunkIndex) { 27088c952cd40ccec9d720931f27e7d722fed207d536Richard Smith if (D.getTypeObject(FunctionChunkIndex).Fun.hasTrailingReturnType()) { 27098c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // FIXME: TypeSourceInfo doesn't preserve location information for 27108c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // qualifiers. 2711c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines S.diagnoseIgnoredQualifiers(diag::warn_qual_return_type, 2712c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines RetTy.getLocalCVRQualifiers(), 2713c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines D.getIdentifierLoc()); 27148c952cd40ccec9d720931f27e7d722fed207d536Richard Smith return; 2715d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth } 27168c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 27178c952cd40ccec9d720931f27e7d722fed207d536Richard Smith for (unsigned OuterChunkIndex = FunctionChunkIndex + 1, 27188c952cd40ccec9d720931f27e7d722fed207d536Richard Smith End = D.getNumTypeObjects(); 27198c952cd40ccec9d720931f27e7d722fed207d536Richard Smith OuterChunkIndex != End; ++OuterChunkIndex) { 27208c952cd40ccec9d720931f27e7d722fed207d536Richard Smith DeclaratorChunk &OuterChunk = D.getTypeObject(OuterChunkIndex); 27218c952cd40ccec9d720931f27e7d722fed207d536Richard Smith switch (OuterChunk.Kind) { 27228c952cd40ccec9d720931f27e7d722fed207d536Richard Smith case DeclaratorChunk::Paren: 27238c952cd40ccec9d720931f27e7d722fed207d536Richard Smith continue; 27248c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 27258c952cd40ccec9d720931f27e7d722fed207d536Richard Smith case DeclaratorChunk::Pointer: { 27268c952cd40ccec9d720931f27e7d722fed207d536Richard Smith DeclaratorChunk::PointerTypeInfo &PTI = OuterChunk.Ptr; 2727c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines S.diagnoseIgnoredQualifiers( 2728c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines diag::warn_qual_return_type, 2729c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines PTI.TypeQuals, 27308c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation(), 27318c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation::getFromRawEncoding(PTI.ConstQualLoc), 27328c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation::getFromRawEncoding(PTI.VolatileQualLoc), 27338c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation::getFromRawEncoding(PTI.RestrictQualLoc), 27344967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar SourceLocation::getFromRawEncoding(PTI.AtomicQualLoc), 27354967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar SourceLocation::getFromRawEncoding(PTI.UnalignedQualLoc)); 27368c952cd40ccec9d720931f27e7d722fed207d536Richard Smith return; 27378c952cd40ccec9d720931f27e7d722fed207d536Richard Smith } 27388c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 27398c952cd40ccec9d720931f27e7d722fed207d536Richard Smith case DeclaratorChunk::Function: 27408c952cd40ccec9d720931f27e7d722fed207d536Richard Smith case DeclaratorChunk::BlockPointer: 27418c952cd40ccec9d720931f27e7d722fed207d536Richard Smith case DeclaratorChunk::Reference: 27428c952cd40ccec9d720931f27e7d722fed207d536Richard Smith case DeclaratorChunk::Array: 27438c952cd40ccec9d720931f27e7d722fed207d536Richard Smith case DeclaratorChunk::MemberPointer: 27444967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: 27458c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // FIXME: We can't currently provide an accurate source location and a 27468c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // fix-it hint for these. 2747eb82a53aaa7880b7d3fd733aeee38b9aeee919baRichard Smith unsigned AtomicQual = RetTy->isAtomicType() ? DeclSpec::TQ_atomic : 0; 2748c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines S.diagnoseIgnoredQualifiers(diag::warn_qual_return_type, 2749c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines RetTy.getCVRQualifiers() | AtomicQual, 2750c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines D.getIdentifierLoc()); 27518c952cd40ccec9d720931f27e7d722fed207d536Richard Smith return; 27528c952cd40ccec9d720931f27e7d722fed207d536Richard Smith } 27538c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 27548c952cd40ccec9d720931f27e7d722fed207d536Richard Smith llvm_unreachable("unknown declarator chunk kind"); 27554cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith } 2756d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 27578c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // If the qualifiers come from a conversion function type, don't diagnose 27588c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // them -- they're not necessarily redundant, since such a conversion 27598c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // operator can be explicitly called as "x.operator const int()". 27608c952cd40ccec9d720931f27e7d722fed207d536Richard Smith if (D.getName().getKind() == UnqualifiedId::IK_ConversionFunctionId) 27618c952cd40ccec9d720931f27e7d722fed207d536Richard Smith return; 2762d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 27638c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // Just parens all the way out to the decl specifiers. Diagnose any qualifiers 27648c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // which are present there. 2765c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines S.diagnoseIgnoredQualifiers(diag::warn_qual_return_type, 2766c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines D.getDeclSpec().getTypeQualifiers(), 2767c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines D.getIdentifierLoc(), 2768c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines D.getDeclSpec().getConstSpecLoc(), 2769c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines D.getDeclSpec().getVolatileSpecLoc(), 2770c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines D.getDeclSpec().getRestrictSpecLoc(), 27714967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar D.getDeclSpec().getAtomicSpecLoc(), 27724967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar D.getDeclSpec().getUnalignedSpecLoc()); 2773d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth} 2774d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 27758cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidisstatic QualType GetDeclSpecTypeForDeclarator(TypeProcessingState &state, 27768cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis TypeSourceInfo *&ReturnTypeInfo) { 27778cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Sema &SemaRef = state.getSema(); 27788cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Declarator &D = state.getDeclarator(); 2779930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor QualType T; 27806bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines ReturnTypeInfo = nullptr; 2781711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 27828cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // The TagDecl owned by the DeclSpec. 27836bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines TagDecl *OwnedTagDecl = nullptr; 27848999fe1bc367b3ecc878d135c7b31e3479da56f4Sebastian Redl 27853f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor switch (D.getName().getKind()) { 278698a5403ecf1d2b60ae8cbf43e54194bd762cacaaFariborz Jahanian case UnqualifiedId::IK_ImplicitSelfParam: 27873f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor case UnqualifiedId::IK_OperatorFunctionId: 27888999fe1bc367b3ecc878d135c7b31e3479da56f4Sebastian Redl case UnqualifiedId::IK_Identifier: 27890486d746019f8310589b1f0d92edcc4bb3916b33Sean Hunt case UnqualifiedId::IK_LiteralOperatorId: 27903f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor case UnqualifiedId::IK_TemplateId: 27918cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = ConvertDeclSpecToType(state); 279291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 2793591bd3cb605f1f0229b4b1d8a4b8183377064ec5Douglas Gregor if (!D.isInvalidType() && D.getDeclSpec().isTypeSpecOwned()) { 2794d3880f8458bb6a03818ee01f758c32f945de3eaaArgyrios Kyrtzidis OwnedTagDecl = cast<TagDecl>(D.getDeclSpec().getRepAsDecl()); 279515987970eeaa1842c29ec8797affd1c1dea05585Abramo Bagnara // Owned declaration is embedded in declarator. 2796d3880f8458bb6a03818ee01f758c32f945de3eaaArgyrios Kyrtzidis OwnedTagDecl->setEmbeddedInDeclarator(true); 2797591bd3cb605f1f0229b4b1d8a4b8183377064ec5Douglas Gregor } 2798930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor break; 2799930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 28003f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor case UnqualifiedId::IK_ConstructorName: 28010efc2c1716be4f1c5f1343cad3b047e74861f030Douglas Gregor case UnqualifiedId::IK_ConstructorTemplateId: 28023f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor case UnqualifiedId::IK_DestructorName: 2803930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // Constructors and destructors don't have return types. Use 280491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // "void" instead. 28058cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = SemaRef.Context.VoidTy; 280687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar processTypeAttrs(state, T, TAL_DeclSpec, 280787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getDeclSpec().getAttributes().getList()); 2808930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor break; 280948026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor 281048026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor case UnqualifiedId::IK_ConversionFunctionId: 281148026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor // The result type of a conversion function is the type that it 281248026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor // converts to. 281391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier T = SemaRef.GetTypeFromParser(D.getName().ConversionFunctionId, 28148cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis &ReturnTypeInfo); 281548026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor break; 2816930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 2817dab60ad68a3a98d687305941a3852e793705f945Douglas Gregor 2818711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (D.getAttributes()) 2819711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeTypeAttrsFromDeclarator(state, T); 2820711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 2821d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // C++11 [dcl.spec.auto]p5: reject 'auto' if it is not in an allowed context. 282287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (D.getDeclSpec().containsPlaceholderType()) { 2823baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson int Error = -1; 28241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2825baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson switch (D.getContext()) { 2826f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman case Declarator::LambdaExprContext: 2827f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman llvm_unreachable("Can't specify a type specifier in lambda grammar"); 2828cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCParameterContext: 2829cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCResultContext: 2830baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::PrototypeContext: 2831fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali Error = 0; 2832fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali break; 2833fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali case Declarator::LambdaExprParameterContext: 283487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // In C++14, generic lambdas allow 'auto' in their parameters. 2835176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines if (!(SemaRef.getLangOpts().CPlusPlus14 2836fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali && D.getDeclSpec().getTypeSpecType() == DeclSpec::TST_auto)) 283787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Error = 16; 2838baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 283987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::MemberContext: { 284087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static || 284187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.isFunctionDeclarator()) 28427a614d8380297fcd2bc23986241905d97222948cRichard Smith break; 284387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool Cxx = SemaRef.getLangOpts().CPlusPlus; 28448cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis switch (cast<TagDecl>(SemaRef.CurContext)->getTagKind()) { 2845eb2d1f1c88836bd5382e5d7aa8f6b85148a88b27David Blaikie case TTK_Enum: llvm_unreachable("unhandled tag kind"); 284687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case TTK_Struct: Error = Cxx ? 1 : 2; /* Struct member */ break; 284787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case TTK_Union: Error = Cxx ? 3 : 4; /* Union member */ break; 284887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case TTK_Class: Error = 5; /* Class member */ break; 284987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case TTK_Interface: Error = 6; /* Interface member */ break; 28501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 2851baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 285287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 2853baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::CXXCatchContext: 285417b6399f8461c5b7e1c6f367b0a0dde49f921240Argyrios Kyrtzidis case Declarator::ObjCCatchContext: 285587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Error = 7; // Exception declaration 2856baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 2857baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::TemplateParamContext: 285887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Error = 8; // Template parameter 2859baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 2860baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::BlockLiteralContext: 286187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Error = 9; // Block literal 286234b41d939a1328f484511c6002ba2456db879a29Richard Smith break; 286334b41d939a1328f484511c6002ba2456db879a29Richard Smith case Declarator::TemplateTypeArgContext: 286487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Error = 10; // Template type argument 286534b41d939a1328f484511c6002ba2456db879a29Richard Smith break; 2866162e1c1b487352434552147967c3dd296ebee2f7Richard Smith case Declarator::AliasDeclContext: 28673e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith case Declarator::AliasTemplateContext: 286887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Error = 12; // Type alias 2869162e1c1b487352434552147967c3dd296ebee2f7Richard Smith break; 28707796eb5643244f3134834253ce5ea89107ac21c1Richard Smith case Declarator::TrailingReturnContext: 287187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!SemaRef.getLangOpts().CPlusPlus14 || 287287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getDeclSpec().getTypeSpecType() == DeclSpec::TST_auto_type) 287387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Error = 13; // Function return type 28747796eb5643244f3134834253ce5ea89107ac21c1Richard Smith break; 287514f78f4a11df4c06667e2cbb87eeb179e4cb46feRichard Smith case Declarator::ConversionIdContext: 287687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!SemaRef.getLangOpts().CPlusPlus14 || 287787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getDeclSpec().getTypeSpecType() == DeclSpec::TST_auto_type) 287887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Error = 14; // conversion-type-id 287914f78f4a11df4c06667e2cbb87eeb179e4cb46feRichard Smith break; 288034b41d939a1328f484511c6002ba2456db879a29Richard Smith case Declarator::TypeNameContext: 288187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Error = 15; // Generic 2882baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 2883baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::FileContext: 2884baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::BlockContext: 2885baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::ForContext: 28864967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case Declarator::InitStmtContext: 2887baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::ConditionContext: 288887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 28890b8c98f3ddf83adcb9e9d98b68ce38e970cdee73Argyrios Kyrtzidis case Declarator::CXXNewContext: 289087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (D.getDeclSpec().getTypeSpecType() == DeclSpec::TST_auto_type) 289187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Error = 17; // 'new' type 289287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 289387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::KNRTypeListContext: 289487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Error = 18; // K&R function parameter 2895baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 2896baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson } 2897baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson 2898ddc83f9255834217f0559b09ff75a1c50b8ce457Richard Smith if (D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_typedef) 28996666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 11; 29008110f04b39fd028496dd6bf9e3a78278c3e0a6adRichard Smith 290187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // In Objective-C it is an error to use 'auto' on a function declarator 290287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // (and everywhere for '__auto_type'). 290387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (D.isFunctionDeclarator() && 290487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar (!SemaRef.getLangOpts().CPlusPlus11 || 290587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getDeclSpec().getTypeSpecType() == DeclSpec::TST_auto_type)) 290687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Error = 13; 290787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 290887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool HaveTrailing = false; 290987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 2910d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // C++11 [dcl.spec.auto]p2: 'auto' is always fine if the declarator 2911e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // contains a trailing return type. That is only legal at the outermost 2912e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // level. Check all declarator chunks (outermost first) anyway, to give 2913e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // better diagnostics. 291487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // We don't support '__auto_type' with trailing return types. 291587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (SemaRef.getLangOpts().CPlusPlus11 && 291687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getDeclSpec().getTypeSpecType() != DeclSpec::TST_auto_type) { 2917e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 2918e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith unsigned chunkIndex = e - i - 1; 2919e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith state.setCurrentChunkIndex(chunkIndex); 2920e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith DeclaratorChunk &DeclType = D.getTypeObject(chunkIndex); 2921e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith if (DeclType.Kind == DeclaratorChunk::Function) { 2922e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith const DeclaratorChunk::FunctionTypeInfo &FTI = DeclType.Fun; 292354655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith if (FTI.hasTrailingReturnType()) { 292487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar HaveTrailing = true; 2925e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith Error = -1; 2926e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith break; 2927e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 2928e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 2929e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 2930e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 2931e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith 293214f78f4a11df4c06667e2cbb87eeb179e4cb46feRichard Smith SourceRange AutoRange = D.getDeclSpec().getTypeSpecTypeLoc(); 293314f78f4a11df4c06667e2cbb87eeb179e4cb46feRichard Smith if (D.getName().getKind() == UnqualifiedId::IK_ConversionFunctionId) 293414f78f4a11df4c06667e2cbb87eeb179e4cb46feRichard Smith AutoRange = D.getName().getSourceRange(); 293514f78f4a11df4c06667e2cbb87eeb179e4cb46feRichard Smith 2936baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson if (Error != -1) { 293787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar unsigned Keyword; 293887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar switch (D.getDeclSpec().getTypeSpecType()) { 293987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclSpec::TST_auto: Keyword = 0; break; 294087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclSpec::TST_decltype_auto: Keyword = 1; break; 294187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclSpec::TST_auto_type: Keyword = 2; break; 294287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar default: llvm_unreachable("unknown auto TypeSpecType"); 294387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 294414f78f4a11df4c06667e2cbb87eeb179e4cb46feRichard Smith SemaRef.Diag(AutoRange.getBegin(), diag::err_auto_not_allowed) 294587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << Keyword << Error << AutoRange; 29468cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = SemaRef.Context.IntTy; 2947baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson D.setInvalidType(true); 294887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } else if (!HaveTrailing) { 294987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If there was a trailing return type, we already got 295087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // warn_cxx98_compat_trailing_return_type in the parser. 295114f78f4a11df4c06667e2cbb87eeb179e4cb46feRichard Smith SemaRef.Diag(AutoRange.getBegin(), 295214f78f4a11df4c06667e2cbb87eeb179e4cb46feRichard Smith diag::warn_cxx98_compat_auto_type_specifier) 295314f78f4a11df4c06667e2cbb87eeb179e4cb46feRichard Smith << AutoRange; 295487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 2955baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson } 29568cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 29574e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (SemaRef.getLangOpts().CPlusPlus && 29585e1cdac63c3d9c9b32fa41fa0b2d242a58a20d49John McCall OwnedTagDecl && OwnedTagDecl->isCompleteDefinition()) { 29598cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // Check the contexts where C++ forbids the declaration of a new class 29608cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // or enumeration in a type-specifier-seq. 296187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar unsigned DiagID = 0; 29628cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis switch (D.getContext()) { 29637796eb5643244f3134834253ce5ea89107ac21c1Richard Smith case Declarator::TrailingReturnContext: 29647796eb5643244f3134834253ce5ea89107ac21c1Richard Smith // Class and enumeration definitions are syntactically not allowed in 29657796eb5643244f3134834253ce5ea89107ac21c1Richard Smith // trailing return types. 29667796eb5643244f3134834253ce5ea89107ac21c1Richard Smith llvm_unreachable("parser should not have allowed this"); 29677796eb5643244f3134834253ce5ea89107ac21c1Richard Smith break; 29688cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::FileContext: 29698cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::MemberContext: 29708cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::BlockContext: 29718cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::ForContext: 29724967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case Declarator::InitStmtContext: 29738cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::BlockLiteralContext: 2974f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman case Declarator::LambdaExprContext: 2975d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // C++11 [dcl.type]p3: 29768cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // A type-specifier-seq shall not define a class or enumeration unless 29778cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // it appears in the type-id of an alias-declaration (7.1.3) that is not 29788cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // the declaration of a template-declaration. 29798cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::AliasDeclContext: 29808cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 29818cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::AliasTemplateContext: 298287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DiagID = diag::err_type_defined_in_alias_template; 29838cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 29848cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::TypeNameContext: 298514f78f4a11df4c06667e2cbb87eeb179e4cb46feRichard Smith case Declarator::ConversionIdContext: 29868cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::TemplateParamContext: 29878cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::CXXNewContext: 29888cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::CXXCatchContext: 29898cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::ObjCCatchContext: 29908cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::TemplateTypeArgContext: 299187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DiagID = diag::err_type_defined_in_type_specifier; 29928cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 29938cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::PrototypeContext: 2994fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali case Declarator::LambdaExprParameterContext: 2995cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCParameterContext: 2996cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCResultContext: 29978cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::KNRTypeListContext: 29988cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // C++ [dcl.fct]p6: 29998cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // Types shall not be defined in return or parameter types. 300087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DiagID = diag::err_type_defined_in_param_type; 30018cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 30028cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::ConditionContext: 30038cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // C++ 6.4p2: 30048cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // The type-specifier-seq shall not contain typedef and shall not declare 30058cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // a new class or enumeration. 300687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DiagID = diag::err_type_defined_in_condition; 30078cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 30088cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis } 300987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 301087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (DiagID != 0) { 301187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SemaRef.Diag(OwnedTagDecl->getLocation(), DiagID) 301287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << SemaRef.Context.getTypeDeclType(OwnedTagDecl); 301387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.setInvalidType(true); 301487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 30158cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis } 30168cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 30170e2c34f92f00628d48968dfea096d36381f494cbStephen Hines assert(!T.isNull() && "This function should not return a null type"); 30188cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis return T; 30198cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis} 30208cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 30216bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// Produce an appropriate diagnostic for an ambiguity between a function 3022b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith/// declarator and a C++ direct-initializer. 3023b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smithstatic void warnAboutAmbiguousFunction(Sema &S, Declarator &D, 3024b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith DeclaratorChunk &DeclType, QualType RT) { 3025b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith const DeclaratorChunk::FunctionTypeInfo &FTI = DeclType.Fun; 3026b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith assert(FTI.isAmbiguous && "no direct-initializer / function ambiguity"); 3027b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 3028b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // If the return type is void there is no ambiguity. 3029b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (RT->isVoidType()) 3030b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 3031b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 3032b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // An initializer for a non-class type can have at most one argument. 3033651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (!RT->isRecordType() && FTI.NumParams > 1) 3034b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 3035b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 3036b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // An initializer for a reference must have exactly one argument. 3037651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (RT->isReferenceType() && FTI.NumParams != 1) 3038b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 3039b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 3040b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // Only warn if this declarator is declaring a function at block scope, and 3041b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // doesn't have a storage class (such as 'extern') specified. 3042b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (!D.isFunctionDeclarator() || 3043b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith D.getFunctionDefinitionKind() != FDK_Declaration || 3044b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith !S.CurContext->isFunctionOrMethod() || 3045d2615cc53b916e8aae45783ca7113b93de515ce3Rafael Espindola D.getDeclSpec().getStorageClassSpec() 3046b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith != DeclSpec::SCS_unspecified) 3047b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 3048b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 3049b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // Inside a condition, a direct initializer is not permitted. We allow one to 3050b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // be parsed in order to give better diagnostics in condition parsing. 3051b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (D.getContext() == Declarator::ConditionContext) 3052b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 3053b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 3054b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith SourceRange ParenRange(DeclType.Loc, DeclType.EndLoc); 3055b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 3056d64effc4e31044c05d6e4400150edb26e914983aRichard Smith S.Diag(DeclType.Loc, 3057651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines FTI.NumParams ? diag::warn_parens_disambiguated_as_function_declaration 3058651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines : diag::warn_empty_parens_are_function_decl) 3059651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines << ParenRange; 3060d64effc4e31044c05d6e4400150edb26e914983aRichard Smith 3061d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // If the declaration looks like: 3062d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // T var1, 3063d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // f(); 3064d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // and name lookup finds a function named 'f', then the ',' was 3065d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // probably intended to be a ';'. 3066d64effc4e31044c05d6e4400150edb26e914983aRichard Smith if (!D.isFirstDeclarator() && D.getIdentifier()) { 3067d64effc4e31044c05d6e4400150edb26e914983aRichard Smith FullSourceLoc Comma(D.getCommaLoc(), S.SourceMgr); 3068d64effc4e31044c05d6e4400150edb26e914983aRichard Smith FullSourceLoc Name(D.getIdentifierLoc(), S.SourceMgr); 3069d64effc4e31044c05d6e4400150edb26e914983aRichard Smith if (Comma.getFileID() != Name.getFileID() || 3070d64effc4e31044c05d6e4400150edb26e914983aRichard Smith Comma.getSpellingLineNumber() != Name.getSpellingLineNumber()) { 3071d64effc4e31044c05d6e4400150edb26e914983aRichard Smith LookupResult Result(S, D.getIdentifier(), SourceLocation(), 3072d64effc4e31044c05d6e4400150edb26e914983aRichard Smith Sema::LookupOrdinaryName); 3073d64effc4e31044c05d6e4400150edb26e914983aRichard Smith if (S.LookupName(Result, S.getCurScope())) 3074d64effc4e31044c05d6e4400150edb26e914983aRichard Smith S.Diag(D.getCommaLoc(), diag::note_empty_parens_function_call) 3075d64effc4e31044c05d6e4400150edb26e914983aRichard Smith << FixItHint::CreateReplacement(D.getCommaLoc(), ";") 3076d64effc4e31044c05d6e4400150edb26e914983aRichard Smith << D.getIdentifier(); 3077d64effc4e31044c05d6e4400150edb26e914983aRichard Smith } 3078d64effc4e31044c05d6e4400150edb26e914983aRichard Smith } 3079b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 3080651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (FTI.NumParams > 0) { 3081c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines // For a declaration with parameters, eg. "T var(T());", suggest adding 3082c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines // parens around the first parameter to turn the declaration into a 3083c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines // variable declaration. 3084651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines SourceRange Range = FTI.Params[0].Param->getSourceRange(); 3085b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith SourceLocation B = Range.getBegin(); 30866bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines SourceLocation E = S.getLocForEndOfToken(Range.getEnd()); 3087b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // FIXME: Maybe we should suggest adding braces instead of parens 3088b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // in C++11 for classes that don't have an initializer_list constructor. 3089b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith S.Diag(B, diag::note_additional_parens_for_variable_declaration) 3090b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith << FixItHint::CreateInsertion(B, "(") 3091b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith << FixItHint::CreateInsertion(E, ")"); 3092d64effc4e31044c05d6e4400150edb26e914983aRichard Smith } else { 3093c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines // For a declaration without parameters, eg. "T var();", suggest replacing 3094c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines // the parens with an initializer to turn the declaration into a variable 3095d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // declaration. 3096b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith const CXXRecordDecl *RD = RT->getAsCXXRecordDecl(); 3097d64effc4e31044c05d6e4400150edb26e914983aRichard Smith 3098b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // Empty parens mean value-initialization, and no parens mean 3099b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // default initialization. These are equivalent if the default 3100b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // constructor is user-provided or if zero-initialization is a 3101b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // no-op. 3102b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (RD && RD->hasDefinition() && 3103b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith (RD->isEmpty() || RD->hasUserProvidedDefaultConstructor())) 3104b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith S.Diag(DeclType.Loc, diag::note_empty_parens_default_ctor) 3105b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith << FixItHint::CreateRemoval(ParenRange); 3106b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith else { 31078adf837adc65b55a3f74643c02c1ee077dc26f06Richard Smith std::string Init = 31088adf837adc65b55a3f74643c02c1ee077dc26f06Richard Smith S.getFixItZeroInitializerForType(RT, ParenRange.getBegin()); 310980ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith if (Init.empty() && S.LangOpts.CPlusPlus11) 3110b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith Init = "{}"; 3111b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (!Init.empty()) 3112b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith S.Diag(DeclType.Loc, diag::note_empty_parens_zero_initialize) 3113b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith << FixItHint::CreateReplacement(ParenRange, Init); 3114b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith } 3115b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith } 3116b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith} 3117b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 3118ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner/// Helper for figuring out the default CC for a function declarator type. If 3119ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner/// this is the outermost chunk, then we can determine the CC from the 3120ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner/// declarator context. If not, then this could be either a member function 3121ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner/// type or normal function type. 3122ef072033876e295ec5d3402f8730a3ae358ad815Reid Klecknerstatic CallingConv 3123ef072033876e295ec5d3402f8730a3ae358ad815Reid KlecknergetCCForDeclaratorChunk(Sema &S, Declarator &D, 3124ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner const DeclaratorChunk::FunctionTypeInfo &FTI, 3125ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner unsigned ChunkIndex) { 3126ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner assert(D.getTypeObject(ChunkIndex).Kind == DeclaratorChunk::Function); 3127ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner 31284967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Check for an explicit CC attribute. 31294967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar for (auto Attr = FTI.AttrList; Attr; Attr = Attr->getNext()) { 31304967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar switch (Attr->getKind()) { 31314967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar CALLING_CONV_ATTRS_CASELIST: { 31324967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Ignore attributes that don't validate or can't apply to the 31334967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // function type. We'll diagnose the failure to apply them in 31344967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // handleFunctionTypeAttr. 31354967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar CallingConv CC; 31364967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (!S.CheckCallingConvAttr(*Attr, CC) && 31374967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar (!FTI.isVariadic || supportsVariadicCall(CC))) { 31384967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return CC; 31394967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 31404967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar break; 31414967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 31424967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 31434967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar default: 31444967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar break; 31454967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 31464967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 31474967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 3148ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner bool IsCXXInstanceMethod = false; 3149ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner 3150ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner if (S.getLangOpts().CPlusPlus) { 3151ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner // Look inwards through parentheses to see if this chunk will form a 3152ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner // member pointer type or if we're the declarator. Any type attributes 3153ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner // between here and there will override the CC we choose here. 3154ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner unsigned I = ChunkIndex; 3155ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner bool FoundNonParen = false; 3156ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner while (I && !FoundNonParen) { 3157ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner --I; 3158ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner if (D.getTypeObject(I).Kind != DeclaratorChunk::Paren) 3159ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner FoundNonParen = true; 3160ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner } 3161ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner 3162ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner if (FoundNonParen) { 3163ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner // If we're not the declarator, we're a regular function type unless we're 3164ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner // in a member pointer. 3165ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner IsCXXInstanceMethod = 3166ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner D.getTypeObject(I).Kind == DeclaratorChunk::MemberPointer; 316758878f85ab89b13e9eea4af3ccf055e42c557bc8Pirama Arumuga Nainar } else if (D.getContext() == Declarator::LambdaExprContext) { 316858878f85ab89b13e9eea4af3ccf055e42c557bc8Pirama Arumuga Nainar // This can only be a call operator for a lambda, which is an instance 316958878f85ab89b13e9eea4af3ccf055e42c557bc8Pirama Arumuga Nainar // method. 317058878f85ab89b13e9eea4af3ccf055e42c557bc8Pirama Arumuga Nainar IsCXXInstanceMethod = true; 3171ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner } else { 3172ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner // We're the innermost decl chunk, so must be a function declarator. 3173ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner assert(D.isFunctionDeclarator()); 3174ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner 3175ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner // If we're inside a record, we're declaring a method, but it could be 3176d1a32c328bce903fb1b17fc8147b646be818298eReid Kleckner // explicitly or implicitly static. 3177ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner IsCXXInstanceMethod = 3178d1a32c328bce903fb1b17fc8147b646be818298eReid Kleckner D.isFirstDeclarationOfMember() && 3179d1a32c328bce903fb1b17fc8147b646be818298eReid Kleckner D.getDeclSpec().getStorageClassSpec() != DeclSpec::SCS_typedef && 3180d1a32c328bce903fb1b17fc8147b646be818298eReid Kleckner !D.isStaticMember(); 3181ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner } 3182ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner } 3183ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner 31840e2c34f92f00628d48968dfea096d36381f494cbStephen Hines CallingConv CC = S.Context.getDefaultCallingConvention(FTI.isVariadic, 31850e2c34f92f00628d48968dfea096d36381f494cbStephen Hines IsCXXInstanceMethod); 31860e2c34f92f00628d48968dfea096d36381f494cbStephen Hines 31874967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Attribute AT_OpenCLKernel affects the calling convention for SPIR 31884967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // and AMDGPU targets, hence it cannot be treated as a calling 31890e2c34f92f00628d48968dfea096d36381f494cbStephen Hines // convention attribute. This is the simplest place to infer 31904967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // calling convention for OpenCL kernels. 31914967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (S.getLangOpts().OpenCL) { 31920e2c34f92f00628d48968dfea096d36381f494cbStephen Hines for (const AttributeList *Attr = D.getDeclSpec().getAttributes().getList(); 31930e2c34f92f00628d48968dfea096d36381f494cbStephen Hines Attr; Attr = Attr->getNext()) { 31940e2c34f92f00628d48968dfea096d36381f494cbStephen Hines if (Attr->getKind() == AttributeList::AT_OpenCLKernel) { 31954967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar llvm::Triple::ArchType arch = S.Context.getTargetInfo().getTriple().getArch(); 31964967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (arch == llvm::Triple::spir || arch == llvm::Triple::spir64 || 31974967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar arch == llvm::Triple::amdgcn) { 31984967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar CC = CC_OpenCLKernel; 31994967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 32000e2c34f92f00628d48968dfea096d36381f494cbStephen Hines break; 32010e2c34f92f00628d48968dfea096d36381f494cbStephen Hines } 32020e2c34f92f00628d48968dfea096d36381f494cbStephen Hines } 32030e2c34f92f00628d48968dfea096d36381f494cbStephen Hines } 32040e2c34f92f00628d48968dfea096d36381f494cbStephen Hines 32050e2c34f92f00628d48968dfea096d36381f494cbStephen Hines return CC; 3206ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner} 3207ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner 320887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarnamespace { 320987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /// A simple notion of pointer kinds, which matches up with the various 321087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /// pointer declarators. 321187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar enum class SimplePointerKind { 321287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Pointer, 321387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar BlockPointer, 321487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar MemberPointer, 321587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar }; 32164967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar} // end anonymous namespace 321787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 321887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga NainarIdentifierInfo *Sema::getNullabilityKeyword(NullabilityKind nullability) { 321987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar switch (nullability) { 322087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case NullabilityKind::NonNull: 322187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!Ident__Nonnull) 322287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Ident__Nonnull = PP.getIdentifierInfo("_Nonnull"); 322387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return Ident__Nonnull; 322487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 322587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case NullabilityKind::Nullable: 322687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!Ident__Nullable) 322787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Ident__Nullable = PP.getIdentifierInfo("_Nullable"); 322887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return Ident__Nullable; 322987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 323087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case NullabilityKind::Unspecified: 323187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!Ident__Null_unspecified) 323287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Ident__Null_unspecified = PP.getIdentifierInfo("_Null_unspecified"); 323387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return Ident__Null_unspecified; 323487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 323587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar llvm_unreachable("Unknown nullability kind."); 323687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 323787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 323887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// Retrieve the identifier "NSError". 323987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga NainarIdentifierInfo *Sema::getNSErrorIdent() { 324087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!Ident_NSError) 324187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Ident_NSError = PP.getIdentifierInfo("NSError"); 324287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 324387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return Ident_NSError; 324487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 324587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 324687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// Check whether there is a nullability attribute of any kind in the given 324787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// attribute list. 324887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarstatic bool hasNullabilityAttr(const AttributeList *attrs) { 324987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar for (const AttributeList *attr = attrs; attr; 325087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar attr = attr->getNext()) { 325187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (attr->getKind() == AttributeList::AT_TypeNonNull || 325287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar attr->getKind() == AttributeList::AT_TypeNullable || 325387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar attr->getKind() == AttributeList::AT_TypeNullUnspecified) 325487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return true; 325587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 325687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 325787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return false; 325887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 325987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 326087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarnamespace { 326187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /// Describes the kind of a pointer a declarator describes. 326287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar enum class PointerDeclaratorKind { 326387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Not a pointer. 326487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar NonPointer, 326587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Single-level pointer. 326687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SingleLevelPointer, 326787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Multi-level pointer (of any pointer kind). 326887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar MultiLevelPointer, 326987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // CFFooRef* 327087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar MaybePointerToCFRef, 327187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // CFErrorRef* 327287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar CFErrorRefPointer, 327387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // NSError** 327487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar NSErrorPointerPointer, 327587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar }; 32764967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar} // end anonymous namespace 327787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 327887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// Classify the given declarator, whose type-specified is \c type, based on 327987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// what kind of pointer it refers to. 328087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// 328187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// This is used to determine the default nullability. 328287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarstatic PointerDeclaratorKind classifyPointerDeclarator(Sema &S, 328387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar QualType type, 328487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Declarator &declarator) { 328587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar unsigned numNormalPointers = 0; 328687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 328787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // For any dependent type, we consider it a non-pointer. 328887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (type->isDependentType()) 328987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return PointerDeclaratorKind::NonPointer; 329087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 329187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Look through the declarator chunks to identify pointers. 329287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar for (unsigned i = 0, n = declarator.getNumTypeObjects(); i != n; ++i) { 329387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DeclaratorChunk &chunk = declarator.getTypeObject(i); 329487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar switch (chunk.Kind) { 329587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Array: 329687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Function: 32974967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: 329887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 329987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 330087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::BlockPointer: 330187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::MemberPointer: 330287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return numNormalPointers > 0 ? PointerDeclaratorKind::MultiLevelPointer 330387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar : PointerDeclaratorKind::SingleLevelPointer; 330487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 330587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Paren: 330687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Reference: 330787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 330887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 330987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Pointer: 331087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ++numNormalPointers; 331187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (numNormalPointers > 2) 331287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return PointerDeclaratorKind::MultiLevelPointer; 331387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 331487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 331587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 331687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 331787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Then, dig into the type specifier itself. 331887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar unsigned numTypeSpecifierPointers = 0; 331987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar do { 332087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Decompose normal pointers. 332187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto ptrType = type->getAs<PointerType>()) { 332287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ++numNormalPointers; 332387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 332487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (numNormalPointers > 2) 332587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return PointerDeclaratorKind::MultiLevelPointer; 332687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 332787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type = ptrType->getPointeeType(); 332887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ++numTypeSpecifierPointers; 332987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 333087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 333187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 333287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Decompose block pointers. 333387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (type->getAs<BlockPointerType>()) { 333487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return numNormalPointers > 0 ? PointerDeclaratorKind::MultiLevelPointer 333587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar : PointerDeclaratorKind::SingleLevelPointer; 333687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 333787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 333887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Decompose member pointers. 333987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (type->getAs<MemberPointerType>()) { 334087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return numNormalPointers > 0 ? PointerDeclaratorKind::MultiLevelPointer 334187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar : PointerDeclaratorKind::SingleLevelPointer; 334287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 334387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 334487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Look at Objective-C object pointers. 334587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto objcObjectPtr = type->getAs<ObjCObjectPointerType>()) { 334687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ++numNormalPointers; 334787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ++numTypeSpecifierPointers; 334887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 334987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If this is NSError**, report that. 335087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto objcClassDecl = objcObjectPtr->getInterfaceDecl()) { 335187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (objcClassDecl->getIdentifier() == S.getNSErrorIdent() && 335287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar numNormalPointers == 2 && numTypeSpecifierPointers < 2) { 335387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return PointerDeclaratorKind::NSErrorPointerPointer; 335487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 335587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 335687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 335787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 335887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 335987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 336087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Look at Objective-C class types. 336187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto objcClass = type->getAs<ObjCInterfaceType>()) { 336287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (objcClass->getInterface()->getIdentifier() == S.getNSErrorIdent()) { 336387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (numNormalPointers == 2 && numTypeSpecifierPointers < 2) 336487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return PointerDeclaratorKind::NSErrorPointerPointer;; 336587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 336687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 336787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 336887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 336987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 337087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If at this point we haven't seen a pointer, we won't see one. 337187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (numNormalPointers == 0) 337287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return PointerDeclaratorKind::NonPointer; 337387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 337487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto recordType = type->getAs<RecordType>()) { 337587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar RecordDecl *recordDecl = recordType->getDecl(); 337687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 337787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool isCFError = false; 337887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (S.CFError) { 337987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If we already know about CFError, test it directly. 338087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar isCFError = (S.CFError == recordDecl); 338187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } else { 338287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Check whether this is CFError, which we identify based on its bridge 338387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // to NSError. 338487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (recordDecl->getTagKind() == TTK_Struct && numNormalPointers > 0) { 338587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto bridgeAttr = recordDecl->getAttr<ObjCBridgeAttr>()) { 338687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (bridgeAttr->getBridgedType() == S.getNSErrorIdent()) { 338787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.CFError = recordDecl; 338887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar isCFError = true; 338987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 339087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 339187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 339287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 339387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 339487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If this is CFErrorRef*, report it as such. 339587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (isCFError && numNormalPointers == 2 && numTypeSpecifierPointers < 2) { 339687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return PointerDeclaratorKind::CFErrorRefPointer; 339787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 339887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 339987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 340087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 340187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 340287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } while (true); 340387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 340487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar switch (numNormalPointers) { 340587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case 0: 340687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return PointerDeclaratorKind::NonPointer; 340787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 340887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case 1: 340987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return PointerDeclaratorKind::SingleLevelPointer; 341087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 341187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case 2: 341287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return PointerDeclaratorKind::MaybePointerToCFRef; 341387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 341487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar default: 341587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return PointerDeclaratorKind::MultiLevelPointer; 341687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 341787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 341887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 341987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarstatic FileID getNullabilityCompletenessCheckFileID(Sema &S, 342087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation loc) { 342187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If we're anywhere in a function, method, or closure context, don't perform 342287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // completeness checks. 342387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar for (DeclContext *ctx = S.CurContext; ctx; ctx = ctx->getParent()) { 342487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (ctx->isFunctionOrMethod()) 342587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return FileID(); 342687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 342787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (ctx->isFileContext()) 342887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 342987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 343087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 343187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // We only care about the expansion location. 343287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar loc = S.SourceMgr.getExpansionLoc(loc); 343387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar FileID file = S.SourceMgr.getFileID(loc); 343487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (file.isInvalid()) 343587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return FileID(); 343687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 343787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Retrieve file information. 343887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool invalid = false; 343987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar const SrcMgr::SLocEntry &sloc = S.SourceMgr.getSLocEntry(file, &invalid); 344087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (invalid || !sloc.isFile()) 344187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return FileID(); 344287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 344387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // We don't want to perform completeness checks on the main file or in 344487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // system headers. 344587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar const SrcMgr::FileInfo &fileInfo = sloc.getFile(); 344687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (fileInfo.getIncludeLoc().isInvalid()) 344787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return FileID(); 344887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (fileInfo.getFileCharacteristic() != SrcMgr::C_User && 344987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diags.getSuppressSystemWarnings()) { 345087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return FileID(); 345187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 345287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 345387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return file; 345487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 345587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 345687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// Check for consistent use of nullability. 345787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarstatic void checkNullabilityConsistency(TypeProcessingState &state, 345887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SimplePointerKind pointerKind, 345987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation pointerLoc) { 346087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Sema &S = state.getSema(); 346187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 346287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Determine which file we're performing consistency checking for. 346387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar FileID file = getNullabilityCompletenessCheckFileID(S, pointerLoc); 346487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (file.isInvalid()) 346587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return; 346687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 346787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If we haven't seen any type nullability in this file, we won't warn now 346887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // about anything. 346987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar FileNullability &fileNullability = S.NullabilityMap[file]; 347087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!fileNullability.SawTypeNullability) { 347187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If this is the first pointer declarator in the file, record it. 347287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (fileNullability.PointerLoc.isInvalid() && 347387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar !S.Context.getDiagnostics().isIgnored(diag::warn_nullability_missing, 347487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar pointerLoc)) { 347587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar fileNullability.PointerLoc = pointerLoc; 347687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar fileNullability.PointerKind = static_cast<unsigned>(pointerKind); 347787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 347887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 347987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return; 348087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 348187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 348287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Complain about missing nullability. 348387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(pointerLoc, diag::warn_nullability_missing) 348487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << static_cast<unsigned>(pointerKind); 348587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 348687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 34878cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidisstatic TypeSourceInfo *GetFullTypeForDeclarator(TypeProcessingState &state, 34888cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis QualType declSpecType, 34898cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis TypeSourceInfo *TInfo) { 34900e2c34f92f00628d48968dfea096d36381f494cbStephen Hines // The TypeSourceInfo that this function returns will not be a null type. 34910e2c34f92f00628d48968dfea096d36381f494cbStephen Hines // If there is an error, this function will fill in a dummy type as fallback. 34928cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis QualType T = declSpecType; 34938cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Declarator &D = state.getDeclarator(); 34948cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Sema &S = state.getSema(); 34958cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis ASTContext &Context = S.Context; 34964e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie const LangOptions &LangOpts = S.getLangOpts(); 34978cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 3498cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // The name we're declaring, if any. 3499cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor DeclarationName Name; 3500cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (D.getIdentifier()) 3501cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Name = D.getIdentifier(); 35021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 350387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Does this declaration declare a typedef-name? 350487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool IsTypedefName = 350587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_typedef || 350687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getContext() == Declarator::AliasDeclContext || 350787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getContext() == Declarator::AliasTemplateContext; 350887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 350987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Does T refer to a function type with a cv-qualifier or a ref-qualifier? 351087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool IsQualifiedFunction = T->isFunctionProtoType() && 351187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar (T->castAs<FunctionProtoType>()->getTypeQuals() != 0 || 351287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar T->castAs<FunctionProtoType>()->getRefQualifier() != RQ_None); 351387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 351487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If T is 'decltype(auto)', the only declarators we can have are parens 351587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // and at most one function declarator if this is a function declaration. 351687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (const AutoType *AT = T->getAs<AutoType>()) { 351787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (AT->isDecltypeAuto()) { 351887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar for (unsigned I = 0, E = D.getNumTypeObjects(); I != E; ++I) { 351987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar unsigned Index = E - I - 1; 352087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DeclaratorChunk &DeclChunk = D.getTypeObject(Index); 352187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar unsigned DiagId = diag::err_decltype_auto_compound_type; 352287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar unsigned DiagKind = 0; 352387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar switch (DeclChunk.Kind) { 352487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Paren: 352587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 352687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Function: { 352787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar unsigned FnIndex; 352887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (D.isFunctionDeclarationContext() && 352987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.isFunctionDeclarator(FnIndex) && FnIndex == Index) 353087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 353187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DiagId = diag::err_decltype_auto_function_declarator_not_declaration; 353287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 353387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 353487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Pointer: 353587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::BlockPointer: 353687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::MemberPointer: 353787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DiagKind = 0; 353887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 353987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Reference: 354087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DiagKind = 1; 354187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 354287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Array: 354387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DiagKind = 2; 354487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 35454967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: 35464967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar break; 354787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 354887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 354987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(DeclChunk.Loc, DiagId) << DiagKind; 355087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.setInvalidType(true); 355187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 355287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 355387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 355487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 355587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 355687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Determine whether we should infer _Nonnull on pointer types. 355787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Optional<NullabilityKind> inferNullability; 355887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool inferNullabilityCS = false; 355987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool inferNullabilityInnerOnly = false; 356087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool inferNullabilityInnerOnlyComplete = false; 356187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 356287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Are we in an assume-nonnull region? 356387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool inAssumeNonNullRegion = false; 356487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (S.PP.getPragmaAssumeNonNullLoc().isValid()) { 356587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar inAssumeNonNullRegion = true; 356687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Determine which file we saw the assume-nonnull region in. 356787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar FileID file = getNullabilityCompletenessCheckFileID( 356887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S, S.PP.getPragmaAssumeNonNullLoc()); 356987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (file.isValid()) { 357087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar FileNullability &fileNullability = S.NullabilityMap[file]; 357187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 357287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If we haven't seen any type nullability before, now we have. 357387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!fileNullability.SawTypeNullability) { 357487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (fileNullability.PointerLoc.isValid()) { 357587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(fileNullability.PointerLoc, diag::warn_nullability_missing) 357687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << static_cast<unsigned>(fileNullability.PointerKind); 357787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 357887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 357987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar fileNullability.SawTypeNullability = true; 358087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 358187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 358287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 358387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 358487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Whether to complain about missing nullability specifiers or not. 358587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar enum { 358687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /// Never complain. 358787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar CAMN_No, 358887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /// Complain on the inner pointers (but not the outermost 358987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /// pointer). 359087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar CAMN_InnerPointers, 359187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /// Complain about any pointers that don't have nullability 359287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /// specified or inferred. 359387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar CAMN_Yes 359487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } complainAboutMissingNullability = CAMN_No; 359587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar unsigned NumPointersRemaining = 0; 359687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 359787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (IsTypedefName) { 359887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // For typedefs, we do not infer any nullability (the default), 359987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // and we only complain about missing nullability specifiers on 360087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // inner pointers. 360187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar complainAboutMissingNullability = CAMN_InnerPointers; 360287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 360387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (T->canHaveNullability() && !T->getNullability(S.Context)) { 360487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ++NumPointersRemaining; 360587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 360687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 360787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar for (unsigned i = 0, n = D.getNumTypeObjects(); i != n; ++i) { 360887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DeclaratorChunk &chunk = D.getTypeObject(i); 360987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar switch (chunk.Kind) { 361087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Array: 361187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Function: 36124967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: 361387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 361487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 361587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::BlockPointer: 361687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::MemberPointer: 361787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ++NumPointersRemaining; 361887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 361987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 362087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Paren: 362187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Reference: 362287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 362387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 362487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Pointer: 362587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ++NumPointersRemaining; 362687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 362787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 362887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 362987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } else { 363087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool isFunctionOrMethod = false; 363187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar switch (auto context = state.getDeclarator().getContext()) { 363287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::ObjCParameterContext: 363387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::ObjCResultContext: 363487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::PrototypeContext: 363587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::TrailingReturnContext: 363687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar isFunctionOrMethod = true; 363787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // fallthrough 363887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 363987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::MemberContext: 364087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (state.getDeclarator().isObjCIvar() && !isFunctionOrMethod) { 364187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar complainAboutMissingNullability = CAMN_No; 364287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 364387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 364487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 364587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Weak properties are inferred to be nullable. 364687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (state.getDeclarator().isObjCWeakProperty() && inAssumeNonNullRegion) { 364787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar inferNullability = NullabilityKind::Nullable; 364887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 364987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 365087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 365187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // fallthrough 365287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 365387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::FileContext: 365487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::KNRTypeListContext: 365587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar complainAboutMissingNullability = CAMN_Yes; 365687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 365787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Nullability inference depends on the type and declarator. 365887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar switch (classifyPointerDeclarator(S, T, D)) { 365987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case PointerDeclaratorKind::NonPointer: 366087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case PointerDeclaratorKind::MultiLevelPointer: 366187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Cannot infer nullability. 366287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 366387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 366487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case PointerDeclaratorKind::SingleLevelPointer: 366587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Infer _Nonnull if we are in an assumes-nonnull region. 366687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (inAssumeNonNullRegion) { 366787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar inferNullability = NullabilityKind::NonNull; 366887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar inferNullabilityCS = (context == Declarator::ObjCParameterContext || 366987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar context == Declarator::ObjCResultContext); 367087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 367187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 367287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 367387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case PointerDeclaratorKind::CFErrorRefPointer: 367487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case PointerDeclaratorKind::NSErrorPointerPointer: 367587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Within a function or method signature, infer _Nullable at both 367687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // levels. 367787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (isFunctionOrMethod && inAssumeNonNullRegion) 367887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar inferNullability = NullabilityKind::Nullable; 367987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 368087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 368187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case PointerDeclaratorKind::MaybePointerToCFRef: 368287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (isFunctionOrMethod) { 368387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // On pointer-to-pointer parameters marked cf_returns_retained or 368487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // cf_returns_not_retained, if the outer pointer is explicit then 368587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // infer the inner pointer as _Nullable. 368687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar auto hasCFReturnsAttr = [](const AttributeList *NextAttr) -> bool { 368787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar while (NextAttr) { 368887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (NextAttr->getKind() == AttributeList::AT_CFReturnsRetained || 368987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar NextAttr->getKind() == AttributeList::AT_CFReturnsNotRetained) 369087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return true; 369187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar NextAttr = NextAttr->getNext(); 369287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 369387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return false; 369487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar }; 369587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (const auto *InnermostChunk = D.getInnermostNonParenChunk()) { 369687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (hasCFReturnsAttr(D.getAttributes()) || 369787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar hasCFReturnsAttr(InnermostChunk->getAttrs()) || 369887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar hasCFReturnsAttr(D.getDeclSpec().getAttributes().getList())) { 369987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar inferNullability = NullabilityKind::Nullable; 370087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar inferNullabilityInnerOnly = true; 370187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 370287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 370387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 370487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 370587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 370687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 370787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 370887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::ConversionIdContext: 370987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar complainAboutMissingNullability = CAMN_Yes; 371087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 371187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 371287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::AliasDeclContext: 371387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::AliasTemplateContext: 371487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::BlockContext: 371587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::BlockLiteralContext: 371687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::ConditionContext: 371787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::CXXCatchContext: 371887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::CXXNewContext: 371987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::ForContext: 37204967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case Declarator::InitStmtContext: 372187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::LambdaExprContext: 372287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::LambdaExprParameterContext: 372387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::ObjCCatchContext: 372487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::TemplateParamContext: 372587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::TemplateTypeArgContext: 372687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case Declarator::TypeNameContext: 372787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Don't infer in these contexts. 372887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 372987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 373087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 373187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 373287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Local function that checks the nullability for a given pointer declarator. 373387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Returns true if _Nonnull was inferred. 373487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar auto inferPointerNullability = [&](SimplePointerKind pointerKind, 373587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation pointerLoc, 373687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar AttributeList *&attrs) -> AttributeList * { 373787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // We've seen a pointer. 373887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (NumPointersRemaining > 0) 373987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar --NumPointersRemaining; 374087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 374187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If a nullability attribute is present, there's nothing to do. 374287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (hasNullabilityAttr(attrs)) 374387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return nullptr; 374487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 374587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If we're supposed to infer nullability, do so now. 374687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (inferNullability && !inferNullabilityInnerOnlyComplete) { 374787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar AttributeList::Syntax syntax 374887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar = inferNullabilityCS ? AttributeList::AS_ContextSensitiveKeyword 374987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar : AttributeList::AS_Keyword; 375087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar AttributeList *nullabilityAttr = state.getDeclarator().getAttributePool() 375187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar .create( 375287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.getNullabilityKeyword( 375387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar *inferNullability), 375487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceRange(pointerLoc), 375587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar nullptr, SourceLocation(), 375687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar nullptr, 0, syntax); 375787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 375887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar spliceAttrIntoList(*nullabilityAttr, attrs); 375987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 376087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (inferNullabilityCS) { 376187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar state.getDeclarator().getMutableDeclSpec().getObjCQualifiers() 376287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar ->setObjCDeclQualifier(ObjCDeclSpec::DQ_CSNullability); 376387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 3764162e1c1b487352434552147967c3dd296ebee2f7Richard Smith 376587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (inferNullabilityInnerOnly) 376687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar inferNullabilityInnerOnlyComplete = true; 376787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return nullabilityAttr; 376887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 3769d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 377087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If we're supposed to complain about missing nullability, do so 377187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // now if it's truly missing. 377287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar switch (complainAboutMissingNullability) { 377387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case CAMN_No: 377487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 3775a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith 377687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case CAMN_InnerPointers: 377787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (NumPointersRemaining == 0) 3778a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith break; 377987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Fallthrough. 378087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 378187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case CAMN_Yes: 378287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar checkNullabilityConsistency(state, pointerKind, pointerLoc); 378387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 378487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return nullptr; 378587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar }; 378687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 378787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If the type itself could have nullability but does not, infer pointer 378887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // nullability and perform consistency checking. 378987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (T->canHaveNullability() && S.ActiveTemplateInstantiations.empty() && 379087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar !T->getNullability(S.Context)) { 379187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SimplePointerKind pointerKind = SimplePointerKind::Pointer; 379287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (T->isBlockPointerType()) 379387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar pointerKind = SimplePointerKind::BlockPointer; 379487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar else if (T->isMemberPointerType()) 379587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar pointerKind = SimplePointerKind::MemberPointer; 379687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 379787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto *attr = inferPointerNullability( 379887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar pointerKind, D.getDeclSpec().getTypeSpecTypeLoc(), 379987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getMutableDeclSpec().getAttributes().getListRef())) { 380087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar T = Context.getAttributedType( 380187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar AttributedType::getNullabilityAttrKind(*inferNullability), T, T); 380287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar attr->setUsedAsTypeAttr(); 3803a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith } 3804a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith } 3805a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith 380698eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump // Walk the DeclTypeInfo, building the recursive type as we go. 380798eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump // DeclTypeInfos are ordered from the identifier out, which is 380898eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump // opposite of what we want :). 38098ce35b095e8fca45e04c1bda14ed0548ce7536adSebastian Redl for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 3810711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned chunkIndex = e - i - 1; 3811711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.setCurrentChunkIndex(chunkIndex); 3812711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &DeclType = D.getTypeObject(chunkIndex); 38136bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines IsQualifiedFunction &= DeclType.Kind == DeclaratorChunk::Paren; 38145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DeclType.Kind) { 3815075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara case DeclaratorChunk::Paren: 38168cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildParenType(T); 3817075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara break; 38185618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff case DeclaratorChunk::BlockPointer: 38199af5500f3f132f9a2f9abbe82113a7c7bb751472Chris Lattner // If blocks are disabled, emit an error. 38209af5500f3f132f9a2f9abbe82113a7c7bb751472Chris Lattner if (!LangOpts.Blocks) 38214967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(DeclType.Loc, diag::err_blocks_disable) << LangOpts.OpenCL; 38221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 382387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Handle pointer nullability. 382487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar inferPointerNullability(SimplePointerKind::BlockPointer, 382587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DeclType.Loc, DeclType.getAttrListRef()); 382687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 38278cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildBlockPointerType(T, D.getIdentifierLoc(), Name); 38284967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (DeclType.Cls.TypeQuals || LangOpts.OpenCL) { 38294967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // OpenCL v2.0, s6.12.5 - Block variable declarations are implicitly 38304967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // qualified with const. 38314967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (LangOpts.OpenCL) 38324967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar DeclType.Cls.TypeQuals |= DeclSpec::TQ_const; 38338cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, DeclType.Cls.TypeQuals); 38344967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 38355618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff break; 38365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclaratorChunk::Pointer: 38376a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Verify that we're not building a pointer to pointer to function with 38386a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // exception specification. 38398cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.CPlusPlus && S.CheckDistantExceptionSpec(T)) { 38408cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getIdentifierLoc(), diag::err_distant_exception_spec); 38416a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl D.setInvalidType(true); 38426a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Build the type anyway. 38436a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl } 384487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 384587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Handle pointer nullability 384687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar inferPointerNullability(SimplePointerKind::Pointer, DeclType.Loc, 384787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DeclType.getAttrListRef()); 384887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 38498cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.ObjC1 && T->getAs<ObjCObjectType>()) { 3850c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall T = Context.getObjCObjectPointerType(T); 38512865474261a608c7873b87ba4af110d17907896dJohn McCall if (DeclType.Ptr.TypeQuals) 38528cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, DeclType.Ptr.TypeQuals); 385314108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff break; 385414108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 38554967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 38564967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // OpenCL v2.0 s6.9b - Pointer to image/sampler cannot be used. 38574967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // OpenCL v2.0 s6.13.16.1 - Pointer to pipe cannot be used. 38584967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // OpenCL v2.0 s6.12.5 - Pointers to Blocks are not allowed. 38594967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (LangOpts.OpenCL) { 38604967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (T->isImageType() || T->isSamplerT() || T->isPipeType() || 38614967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar T->isBlockPointerType()) { 38624967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(D.getIdentifierLoc(), diag::err_opencl_pointer_to_type) << T; 38634967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar D.setInvalidType(true); 38644967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 38654967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 38664967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 38678cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildPointerType(T, DeclType.Loc, Name); 38682865474261a608c7873b87ba4af110d17907896dJohn McCall if (DeclType.Ptr.TypeQuals) 38698cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, DeclType.Ptr.TypeQuals); 38705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 38710953e767ff7817f97b3ab20896b229891eeff45bJohn McCall case DeclaratorChunk::Reference: { 38726a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Verify that we're not building a reference to pointer to function with 38736a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // exception specification. 38748cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.CPlusPlus && S.CheckDistantExceptionSpec(T)) { 38758cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getIdentifierLoc(), diag::err_distant_exception_spec); 38766a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl D.setInvalidType(true); 38776a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Build the type anyway. 38786a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl } 38798cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildReferenceType(T, DeclType.Ref.LValueRef, DeclType.Loc, Name); 38802865474261a608c7873b87ba4af110d17907896dJohn McCall 38812865474261a608c7873b87ba4af110d17907896dJohn McCall if (DeclType.Ref.HasRestrict) 38828cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, Qualifiers::Restrict); 38835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 38840953e767ff7817f97b3ab20896b229891eeff45bJohn McCall } 38855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclaratorChunk::Array: { 38866a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Verify that we're not building an array of pointers to function with 38876a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // exception specification. 38888cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.CPlusPlus && S.CheckDistantExceptionSpec(T)) { 38898cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getIdentifierLoc(), diag::err_distant_exception_spec); 38906a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl D.setInvalidType(true); 38916a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Build the type anyway. 38926a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl } 3893fd89bc825026e44c68a68db72d4012fd6752e70fChris Lattner DeclaratorChunk::ArrayTypeInfo &ATI = DeclType.Arr; 389494f81fd0b0f81a99d215b225c8c5616295b063f6Chris Lattner Expr *ArraySize = static_cast<Expr*>(ATI.NumElts); 38955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ArrayType::ArraySizeModifier ASM; 38965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (ATI.isStar) 38975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ASM = ArrayType::Star; 38985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else if (ATI.hasStatic) 38995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ASM = ArrayType::Static; 39005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 39015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ASM = ArrayType::Normal; 3902c05a94b7accd4035bf5d5897c434c445b22da855John McCall if (ASM == ArrayType::Star && !D.isPrototypeContext()) { 3903f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman // FIXME: This check isn't quite right: it allows star in prototypes 3904f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman // for function definitions, and disallows some edge cases detailed 3905f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman // in http://gcc.gnu.org/ml/gcc-patches/2009-02/msg00133.html 39068cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Loc, diag::err_array_star_outside_prototype); 3907f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman ASM = ArrayType::Normal; 3908f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman D.setInvalidType(true); 3909f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman } 39107f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg 39117f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // C99 6.7.5.2p1: The optional type qualifiers and the keyword static 39127f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // shall appear only in a declaration of a function parameter with an 39137f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // array type, ... 39147f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg if (ASM == ArrayType::Static || ATI.TypeQuals) { 391599570a58b09fca5d0b328733ab8b6717a1a04f4aMatt Beaumont-Gay if (!(D.isPrototypeContext() || 391699570a58b09fca5d0b328733ab8b6717a1a04f4aMatt Beaumont-Gay D.getContext() == Declarator::KNRTypeListContext)) { 39177f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg S.Diag(DeclType.Loc, diag::err_array_static_outside_prototype) << 39187f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg (ASM == ArrayType::Static ? "'static'" : "type qualifier"); 39197f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // Remove the 'static' and the type qualifiers. 39207f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg if (ASM == ArrayType::Static) 39217f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg ASM = ArrayType::Normal; 39227f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg ATI.TypeQuals = 0; 39237f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg D.setInvalidType(true); 39247f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg } 39257f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg 39267f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // C99 6.7.5.2p1: ... and then only in the outermost array type 39277f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // derivation. 39287f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg unsigned x = chunkIndex; 39297f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg while (x != 0) { 39307f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // Walk outwards along the declarator chunks. 39317f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg x--; 39327f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg const DeclaratorChunk &DC = D.getTypeObject(x); 39337f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg switch (DC.Kind) { 39347f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Paren: 39357f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg continue; 39367f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Array: 39377f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Pointer: 39387f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Reference: 39397f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::MemberPointer: 39407f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg S.Diag(DeclType.Loc, diag::err_array_static_not_outermost) << 39417f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg (ASM == ArrayType::Static ? "'static'" : "type qualifier"); 39427f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg if (ASM == ArrayType::Static) 39437f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg ASM = ArrayType::Normal; 39447f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg ATI.TypeQuals = 0; 39457f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg D.setInvalidType(true); 39467f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg break; 39477f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Function: 39487f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::BlockPointer: 39494967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: 39507f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // These are invalid anyway, so just ignore. 39517f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg break; 39527f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg } 39537f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg } 39547f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg } 3955fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali const AutoType *AT = T->getContainedAutoType(); 3956fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // Allow arrays of auto if we are a generic lambda parameter. 3957fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali // i.e. [](auto (&array)[5]) { return array[0]; }; OK 3958fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali if (AT && D.getContext() != Declarator::LambdaExprParameterContext) { 3959a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith // We've already diagnosed this for decltype(auto). 3960dc7a4f5d7a7e3b60d4dc4a80338d7a2728540998Richard Smith if (!AT->isDecltypeAuto()) 3961a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith S.Diag(DeclType.Loc, diag::err_illegal_decl_array_of_auto) 3962a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith << getPrintableNameForEntity(Name) << T; 3963dc7a4f5d7a7e3b60d4dc4a80338d7a2728540998Richard Smith T = QualType(); 3964dc7a4f5d7a7e3b60d4dc4a80338d7a2728540998Richard Smith break; 3965a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith } 3966a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith 39678ac2c66a1442985091c5ec2b33ce6d3df3bcb529Eli Friedman T = S.BuildArrayType(T, ASM, ArraySize, ATI.TypeQuals, 39688cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis SourceRange(DeclType.Loc, DeclType.EndLoc), Name); 39695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 39705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 3971f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl case DeclaratorChunk::Function: { 39725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If the function declarator has a prototype (i.e. it is not () and 39735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // does not have a K&R-style identifier list), then the arguments are part 39745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // of the type, otherwise the argument list is (). 39755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DeclaratorChunk::FunctionTypeInfo &FTI = DeclType.Fun; 3976d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith IsQualifiedFunction = FTI.TypeQuals || FTI.hasRefQualifier(); 39773cc9726a493d90bd8faf094986a59352fd3461cbSebastian Redl 397834b41d939a1328f484511c6002ba2456db879a29Richard Smith // Check for auto functions and trailing return type and adjust the 397934b41d939a1328f484511c6002ba2456db879a29Richard Smith // return type accordingly. 398034b41d939a1328f484511c6002ba2456db879a29Richard Smith if (!D.isInvalidType()) { 398134b41d939a1328f484511c6002ba2456db879a29Richard Smith // trailing-return-type is only required if we're declaring a function, 398234b41d939a1328f484511c6002ba2456db879a29Richard Smith // and not, for instance, a pointer to a function. 3983651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (D.getDeclSpec().containsPlaceholderType() && 398460e141e1f87211ca831de6821003d80fe20a06f3Richard Smith !FTI.hasTrailingReturnType() && chunkIndex == 0 && 3985176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines !S.getLangOpts().CPlusPlus14) { 39868cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getDeclSpec().getTypeSpecTypeLoc(), 3987651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines D.getDeclSpec().getTypeSpecType() == DeclSpec::TST_auto 3988651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines ? diag::err_auto_missing_trailing_return 3989651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines : diag::err_deduced_return_type); 399034b41d939a1328f484511c6002ba2456db879a29Richard Smith T = Context.IntTy; 399134b41d939a1328f484511c6002ba2456db879a29Richard Smith D.setInvalidType(true); 399254655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith } else if (FTI.hasTrailingReturnType()) { 3993e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // T must be exactly 'auto' at this point. See CWG issue 681. 3994e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith if (isa<ParenType>(T)) { 39958cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getDeclSpec().getTypeSpecTypeLoc(), 3996e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith diag::err_trailing_return_in_parens) 3997e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith << T << D.getDeclSpec().getSourceRange(); 3998e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith D.setInvalidType(true); 3999f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman } else if (D.getContext() != Declarator::LambdaExprContext && 4000a2c3646c35dd09d21b74826240aa916545b1873fRichard Smith (T.hasQualifiers() || !isa<AutoType>(T) || 400187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar cast<AutoType>(T)->getKeyword() != AutoTypeKeyword::Auto)) { 40028cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getDeclSpec().getTypeSpecTypeLoc(), 400334b41d939a1328f484511c6002ba2456db879a29Richard Smith diag::err_trailing_return_without_auto) 400434b41d939a1328f484511c6002ba2456db879a29Richard Smith << T << D.getDeclSpec().getSourceRange(); 400534b41d939a1328f484511c6002ba2456db879a29Richard Smith D.setInvalidType(true); 400634b41d939a1328f484511c6002ba2456db879a29Richard Smith } 400754655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith T = S.GetTypeFromParser(FTI.getTrailingReturnType(), &TInfo); 400854655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith if (T.isNull()) { 400954655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith // An error occurred parsing the trailing return type. 401054655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith T = Context.IntTy; 401154655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith D.setInvalidType(true); 401254655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith } 401334b41d939a1328f484511c6002ba2456db879a29Richard Smith } 401434b41d939a1328f484511c6002ba2456db879a29Richard Smith } 401534b41d939a1328f484511c6002ba2456db879a29Richard Smith 4016e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // C99 6.7.5.3p1: The return type may not be a function or array type. 4017e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // For conversion functions, we'll diagnose this particular error later. 4018e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith if ((T->isArrayType() || T->isFunctionType()) && 4019e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith (D.getName().getKind() != UnqualifiedId::IK_ConversionFunctionId)) { 4020e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith unsigned diagID = diag::err_func_returning_array_function; 4021e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // Last processing chunk in block context means this function chunk 4022e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // represents the block. 4023e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith if (chunkIndex == 0 && 4024e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith D.getContext() == Declarator::BlockLiteralContext) 4025e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith diagID = diag::err_block_returning_array_function; 40268cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Loc, diagID) << T->isFunctionType() << T; 4027e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith T = Context.IntTy; 4028e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith D.setInvalidType(true); 4029e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 4030e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith 4031aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // Do not allow returning half FP value. 4032aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // FIXME: This really should be in BuildFunctionType. 4033aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov if (T->isHalfType()) { 403419dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly if (S.getLangOpts().OpenCL) { 403519dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly if (!S.getOpenCLOptions().cl_khr_fp16) { 40364967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(D.getIdentifierLoc(), diag::err_opencl_invalid_return) 40374967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar << T << 0 /*pointer hint*/; 403819dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly D.setInvalidType(true); 403919dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly } 4040176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines } else if (!S.getLangOpts().HalfArgsAndReturns) { 404119dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly S.Diag(D.getIdentifierLoc(), 404219dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly diag::err_parameters_retval_cannot_have_fp16_type) << 1; 404319dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly D.setInvalidType(true); 404419dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly } 4045aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov } 4046aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov 40474967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // OpenCL v2.0 s6.12.5 - A block cannot be the return value of a 40484967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // function. 40494967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (LangOpts.OpenCL && (T->isBlockPointerType() || T->isImageType() || 40504967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar T->isSamplerT() || T->isPipeType())) { 40514967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(D.getIdentifierLoc(), diag::err_opencl_invalid_return) 40524967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar << T << 1 /*hint off*/; 40534967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar D.setInvalidType(true); 40544967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 40554967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 4056ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman // Methods cannot return interface types. All ObjC objects are 4057ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman // passed by reference. 4058ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman if (T->isObjCObjectType()) { 4059ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman SourceLocation DiagLoc, FixitLoc; 4060ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman if (TInfo) { 4061ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman DiagLoc = TInfo->getTypeLoc().getLocStart(); 40626bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines FixitLoc = S.getLocForEndOfToken(TInfo->getTypeLoc().getLocEnd()); 4063ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman } else { 4064ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman DiagLoc = D.getDeclSpec().getTypeSpecTypeLoc(); 40656bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines FixitLoc = S.getLocForEndOfToken(D.getDeclSpec().getLocEnd()); 4066ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman } 4067ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman S.Diag(DiagLoc, diag::err_object_cannot_be_passed_returned_by_value) 4068ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman << 0 << T 4069ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman << FixItHint::CreateInsertion(FixitLoc, "*"); 4070ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman 4071ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman T = Context.getObjCObjectPointerType(T); 4072ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman if (TInfo) { 4073ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman TypeLocBuilder TLB; 4074ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman TLB.pushFullCopy(TInfo->getTypeLoc()); 4075ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman ObjCObjectPointerTypeLoc TLoc = TLB.push<ObjCObjectPointerTypeLoc>(T); 4076ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman TLoc.setStarLoc(FixitLoc); 4077ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman TInfo = TLB.getTypeSourceInfo(Context, T); 4078ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman } 4079ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman 4080ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman D.setInvalidType(true); 4081ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman } 4082ddb5a3926d715ab4354ca36117679e3f4d5d3e21Eli Friedman 40835291c3cec0dbe8ad1d8e7e67e93af2b1586d5400Douglas Gregor // cv-qualifiers on return types are pointless except when the type is a 40845291c3cec0dbe8ad1d8e7e67e93af2b1586d5400Douglas Gregor // class type in C++. 40858c952cd40ccec9d720931f27e7d722fed207d536Richard Smith if ((T.getCVRQualifiers() || T->isAtomicType()) && 40868c952cd40ccec9d720931f27e7d722fed207d536Richard Smith !(S.getLangOpts().CPlusPlus && 40870e2c34f92f00628d48968dfea096d36381f494cbStephen Hines (T->isDependentType() || T->isRecordType()))) { 4088b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar if (T->isVoidType() && !S.getLangOpts().CPlusPlus && 4089b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar D.getFunctionDefinitionKind() == FDK_Definition) { 4090b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // [6.9.1/3] qualified void return is invalid on a C 4091b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // function definition. Apparently ok on declarations and 4092b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // in C++ though (!) 4093b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar S.Diag(DeclType.Loc, diag::err_func_returning_qualified_void) << T; 4094b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar } else 4095b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar diagnoseRedundantReturnTypeQualifiers(S, T, D, chunkIndex); 40960e2c34f92f00628d48968dfea096d36381f494cbStephen Hines } 4097d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 409802dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor // Objective-C ARC ownership qualifiers are ignored on the function 409902dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor // return type (by type canonicalization). Complain if this attribute 410002dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor // was written here. 410102dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor if (T.getQualifiers().hasObjCLifetime()) { 410202dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor SourceLocation AttrLoc; 410302dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor if (chunkIndex + 1 < D.getNumTypeObjects()) { 410402dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor DeclaratorChunk ReturnTypeChunk = D.getTypeObject(chunkIndex + 1); 410502dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor for (const AttributeList *Attr = ReturnTypeChunk.getAttrs(); 410602dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor Attr; Attr = Attr->getNext()) { 410702dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor if (Attr->getKind() == AttributeList::AT_ObjCOwnership) { 410802dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor AttrLoc = Attr->getLoc(); 410902dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor break; 411002dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 411102dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 411202dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 411302dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor if (AttrLoc.isInvalid()) { 411402dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor for (const AttributeList *Attr 411502dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor = D.getDeclSpec().getAttributes().getList(); 411602dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor Attr; Attr = Attr->getNext()) { 411702dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor if (Attr->getKind() == AttributeList::AT_ObjCOwnership) { 411802dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor AttrLoc = Attr->getLoc(); 411902dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor break; 412002dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 412102dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 412202dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 412302dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor 412402dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor if (AttrLoc.isValid()) { 412502dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor // The ownership attributes are almost always written via 412602dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor // the predefined 412702dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor // __strong/__weak/__autoreleasing/__unsafe_unretained. 412802dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor if (AttrLoc.isMacroID()) 412902dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor AttrLoc = S.SourceMgr.getImmediateExpansionRange(AttrLoc).first; 413002dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor 413102dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor S.Diag(AttrLoc, diag::warn_arc_lifetime_result_type) 413202dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor << T.getQualifiers().getObjCLifetime(); 413302dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 413402dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 413502dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor 4136f0cc19f43d5e05dbd22d00faca8c093b7005be3fBill Wendling if (LangOpts.CPlusPlus && D.getDeclSpec().hasTagDefinition()) { 4137402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor // C++ [dcl.fct]p6: 4138402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor // Types shall not be defined in return or parameter types. 4139b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall TagDecl *Tag = cast<TagDecl>(D.getDeclSpec().getRepAsDecl()); 4140f0cc19f43d5e05dbd22d00faca8c093b7005be3fBill Wendling S.Diag(Tag->getLocation(), diag::err_type_defined_in_result_type) 4141f0cc19f43d5e05dbd22d00faca8c093b7005be3fBill Wendling << Context.getTypeDeclType(Tag); 4142402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor } 4143402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor 41443cc9726a493d90bd8faf094986a59352fd3461cbSebastian Redl // Exception specs are not allowed in typedefs. Complain, but add it 41453cc9726a493d90bd8faf094986a59352fd3461cbSebastian Redl // anyway. 4146162e1c1b487352434552147967c3dd296ebee2f7Richard Smith if (IsTypedefName && FTI.getExceptionSpecType()) 414787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(FTI.getExceptionSpecLocBeg(), 414887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar diag::err_exception_spec_in_typedef) 414987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << (D.getContext() == Declarator::AliasDeclContext || 415087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getContext() == Declarator::AliasTemplateContext); 41513cc9726a493d90bd8faf094986a59352fd3461cbSebastian Redl 4152b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // If we see "T var();" or "T var(T());" at block scope, it is probably 4153b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // an attempt to initialize a variable, not a function declaration. 4154b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (FTI.isAmbiguous) 4155b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith warnAboutAmbiguousFunction(S, D, DeclType, T); 4156b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 4157ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner FunctionType::ExtInfo EI(getCCForDeclaratorChunk(S, D, FTI, chunkIndex)); 4158ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner 4159651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (!FTI.NumParams && !FTI.isVariadic && !LangOpts.CPlusPlus) { 41602865474261a608c7873b87ba4af110d17907896dJohn McCall // Simple void foo(), where the incoming T is the result type. 4161ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner T = Context.getFunctionNoProtoType(T, EI); 41622865474261a608c7873b87ba4af110d17907896dJohn McCall } else { 41632865474261a608c7873b87ba4af110d17907896dJohn McCall // We allow a zero-parameter variadic function in C if the 41642865474261a608c7873b87ba4af110d17907896dJohn McCall // function is marked with the "overloadable" attribute. Scan 41652865474261a608c7873b87ba4af110d17907896dJohn McCall // for this attribute now. 4166651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (!FTI.NumParams && FTI.isVariadic && !LangOpts.CPlusPlus) { 4167965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor bool Overloadable = false; 4168965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor for (const AttributeList *Attrs = D.getAttributes(); 4169965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor Attrs; Attrs = Attrs->getNext()) { 41708e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (Attrs->getKind() == AttributeList::AT_Overloadable) { 4171965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor Overloadable = true; 4172965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor break; 4173965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor } 4174965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor } 4175965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor 4176965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor if (!Overloadable) 41776bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines S.Diag(FTI.getEllipsisLoc(), diag::err_ellipsis_first_param); 4178c6f7345e44e079f373d6bdecaa06c7e06574dc27Argyrios Kyrtzidis } 41792865474261a608c7873b87ba4af110d17907896dJohn McCall 41806bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (FTI.NumParams && FTI.Params[0].Param == nullptr) { 4181788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner // C99 6.7.5.3p3: Reject int(x,y,z) when it's not a function 4182788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner // definition. 4183651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines S.Diag(FTI.Params[0].IdentLoc, 4184651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines diag::err_ident_list_in_fn_declaration); 41852865474261a608c7873b87ba4af110d17907896dJohn McCall D.setInvalidType(true); 4186d5668a2447c2afeea38815b51a80a5a6ac235599Argyrios Kyrtzidis // Recover by creating a K&R-style function type. 4187ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner T = Context.getFunctionNoProtoType(T, EI); 41882865474261a608c7873b87ba4af110d17907896dJohn McCall break; 41892865474261a608c7873b87ba4af110d17907896dJohn McCall } 41902865474261a608c7873b87ba4af110d17907896dJohn McCall 4191e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall FunctionProtoType::ExtProtoInfo EPI; 4192ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner EPI.ExtInfo = EI; 4193e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI.Variadic = FTI.isVariadic; 419454655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith EPI.HasTrailingReturn = FTI.hasTrailingReturnType(); 4195e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI.TypeQuals = FTI.TypeQuals; 4196c938c1668b4fd12af154e965dd935a89e4801a70Douglas Gregor EPI.RefQualifier = !FTI.hasRefQualifier()? RQ_None 4197c938c1668b4fd12af154e965dd935a89e4801a70Douglas Gregor : FTI.RefQualifierIsLValueRef? RQ_LValue 4198c938c1668b4fd12af154e965dd935a89e4801a70Douglas Gregor : RQ_RValue; 419991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 42006bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // Otherwise, we have a function with a parameter list that is 42015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // potentially variadic. 42026bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines SmallVector<QualType, 16> ParamTys; 42036bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines ParamTys.reserve(FTI.NumParams); 42041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 42054967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar SmallVector<FunctionProtoType::ExtParameterInfo, 16> 42064967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar ExtParameterInfos(FTI.NumParams); 42074967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar bool HasAnyInterestingExtParameterInfos = false; 4208f85e193739c953358c865005855253af4f68a497John McCall 4209651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines for (unsigned i = 0, e = FTI.NumParams; i != e; ++i) { 4210651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines ParmVarDecl *Param = cast<ParmVarDecl>(FTI.Params[i].Param); 42116bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines QualType ParamTy = Param->getType(); 42126bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines assert(!ParamTy.isNull() && "Couldn't parse type?"); 42132dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor 42146bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // Look for 'void'. void is allowed only as a single parameter to a 42155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // function with no other parameters (C99 6.7.5.3p10). We record 42166bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // int(void) as a FunctionProtoType with an empty parameter list. 42176bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (ParamTy->isVoidType()) { 42185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is something like 'float(int, void)', reject it. 'void' 42195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // is an incomplete type (C99 6.2.5p19) and function decls cannot 42206bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // have parameters of incomplete type. 4221651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (FTI.NumParams != 1 || FTI.isVariadic) { 42228cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Loc, diag::err_void_only_param); 42236bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines ParamTy = Context.IntTy; 42246bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines Param->setType(ParamTy); 4225651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } else if (FTI.Params[i].Ident) { 42262ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner // Reject, but continue to parse 'int(void abc)'. 4227651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines S.Diag(FTI.Params[i].IdentLoc, diag::err_param_with_void_type); 42286bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines ParamTy = Context.IntTy; 42296bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines Param->setType(ParamTy); 42302ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner } else { 42312ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner // Reject, but continue to parse 'float(const void)'. 42326bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (ParamTy.hasQualifiers()) 42338cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Loc, diag::err_void_param_qualified); 42341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 42356bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // Do not add 'void' to the list. 42362ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner break; 42372ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner } 42386bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines } else if (ParamTy->isHalfType()) { 42396bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // Disallow half FP parameters. 4240aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // FIXME: This really should be in BuildFunctionType. 424119dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly if (S.getLangOpts().OpenCL) { 424219dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly if (!S.getOpenCLOptions().cl_khr_fp16) { 424319dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly S.Diag(Param->getLocation(), 42446bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines diag::err_opencl_half_param) << ParamTy; 424519dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly D.setInvalidType(); 42469dd74c5504c743c96ea3a1d691d6a75ec3a98147John McCall Param->setInvalidDecl(); 424719dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly } 4248176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines } else if (!S.getLangOpts().HalfArgsAndReturns) { 424919dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly S.Diag(Param->getLocation(), 425019dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly diag::err_parameters_retval_cannot_have_fp16_type) << 0; 425119dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly D.setInvalidType(); 425219dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly } 4253eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman } else if (!FTI.hasPrototype) { 42546bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (ParamTy->isPromotableIntegerType()) { 42556bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines ParamTy = Context.getPromotedIntegerType(ParamTy); 4256eecf5fa12d5426637c47d7072f0c193a8d7ff68bJohn McCall Param->setKNRPromoted(true); 42576bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines } else if (const BuiltinType* BTy = ParamTy->getAs<BuiltinType>()) { 4258eecf5fa12d5426637c47d7072f0c193a8d7ff68bJohn McCall if (BTy->getKind() == BuiltinType::Float) { 42596bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines ParamTy = Context.DoubleTy; 4260eecf5fa12d5426637c47d7072f0c193a8d7ff68bJohn McCall Param->setKNRPromoted(true); 4261eecf5fa12d5426637c47d7072f0c193a8d7ff68bJohn McCall } 4262eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman } 42635f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 426456a965c0f77c9e6bffd65cc8f8796442a8527381Fariborz Jahanian 42654967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (LangOpts.ObjCAutoRefCount && Param->hasAttr<NSConsumedAttr>()) { 42664967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar ExtParameterInfos[i] = ExtParameterInfos[i].withIsConsumed(true); 42674967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar HasAnyInterestingExtParameterInfos = true; 42684967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 42694967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 42704967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (auto attr = Param->getAttr<ParameterABIAttr>()) { 42714967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar ExtParameterInfos[i] = 42724967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar ExtParameterInfos[i].withABI(attr->getABI()); 42734967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar HasAnyInterestingExtParameterInfos = true; 4274f85e193739c953358c865005855253af4f68a497John McCall } 4275f85e193739c953358c865005855253af4f68a497John McCall 42766bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines ParamTys.push_back(ParamTy); 42775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4278465226e23a3008bd68973513dda1f9e3cd27dbddSebastian Redl 42794967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (HasAnyInterestingExtParameterInfos) { 42804967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar EPI.ExtParameterInfos = ExtParameterInfos.data(); 42814967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar checkExtParameterInfos(S, ParamTys, EPI, 42824967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar [&](unsigned i) { return FTI.Params[i].Param->getLocation(); }); 42834967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 4284f85e193739c953358c865005855253af4f68a497John McCall 42855f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<QualType, 4> Exceptions; 428674e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor SmallVector<ParsedType, 2> DynamicExceptions; 428774e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor SmallVector<SourceRange, 2> DynamicExceptionRanges; 42886bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines Expr *NoexceptExpr = nullptr; 428991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 42908b5b4099c61a136e9a1714c4d8a593febe942268Sebastian Redl if (FTI.getExceptionSpecType() == EST_Dynamic) { 429174e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor // FIXME: It's rather inefficient to have to split into two vectors 429274e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor // here. 429374e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor unsigned N = FTI.NumExceptions; 429474e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptions.reserve(N); 429574e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptionRanges.reserve(N); 429674e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor for (unsigned I = 0; I != N; ++I) { 429774e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptions.push_back(FTI.Exceptions[I].Ty); 429874e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptionRanges.push_back(FTI.Exceptions[I].Range); 4299e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall } 43008b5b4099c61a136e9a1714c4d8a593febe942268Sebastian Redl } else if (FTI.getExceptionSpecType() == EST_ComputedNoexcept) { 430174e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor NoexceptExpr = FTI.NoexceptExpr; 430274e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor } 430391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4304176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines S.checkExceptionSpecification(D.isFunctionDeclarationContext(), 4305176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines FTI.getExceptionSpecType(), 430674e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptions, 430774e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptionRanges, 430874e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor NoexceptExpr, 430974e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor Exceptions, 4310176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines EPI.ExceptionSpec); 431191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 43126bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines T = Context.getFunctionType(T, ParamTys, EPI); 43135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 43145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 43155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 43164967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::MemberPointer: { 4317f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl // The scope spec must refer to a class, or be dependent. 43187bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara CXXScopeSpec &SS = DeclType.Mem.Scope(); 4319f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl QualType ClsType; 432087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 432187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Handle pointer nullability. 432287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar inferPointerNullability(SimplePointerKind::MemberPointer, 432387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DeclType.Loc, DeclType.getAttrListRef()); 432487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 43257bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara if (SS.isInvalid()) { 4326edc287751a4b05e3b4d8ff2b38fa30c5b59a548bJeffrey Yasskin // Avoid emitting extra errors if we already errored on the scope. 4327edc287751a4b05e3b4d8ff2b38fa30c5b59a548bJeffrey Yasskin D.setInvalidType(true); 43288cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis } else if (S.isDependentScopeSpecifier(SS) || 43298cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis dyn_cast_or_null<CXXRecordDecl>(S.computeDeclContext(SS))) { 4330651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines NestedNameSpecifier *NNS = SS.getScopeRep(); 433187c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor NestedNameSpecifier *NNSPrefix = NNS->getPrefix(); 433287c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor switch (NNS->getKind()) { 433387c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::Identifier: 43347bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara ClsType = Context.getDependentNameType(ETK_None, NNSPrefix, 43354a2023f5014e82389d5980d307b89c545dbbac81Douglas Gregor NNS->getAsIdentifier()); 433687c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor break; 433787c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor 433887c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::Namespace: 433914aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor case NestedNameSpecifier::NamespaceAlias: 434087c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::Global: 4341176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines case NestedNameSpecifier::Super: 43429f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Nested-name-specifier must name a type"); 43437bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara 434487c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::TypeSpec: 434587c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::TypeSpecWithTemplate: 434687c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor ClsType = QualType(NNS->getAsType(), 0); 434791ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // Note: if the NNS has a prefix and ClsType is a nondependent 434891ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // TemplateSpecializationType, then the NNS prefix is NOT included 434991ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // in ClsType; hence we wrap ClsType into an ElaboratedType. 435091ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // NOTE: in particular, no wrap occurs if ClsType already is an 435191ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // Elaborated, DependentName, or DependentTemplateSpecialization. 435291ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara if (NNSPrefix && isa<TemplateSpecializationType>(NNS->getAsType())) 43537bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara ClsType = Context.getElaboratedType(ETK_None, NNSPrefix, ClsType); 435487c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor break; 435587c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor } 4356f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } else { 43578cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Mem.Scope().getBeginLoc(), 4358949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor diag::err_illegal_decl_mempointer_in_nonclass) 4359949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor << (D.getIdentifier() ? D.getIdentifier()->getName() : "type name") 4360949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor << DeclType.Mem.Scope().getRange(); 4361f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl D.setInvalidType(true); 4362f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 4363f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl 4364949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (!ClsType.isNull()) 43650e2c34f92f00628d48968dfea096d36381f494cbStephen Hines T = S.BuildMemberPointerType(T, ClsType, DeclType.Loc, 43660e2c34f92f00628d48968dfea096d36381f494cbStephen Hines D.getIdentifier()); 4367949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (T.isNull()) { 4368f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl T = Context.IntTy; 4369949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor D.setInvalidType(true); 43702865474261a608c7873b87ba4af110d17907896dJohn McCall } else if (DeclType.Mem.TypeQuals) { 43718cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, DeclType.Mem.TypeQuals); 4372f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 4373f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl break; 4374f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 4375f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl 43764967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: { 43774967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar T = S.BuildPipeType(T, DeclType.Loc ); 43784967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar break; 43794967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 43804967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 43814967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 4382cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T.isNull()) { 4383cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor D.setInvalidType(true); 4384cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor T = Context.IntTy; 4385cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 4386cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 4387c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // See if there are any attributes on this declarator chunk. 438887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar processTypeAttrs(state, T, TAL_DeclChunk, 438987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar const_cast<AttributeList *>(DeclType.getAttrs())); 43905f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 4391971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis 43920e2c34f92f00628d48968dfea096d36381f494cbStephen Hines assert(!T.isNull() && "T must not be null after this point"); 43930e2c34f92f00628d48968dfea096d36381f494cbStephen Hines 43948cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.CPlusPlus && T->isFunctionType()) { 4395183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall const FunctionProtoType *FnTy = T->getAs<FunctionProtoType>(); 4396778ed741de8ada0049b89608af0abdb5ae6e106eChris Lattner assert(FnTy && "Why oh why is there not a FunctionProtoType here?"); 4397971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis 439891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // C++ 8.3.5p4: 4399708f3b8e350a5c0605889a4f32b26686864495caDouglas Gregor // A cv-qualifier-seq shall only be part of the function type 4400708f3b8e350a5c0605889a4f32b26686864495caDouglas Gregor // for a nonstatic member function, the function type to which a pointer 4401708f3b8e350a5c0605889a4f32b26686864495caDouglas Gregor // to member refers, or the top-level function type of a function typedef 4402708f3b8e350a5c0605889a4f32b26686864495caDouglas Gregor // declaration. 4403683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor // 4404683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor // Core issue 547 also allows cv-qualifiers on function types that are 4405683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor // top-level template type arguments. 4406613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall bool FreeFunction; 4407613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall if (!D.getCXXScopeSpec().isSet()) { 4408579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling FreeFunction = ((D.getContext() != Declarator::MemberContext && 4409579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling D.getContext() != Declarator::LambdaExprContext) || 4410579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling D.getDeclSpec().isFriendSpecified()); 4411613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall } else { 44128cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis DeclContext *DC = S.computeDeclContext(D.getCXXScopeSpec()); 4413613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall FreeFunction = (DC && !DC->isRecord()); 4414613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall } 4415613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall 4416d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // C++11 [dcl.fct]p6 (w/DR1417): 4417d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // An attempt to specify a function type with a cv-qualifier-seq or a 4418d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // ref-qualifier (including by typedef-name) is ill-formed unless it is: 4419d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the function type for a non-static member function, 4420d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the function type to which a pointer to member refers, 4421d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the top-level function type of a function typedef declaration or 4422d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // alias-declaration, 4423d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the type-id in the default argument of a type-parameter, or 4424d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the type-id of a template-argument for a type-parameter 44256bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // 44266bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // FIXME: Checking this here is insufficient. We accept-invalid on: 44276bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // 44286bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // template<typename T> struct S { void f(T); }; 44296bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // S<int() const> s; 44306bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // 44316bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // ... for instance. 4432d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (IsQualifiedFunction && 4433d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith !(!FreeFunction && 4434d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith D.getDeclSpec().getStorageClassSpec() != DeclSpec::SCS_static) && 4435d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith !IsTypedefName && 4436d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith D.getContext() != Declarator::TemplateTypeArgContext) { 443796a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceLocation Loc = D.getLocStart(); 4438d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith SourceRange RemovalRange; 4439d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith unsigned I; 4440d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (D.isFunctionDeclarator(I)) { 4441d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith SmallVector<SourceLocation, 4> RemovalLocs; 4442d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith const DeclaratorChunk &Chunk = D.getTypeObject(I); 4443d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith assert(Chunk.Kind == DeclaratorChunk::Function); 4444d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (Chunk.Fun.hasRefQualifier()) 4445d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith RemovalLocs.push_back(Chunk.Fun.getRefQualifierLoc()); 4446d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (Chunk.Fun.TypeQuals & Qualifiers::Const) 4447d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith RemovalLocs.push_back(Chunk.Fun.getConstQualifierLoc()); 4448d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (Chunk.Fun.TypeQuals & Qualifiers::Volatile) 4449d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith RemovalLocs.push_back(Chunk.Fun.getVolatileQualifierLoc()); 4450176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines if (Chunk.Fun.TypeQuals & Qualifiers::Restrict) 4451176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines RemovalLocs.push_back(Chunk.Fun.getRestrictQualifierLoc()); 4452d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (!RemovalLocs.empty()) { 4453d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith std::sort(RemovalLocs.begin(), RemovalLocs.end(), 4454aa0cd85838f2a024e589ea4e8c2094130065af21Dmitri Gribenko BeforeThanCompare<SourceLocation>(S.getSourceManager())); 4455d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith RemovalRange = SourceRange(RemovalLocs.front(), RemovalLocs.back()); 4456d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith Loc = RemovalLocs.front(); 4457683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor } 4458683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor } 4459d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 4460d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith S.Diag(Loc, diag::err_invalid_qualified_function_type) 4461d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith << FreeFunction << D.isFunctionDeclarator() << T 4462d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith << getFunctionQualifiersAsString(FnTy) 4463d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith << FixItHint::CreateRemoval(RemovalRange); 4464d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 4465d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // Strip the cv-qualifiers and ref-qualifiers from the type. 4466d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith FunctionProtoType::ExtProtoInfo EPI = FnTy->getExtProtoInfo(); 4467d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith EPI.TypeQuals = 0; 4468d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith EPI.RefQualifier = RQ_None; 4469d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 4470651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines T = Context.getFunctionType(FnTy->getReturnType(), FnTy->getParamTypes(), 4471bea522ff43a3f11c7a2bc7949119dbb9fce19e39Jordan Rose EPI); 4472e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith // Rebuild any parens around the identifier in the function type. 4473e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 4474e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith if (D.getTypeObject(i).Kind != DeclaratorChunk::Paren) 4475e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith break; 4476e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith T = S.BuildParenType(T); 4477e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith } 4478971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis } 4479971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis } 44801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4481711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Apply any undistributed attributes from the declarator. 448287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar processTypeAttrs(state, T, TAL_DeclName, D.getAttributes()); 4483711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 4484711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Diagnose any ignored type attributes. 44850e2c34f92f00628d48968dfea096d36381f494cbStephen Hines state.diagnoseIgnoredTypeAttrs(T); 4486711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 4487148f1f7936afd718bac7be95089e77673e43f16fPeter Collingbourne // C++0x [dcl.constexpr]p9: 4488148f1f7936afd718bac7be95089e77673e43f16fPeter Collingbourne // A constexpr specifier used in an object declaration declares the object 448991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // as const. 4490148f1f7936afd718bac7be95089e77673e43f16fPeter Collingbourne if (D.getDeclSpec().isConstexprSpecified() && T->isObjectType()) { 4491737801257f795632175517ffce4a80c62fc7bff7Sebastian Redl T.addConst(); 4492737801257f795632175517ffce4a80c62fc7bff7Sebastian Redl } 4493737801257f795632175517ffce4a80c62fc7bff7Sebastian Redl 449491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // If there was an ellipsis in the declarator, the declaration declares a 4495a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // parameter pack whose type may be a pack expansion type. 44960e2c34f92f00628d48968dfea096d36381f494cbStephen Hines if (D.hasEllipsis()) { 4497a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // C++0x [dcl.fct]p13: 449891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // A declarator-id or abstract-declarator containing an ellipsis shall 4499a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // only be used in a parameter-declaration. Such a parameter-declaration 4500a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // is a parameter pack (14.5.3). [...] 4501a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor switch (D.getContext()) { 4502a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::PrototypeContext: 4503fad9e13f3cb85198f0ee5af620ba81cd78574faaFaisal Vali case Declarator::LambdaExprParameterContext: 4504a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // C++0x [dcl.fct]p13: 450591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // [...] When it is part of a parameter-declaration-clause, the 450691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // parameter pack is a function parameter pack (14.5.3). The type T 4507a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // of the declarator-id of the function parameter pack shall contain 450891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // a template parameter pack; each template parameter pack in T is 4509a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // expanded by the function parameter pack. 4510a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // 4511a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // We represent function parameter packs as function parameters whose 4512a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // type is a pack expansion. 4513a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor if (!T->containsUnexpandedParameterPack()) { 451491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier S.Diag(D.getEllipsisLoc(), 4515a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor diag::err_function_parameter_pack_without_parameter_packs) 4516a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor << T << D.getSourceRange(); 4517a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor D.setEllipsisLoc(SourceLocation()); 4518a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } else { 451966874fb18afbffb8b2ca05576851a64534be3352David Blaikie T = Context.getPackExpansionType(T, None); 4520a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } 4521a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor break; 4522a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::TemplateParamContext: 4523a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // C++0x [temp.param]p15: 452491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // If a template-parameter is a [...] is a parameter-declaration that 4525a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // declares a parameter pack (8.3.5), then the template-parameter is a 4526a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // template parameter pack (14.5.3). 4527a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // 4528a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // Note: core issue 778 clarifies that, if there are any unexpanded 4529a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // parameter packs in the type of the non-type template parameter, then 4530a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // it expands those parameter packs. 4531a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor if (T->containsUnexpandedParameterPack()) 453266874fb18afbffb8b2ca05576851a64534be3352David Blaikie T = Context.getPackExpansionType(T, None); 4533e5acd13f885ac95d0f2dafda245625b8190235acRichard Smith else 4534e5acd13f885ac95d0f2dafda245625b8190235acRichard Smith S.Diag(D.getEllipsisLoc(), 453580ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith LangOpts.CPlusPlus11 4536e5acd13f885ac95d0f2dafda245625b8190235acRichard Smith ? diag::warn_cxx98_compat_variadic_templates 4537e5acd13f885ac95d0f2dafda245625b8190235acRichard Smith : diag::ext_variadic_templates); 4538a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor break; 453991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4540a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::FileContext: 4541a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::KNRTypeListContext: 4542cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCParameterContext: // FIXME: special diagnostic here? 4543cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCResultContext: // FIXME: special diagnostic here? 4544a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::TypeNameContext: 45450b8c98f3ddf83adcb9e9d98b68ce38e970cdee73Argyrios Kyrtzidis case Declarator::CXXNewContext: 4546162e1c1b487352434552147967c3dd296ebee2f7Richard Smith case Declarator::AliasDeclContext: 45473e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith case Declarator::AliasTemplateContext: 4548a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::MemberContext: 4549a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::BlockContext: 4550a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::ForContext: 45514967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case Declarator::InitStmtContext: 4552a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::ConditionContext: 4553a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::CXXCatchContext: 455417b6399f8461c5b7e1c6f367b0a0dde49f921240Argyrios Kyrtzidis case Declarator::ObjCCatchContext: 4555a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::BlockLiteralContext: 4556f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman case Declarator::LambdaExprContext: 455714f78f4a11df4c06667e2cbb87eeb179e4cb46feRichard Smith case Declarator::ConversionIdContext: 45587796eb5643244f3134834253ce5ea89107ac21c1Richard Smith case Declarator::TrailingReturnContext: 4559683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor case Declarator::TemplateTypeArgContext: 4560a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // FIXME: We may want to allow parameter packs in block-literal contexts 4561a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // in the future. 45620e2c34f92f00628d48968dfea096d36381f494cbStephen Hines S.Diag(D.getEllipsisLoc(), 45630e2c34f92f00628d48968dfea096d36381f494cbStephen Hines diag::err_ellipsis_in_declarator_not_parameter); 4564a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor D.setEllipsisLoc(SourceLocation()); 4565a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor break; 4566a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } 4567a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } 4568e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith 45690e2c34f92f00628d48968dfea096d36381f494cbStephen Hines assert(!T.isNull() && "T must not be null at the end of this function"); 45700e2c34f92f00628d48968dfea096d36381f494cbStephen Hines if (D.isInvalidType()) 4571bf1a028246d884a540aeafa38e89be59a269b072John McCall return Context.getTrivialTypeSourceInfo(T); 4572db7abf78dedc2ef6ccb42b3dac6ab330fe2ea469Argyrios Kyrtzidis 45738cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis return S.GetTypeSourceInfoForDeclarator(D, T, TInfo); 45748cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis} 45758cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 45768cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// GetTypeForDeclarator - Convert the type for the specified 45778cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// declarator to Type instances. 45788cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// 45798cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// The result of this call will never be null, but the associated 45808cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// type may be a null type if there's an unrecoverable error. 45818cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios KyrtzidisTypeSourceInfo *Sema::GetTypeForDeclarator(Declarator &D, Scope *S) { 45828cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // Determine the type of the declarator. Not all forms of declarator 45838cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // have a type. 45848cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 45858cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis TypeProcessingState state(*this, D); 45868cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 45876bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines TypeSourceInfo *ReturnTypeInfo = nullptr; 45888cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis QualType T = GetDeclSpecTypeForDeclarator(state, ReturnTypeInfo); 45898cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 45904e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (D.isPrototypeContext() && getLangOpts().ObjCAutoRefCount) 45918cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis inferARCWriteback(state, T); 459291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 45938cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis return GetFullTypeForDeclarator(state, T, ReturnTypeInfo); 45945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 45955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 459631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidisstatic void transferARCOwnershipToDeclSpec(Sema &S, 459731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis QualType &declSpecTy, 459831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers::ObjCLifetime ownership) { 459931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (declSpecTy->isObjCRetainableType() && 460031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis declSpecTy.getObjCLifetime() == Qualifiers::OCL_None) { 460131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers qs; 460231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis qs.addObjCLifetime(ownership); 460331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis declSpecTy = S.Context.getQualifiedType(declSpecTy, qs); 460431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 460531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis} 460631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 460731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidisstatic void transferARCOwnershipToDeclaratorChunk(TypeProcessingState &state, 460831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers::ObjCLifetime ownership, 460931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis unsigned chunkIndex) { 461031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Sema &S = state.getSema(); 461131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Declarator &D = state.getDeclarator(); 461231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 461331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // Look for an explicit lifetime attribute. 461431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis DeclaratorChunk &chunk = D.getTypeObject(chunkIndex); 461531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis for (const AttributeList *attr = chunk.getAttrs(); attr; 461631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis attr = attr->getNext()) 46178e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr->getKind() == AttributeList::AT_ObjCOwnership) 461831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return; 461931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 46206bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines const char *attrStr = nullptr; 462131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis switch (ownership) { 46223026348bd4c13a0f83b59839f64065e0fcbea253David Blaikie case Qualifiers::OCL_None: llvm_unreachable("no ownership!"); 462331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case Qualifiers::OCL_ExplicitNone: attrStr = "none"; break; 462431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case Qualifiers::OCL_Strong: attrStr = "strong"; break; 462531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case Qualifiers::OCL_Weak: attrStr = "weak"; break; 462631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case Qualifiers::OCL_Autoreleasing: attrStr = "autoreleasing"; break; 462731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 462831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 4629624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman IdentifierLoc *Arg = new (S.Context) IdentifierLoc; 4630624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman Arg->Ident = &S.Context.Idents.get(attrStr); 4631624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman Arg->Loc = SourceLocation(); 4632624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman 4633624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman ArgsUnion Args(Arg); 4634624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman 463531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // If there wasn't one, add one (with an invalid source location 463631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // so that we don't make an AttributedType for it). 463731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis AttributeList *attr = D.getAttributePool() 463831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis .create(&S.Context.Idents.get("objc_ownership"), SourceLocation(), 46396bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines /*scope*/ nullptr, SourceLocation(), 4640624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman /*args*/ &Args, 1, AttributeList::AS_GNU); 464131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis spliceAttrIntoList(*attr, chunk.getAttrListRef()); 464231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 464331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // TODO: mark whether we did this inference? 464431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis} 464531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 464648d798ce32447607144db70a484cdb99c1180663Benjamin Kramer/// \brief Used for transferring ownership in casts resulting in l-values. 464731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidisstatic void transferARCOwnership(TypeProcessingState &state, 464831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis QualType &declSpecTy, 464931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers::ObjCLifetime ownership) { 465031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Sema &S = state.getSema(); 465131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Declarator &D = state.getDeclarator(); 465231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 465331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis int inner = -1; 46546ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis bool hasIndirection = false; 465531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 465631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis DeclaratorChunk &chunk = D.getTypeObject(i); 465731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis switch (chunk.Kind) { 465831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Paren: 465931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // Ignore parens. 466031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis break; 466131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 466231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Array: 466331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Reference: 466431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Pointer: 46656ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis if (inner != -1) 46666ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis hasIndirection = true; 466731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis inner = i; 466831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis break; 466931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 467031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::BlockPointer: 46716ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis if (inner != -1) 46726ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis transferARCOwnershipToDeclaratorChunk(state, ownership, i); 46736ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis return; 467431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 467531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Function: 467631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::MemberPointer: 46774967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: 467831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return; 467931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 468031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 468131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 468231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (inner == -1) 46836ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis return; 468431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 468591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier DeclaratorChunk &chunk = D.getTypeObject(inner); 468631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (chunk.Kind == DeclaratorChunk::Pointer) { 468731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (declSpecTy->isObjCRetainableType()) 468831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return transferARCOwnershipToDeclSpec(S, declSpecTy, ownership); 46896ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis if (declSpecTy->isObjCObjectType() && hasIndirection) 469031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return transferARCOwnershipToDeclaratorChunk(state, ownership, inner); 469131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } else { 469231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis assert(chunk.Kind == DeclaratorChunk::Array || 469331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis chunk.Kind == DeclaratorChunk::Reference); 469431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return transferARCOwnershipToDeclSpec(S, declSpecTy, ownership); 469531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 469631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis} 469731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 469831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios KyrtzidisTypeSourceInfo *Sema::GetTypeForDeclaratorCast(Declarator &D, QualType FromTy) { 469931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis TypeProcessingState state(*this, D); 470031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 47016bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines TypeSourceInfo *ReturnTypeInfo = nullptr; 470231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis QualType declSpecTy = GetDeclSpecTypeForDeclarator(state, ReturnTypeInfo); 470331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 470487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (getLangOpts().ObjC1) { 470531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers::ObjCLifetime ownership = Context.getInnerObjCOwnership(FromTy); 470631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (ownership != Qualifiers::OCL_None) 470731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis transferARCOwnership(state, declSpecTy, ownership); 470831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 470931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 471031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return GetFullTypeForDeclarator(state, declSpecTy, ReturnTypeInfo); 471131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis} 471231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 471314aa2175416f79ef17811282afbf425f87d54ebfJohn McCall/// Map an AttributedType::Kind to an AttributeList::Kind. 471414aa2175416f79ef17811282afbf425f87d54ebfJohn McCallstatic AttributeList::Kind getAttrListKind(AttributedType::Kind kind) { 471514aa2175416f79ef17811282afbf425f87d54ebfJohn McCall switch (kind) { 471614aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_address_space: 47178e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_AddressSpace; 471814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_regparm: 47198e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_Regparm; 472014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_vector_size: 47218e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_VectorSize; 472214aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_neon_vector_type: 47238e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_NeonVectorType; 472414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_neon_polyvector_type: 47258e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_NeonPolyVectorType; 472614aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_objc_gc: 47278e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_ObjCGC; 4728b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis case AttributedType::attr_objc_ownership: 472987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case AttributedType::attr_objc_inert_unsafe_unretained: 47308e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_ObjCOwnership; 473114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_noreturn: 47328e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_NoReturn; 473314aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_cdecl: 47348e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_CDecl; 473514aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_fastcall: 47368e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_FastCall; 473714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_stdcall: 47388e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_StdCall; 473914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_thiscall: 47408e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_ThisCall; 474114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_pascal: 47428e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_Pascal; 47434967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case AttributedType::attr_swiftcall: 47444967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return AttributeList::AT_SwiftCall; 4745176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines case AttributedType::attr_vectorcall: 4746176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines return AttributeList::AT_VectorCall; 4747414d8967e1d760ea1e19a4aca96b13777a8cf8c5Anton Korobeynikov case AttributedType::attr_pcs: 47485b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner case AttributedType::attr_pcs_vfp: 47498e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_Pcs; 475038980086c0f791e8c23cc882574f18e5b4a87db6Guy Benyei case AttributedType::attr_inteloclbicc: 475138980086c0f791e8c23cc882574f18e5b4a87db6Guy Benyei return AttributeList::AT_IntelOclBicc; 4752e8519c31a6ef853b627d557702ac1890f18ce2c9Charles Davis case AttributedType::attr_ms_abi: 4753e8519c31a6ef853b627d557702ac1890f18ce2c9Charles Davis return AttributeList::AT_MSABI; 4754e8519c31a6ef853b627d557702ac1890f18ce2c9Charles Davis case AttributedType::attr_sysv_abi: 4755e8519c31a6ef853b627d557702ac1890f18ce2c9Charles Davis return AttributeList::AT_SysVABI; 47564967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case AttributedType::attr_preserve_most: 47574967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return AttributeList::AT_PreserveMost; 47584967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case AttributedType::attr_preserve_all: 47594967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return AttributeList::AT_PreserveAll; 4760aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman case AttributedType::attr_ptr32: 4761aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman return AttributeList::AT_Ptr32; 4762aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman case AttributedType::attr_ptr64: 4763aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman return AttributeList::AT_Ptr64; 4764aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman case AttributedType::attr_sptr: 4765aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman return AttributeList::AT_SPtr; 4766aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman case AttributedType::attr_uptr: 4767aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman return AttributeList::AT_UPtr; 476887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case AttributedType::attr_nonnull: 476987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return AttributeList::AT_TypeNonNull; 477087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case AttributedType::attr_nullable: 477187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return AttributeList::AT_TypeNullable; 477287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case AttributedType::attr_null_unspecified: 477387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return AttributeList::AT_TypeNullUnspecified; 477487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case AttributedType::attr_objc_kindof: 477587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return AttributeList::AT_ObjCKindOf; 477614aa2175416f79ef17811282afbf425f87d54ebfJohn McCall } 477714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall llvm_unreachable("unexpected attribute kind!"); 477814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall} 477914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 478014aa2175416f79ef17811282afbf425f87d54ebfJohn McCallstatic void fillAttributedTypeLoc(AttributedTypeLoc TL, 4781b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar const AttributeList *attrs, 4782b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar const AttributeList *DeclAttrs = nullptr) { 4783b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // DeclAttrs and attrs cannot be both empty. 4784b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar assert((attrs || DeclAttrs) && 4785b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar "no type attributes in the expected location!"); 4786b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar 4787b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar AttributeList::Kind parsedKind = getAttrListKind(TL.getAttrKind()); 4788b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // Try to search for an attribute of matching kind in attrs list. 4789b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar while (attrs && attrs->getKind() != parsedKind) 479014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall attrs = attrs->getNext(); 4791b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar if (!attrs) { 4792b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // No matching type attribute in attrs list found. 4793b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // Try searching through C++11 attributes in the declarator attribute list. 4794b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar while (DeclAttrs && (!DeclAttrs->isCXX11Attribute() || 4795b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar DeclAttrs->getKind() != parsedKind)) 4796b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar DeclAttrs = DeclAttrs->getNext(); 4797b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar attrs = DeclAttrs; 479814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall } 479914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 4800b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar assert(attrs && "no matching type attribute in expected location!"); 4801b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar 480214aa2175416f79ef17811282afbf425f87d54ebfJohn McCall TL.setAttrNameLoc(attrs->getLoc()); 4803651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (TL.hasAttrExprOperand()) { 4804651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines assert(attrs->isArgExpr(0) && "mismatched attribute operand kind"); 4805624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman TL.setAttrExprOperand(attrs->getArgAsExpr(0)); 4806651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } else if (TL.hasAttrEnumOperand()) { 4807651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines assert((attrs->isArgIdent(0) || attrs->isArgExpr(0)) && 4808651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines "unexpected attribute operand kind"); 4809651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (attrs->isArgIdent(0)) 4810651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines TL.setAttrEnumOperandLoc(attrs->getArgAsIdent(0)->Loc); 4811651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines else 4812651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines TL.setAttrEnumOperandLoc(attrs->getArgAsExpr(0)->getExprLoc()); 4813651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 481414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 481514aa2175416f79ef17811282afbf425f87d54ebfJohn McCall // FIXME: preserve this information to here. 481614aa2175416f79ef17811282afbf425f87d54ebfJohn McCall if (TL.hasAttrOperand()) 481714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall TL.setAttrOperandParensRange(SourceRange()); 481814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall} 481914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 482051bd803fbdade51d674598ed45da3d54190a656cJohn McCallnamespace { 482151bd803fbdade51d674598ed45da3d54190a656cJohn McCall class TypeSpecLocFiller : public TypeLocVisitor<TypeSpecLocFiller> { 4822c21c7e9c2cded68f91be15be6847c9649242dc17Douglas Gregor ASTContext &Context; 482351bd803fbdade51d674598ed45da3d54190a656cJohn McCall const DeclSpec &DS; 4824f352bddf015e537350416c296dd2963524f554f9Argyrios Kyrtzidis 482551bd803fbdade51d674598ed45da3d54190a656cJohn McCall public: 482691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier TypeSpecLocFiller(ASTContext &Context, const DeclSpec &DS) 4827c21c7e9c2cded68f91be15be6847c9649242dc17Douglas Gregor : Context(Context), DS(DS) {} 4828f352bddf015e537350416c296dd2963524f554f9Argyrios Kyrtzidis 482914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall void VisitAttributedTypeLoc(AttributedTypeLoc TL) { 483014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall fillAttributedTypeLoc(TL, DS.getAttributes().getList()); 483114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall Visit(TL.getModifiedLoc()); 483214aa2175416f79ef17811282afbf425f87d54ebfJohn McCall } 483351bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitQualifiedTypeLoc(QualifiedTypeLoc TL) { 483451bd803fbdade51d674598ed45da3d54190a656cJohn McCall Visit(TL.getUnqualifiedLoc()); 483551bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 483651bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitTypedefTypeLoc(TypedefTypeLoc TL) { 483751bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setNameLoc(DS.getTypeSpecTypeLoc()); 483851bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 483951bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) { 484051bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setNameLoc(DS.getTypeSpecTypeLoc()); 48411de6a6cb485fb58b4fb100282bb3cf298eedacd9Fariborz Jahanian // FIXME. We should have DS.getTypeSpecTypeEndLoc(). But, it requires 48421de6a6cb485fb58b4fb100282bb3cf298eedacd9Fariborz Jahanian // addition field. What we have is good enough for dispay of location 48431de6a6cb485fb58b4fb100282bb3cf298eedacd9Fariborz Jahanian // of 'fixit' on interface name. 48441de6a6cb485fb58b4fb100282bb3cf298eedacd9Fariborz Jahanian TL.setNameEndLoc(DS.getLocEnd()); 4845c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } 4846c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall void VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) { 484787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TypeSourceInfo *RepTInfo = nullptr; 484887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Sema::GetTypeFromParser(DS.getRepAsType(), &RepTInfo); 484987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TL.copy(RepTInfo->getTypeLoc()); 485051bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 485154e14c4db764c0636160d26c5bbf491637c83a76John McCall void VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) { 485287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TypeSourceInfo *RepTInfo = nullptr; 485387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Sema::GetTypeFromParser(DS.getRepAsType(), &RepTInfo); 485487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TL.copy(RepTInfo->getTypeLoc()); 485551bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 4856833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall void VisitTemplateSpecializationTypeLoc(TemplateSpecializationTypeLoc TL) { 48576bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines TypeSourceInfo *TInfo = nullptr; 4858b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 4859833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall 4860833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall // If we got no declarator info from previous Sema routines, 4861833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall // just fill with the typespec loc. 4862a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall if (!TInfo) { 48630daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara TL.initialize(Context, DS.getTypeSpecTypeNameLoc()); 4864833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall return; 4865833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall } 4866833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall 4867e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara TypeLoc OldTL = TInfo->getTypeLoc(); 4868e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara if (TInfo->getType()->getAs<ElaboratedType>()) { 486939e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie ElaboratedTypeLoc ElabTL = OldTL.castAs<ElaboratedTypeLoc>(); 487039e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie TemplateSpecializationTypeLoc NamedTL = ElabTL.getNamedTypeLoc() 487139e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie .castAs<TemplateSpecializationTypeLoc>(); 4872e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara TL.copy(NamedTL); 487344ee0a710c59d8e6793189f903bae21c16814324Eli Friedman } else { 487439e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie TL.copy(OldTL.castAs<TemplateSpecializationTypeLoc>()); 487544ee0a710c59d8e6793189f903bae21c16814324Eli Friedman assert(TL.getRAngleLoc() == OldTL.castAs<TemplateSpecializationTypeLoc>().getRAngleLoc()); 487644ee0a710c59d8e6793189f903bae21c16814324Eli Friedman } 487744ee0a710c59d8e6793189f903bae21c16814324Eli Friedman 4878833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall } 4879cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall void VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) { 4880cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall assert(DS.getTypeSpecType() == DeclSpec::TST_typeofExpr); 4881cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setTypeofLoc(DS.getTypeSpecTypeLoc()); 4882cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setParensRange(DS.getTypeofParensRange()); 4883cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall } 4884cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall void VisitTypeOfTypeLoc(TypeOfTypeLoc TL) { 4885cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall assert(DS.getTypeSpecType() == DeclSpec::TST_typeofType); 4886cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setTypeofLoc(DS.getTypeSpecTypeLoc()); 4887cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setParensRange(DS.getTypeofParensRange()); 4888b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall assert(DS.getRepAsType()); 48896bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines TypeSourceInfo *TInfo = nullptr; 4890b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 4891cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setUnderlyingTInfo(TInfo); 4892cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall } 4893ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt void VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) { 4894ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt // FIXME: This holds only because we only have one unary transform. 4895ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt assert(DS.getTypeSpecType() == DeclSpec::TST_underlyingType); 4896ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt TL.setKWLoc(DS.getTypeSpecTypeLoc()); 4897ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt TL.setParensRange(DS.getTypeofParensRange()); 4898ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt assert(DS.getRepAsType()); 48996bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines TypeSourceInfo *TInfo = nullptr; 4900ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 4901ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt TL.setUnderlyingTInfo(TInfo); 4902ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } 4903ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor void VisitBuiltinTypeLoc(BuiltinTypeLoc TL) { 4904ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // By default, use the source location of the type specifier. 4905ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor TL.setBuiltinLoc(DS.getTypeSpecTypeLoc()); 4906ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor if (TL.needsExtraLocalData()) { 4907ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // Set info for the written builtin specifiers. 4908ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor TL.getWrittenBuiltinSpecs() = DS.getWrittenBuiltinSpecs(); 4909ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // Try to have a meaningful source location. 4910ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor if (TL.getWrittenSignSpec() != TSS_unspecified) 4911ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // Sign spec loc overrides the others (e.g., 'unsigned long'). 4912ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor TL.setBuiltinLoc(DS.getTypeSpecSignLoc()); 4913ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor else if (TL.getWrittenWidthSpec() != TSW_unspecified) 4914ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // Width spec loc overrides type spec loc (e.g., 'short int'). 4915ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor TL.setBuiltinLoc(DS.getTypeSpecWidthLoc()); 4916ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor } 4917ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor } 4918e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara void VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) { 4919e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara ElaboratedTypeKeyword Keyword 4920e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara = TypeWithKeyword::getKeywordForTypeSpec(DS.getTypeSpecType()); 4921253e80b019727451edb4cbcad71277fcbe05ff0eNico Weber if (DS.getTypeSpecType() == TST_typename) { 49226bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines TypeSourceInfo *TInfo = nullptr; 4923b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 4924e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara if (TInfo) { 492539e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie TL.copy(TInfo->getTypeLoc().castAs<ElaboratedTypeLoc>()); 4926e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara return; 4927e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara } 4928e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara } 492938a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara TL.setElaboratedKeywordLoc(Keyword != ETK_None 493038a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara ? DS.getTypeSpecTypeLoc() 493138a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara : SourceLocation()); 4932e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara const CXXScopeSpec& SS = DS.getTypeSpecScope(); 49339e876876afc13aa671cc11a17c19907c599b9ab9Douglas Gregor TL.setQualifierLoc(SS.getWithLocInContext(Context)); 4934e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara Visit(TL.getNextTypeLoc().getUnqualifiedLoc()); 4935e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara } 4936e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara void VisitDependentNameTypeLoc(DependentNameTypeLoc TL) { 493766581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara assert(DS.getTypeSpecType() == TST_typename); 49386bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines TypeSourceInfo *TInfo = nullptr; 493966581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 494066581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara assert(TInfo); 494139e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie TL.copy(TInfo->getTypeLoc().castAs<DependentNameTypeLoc>()); 494233500955d731c73717af52088b7fc0e7a85681e7John McCall } 494333500955d731c73717af52088b7fc0e7a85681e7John McCall void VisitDependentTemplateSpecializationTypeLoc( 494433500955d731c73717af52088b7fc0e7a85681e7John McCall DependentTemplateSpecializationTypeLoc TL) { 494566581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara assert(DS.getTypeSpecType() == TST_typename); 49466bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines TypeSourceInfo *TInfo = nullptr; 494766581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 494866581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara assert(TInfo); 494939e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie TL.copy( 495039e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie TInfo->getTypeLoc().castAs<DependentTemplateSpecializationTypeLoc>()); 49510daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara } 49520daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara void VisitTagTypeLoc(TagTypeLoc TL) { 49530daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara TL.setNameLoc(DS.getTypeSpecTypeNameLoc()); 4954e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara } 4955b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman void VisitAtomicTypeLoc(AtomicTypeLoc TL) { 49564cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // An AtomicTypeLoc can come from either an _Atomic(...) type specifier 49574cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // or an _Atomic qualifier. 49584cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith if (DS.getTypeSpecType() == DeclSpec::TST_atomic) { 49594cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith TL.setKWLoc(DS.getTypeSpecTypeLoc()); 49604cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith TL.setParensRange(DS.getTypeofParensRange()); 496191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 49626bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines TypeSourceInfo *TInfo = nullptr; 49634cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 49644cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith assert(TInfo); 49654cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith TL.getValueLoc().initializeFullCopy(TInfo->getTypeLoc()); 49664cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith } else { 49674cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith TL.setKWLoc(DS.getAtomicSpecLoc()); 49684cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // No parens, to indicate this was spelled as an _Atomic qualifier. 49694cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith TL.setParensRange(SourceRange()); 49704cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith Visit(TL.getValueLoc()); 49714cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith } 4972b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman } 4973e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara 49744967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar void VisitPipeTypeLoc(PipeTypeLoc TL) { 49754967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar TL.setKWLoc(DS.getTypeSpecTypeLoc()); 49764967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 49774967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar TypeSourceInfo *TInfo = nullptr; 49784967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 49794967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar TL.getValueLoc().initializeFullCopy(TInfo->getTypeLoc()); 49804967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 49814967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 498251bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitTypeLoc(TypeLoc TL) { 498351bd803fbdade51d674598ed45da3d54190a656cJohn McCall // FIXME: add other typespec types and change this to an assert. 4984c21c7e9c2cded68f91be15be6847c9649242dc17Douglas Gregor TL.initialize(Context, DS.getTypeSpecTypeLoc()); 498551bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 498651bd803fbdade51d674598ed45da3d54190a656cJohn McCall }; 4987eb66759e9a1d7c041354d132a14674b2d948059bArgyrios Kyrtzidis 498851bd803fbdade51d674598ed45da3d54190a656cJohn McCall class DeclaratorLocFiller : public TypeLocVisitor<DeclaratorLocFiller> { 4989b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara ASTContext &Context; 499051bd803fbdade51d674598ed45da3d54190a656cJohn McCall const DeclaratorChunk &Chunk; 4991f352bddf015e537350416c296dd2963524f554f9Argyrios Kyrtzidis 499251bd803fbdade51d674598ed45da3d54190a656cJohn McCall public: 4993b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara DeclaratorLocFiller(ASTContext &Context, const DeclaratorChunk &Chunk) 4994b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara : Context(Context), Chunk(Chunk) {} 49954adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis 499651bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitQualifiedTypeLoc(QualifiedTypeLoc TL) { 49979f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("qualified type locs not expected here!"); 499851bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 499912df246d6dea2ee1f92c186f922f1afcf499647aReid Kleckner void VisitDecayedTypeLoc(DecayedTypeLoc TL) { 500012df246d6dea2ee1f92c186f922f1afcf499647aReid Kleckner llvm_unreachable("decayed type locs not expected here!"); 500112df246d6dea2ee1f92c186f922f1afcf499647aReid Kleckner } 50024adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis 5003f85e193739c953358c865005855253af4f68a497John McCall void VisitAttributedTypeLoc(AttributedTypeLoc TL) { 5004f85e193739c953358c865005855253af4f68a497John McCall fillAttributedTypeLoc(TL, Chunk.getAttrs()); 5005f85e193739c953358c865005855253af4f68a497John McCall } 5006651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines void VisitAdjustedTypeLoc(AdjustedTypeLoc TL) { 5007651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // nothing 5008651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 500951bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) { 501051bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::BlockPointer); 501151bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setCaretLoc(Chunk.Loc); 50124adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 501351bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitPointerTypeLoc(PointerTypeLoc TL) { 501451bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Pointer); 501551bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setStarLoc(Chunk.Loc); 50164adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 501751bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) { 501851bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Pointer); 501951bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setStarLoc(Chunk.Loc); 50204adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 502151bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) { 502251bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::MemberPointer); 5023b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara const CXXScopeSpec& SS = Chunk.Mem.Scope(); 5024b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara NestedNameSpecifierLoc NNSLoc = SS.getWithLocInContext(Context); 5025b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara 5026b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara const Type* ClsTy = TL.getClass(); 5027b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara QualType ClsQT = QualType(ClsTy, 0); 5028b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara TypeSourceInfo *ClsTInfo = Context.CreateTypeSourceInfo(ClsQT, 0); 5029b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara // Now copy source location info into the type loc component. 5030b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara TypeLoc ClsTL = ClsTInfo->getTypeLoc(); 5031b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara switch (NNSLoc.getNestedNameSpecifier()->getKind()) { 5032b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::Identifier: 5033b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara assert(isa<DependentNameType>(ClsTy) && "Unexpected TypeLoc"); 5034b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara { 503539e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie DependentNameTypeLoc DNTLoc = ClsTL.castAs<DependentNameTypeLoc>(); 503638a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara DNTLoc.setElaboratedKeywordLoc(SourceLocation()); 5037b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara DNTLoc.setQualifierLoc(NNSLoc.getPrefix()); 5038b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara DNTLoc.setNameLoc(NNSLoc.getLocalBeginLoc()); 5039b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara } 5040b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara break; 5041b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara 5042b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::TypeSpec: 5043b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::TypeSpecWithTemplate: 5044b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara if (isa<ElaboratedType>(ClsTy)) { 504539e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie ElaboratedTypeLoc ETLoc = ClsTL.castAs<ElaboratedTypeLoc>(); 504638a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara ETLoc.setElaboratedKeywordLoc(SourceLocation()); 5047b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara ETLoc.setQualifierLoc(NNSLoc.getPrefix()); 5048b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara TypeLoc NamedTL = ETLoc.getNamedTypeLoc(); 5049b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara NamedTL.initializeFullCopy(NNSLoc.getTypeLoc()); 5050b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara } else { 5051b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara ClsTL.initializeFullCopy(NNSLoc.getTypeLoc()); 5052b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara } 5053b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara break; 5054b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara 5055b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::Namespace: 5056b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::NamespaceAlias: 5057b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::Global: 5058176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines case NestedNameSpecifier::Super: 5059b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara llvm_unreachable("Nested-name-specifier must name a type"); 5060b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara } 5061b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara 5062b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara // Finally fill in MemberPointerLocInfo fields. 506351bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setStarLoc(Chunk.Loc); 5064b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara TL.setClassTInfo(ClsTInfo); 50654adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 506651bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) { 506751bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Reference); 506854e14c4db764c0636160d26c5bbf491637c83a76John McCall // 'Amp' is misleading: this might have been originally 506954e14c4db764c0636160d26c5bbf491637c83a76John McCall /// spelled with AmpAmp. 507051bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setAmpLoc(Chunk.Loc); 507151bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 507251bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) { 507351bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Reference); 507451bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(!Chunk.Ref.LValueRef); 507551bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setAmpAmpLoc(Chunk.Loc); 507651bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 507751bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitArrayTypeLoc(ArrayTypeLoc TL) { 507851bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Array); 507951bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setLBracketLoc(Chunk.Loc); 508051bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setRBracketLoc(Chunk.EndLoc); 508151bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setSizeExpr(static_cast<Expr*>(Chunk.Arr.NumElts)); 508251bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 508351bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitFunctionTypeLoc(FunctionTypeLoc TL) { 508451bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Function); 5085796aa443ab5ed036f42ef33fed629e1b4b34871bAbramo Bagnara TL.setLocalRangeBegin(Chunk.Loc); 5086796aa443ab5ed036f42ef33fed629e1b4b34871bAbramo Bagnara TL.setLocalRangeEnd(Chunk.EndLoc); 508751bd803fbdade51d674598ed45da3d54190a656cJohn McCall 508851bd803fbdade51d674598ed45da3d54190a656cJohn McCall const DeclaratorChunk::FunctionTypeInfo &FTI = Chunk.Fun; 508959c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara TL.setLParenLoc(FTI.getLParenLoc()); 509059c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara TL.setRParenLoc(FTI.getRParenLoc()); 5091651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines for (unsigned i = 0, e = TL.getNumParams(), tpi = 0; i != e; ++i) { 5092651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines ParmVarDecl *Param = cast<ParmVarDecl>(FTI.Params[i].Param); 5093651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines TL.setParam(tpi++, Param); 50944adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 509551bd803fbdade51d674598ed45da3d54190a656cJohn McCall // FIXME: exception specs 50964adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 5097075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara void VisitParenTypeLoc(ParenTypeLoc TL) { 5098075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara assert(Chunk.Kind == DeclaratorChunk::Paren); 5099075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara TL.setLParenLoc(Chunk.Loc); 5100075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara TL.setRParenLoc(Chunk.EndLoc); 5101075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara } 51024967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar void VisitPipeTypeLoc(PipeTypeLoc TL) { 51034967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar assert(Chunk.Kind == DeclaratorChunk::Pipe); 51044967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar TL.setKWLoc(Chunk.Loc); 51054967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 51061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 510751bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitTypeLoc(TypeLoc TL) { 51089f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("unsupported TypeLoc kind in declarator!"); 51094adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 511051bd803fbdade51d674598ed45da3d54190a656cJohn McCall }; 51114967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar} // end anonymous namespace 51124adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis 51134cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smithstatic void fillAtomicQualLoc(AtomicTypeLoc ATL, const DeclaratorChunk &Chunk) { 51144cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith SourceLocation Loc; 51154cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith switch (Chunk.Kind) { 51164cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith case DeclaratorChunk::Function: 51174cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith case DeclaratorChunk::Array: 51184cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith case DeclaratorChunk::Paren: 51194967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: 51204cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith llvm_unreachable("cannot be _Atomic qualified"); 51214cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 51224cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith case DeclaratorChunk::Pointer: 51234cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith Loc = SourceLocation::getFromRawEncoding(Chunk.Ptr.AtomicQualLoc); 51244cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith break; 51254cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 51264cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith case DeclaratorChunk::BlockPointer: 51274cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith case DeclaratorChunk::Reference: 51284cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith case DeclaratorChunk::MemberPointer: 51294cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // FIXME: Provide a source location for the _Atomic keyword. 51304cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith break; 51314cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith } 51324cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 51334cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith ATL.setKWLoc(Loc); 51344cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith ATL.setParensRange(SourceRange()); 51354cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith} 51364cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 5137a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall/// \brief Create and instantiate a TypeSourceInfo with type source information. 513851bd803fbdade51d674598ed45da3d54190a656cJohn McCall/// 513951bd803fbdade51d674598ed45da3d54190a656cJohn McCall/// \param T QualType referring to the type as written in source code. 514005baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// 514105baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// \param ReturnTypeInfo For declarators whose return type does not show 514205baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// up in the normal place in the declaration specifiers (such as a C++ 514305baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// conversion function), this pointer will refer to a type source information 514405baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// for that return type. 5145a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCallTypeSourceInfo * 514605baacbfd67017b2724f3e0503fd23609f5d32bcDouglas GregorSema::GetTypeSourceInfoForDeclarator(Declarator &D, QualType T, 514705baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor TypeSourceInfo *ReturnTypeInfo) { 5148a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TypeSourceInfo *TInfo = Context.CreateTypeSourceInfo(T); 5149a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall UnqualTypeLoc CurrTL = TInfo->getTypeLoc().getUnqualifiedLoc(); 5150b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar const AttributeList *DeclAttrs = D.getAttributes(); 515151bd803fbdade51d674598ed45da3d54190a656cJohn McCall 5152a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // Handle parameter packs whose type is a pack expansion. 5153a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor if (isa<PackExpansionType>(T)) { 515439e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie CurrTL.castAs<PackExpansionTypeLoc>().setEllipsisLoc(D.getEllipsisLoc()); 515591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier CurrTL = CurrTL.getNextTypeLoc().getUnqualifiedLoc(); 5156a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } 515791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 51588ce35b095e8fca45e04c1bda14ed0548ce7536adSebastian Redl for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 51594cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // An AtomicTypeLoc might be produced by an atomic qualifier in this 51604cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // declarator chunk. 51614cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith if (AtomicTypeLoc ATL = CurrTL.getAs<AtomicTypeLoc>()) { 51624cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith fillAtomicQualLoc(ATL, D.getTypeObject(i)); 51634cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith CurrTL = ATL.getValueLoc().getUnqualifiedLoc(); 51644cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith } 51654cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 516639e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie while (AttributedTypeLoc TL = CurrTL.getAs<AttributedTypeLoc>()) { 5167b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar fillAttributedTypeLoc(TL, D.getTypeObject(i).getAttrs(), DeclAttrs); 516814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall CurrTL = TL.getNextTypeLoc().getUnqualifiedLoc(); 516914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall } 517014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 5171651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // FIXME: Ordering here? 5172651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines while (AdjustedTypeLoc TL = CurrTL.getAs<AdjustedTypeLoc>()) 5173651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines CurrTL = TL.getNextTypeLoc().getUnqualifiedLoc(); 5174651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 5175b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara DeclaratorLocFiller(Context, D.getTypeObject(i)).Visit(CurrTL); 517651bd803fbdade51d674598ed45da3d54190a656cJohn McCall CurrTL = CurrTL.getNextTypeLoc().getUnqualifiedLoc(); 51774adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 517891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 5179b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall // If we have different source information for the return type, use 5180b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall // that. This really only applies to C++ conversion functions. 5181b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ReturnTypeInfo) { 518205baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor TypeLoc TL = ReturnTypeInfo->getTypeLoc(); 518305baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor assert(TL.getFullDataSize() == CurrTL.getFullDataSize()); 518405baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor memcpy(CurrTL.getOpaqueData(), TL.getOpaqueData(), TL.getFullDataSize()); 5185b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall } else { 5186c21c7e9c2cded68f91be15be6847c9649242dc17Douglas Gregor TypeSpecLocFiller(Context, D.getDeclSpec()).Visit(CurrTL); 518705baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor } 518891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 5189a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall return TInfo; 51904adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis} 51914adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis 5192a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall/// \brief Create a LocInfoType to hold the given QualType and TypeSourceInfo. 5193b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCallParsedType Sema::CreateParsedType(QualType T, TypeSourceInfo *TInfo) { 51941bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis // FIXME: LocInfoTypes are "transient", only needed for passing to/from Parser 51951bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis // and Sema during declaration parsing. Try deallocating/caching them when 51961bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis // it's appropriate, instead of allocating them and keeping them around. 519791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier LocInfoType *LocT = (LocInfoType*)BumpAlloc.Allocate(sizeof(LocInfoType), 5198eb0eb49ce5f5294902769702b9322e42e89e972eDouglas Gregor TypeAlignment); 5199a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall new (LocT) LocInfoType(T, TInfo); 52001bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis assert(LocT->getTypeClass() != T->getTypeClass() && 52011bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis "LocInfoType's TypeClass conflicts with an existing Type class"); 5202b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall return ParsedType::make(QualType(LocT, 0)); 52031bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis} 52041bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis 52051bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidisvoid LocInfoType::getAsStringInternal(std::string &Str, 52061bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis const PrintingPolicy &Policy) const { 5207b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("LocInfoType leaked into the type system; an opaque TypeTy*" 520835d44e5673e772d1cc7eab66818de8d9796b89caArgyrios Kyrtzidis " was used directly instead of getting the QualType through" 520935d44e5673e772d1cc7eab66818de8d9796b89caArgyrios Kyrtzidis " GetTypeFromParser"); 52101bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis} 52111bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis 5212f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCallTypeResult Sema::ActOnTypeName(Scope *S, Declarator &D) { 52135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.7.6: Type names have no identifier. This is already validated by 52145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the parser. 52156bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines assert(D.getIdentifier() == nullptr && 52166bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines "Type name should have no identifier!"); 52171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5218d3880f8458bb6a03818ee01f758c32f945de3eaaArgyrios Kyrtzidis TypeSourceInfo *TInfo = GetTypeForDeclarator(D, S); 5219bf1a028246d884a540aeafa38e89be59a269b072John McCall QualType T = TInfo->getType(); 52205153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner if (D.isInvalidType()) 5221809070a886684cb5b92eb0e00a6581ab1fa6b17aDouglas Gregor return true; 52225912a3544e438a92832b8c52c13f48d4f54795dcSteve Naroff 5223e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall // Make sure there are no unused decl attributes on the declarator. 5224cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall // We don't want to do this for ObjC parameters because we're going 5225cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall // to apply them to the actual parameter declaration. 52266b3d3e54c003b03f16e235ad2ff49e95587bbf92Richard Smith // Likewise, we don't want to do this for alias declarations, because 52276b3d3e54c003b03f16e235ad2ff49e95587bbf92Richard Smith // we are actually going to build a declaration from this eventually. 52286b3d3e54c003b03f16e235ad2ff49e95587bbf92Richard Smith if (D.getContext() != Declarator::ObjCParameterContext && 52296b3d3e54c003b03f16e235ad2ff49e95587bbf92Richard Smith D.getContext() != Declarator::AliasDeclContext && 52306b3d3e54c003b03f16e235ad2ff49e95587bbf92Richard Smith D.getContext() != Declarator::AliasTemplateContext) 5231cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall checkUnusedDeclAttributes(D); 5232e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall 52334e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus) { 5234402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor // Check that there are no default arguments (C++ only). 52356d6eb57225b53fb627c565861d1d0e90645400d1Douglas Gregor CheckExtraCXXDefaultArguments(D); 5236402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor } 5237402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor 5238b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall return CreateParsedType(T, TInfo); 52395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 52405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 5241e97179c675b341927807c718be215c8d1aab8acbDouglas GregorParsedType Sema::ActOnObjCInstanceType(SourceLocation Loc) { 5242e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor QualType T = Context.getObjCInstanceType(); 5243e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor TypeSourceInfo *TInfo = Context.getTrivialTypeSourceInfo(T, Loc); 5244e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor return CreateParsedType(T, TInfo); 5245e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor} 5246e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor 5247c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner//===----------------------------------------------------------------------===// 5248c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner// Type Attribute Processing 5249c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner//===----------------------------------------------------------------------===// 5250232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner 5251232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner/// HandleAddressSpaceTypeAttribute - Process an address_space attribute on the 5252c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner/// specified type. The attribute contains 1 argument, the id of the address 5253c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner/// space for the type. 52541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpstatic void HandleAddressSpaceTypeAttribute(QualType &Type, 5255c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner const AttributeList &Attr, Sema &S){ 52560953e767ff7817f97b3ab20896b229891eeff45bJohn McCall 5257232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner // If this type is already address space qualified, reject it. 525829e3ef8df84da298e7553a84276af4909ff6e9ebPeter Collingbourne // ISO/IEC TR 18037 S5.3 (amending C99 6.7.3): "No type shall be qualified by 525929e3ef8df84da298e7553a84276af4909ff6e9ebPeter Collingbourne // qualifiers for two or more different address spaces." 5260232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner if (Type.getAddressSpace()) { 5261c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_address_multiple_qualifiers); 5262e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 5263c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner return; 5264232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner } 52651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5266020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne // ISO/IEC TR 18037 S5.3 (amending C99 6.7.3): "A function type shall not be 5267020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne // qualified by an address-space qualifier." 5268020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne if (Type->isFunctionType()) { 5269020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne S.Diag(Attr.getLoc(), diag::err_attribute_address_function_type); 5270020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne Attr.setInvalid(); 5271020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne return; 5272020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne } 5273020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne 5274651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines unsigned ASIdx; 5275651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (Attr.getKind() == AttributeList::AT_AddressSpace) { 5276651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // Check the attribute arguments. 5277651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (Attr.getNumArgs() != 1) { 5278651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) 5279651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines << Attr.getName() << 1; 5280651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines Attr.setInvalid(); 5281651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return; 5282651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 5283651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines Expr *ASArgExpr = static_cast<Expr *>(Attr.getArgAsExpr(0)); 5284651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines llvm::APSInt addrSpace(32); 5285651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (ASArgExpr->isTypeDependent() || ASArgExpr->isValueDependent() || 5286651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines !ASArgExpr->isIntegerConstantExpr(addrSpace, S.Context)) { 5287651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines S.Diag(Attr.getLoc(), diag::err_attribute_argument_type) 5288651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines << Attr.getName() << AANT_ArgumentIntegerConstant 5289efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall << ASArgExpr->getSourceRange(); 5290e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 5291efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall return; 5292efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall } 5293efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall 5294651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // Bounds checking. 5295651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (addrSpace.isSigned()) { 5296651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (addrSpace.isNegative()) { 5297651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines S.Diag(Attr.getLoc(), diag::err_attribute_address_space_negative) 5298651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines << ASArgExpr->getSourceRange(); 5299651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines Attr.setInvalid(); 5300651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return; 5301651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 5302651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines addrSpace.setIsSigned(false); 5303651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 5304651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines llvm::APSInt max(addrSpace.getBitWidth()); 5305651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines max = Qualifiers::MaxAddressSpace; 5306651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (addrSpace > max) { 5307651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines S.Diag(Attr.getLoc(), diag::err_attribute_address_space_too_high) 5308651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines << int(Qualifiers::MaxAddressSpace) << ASArgExpr->getSourceRange(); 5309651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines Attr.setInvalid(); 5310651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return; 5311651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 5312651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines ASIdx = static_cast<unsigned>(addrSpace.getZExtValue()); 5313651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } else { 5314651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // The keyword-based type attributes imply which address space to use. 5315651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines switch (Attr.getKind()) { 5316651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines case AttributeList::AT_OpenCLGlobalAddressSpace: 5317651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines ASIdx = LangAS::opencl_global; break; 5318651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines case AttributeList::AT_OpenCLLocalAddressSpace: 5319651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines ASIdx = LangAS::opencl_local; break; 5320651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines case AttributeList::AT_OpenCLConstantAddressSpace: 5321651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines ASIdx = LangAS::opencl_constant; break; 53220e2c34f92f00628d48968dfea096d36381f494cbStephen Hines case AttributeList::AT_OpenCLGenericAddressSpace: 53230e2c34f92f00628d48968dfea096d36381f494cbStephen Hines ASIdx = LangAS::opencl_generic; break; 5324651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines default: 5325651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines assert(Attr.getKind() == AttributeList::AT_OpenCLPrivateAddressSpace); 5326651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines ASIdx = 0; break; 5327651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 5328651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 5329651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 5330f11284ac87daa613bc7b30db9f54bd716d123222Fariborz Jahanian Type = S.Context.getAddrSpaceQualType(Type, ASIdx); 5331c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner} 5332c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner 5333d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall/// Does this type have a "direct" ownership qualifier? That is, 5334d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall/// is it written like "__strong id", as opposed to something like 5335d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall/// "typeof(foo)", where that happens to be strong? 5336d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCallstatic bool hasDirectOwnershipQualifier(QualType type) { 5337d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // Fast path: no qualifier at all. 5338d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall assert(type.getQualifiers().hasObjCLifetime()); 5339d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 5340d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall while (true) { 5341d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // __strong id 5342d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (const AttributedType *attr = dyn_cast<AttributedType>(type)) { 5343d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (attr->getAttrKind() == AttributedType::attr_objc_ownership) 5344d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall return true; 5345d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 5346d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall type = attr->getModifiedType(); 5347d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 5348d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // X *__strong (...) 5349d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } else if (const ParenType *paren = dyn_cast<ParenType>(type)) { 5350d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall type = paren->getInnerType(); 535191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 5352d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // That's it for things we want to complain about. In particular, 5353d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // we do not want to look through typedefs, typeof(expr), 5354d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // typeof(type), or any other way that the type is somehow 5355d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // abstracted. 5356d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } else { 535791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 5358d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall return false; 5359d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 5360d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 5361d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall} 5362d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 5363b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis/// handleObjCOwnershipTypeAttr - Process an objc_ownership 5364f85e193739c953358c865005855253af4f68a497John McCall/// attribute on the specified type. 5365f85e193739c953358c865005855253af4f68a497John McCall/// 5366f85e193739c953358c865005855253af4f68a497John McCall/// Returns 'true' if the attribute was handled. 5367b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidisstatic bool handleObjCOwnershipTypeAttr(TypeProcessingState &state, 5368f85e193739c953358c865005855253af4f68a497John McCall AttributeList &attr, 5369f85e193739c953358c865005855253af4f68a497John McCall QualType &type) { 5370e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis bool NonObjCPointer = false; 5371e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis 5372dc7a4f5d7a7e3b60d4dc4a80338d7a2728540998Richard Smith if (!type->isDependentType() && !type->isUndeducedType()) { 5373e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis if (const PointerType *ptr = type->getAs<PointerType>()) { 5374e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis QualType pointee = ptr->getPointeeType(); 5375e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis if (pointee->isObjCRetainableType() || pointee->isPointerType()) 5376e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis return false; 5377e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis // It is important not to lose the source info that there was an attribute 5378e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis // applied to non-objc pointer. We will create an attributed type but 5379e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis // its type will be the same as the original type. 5380e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis NonObjCPointer = true; 5381e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } else if (!type->isObjCRetainableType()) { 5382e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis return false; 5383e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } 5384b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 5385b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // Don't accept an ownership attribute in the declspec if it would 5386b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // just be the return type of a block pointer. 5387b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall if (state.isProcessingDeclSpec()) { 5388b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall Declarator &D = state.getDeclarator(); 538987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (maybeMovePastReturnType(D, D.getNumTypeObjects(), 539087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /*onlyBlockPointers=*/true)) 5391b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall return false; 5392b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 5393e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } 5394f85e193739c953358c865005855253af4f68a497John McCall 5395f85e193739c953358c865005855253af4f68a497John McCall Sema &S = state.getSema(); 5396440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis SourceLocation AttrLoc = attr.getLoc(); 5397440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis if (AttrLoc.isMacroID()) 5398440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis AttrLoc = S.getSourceManager().getImmediateExpansionRange(AttrLoc).first; 5399f85e193739c953358c865005855253af4f68a497John McCall 5400624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman if (!attr.isArgIdent(0)) { 54013cd6feb87a62fb52c31cbc83655d76ace020513fAaron Ballman S.Diag(AttrLoc, diag::err_attribute_argument_type) 54023cd6feb87a62fb52c31cbc83655d76ace020513fAaron Ballman << attr.getName() << AANT_ArgumentString; 5403f85e193739c953358c865005855253af4f68a497John McCall attr.setInvalid(); 5404f85e193739c953358c865005855253af4f68a497John McCall return true; 5405f85e193739c953358c865005855253af4f68a497John McCall } 5406f85e193739c953358c865005855253af4f68a497John McCall 5407624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman IdentifierInfo *II = attr.getArgAsIdent(0)->Ident; 5408f85e193739c953358c865005855253af4f68a497John McCall Qualifiers::ObjCLifetime lifetime; 5409624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman if (II->isStr("none")) 5410f85e193739c953358c865005855253af4f68a497John McCall lifetime = Qualifiers::OCL_ExplicitNone; 5411624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman else if (II->isStr("strong")) 5412f85e193739c953358c865005855253af4f68a497John McCall lifetime = Qualifiers::OCL_Strong; 5413624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman else if (II->isStr("weak")) 5414f85e193739c953358c865005855253af4f68a497John McCall lifetime = Qualifiers::OCL_Weak; 5415624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman else if (II->isStr("autoreleasing")) 5416f85e193739c953358c865005855253af4f68a497John McCall lifetime = Qualifiers::OCL_Autoreleasing; 5417f85e193739c953358c865005855253af4f68a497John McCall else { 5418440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis S.Diag(AttrLoc, diag::warn_attribute_type_not_supported) 5419d068607c136298bec0891d750389a55bac9f5c98Aaron Ballman << attr.getName() << II; 5420f85e193739c953358c865005855253af4f68a497John McCall attr.setInvalid(); 5421f85e193739c953358c865005855253af4f68a497John McCall return true; 5422f85e193739c953358c865005855253af4f68a497John McCall } 5423f85e193739c953358c865005855253af4f68a497John McCall 542487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Just ignore lifetime attributes other than __weak and __unsafe_unretained 542587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // outside of ARC mode. 542687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!S.getLangOpts().ObjCAutoRefCount && 542787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar lifetime != Qualifiers::OCL_Weak && 542887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar lifetime != Qualifiers::OCL_ExplicitNone) { 542987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return true; 543087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 543187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 5432d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall SplitQualType underlyingType = type.split(); 5433d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 5434d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // Check for redundant/conflicting ownership qualifiers. 5435d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (Qualifiers::ObjCLifetime previousLifetime 5436d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall = type.getQualifiers().getObjCLifetime()) { 5437d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // If it's written directly, that's an error. 5438d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (hasDirectOwnershipQualifier(type)) { 5439d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall S.Diag(AttrLoc, diag::err_attr_objc_ownership_redundant) 5440d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall << type; 5441d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall return true; 5442d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 5443d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 5444d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // Otherwise, if the qualifiers actually conflict, pull sugar off 54454967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // and remove the ObjCLifetime qualifiers. 5446d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (previousLifetime != lifetime) { 54474967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // It's possible to have multiple local ObjCLifetime qualifiers. We 54484967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // can't stop after we reach a type that is directly qualified. 54494967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar const Type *prevTy = nullptr; 54504967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar while (!prevTy || prevTy != underlyingType.Ty) { 54514967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar prevTy = underlyingType.Ty; 5452d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall underlyingType = underlyingType.getSingleStepDesugaredType(); 5453d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 5454d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall underlyingType.Quals.removeObjCLifetime(); 5455d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 5456d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 5457d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 5458d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall underlyingType.Quals.addObjCLifetime(lifetime); 5459f85e193739c953358c865005855253af4f68a497John McCall 5460e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis if (NonObjCPointer) { 5461e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis StringRef name = attr.getName()->getName(); 5462e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis switch (lifetime) { 5463e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_None: 5464e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_ExplicitNone: 5465e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis break; 5466e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_Strong: name = "__strong"; break; 5467e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_Weak: name = "__weak"; break; 5468e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_Autoreleasing: name = "__autoreleasing"; break; 5469e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } 5470fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman S.Diag(AttrLoc, diag::warn_type_attribute_wrong_type) << name 5471fe6dec6efaf860ed3eb20ee13267f35129f7747aAaron Ballman << TDS_ObjCObjOrBlock << type; 5472e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } 5473e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis 547487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Don't actually add the __unsafe_unretained qualifier in non-ARC files, 547587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // because having both 'T' and '__unsafe_unretained T' exist in the type 547687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // system causes unfortunate widespread consistency problems. (For example, 547787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // they're not considered compatible types, and we mangle them identicially 547887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // as template arguments.) These problems are all individually fixable, 547987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // but it's easier to just not add the qualifier and instead sniff it out 548087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // in specific places using isObjCInertUnsafeUnretainedType(). 548187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // 548287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Doing this does means we miss some trivial consistency checks that 548387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // would've triggered in ARC, but that's better than trying to solve all 548487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // the coexistence problems with __unsafe_unretained. 548587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!S.getLangOpts().ObjCAutoRefCount && 548687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar lifetime == Qualifiers::OCL_ExplicitNone) { 548787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type = S.Context.getAttributedType( 548887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar AttributedType::attr_objc_inert_unsafe_unretained, 548987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type, type); 549087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return true; 549187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 549287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 5493f85e193739c953358c865005855253af4f68a497John McCall QualType origType = type; 5494e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis if (!NonObjCPointer) 5495d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall type = S.Context.getQualifiedType(underlyingType); 5496f85e193739c953358c865005855253af4f68a497John McCall 5497f85e193739c953358c865005855253af4f68a497John McCall // If we have a valid source location for the attribute, use an 5498f85e193739c953358c865005855253af4f68a497John McCall // AttributedType instead. 5499440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis if (AttrLoc.isValid()) 5500b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis type = S.Context.getAttributedType(AttributedType::attr_objc_ownership, 5501f85e193739c953358c865005855253af4f68a497John McCall origType, type); 5502f85e193739c953358c865005855253af4f68a497John McCall 550387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar auto diagnoseOrDelay = [](Sema &S, SourceLocation loc, 550487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar unsigned diagnostic, QualType type) { 5505f85e193739c953358c865005855253af4f68a497John McCall if (S.DelayedDiagnostics.shouldDelayDiagnostics()) { 5506f85e193739c953358c865005855253af4f68a497John McCall S.DelayedDiagnostics.add( 5507440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis sema::DelayedDiagnostic::makeForbiddenType( 550887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.getSourceManager().getExpansionLoc(loc), 550987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar diagnostic, type, /*ignored*/ 0)); 5510f85e193739c953358c865005855253af4f68a497John McCall } else { 551187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(loc, diagnostic); 5512f85e193739c953358c865005855253af4f68a497John McCall } 551387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar }; 551487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 551587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Sometimes, __weak isn't allowed. 551687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (lifetime == Qualifiers::OCL_Weak && 551787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar !S.getLangOpts().ObjCWeak && !NonObjCPointer) { 551887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 551987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Use a specialized diagnostic if the runtime just doesn't support them. 552087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar unsigned diagnostic = 552187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar (S.getLangOpts().ObjCWeakRuntime ? diag::err_arc_weak_disabled 552287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar : diag::err_arc_weak_no_runtime); 552387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 552487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // In any case, delay the diagnostic until we know what we're parsing. 552587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar diagnoseOrDelay(S, AttrLoc, diagnostic, type); 5526f85e193739c953358c865005855253af4f68a497John McCall 5527f85e193739c953358c865005855253af4f68a497John McCall attr.setInvalid(); 5528f85e193739c953358c865005855253af4f68a497John McCall return true; 5529f85e193739c953358c865005855253af4f68a497John McCall } 553091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 553191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // Forbid __weak for class objects marked as 5532742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian // objc_arc_weak_reference_unavailable 5533742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian if (lifetime == Qualifiers::OCL_Weak) { 5534b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall if (const ObjCObjectPointerType *ObjT = 5535b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall type->getAs<ObjCObjectPointerType>()) { 55364e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith if (ObjCInterfaceDecl *Class = ObjT->getInterfaceDecl()) { 55374e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith if (Class->isArcWeakrefUnavailable()) { 553887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(AttrLoc, diag::err_arc_unsupported_weak_class); 553987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(ObjT->getInterfaceDecl()->getLocation(), 554087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar diag::note_class_declared); 55414e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith } 5542742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian } 5543742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian } 5544742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian } 554591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 5546f85e193739c953358c865005855253af4f68a497John McCall return true; 5547f85e193739c953358c865005855253af4f68a497John McCall} 5548f85e193739c953358c865005855253af4f68a497John McCall 5549711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// handleObjCGCTypeAttr - Process the __attribute__((objc_gc)) type 5550711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// attribute on the specified type. Returns true to indicate that 5551711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// the attribute was handled, false to indicate that the type does 5552711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// not permit the attribute. 5553711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleObjCGCTypeAttr(TypeProcessingState &state, 5554711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 5555711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &type) { 5556711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Sema &S = state.getSema(); 5557711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 5558711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Delay if this isn't some kind of pointer. 5559711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!type->isPointerType() && 5560711c52bb20d0c69063b52a99826fb7d2835501f1John McCall !type->isObjCObjectPointerType() && 5561711c52bb20d0c69063b52a99826fb7d2835501f1John McCall !type->isBlockPointerType()) 5562711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return false; 5563711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 5564711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (type.getObjCGCAttr() != Qualifiers::GCNone) { 5565711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::err_attribute_multiple_objc_gc); 5566711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 5567711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 5568d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian } 5569624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman 5570d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian // Check the attribute arguments. 5571624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman if (!attr.isArgIdent(0)) { 55723cd6feb87a62fb52c31cbc83655d76ace020513fAaron Ballman S.Diag(attr.getLoc(), diag::err_attribute_argument_type) 55733cd6feb87a62fb52c31cbc83655d76ace020513fAaron Ballman << attr.getName() << AANT_ArgumentString; 5574711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 5575711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 5576ba372b85524f712e5b97a176f6ce0197d365835dFariborz Jahanian } 55770953e767ff7817f97b3ab20896b229891eeff45bJohn McCall Qualifiers::GC GCAttr; 5578624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman if (attr.getNumArgs() > 1) { 5579baec77865b3ce64bb942dddc5dc2fada84ce5099Aaron Ballman S.Diag(attr.getLoc(), diag::err_attribute_wrong_number_arguments) 5580baec77865b3ce64bb942dddc5dc2fada84ce5099Aaron Ballman << attr.getName() << 1; 5581711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 5582711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 5583d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian } 5584624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman 5585624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman IdentifierInfo *II = attr.getArgAsIdent(0)->Ident; 5586624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman if (II->isStr("weak")) 55870953e767ff7817f97b3ab20896b229891eeff45bJohn McCall GCAttr = Qualifiers::Weak; 5588624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman else if (II->isStr("strong")) 55890953e767ff7817f97b3ab20896b229891eeff45bJohn McCall GCAttr = Qualifiers::Strong; 5590d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian else { 5591711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::warn_attribute_type_not_supported) 5592d068607c136298bec0891d750389a55bac9f5c98Aaron Ballman << attr.getName() << II; 5593711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 5594711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 5595d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian } 55961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 559714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall QualType origType = type; 559814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall type = S.Context.getObjCGCQualType(origType, GCAttr); 559914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 560014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall // Make an attributed type to preserve the source information. 560114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall if (attr.getLoc().isValid()) 560214aa2175416f79ef17811282afbf425f87d54ebfJohn McCall type = S.Context.getAttributedType(AttributedType::attr_objc_gc, 560314aa2175416f79ef17811282afbf425f87d54ebfJohn McCall origType, type); 560414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 5605711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 5606d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian} 5607d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian 5608579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendlingnamespace { 5609579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling /// A helper class to unwrap a type down to a function for the 5610579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling /// purposes of applying attributes there. 5611579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling /// 5612579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling /// Use: 5613579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling /// FunctionTypeUnwrapper unwrapped(SemaRef, T); 5614579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling /// if (unwrapped.isFunctionType()) { 5615579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling /// const FunctionType *fn = unwrapped.get(); 5616579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling /// // change fn somehow 5617579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling /// T = unwrapped.wrap(fn); 5618579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling /// } 5619579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling struct FunctionTypeUnwrapper { 5620579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling enum WrapKind { 5621579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling Desugar, 56224967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Attributed, 5623579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling Parens, 5624579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling Pointer, 5625579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling BlockPointer, 5626579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling Reference, 5627579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling MemberPointer 5628579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling }; 5629579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5630579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling QualType Original; 5631579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling const FunctionType *Fn; 5632579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling SmallVector<unsigned char /*WrapKind*/, 8> Stack; 5633579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5634579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling FunctionTypeUnwrapper(Sema &S, QualType T) : Original(T) { 5635579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling while (true) { 5636579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling const Type *Ty = T.getTypePtr(); 5637579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling if (isa<FunctionType>(Ty)) { 5638579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling Fn = cast<FunctionType>(Ty); 5639579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling return; 5640579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } else if (isa<ParenType>(Ty)) { 5641579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling T = cast<ParenType>(Ty)->getInnerType(); 5642579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling Stack.push_back(Parens); 5643579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } else if (isa<PointerType>(Ty)) { 5644579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling T = cast<PointerType>(Ty)->getPointeeType(); 5645579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling Stack.push_back(Pointer); 5646579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } else if (isa<BlockPointerType>(Ty)) { 5647579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling T = cast<BlockPointerType>(Ty)->getPointeeType(); 5648579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling Stack.push_back(BlockPointer); 5649579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } else if (isa<MemberPointerType>(Ty)) { 5650579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling T = cast<MemberPointerType>(Ty)->getPointeeType(); 5651579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling Stack.push_back(MemberPointer); 5652579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } else if (isa<ReferenceType>(Ty)) { 5653579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling T = cast<ReferenceType>(Ty)->getPointeeType(); 5654579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling Stack.push_back(Reference); 56554967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } else if (isa<AttributedType>(Ty)) { 56564967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar T = cast<AttributedType>(Ty)->getEquivalentType(); 56574967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Stack.push_back(Attributed); 5658579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } else { 5659579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling const Type *DTy = Ty->getUnqualifiedDesugaredType(); 5660579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling if (Ty == DTy) { 56616bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines Fn = nullptr; 5662579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling return; 5663579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } 5664579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5665579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling T = QualType(DTy, 0); 5666579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling Stack.push_back(Desugar); 5667579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } 5668579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } 5669579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } 5670579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 56716bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines bool isFunctionType() const { return (Fn != nullptr); } 5672579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling const FunctionType *get() const { return Fn; } 5673579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5674579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling QualType wrap(Sema &S, const FunctionType *New) { 5675579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling // If T wasn't modified from the unwrapped type, do nothing. 5676579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling if (New == get()) return Original; 5677579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5678579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling Fn = New; 5679579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling return wrap(S.Context, Original, 0); 5680579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } 5681579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5682579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling private: 5683579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling QualType wrap(ASTContext &C, QualType Old, unsigned I) { 5684579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling if (I == Stack.size()) 5685579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling return C.getQualifiedType(Fn, Old.getQualifiers()); 5686579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5687579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling // Build up the inner type, applying the qualifiers from the old 5688579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling // type to the new type. 5689579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling SplitQualType SplitOld = Old.split(); 5690579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5691579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling // As a special case, tail-recurse if there are no qualifiers. 5692579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling if (SplitOld.Quals.empty()) 5693579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling return wrap(C, SplitOld.Ty, I); 5694579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling return C.getQualifiedType(wrap(C, SplitOld.Ty, I), SplitOld.Quals); 5695579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } 5696579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5697579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling QualType wrap(ASTContext &C, const Type *Old, unsigned I) { 5698579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling if (I == Stack.size()) return QualType(Fn, 0); 5699579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5700579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling switch (static_cast<WrapKind>(Stack[I++])) { 5701579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling case Desugar: 5702579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling // This is the point at which we potentially lose source 5703579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling // information. 5704579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling return wrap(C, Old->getUnqualifiedDesugaredType(), I); 5705579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 57064967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case Attributed: 57074967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return wrap(C, cast<AttributedType>(Old)->getEquivalentType(), I); 57084967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 5709579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling case Parens: { 5710579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling QualType New = wrap(C, cast<ParenType>(Old)->getInnerType(), I); 5711579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling return C.getParenType(New); 5712579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } 5713579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5714579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling case Pointer: { 5715579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling QualType New = wrap(C, cast<PointerType>(Old)->getPointeeType(), I); 5716579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling return C.getPointerType(New); 5717579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } 5718579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5719579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling case BlockPointer: { 5720579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling QualType New = wrap(C, cast<BlockPointerType>(Old)->getPointeeType(),I); 5721579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling return C.getBlockPointerType(New); 5722579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } 5723579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5724579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling case MemberPointer: { 5725579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling const MemberPointerType *OldMPT = cast<MemberPointerType>(Old); 5726579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling QualType New = wrap(C, OldMPT->getPointeeType(), I); 5727579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling return C.getMemberPointerType(New, OldMPT->getClass()); 5728579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } 5729579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5730579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling case Reference: { 5731579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling const ReferenceType *OldRef = cast<ReferenceType>(Old); 5732579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling QualType New = wrap(C, OldRef->getPointeeType(), I); 5733579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling if (isa<LValueReferenceType>(OldRef)) 5734579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling return C.getLValueReferenceType(New, OldRef->isSpelledAsLValue()); 5735579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling else 5736579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling return C.getRValueReferenceType(New); 5737579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } 5738579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } 5739579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5740579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling llvm_unreachable("unknown wrapping kind"); 5741579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling } 5742579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling }; 57434967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar} // end anonymous namespace 5744579d45ff5f92c4f5e31213e31490acdc5bcc5567Bill Wendling 5745aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballmanstatic bool handleMSPointerTypeQualifierAttr(TypeProcessingState &State, 5746aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman AttributeList &Attr, 5747aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman QualType &Type) { 5748aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman Sema &S = State.getSema(); 5749aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman 5750aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman AttributeList::Kind Kind = Attr.getKind(); 5751aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman QualType Desugared = Type; 5752aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman const AttributedType *AT = dyn_cast<AttributedType>(Type); 5753aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman while (AT) { 5754aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman AttributedType::Kind CurAttrKind = AT->getAttrKind(); 5755aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman 5756aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman // You cannot specify duplicate type attributes, so if the attribute has 5757aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman // already been applied, flag it. 5758aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman if (getAttrListKind(CurAttrKind) == Kind) { 5759aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman S.Diag(Attr.getLoc(), diag::warn_duplicate_attribute_exact) 5760aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman << Attr.getName(); 5761aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman return true; 5762aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman } 5763aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman 5764aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman // You cannot have both __sptr and __uptr on the same type, nor can you 5765aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman // have __ptr32 and __ptr64. 5766aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman if ((CurAttrKind == AttributedType::attr_ptr32 && 5767aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman Kind == AttributeList::AT_Ptr64) || 5768aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman (CurAttrKind == AttributedType::attr_ptr64 && 5769aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman Kind == AttributeList::AT_Ptr32)) { 5770aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman S.Diag(Attr.getLoc(), diag::err_attributes_are_not_compatible) 5771aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman << "'__ptr32'" << "'__ptr64'"; 5772aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman return true; 5773aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman } else if ((CurAttrKind == AttributedType::attr_sptr && 5774aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman Kind == AttributeList::AT_UPtr) || 5775aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman (CurAttrKind == AttributedType::attr_uptr && 5776aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman Kind == AttributeList::AT_SPtr)) { 5777aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman S.Diag(Attr.getLoc(), diag::err_attributes_are_not_compatible) 5778aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman << "'__sptr'" << "'__uptr'"; 5779aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman return true; 5780aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman } 5781aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman 5782aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman Desugared = AT->getEquivalentType(); 5783aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman AT = dyn_cast<AttributedType>(Desugared); 5784aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman } 5785aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman 5786aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman // Pointer type qualifiers can only operate on pointer types, but not 5787aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman // pointer-to-member types. 5788aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman if (!isa<PointerType>(Desugared)) { 578987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (Type->isMemberPointerType()) 579087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(Attr.getLoc(), diag::err_attribute_no_member_pointers) 579187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << Attr.getName(); 579287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar else 579387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar S.Diag(Attr.getLoc(), diag::err_attribute_pointers_only) 579487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << Attr.getName() << 0; 5795aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman return true; 5796aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman } 5797aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman 5798aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman AttributedType::Kind TAK; 5799aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman switch (Kind) { 5800aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman default: llvm_unreachable("Unknown attribute kind"); 5801aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman case AttributeList::AT_Ptr32: TAK = AttributedType::attr_ptr32; break; 5802aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman case AttributeList::AT_Ptr64: TAK = AttributedType::attr_ptr64; break; 5803aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman case AttributeList::AT_SPtr: TAK = AttributedType::attr_sptr; break; 5804aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman case AttributeList::AT_UPtr: TAK = AttributedType::attr_uptr; break; 5805aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman } 5806aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman 5807aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman Type = S.Context.getAttributedType(TAK, Type, Type); 5808aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman return false; 5809aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman} 5810aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman 581187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarbool Sema::checkNullabilityTypeSpecifier(QualType &type, 581287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar NullabilityKind nullability, 581387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation nullabilityLoc, 581487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool isContextSensitive) { 581587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // We saw a nullability type specifier. If this is the first one for 581687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // this file, note that. 581787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar FileID file = getNullabilityCompletenessCheckFileID(*this, nullabilityLoc); 581887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!file.isInvalid()) { 581987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar FileNullability &fileNullability = NullabilityMap[file]; 582087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!fileNullability.SawTypeNullability) { 582187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If we have already seen a pointer declarator without a nullability 582287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // annotation, complain about it. 582387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (fileNullability.PointerLoc.isValid()) { 582487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Diag(fileNullability.PointerLoc, diag::warn_nullability_missing) 582587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << static_cast<unsigned>(fileNullability.PointerKind); 582687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 582787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 582887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar fileNullability.SawTypeNullability = true; 582987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 583087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 583187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 583287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Check for existing nullability attributes on the type. 583387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar QualType desugared = type; 583487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar while (auto attributed = dyn_cast<AttributedType>(desugared.getTypePtr())) { 583587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Check whether there is already a null 583687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto existingNullability = attributed->getImmediateNullability()) { 583787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Duplicated nullability. 583887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (nullability == *existingNullability) { 583987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Diag(nullabilityLoc, diag::warn_nullability_duplicate) 584087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << DiagNullabilityKind(nullability, isContextSensitive) 584187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << FixItHint::CreateRemoval(nullabilityLoc); 584287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 584387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 584487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 584587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 584687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Conflicting nullability. 584787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Diag(nullabilityLoc, diag::err_nullability_conflicting) 584887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << DiagNullabilityKind(nullability, isContextSensitive) 584987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << DiagNullabilityKind(*existingNullability, false); 585087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return true; 585187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 585287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 585387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar desugared = attributed->getModifiedType(); 585487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 585587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 585687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If there is already a different nullability specifier, complain. 585787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // This (unlike the code above) looks through typedefs that might 585887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // have nullability specifiers on them, which means we cannot 585987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // provide a useful Fix-It. 586087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto existingNullability = desugared->getNullability(Context)) { 586187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (nullability != *existingNullability) { 586287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Diag(nullabilityLoc, diag::err_nullability_conflicting) 586387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << DiagNullabilityKind(nullability, isContextSensitive) 586487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << DiagNullabilityKind(*existingNullability, false); 586587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 586687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Try to find the typedef with the existing nullability specifier. 586787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto typedefType = desugared->getAs<TypedefType>()) { 586887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TypedefNameDecl *typedefDecl = typedefType->getDecl(); 586987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar QualType underlyingType = typedefDecl->getUnderlyingType(); 587087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto typedefNullability 587187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar = AttributedType::stripOuterNullability(underlyingType)) { 587287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (*typedefNullability == *existingNullability) { 587387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Diag(typedefDecl->getLocation(), diag::note_nullability_here) 587487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << DiagNullabilityKind(*existingNullability, false); 587587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 587687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 587787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 587887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 587987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return true; 588087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 588187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 588287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 588387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If this definitely isn't a pointer type, reject the specifier. 588487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!desugared->canHaveNullability()) { 588587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Diag(nullabilityLoc, diag::err_nullability_nonpointer) 588687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << DiagNullabilityKind(nullability, isContextSensitive) << type; 588787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return true; 588887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 588987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 589087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // For the context-sensitive keywords/Objective-C property 589187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // attributes, require that the type be a single-level pointer. 589287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (isContextSensitive) { 589387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Make sure that the pointee isn't itself a pointer type. 589487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar QualType pointeeType = desugared->getPointeeType(); 589587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (pointeeType->isAnyPointerType() || 589687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar pointeeType->isObjCObjectPointerType() || 589787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar pointeeType->isMemberPointerType()) { 589887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Diag(nullabilityLoc, diag::err_nullability_cs_multilevel) 589987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << DiagNullabilityKind(nullability, true) 590087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << type; 590187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Diag(nullabilityLoc, diag::note_nullability_type_specifier) 590287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << DiagNullabilityKind(nullability, false) 590387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << type 590487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << FixItHint::CreateReplacement(nullabilityLoc, 590587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar getNullabilitySpelling(nullability)); 590687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return true; 590787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 590887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 590987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 591087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Form the attributed type. 591187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type = Context.getAttributedType( 591287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar AttributedType::getNullabilityAttrKind(nullability), type, type); 591387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return false; 591487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 591587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 591687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarbool Sema::checkObjCKindOfType(QualType &type, SourceLocation loc) { 591787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Find out if it's an Objective-C object or object pointer type; 591887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar const ObjCObjectPointerType *ptrType = type->getAs<ObjCObjectPointerType>(); 591987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar const ObjCObjectType *objType = ptrType ? ptrType->getObjectType() 592087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar : type->getAs<ObjCObjectType>(); 592187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 592287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If not, we can't apply __kindof. 592387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!objType) { 592487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // FIXME: Handle dependent types that aren't yet object types. 592587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Diag(loc, diag::err_objc_kindof_nonobject) 592687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << type; 592787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return true; 592887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 592987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 593087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Rebuild the "equivalent" type, which pushes __kindof down into 593187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // the object type. 59324967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // There is no need to apply kindof on an unqualified id type. 59334967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar QualType equivType = Context.getObjCObjectType( 59344967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar objType->getBaseType(), objType->getTypeArgsAsWritten(), 59354967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar objType->getProtocols(), 59364967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar /*isKindOf=*/objType->isObjCUnqualifiedId() ? false : true); 593787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 593887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If we started with an object pointer type, rebuild it. 593987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (ptrType) { 594087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar equivType = Context.getObjCObjectPointerType(equivType); 594187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto nullability = type->getNullability(Context)) { 594287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar auto attrKind = AttributedType::getNullabilityAttrKind(*nullability); 594387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar equivType = Context.getAttributedType(attrKind, equivType, equivType); 594487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 594587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 594687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 594787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Build the attributed type to record where __kindof occurred. 594887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type = Context.getAttributedType(AttributedType::attr_objc_kindof, 594987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type, 595087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar equivType); 595187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 595287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return false; 595387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 595487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 595587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// Map a nullability attribute kind to a nullability kind. 595687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarstatic NullabilityKind mapNullabilityAttrKind(AttributeList::Kind kind) { 595787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar switch (kind) { 595887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case AttributeList::AT_TypeNonNull: 595987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return NullabilityKind::NonNull; 596087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 596187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case AttributeList::AT_TypeNullable: 596287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return NullabilityKind::Nullable; 596387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 596487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case AttributeList::AT_TypeNullUnspecified: 596587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return NullabilityKind::Unspecified; 596687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 596787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar default: 596887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar llvm_unreachable("not a nullability attribute kind"); 596987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 597087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 597187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 597287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// Distribute a nullability type attribute that cannot be applied to 597387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// the type specifier to a pointer, block pointer, or member pointer 597487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// declarator, complaining if necessary. 597587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// 597687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// \returns true if the nullability annotation was distributed, false 597787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// otherwise. 597887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarstatic bool distributeNullabilityTypeAttr(TypeProcessingState &state, 597987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar QualType type, 598087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar AttributeList &attr) { 598187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Declarator &declarator = state.getDeclarator(); 598287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 598387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /// Attempt to move the attribute to the specified chunk. 598487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar auto moveToChunk = [&](DeclaratorChunk &chunk, bool inFunction) -> bool { 598587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If there is already a nullability attribute there, don't add 598687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // one. 598787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (hasNullabilityAttr(chunk.getAttrListRef())) 598887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return false; 598987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 599087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Complain about the nullability qualifier being in the wrong 599187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // place. 599287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar enum { 599387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar PK_Pointer, 599487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar PK_BlockPointer, 599587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar PK_MemberPointer, 599687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar PK_FunctionPointer, 599787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar PK_MemberFunctionPointer, 599887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } pointerKind 599987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar = chunk.Kind == DeclaratorChunk::Pointer ? (inFunction ? PK_FunctionPointer 600087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar : PK_Pointer) 600187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar : chunk.Kind == DeclaratorChunk::BlockPointer ? PK_BlockPointer 600287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar : inFunction? PK_MemberFunctionPointer : PK_MemberPointer; 600387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 600487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar auto diag = state.getSema().Diag(attr.getLoc(), 600587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar diag::warn_nullability_declspec) 600687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << DiagNullabilityKind(mapNullabilityAttrKind(attr.getKind()), 600787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar attr.isContextSensitiveKeywordAttribute()) 600887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << type 600987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << static_cast<unsigned>(pointerKind); 601087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 601187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // FIXME: MemberPointer chunks don't carry the location of the *. 601287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (chunk.Kind != DeclaratorChunk::MemberPointer) { 601387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar diag << FixItHint::CreateRemoval(attr.getLoc()) 601487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << FixItHint::CreateInsertion( 601587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar state.getSema().getPreprocessor() 601687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar .getLocForEndOfToken(chunk.Loc), 601787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar " " + attr.getName()->getName().str() + " "); 601887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 601987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 602087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar moveAttrFromListToList(attr, state.getCurrentAttrListRef(), 602187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar chunk.getAttrListRef()); 602287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return true; 602387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar }; 602487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 602587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Move it to the outermost pointer, member pointer, or block 602687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // pointer declarator. 602787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar for (unsigned i = state.getCurrentChunkIndex(); i != 0; --i) { 602887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DeclaratorChunk &chunk = declarator.getTypeObject(i-1); 602987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar switch (chunk.Kind) { 603087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Pointer: 603187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::BlockPointer: 603287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::MemberPointer: 603387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return moveToChunk(chunk, false); 603487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 603587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Paren: 603687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Array: 603787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar continue; 603887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 603987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Function: 604087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Try to move past the return type to a function/block/member 604187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // function pointer. 604287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (DeclaratorChunk *dest = maybeMovePastReturnType( 604387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar declarator, i, 604487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /*onlyBlockPointers=*/false)) { 604587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return moveToChunk(*dest, true); 604687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 604787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 604887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return false; 604987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 605087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Don't walk through these. 605187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case DeclaratorChunk::Reference: 60524967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case DeclaratorChunk::Pipe: 605387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return false; 605487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 605587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 605687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 605787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return false; 605887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 605987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 60605b92696c8f1f8ef943ad87397b95c031b5787305Reid Klecknerstatic AttributedType::Kind getCCTypeAttrKind(AttributeList &Attr) { 60615b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner assert(!Attr.isInvalid()); 60625b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner switch (Attr.getKind()) { 60635b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner default: 60645b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner llvm_unreachable("not a calling convention attribute"); 60655b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner case AttributeList::AT_CDecl: 60665b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner return AttributedType::attr_cdecl; 60675b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner case AttributeList::AT_FastCall: 60685b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner return AttributedType::attr_fastcall; 60695b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner case AttributeList::AT_StdCall: 60705b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner return AttributedType::attr_stdcall; 60715b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner case AttributeList::AT_ThisCall: 60725b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner return AttributedType::attr_thiscall; 60735b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner case AttributeList::AT_Pascal: 60745b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner return AttributedType::attr_pascal; 60754967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case AttributeList::AT_SwiftCall: 60764967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return AttributedType::attr_swiftcall; 6077176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines case AttributeList::AT_VectorCall: 6078176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines return AttributedType::attr_vectorcall; 60795b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner case AttributeList::AT_Pcs: { 6080fbf6f5c8ac0a3feb9a5add5f9221a21f68ca487aAaron Ballman // The attribute may have had a fixit applied where we treated an 6081fbf6f5c8ac0a3feb9a5add5f9221a21f68ca487aAaron Ballman // identifier as a string literal. The contents of the string are valid, 6082fbf6f5c8ac0a3feb9a5add5f9221a21f68ca487aAaron Ballman // but the form may not be. 6083fbf6f5c8ac0a3feb9a5add5f9221a21f68ca487aAaron Ballman StringRef Str; 6084fbf6f5c8ac0a3feb9a5add5f9221a21f68ca487aAaron Ballman if (Attr.isArgExpr(0)) 6085fbf6f5c8ac0a3feb9a5add5f9221a21f68ca487aAaron Ballman Str = cast<StringLiteral>(Attr.getArgAsExpr(0))->getString(); 6086fbf6f5c8ac0a3feb9a5add5f9221a21f68ca487aAaron Ballman else 6087fbf6f5c8ac0a3feb9a5add5f9221a21f68ca487aAaron Ballman Str = Attr.getArgAsIdent(0)->Ident->getName(); 6088fbf6f5c8ac0a3feb9a5add5f9221a21f68ca487aAaron Ballman return llvm::StringSwitch<AttributedType::Kind>(Str) 60895b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner .Case("aapcs", AttributedType::attr_pcs) 60905b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner .Case("aapcs-vfp", AttributedType::attr_pcs_vfp); 60915b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner } 60925b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner case AttributeList::AT_IntelOclBicc: 60935b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner return AttributedType::attr_inteloclbicc; 6094e8519c31a6ef853b627d557702ac1890f18ce2c9Charles Davis case AttributeList::AT_MSABI: 6095e8519c31a6ef853b627d557702ac1890f18ce2c9Charles Davis return AttributedType::attr_ms_abi; 6096e8519c31a6ef853b627d557702ac1890f18ce2c9Charles Davis case AttributeList::AT_SysVABI: 6097e8519c31a6ef853b627d557702ac1890f18ce2c9Charles Davis return AttributedType::attr_sysv_abi; 60984967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case AttributeList::AT_PreserveMost: 60994967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return AttributedType::attr_preserve_most; 61004967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case AttributeList::AT_PreserveAll: 61014967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return AttributedType::attr_preserve_all; 61025b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner } 61035b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner llvm_unreachable("unexpected attribute kind!"); 61045b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner} 61055b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner 6106711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Process an individual function attribute. Returns true to 6107711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// indicate that the attribute was handled, false if it wasn't. 6108711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleFunctionTypeAttr(TypeProcessingState &state, 6109711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 6110711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &type) { 6111711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Sema &S = state.getSema(); 6112e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 6113711c52bb20d0c69063b52a99826fb7d2835501f1John McCall FunctionTypeUnwrapper unwrapped(S, type); 61142455636163fdd18581d7fdae816433f886d88213Mike Stump 61158e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr.getKind() == AttributeList::AT_NoReturn) { 6116711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (S.CheckNoReturnAttr(attr)) 611704a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall return true; 6118e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 6119e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // Delay if this is not a function type. 6120711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!unwrapped.isFunctionType()) 6121711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return false; 6122425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola 6123425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola // Otherwise we can process right away. 6124711c52bb20d0c69063b52a99826fb7d2835501f1John McCall FunctionType::ExtInfo EI = unwrapped.get()->getExtInfo().withNoReturn(true); 6125711c52bb20d0c69063b52a99826fb7d2835501f1John McCall type = unwrapped.wrap(S, S.Context.adjustFunctionType(unwrapped.get(), EI)); 6126711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 6127711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 6128425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola 6129f85e193739c953358c865005855253af4f68a497John McCall // ns_returns_retained is not always a type attribute, but if we got 6130f85e193739c953358c865005855253af4f68a497John McCall // here, we're treating it as one right now. 61318e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr.getKind() == AttributeList::AT_NSReturnsRetained) { 61324e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie assert(S.getLangOpts().ObjCAutoRefCount && 6133f85e193739c953358c865005855253af4f68a497John McCall "ns_returns_retained treated as type attribute in non-ARC"); 6134f85e193739c953358c865005855253af4f68a497John McCall if (attr.getNumArgs()) return true; 6135f85e193739c953358c865005855253af4f68a497John McCall 6136f85e193739c953358c865005855253af4f68a497John McCall // Delay if this is not a function type. 6137f85e193739c953358c865005855253af4f68a497John McCall if (!unwrapped.isFunctionType()) 6138f85e193739c953358c865005855253af4f68a497John McCall return false; 6139f85e193739c953358c865005855253af4f68a497John McCall 6140f85e193739c953358c865005855253af4f68a497John McCall FunctionType::ExtInfo EI 6141f85e193739c953358c865005855253af4f68a497John McCall = unwrapped.get()->getExtInfo().withProducesResult(true); 6142f85e193739c953358c865005855253af4f68a497John McCall type = unwrapped.wrap(S, S.Context.adjustFunctionType(unwrapped.get(), EI)); 6143f85e193739c953358c865005855253af4f68a497John McCall return true; 6144f85e193739c953358c865005855253af4f68a497John McCall } 6145f85e193739c953358c865005855253af4f68a497John McCall 61468e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr.getKind() == AttributeList::AT_Regparm) { 6147711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned value; 6148711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (S.CheckRegparmAttr(attr, value)) 6149711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 61501e030eb1194763b42c1752723be23b1515f48981John McCall 6151711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Delay if this is not a function type. 6152711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!unwrapped.isFunctionType()) 6153008df5dce3938456ae7ea2e7ab3b2d12391ebf3eJohn McCall return false; 61541e030eb1194763b42c1752723be23b1515f48981John McCall 6155ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis // Diagnose regparm with fastcall. 6156ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis const FunctionType *fn = unwrapped.get(); 6157ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis CallingConv CC = fn->getCallConv(); 6158ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis if (CC == CC_X86FastCall) { 6159ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis S.Diag(attr.getLoc(), diag::err_attributes_are_not_compatible) 6160ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis << FunctionType::getNameForCallConv(CC) 6161ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis << "regparm"; 6162ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis attr.setInvalid(); 6163ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis return true; 6164ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis } 6165ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis 616691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier FunctionType::ExtInfo EI = 6167711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unwrapped.get()->getExtInfo().withRegParm(value); 6168711c52bb20d0c69063b52a99826fb7d2835501f1John McCall type = unwrapped.wrap(S, S.Context.adjustFunctionType(unwrapped.get(), EI)); 6169711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 6170425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola } 6171425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola 617282bfa19fe3be324b13fdbcda46304b52c500f0d4Aaron Ballman // Delay if the type didn't work out to a function. 617382bfa19fe3be324b13fdbcda46304b52c500f0d4Aaron Ballman if (!unwrapped.isFunctionType()) return false; 617482bfa19fe3be324b13fdbcda46304b52c500f0d4Aaron Ballman 617504a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall // Otherwise, a calling convention. 6176711c52bb20d0c69063b52a99826fb7d2835501f1John McCall CallingConv CC; 6177711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (S.CheckCallingConvAttr(attr, CC)) 6178711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 6179f82b4e85b1219295cad4b5851b035575bc293010John McCall 6180711c52bb20d0c69063b52a99826fb7d2835501f1John McCall const FunctionType *fn = unwrapped.get(); 6181711c52bb20d0c69063b52a99826fb7d2835501f1John McCall CallingConv CCOld = fn->getCallConv(); 6182ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner AttributedType::Kind CCAttrKind = getCCTypeAttrKind(attr); 618304a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 6184e8519c31a6ef853b627d557702ac1890f18ce2c9Charles Davis if (CCOld != CC) { 6185ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner // Error out on when there's already an attribute on the type 6186ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner // and the CCs don't match. 6187ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner const AttributedType *AT = S.getCallingConvAttributedType(type); 6188ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner if (AT && AT->getAttrKind() != CCAttrKind) { 6189ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner S.Diag(attr.getLoc(), diag::err_attributes_are_not_compatible) 6190ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner << FunctionType::getNameForCallConv(CC) 6191ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner << FunctionType::getNameForCallConv(CCOld); 6192ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner attr.setInvalid(); 6193ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner return true; 6194ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner } 619504a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall } 619604a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 61974967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Diagnose use of variadic functions with calling conventions that 61984967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // don't support them (e.g. because they're callee-cleanup). 61994967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // We delay warning about this on unprototyped function declarations 62004967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // until after redeclaration checking, just in case we pick up a 62014967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // prototype that way. And apparently we also "delay" warning about 62024967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // unprototyped function types in general, despite not necessarily having 62034967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // much ability to diagnose it later. 6204176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines if (!supportsVariadicCall(CC)) { 620545d3950e373412f395413c81a0310e8090508608Hans Wennborg const FunctionProtoType *FnP = dyn_cast<FunctionProtoType>(fn); 620645d3950e373412f395413c81a0310e8090508608Hans Wennborg if (FnP && FnP->isVariadic()) { 620745d3950e373412f395413c81a0310e8090508608Hans Wennborg unsigned DiagID = diag::err_cconv_varargs; 62084967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 620945d3950e373412f395413c81a0310e8090508608Hans Wennborg // stdcall and fastcall are ignored with a warning for GCC and MS 621045d3950e373412f395413c81a0310e8090508608Hans Wennborg // compatibility. 62114967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar bool IsInvalid = true; 62124967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (CC == CC_X86StdCall || CC == CC_X86FastCall) { 621345d3950e373412f395413c81a0310e8090508608Hans Wennborg DiagID = diag::warn_cconv_varargs; 62144967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar IsInvalid = false; 62154967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 621645d3950e373412f395413c81a0310e8090508608Hans Wennborg 621745d3950e373412f395413c81a0310e8090508608Hans Wennborg S.Diag(attr.getLoc(), DiagID) << FunctionType::getNameForCallConv(CC); 62184967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (IsInvalid) attr.setInvalid(); 6219711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 622004a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall } 622145d3950e373412f395413c81a0310e8090508608Hans Wennborg } 622204a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 6223176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines // Also diagnose fastcall with regparm. 6224176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines if (CC == CC_X86FastCall && fn->getHasRegParm()) { 6225176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines S.Diag(attr.getLoc(), diag::err_attributes_are_not_compatible) 6226176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines << "regparm" << FunctionType::getNameForCallConv(CC_X86FastCall); 6227176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines attr.setInvalid(); 6228176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines return true; 622904a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall } 6230f82b4e85b1219295cad4b5851b035575bc293010John McCall 62315b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner // Modify the CC from the wrapped function type, wrap it all back, and then 62325b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner // wrap the whole thing in an AttributedType as written. The modified type 62335b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner // might have a different CC if we ignored the attribute. 62344967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar QualType Equivalent; 62354967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (CCOld == CC) { 62364967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Equivalent = type; 62374967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } else { 62384967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar auto EI = unwrapped.get()->getExtInfo().withCallingConv(CC); 62394967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Equivalent = 62405b92696c8f1f8ef943ad87397b95c031b5787305Reid Kleckner unwrapped.wrap(S, S.Context.adjustFunctionType(unwrapped.get(), EI)); 62414967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 6242ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner type = S.Context.getAttributedType(CCAttrKind, type, Equivalent); 6243711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 6244f82b4e85b1219295cad4b5851b035575bc293010John McCall} 6245f82b4e85b1219295cad4b5851b035575bc293010John McCall 6246651f13cea278ec967336033dd032faef0e9fc2ecStephen Hinesbool Sema::hasExplicitCallingConv(QualType &T) { 6247651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines QualType R = T.IgnoreParens(); 6248651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines while (const AttributedType *AT = dyn_cast<AttributedType>(R)) { 6249651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (AT->isCallingConv()) 6250651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return true; 6251651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines R = AT->getModifiedType().IgnoreParens(); 6252651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 6253651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines return false; 6254651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines} 6255651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 625687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarvoid Sema::adjustMemberFunctionCC(QualType &T, bool IsStatic, bool IsCtorOrDtor, 625787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation Loc) { 6258651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines FunctionTypeUnwrapper Unwrapped(*this, T); 6259651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines const FunctionType *FT = Unwrapped.get(); 6260ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner bool IsVariadic = (isa<FunctionProtoType>(FT) && 6261ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner cast<FunctionProtoType>(FT)->isVariadic()); 6262651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines CallingConv CurCC = FT->getCallConv(); 6263651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines CallingConv ToCC = Context.getDefaultCallingConvention(IsVariadic, !IsStatic); 6264ef072033876e295ec5d3402f8730a3ae358ad815Reid Kleckner 626587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (CurCC == ToCC) 6266207f4d8543529221932af82836016a2ef066c917Peter Collingbourne return; 6267651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 626887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // MS compiler ignores explicit calling convention attributes on structors. We 626987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // should do the same. 627087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (Context.getTargetInfo().getCXXABI().isMicrosoft() && IsCtorOrDtor) { 627187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Issue a warning on ignored calling convention -- except of __stdcall. 627287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Again, this is what MS compiler does. 627387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (CurCC != CC_X86StdCall) 627487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Diag(Loc, diag::warn_cconv_structors) 627587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << FunctionType::getNameForCallConv(CurCC); 627687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Default adjustment. 627787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } else { 627887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Only adjust types with the default convention. For example, on Windows 627987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // we should adjust a __cdecl type to __thiscall for instance methods, and a 628087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // __thiscall type to __cdecl for static methods. 628187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar CallingConv DefaultCC = 628287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Context.getDefaultCallingConvention(IsVariadic, IsStatic); 628387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 628487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (CurCC != DefaultCC || DefaultCC == ToCC) 628587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return; 628687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 628787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (hasExplicitCallingConv(T)) 628887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return; 628987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 629087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 6291651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines FT = Context.adjustFunctionType(FT, FT->getExtInfo().withCallingConv(ToCC)); 6292651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines QualType Wrapped = Unwrapped.wrap(*this, FT); 6293651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines T = Context.getAdjustedType(T, Wrapped); 6294207f4d8543529221932af82836016a2ef066c917Peter Collingbourne} 6295207f4d8543529221932af82836016a2ef066c917Peter Collingbourne 62966e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// HandleVectorSizeAttribute - this attribute is only applicable to integral 62976e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// and float scalars, although arrays, pointers, and function return values are 62986e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// allowed in conjunction with this construct. Aggregates with this attribute 62996e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// are invalid, even if they are of the same size as a corresponding scalar. 63006e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// The raw attribute should contain precisely 1 argument, the vector size for 63016e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// the variable, measured in bytes. If curType and rawAttr are well formed, 63026e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// this routine will return a new vector type. 6303788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattnerstatic void HandleVectorSizeAttr(QualType& CurType, const AttributeList &Attr, 6304788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner Sema &S) { 630556affbcaeff9a01caa70b2a237f7e6ac31c8ded6Bob Wilson // Check the attribute arguments. 63066e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson if (Attr.getNumArgs() != 1) { 6307baec77865b3ce64bb942dddc5dc2fada84ce5099Aaron Ballman S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) 6308baec77865b3ce64bb942dddc5dc2fada84ce5099Aaron Ballman << Attr.getName() << 1; 6309e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 63106e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 63116e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 6312624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman Expr *sizeExpr = static_cast<Expr *>(Attr.getArgAsExpr(0)); 63136e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson llvm::APSInt vecSize(32); 6314ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (sizeExpr->isTypeDependent() || sizeExpr->isValueDependent() || 6315ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !sizeExpr->isIntegerConstantExpr(vecSize, S.Context)) { 63169f939f75c64770c746d78579f75a49f9c657e426Aaron Ballman S.Diag(Attr.getLoc(), diag::err_attribute_argument_type) 63179f939f75c64770c746d78579f75a49f9c657e426Aaron Ballman << Attr.getName() << AANT_ArgumentIntegerConstant 63189f939f75c64770c746d78579f75a49f9c657e426Aaron Ballman << sizeExpr->getSourceRange(); 6319e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 63206e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 63216e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 6322b445cb9662067b7c7586815937b07828ede9bb49Aaron Ballman // The base type must be integer (not Boolean or enumeration) or float, and 6323b445cb9662067b7c7586815937b07828ede9bb49Aaron Ballman // can't already be a vector. 6324b445cb9662067b7c7586815937b07828ede9bb49Aaron Ballman if (!CurType->isBuiltinType() || CurType->isBooleanType() || 63251652ed1cd2cb63e0d0cb74c67a40d9dc5cab6b89Eli Friedman (!CurType->isIntegerType() && !CurType->isRealFloatingType())) { 63266e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type) << CurType; 6327e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 63286e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 63296e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 63306e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson unsigned typeSize = static_cast<unsigned>(S.Context.getTypeSize(CurType)); 63316e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson // vecSize is specified in bytes - convert to bits. 63326e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue() * 8); 63336e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson 63346e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson // the vector size needs to be an integral multiple of the type size. 63356e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson if (vectorSize % typeSize) { 63366e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson S.Diag(Attr.getLoc(), diag::err_attribute_invalid_size) 63376e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson << sizeExpr->getSourceRange(); 6338e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 63396e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 63406e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 63411652ed1cd2cb63e0d0cb74c67a40d9dc5cab6b89Eli Friedman if (VectorType::isVectorSizeTooLarge(vectorSize / typeSize)) { 63421652ed1cd2cb63e0d0cb74c67a40d9dc5cab6b89Eli Friedman S.Diag(Attr.getLoc(), diag::err_attribute_size_too_large) 63431652ed1cd2cb63e0d0cb74c67a40d9dc5cab6b89Eli Friedman << sizeExpr->getSourceRange(); 63441652ed1cd2cb63e0d0cb74c67a40d9dc5cab6b89Eli Friedman Attr.setInvalid(); 63451652ed1cd2cb63e0d0cb74c67a40d9dc5cab6b89Eli Friedman return; 63461652ed1cd2cb63e0d0cb74c67a40d9dc5cab6b89Eli Friedman } 63476e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson if (vectorSize == 0) { 63486e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson S.Diag(Attr.getLoc(), diag::err_attribute_zero_size) 63496e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson << sizeExpr->getSourceRange(); 6350e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 63516e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 63526e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 63536e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson 63546e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson // Success! Instantiate the vector type, the number of elements is > 0, and 63556e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson // not required to be a power of 2, unlike GCC. 6356788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner CurType = S.Context.getVectorType(CurType, vectorSize/typeSize, 6357e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson VectorType::GenericVector); 63586e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson} 63596e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson 63604ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor/// \brief Process the OpenCL-like ext_vector_type attribute when it occurs on 63614ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor/// a type. 636291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosierstatic void HandleExtVectorTypeAttr(QualType &CurType, 636391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier const AttributeList &Attr, 63644ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor Sema &S) { 6365624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman // check the attribute arguments. 6366624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman if (Attr.getNumArgs() != 1) { 6367624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) 6368624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman << Attr.getName() << 1; 6369624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman return; 6370624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman } 6371624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman 63724ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor Expr *sizeExpr; 637391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 63744ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor // Special case where the argument is a template id. 6375624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman if (Attr.isArgIdent(0)) { 63764ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor CXXScopeSpec SS; 6377e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara SourceLocation TemplateKWLoc; 63784ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor UnqualifiedId id; 6379624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman id.setIdentifier(Attr.getArgAsIdent(0)->Ident, Attr.getLoc()); 6380e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 6381e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara ExprResult Size = S.ActOnIdExpression(S.getCurScope(), SS, TemplateKWLoc, 6382e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara id, false, false); 63834ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor if (Size.isInvalid()) 63844ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor return; 638591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 63864ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor sizeExpr = Size.get(); 63874ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor } else { 6388624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman sizeExpr = Attr.getArgAsExpr(0); 63894ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor } 639091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 63914ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor // Create the vector type. 63924ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor QualType T = S.BuildExtVectorType(CurType, sizeExpr, Attr.getLoc()); 63934ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor if (!T.isNull()) 63944ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor CurType = T; 63954ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor} 63964ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor 6397b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northoverstatic bool isPermittedNeonBaseType(QualType &Ty, 6398651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines VectorType::VectorKind VecKind, Sema &S) { 6399b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover const BuiltinType *BTy = Ty->getAs<BuiltinType>(); 6400b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover if (!BTy) 6401b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover return false; 6402b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover 6403651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines llvm::Triple Triple = S.Context.getTargetInfo().getTriple(); 6404651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 6405651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // Signed poly is mathematically wrong, but has been baked into some ABIs by 6406651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines // now. 6407651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines bool IsPolyUnsigned = Triple.getArch() == llvm::Triple::aarch64 || 6408176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines Triple.getArch() == llvm::Triple::aarch64_be; 6409b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover if (VecKind == VectorType::NeonPolyVector) { 6410651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (IsPolyUnsigned) { 6411624bb5e59dbcc24efeee7dff12c9b48d2b5077e9Kevin Qin // AArch64 polynomial vectors are unsigned and support poly64. 6412b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover return BTy->getKind() == BuiltinType::UChar || 6413624bb5e59dbcc24efeee7dff12c9b48d2b5077e9Kevin Qin BTy->getKind() == BuiltinType::UShort || 6414651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines BTy->getKind() == BuiltinType::ULong || 6415624bb5e59dbcc24efeee7dff12c9b48d2b5077e9Kevin Qin BTy->getKind() == BuiltinType::ULongLong; 6416b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover } else { 6417b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover // AArch32 polynomial vector are signed. 6418b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover return BTy->getKind() == BuiltinType::SChar || 6419b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover BTy->getKind() == BuiltinType::Short; 6420b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover } 6421b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover } 6422b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover 6423b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover // Non-polynomial vector types: the usual suspects are allowed, as well as 6424b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover // float64_t on AArch64. 6425651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines bool Is64Bit = Triple.getArch() == llvm::Triple::aarch64 || 6426176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines Triple.getArch() == llvm::Triple::aarch64_be; 6427651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 6428651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (Is64Bit && BTy->getKind() == BuiltinType::Double) 6429b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover return true; 6430b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover 6431b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover return BTy->getKind() == BuiltinType::SChar || 6432b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover BTy->getKind() == BuiltinType::UChar || 6433b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover BTy->getKind() == BuiltinType::Short || 6434b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover BTy->getKind() == BuiltinType::UShort || 6435b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover BTy->getKind() == BuiltinType::Int || 6436b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover BTy->getKind() == BuiltinType::UInt || 6437651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines BTy->getKind() == BuiltinType::Long || 6438651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines BTy->getKind() == BuiltinType::ULong || 6439b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover BTy->getKind() == BuiltinType::LongLong || 6440b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover BTy->getKind() == BuiltinType::ULongLong || 6441b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover BTy->getKind() == BuiltinType::Float || 6442b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover BTy->getKind() == BuiltinType::Half; 6443b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover} 6444b793f0d3448a15277cd6b6cc4ba558ded39a8084Tim Northover 64454211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// HandleNeonVectorTypeAttr - The "neon_vector_type" and 64464211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// "neon_polyvector_type" attributes are used to create vector types that 64474211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// are mangled according to ARM's ABI. Otherwise, these types are identical 64484211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// to those created with the "vector_size" attribute. Unlike "vector_size" 64494211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// the argument to these Neon attributes is the number of vector elements, 64504211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// not the vector size in bytes. The vector width and element type must 64514211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// match one of the standard Neon vector types. 64524211bb68cff1f310be280f66a59520548ef99d8fBob Wilsonstatic void HandleNeonVectorTypeAttr(QualType& CurType, 64534211bb68cff1f310be280f66a59520548ef99d8fBob Wilson const AttributeList &Attr, Sema &S, 64549f939f75c64770c746d78579f75a49f9c657e426Aaron Ballman VectorType::VectorKind VecKind) { 64552440fb1f91557912f8c43cb72201170254ae09f4Amara Emerson // Target must have NEON 64562440fb1f91557912f8c43cb72201170254ae09f4Amara Emerson if (!S.Context.getTargetInfo().hasFeature("neon")) { 64572440fb1f91557912f8c43cb72201170254ae09f4Amara Emerson S.Diag(Attr.getLoc(), diag::err_attribute_unsupported) << Attr.getName(); 64582440fb1f91557912f8c43cb72201170254ae09f4Amara Emerson Attr.setInvalid(); 64592440fb1f91557912f8c43cb72201170254ae09f4Amara Emerson return; 64602440fb1f91557912f8c43cb72201170254ae09f4Amara Emerson } 64614211bb68cff1f310be280f66a59520548ef99d8fBob Wilson // Check the attribute arguments. 64624211bb68cff1f310be280f66a59520548ef99d8fBob Wilson if (Attr.getNumArgs() != 1) { 6463baec77865b3ce64bb942dddc5dc2fada84ce5099Aaron Ballman S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) 6464baec77865b3ce64bb942dddc5dc2fada84ce5099Aaron Ballman << Attr.getName() << 1; 64654211bb68cff1f310be280f66a59520548ef99d8fBob Wilson Attr.setInvalid(); 64664211bb68cff1f310be280f66a59520548ef99d8fBob Wilson return; 64674211bb68cff1f310be280f66a59520548ef99d8fBob Wilson } 64684211bb68cff1f310be280f66a59520548ef99d8fBob Wilson // The number of elements must be an ICE. 6469624421f98d8fcb8ed8ebc406da41217682159aa8Aaron Ballman Expr *numEltsExpr = static_cast<Expr *>(Attr.getArgAsExpr(0)); 64704211bb68cff1f310be280f66a59520548ef99d8fBob Wilson llvm::APSInt numEltsInt(32); 64714211bb68cff1f310be280f66a59520548ef99d8fBob Wilson if (numEltsExpr->isTypeDependent() || numEltsExpr->isValueDependent() || 64724211bb68cff1f310be280f66a59520548ef99d8fBob Wilson !numEltsExpr->isIntegerConstantExpr(numEltsInt, S.Context)) { 64739f939f75c64770c746d78579f75a49f9c657e426Aaron Ballman S.Diag(Attr.getLoc(), diag::err_attribute_argument_type) 64749f939f75c64770c746d78579f75a49f9c657e426Aaron Ballman << Attr.getName() << AANT_ArgumentIntegerConstant 64759f939f75c64770c746d78579f75a49f9c657e426Aaron Ballman << numEltsExpr->getSourceRange(); 64764211bb68cff1f310be280f66a59520548ef99d8fBob Wilson Attr.setInvalid(); 64774211bb68cff1f310be280f66a59520548ef99d8fBob Wilson return; 64784211bb68cff1f310be280f66a59520548ef99d8fBob Wilson } 64794211bb68cff1f310be280f66a59520548ef99d8fBob Wilson // Only certain element types are supported for Neon vectors. 6480651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (!isPermittedNeonBaseType(CurType, VecKind, S)) { 6481e2d20c9a539cdfa75db6382eb5a327a73e5e0e1bTim Northover S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type) << CurType; 6482e2d20c9a539cdfa75db6382eb5a327a73e5e0e1bTim Northover Attr.setInvalid(); 6483e2d20c9a539cdfa75db6382eb5a327a73e5e0e1bTim Northover return; 64844211bb68cff1f310be280f66a59520548ef99d8fBob Wilson } 6485e2d20c9a539cdfa75db6382eb5a327a73e5e0e1bTim Northover 64864211bb68cff1f310be280f66a59520548ef99d8fBob Wilson // The total size of the vector must be 64 or 128 bits. 64874211bb68cff1f310be280f66a59520548ef99d8fBob Wilson unsigned typeSize = static_cast<unsigned>(S.Context.getTypeSize(CurType)); 64884211bb68cff1f310be280f66a59520548ef99d8fBob Wilson unsigned numElts = static_cast<unsigned>(numEltsInt.getZExtValue()); 64894211bb68cff1f310be280f66a59520548ef99d8fBob Wilson unsigned vecSize = typeSize * numElts; 64904211bb68cff1f310be280f66a59520548ef99d8fBob Wilson if (vecSize != 64 && vecSize != 128) { 64914211bb68cff1f310be280f66a59520548ef99d8fBob Wilson S.Diag(Attr.getLoc(), diag::err_attribute_bad_neon_vector_size) << CurType; 64924211bb68cff1f310be280f66a59520548ef99d8fBob Wilson Attr.setInvalid(); 64934211bb68cff1f310be280f66a59520548ef99d8fBob Wilson return; 64944211bb68cff1f310be280f66a59520548ef99d8fBob Wilson } 64954211bb68cff1f310be280f66a59520548ef99d8fBob Wilson 64964211bb68cff1f310be280f66a59520548ef99d8fBob Wilson CurType = S.Context.getVectorType(CurType, numElts, VecKind); 64974211bb68cff1f310be280f66a59520548ef99d8fBob Wilson} 64984211bb68cff1f310be280f66a59520548ef99d8fBob Wilson 64994967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar/// Handle OpenCL Access Qualifier Attribute. 65004967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainarstatic void HandleOpenCLAccessAttr(QualType &CurType, const AttributeList &Attr, 65014967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Sema &S) { 65024967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // OpenCL v2.0 s6.6 - Access qualifier can be used only for image and pipe type. 65034967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (!(CurType->isImageType() || CurType->isPipeType())) { 65044967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(Attr.getLoc(), diag::err_opencl_invalid_access_qualifier); 65054967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar Attr.setInvalid(); 65064967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar return; 65074967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 65084967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 65094967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (const TypedefType* TypedefTy = CurType->getAs<TypedefType>()) { 65104967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar QualType PointeeTy = TypedefTy->desugar(); 65114967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(Attr.getLoc(), diag::err_opencl_multiple_access_qualifiers); 65124967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 65134967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar std::string PrevAccessQual; 65144967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar switch (cast<BuiltinType>(PointeeTy.getTypePtr())->getKind()) { 65154967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ 65164967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case BuiltinType::Id: \ 65174967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar PrevAccessQual = #Access; \ 65184967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar break; 65194967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar #include "clang/Basic/OpenCLImageTypes.def" 65204967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar default: 65214967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar assert(0 && "Unable to find corresponding image type."); 65224967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 65234967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 65244967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Diag(TypedefTy->getDecl()->getLocStart(), 65254967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar diag::note_opencl_typedef_access_qualifier) << PrevAccessQual; 65264967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar } 65274967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar} 65284967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 6529711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void processTypeAttrs(TypeProcessingState &state, QualType &type, 6530f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith TypeAttrLocation TAL, AttributeList *attrs) { 6531c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // Scan through and apply attributes to this type where it makes sense. Some 6532c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // attributes (such as __address_space__, __vector_size__, etc) apply to the 6533c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // type, but others can be present in the type specifiers even though they 6534c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // apply to the decl. Here we apply type attributes and ignore the rest. 6535711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 653687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool hasOpenCLAddressSpace = false; 653787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar while (attrs) { 6538711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr = *attrs; 653987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar attrs = attr.getNext(); // reset to the next here due to early loop continue 654087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // stmts 6541711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 6542e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara // Skip attributes that were marked to be invalid. 6543711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (attr.isInvalid()) 6544e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara continue; 6545e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara 6546cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith if (attr.isCXX11Attribute()) { 6547cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith // [[gnu::...]] attributes are treated as declaration attributes, so may 6548cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith // not appertain to a DeclaratorChunk, even if we handle them as type 6549cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith // attributes. 6550cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith if (attr.getScopeName() && attr.getScopeName()->isStr("gnu")) { 6551cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith if (TAL == TAL_DeclChunk) { 6552cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith state.getSema().Diag(attr.getLoc(), 6553cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith diag::warn_cxx11_gnu_attribute_on_type) 6554cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith << attr.getName(); 6555cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith continue; 6556cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith } 6557cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith } else if (TAL != TAL_DeclChunk) { 6558cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith // Otherwise, only consider type processing for a C++11 attribute if 6559cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith // it's actually been applied to a type. 6560cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith continue; 6561cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith } 6562f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith } 6563f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith 6564b1f1b267351be74013f966f4834cde1eddbe0233Abramo Bagnara // If this is an attribute we can handle, do so now, 6565b1f1b267351be74013f966f4834cde1eddbe0233Abramo Bagnara // otherwise, add it to the FnAttrs list for rechaining. 6566711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (attr.getKind()) { 6567cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith default: 6568cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith // A C++11 attribute on a declarator chunk must appertain to a type. 6569d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith if (attr.isCXX11Attribute() && TAL == TAL_DeclChunk) { 6570cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith state.getSema().Diag(attr.getLoc(), diag::err_attribute_not_type_attr) 6571d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith << attr.getName(); 6572d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith attr.setUsedAsTypeAttr(); 6573d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith } 6574cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith break; 6575cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith 6576cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith case AttributeList::UnknownAttribute: 6577cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith if (attr.isCXX11Attribute() && TAL == TAL_DeclChunk) 6578cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith state.getSema().Diag(attr.getLoc(), 6579cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith diag::warn_unknown_attribute_ignored) 6580cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith << attr.getName(); 6581cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith break; 6582cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith 6583cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith case AttributeList::IgnoredAttribute: 6584cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith break; 658504a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 65868e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_MayAlias: 6587682eae243ae3d96fe3dc302091034e08c414db10Chandler Carruth // FIXME: This attribute needs to actually be handled, but if we ignore 6588682eae243ae3d96fe3dc302091034e08c414db10Chandler Carruth // it it breaks large amounts of Linux software. 6589682eae243ae3d96fe3dc302091034e08c414db10Chandler Carruth attr.setUsedAsTypeAttr(); 6590682eae243ae3d96fe3dc302091034e08c414db10Chandler Carruth break; 6591651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines case AttributeList::AT_OpenCLPrivateAddressSpace: 6592651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines case AttributeList::AT_OpenCLGlobalAddressSpace: 6593651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines case AttributeList::AT_OpenCLLocalAddressSpace: 6594651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines case AttributeList::AT_OpenCLConstantAddressSpace: 65950e2c34f92f00628d48968dfea096d36381f494cbStephen Hines case AttributeList::AT_OpenCLGenericAddressSpace: 65968e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_AddressSpace: 6597711c52bb20d0c69063b52a99826fb7d2835501f1John McCall HandleAddressSpaceTypeAttribute(type, attr, state.getSema()); 6598e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 659987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar hasOpenCLAddressSpace = true; 6600c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner break; 6601711c52bb20d0c69063b52a99826fb7d2835501f1John McCall OBJC_POINTER_TYPE_ATTRS_CASELIST: 6602711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!handleObjCPointerTypeAttr(state, attr, type)) 6603711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeObjCPointerTypeAttr(state, attr, type); 6604e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 6605d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian break; 66068e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_VectorSize: 6607711c52bb20d0c69063b52a99826fb7d2835501f1John McCall HandleVectorSizeAttr(type, attr, state.getSema()); 6608e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 6609f82b4e85b1219295cad4b5851b035575bc293010John McCall break; 66108e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ExtVectorType: 6611a4fa9008988985f9cf01712a99ddd923aea278a0Richard Smith HandleExtVectorTypeAttr(type, attr, state.getSema()); 6612e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 66134ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor break; 66148e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_NeonVectorType: 6615711c52bb20d0c69063b52a99826fb7d2835501f1John McCall HandleNeonVectorTypeAttr(type, attr, state.getSema(), 66169f939f75c64770c746d78579f75a49f9c657e426Aaron Ballman VectorType::NeonVector); 6617e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 66184211bb68cff1f310be280f66a59520548ef99d8fBob Wilson break; 66198e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_NeonPolyVectorType: 6620711c52bb20d0c69063b52a99826fb7d2835501f1John McCall HandleNeonVectorTypeAttr(type, attr, state.getSema(), 66219f939f75c64770c746d78579f75a49f9c657e426Aaron Ballman VectorType::NeonPolyVector); 6622e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 66234211bb68cff1f310be280f66a59520548ef99d8fBob Wilson break; 66244967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar case AttributeList::AT_OpenCLAccess: 66254967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar HandleOpenCLAccessAttr(type, attr, state.getSema()); 6626e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 6627207f4d8543529221932af82836016a2ef066c917Peter Collingbourne break; 6628207f4d8543529221932af82836016a2ef066c917Peter Collingbourne 6629aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman MS_TYPE_ATTRS_CASELIST: 6630aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman if (!handleMSPointerTypeQualifierAttr(state, attr, type)) 6631aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman attr.setUsedAsTypeAttr(); 6632aa9df09729fb8aee3e645549e95fcb413306a7aaAaron Ballman break; 6633d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith 663487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 663587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar NULLABILITY_TYPE_ATTRS_CASELIST: 663687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Either add nullability here or try to distribute it. We 663787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // don't want to distribute the nullability specifier past any 663887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // dependent type, because that complicates the user model. 663987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (type->canHaveNullability() || type->isDependentType() || 664087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar !distributeNullabilityTypeAttr(state, type, attr)) { 664187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (state.getSema().checkNullabilityTypeSpecifier( 664287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type, 664387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar mapNullabilityAttrKind(attr.getKind()), 664487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar attr.getLoc(), 664587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar attr.isContextSensitiveKeywordAttribute())) { 664687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar attr.setInvalid(); 664787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 664887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 664987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar attr.setUsedAsTypeAttr(); 665087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 665187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 665287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 665387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case AttributeList::AT_ObjCKindOf: 665487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // '__kindof' must be part of the decl-specifiers. 665587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar switch (TAL) { 665687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case TAL_DeclSpec: 665787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 665887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 665987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case TAL_DeclChunk: 666087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar case TAL_DeclName: 666187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar state.getSema().Diag(attr.getLoc(), 666287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar diag::err_objc_kindof_wrong_position) 666387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << FixItHint::CreateRemoval(attr.getLoc()) 666487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar << FixItHint::CreateInsertion( 666587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar state.getDeclarator().getDeclSpec().getLocStart(), "__kindof "); 666687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 666787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 666887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 666987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Apply it regardless. 667087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (state.getSema().checkObjCKindOfType(type, attr.getLoc())) 667187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar attr.setInvalid(); 667287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar attr.setUsedAsTypeAttr(); 667387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar break; 667487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 66758e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_NSReturnsRetained: 66764e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!state.getSema().getLangOpts().ObjCAutoRefCount) 6677cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith break; 6678f85e193739c953358c865005855253af4f68a497John McCall // fallthrough into the function attrs 6679f85e193739c953358c865005855253af4f68a497John McCall 6680711c52bb20d0c69063b52a99826fb7d2835501f1John McCall FUNCTION_TYPE_ATTRS_CASELIST: 6681e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 6682e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall 6683711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Never process function type attributes as part of the 6684711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // declaration-specifiers. 6685f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith if (TAL == TAL_DeclSpec) 6686711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeFunctionTypeAttrFromDeclSpec(state, attr, type); 6687711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 6688711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Otherwise, handle the possible delays. 6689711c52bb20d0c69063b52a99826fb7d2835501f1John McCall else if (!handleFunctionTypeAttr(state, attr, type)) 6690711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeFunctionTypeAttr(state, attr, type); 66916e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson break; 6692c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner } 669387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 669487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 669587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If address space is not set, OpenCL 2.0 defines non private default 669687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // address spaces for some cases: 669787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // OpenCL 2.0, section 6.5: 669887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // The address space for a variable at program scope or a static variable 669987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // inside a function can either be __global or __constant, but defaults to 670087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // __global if not specified. 670187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // (...) 670287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Pointers that are declared without pointing to a named address space point 670387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // to the generic address space. 670487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (state.getSema().getLangOpts().OpenCLVersion >= 200 && 670587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar !hasOpenCLAddressSpace && type.getAddressSpace() == 0 && 670687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar (TAL == TAL_DeclSpec || TAL == TAL_DeclChunk)) { 670787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Declarator &D = state.getDeclarator(); 670887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (state.getCurrentChunkIndex() > 0 && 670987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getTypeObject(state.getCurrentChunkIndex() - 1).Kind == 671087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DeclaratorChunk::Pointer) { 671187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type = state.getSema().Context.getAddrSpaceQualType( 671287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type, LangAS::opencl_generic); 671387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } else if (state.getCurrentChunkIndex() == 0 && 671487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getContext() == Declarator::FileContext && 671587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar !D.isFunctionDeclarator() && !D.isFunctionDefinition() && 671687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getDeclSpec().getStorageClassSpec() != DeclSpec::SCS_typedef && 671787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar !type->isSamplerT()) 671887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type = state.getSema().Context.getAddrSpaceQualType( 671987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type, LangAS::opencl_global); 672087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar else if (state.getCurrentChunkIndex() == 0 && 672187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getContext() == Declarator::BlockContext && 672287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static) 672387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type = state.getSema().Context.getAddrSpaceQualType( 672487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar type, LangAS::opencl_global); 672587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 672687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar} 672787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 672887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarvoid Sema::completeExprArrayBound(Expr *E) { 672987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParens())) { 673087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (VarDecl *Var = dyn_cast<VarDecl>(DRE->getDecl())) { 673187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (isTemplateInstantiation(Var->getTemplateSpecializationKind())) { 673287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar SourceLocation PointOfInstantiation = E->getExprLoc(); 673387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 673487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (MemberSpecializationInfo *MSInfo = 673587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Var->getMemberSpecializationInfo()) { 673687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If we don't already have a point of instantiation, this is it. 673787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (MSInfo->getPointOfInstantiation().isInvalid()) { 673887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar MSInfo->setPointOfInstantiation(PointOfInstantiation); 673987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 674087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // This is a modification of an existing AST node. Notify 674187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // listeners. 674287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (ASTMutationListener *L = getASTMutationListener()) 674387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar L->StaticDataMemberInstantiated(Var); 674487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 674587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } else { 674687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar VarTemplateSpecializationDecl *VarSpec = 674787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar cast<VarTemplateSpecializationDecl>(Var); 674887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (VarSpec->getPointOfInstantiation().isInvalid()) 674987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar VarSpec->setPointOfInstantiation(PointOfInstantiation); 675087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 675187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 675287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar InstantiateVariableDefinition(PointOfInstantiation, Var); 675387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 675487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Update the type to the newly instantiated definition's type both 675587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // here and within the expression. 675687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (VarDecl *Def = Var->getDefinition()) { 675787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DRE->setDecl(Def); 675887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar QualType T = Def->getType(); 675987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar DRE->setType(T); 676087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // FIXME: Update the type on all intervening expressions. 676187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar E->setType(T); 676287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 676387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 676487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // We still go on to try to complete the type independently, as it 676587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // may also require instantiations or diagnostics if it remains 676687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // incomplete. 676787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 676887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 676987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 6770232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner} 6771232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner 6772e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// \brief Ensure that the type of the given expression is complete. 6773e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// 6774e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// This routine checks whether the expression \p E has a complete type. If the 6775e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// expression refers to an instantiable construct, that instantiation is 6776e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// performed as needed to complete its type. Furthermore 6777e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// Sema::RequireCompleteType is called for the expression's type (or in the 6778e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// case of a reference type, the referred-to type). 6779e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// 6780e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// \param E The expression whose type is required to be complete. 6781d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor/// \param Diagnoser The object that will emit a diagnostic if the type is 6782d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor/// incomplete. 6783e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// 6784e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// \returns \c true if the type of \p E is incomplete and diagnosed, \c false 6785e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// otherwise. 678687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarbool Sema::RequireCompleteExprType(Expr *E, TypeDiagnoser &Diagnoser) { 6787e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth QualType T = E->getType(); 6788e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 6789e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // Incomplete array types may be completed by the initializer attached to 67906aa7df9df93bcf2d6399f6e535ef74c132db40ecRichard Smith // their definitions. For static data members of class templates and for 67916aa7df9df93bcf2d6399f6e535ef74c132db40ecRichard Smith // variable templates, we need to instantiate the definition to get this 67926aa7df9df93bcf2d6399f6e535ef74c132db40ecRichard Smith // initializer and complete the type. 6793e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth if (T->isIncompleteArrayType()) { 679487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar completeExprArrayBound(E); 679587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar T = E->getType(); 6796e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth } 6797e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 6798e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // FIXME: Are there other cases which require instantiating something other 6799e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // than the type to complete the type of an expression? 6800e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 6801d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor return RequireCompleteType(E->getExprLoc(), T, Diagnoser); 6802d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor} 6803d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor 6804d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregorbool Sema::RequireCompleteExprType(Expr *E, unsigned DiagID) { 680587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar BoundTypeDiagnoser<> Diagnoser(DiagID); 6806d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor return RequireCompleteExprType(E, Diagnoser); 6807e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth} 6808e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 68091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// @brief Ensure that the type T is a complete type. 68104ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 68114ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// This routine checks whether the type @p T is complete in any 68124ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// context where a complete type is required. If @p T is a complete 681386447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// type, returns false. If @p T is a class template specialization, 681486447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// this routine then attempts to perform class template 681586447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// instantiation. If instantiation fails, or if @p T is incomplete 681686447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// and cannot be completed, issues the diagnostic @p diag (giving it 681786447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// the type @p T) and returns true. 68184ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 68194ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @param Loc The location in the source that the incomplete type 68204ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// diagnostic should refer to. 68214ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 68224ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @param T The type that this routine is examining for completeness. 68234ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 68244ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @returns @c true if @p T is incomplete and a diagnostic was emitted, 68254ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @c false otherwise. 682691a0cc913ecc5619b76d2e40742fd09725be8c56Anders Carlssonbool Sema::RequireCompleteType(SourceLocation Loc, QualType T, 6827f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor TypeDiagnoser &Diagnoser) { 682887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (RequireCompleteTypeImpl(Loc, T, &Diagnoser)) 6829658cd2c287b1a0b419f51cd18e5a48d4560d1c56David Blaikie return true; 6830658cd2c287b1a0b419f51cd18e5a48d4560d1c56David Blaikie if (const TagType *Tag = T->getAs<TagType>()) { 6831658cd2c287b1a0b419f51cd18e5a48d4560d1c56David Blaikie if (!Tag->getDecl()->isCompleteDefinitionRequired()) { 6832658cd2c287b1a0b419f51cd18e5a48d4560d1c56David Blaikie Tag->getDecl()->setCompleteDefinitionRequired(); 6833658cd2c287b1a0b419f51cd18e5a48d4560d1c56David Blaikie Consumer.HandleTagDeclRequiredDefinition(Tag->getDecl()); 6834658cd2c287b1a0b419f51cd18e5a48d4560d1c56David Blaikie } 6835658cd2c287b1a0b419f51cd18e5a48d4560d1c56David Blaikie } 6836658cd2c287b1a0b419f51cd18e5a48d4560d1c56David Blaikie return false; 6837658cd2c287b1a0b419f51cd18e5a48d4560d1c56David Blaikie} 6838658cd2c287b1a0b419f51cd18e5a48d4560d1c56David Blaikie 68396bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// \brief Determine whether there is any declaration of \p D that was ever a 68406bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// definition (perhaps before module merging) and is currently visible. 68416bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// \param D The definition of the entity. 68426bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// \param Suggested Filled in with the declaration that should be made visible 68436bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines/// in order to provide a definition of this entity. 684487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// \param OnlyNeedComplete If \c true, we only need the type to be complete, 684587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// not defined. This only matters for enums with a fixed underlying 684687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// type, since in all other cases, a type is complete if and only if it 684787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar/// is defined. 684887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainarbool Sema::hasVisibleDefinition(NamedDecl *D, NamedDecl **Suggested, 684987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool OnlyNeedComplete) { 68506bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // Easy case: if we don't have modules, all declarations are visible. 6851b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar if (!getLangOpts().Modules && !getLangOpts().ModulesLocalVisibility) 68526bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines return true; 68536bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 68546bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // If this definition was instantiated from a template, map back to the 68556bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // pattern from which it was instantiated. 6856b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar if (isa<TagDecl>(D) && cast<TagDecl>(D)->isBeingDefined()) { 6857b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // We're in the middle of defining it; this definition should be treated 6858b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar // as visible. 6859b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar return true; 6860b6d6993e6e6d3daf4d9876794254d20a134e37c2Pirama Arumuga Nainar } else if (auto *RD = dyn_cast<CXXRecordDecl>(D)) { 6861176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines if (auto *Pattern = RD->getTemplateInstantiationPattern()) 6862176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines RD = Pattern; 68636bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines D = RD->getDefinition(); 68646bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines } else if (auto *ED = dyn_cast<EnumDecl>(D)) { 68654967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (auto *Pattern = ED->getTemplateInstantiationPattern()) 68664967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar ED = Pattern; 686787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (OnlyNeedComplete && ED->isFixed()) { 686887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If the enum has a fixed underlying type, and we're only looking for a 686987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // complete type (not a definition), any visible declaration of it will 687087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // do. 6871c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines *Suggested = nullptr; 68726bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines for (auto *Redecl : ED->redecls()) { 687387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (isVisible(Redecl)) 68746bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines return true; 68756bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (Redecl->isThisDeclarationADefinition() || 68766bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines (Redecl->isCanonicalDecl() && !*Suggested)) 68776bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines *Suggested = Redecl; 68786bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines } 68796bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines return false; 68806bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines } 68816bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines D = ED->getDefinition(); 68826bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines } 68836bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines assert(D && "missing definition for pattern of instantiated definition"); 68846bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 68856bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines *Suggested = D; 688687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (isVisible(D)) 688787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return true; 688887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 688987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // The external source may have additional definitions of this type that are 689087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // visible, so complete the redeclaration chain now and ask again. 689187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (auto *Source = Context.getExternalSource()) { 689287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Source->CompleteRedeclChain(D); 689387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return isVisible(D); 689487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 689587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 689687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return false; 68976bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines} 68986bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 6899c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines/// Locks in the inheritance model for the given class and all of its bases. 6900c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hinesstatic void assignInheritanceModel(Sema &S, CXXRecordDecl *RD) { 6901c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines RD = RD->getMostRecentDecl(); 6902c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines if (!RD->hasAttr<MSInheritanceAttr>()) { 6903c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines MSInheritanceAttr::Spelling IM; 6904c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines 6905c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines switch (S.MSPointerToMemberRepresentationMethod) { 6906c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines case LangOptions::PPTMK_BestCase: 6907c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines IM = RD->calculateInheritanceModel(); 6908c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines break; 6909c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines case LangOptions::PPTMK_FullGeneralitySingleInheritance: 6910c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines IM = MSInheritanceAttr::Keyword_single_inheritance; 6911c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines break; 6912c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines case LangOptions::PPTMK_FullGeneralityMultipleInheritance: 6913c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines IM = MSInheritanceAttr::Keyword_multiple_inheritance; 6914c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines break; 6915c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines case LangOptions::PPTMK_FullGeneralityVirtualInheritance: 6916c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines IM = MSInheritanceAttr::Keyword_unspecified_inheritance; 6917c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines break; 6918c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines } 6919c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines 6920c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines RD->addAttr(MSInheritanceAttr::CreateImplicit( 6921c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines S.getASTContext(), IM, 6922c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines /*BestCase=*/S.MSPointerToMemberRepresentationMethod == 6923c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines LangOptions::PPTMK_BestCase, 6924c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines S.ImplicitMSInheritanceAttrLoc.isValid() 6925c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines ? S.ImplicitMSInheritanceAttrLoc 6926c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines : RD->getSourceRange())); 69274967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar S.Consumer.AssignInheritanceModel(RD); 6928c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines } 6929c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines} 6930c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines 6931658cd2c287b1a0b419f51cd18e5a48d4560d1c56David Blaikie/// \brief The implementation of RequireCompleteType 6932658cd2c287b1a0b419f51cd18e5a48d4560d1c56David Blaikiebool Sema::RequireCompleteTypeImpl(SourceLocation Loc, QualType T, 693387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TypeDiagnoser *Diagnoser) { 6934573d9c325279b6e156c7fde163ffe3629c62d596Douglas Gregor // FIXME: Add this assertion to make sure we always get instantiation points. 6935573d9c325279b6e156c7fde163ffe3629c62d596Douglas Gregor // assert(!Loc.isInvalid() && "Invalid location in RequireCompleteType"); 6936690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor // FIXME: Add this assertion to help us flush out problems with 6937690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor // checking for dependent types and type-dependent expressions. 6938690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor // 69391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // assert(!T->isDependentType() && 6940690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor // "Can't ask whether a dependent type is complete"); 6941690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor 694287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // We lock in the inheritance model once somebody has asked us to ensure 694387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // that a pointer-to-member type is complete. 694487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (Context.getTargetInfo().getCXXABI().isMicrosoft()) { 694587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (const MemberPointerType *MPTy = T->getAs<MemberPointerType>()) { 694687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!MPTy->getClass()->isDependentType()) { 694787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar (void)isCompleteType(Loc, QualType(MPTy->getClass(), 0)); 694887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar assignInheritanceModel(*this, MPTy->getMostRecentCXXRecordDecl()); 694987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 695087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 695187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 695287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 69536bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines NamedDecl *Def = nullptr; 69544967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar bool Incomplete = T->isIncompleteType(&Def); 69554967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 69564967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // Check that any necessary explicit specializations are visible. For an 69574967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // enum, we just need the declaration, so don't check this. 69584967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (Def && !isa<EnumDecl>(Def)) 69594967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar checkSpecializationVisibility(Loc, Def); 69604967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar 69614967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // If we have a complete type, we're done. 69624967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (!Incomplete) { 6963d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor // If we know about the definition but it is not visible, complain. 6964c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines NamedDecl *SuggestedDef = nullptr; 696587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (Def && 696687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar !hasVisibleDefinition(Def, &SuggestedDef, /*OnlyNeedComplete*/true)) { 696787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If the user is going to see an error here, recover by making the 696887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // definition visible. 696987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool TreatAsComplete = Diagnoser && !isSFINAEContext(); 697087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (Diagnoser) 69714967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar diagnoseMissingImport(Loc, SuggestedDef, MissingImportKind::Definition, 697287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /*Recover*/TreatAsComplete); 697387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return !TreatAsComplete; 6974651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines } 6975651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines 69764ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor return false; 6977d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor } 69784ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor 69796bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines const TagType *Tag = T->getAs<TagType>(); 69806bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines const ObjCInterfaceType *IFace = T->getAs<ObjCInterfaceType>(); 69816bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines 69826bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // If there's an unimported definition of this type in a module (for 6983b7165589b2eafc4b48d09a5914e21604ae580256Richard Smith // instance, because we forward declared it, then imported the definition), 6984b7165589b2eafc4b48d09a5914e21604ae580256Richard Smith // import that definition now. 69856bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // 6986b7165589b2eafc4b48d09a5914e21604ae580256Richard Smith // FIXME: What about other cases where an import extends a redeclaration 6987b7165589b2eafc4b48d09a5914e21604ae580256Richard Smith // chain for a declaration that can be accessed through a mechanism other 6988b7165589b2eafc4b48d09a5914e21604ae580256Richard Smith // than name lookup (eg, referenced in a template, or a variable whose type 6989b7165589b2eafc4b48d09a5914e21604ae580256Richard Smith // could be completed by the module)? 699087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // 699187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // FIXME: Should we map through to the base array element type before 699287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // checking for a tag type? 69936bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (Tag || IFace) { 69946bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines NamedDecl *D = 69956bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines Tag ? static_cast<NamedDecl *>(Tag->getDecl()) : IFace->getDecl(); 6996b7165589b2eafc4b48d09a5914e21604ae580256Richard Smith 6997bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan // Avoid diagnosing invalid decls as incomplete. 69986bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (D->isInvalidDecl()) 6999bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan return true; 7000bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan 7001bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan // Give the external AST source a chance to complete the type. 70026bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (auto *Source = Context.getExternalSource()) { 70036bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (Tag) 70046bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines Source->CompleteType(Tag->getDecl()); 70056bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines else 70066bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines Source->CompleteType(IFace->getDecl()); 700791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 70086bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // If the external source completed the type, go through the motions 70096bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines // again to ensure we're allowed to use the completed type. 70106bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines if (!T->isIncompleteType()) 70116bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines return RequireCompleteTypeImpl(Loc, T, Diagnoser); 7012bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan } 7013bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan } 701491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 7015d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor // If we have a class template specialization or a class member of a 7016923d56d436f750bc1f29db50e641078725558a1bSebastian Redl // class template specialization, or an array with known size of such, 7017923d56d436f750bc1f29db50e641078725558a1bSebastian Redl // try to instantiate it. 7018923d56d436f750bc1f29db50e641078725558a1bSebastian Redl QualType MaybeTemplate = T; 7019e656b8397f05fd1b7c4a735372f79a52f4e32be5Douglas Gregor while (const ConstantArrayType *Array 7020e656b8397f05fd1b7c4a735372f79a52f4e32be5Douglas Gregor = Context.getAsConstantArrayType(MaybeTemplate)) 7021923d56d436f750bc1f29db50e641078725558a1bSebastian Redl MaybeTemplate = Array->getElementType(); 7022923d56d436f750bc1f29db50e641078725558a1bSebastian Redl if (const RecordType *Record = MaybeTemplate->getAs<RecordType>()) { 702387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool Instantiated = false; 702487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar bool Diagnosed = false; 70252943aed177b33ae3f14273b11a7b398e5276ec62Douglas Gregor if (ClassTemplateSpecializationDecl *ClassTemplateSpec 7026d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor = dyn_cast<ClassTemplateSpecializationDecl>(Record->getDecl())) { 702787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (ClassTemplateSpec->getSpecializationKind() == TSK_Undeclared) { 702887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Diagnosed = InstantiateClassTemplateSpecialization( 702987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Loc, ClassTemplateSpec, TSK_ImplicitInstantiation, 703087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /*Complain=*/Diagnoser); 703187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Instantiated = true; 703287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 70331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else if (CXXRecordDecl *Rec 7034d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor = dyn_cast<CXXRecordDecl>(Record->getDecl())) { 7035564f4c5664f552becbd05407611a92754c40e641Richard Smith CXXRecordDecl *Pattern = Rec->getInstantiatedFromMemberClass(); 7036564f4c5664f552becbd05407611a92754c40e641Richard Smith if (!Rec->isBeingDefined() && Pattern) { 7037564f4c5664f552becbd05407611a92754c40e641Richard Smith MemberSpecializationInfo *MSI = Rec->getMemberSpecializationInfo(); 7038564f4c5664f552becbd05407611a92754c40e641Richard Smith assert(MSI && "Missing member specialization information?"); 7039357bbd022c1d340c8e255aea7a684ddb34bc76e5Douglas Gregor // This record was instantiated from a class within a template. 704087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (MSI->getTemplateSpecializationKind() != 704187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TSK_ExplicitSpecialization) { 704287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Diagnosed = InstantiateClass(Loc, Rec, Pattern, 704387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar getTemplateInstantiationArgs(Rec), 704487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar TSK_ImplicitInstantiation, 704587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar /*Complain=*/Diagnoser); 704687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Instantiated = true; 704787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 7048d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor } 7049d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor } 705087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 705187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (Instantiated) { 705287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // Instantiate* might have already complained that the template is not 705387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // defined, if we asked it to. 705487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (Diagnoser && Diagnosed) 705587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return true; 705687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // If we instantiated a definition, check that it's usable, even if 705787d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // instantiation produced an error, so that repeated calls to this 705887d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar // function give consistent answers. 705987d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!T->isIncompleteType()) 706087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar return RequireCompleteTypeImpl(Loc, T, Diagnoser); 706187d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar } 7062d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor } 70632943aed177b33ae3f14273b11a7b398e5276ec62Douglas Gregor 70644967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // FIXME: If we didn't instantiate a definition because of an explicit 70654967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar // specialization declaration, check that it's visible. 7066d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor 70674967a710c84587c654b56c828382219c3937dacbPirama Arumuga Nainar if (!Diagnoser) 7068cac18add73d095eaab600aefe27ea7174aec4922Nico Weber return true; 7069cac18add73d095eaab600aefe27ea7174aec4922Nico Weber 707087d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Diagnoser->diagnose(*this, Loc, T); 707191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 70724ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor // If the type was a forward declaration of a class/struct/union 707301620704304f819b82ecef769ec114e541a364d7Rafael Espindola // type, produce a note. 70744ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor if (Tag && !Tag->getDecl()->isInvalidDecl()) 70751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(Tag->getDecl()->getLocation(), 70764ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor Tag->isBeingDefined() ? diag::note_type_being_defined 70774ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor : diag::note_forward_declaration) 7078b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor << QualType(Tag, 0); 707991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 7080b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor // If the Objective-C class was a forward declaration, produce a note. 7081b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor if (IFace && !IFace->getDecl()->isInvalidDecl()) 7082b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor Diag(IFace->getDecl()->getLocation(), diag::note_forward_class); 70834ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor 70845d937b3fe7832f8ffa0a258d1b037c64708e97c1Kaelyn Uhrain // If we have external information that we can use to suggest a fix, 70855d937b3fe7832f8ffa0a258d1b037c64708e97c1Kaelyn Uhrain // produce a note. 70865d937b3fe7832f8ffa0a258d1b037c64708e97c1Kaelyn Uhrain if (ExternalSource) 70875d937b3fe7832f8ffa0a258d1b037c64708e97c1Kaelyn Uhrain ExternalSource->MaybeDiagnoseMissingCompleteType(Loc, T); 70885d937b3fe7832f8ffa0a258d1b037c64708e97c1Kaelyn Uhrain 70894ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor return true; 70904ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor} 7091e6258936178b4c52b43b3b9dbec13552961cd645Douglas Gregor 7092fe6b2d481d91140923f4541f273b253291884214Douglas Gregorbool Sema::RequireCompleteType(SourceLocation Loc, QualType T, 709391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier unsigned DiagID) { 709487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar BoundTypeDiagnoser<> Diagnoser(DiagID); 7095d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor return RequireCompleteType(Loc, T, Diagnoser); 7096fe6b2d481d91140923f4541f273b253291884214Douglas Gregor} 7097fe6b2d481d91140923f4541f273b253291884214Douglas Gregor 70986666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// \brief Get diagnostic %select index for tag kind for 70996666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// literal type diagnostic message. 71006666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// WARNING: Indexes apply to particular diagnostics only! 71016666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// 71026666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// \returns diagnostic %select index. 7103f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matosstatic unsigned getLiteralDiagFromTagKind(TagTypeKind Tag) { 71046666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos switch (Tag) { 7105f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matos case TTK_Struct: return 0; 7106f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matos case TTK_Interface: return 1; 7107f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matos case TTK_Class: return 2; 7108f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matos default: llvm_unreachable("Invalid tag kind for literal type diagnostic!"); 71096666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos } 71106666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos} 71116666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos 71129f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @brief Ensure that the type T is a literal type. 71139f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 71149f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// This routine checks whether the type @p T is a literal type. If @p T is an 71159f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// incomplete type, an attempt is made to complete it. If @p T is a literal 71169f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// type, or @p AllowIncompleteType is true and @p T is an incomplete type, 71179f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// returns false. Otherwise, this routine issues the diagnostic @p PD (giving 71189f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// it the type @p T), along with notes explaining why the type is not a 71199f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// literal type, and returns true. 71209f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 71219f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @param Loc The location in the source that the non-literal type 71229f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// diagnostic should refer to. 71239f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 71249f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @param T The type that this routine is examining for literalness. 71259f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 7126f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor/// @param Diagnoser Emits a diagnostic if T is not a literal type. 71279f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 71289f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @returns @c true if @p T is not a literal type and a diagnostic was emitted, 71299f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @c false otherwise. 71309f569cca2a4c5fb6026005434e27025b9e71309dRichard Smithbool Sema::RequireLiteralType(SourceLocation Loc, QualType T, 7131f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor TypeDiagnoser &Diagnoser) { 71329f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith assert(!T->isDependentType() && "type should not be dependent"); 71339f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 7134ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman QualType ElemType = Context.getBaseElementType(T); 713587d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if ((isCompleteType(Loc, ElemType) || ElemType->isVoidType()) && 713687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar T->isLiteralType(Context)) 71379f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return false; 71389f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 7139f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor Diagnoser.diagnose(*this, Loc, T); 71409f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 71419f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith if (T->isVariableArrayType()) 71429f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 71439f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 7144ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman const RecordType *RT = ElemType->getAs<RecordType>(); 71459f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith if (!RT) 71469f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 71479f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 71489f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith const CXXRecordDecl *RD = cast<CXXRecordDecl>(RT->getDecl()); 71499f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 7150c799a6a5c884831c3c3ea57d30fbe4ab35709d49Richard Smith // A partially-defined class type can't be a literal type, because a literal 7151c799a6a5c884831c3c3ea57d30fbe4ab35709d49Richard Smith // class type must have a trivial destructor (which can't be checked until 7152c799a6a5c884831c3c3ea57d30fbe4ab35709d49Richard Smith // the class definition is complete). 715387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (RequireCompleteType(Loc, ElemType, diag::note_non_literal_incomplete, T)) 7154ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman return true; 7155ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman 71569f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith // If the class has virtual base classes, then it's not an aggregate, and 715786c3ae46250cdcc57778c27826060779a92f3815Richard Smith // cannot have any constexpr constructors or a trivial default constructor, 715886c3ae46250cdcc57778c27826060779a92f3815Richard Smith // so is non-literal. This is better to diagnose than the resulting absence 715986c3ae46250cdcc57778c27826060779a92f3815Richard Smith // of constexpr constructors. 71609f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith if (RD->getNumVBases()) { 71619f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith Diag(RD->getLocation(), diag::note_non_literal_virtual_base) 71626666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos << getLiteralDiagFromTagKind(RD->getTagKind()) << RD->getNumVBases(); 7163651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines for (const auto &I : RD->vbases()) 7164651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines Diag(I.getLocStart(), diag::note_constexpr_virtual_base_here) 7165651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines << I.getSourceRange(); 716686c3ae46250cdcc57778c27826060779a92f3815Richard Smith } else if (!RD->isAggregate() && !RD->hasConstexprNonCopyMoveConstructor() && 716786c3ae46250cdcc57778c27826060779a92f3815Richard Smith !RD->hasTrivialDefaultConstructor()) { 71689f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith Diag(RD->getLocation(), diag::note_non_literal_no_constexpr_ctors) << RD; 71699f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } else if (RD->hasNonLiteralTypeFieldsOrBases()) { 7170651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines for (const auto &I : RD->bases()) { 7171651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines if (!I.getType()->isLiteralType(Context)) { 7172651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines Diag(I.getLocStart(), 71739f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith diag::note_non_literal_base_class) 7174651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines << RD << I.getType() << I.getSourceRange(); 71759f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 71769f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 71779f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 7178651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines for (const auto *I : RD->fields()) { 7179a10b97898ee6339c3110e6ca33f178ff52f05238Richard Smith if (!I->getType()->isLiteralType(Context) || 7180262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie I->getType().isVolatileQualified()) { 7181262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie Diag(I->getLocation(), diag::note_non_literal_field) 7182651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines << RD << I << I->getType() 7183262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie << I->getType().isVolatileQualified(); 71849f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 71859f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 71869f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 71879f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } else if (!RD->hasTrivialDestructor()) { 71889f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith // All fields and bases are of literal types, so have trivial destructors. 71899f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith // If this class's destructor is non-trivial it must be user-declared. 71909f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith CXXDestructorDecl *Dtor = RD->getDestructor(); 71919f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith assert(Dtor && "class has literal fields and bases but no dtor?"); 71929f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith if (!Dtor) 71939f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 71949f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 71959f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith Diag(Dtor->getLocation(), Dtor->isUserProvided() ? 71969f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith diag::note_non_literal_user_provided_dtor : 71979f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith diag::note_non_literal_nontrivial_dtor) << RD; 7198ac71351acdefc9de0c770c1d717e621ac9e684bfRichard Smith if (!Dtor->isUserProvided()) 7199ac71351acdefc9de0c770c1d717e621ac9e684bfRichard Smith SpecialMemberIsTrivial(Dtor, CXXDestructor, /*Diagnose*/true); 72009f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 72019f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 72029f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 72039f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith} 72049f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 720591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosierbool Sema::RequireLiteralType(SourceLocation Loc, QualType T, unsigned DiagID) { 720687d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar BoundTypeDiagnoser<> Diagnoser(DiagID); 7207f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor return RequireLiteralType(Loc, T, Diagnoser); 7208f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor} 7209f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor 7210465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara/// \brief Retrieve a version of the type 'T' that is elaborated by Keyword 7211465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara/// and qualified by the nested-name-specifier contained in SS. 7212465d41b92b2c862f3062c412a0538db65c6a2661Abramo BagnaraQualType Sema::getElaboratedType(ElaboratedTypeKeyword Keyword, 7213465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara const CXXScopeSpec &SS, QualType T) { 7214465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara if (T.isNull()) 7215e6258936178b4c52b43b3b9dbec13552961cd645Douglas Gregor return T; 7216465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara NestedNameSpecifier *NNS; 7217e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara if (SS.isValid()) 7218651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines NNS = SS.getScopeRep(); 7219465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara else { 7220465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara if (Keyword == ETK_None) 7221465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara return T; 72226bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines NNS = nullptr; 7223465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara } 7224465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara return Context.getElaboratedType(Keyword, NNS, T); 7225e6258936178b4c52b43b3b9dbec13552961cd645Douglas Gregor} 7226af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson 72272a984cad5ac3fdceeff2bd99daa7b90979313475John McCallQualType Sema::BuildTypeofExprType(Expr *E, SourceLocation Loc) { 7228fb8721ce4c6fef3739b1cbd1e38e3f1949462033John McCall ExprResult ER = CheckPlaceholderExpr(E); 72292a984cad5ac3fdceeff2bd99daa7b90979313475John McCall if (ER.isInvalid()) return QualType(); 7230c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines E = ER.get(); 72312a984cad5ac3fdceeff2bd99daa7b90979313475John McCall 723287d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar if (!getLangOpts().CPlusPlus && E->refersToBitField()) 723387d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar Diag(E->getExprLoc(), diag::err_sizeof_alignof_typeof_bitfield) << 2; 723487d948ecccffea9e9e37d0d053b246e2d6d6c47bPirama Arumuga Nainar 72352b1d51bcf891f8887759aebb4b9e78dee8542e6dFariborz Jahanian if (!E->isTypeDependent()) { 72362b1d51bcf891f8887759aebb4b9e78dee8542e6dFariborz Jahanian QualType T = E->getType(); 7237aca7f7bab0102341863a0d1bdb048d69213ae362Fariborz Jahanian if (const TagType *TT = T->getAs<TagType>()) 7238aca7f7bab0102341863a0d1bdb048d69213ae362Fariborz Jahanian DiagnoseUseOfDecl(TT->getDecl(), E->getExprLoc()); 72392b1d51bcf891f8887759aebb4b9e78dee8542e6dFariborz Jahanian } 7240af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson return Context.getTypeOfExprType(E); 7241af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson} 7242af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson 7243f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor/// getDecltypeForExpr - Given an expr, will return the decltype for 7244f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor/// that expression, according to the rules in C++11 7245f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor/// [dcl.type.simple]p4 and C++11 [expr.lambda.prim]p18. 7246f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregorstatic QualType getDecltypeForExpr(Sema &S, Expr *E) { 7247f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (E->isTypeDependent()) 7248f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return S.Context.DependentTy; 7249f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor 72506d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // C++11 [dcl.type.simple]p4: 72516d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // The type denoted by decltype(e) is defined as follows: 72526d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // 72536d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // - if e is an unparenthesized id-expression or an unparenthesized class 725491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // member access (5.2.5), decltype(e) is the type of the entity named 725591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // by e. If there is no such entity, or if e names a set of overloaded 72566d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // functions, the program is ill-formed; 725784dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor // 725884dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor // We apply the same rules for Objective-C ivar and property references. 7259f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) { 7260f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (const ValueDecl *VD = dyn_cast<ValueDecl>(DRE->getDecl())) 7261f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return VD->getType(); 726284dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor } else if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) { 7263f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (const FieldDecl *FD = dyn_cast<FieldDecl>(ME->getMemberDecl())) 7264f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return FD->getType(); 726584dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor } else if (const ObjCIvarRefExpr *IR = dyn_cast<ObjCIvarRefExpr>(E)) { 726684dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor return IR->getDecl()->getType(); 726784dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor } else if (const ObjCPropertyRefExpr *PR = dyn_cast<ObjCPropertyRefExpr>(E)) { 726884dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor if (PR->isExplicitProperty()) 726984dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor return PR->getExplicitProperty()->getType(); 7270176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines } else if (auto *PE = dyn_cast<PredefinedExpr>(E)) { 7271176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines return PE->getType(); 7272f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 727384dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor 7274f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // C++11 [expr.lambda.prim]p18: 7275f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // Every occurrence of decltype((x)) where x is a possibly 7276f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // parenthesized id-expression that names an entity of automatic 7277f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // storage duration is treated as if x were transformed into an 7278f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // access to a corresponding data member of the closure type that 7279f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // would have been declared if x were an odr-use of the denoted 7280f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // entity. 7281f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor using namespace sema; 7282f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (S.getCurLambda()) { 7283f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (isa<ParenExpr>(E)) { 7284f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParens())) { 7285f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (VarDecl *Var = dyn_cast<VarDecl>(DRE->getDecl())) { 728668932845a432d2a1dbbc57a84fd85bbb37c90487Douglas Gregor QualType T = S.getCapturedDeclRefType(Var, DRE->getLocation()); 728768932845a432d2a1dbbc57a84fd85bbb37c90487Douglas Gregor if (!T.isNull()) 728868932845a432d2a1dbbc57a84fd85bbb37c90487Douglas Gregor return S.Context.getLValueReferenceType(T); 7289f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 7290f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 7291f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 7292f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 7293f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor 7294f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor 72956d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // C++11 [dcl.type.simple]p4: 72966d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // [...] 72976d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor QualType T = E->getType(); 72986d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor switch (E->getValueKind()) { 729991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // - otherwise, if e is an xvalue, decltype(e) is T&&, where T is the 73006d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // type of e; 73016d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor case VK_XValue: T = S.Context.getRValueReferenceType(T); break; 730291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // - otherwise, if e is an lvalue, decltype(e) is T&, where T is the 73036d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // type of e; 73046d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor case VK_LValue: T = S.Context.getLValueReferenceType(T); break; 73056d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // - otherwise, decltype(e) is the type of e. 73066d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor case VK_RValue: break; 73076d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor } 730891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 7309f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return T; 7310f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor} 7311f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor 73120e2c34f92f00628d48968dfea096d36381f494cbStephen HinesQualType Sema::BuildDecltypeType(Expr *E, SourceLocation Loc, 73130e2c34f92f00628d48968dfea096d36381f494cbStephen Hines bool AsUnevaluated) { 7314fb8721ce4c6fef3739b1cbd1e38e3f1949462033John McCall ExprResult ER = CheckPlaceholderExpr(E); 73152a984cad5ac3fdceeff2bd99daa7b90979313475John McCall if (ER.isInvalid()) return QualType(); 7316c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines E = ER.get(); 731791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 73180e2c34f92f00628d48968dfea096d36381f494cbStephen Hines if (AsUnevaluated && ActiveTemplateInstantiations.empty() && 73190e2c34f92f00628d48968dfea096d36381f494cbStephen Hines E->HasSideEffects(Context, false)) { 73200e2c34f92f00628d48968dfea096d36381f494cbStephen Hines // The expression operand for decltype is in an unevaluated expression 73210e2c34f92f00628d48968dfea096d36381f494cbStephen Hines // context, so side effects could result in unintended consequences. 73220e2c34f92f00628d48968dfea096d36381f494cbStephen Hines Diag(E->getExprLoc(), diag::warn_side_effects_unevaluated_context); 73230e2c34f92f00628d48968dfea096d36381f494cbStephen Hines } 73240e2c34f92f00628d48968dfea096d36381f494cbStephen Hines 7325f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return Context.getDecltypeType(E, getDecltypeForExpr(*this, E)); 7326af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson} 7327ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt 7328ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean HuntQualType Sema::BuildUnaryTransformType(QualType BaseType, 7329ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt UnaryTransformType::UTTKind UKind, 7330ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt SourceLocation Loc) { 7331ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt switch (UKind) { 7332ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt case UnaryTransformType::EnumUnderlyingType: 7333ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt if (!BaseType->isDependentType() && !BaseType->isEnumeralType()) { 7334ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Diag(Loc, diag::err_only_enums_have_underlying_types); 7335ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt return QualType(); 7336ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } else { 7337ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt QualType Underlying = BaseType; 7338ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt if (!BaseType->isDependentType()) { 7339c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines // The enum could be incomplete if we're parsing its definition or 7340c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines // recovering from an error. 7341c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines NamedDecl *FwdDecl = nullptr; 7342c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines if (BaseType->isIncompleteType(&FwdDecl)) { 7343c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines Diag(Loc, diag::err_underlying_type_of_incomplete_enum) << BaseType; 7344c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines Diag(FwdDecl->getLocation(), diag::note_forward_declaration) << FwdDecl; 7345c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines return QualType(); 7346c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines } 7347c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines 7348ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt EnumDecl *ED = BaseType->getAs<EnumType>()->getDecl(); 7349ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt assert(ED && "EnumType has no EnumDecl"); 7350c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines 7351ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt DiagnoseUseOfDecl(ED, Loc); 7352c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines 7353ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Underlying = ED->getIntegerType(); 7354c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines assert(!Underlying.isNull()); 7355ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } 7356ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt return Context.getUnaryTransformType(BaseType, Underlying, 7357ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt UnaryTransformType::EnumUnderlyingType); 7358ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } 7359ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } 7360ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt llvm_unreachable("unknown unary transform type"); 7361ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt} 7362b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman 7363b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli FriedmanQualType Sema::BuildAtomicType(QualType T, SourceLocation Loc) { 7364b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman if (!T->isDependentType()) { 73658327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith // FIXME: It isn't entirely clear whether incomplete atomic types 73668327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith // are allowed or not; for simplicity, ban them for the moment. 7367d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor if (RequireCompleteType(Loc, T, diag::err_atomic_specifier_bad_type, 0)) 73688327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith return QualType(); 73698327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith 7370b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman int DisallowedKind = -1; 73718327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith if (T->isArrayType()) 7372b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 1; 7373b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (T->isFunctionType()) 7374b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 2; 7375b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (T->isReferenceType()) 7376b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 3; 7377b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (T->isAtomicType()) 7378b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 4; 7379b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (T.hasQualifiers()) 7380b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 5; 7381b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (!T.isTriviallyCopyableType(Context)) 7382b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman // Some other non-trivially-copyable type (probably a C++ class) 7383b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 6; 7384b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman 7385b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman if (DisallowedKind != -1) { 7386b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman Diag(Loc, diag::err_atomic_specifier_bad_type) << DisallowedKind << T; 7387b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman return QualType(); 7388b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman } 7389b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman 7390b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman // FIXME: Do we need any handling for ARC here? 7391b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman } 7392b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman 7393b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman // Build the pointer type. 7394b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman return Context.getAtomicType(T); 7395b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman} 7396