SemaType.cpp revision 5c52166525f8714c3e3a979b156ec23426947fd3
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 142d88708cbe4e4ec5e04e4acb6bd7f5be68557379John McCall#include "clang/Sema/SemaInternal.h" 155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/AST/ASTContext.h" 1636f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor#include "clang/AST/ASTMutationListener.h" 17a8f32e0965ee19ecc53cd796e34268377a20357cDouglas Gregor#include "clang/AST/CXXInheritance.h" 18980e508ca70d6de75d2abfd96b4681fc98bb2698Steve Naroff#include "clang/AST/DeclObjC.h" 192943aed177b33ae3f14273b11a7b398e5276ec62Douglas Gregor#include "clang/AST/DeclTemplate.h" 2055fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/AST/Expr.h" 214adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis#include "clang/AST/TypeLoc.h" 2251bd803fbdade51d674598ed45da3d54190a656cJohn McCall#include "clang/AST/TypeLocVisitor.h" 2355fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Basic/OpenCL.h" 2491a0cc913ecc5619b76d2e40742fd09725be8c56Anders Carlsson#include "clang/Basic/PartialDiagnostic.h" 25d18f9f965bcfe56edcdf9b0d8375ffaad9866b3fCharles Davis#include "clang/Basic/TargetInfo.h" 262792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall#include "clang/Lex/Preprocessor.h" 27bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman#include "clang/Parse/ParseDiagnostic.h" 2819510856727e0e14a3696b2a72c35163bff2a71fJohn McCall#include "clang/Sema/DeclSpec.h" 29f85e193739c953358c865005855253af4f68a497John McCall#include "clang/Sema/DelayedDiagnostic.h" 30d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor#include "clang/Sema/Lookup.h" 3155fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Sema/ScopeInfo.h" 3255fc873017f10f6f566b182b70f6fc22aefa3464Chandler Carruth#include "clang/Sema/Template.h" 334994d2d50ceacdc8908f750c55589c0a20942a0aSebastian Redl#include "llvm/ADT/SmallPtrSet.h" 3487c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor#include "llvm/Support/ErrorHandling.h" 355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 375db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner/// isOmittedBlockReturnType - Return true if this declarator is missing a 3891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier/// return type because this is a omitted return type on a block literal. 398ce35b095e8fca45e04c1bda14ed0548ce7536adSebastian Redlstatic bool isOmittedBlockReturnType(const Declarator &D) { 405db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner if (D.getContext() != Declarator::BlockLiteralContext || 418ce35b095e8fca45e04c1bda14ed0548ce7536adSebastian Redl D.getDeclSpec().hasTypeSpecifier()) 425db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner return false; 4391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 445db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner if (D.getNumTypeObjects() == 0) 45a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner return true; // ^{ ... } 4691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 475db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner if (D.getNumTypeObjects() == 1 && 485db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner D.getTypeObject(0).Kind == DeclaratorChunk::Function) 49a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner return true; // ^(int X, float Y) { ... } 5091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 515db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner return false; 525db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner} 535db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner 542792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall/// diagnoseBadTypeAttribute - Diagnoses a type attribute which 552792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall/// doesn't apply to the given type. 562792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCallstatic void diagnoseBadTypeAttribute(Sema &S, const AttributeList &attr, 572792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall QualType type) { 58108f756bebd991eaa980cfb9994353612a2e5ff6Chandler Carruth bool useExpansionLoc = false; 592792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 602792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall unsigned diagID = 0; 612792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall switch (attr.getKind()) { 628e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ObjCGC: 632792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall diagID = diag::warn_pointer_attribute_wrong_type; 64108f756bebd991eaa980cfb9994353612a2e5ff6Chandler Carruth useExpansionLoc = true; 652792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall break; 662792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 678e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ObjCOwnership: 6805d4876a64865e34366b58fc8a6848c3cde895d9Argyrios Kyrtzidis diagID = diag::warn_objc_object_attribute_wrong_type; 69108f756bebd991eaa980cfb9994353612a2e5ff6Chandler Carruth useExpansionLoc = true; 7005d4876a64865e34366b58fc8a6848c3cde895d9Argyrios Kyrtzidis break; 7105d4876a64865e34366b58fc8a6848c3cde895d9Argyrios Kyrtzidis 722792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall default: 732792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall // Assume everything else was a function attribute. 742792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall diagID = diag::warn_function_attribute_wrong_type; 752792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall break; 762792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall } 772792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 782792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall SourceLocation loc = attr.getLoc(); 795f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef name = attr.getName()->getName(); 802792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 812792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall // The GC attributes are usually written with macros; special-case them. 82108f756bebd991eaa980cfb9994353612a2e5ff6Chandler Carruth if (useExpansionLoc && loc.isMacroID() && attr.getParameterName()) { 83834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall if (attr.getParameterName()->isStr("strong")) { 84834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall if (S.findMacroSpelling(loc, "__strong")) name = "__strong"; 85834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall } else if (attr.getParameterName()->isStr("weak")) { 86834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall if (S.findMacroSpelling(loc, "__weak")) name = "__weak"; 872792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall } 882792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall } 892792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 902792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall S.Diag(loc, diagID) << name << type; 912792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall} 922792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 93711c52bb20d0c69063b52a99826fb7d2835501f1John McCall// objc_gc applies to Objective-C pointers or, otherwise, to the 94711c52bb20d0c69063b52a99826fb7d2835501f1John McCall// smallest available pointer type (i.e. 'void*' in 'void**'). 95711c52bb20d0c69063b52a99826fb7d2835501f1John McCall#define OBJC_POINTER_TYPE_ATTRS_CASELIST \ 968e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ObjCGC: \ 978e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ObjCOwnership 98711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 99711c52bb20d0c69063b52a99826fb7d2835501f1John McCall// Function type attributes. 100711c52bb20d0c69063b52a99826fb7d2835501f1John McCall#define FUNCTION_TYPE_ATTRS_CASELIST \ 1018e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_NoReturn: \ 1028e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_CDecl: \ 1038e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_FastCall: \ 1048e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_StdCall: \ 1058e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ThisCall: \ 1068e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_Pascal: \ 1078e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_Regparm: \ 108263366f9241366f29ba65b703120f302490c39ffDerek Schuff case AttributeList::AT_Pcs: \ 10938980086c0f791e8c23cc882574f18e5b4a87db6Guy Benyei case AttributeList::AT_PnaclCall: \ 11038980086c0f791e8c23cc882574f18e5b4a87db6Guy Benyei case AttributeList::AT_IntelOclBicc \ 111711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 112711c52bb20d0c69063b52a99826fb7d2835501f1John McCallnamespace { 113711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// An object which stores processing state for the entire 114711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// GetTypeForDeclarator process. 115711c52bb20d0c69063b52a99826fb7d2835501f1John McCall class TypeProcessingState { 116711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Sema &sema; 117711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 118711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// The declarator being processed. 119711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator; 120711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 121711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// The index of the declarator chunk we're currently processing. 122711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// May be the total number of valid chunks, indicating the 123711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// DeclSpec. 124711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned chunkIndex; 125711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 126711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// Whether there are non-trivial modifications to the decl spec. 127711c52bb20d0c69063b52a99826fb7d2835501f1John McCall bool trivial; 128711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 1297ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall /// Whether we saved the attributes in the decl spec. 1307ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall bool hasSavedAttrs; 1317ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall 132711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// The original set of attributes on the DeclSpec. 1335f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<AttributeList*, 2> savedAttrs; 134711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 135711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// A list of attributes to diagnose the uselessness of when the 136711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// processing is complete. 1375f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<AttributeList*, 2> ignoredTypeAttrs; 138711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 139711c52bb20d0c69063b52a99826fb7d2835501f1John McCall public: 140711c52bb20d0c69063b52a99826fb7d2835501f1John McCall TypeProcessingState(Sema &sema, Declarator &declarator) 141711c52bb20d0c69063b52a99826fb7d2835501f1John McCall : sema(sema), declarator(declarator), 142711c52bb20d0c69063b52a99826fb7d2835501f1John McCall chunkIndex(declarator.getNumTypeObjects()), 1437ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall trivial(true), hasSavedAttrs(false) {} 144711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 145711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Sema &getSema() const { 146711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return sema; 147711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 148711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 149711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &getDeclarator() const { 150711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return declarator; 151711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 152711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 153711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned getCurrentChunkIndex() const { 154711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return chunkIndex; 155711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 156711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 157711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void setCurrentChunkIndex(unsigned idx) { 158711c52bb20d0c69063b52a99826fb7d2835501f1John McCall assert(idx <= declarator.getNumTypeObjects()); 159711c52bb20d0c69063b52a99826fb7d2835501f1John McCall chunkIndex = idx; 160711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 161711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 162711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *&getCurrentAttrListRef() const { 163711c52bb20d0c69063b52a99826fb7d2835501f1John McCall assert(chunkIndex <= declarator.getNumTypeObjects()); 164711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (chunkIndex == declarator.getNumTypeObjects()) 165711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return getMutableDeclSpec().getAttributes().getListRef(); 166711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return declarator.getTypeObject(chunkIndex).getAttrListRef(); 167711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 168711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 169711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// Save the current set of attributes on the DeclSpec. 170711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void saveDeclSpecAttrs() { 171711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Don't try to save them multiple times. 1727ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall if (hasSavedAttrs) return; 173711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 174711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclSpec &spec = getMutableDeclSpec(); 175711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (AttributeList *attr = spec.getAttributes().getList(); attr; 176711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr = attr->getNext()) 177711c52bb20d0c69063b52a99826fb7d2835501f1John McCall savedAttrs.push_back(attr); 178711c52bb20d0c69063b52a99826fb7d2835501f1John McCall trivial &= savedAttrs.empty(); 1797ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall hasSavedAttrs = true; 180711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 181711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 182711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// Record that we had nowhere to put the given type attribute. 183711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// We will diagnose such attributes later. 184711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void addIgnoredTypeAttr(AttributeList &attr) { 185711c52bb20d0c69063b52a99826fb7d2835501f1John McCall ignoredTypeAttrs.push_back(&attr); 186711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 187711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 188711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// Diagnose all the ignored type attributes, given that the 189711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// declarator worked out to the given type. 190711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void diagnoseIgnoredTypeAttrs(QualType type) const { 1915f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<AttributeList*>::const_iterator 192711c52bb20d0c69063b52a99826fb7d2835501f1John McCall i = ignoredTypeAttrs.begin(), e = ignoredTypeAttrs.end(); 1932792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall i != e; ++i) 1942792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall diagnoseBadTypeAttribute(getSema(), **i, type); 195711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 196711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 197711c52bb20d0c69063b52a99826fb7d2835501f1John McCall ~TypeProcessingState() { 198711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (trivial) return; 199711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 200711c52bb20d0c69063b52a99826fb7d2835501f1John McCall restoreDeclSpecAttrs(); 201711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 202711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 203711c52bb20d0c69063b52a99826fb7d2835501f1John McCall private: 204711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclSpec &getMutableDeclSpec() const { 205711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return const_cast<DeclSpec&>(declarator.getDeclSpec()); 206711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 207711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 208711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void restoreDeclSpecAttrs() { 2097ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall assert(hasSavedAttrs); 2107ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall 2117ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall if (savedAttrs.empty()) { 2127ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall getMutableDeclSpec().getAttributes().set(0); 2137ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall return; 2147ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall } 2157ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall 216711c52bb20d0c69063b52a99826fb7d2835501f1John McCall getMutableDeclSpec().getAttributes().set(savedAttrs[0]); 217711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = 0, e = savedAttrs.size() - 1; i != e; ++i) 218711c52bb20d0c69063b52a99826fb7d2835501f1John McCall savedAttrs[i]->setNext(savedAttrs[i+1]); 219711c52bb20d0c69063b52a99826fb7d2835501f1John McCall savedAttrs.back()->setNext(0); 220711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 221711c52bb20d0c69063b52a99826fb7d2835501f1John McCall }; 222711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 223711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// Basically std::pair except that we really want to avoid an 224711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// implicit operator= for safety concerns. It's also a minor 225711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// link-time optimization for this to be a private type. 226711c52bb20d0c69063b52a99826fb7d2835501f1John McCall struct AttrAndList { 227711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// The attribute. 228711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &first; 229711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 230711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// The head of the list the attribute is currently in. 231711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *&second; 232711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 233711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttrAndList(AttributeList &attr, AttributeList *&head) 234711c52bb20d0c69063b52a99826fb7d2835501f1John McCall : first(attr), second(head) {} 235711c52bb20d0c69063b52a99826fb7d2835501f1John McCall }; 23604a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall} 23704a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 238711c52bb20d0c69063b52a99826fb7d2835501f1John McCallnamespace llvm { 239711c52bb20d0c69063b52a99826fb7d2835501f1John McCall template <> struct isPodLike<AttrAndList> { 240711c52bb20d0c69063b52a99826fb7d2835501f1John McCall static const bool value = true; 241711c52bb20d0c69063b52a99826fb7d2835501f1John McCall }; 242711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 243711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 244711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void spliceAttrIntoList(AttributeList &attr, AttributeList *&head) { 245711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setNext(head); 246711c52bb20d0c69063b52a99826fb7d2835501f1John McCall head = &attr; 247711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 248711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 249711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void spliceAttrOutOfList(AttributeList &attr, AttributeList *&head) { 250711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (head == &attr) { 251711c52bb20d0c69063b52a99826fb7d2835501f1John McCall head = attr.getNext(); 252711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 25304a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall } 254711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 255711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *cur = head; 256711c52bb20d0c69063b52a99826fb7d2835501f1John McCall while (true) { 257711c52bb20d0c69063b52a99826fb7d2835501f1John McCall assert(cur && cur->getNext() && "ran out of attrs?"); 258711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (cur->getNext() == &attr) { 259711c52bb20d0c69063b52a99826fb7d2835501f1John McCall cur->setNext(attr.getNext()); 260711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 261711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 262711c52bb20d0c69063b52a99826fb7d2835501f1John McCall cur = cur->getNext(); 263711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 264711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 265711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 266711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void moveAttrFromListToList(AttributeList &attr, 267711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *&fromList, 268711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *&toList) { 269711c52bb20d0c69063b52a99826fb7d2835501f1John McCall spliceAttrOutOfList(attr, fromList); 270711c52bb20d0c69063b52a99826fb7d2835501f1John McCall spliceAttrIntoList(attr, toList); 271711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 272711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 273f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith/// The location of a type attribute. 274f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smithenum TypeAttrLocation { 275f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith /// The attribute is in the decl-specifier-seq. 276f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith TAL_DeclSpec, 277f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith /// The attribute is part of a DeclaratorChunk. 278f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith TAL_DeclChunk, 279f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith /// The attribute is immediately after the declaration's name. 280f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith TAL_DeclName 281f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith}; 282f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith 283711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void processTypeAttrs(TypeProcessingState &state, 284f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith QualType &type, TypeAttrLocation TAL, 285711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *attrs); 286711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 287711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleFunctionTypeAttr(TypeProcessingState &state, 288711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 289711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &type); 290711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 291711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleObjCGCTypeAttr(TypeProcessingState &state, 292711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, QualType &type); 293711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 294b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidisstatic bool handleObjCOwnershipTypeAttr(TypeProcessingState &state, 295f85e193739c953358c865005855253af4f68a497John McCall AttributeList &attr, QualType &type); 296f85e193739c953358c865005855253af4f68a497John McCall 297711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleObjCPointerTypeAttr(TypeProcessingState &state, 298711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, QualType &type) { 2998e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr.getKind() == AttributeList::AT_ObjCGC) 300f85e193739c953358c865005855253af4f68a497John McCall return handleObjCGCTypeAttr(state, attr, type); 3018e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt assert(attr.getKind() == AttributeList::AT_ObjCOwnership); 302b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis return handleObjCOwnershipTypeAttr(state, attr, type); 303711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 304711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 305711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Given that an objc_gc attribute was written somewhere on a 306711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// declaration *other* than on the declarator itself (for which, use 307711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// distributeObjCPointerTypeAttrFromDeclarator), and given that it 308711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// didn't apply in whatever position it was written in, try to move 309711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// it to a more appropriate position. 310711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void distributeObjCPointerTypeAttr(TypeProcessingState &state, 311711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 312711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType type) { 313711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 314711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = state.getCurrentChunkIndex(); i != 0; --i) { 315711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &chunk = declarator.getTypeObject(i-1); 316711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (chunk.Kind) { 317711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Pointer: 318711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::BlockPointer: 319711c52bb20d0c69063b52a99826fb7d2835501f1John McCall moveAttrFromListToList(attr, state.getCurrentAttrListRef(), 320711c52bb20d0c69063b52a99826fb7d2835501f1John McCall chunk.getAttrListRef()); 321711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 322711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 323711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Paren: 324711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Array: 325711c52bb20d0c69063b52a99826fb7d2835501f1John McCall continue; 326711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 327711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Don't walk through these. 328711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Reference: 329711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Function: 330711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::MemberPointer: 331711c52bb20d0c69063b52a99826fb7d2835501f1John McCall goto error; 332711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 333711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 334711c52bb20d0c69063b52a99826fb7d2835501f1John McCall error: 3352792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 3362792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall diagnoseBadTypeAttribute(state.getSema(), attr, type); 337711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 338711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 339711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Distribute an objc_gc type attribute that was written on the 340711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// declarator. 341711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void 342711c52bb20d0c69063b52a99826fb7d2835501f1John McCalldistributeObjCPointerTypeAttrFromDeclarator(TypeProcessingState &state, 343711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 344711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 345711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 346711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 347711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // objc_gc goes on the innermost pointer to something that's not a 348711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // pointer. 349711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned innermost = -1U; 350711c52bb20d0c69063b52a99826fb7d2835501f1John McCall bool considerDeclSpec = true; 351711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = 0, e = declarator.getNumTypeObjects(); i != e; ++i) { 352711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &chunk = declarator.getTypeObject(i); 353711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (chunk.Kind) { 354711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Pointer: 355711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::BlockPointer: 356711c52bb20d0c69063b52a99826fb7d2835501f1John McCall innermost = i; 357ae278a3a57595349a411f6474938d4dd1b263a0eJohn McCall continue; 358711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 359711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Reference: 360711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::MemberPointer: 361711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Paren: 362711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Array: 363711c52bb20d0c69063b52a99826fb7d2835501f1John McCall continue; 364711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 365711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Function: 366711c52bb20d0c69063b52a99826fb7d2835501f1John McCall considerDeclSpec = false; 367711c52bb20d0c69063b52a99826fb7d2835501f1John McCall goto done; 368711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 369711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 370711c52bb20d0c69063b52a99826fb7d2835501f1John McCall done: 371711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 372711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // That might actually be the decl spec if we weren't blocked by 373711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // anything in the declarator. 374711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (considerDeclSpec) { 3757ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall if (handleObjCPointerTypeAttr(state, attr, declSpecType)) { 3767ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall // Splice the attribute into the decl spec. Prevents the 3777ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall // attribute from being applied multiple times and gives 3787ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall // the source-location-filler something to work with. 3797ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall state.saveDeclSpecAttrs(); 3807ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall moveAttrFromListToList(attr, declarator.getAttrListRef(), 3817ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall declarator.getMutableDeclSpec().getAttributes().getListRef()); 382711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 3837ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall } 384711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 385711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 386711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Otherwise, if we found an appropriate chunk, splice the attribute 387711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // into it. 388711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (innermost != -1U) { 389711c52bb20d0c69063b52a99826fb7d2835501f1John McCall moveAttrFromListToList(attr, declarator.getAttrListRef(), 390711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.getTypeObject(innermost).getAttrListRef()); 391711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 392711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 393711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 394711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Otherwise, diagnose when we're done building the type. 395711c52bb20d0c69063b52a99826fb7d2835501f1John McCall spliceAttrOutOfList(attr, declarator.getAttrListRef()); 396711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.addIgnoredTypeAttr(attr); 397711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 398711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 399711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// A function type attribute was written somewhere in a declaration 400711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// *other* than on the declarator itself or in the decl spec. Given 401711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// that it didn't apply in whatever position it was written in, try 402711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// to move it to a more appropriate position. 403711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void distributeFunctionTypeAttr(TypeProcessingState &state, 404711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 405711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType type) { 406711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 407711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 408711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Try to push the attribute from the return type of a function to 409711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // the function itself. 410711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = state.getCurrentChunkIndex(); i != 0; --i) { 411711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &chunk = declarator.getTypeObject(i-1); 412711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (chunk.Kind) { 413711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Function: 414711c52bb20d0c69063b52a99826fb7d2835501f1John McCall moveAttrFromListToList(attr, state.getCurrentAttrListRef(), 415711c52bb20d0c69063b52a99826fb7d2835501f1John McCall chunk.getAttrListRef()); 416711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 417711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 418711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Paren: 419711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Pointer: 420711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::BlockPointer: 421711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Array: 422711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Reference: 423711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::MemberPointer: 424711c52bb20d0c69063b52a99826fb7d2835501f1John McCall continue; 425711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 426711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 42791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4282792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall diagnoseBadTypeAttribute(state.getSema(), attr, type); 429711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 430711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 431711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Try to distribute a function type attribute to the innermost 432711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// function chunk or type. Returns true if the attribute was 433711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// distributed, false if no location was found. 434711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool 435711c52bb20d0c69063b52a99826fb7d2835501f1John McCalldistributeFunctionTypeAttrToInnermost(TypeProcessingState &state, 436711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 437711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *&attrList, 438711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 439711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 440711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 441711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Put it on the innermost function chunk, if there is one. 442711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = 0, e = declarator.getNumTypeObjects(); i != e; ++i) { 443711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &chunk = declarator.getTypeObject(i); 444711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (chunk.Kind != DeclaratorChunk::Function) continue; 445711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 446711c52bb20d0c69063b52a99826fb7d2835501f1John McCall moveAttrFromListToList(attr, attrList, chunk.getAttrListRef()); 447711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 448711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 449711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 450f85e193739c953358c865005855253af4f68a497John McCall if (handleFunctionTypeAttr(state, attr, declSpecType)) { 451f85e193739c953358c865005855253af4f68a497John McCall spliceAttrOutOfList(attr, attrList); 452f85e193739c953358c865005855253af4f68a497John McCall return true; 453f85e193739c953358c865005855253af4f68a497John McCall } 454f85e193739c953358c865005855253af4f68a497John McCall 455f85e193739c953358c865005855253af4f68a497John McCall return false; 456711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 457711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 458711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// A function type attribute was written in the decl spec. Try to 459711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// apply it somewhere. 460711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void 461711c52bb20d0c69063b52a99826fb7d2835501f1John McCalldistributeFunctionTypeAttrFromDeclSpec(TypeProcessingState &state, 462711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 463711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 464711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.saveDeclSpecAttrs(); 465711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 4665c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // C++11 attributes before the decl specifiers actually appertain to 4675c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // the declarators. Move them straight there. We don't support the 4685c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // 'put them wherever you like' semantics we allow for GNU attributes. 4695c52166525f8714c3e3a979b156ec23426947fd3Richard Smith if (attr.isCXX11Attribute()) { 4705c52166525f8714c3e3a979b156ec23426947fd3Richard Smith moveAttrFromListToList(attr, state.getCurrentAttrListRef(), 4715c52166525f8714c3e3a979b156ec23426947fd3Richard Smith state.getDeclarator().getAttrListRef()); 4725c52166525f8714c3e3a979b156ec23426947fd3Richard Smith return; 4735c52166525f8714c3e3a979b156ec23426947fd3Richard Smith } 4745c52166525f8714c3e3a979b156ec23426947fd3Richard Smith 475711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Try to distribute to the innermost. 476711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (distributeFunctionTypeAttrToInnermost(state, attr, 477711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.getCurrentAttrListRef(), 478711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declSpecType)) 479711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 480711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 481711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // If that failed, diagnose the bad attribute when the declarator is 482711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // fully built. 483711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.addIgnoredTypeAttr(attr); 484711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 485711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 486711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// A function type attribute was written on the declarator. Try to 487711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// apply it somewhere. 488711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void 489711c52bb20d0c69063b52a99826fb7d2835501f1John McCalldistributeFunctionTypeAttrFromDeclarator(TypeProcessingState &state, 490711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 491711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 492711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 493711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 494711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Try to distribute to the innermost. 495711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (distributeFunctionTypeAttrToInnermost(state, attr, 496711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.getAttrListRef(), 497711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declSpecType)) 498711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 499711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 500711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // If that failed, diagnose the bad attribute when the declarator is 501711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // fully built. 502711c52bb20d0c69063b52a99826fb7d2835501f1John McCall spliceAttrOutOfList(attr, declarator.getAttrListRef()); 503711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.addIgnoredTypeAttr(attr); 504711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 505711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 506711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// \brief Given that there are attributes written on the declarator 507711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// itself, try to distribute any type attributes to the appropriate 508711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// declarator chunk. 509711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// 510711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// These are attributes like the following: 511711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// int f ATTR; 512711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// int (f ATTR)(); 513711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// but not necessarily this: 514711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// int f() ATTR; 515711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void distributeTypeAttrsFromDeclarator(TypeProcessingState &state, 516711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 517711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Collect all the type attributes from the declarator itself. 518711c52bb20d0c69063b52a99826fb7d2835501f1John McCall assert(state.getDeclarator().getAttributes() && "declarator has no attrs!"); 519711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *attr = state.getDeclarator().getAttributes(); 520711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *next; 521711c52bb20d0c69063b52a99826fb7d2835501f1John McCall do { 522711c52bb20d0c69063b52a99826fb7d2835501f1John McCall next = attr->getNext(); 523711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 5245c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // Do not distribute C++11 attributes. They have strict rules for what 5255c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // they appertain to. 5265c52166525f8714c3e3a979b156ec23426947fd3Richard Smith if (attr->isCXX11Attribute()) 5275c52166525f8714c3e3a979b156ec23426947fd3Richard Smith continue; 5285c52166525f8714c3e3a979b156ec23426947fd3Richard Smith 529711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (attr->getKind()) { 530711c52bb20d0c69063b52a99826fb7d2835501f1John McCall OBJC_POINTER_TYPE_ATTRS_CASELIST: 531711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeObjCPointerTypeAttrFromDeclarator(state, *attr, declSpecType); 532711c52bb20d0c69063b52a99826fb7d2835501f1John McCall break; 533711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 5348e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_NSReturnsRetained: 5354e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!state.getSema().getLangOpts().ObjCAutoRefCount) 536f85e193739c953358c865005855253af4f68a497John McCall break; 537f85e193739c953358c865005855253af4f68a497John McCall // fallthrough 538f85e193739c953358c865005855253af4f68a497John McCall 539711c52bb20d0c69063b52a99826fb7d2835501f1John McCall FUNCTION_TYPE_ATTRS_CASELIST: 540711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeFunctionTypeAttrFromDeclarator(state, *attr, declSpecType); 541711c52bb20d0c69063b52a99826fb7d2835501f1John McCall break; 542711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 543711c52bb20d0c69063b52a99826fb7d2835501f1John McCall default: 544711c52bb20d0c69063b52a99826fb7d2835501f1John McCall break; 545711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 546711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } while ((attr = next)); 547711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 548711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 549711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Add a synthetic '()' to a block-literal declarator if it is 550711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// required, given the return type. 551711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void maybeSynthesizeBlockSignature(TypeProcessingState &state, 552711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType declSpecType) { 553711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 554711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 555711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // First, check whether the declarator would produce a function, 556711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // i.e. whether the innermost semantic chunk is a function. 557711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (declarator.isFunctionDeclarator()) { 558711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // If so, make that declarator a prototyped declarator. 559711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.getFunctionTypeInfo().hasPrototype = true; 560711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 561711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 562711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 563da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // If there are any type objects, the type as written won't name a 564da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // function, regardless of the decl spec type. This is because a 565da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // block signature declarator is always an abstract-declarator, and 566da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // abstract-declarators can't just be parentheses chunks. Therefore 567da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // we need to build a function chunk unless there are no type 568da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // objects and the decl spec type is a function. 569711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!declarator.getNumTypeObjects() && declSpecType->isFunctionType()) 570711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 571711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 572da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // Note that there *are* cases with invalid declarators where 573da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // declarators consist solely of parentheses. In general, these 574da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // occur only in failed efforts to make function declarators, so 575da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // faking up the function chunk is still the right thing to do. 576711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 577711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Otherwise, we need to fake up a function declarator. 57896a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceLocation loc = declarator.getLocStart(); 579711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 580711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // ...and *prepend* it to the declarator. 58159c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara SourceLocation NoLoc; 582711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.AddInnermostTypeInfo(DeclaratorChunk::getFunction( 58359c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*HasProto=*/true, 58459c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*IsAmbiguous=*/false, 58559c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*LParenLoc=*/NoLoc, 58659c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*ArgInfo=*/0, 58759c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*NumArgs=*/0, 58859c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*EllipsisLoc=*/NoLoc, 58959c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*RParenLoc=*/NoLoc, 59059c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*TypeQuals=*/0, 59159c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*RefQualifierIsLvalueRef=*/true, 59259c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*RefQualifierLoc=*/NoLoc, 59359c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*ConstQualifierLoc=*/NoLoc, 59459c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*VolatileQualifierLoc=*/NoLoc, 59559c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*MutableLoc=*/NoLoc, 59659c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara EST_None, 59759c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*ESpecLoc=*/NoLoc, 59859c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*Exceptions=*/0, 59959c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*ExceptionRanges=*/0, 60059c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*NumExceptions=*/0, 60159c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*NoexceptExpr=*/0, 60259c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara loc, loc, declarator)); 603711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 604711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // For consistency, make sure the state still has us as processing 605711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // the decl spec. 606711c52bb20d0c69063b52a99826fb7d2835501f1John McCall assert(state.getCurrentChunkIndex() == declarator.getNumTypeObjects() - 1); 607711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.setCurrentChunkIndex(declarator.getNumTypeObjects()); 60804a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall} 60904a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 610930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor/// \brief Convert the specified declspec to the appropriate type 611930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor/// object. 6121dfbd92c83699820bfaa352e83083124e34fc9dcJames Dennett/// \param state Specifies the declarator containing the declaration specifier 6131dfbd92c83699820bfaa352e83083124e34fc9dcJames Dennett/// to be converted, along with other associated processing state. 6145153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner/// \returns The type described by the declaration specifiers. This function 6155153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner/// never returns null. 6168cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidisstatic QualType ConvertDeclSpecToType(TypeProcessingState &state) { 6175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FIXME: Should move the logic from DeclSpec::Finish to here for validity 6185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // checking. 619711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 6208cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Sema &S = state.getSema(); 621711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 622711c52bb20d0c69063b52a99826fb7d2835501f1John McCall const DeclSpec &DS = declarator.getDeclSpec(); 623711c52bb20d0c69063b52a99826fb7d2835501f1John McCall SourceLocation DeclLoc = declarator.getIdentifierLoc(); 6245db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner if (DeclLoc.isInvalid()) 62596a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar DeclLoc = DS.getLocStart(); 62691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 627711c52bb20d0c69063b52a99826fb7d2835501f1John McCall ASTContext &Context = S.Context; 6281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 6295db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner QualType Result; 6305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DS.getTypeSpecType()) { 63196b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner case DeclSpec::TST_void: 63296b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner Result = Context.VoidTy; 63396b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner break; 6345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_char: 6355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.getTypeSpecSign() == DeclSpec::TSS_unspecified) 636fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.CharTy; 6375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else if (DS.getTypeSpecSign() == DeclSpec::TSS_signed) 638fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.SignedCharTy; 6395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else { 6405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(DS.getTypeSpecSign() == DeclSpec::TSS_unsigned && 6415f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Unknown TSS value"); 642fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.UnsignedCharTy; 6435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 644958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 64564c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis case DeclSpec::TST_wchar: 64664c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis if (DS.getTypeSpecSign() == DeclSpec::TSS_unspecified) 64764c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis Result = Context.WCharTy; 64864c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis else if (DS.getTypeSpecSign() == DeclSpec::TSS_signed) { 649711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecSignLoc(), diag::ext_invalid_sign_spec) 650f3a41af4d5c98a72a1d6720bbbfd658e57ef2541Chris Lattner << DS.getSpecifierName(DS.getTypeSpecType()); 65164c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis Result = Context.getSignedWCharType(); 65264c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis } else { 65364c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis assert(DS.getTypeSpecSign() == DeclSpec::TSS_unsigned && 65464c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis "Unknown TSS value"); 655711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecSignLoc(), diag::ext_invalid_sign_spec) 656f3a41af4d5c98a72a1d6720bbbfd658e57ef2541Chris Lattner << DS.getSpecifierName(DS.getTypeSpecType()); 65764c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis Result = Context.getUnsignedWCharType(); 65864c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis } 65964c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis break; 660f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith case DeclSpec::TST_char16: 661f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith assert(DS.getTypeSpecSign() == DeclSpec::TSS_unspecified && 662f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith "Unknown TSS value"); 663f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith Result = Context.Char16Ty; 664f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith break; 665f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith case DeclSpec::TST_char32: 666f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith assert(DS.getTypeSpecSign() == DeclSpec::TSS_unspecified && 667f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith "Unknown TSS value"); 668f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith Result = Context.Char32Ty; 669f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith break; 670d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner case DeclSpec::TST_unspecified: 67162f5f7ffad57e0c2af2b308af3735351505937cbChris Lattner // "<proto1,proto2>" is an objc qualified ID with a missing id. 672097e916b617bb4a069a03764024c310ed42a6424Chris Lattner if (DeclSpec::ProtocolQualifierListTy PQ = DS.getProtocolQualifiers()) { 673c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = Context.getObjCObjectType(Context.ObjCBuiltinIdTy, 67431ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky (ObjCProtocolDecl*const*)PQ, 675c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall DS.getNumProtocolQualifiers()); 676c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = Context.getObjCObjectPointerType(Result); 67762f5f7ffad57e0c2af2b308af3735351505937cbChris Lattner break; 67862f5f7ffad57e0c2af2b308af3735351505937cbChris Lattner } 67991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 6805db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner // If this is a missing declspec in a block literal return context, then it 6815db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner // is inferred from the return statements inside the block. 682f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman // The declspec is always missing in a lambda expr context; it is either 683f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman // specified with a trailing return type or inferred. 684f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman if (declarator.getContext() == Declarator::LambdaExprContext || 685f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman isOmittedBlockReturnType(declarator)) { 6865db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner Result = Context.DependentTy; 6875db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner break; 6885db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner } 6891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 690d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // Unspecified typespec defaults to int in C90. However, the C90 grammar 691d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // [C90 6.5] only allows a decl-spec if there was *some* type-specifier, 692d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // type-qualifier, or storage-class-specifier. If not, emit an extwarn. 693d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // Note that the one exception to this is function definitions, which are 694d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // allowed to be completely missing a declspec. This is handled in the 695d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // parser already though by it pretending to have seen an 'int' in this 696d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // case. 6974e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().ImplicitInt) { 69835d276f443462249b436951c1c663820569e1768Chris Lattner // In C89 mode, we only warn if there is a completely missing declspec 69935d276f443462249b436951c1c663820569e1768Chris Lattner // when one is not allowed. 7003f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner if (DS.isEmpty()) { 701711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DeclLoc, diag::ext_missing_declspec) 7023f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner << DS.getSourceRange() 70396a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar << FixItHint::CreateInsertion(DS.getLocStart(), "int"); 7043f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner } 7054310f4ee260e6c7ceeaf299e240f4d789ecc730dDouglas Gregor } else if (!DS.hasTypeSpecifier()) { 706d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // C99 and C++ require a type specifier. For example, C99 6.7.2p2 says: 707d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // "At least one type specifier shall be given in the declaration 708d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // specifiers in each declaration, and in the specifier-qualifier list in 709d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // each struct declaration and type name." 7104310f4ee260e6c7ceeaf299e240f4d789ecc730dDouglas Gregor // FIXME: Does Microsoft really have the implicit int extension in C++? 7114e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().CPlusPlus && 7124e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie !S.getLangOpts().MicrosoftExt) { 713711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DeclLoc, diag::err_missing_type_specifier) 7143f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner << DS.getSourceRange(); 7151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 716b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner // When this occurs in C++ code, often something is very broken with the 717b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner // value being declared, poison it as invalid so we don't get chains of 718b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner // errors. 719711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 720b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner } else { 721711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DeclLoc, diag::ext_missing_type_specifier) 7223f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner << DS.getSourceRange(); 723b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner } 724d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner } 7251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // FALL THROUGH. 7273cbc38bd3569d37f53bd76fa89d24803f48f5036Chris Lattner case DeclSpec::TST_int: { 7285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.getTypeSpecSign() != DeclSpec::TSS_unsigned) { 7295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DS.getTypeSpecWidth()) { 730fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_unspecified: Result = Context.IntTy; break; 731fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_short: Result = Context.ShortTy; break; 732fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_long: Result = Context.LongTy; break; 733311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner case DeclSpec::TSW_longlong: 734311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner Result = Context.LongLongTy; 73591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 736e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko // 'long long' is a C99 or C++11 feature. 737e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko if (!S.getLangOpts().C99) { 738e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko if (S.getLangOpts().CPlusPlus) 739e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko S.Diag(DS.getTypeSpecWidthLoc(), 74080ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith S.getLangOpts().CPlusPlus11 ? 741e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko diag::warn_cxx98_compat_longlong : diag::ext_cxx11_longlong); 742e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko else 743e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko S.Diag(DS.getTypeSpecWidthLoc(), diag::ext_c99_longlong); 744e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko } 745311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner break; 7465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 7485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DS.getTypeSpecWidth()) { 749fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_unspecified: Result = Context.UnsignedIntTy; break; 750fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_short: Result = Context.UnsignedShortTy; break; 751fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_long: Result = Context.UnsignedLongTy; break; 752311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner case DeclSpec::TSW_longlong: 753311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner Result = Context.UnsignedLongLongTy; 75491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 755e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko // 'long long' is a C99 or C++11 feature. 756e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko if (!S.getLangOpts().C99) { 757e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko if (S.getLangOpts().CPlusPlus) 758e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko S.Diag(DS.getTypeSpecWidthLoc(), 75980ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith S.getLangOpts().CPlusPlus11 ? 760e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko diag::warn_cxx98_compat_longlong : diag::ext_cxx11_longlong); 761e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko else 762e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko S.Diag(DS.getTypeSpecWidthLoc(), diag::ext_c99_longlong); 763e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko } 764311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner break; 7655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 7665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 767958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 7683cbc38bd3569d37f53bd76fa89d24803f48f5036Chris Lattner } 7695a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith case DeclSpec::TST_int128: 77084268904947ada7e251932a6f5b0f4364df7a2c7Richard Smith if (!S.PP.getTargetInfo().hasInt128Type()) 77184268904947ada7e251932a6f5b0f4364df7a2c7Richard Smith S.Diag(DS.getTypeSpecTypeLoc(), diag::err_int128_unsupported); 7725a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith if (DS.getTypeSpecSign() == DeclSpec::TSS_unsigned) 7735a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith Result = Context.UnsignedInt128Ty; 7745a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith else 7755a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith Result = Context.Int128Ty; 7765a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith break; 777aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov case DeclSpec::TST_half: Result = Context.HalfTy; break; 778fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TST_float: Result = Context.FloatTy; break; 779958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner case DeclSpec::TST_double: 780958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner if (DS.getTypeSpecWidth() == DeclSpec::TSW_long) 781fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.LongDoubleTy; 782958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner else 783fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.DoubleTy; 78439d3e7a26c1969fcb76bceb4ee0a410c60ea5954Peter Collingbourne 7854e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().OpenCL && !S.getOpenCLOptions().cl_khr_fp64) { 78639d3e7a26c1969fcb76bceb4ee0a410c60ea5954Peter Collingbourne S.Diag(DS.getTypeSpecTypeLoc(), diag::err_double_requires_fp64); 78739d3e7a26c1969fcb76bceb4ee0a410c60ea5954Peter Collingbourne declarator.setInvalidType(true); 78839d3e7a26c1969fcb76bceb4ee0a410c60ea5954Peter Collingbourne } 789958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 790fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TST_bool: Result = Context.BoolTy; break; // _Bool or bool 7915f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_decimal32: // _Decimal32 7925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_decimal64: // _Decimal64 7935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_decimal128: // _Decimal128 794711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecTypeLoc(), diag::err_decimal_unsupported); 7958f12f65fad7bfbbdbd4234efe0d484f68c3924b6Chris Lattner Result = Context.IntTy; 796711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 7978f12f65fad7bfbbdbd4234efe0d484f68c3924b6Chris Lattner break; 79899dc91422144483c20d1c7381bc9ac634b646b04Chris Lattner case DeclSpec::TST_class: 7995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_enum: 8005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_union: 8016666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos case DeclSpec::TST_struct: 8026666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos case DeclSpec::TST_interface: { 803b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall TypeDecl *D = dyn_cast_or_null<TypeDecl>(DS.getRepAsDecl()); 8046e24726524c2b51b31bb4b622aa678a46b024f42John McCall if (!D) { 8056e24726524c2b51b31bb4b622aa678a46b024f42John McCall // This can happen in C++ with ambiguous lookups. 8066e24726524c2b51b31bb4b622aa678a46b024f42John McCall Result = Context.IntTy; 807711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 8086e24726524c2b51b31bb4b622aa678a46b024f42John McCall break; 8096e24726524c2b51b31bb4b622aa678a46b024f42John McCall } 8106e24726524c2b51b31bb4b622aa678a46b024f42John McCall 811a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner // If the type is deprecated or unavailable, diagnose it. 8120daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara S.DiagnoseUseOfDecl(D, DS.getTypeSpecTypeNameLoc()); 81391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 8145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(DS.getTypeSpecWidth() == 0 && DS.getTypeSpecComplex() == 0 && 815a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner DS.getTypeSpecSign() == 0 && "No qualifiers on tag names!"); 81691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 8175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TypeQuals handled by caller. 818a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner Result = Context.getTypeDeclType(D); 8192191b20bfb31fc0e22a158f6b4204cd0b7dbd0fdJohn McCall 8200daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara // In both C and C++, make an ElaboratedType. 8210daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara ElaboratedTypeKeyword Keyword 8220daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara = ElaboratedType::getKeywordForTypeSpec(DS.getTypeSpecType()); 8230daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara Result = S.getElaboratedType(Keyword, DS.getTypeSpecScope(), Result); 824958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 8251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 8261a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor case DeclSpec::TST_typename: { 8275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(DS.getTypeSpecWidth() == 0 && DS.getTypeSpecComplex() == 0 && 8285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.getTypeSpecSign() == 0 && 8295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Can't handle qualifiers on typedef names yet!"); 830711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Result = S.GetTypeFromParser(DS.getRepAsType()); 83127940d2fb346325d6001a7661e4ada099cd8e59cJohn McCall if (Result.isNull()) 832711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 83327940d2fb346325d6001a7661e4ada099cd8e59cJohn McCall else if (DeclSpec::ProtocolQualifierListTy PQ 83427940d2fb346325d6001a7661e4ada099cd8e59cJohn McCall = DS.getProtocolQualifiers()) { 835c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall if (const ObjCObjectType *ObjT = Result->getAs<ObjCObjectType>()) { 836c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall // Silently drop any existing protocol qualifiers. 837c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall // TODO: determine whether that's the right thing to do. 838c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall if (ObjT->getNumProtocols()) 839c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = ObjT->getBaseType(); 840c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall 841c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall if (DS.getNumProtocolQualifiers()) 842c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = Context.getObjCObjectType(Result, 84331ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky (ObjCProtocolDecl*const*) PQ, 844c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall DS.getNumProtocolQualifiers()); 845c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else if (Result->isObjCIdType()) { 846ae4da6150bb837311a2f0f958b01a2989066ba90Chris Lattner // id<protocol-list> 847c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = Context.getObjCObjectType(Context.ObjCBuiltinIdTy, 84831ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky (ObjCProtocolDecl*const*) PQ, 849c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall DS.getNumProtocolQualifiers()); 850c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = Context.getObjCObjectPointerType(Result); 851c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else if (Result->isObjCClassType()) { 8524262a07621043c19292f5fd90b1e426d65cd366cSteve Naroff // Class<protocol-list> 853c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = Context.getObjCObjectType(Context.ObjCBuiltinClassTy, 85431ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky (ObjCProtocolDecl*const*) PQ, 855c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall DS.getNumProtocolQualifiers()); 856c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = Context.getObjCObjectPointerType(Result); 8573f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner } else { 858711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DeclLoc, diag::err_invalid_protocol_qualifiers) 8593f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner << DS.getSourceRange(); 860711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 8613f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner } 862c569249ca0ab755ac79d8cbbfcb2bcae19743624Fariborz Jahanian } 8631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8645f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TypeQuals handled by caller. 865958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 8665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 867958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner case DeclSpec::TST_typeofType: 868e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis // FIXME: Preserve type source info. 869711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Result = S.GetTypeFromParser(DS.getRepAsType()); 870958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner assert(!Result.isNull() && "Didn't get a type for typeof?"); 871730e175910936eae49e65caea8b2ba81c67edff7Fariborz Jahanian if (!Result->isDependentType()) 872730e175910936eae49e65caea8b2ba81c67edff7Fariborz Jahanian if (const TagType *TT = Result->getAs<TagType>()) 873711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.DiagnoseUseOfDecl(TT->getDecl(), DS.getTypeSpecTypeLoc()); 874d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff // TypeQuals handled by caller. 875fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.getTypeOfType(Result); 876958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 877d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff case DeclSpec::TST_typeofExpr: { 878b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Expr *E = DS.getRepAsExpr(); 879d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff assert(E && "Didn't get an expression for typeof?"); 880d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff // TypeQuals handled by caller. 881711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Result = S.BuildTypeofExprType(E, DS.getTypeSpecTypeLoc()); 8824b52e25f3b05ab0f9d2492276a52323a50a84fb7Douglas Gregor if (Result.isNull()) { 8834b52e25f3b05ab0f9d2492276a52323a50a84fb7Douglas Gregor Result = Context.IntTy; 884711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 8854b52e25f3b05ab0f9d2492276a52323a50a84fb7Douglas Gregor } 886958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 887d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff } 8886fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson case DeclSpec::TST_decltype: { 889b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Expr *E = DS.getRepAsExpr(); 8906fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson assert(E && "Didn't get an expression for decltype?"); 8916fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson // TypeQuals handled by caller. 892711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Result = S.BuildDecltypeType(E, DS.getTypeSpecTypeLoc()); 893af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson if (Result.isNull()) { 894af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson Result = Context.IntTy; 895711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 896af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson } 8976fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson break; 8986fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson } 899ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt case DeclSpec::TST_underlyingType: 900db5d44b775c60166074acd184ca9f1981c10c2a7Sean Hunt Result = S.GetTypeFromParser(DS.getRepAsType()); 901db5d44b775c60166074acd184ca9f1981c10c2a7Sean Hunt assert(!Result.isNull() && "Didn't get a type for __underlying_type?"); 902ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Result = S.BuildUnaryTransformType(Result, 903ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt UnaryTransformType::EnumUnderlyingType, 904ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt DS.getTypeSpecTypeLoc()); 905ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt if (Result.isNull()) { 906ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Result = Context.IntTy; 907ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt declarator.setInvalidType(true); 908db5d44b775c60166074acd184ca9f1981c10c2a7Sean Hunt } 90991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier break; 910db5d44b775c60166074acd184ca9f1981c10c2a7Sean Hunt 911e89d15944dd3be750a09805ad21222d2fa9321faAnders Carlsson case DeclSpec::TST_auto: { 912e89d15944dd3be750a09805ad21222d2fa9321faAnders Carlsson // TypeQuals handled by caller. 91334b41d939a1328f484511c6002ba2456db879a29Richard Smith Result = Context.getAutoType(QualType()); 914e89d15944dd3be750a09805ad21222d2fa9321faAnders Carlsson break; 915e89d15944dd3be750a09805ad21222d2fa9321faAnders Carlsson } 9161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 917a5fc472b353b88be3b4981da946fb01f5a5cc0c6John McCall case DeclSpec::TST_unknown_anytype: 918a5fc472b353b88be3b4981da946fb01f5a5cc0c6John McCall Result = Context.UnknownAnyTy; 919a5fc472b353b88be3b4981da946fb01f5a5cc0c6John McCall break; 920a5fc472b353b88be3b4981da946fb01f5a5cc0c6John McCall 921b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman case DeclSpec::TST_atomic: 922b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman Result = S.GetTypeFromParser(DS.getRepAsType()); 923b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman assert(!Result.isNull() && "Didn't get a type for _Atomic?"); 924b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman Result = S.BuildAtomicType(Result, DS.getTypeSpecTypeLoc()); 925b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman if (Result.isNull()) { 926b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman Result = Context.IntTy; 927b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman declarator.setInvalidType(true); 928b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman } 92991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier break; 930b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei 931b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei case DeclSpec::TST_image1d_t: 932b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei Result = Context.OCLImage1dTy; 933b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei break; 934b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei 935b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei case DeclSpec::TST_image1d_array_t: 936b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei Result = Context.OCLImage1dArrayTy; 937b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei break; 938b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei 939b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei case DeclSpec::TST_image1d_buffer_t: 940b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei Result = Context.OCLImage1dBufferTy; 941b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei break; 942b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei 943b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei case DeclSpec::TST_image2d_t: 944b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei Result = Context.OCLImage2dTy; 945b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei break; 946b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei 947b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei case DeclSpec::TST_image2d_array_t: 948b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei Result = Context.OCLImage2dArrayTy; 949b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei break; 950b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei 951b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei case DeclSpec::TST_image3d_t: 952b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei Result = Context.OCLImage3dTy; 953b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei break; 954b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman 955809070a886684cb5b92eb0e00a6581ab1fa6b17aDouglas Gregor case DeclSpec::TST_error: 9565153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner Result = Context.IntTy; 957711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 9585153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner break; 9595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 9601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 961958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner // Handle complex types. 962f244cd7e54753caf6edb76df430dea2f43bb82a8Douglas Gregor if (DS.getTypeSpecComplex() == DeclSpec::TSC_complex) { 9634e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().Freestanding) 964711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecComplexLoc(), diag::ext_freestanding_complex); 965fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.getComplexType(Result); 96682287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson } else if (DS.isTypeAltiVecVector()) { 96782287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson unsigned typeSize = static_cast<unsigned>(Context.getTypeSize(Result)); 96882287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson assert(typeSize > 0 && "type size for vector must be greater than 0 bits"); 969e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson VectorType::VectorKind VecKind = VectorType::AltiVecVector; 970788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner if (DS.isTypeAltiVecPixel()) 971e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson VecKind = VectorType::AltiVecPixel; 972788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner else if (DS.isTypeAltiVecBool()) 973e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson VecKind = VectorType::AltiVecBool; 974e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson Result = Context.getVectorType(Result, 128/typeSize, VecKind); 975f244cd7e54753caf6edb76df430dea2f43bb82a8Douglas Gregor } 9761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 97747423bdaa06a3b9c2a859b57c17fc570094dad1cArgyrios Kyrtzidis // FIXME: Imaginary. 97847423bdaa06a3b9c2a859b57c17fc570094dad1cArgyrios Kyrtzidis if (DS.getTypeSpecComplex() == DeclSpec::TSC_imaginary) 979711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecComplexLoc(), diag::err_imaginary_not_supported); 9801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 981711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Before we process any type attributes, synthesize a block literal 982711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // function declarator if necessary. 983711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (declarator.getContext() == Declarator::BlockLiteralContext) 984711c52bb20d0c69063b52a99826fb7d2835501f1John McCall maybeSynthesizeBlockSignature(state, Result); 985711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 986711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Apply any type attributes from the decl spec. This may cause the 987711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // list of type attributes to be temporarily saved while the type 988711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // attributes are pushed around. 989711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (AttributeList *attrs = DS.getAttributes().getList()) 990f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith processTypeAttrs(state, Result, TAL_DeclSpec, attrs); 9911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 99296b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // Apply const/volatile/restrict qualifiers to T. 99396b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner if (unsigned TypeQuals = DS.getTypeQualifiers()) { 99496b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner 99596b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // Enforce C99 6.7.3p2: "Types other than pointer types derived from object 99696b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // or incomplete types shall not be restrict-qualified." C++ also allows 99796b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // restrict-qualified references. 9980953e767ff7817f97b3ab20896b229891eeff45bJohn McCall if (TypeQuals & DeclSpec::TQ_restrict) { 9992b5ff1a1471819192ae805b51b888030ecb52914Fariborz Jahanian if (Result->isAnyPointerType() || Result->isReferenceType()) { 10002b5ff1a1471819192ae805b51b888030ecb52914Fariborz Jahanian QualType EltTy; 10012b5ff1a1471819192ae805b51b888030ecb52914Fariborz Jahanian if (Result->isObjCObjectPointerType()) 10022b5ff1a1471819192ae805b51b888030ecb52914Fariborz Jahanian EltTy = Result; 10032b5ff1a1471819192ae805b51b888030ecb52914Fariborz Jahanian else 10042b5ff1a1471819192ae805b51b888030ecb52914Fariborz Jahanian EltTy = Result->isPointerType() ? 10052b5ff1a1471819192ae805b51b888030ecb52914Fariborz Jahanian Result->getAs<PointerType>()->getPointeeType() : 10062b5ff1a1471819192ae805b51b888030ecb52914Fariborz Jahanian Result->getAs<ReferenceType>()->getPointeeType(); 10071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1008bad0e656c3732e3539a9cd6525de721d7e47408bDouglas Gregor // If we have a pointer or reference, the pointee must have an object 1009bdcd637c29ec1540f912ea6860c88b910e78c329Chris Lattner // incomplete type. 1010bdcd637c29ec1540f912ea6860c88b910e78c329Chris Lattner if (!EltTy->isIncompleteOrObjectType()) { 1011711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getRestrictSpecLoc(), 1012d3a94e24ddf3fb90de76b17bd176d9ed61e66f2cChris Lattner diag::err_typecheck_invalid_restrict_invalid_pointee) 1013d162584991885ab004a02573a73ce06422b921fcChris Lattner << EltTy << DS.getSourceRange(); 10140953e767ff7817f97b3ab20896b229891eeff45bJohn McCall TypeQuals &= ~DeclSpec::TQ_restrict; // Remove the restrict qualifier. 1015bdcd637c29ec1540f912ea6860c88b910e78c329Chris Lattner } 1016bdcd637c29ec1540f912ea6860c88b910e78c329Chris Lattner } else { 1017711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getRestrictSpecLoc(), 1018711c52bb20d0c69063b52a99826fb7d2835501f1John McCall diag::err_typecheck_invalid_restrict_not_pointer) 1019d162584991885ab004a02573a73ce06422b921fcChris Lattner << Result << DS.getSourceRange(); 10200953e767ff7817f97b3ab20896b229891eeff45bJohn McCall TypeQuals &= ~DeclSpec::TQ_restrict; // Remove the restrict qualifier. 102196b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 102296b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 10231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 102496b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // Warn about CV qualifiers on functions: C99 6.7.3p8: "If the specification 102596b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // of a function type includes any type qualifiers, the behavior is 102696b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // undefined." 102796b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner if (Result->isFunctionType() && TypeQuals) { 102896b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // Get some location to point at, either the C or V location. 102996b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner SourceLocation Loc; 10300953e767ff7817f97b3ab20896b229891eeff45bJohn McCall if (TypeQuals & DeclSpec::TQ_const) 103196b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner Loc = DS.getConstSpecLoc(); 10320953e767ff7817f97b3ab20896b229891eeff45bJohn McCall else if (TypeQuals & DeclSpec::TQ_volatile) 103396b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner Loc = DS.getVolatileSpecLoc(); 10340953e767ff7817f97b3ab20896b229891eeff45bJohn McCall else { 10350953e767ff7817f97b3ab20896b229891eeff45bJohn McCall assert((TypeQuals & DeclSpec::TQ_restrict) && 10360953e767ff7817f97b3ab20896b229891eeff45bJohn McCall "Has CVR quals but not C, V, or R?"); 10370953e767ff7817f97b3ab20896b229891eeff45bJohn McCall Loc = DS.getRestrictSpecLoc(); 103896b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 1039711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(Loc, diag::warn_typecheck_function_qualifiers) 1040d162584991885ab004a02573a73ce06422b921fcChris Lattner << Result << DS.getSourceRange(); 104196b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 10421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1043f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // C++ [dcl.ref]p1: 1044f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // Cv-qualified references are ill-formed except when the 1045f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // cv-qualifiers are introduced through the use of a typedef 1046f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // (7.1.3) or of a template type argument (14.3), in which 1047f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // case the cv-qualifiers are ignored. 10481a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor // FIXME: Shouldn't we be checking SCS_typedef here? 10491a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor if (DS.getTypeSpecType() == DeclSpec::TST_typename && 1050f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor TypeQuals && Result->isReferenceType()) { 10510953e767ff7817f97b3ab20896b229891eeff45bJohn McCall TypeQuals &= ~DeclSpec::TQ_const; 10520953e767ff7817f97b3ab20896b229891eeff45bJohn McCall TypeQuals &= ~DeclSpec::TQ_volatile; 10531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 10541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1055bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman // C90 6.5.3 constraints: "The same type qualifier shall not appear more 1056bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman // than once in the same specifier-list or qualifier-list, either directly 1057bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman // or via one or more typedefs." 105891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier if (!S.getLangOpts().C99 && !S.getLangOpts().CPlusPlus 1059bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman && TypeQuals & Result.getCVRQualifiers()) { 1060bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman if (TypeQuals & DeclSpec::TQ_const && Result.isConstQualified()) { 106191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier S.Diag(DS.getConstSpecLoc(), diag::ext_duplicate_declspec) 1062bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman << "const"; 1063bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman } 1064bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman 1065bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman if (TypeQuals & DeclSpec::TQ_volatile && Result.isVolatileQualified()) { 106691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier S.Diag(DS.getVolatileSpecLoc(), diag::ext_duplicate_declspec) 1067bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman << "volatile"; 1068bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman } 1069bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman 1070bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman // C90 doesn't have restrict, so it doesn't force us to produce a warning 1071bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman // in this case. 1072bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman } 1073bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman 10740953e767ff7817f97b3ab20896b229891eeff45bJohn McCall Qualifiers Quals = Qualifiers::fromCVRMask(TypeQuals); 10750953e767ff7817f97b3ab20896b229891eeff45bJohn McCall Result = Context.getQualifiedType(Result, Quals); 107696b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 10770953e767ff7817f97b3ab20896b229891eeff45bJohn McCall 1078f1d705c3e2276f7f5b97b8b3394b9b3068fdf25bChris Lattner return Result; 1079f1d705c3e2276f7f5b97b8b3394b9b3068fdf25bChris Lattner} 1080f1d705c3e2276f7f5b97b8b3394b9b3068fdf25bChris Lattner 1081cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregorstatic std::string getPrintableNameForEntity(DeclarationName Entity) { 1082cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (Entity) 1083cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return Entity.getAsString(); 10841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1085cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return "type name"; 1086cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 1087cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 10882865474261a608c7873b87ba4af110d17907896dJohn McCallQualType Sema::BuildQualifiedType(QualType T, SourceLocation Loc, 10892865474261a608c7873b87ba4af110d17907896dJohn McCall Qualifiers Qs) { 10902865474261a608c7873b87ba4af110d17907896dJohn McCall // Enforce C99 6.7.3p2: "Types other than pointer types derived from 10912865474261a608c7873b87ba4af110d17907896dJohn McCall // object or incomplete types shall not be restrict-qualified." 10922865474261a608c7873b87ba4af110d17907896dJohn McCall if (Qs.hasRestrict()) { 10932865474261a608c7873b87ba4af110d17907896dJohn McCall unsigned DiagID = 0; 10942865474261a608c7873b87ba4af110d17907896dJohn McCall QualType ProblemTy; 10952865474261a608c7873b87ba4af110d17907896dJohn McCall 10962865474261a608c7873b87ba4af110d17907896dJohn McCall const Type *Ty = T->getCanonicalTypeInternal().getTypePtr(); 10972865474261a608c7873b87ba4af110d17907896dJohn McCall if (const ReferenceType *RTy = dyn_cast<ReferenceType>(Ty)) { 10982865474261a608c7873b87ba4af110d17907896dJohn McCall if (!RTy->getPointeeType()->isIncompleteOrObjectType()) { 10992865474261a608c7873b87ba4af110d17907896dJohn McCall DiagID = diag::err_typecheck_invalid_restrict_invalid_pointee; 11002865474261a608c7873b87ba4af110d17907896dJohn McCall ProblemTy = T->getAs<ReferenceType>()->getPointeeType(); 11012865474261a608c7873b87ba4af110d17907896dJohn McCall } 11022865474261a608c7873b87ba4af110d17907896dJohn McCall } else if (const PointerType *PTy = dyn_cast<PointerType>(Ty)) { 11032865474261a608c7873b87ba4af110d17907896dJohn McCall if (!PTy->getPointeeType()->isIncompleteOrObjectType()) { 11042865474261a608c7873b87ba4af110d17907896dJohn McCall DiagID = diag::err_typecheck_invalid_restrict_invalid_pointee; 11052865474261a608c7873b87ba4af110d17907896dJohn McCall ProblemTy = T->getAs<PointerType>()->getPointeeType(); 11062865474261a608c7873b87ba4af110d17907896dJohn McCall } 11072865474261a608c7873b87ba4af110d17907896dJohn McCall } else if (const MemberPointerType *PTy = dyn_cast<MemberPointerType>(Ty)) { 11082865474261a608c7873b87ba4af110d17907896dJohn McCall if (!PTy->getPointeeType()->isIncompleteOrObjectType()) { 11092865474261a608c7873b87ba4af110d17907896dJohn McCall DiagID = diag::err_typecheck_invalid_restrict_invalid_pointee; 11102865474261a608c7873b87ba4af110d17907896dJohn McCall ProblemTy = T->getAs<PointerType>()->getPointeeType(); 111191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier } 11122865474261a608c7873b87ba4af110d17907896dJohn McCall } else if (!Ty->isDependentType()) { 11132865474261a608c7873b87ba4af110d17907896dJohn McCall // FIXME: this deserves a proper diagnostic 11142865474261a608c7873b87ba4af110d17907896dJohn McCall DiagID = diag::err_typecheck_invalid_restrict_invalid_pointee; 11152865474261a608c7873b87ba4af110d17907896dJohn McCall ProblemTy = T; 11162865474261a608c7873b87ba4af110d17907896dJohn McCall } 11172865474261a608c7873b87ba4af110d17907896dJohn McCall 11182865474261a608c7873b87ba4af110d17907896dJohn McCall if (DiagID) { 11192865474261a608c7873b87ba4af110d17907896dJohn McCall Diag(Loc, DiagID) << ProblemTy; 11202865474261a608c7873b87ba4af110d17907896dJohn McCall Qs.removeRestrict(); 11212865474261a608c7873b87ba4af110d17907896dJohn McCall } 11222865474261a608c7873b87ba4af110d17907896dJohn McCall } 11232865474261a608c7873b87ba4af110d17907896dJohn McCall 11242865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getQualifiedType(T, Qs); 11252865474261a608c7873b87ba4af110d17907896dJohn McCall} 11262865474261a608c7873b87ba4af110d17907896dJohn McCall 1127075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara/// \brief Build a paren type including \p T. 1128075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo BagnaraQualType Sema::BuildParenType(QualType T) { 1129075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara return Context.getParenType(T); 1130075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara} 1131075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara 1132f85e193739c953358c865005855253af4f68a497John McCall/// Given that we're building a pointer or reference to the given 1133f85e193739c953358c865005855253af4f68a497John McCallstatic QualType inferARCLifetimeForPointee(Sema &S, QualType type, 1134f85e193739c953358c865005855253af4f68a497John McCall SourceLocation loc, 1135f85e193739c953358c865005855253af4f68a497John McCall bool isReference) { 1136f85e193739c953358c865005855253af4f68a497John McCall // Bail out if retention is unrequired or already specified. 1137f85e193739c953358c865005855253af4f68a497John McCall if (!type->isObjCLifetimeType() || 1138f85e193739c953358c865005855253af4f68a497John McCall type.getObjCLifetime() != Qualifiers::OCL_None) 1139f85e193739c953358c865005855253af4f68a497John McCall return type; 1140f85e193739c953358c865005855253af4f68a497John McCall 1141f85e193739c953358c865005855253af4f68a497John McCall Qualifiers::ObjCLifetime implicitLifetime = Qualifiers::OCL_None; 1142f85e193739c953358c865005855253af4f68a497John McCall 1143f85e193739c953358c865005855253af4f68a497John McCall // If the object type is const-qualified, we can safely use 1144f85e193739c953358c865005855253af4f68a497John McCall // __unsafe_unretained. This is safe (because there are no read 1145f85e193739c953358c865005855253af4f68a497John McCall // barriers), and it'll be safe to coerce anything but __weak* to 1146f85e193739c953358c865005855253af4f68a497John McCall // the resulting type. 1147f85e193739c953358c865005855253af4f68a497John McCall if (type.isConstQualified()) { 1148f85e193739c953358c865005855253af4f68a497John McCall implicitLifetime = Qualifiers::OCL_ExplicitNone; 1149f85e193739c953358c865005855253af4f68a497John McCall 1150f85e193739c953358c865005855253af4f68a497John McCall // Otherwise, check whether the static type does not require 1151f85e193739c953358c865005855253af4f68a497John McCall // retaining. This currently only triggers for Class (possibly 1152f85e193739c953358c865005855253af4f68a497John McCall // protocol-qualifed, and arrays thereof). 1153f85e193739c953358c865005855253af4f68a497John McCall } else if (type->isObjCARCImplicitlyUnretainedType()) { 1154f85e193739c953358c865005855253af4f68a497John McCall implicitLifetime = Qualifiers::OCL_ExplicitNone; 11555b76f373d23cc3b292ecf523349aaaa388eea375Argyrios Kyrtzidis 1156ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman // If we are in an unevaluated context, like sizeof, skip adding a 1157ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman // qualification. 115871f55f771794674a410171dbf3cb5dbedf95d033David Blaikie } else if (S.isUnevaluatedContext()) { 1159ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman return type; 1160f85e193739c953358c865005855253af4f68a497John McCall 1161e8c904ff343f440e213b88e6963f5ebfbec7ae60John McCall // If that failed, give an error and recover using __strong. __strong 1162e8c904ff343f440e213b88e6963f5ebfbec7ae60John McCall // is the option most likely to prevent spurious second-order diagnostics, 1163e8c904ff343f440e213b88e6963f5ebfbec7ae60John McCall // like when binding a reference to a field. 1164f85e193739c953358c865005855253af4f68a497John McCall } else { 1165f85e193739c953358c865005855253af4f68a497John McCall // These types can show up in private ivars in system headers, so 1166f85e193739c953358c865005855253af4f68a497John McCall // we need this to not be an error in those cases. Instead we 1167f85e193739c953358c865005855253af4f68a497John McCall // want to delay. 1168f85e193739c953358c865005855253af4f68a497John McCall if (S.DelayedDiagnostics.shouldDelayDiagnostics()) { 1169ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman S.DelayedDiagnostics.add( 1170ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman sema::DelayedDiagnostic::makeForbiddenType(loc, 1171ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman diag::err_arc_indirect_no_ownership, type, isReference)); 1172f85e193739c953358c865005855253af4f68a497John McCall } else { 1173ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman S.Diag(loc, diag::err_arc_indirect_no_ownership) << type << isReference; 1174f85e193739c953358c865005855253af4f68a497John McCall } 1175e8c904ff343f440e213b88e6963f5ebfbec7ae60John McCall implicitLifetime = Qualifiers::OCL_Strong; 1176f85e193739c953358c865005855253af4f68a497John McCall } 1177f85e193739c953358c865005855253af4f68a497John McCall assert(implicitLifetime && "didn't infer any lifetime!"); 1178f85e193739c953358c865005855253af4f68a497John McCall 1179f85e193739c953358c865005855253af4f68a497John McCall Qualifiers qs; 1180f85e193739c953358c865005855253af4f68a497John McCall qs.addObjCLifetime(implicitLifetime); 1181f85e193739c953358c865005855253af4f68a497John McCall return S.Context.getQualifiedType(type, qs); 1182f85e193739c953358c865005855253af4f68a497John McCall} 1183f85e193739c953358c865005855253af4f68a497John McCall 1184cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \brief Build a pointer type. 1185cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1186cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param T The type to which we'll be building a pointer. 1187cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1188cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Loc The location of the entity whose type involves this 1189cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// pointer type or, if there is no such entity, the location of the 1190cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type that will have pointer type. 1191cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1192cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Entity The name of the entity that involves the pointer 1193cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type, if known. 1194cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1195cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \returns A suitable pointer type, if there are no 1196cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// errors. Otherwise, returns a NULL type. 11972865474261a608c7873b87ba4af110d17907896dJohn McCallQualType Sema::BuildPointerType(QualType T, 1198cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor SourceLocation Loc, DeclarationName Entity) { 1199cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T->isReferenceType()) { 1200cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C++ 8.3.2p4: There shall be no ... pointers to references ... 1201cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_illegal_decl_pointer_to_reference) 1202ac406052f7b980f8caa6b07b4a8d0867d53852c4John McCall << getPrintableNameForEntity(Entity) << T; 1203cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 1204cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 1205cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1206c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall assert(!T->isObjCObjectType() && "Should build ObjCObjectPointerType"); 120792e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 1208f85e193739c953358c865005855253af4f68a497John McCall // In ARC, it is forbidden to build pointers to unqualified pointers. 12094e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjCAutoRefCount) 1210f85e193739c953358c865005855253af4f68a497John McCall T = inferARCLifetimeForPointee(*this, T, Loc, /*reference*/ false); 1211f85e193739c953358c865005855253af4f68a497John McCall 1212cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // Build the pointer type. 12132865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getPointerType(T); 1214cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 1215cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1216cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \brief Build a reference type. 1217cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1218cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param T The type to which we'll be building a reference. 1219cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1220cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Loc The location of the entity whose type involves this 1221cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// reference type or, if there is no such entity, the location of the 1222cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type that will have reference type. 1223cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1224cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Entity The name of the entity that involves the reference 1225cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type, if known. 1226cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1227cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \returns A suitable reference type, if there are no 1228cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// errors. Otherwise, returns a NULL type. 122954e14c4db764c0636160d26c5bbf491637c83a76John McCallQualType Sema::BuildReferenceType(QualType T, bool SpelledAsLValue, 12302865474261a608c7873b87ba4af110d17907896dJohn McCall SourceLocation Loc, 123154e14c4db764c0636160d26c5bbf491637c83a76John McCall DeclarationName Entity) { 123291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier assert(Context.getCanonicalType(T) != Context.OverloadTy && 12339625e44c0252485277a340746ed8ac950686156fDouglas Gregor "Unresolved overloaded function type"); 123491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 123569d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // C++0x [dcl.ref]p6: 123691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // If a typedef (7.1.3), a type template-parameter (14.3.1), or a 123791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // decltype-specifier (7.1.6.2) denotes a type TR that is a reference to a 123891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // type T, an attempt to create the type "lvalue reference to cv TR" creates 123991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // the type "lvalue reference to T", while an attempt to create the type 124069d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // "rvalue reference to cv TR" creates the type TR. 124154e14c4db764c0636160d26c5bbf491637c83a76John McCall bool LValueRef = SpelledAsLValue || T->getAs<LValueReferenceType>(); 124254e14c4db764c0636160d26c5bbf491637c83a76John McCall 124354e14c4db764c0636160d26c5bbf491637c83a76John McCall // C++ [dcl.ref]p4: There shall be no references to references. 124454e14c4db764c0636160d26c5bbf491637c83a76John McCall // 124554e14c4db764c0636160d26c5bbf491637c83a76John McCall // According to C++ DR 106, references to references are only 124654e14c4db764c0636160d26c5bbf491637c83a76John McCall // diagnosed when they are written directly (e.g., "int & &"), 124754e14c4db764c0636160d26c5bbf491637c83a76John McCall // but not when they happen via a typedef: 124854e14c4db764c0636160d26c5bbf491637c83a76John McCall // 124954e14c4db764c0636160d26c5bbf491637c83a76John McCall // typedef int& intref; 125054e14c4db764c0636160d26c5bbf491637c83a76John McCall // typedef intref& intref2; 125154e14c4db764c0636160d26c5bbf491637c83a76John McCall // 125254e14c4db764c0636160d26c5bbf491637c83a76John McCall // Parser::ParseDeclaratorInternal diagnoses the case where 125354e14c4db764c0636160d26c5bbf491637c83a76John McCall // references are written directly; here, we handle the 125469d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // collapsing of references-to-references as described in C++0x. 125569d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // DR 106 and 540 introduce reference-collapsing into C++98/03. 1256cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1257cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C++ [dcl.ref]p1: 125833a3138a0862cafdd9ff1332b834454a79cd2cdcEli Friedman // A declarator that specifies the type "reference to cv void" 1259cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // is ill-formed. 1260cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T->isVoidType()) { 1261cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_reference_to_void); 1262cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 1263cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 1264cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1265f85e193739c953358c865005855253af4f68a497John McCall // In ARC, it is forbidden to build references to unqualified pointers. 12664e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjCAutoRefCount) 1267f85e193739c953358c865005855253af4f68a497John McCall T = inferARCLifetimeForPointee(*this, T, Loc, /*reference*/ true); 1268f85e193739c953358c865005855253af4f68a497John McCall 1269cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // Handle restrict on references. 12707c80bd64032e610c0dbd74fc0ef6ea334447f2fdSebastian Redl if (LValueRef) 12712865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getLValueReferenceType(T, SpelledAsLValue); 12722865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getRValueReferenceType(T); 1273cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 1274cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1275e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner/// Check whether the specified array size makes the array type a VLA. If so, 1276e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner/// return true, if not, return the size of the array in SizeVal. 1277282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smithstatic bool isArraySizeVLA(Sema &S, Expr *ArraySize, llvm::APSInt &SizeVal) { 1278282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // If the size is an ICE, it certainly isn't a VLA. If we're in a GNU mode 1279282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // (like gnu99, but not c99) accept any evaluatable value as an extension. 1280ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor class VLADiagnoser : public Sema::VerifyICEDiagnoser { 1281ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor public: 1282ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor VLADiagnoser() : Sema::VerifyICEDiagnoser(true) {} 128391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1284ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor virtual void diagnoseNotICE(Sema &S, SourceLocation Loc, SourceRange SR) { 1285ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor } 128691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1287ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor virtual void diagnoseFold(Sema &S, SourceLocation Loc, SourceRange SR) { 1288ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor S.Diag(Loc, diag::ext_vla_folded_to_constant) << SR; 1289ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor } 1290ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor } Diagnoser; 129191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1292ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor return S.VerifyIntegerConstantExpression(ArraySize, &SizeVal, Diagnoser, 1293ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor S.LangOpts.GNUMode).isInvalid(); 1294e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner} 1295e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner 1296e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner 1297cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \brief Build an array type. 1298cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1299cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param T The type of each element in the array. 1300cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1301cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param ASM C99 array size modifier (e.g., '*', 'static'). 13021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 13031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// \param ArraySize Expression describing the size of the array. 1304cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1305efce31f51d6e7e31e125f96c20f6cdab3ead0a47James Dennett/// \param Brackets The range from the opening '[' to the closing ']'. 1306cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1307cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Entity The name of the entity that involves the array 1308cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type, if known. 1309cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1310cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \returns A suitable array type, if there are no errors. Otherwise, 1311cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// returns a NULL type. 1312cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas GregorQualType Sema::BuildArrayType(QualType T, ArrayType::ArraySizeModifier ASM, 1313cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Expr *ArraySize, unsigned Quals, 13147e7eb3da052a6d80ddf2377cab0384c798f73f75Douglas Gregor SourceRange Brackets, DeclarationName Entity) { 13150953e767ff7817f97b3ab20896b229891eeff45bJohn McCall 13167e7eb3da052a6d80ddf2377cab0384c798f73f75Douglas Gregor SourceLocation Loc = Brackets.getBegin(); 13174e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus) { 1318138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // C++ [dcl.array]p1: 1319138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // T is called the array element type; this type shall not be a reference 132091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // type, the (possibly cv-qualified) type void, a function type or an 1321138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // abstract class type. 1322138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // 1323bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // C++ [dcl.array]p3: 1324bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // When several "array of" specifications are adjacent, [...] only the 1325bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // first of the constant expressions that specify the bounds of the arrays 1326bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // may be omitted. 1327bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // 1328138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // Note: function types are handled in the common path with C. 1329138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor if (T->isReferenceType()) { 1330138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor Diag(Loc, diag::err_illegal_decl_array_of_references) 1331138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor << getPrintableNameForEntity(Entity) << T; 1332138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor return QualType(); 1333138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor } 133491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1335bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith if (T->isVoidType() || T->isIncompleteArrayType()) { 1336923d56d436f750bc1f29db50e641078725558a1bSebastian Redl Diag(Loc, diag::err_illegal_decl_array_incomplete_type) << T; 1337923d56d436f750bc1f29db50e641078725558a1bSebastian Redl return QualType(); 1338923d56d436f750bc1f29db50e641078725558a1bSebastian Redl } 133991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 134091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier if (RequireNonAbstractType(Brackets.getBegin(), T, 1341138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor diag::err_array_of_abstract_type)) 1342138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor return QualType(); 134391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1344923d56d436f750bc1f29db50e641078725558a1bSebastian Redl } else { 1345138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // C99 6.7.5.2p1: If the element type is an incomplete or function type, 1346138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // reject it (e.g. void ary[7], struct foo ary[7], void ary[7]()) 1347923d56d436f750bc1f29db50e641078725558a1bSebastian Redl if (RequireCompleteType(Loc, T, 1348923d56d436f750bc1f29db50e641078725558a1bSebastian Redl diag::err_illegal_decl_array_incomplete_type)) 1349923d56d436f750bc1f29db50e641078725558a1bSebastian Redl return QualType(); 1350923d56d436f750bc1f29db50e641078725558a1bSebastian Redl } 1351cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1352cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T->isFunctionType()) { 1353cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_illegal_decl_array_of_functions) 1354ac406052f7b980f8caa6b07b4a8d0867d53852c4John McCall << getPrintableNameForEntity(Entity) << T; 1355cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 1356cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 13571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 135834b41d939a1328f484511c6002ba2456db879a29Richard Smith if (T->getContainedAutoType()) { 135934b41d939a1328f484511c6002ba2456db879a29Richard Smith Diag(Loc, diag::err_illegal_decl_array_of_auto) 136034b41d939a1328f484511c6002ba2456db879a29Richard Smith << getPrintableNameForEntity(Entity) << T; 1361e7cf07d8df83e083505c7105c50b2797493008a6Anders Carlsson return QualType(); 1362e7cf07d8df83e083505c7105c50b2797493008a6Anders Carlsson } 13631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 13646217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (const RecordType *EltTy = T->getAs<RecordType>()) { 1365cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // If the element type is a struct or union that contains a variadic 1366cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // array, accept it as a GNU extension: C99 6.7.2.1p2. 1367cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (EltTy->getDecl()->hasFlexibleArrayMember()) 1368cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::ext_flexible_array_in_array) << T; 1369c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else if (T->isObjCObjectType()) { 1370c7c11b1ba6a110f2416889cc3576fe33277b2a33Chris Lattner Diag(Loc, diag::err_objc_array_of_interfaces) << T; 1371c7c11b1ba6a110f2416889cc3576fe33277b2a33Chris Lattner return QualType(); 1372cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 13731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1374806054db6653d29cb0d9692df3612cbcd03d0530John McCall // Do placeholder conversions on the array size expression. 1375806054db6653d29cb0d9692df3612cbcd03d0530John McCall if (ArraySize && ArraySize->hasPlaceholderType()) { 1376806054db6653d29cb0d9692df3612cbcd03d0530John McCall ExprResult Result = CheckPlaceholderExpr(ArraySize); 1377806054db6653d29cb0d9692df3612cbcd03d0530John McCall if (Result.isInvalid()) return QualType(); 1378806054db6653d29cb0d9692df3612cbcd03d0530John McCall ArraySize = Result.take(); 1379806054db6653d29cb0d9692df3612cbcd03d0530John McCall } 1380806054db6653d29cb0d9692df3612cbcd03d0530John McCall 13815e3c67b4bd894a926282d24b4d0cbc0e123c9f4aJohn McCall // Do lvalue-to-rvalue conversions on the array size expression. 1382429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ArraySize && !ArraySize->isRValue()) { 1383429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult Result = DefaultLvalueConversion(ArraySize); 1384429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (Result.isInvalid()) 1385429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return QualType(); 1386429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 1387429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ArraySize = Result.take(); 1388429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 13895e3c67b4bd894a926282d24b4d0cbc0e123c9f4aJohn McCall 1390cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C99 6.7.5.2p1: The size expression shall have integer type. 1391282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // C++11 allows contextual conversions to such types. 139280ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith if (!getLangOpts().CPlusPlus11 && 1393282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith ArraySize && !ArraySize->isTypeDependent() && 13941274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor !ArraySize->getType()->isIntegralOrUnscopedEnumerationType()) { 1395cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(ArraySize->getLocStart(), diag::err_array_size_non_int) 1396cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor << ArraySize->getType() << ArraySize->getSourceRange(); 1397cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 1398cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 1399282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith 14002767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor llvm::APSInt ConstVal(Context.getTypeSize(Context.getSizeType())); 1401cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (!ArraySize) { 1402f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman if (ASM == ArrayType::Star) 14037e7eb3da052a6d80ddf2377cab0384c798f73f75Douglas Gregor T = Context.getVariableArrayType(T, 0, ASM, Quals, Brackets); 1404f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman else 1405f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman T = Context.getIncompleteArrayType(T, ASM, Quals); 1406ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor } else if (ArraySize->isTypeDependent() || ArraySize->isValueDependent()) { 14077e7eb3da052a6d80ddf2377cab0384c798f73f75Douglas Gregor T = Context.getDependentSizedArrayType(T, ArraySize, ASM, Quals, Brackets); 1408282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith } else if ((!T->isDependentType() && !T->isIncompleteType() && 1409282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith !T->isConstantSizeType()) || 1410282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith isArraySizeVLA(*this, ArraySize, ConstVal)) { 1411282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // Even in C++11, don't allow contextual conversions in the array bound 1412282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // of a VLA. 141380ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith if (getLangOpts().CPlusPlus11 && 1414282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith !ArraySize->getType()->isIntegralOrUnscopedEnumerationType()) { 1415282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith Diag(ArraySize->getLocStart(), diag::err_array_size_non_int) 1416282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith << ArraySize->getType() << ArraySize->getSourceRange(); 1417282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith return QualType(); 1418282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith } 1419282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith 1420e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner // C99: an array with an element type that has a non-constant-size is a VLA. 1421e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner // C99: an array with a non-ICE size is a VLA. We accept any expression 1422e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner // that we can fold to a non-zero positive value as an extension. 14237e7eb3da052a6d80ddf2377cab0384c798f73f75Douglas Gregor T = Context.getVariableArrayType(T, ArraySize, ASM, Quals, Brackets); 1424cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } else { 1425cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C99 6.7.5.2p1: If the expression is a constant expression, it shall 1426cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // have a value greater than zero. 1427923d56d436f750bc1f29db50e641078725558a1bSebastian Redl if (ConstVal.isSigned() && ConstVal.isNegative()) { 1428b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth if (Entity) 1429b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth Diag(ArraySize->getLocStart(), diag::err_decl_negative_array_size) 1430b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth << getPrintableNameForEntity(Entity) << ArraySize->getSourceRange(); 1431b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth else 1432b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth Diag(ArraySize->getLocStart(), diag::err_typecheck_negative_array_size) 1433b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth << ArraySize->getSourceRange(); 1434923d56d436f750bc1f29db50e641078725558a1bSebastian Redl return QualType(); 1435923d56d436f750bc1f29db50e641078725558a1bSebastian Redl } 1436923d56d436f750bc1f29db50e641078725558a1bSebastian Redl if (ConstVal == 0) { 143702024a9f0d8e6c898de276193af604c42ee41269Douglas Gregor // GCC accepts zero sized static arrays. We allow them when 143802024a9f0d8e6c898de276193af604c42ee41269Douglas Gregor // we're not in a SFINAE context. 143991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier Diag(ArraySize->getLocStart(), 144002024a9f0d8e6c898de276193af604c42ee41269Douglas Gregor isSFINAEContext()? diag::err_typecheck_zero_array_size 144102024a9f0d8e6c898de276193af604c42ee41269Douglas Gregor : diag::ext_typecheck_zero_array_size) 1442923d56d436f750bc1f29db50e641078725558a1bSebastian Redl << ArraySize->getSourceRange(); 144320cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne 144420cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne if (ASM == ArrayType::Static) { 144520cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne Diag(ArraySize->getLocStart(), 144620cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne diag::warn_typecheck_zero_static_array_size) 144720cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne << ArraySize->getSourceRange(); 144820cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne ASM = ArrayType::Normal; 144920cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne } 145091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier } else if (!T->isDependentType() && !T->isVariablyModifiedType() && 14512767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor !T->isIncompleteType()) { 145291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // Is the array too large? 14532767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor unsigned ActiveSizeBits 14542767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor = ConstantArrayType::getNumAddressingBits(Context, T, ConstVal); 14552767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor if (ActiveSizeBits > ConstantArrayType::getMaxSizeBits(Context)) 14562767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor Diag(ArraySize->getLocStart(), diag::err_array_too_large) 14572767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor << ConstVal.toString(10) 14582767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor << ArraySize->getSourceRange(); 14591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 146091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 146146a617a792bfab0d9b1e057371ea3b9540802226John McCall T = Context.getConstantArrayType(T, ConstVal, ASM, Quals); 1462cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 1463af40776922bc5c28e740adb0342faa09f35b0068David Chisnall // If this is not C99, extwarn about VLA's and C99 array size modifiers. 14644e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!getLangOpts().C99) { 14650fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor if (T->isVariableArrayType()) { 14660fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor // Prohibit the use of non-POD types in VLAs. 1467f85e193739c953358c865005855253af4f68a497John McCall QualType BaseT = Context.getBaseElementType(T); 146891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier if (!T->isDependentType() && 14693c7236e01dfb69b370857ccd71c7bcf5ce80b36fDouglas Gregor !BaseT.isPODType(Context) && 14703c7236e01dfb69b370857ccd71c7bcf5ce80b36fDouglas Gregor !BaseT->isObjCLifetimeType()) { 14710fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor Diag(Loc, diag::err_vla_non_pod) 1472f85e193739c953358c865005855253af4f68a497John McCall << BaseT; 14730fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor return QualType(); 147491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier } 1475a481ec4150ad203440852a2bfee0883dd26f7530Douglas Gregor // Prohibit the use of VLAs during template argument deduction. 1476a481ec4150ad203440852a2bfee0883dd26f7530Douglas Gregor else if (isSFINAEContext()) { 1477a481ec4150ad203440852a2bfee0883dd26f7530Douglas Gregor Diag(Loc, diag::err_vla_in_sfinae); 1478a481ec4150ad203440852a2bfee0883dd26f7530Douglas Gregor return QualType(); 1479a481ec4150ad203440852a2bfee0883dd26f7530Douglas Gregor } 14800fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor // Just extwarn about VLAs. 14810fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor else 14820fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor Diag(Loc, diag::ext_vla); 14830fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor } else if (ASM != ArrayType::Normal || Quals != 0) 1484d7c56e1114bfe7d461786903bb720d2c6efc05a1Richard Smith Diag(Loc, 14854e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie getLangOpts().CPlusPlus? diag::err_c99_array_usage_cxx 1486d7c56e1114bfe7d461786903bb720d2c6efc05a1Richard Smith : diag::ext_c99_array_usage) << ASM; 1487cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 1488cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1489cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return T; 1490cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 14919cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor 14929cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor/// \brief Build an ext-vector type. 14939cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor/// 14949cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor/// Run the required checks for the extended vector type. 14959ae2f076ca5ab1feb3ba95629099ec2319833701John McCallQualType Sema::BuildExtVectorType(QualType T, Expr *ArraySize, 14969cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor SourceLocation AttrLoc) { 14979cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor // unlike gcc's vector_size attribute, we do not allow vectors to be defined 14989cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor // in conjunction with complex types (pointers, arrays, functions, etc.). 14991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!T->isDependentType() && 15009cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor !T->isIntegerType() && !T->isRealFloatingType()) { 15019cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor Diag(AttrLoc, diag::err_attribute_invalid_vector_type) << T; 15029cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor return QualType(); 15039cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor } 15049cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor 15059ae2f076ca5ab1feb3ba95629099ec2319833701John McCall if (!ArraySize->isTypeDependent() && !ArraySize->isValueDependent()) { 15069cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor llvm::APSInt vecSize(32); 15079ae2f076ca5ab1feb3ba95629099ec2319833701John McCall if (!ArraySize->isIntegerConstantExpr(vecSize, Context)) { 15089cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor Diag(AttrLoc, diag::err_attribute_argument_not_int) 15099ae2f076ca5ab1feb3ba95629099ec2319833701John McCall << "ext_vector_type" << ArraySize->getSourceRange(); 15109cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor return QualType(); 15119cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor } 15121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // unlike gcc's vector_size attribute, the size is specified as the 15149cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor // number of elements, not the number of bytes. 15151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue()); 15161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15179cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor if (vectorSize == 0) { 15189cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor Diag(AttrLoc, diag::err_attribute_zero_size) 15199ae2f076ca5ab1feb3ba95629099ec2319833701John McCall << ArraySize->getSourceRange(); 15209cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor return QualType(); 15219cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor } 15221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15234ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor return Context.getExtVectorType(T, vectorSize); 15241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 15251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 15269ae2f076ca5ab1feb3ba95629099ec2319833701John McCall return Context.getDependentSizedExtVectorType(T, ArraySize, AttrLoc); 15279cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor} 15281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1529724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// \brief Build a function type. 1530724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// 1531724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// This routine checks the function type according to C++ rules and 1532724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// under the assumption that the result type and parameter types have 1533724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// just been instantiated from a template. It therefore duplicates 15342943aed177b33ae3f14273b11a7b398e5276ec62Douglas Gregor/// some of the behavior of GetTypeForDeclarator, but in a much 1535724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// simpler form that is only suitable for this narrow use case. 1536724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// 1537724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// \param T The return type of the function. 1538724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// 1539724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// \param ParamTypes The parameter types of the function. This array 1540724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// will be modified to account for adjustments to the types of the 1541724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// function parameters. 1542724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// 1543724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// \param NumParamTypes The number of parameter types in ParamTypes. 1544724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// 1545724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// \param Variadic Whether this is a variadic function type. 1546724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// 1547eefb3d5b49c844347f212073a7e975b8118fe8e9Richard Smith/// \param HasTrailingReturn Whether this function has a trailing return type. 1548eefb3d5b49c844347f212073a7e975b8118fe8e9Richard Smith/// 1549724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// \param Quals The cvr-qualifiers to be applied to the function type. 1550724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// 1551724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// \param Loc The location of the entity whose type involves this 1552724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// function type or, if there is no such entity, the location of the 1553724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// type that will have function type. 1554724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// 1555724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// \param Entity The name of the entity that involves the function 1556724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// type, if known. 1557724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// 1558724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// \returns A suitable function type, if there are no 1559724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor/// errors. Otherwise, returns a NULL type. 1560724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas GregorQualType Sema::BuildFunctionType(QualType T, 15611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump QualType *ParamTypes, 1562724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor unsigned NumParamTypes, 1563eefb3d5b49c844347f212073a7e975b8118fe8e9Richard Smith bool Variadic, bool HasTrailingReturn, 1564eefb3d5b49c844347f212073a7e975b8118fe8e9Richard Smith unsigned Quals, 1565c938c1668b4fd12af154e965dd935a89e4801a70Douglas Gregor RefQualifierKind RefQualifier, 1566fa869547eb1cab12d7e0c0dfa8ba594e336b9b32Eli Friedman SourceLocation Loc, DeclarationName Entity, 1567e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall FunctionType::ExtInfo Info) { 1568724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor if (T->isArrayType() || T->isFunctionType()) { 156991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier Diag(Loc, diag::err_func_returning_array_function) 157058408bc4ead86b08af56cd06fc966fd858b48b2dDouglas Gregor << T->isFunctionType() << T; 1571724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor return QualType(); 1572724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor } 1573aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov 1574aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // Functions cannot return half FP. 1575aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov if (T->isHalfType()) { 1576aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov Diag(Loc, diag::err_parameters_retval_cannot_have_fp16_type) << 1 << 1577aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov FixItHint::CreateInsertion(Loc, "*"); 1578aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov return QualType(); 1579aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov } 1580aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov 1581724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor bool Invalid = false; 1582724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor for (unsigned Idx = 0; Idx < NumParamTypes; ++Idx) { 1583aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // FIXME: Loc is too inprecise here, should use proper locations for args. 158479e6bd379773447a74cc3e579d9081e4c5cb6d63Douglas Gregor QualType ParamType = Context.getAdjustedParameterType(ParamTypes[Idx]); 15852dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor if (ParamType->isVoidType()) { 1586724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor Diag(Loc, diag::err_param_with_void_type); 1587724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor Invalid = true; 1588aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov } else if (ParamType->isHalfType()) { 1589aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // Disallow half FP arguments. 1590aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov Diag(Loc, diag::err_parameters_retval_cannot_have_fp16_type) << 0 << 1591aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov FixItHint::CreateInsertion(Loc, "*"); 1592aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov Invalid = true; 1593724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor } 1594cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 159554e14c4db764c0636160d26c5bbf491637c83a76John McCall ParamTypes[Idx] = ParamType; 1596724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor } 1597724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor 1598724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor if (Invalid) 1599724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor return QualType(); 1600724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor 1601e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall FunctionProtoType::ExtProtoInfo EPI; 1602e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI.Variadic = Variadic; 1603eefb3d5b49c844347f212073a7e975b8118fe8e9Richard Smith EPI.HasTrailingReturn = HasTrailingReturn; 1604e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI.TypeQuals = Quals; 1605c938c1668b4fd12af154e965dd935a89e4801a70Douglas Gregor EPI.RefQualifier = RefQualifier; 1606e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI.ExtInfo = Info; 1607e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall 1608e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall return Context.getFunctionType(T, ParamTypes, NumParamTypes, EPI); 1609724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor} 16101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1611949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \brief Build a member pointer type \c T Class::*. 1612949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// 1613949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \param T the type to which the member pointer refers. 1614949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \param Class the class type into which the member pointer points. 1615949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \param Loc the location where this type begins 1616949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \param Entity the name of the entity that will have this member pointer type 1617949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// 1618949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \returns a member pointer type, if successful, or a NULL type if there was 1619949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// an error. 16201eb4433ac451dc16f4133a88af2d002ac26c58efMike StumpQualType Sema::BuildMemberPointerType(QualType T, QualType Class, 16212865474261a608c7873b87ba4af110d17907896dJohn McCall SourceLocation Loc, 1622949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor DeclarationName Entity) { 1623949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // Verify that we're not building a pointer to pointer to function with 1624949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // exception specification. 1625949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (CheckDistantExceptionSpec(T)) { 1626949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor Diag(Loc, diag::err_distant_exception_spec); 1627949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 1628949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // FIXME: If we're doing this as part of template instantiation, 1629949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // we should return immediately. 1630949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 1631949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // Build the type anyway, but use the canonical type so that the 1632949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // exception specifiers are stripped off. 1633949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor T = Context.getCanonicalType(T); 1634949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor } 1635949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 1636737801257f795632175517ffce4a80c62fc7bff7Sebastian Redl // C++ 8.3.3p3: A pointer to member shall not point to ... a member 1637949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // with reference type, or "cv void." 1638949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (T->isReferenceType()) { 16398d4655d3b966da02fe0588767160448594cddd61Anders Carlsson Diag(Loc, diag::err_illegal_decl_mempointer_to_reference) 1640ac406052f7b980f8caa6b07b4a8d0867d53852c4John McCall << (Entity? Entity.getAsString() : "type name") << T; 1641949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor return QualType(); 1642949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor } 1643949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 1644949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (T->isVoidType()) { 1645949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor Diag(Loc, diag::err_illegal_decl_mempointer_to_void) 1646949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor << (Entity? Entity.getAsString() : "type name"); 1647949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor return QualType(); 1648949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor } 1649949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 1650949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (!Class->isDependentType() && !Class->isRecordType()) { 1651949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor Diag(Loc, diag::err_mempointer_in_nonclass_type) << Class; 1652949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor return QualType(); 1653949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor } 1654949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 1655679fc9314c2bde5eb6bea33c790d1a035461e618Joao Matos // In the Microsoft ABI, the class is allowed to be an incomplete 1656679fc9314c2bde5eb6bea33c790d1a035461e618Joao Matos // type. In such cases, the compiler makes a worst-case assumption. 1657679fc9314c2bde5eb6bea33c790d1a035461e618Joao Matos // We make no such assumption right now, so emit an error if the 1658679fc9314c2bde5eb6bea33c790d1a035461e618Joao Matos // class isn't a complete type. 1659679fc9314c2bde5eb6bea33c790d1a035461e618Joao Matos if (Context.getTargetInfo().getCXXABI() == CXXABI_Microsoft && 1660679fc9314c2bde5eb6bea33c790d1a035461e618Joao Matos RequireCompleteType(Loc, Class, diag::err_incomplete_type)) 1661679fc9314c2bde5eb6bea33c790d1a035461e618Joao Matos return QualType(); 1662679fc9314c2bde5eb6bea33c790d1a035461e618Joao Matos 16632865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getMemberPointerType(T, Class.getTypePtr()); 1664949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor} 16651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16669a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// \brief Build a block pointer type. 16679a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// 16689a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// \param T The type to which we'll be building a block pointer. 16699a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// 1670efce31f51d6e7e31e125f96c20f6cdab3ead0a47James Dennett/// \param Loc The source location, used for diagnostics. 16719a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// 16729a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// \param Entity The name of the entity that involves the block pointer 16739a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// type, if known. 16749a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// 16759a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// \returns A suitable block pointer type, if there are no 16769a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// errors. Otherwise, returns a NULL type. 167791cbbbf506c892a26d4301e2b3ccd377b0938817Chad RosierQualType Sema::BuildBlockPointerType(QualType T, 16781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation Loc, 16799a917e4fac79aba20fbd25983c78396475078918Anders Carlsson DeclarationName Entity) { 16800953e767ff7817f97b3ab20896b229891eeff45bJohn McCall if (!T->isFunctionType()) { 16819a917e4fac79aba20fbd25983c78396475078918Anders Carlsson Diag(Loc, diag::err_nonfunction_block_type); 16829a917e4fac79aba20fbd25983c78396475078918Anders Carlsson return QualType(); 16839a917e4fac79aba20fbd25983c78396475078918Anders Carlsson } 16841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16852865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getBlockPointerType(T); 16869a917e4fac79aba20fbd25983c78396475078918Anders Carlsson} 16879a917e4fac79aba20fbd25983c78396475078918Anders Carlsson 1688b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCallQualType Sema::GetTypeFromParser(ParsedType Ty, TypeSourceInfo **TInfo) { 1689b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall QualType QT = Ty.get(); 16903f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor if (QT.isNull()) { 1691a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall if (TInfo) *TInfo = 0; 16923f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor return QualType(); 16933f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor } 16943f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor 1695a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TypeSourceInfo *DI = 0; 1696f4c7371fb1d3cebcfb40abad4537bb82515704eaJohn McCall if (const LocInfoType *LIT = dyn_cast<LocInfoType>(QT)) { 1697e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis QT = LIT->getType(); 1698a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall DI = LIT->getTypeSourceInfo(); 1699e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis } 17001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1701a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall if (TInfo) *TInfo = DI; 1702e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis return QT; 1703e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis} 1704e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis 1705a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidisstatic void transferARCOwnershipToDeclaratorChunk(TypeProcessingState &state, 1706a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis Qualifiers::ObjCLifetime ownership, 1707a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis unsigned chunkIndex); 1708a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis 1709f85e193739c953358c865005855253af4f68a497John McCall/// Given that this is the declaration of a parameter under ARC, 1710f85e193739c953358c865005855253af4f68a497John McCall/// attempt to infer attributes and such for pointer-to-whatever 1711f85e193739c953358c865005855253af4f68a497John McCall/// types. 1712f85e193739c953358c865005855253af4f68a497John McCallstatic void inferARCWriteback(TypeProcessingState &state, 1713f85e193739c953358c865005855253af4f68a497John McCall QualType &declSpecType) { 1714f85e193739c953358c865005855253af4f68a497John McCall Sema &S = state.getSema(); 1715f85e193739c953358c865005855253af4f68a497John McCall Declarator &declarator = state.getDeclarator(); 1716f85e193739c953358c865005855253af4f68a497John McCall 1717f85e193739c953358c865005855253af4f68a497John McCall // TODO: should we care about decl qualifiers? 1718f85e193739c953358c865005855253af4f68a497John McCall 1719f85e193739c953358c865005855253af4f68a497John McCall // Check whether the declarator has the expected form. We walk 1720f85e193739c953358c865005855253af4f68a497John McCall // from the inside out in order to make the block logic work. 1721f85e193739c953358c865005855253af4f68a497John McCall unsigned outermostPointerIndex = 0; 1722f85e193739c953358c865005855253af4f68a497John McCall bool isBlockPointer = false; 1723f85e193739c953358c865005855253af4f68a497John McCall unsigned numPointers = 0; 1724f85e193739c953358c865005855253af4f68a497John McCall for (unsigned i = 0, e = declarator.getNumTypeObjects(); i != e; ++i) { 1725f85e193739c953358c865005855253af4f68a497John McCall unsigned chunkIndex = i; 1726f85e193739c953358c865005855253af4f68a497John McCall DeclaratorChunk &chunk = declarator.getTypeObject(chunkIndex); 1727f85e193739c953358c865005855253af4f68a497John McCall switch (chunk.Kind) { 1728f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Paren: 1729f85e193739c953358c865005855253af4f68a497John McCall // Ignore parens. 1730f85e193739c953358c865005855253af4f68a497John McCall break; 1731f85e193739c953358c865005855253af4f68a497John McCall 1732f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Reference: 1733f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Pointer: 1734f85e193739c953358c865005855253af4f68a497John McCall // Count the number of pointers. Treat references 1735f85e193739c953358c865005855253af4f68a497John McCall // interchangeably as pointers; if they're mis-ordered, normal 1736f85e193739c953358c865005855253af4f68a497John McCall // type building will discover that. 1737f85e193739c953358c865005855253af4f68a497John McCall outermostPointerIndex = chunkIndex; 1738f85e193739c953358c865005855253af4f68a497John McCall numPointers++; 1739f85e193739c953358c865005855253af4f68a497John McCall break; 1740f85e193739c953358c865005855253af4f68a497John McCall 1741f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::BlockPointer: 1742f85e193739c953358c865005855253af4f68a497John McCall // If we have a pointer to block pointer, that's an acceptable 1743f85e193739c953358c865005855253af4f68a497John McCall // indirect reference; anything else is not an application of 1744f85e193739c953358c865005855253af4f68a497John McCall // the rules. 1745f85e193739c953358c865005855253af4f68a497John McCall if (numPointers != 1) return; 1746f85e193739c953358c865005855253af4f68a497John McCall numPointers++; 1747f85e193739c953358c865005855253af4f68a497John McCall outermostPointerIndex = chunkIndex; 1748f85e193739c953358c865005855253af4f68a497John McCall isBlockPointer = true; 1749f85e193739c953358c865005855253af4f68a497John McCall 1750f85e193739c953358c865005855253af4f68a497John McCall // We don't care about pointer structure in return values here. 1751f85e193739c953358c865005855253af4f68a497John McCall goto done; 1752f85e193739c953358c865005855253af4f68a497John McCall 1753f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Array: // suppress if written (id[])? 1754f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Function: 1755f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::MemberPointer: 1756f85e193739c953358c865005855253af4f68a497John McCall return; 1757f85e193739c953358c865005855253af4f68a497John McCall } 1758f85e193739c953358c865005855253af4f68a497John McCall } 1759f85e193739c953358c865005855253af4f68a497John McCall done: 1760f85e193739c953358c865005855253af4f68a497John McCall 1761f85e193739c953358c865005855253af4f68a497John McCall // If we have *one* pointer, then we want to throw the qualifier on 1762f85e193739c953358c865005855253af4f68a497John McCall // the declaration-specifiers, which means that it needs to be a 1763f85e193739c953358c865005855253af4f68a497John McCall // retainable object type. 1764f85e193739c953358c865005855253af4f68a497John McCall if (numPointers == 1) { 1765f85e193739c953358c865005855253af4f68a497John McCall // If it's not a retainable object type, the rule doesn't apply. 1766f85e193739c953358c865005855253af4f68a497John McCall if (!declSpecType->isObjCRetainableType()) return; 1767f85e193739c953358c865005855253af4f68a497John McCall 1768f85e193739c953358c865005855253af4f68a497John McCall // If it already has lifetime, don't do anything. 1769f85e193739c953358c865005855253af4f68a497John McCall if (declSpecType.getObjCLifetime()) return; 1770f85e193739c953358c865005855253af4f68a497John McCall 1771f85e193739c953358c865005855253af4f68a497John McCall // Otherwise, modify the type in-place. 1772f85e193739c953358c865005855253af4f68a497John McCall Qualifiers qs; 177391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1774f85e193739c953358c865005855253af4f68a497John McCall if (declSpecType->isObjCARCImplicitlyUnretainedType()) 1775f85e193739c953358c865005855253af4f68a497John McCall qs.addObjCLifetime(Qualifiers::OCL_ExplicitNone); 1776f85e193739c953358c865005855253af4f68a497John McCall else 1777f85e193739c953358c865005855253af4f68a497John McCall qs.addObjCLifetime(Qualifiers::OCL_Autoreleasing); 1778f85e193739c953358c865005855253af4f68a497John McCall declSpecType = S.Context.getQualifiedType(declSpecType, qs); 1779f85e193739c953358c865005855253af4f68a497John McCall 1780f85e193739c953358c865005855253af4f68a497John McCall // If we have *two* pointers, then we want to throw the qualifier on 1781f85e193739c953358c865005855253af4f68a497John McCall // the outermost pointer. 1782f85e193739c953358c865005855253af4f68a497John McCall } else if (numPointers == 2) { 1783f85e193739c953358c865005855253af4f68a497John McCall // If we don't have a block pointer, we need to check whether the 1784f85e193739c953358c865005855253af4f68a497John McCall // declaration-specifiers gave us something that will turn into a 1785f85e193739c953358c865005855253af4f68a497John McCall // retainable object pointer after we slap the first pointer on it. 1786f85e193739c953358c865005855253af4f68a497John McCall if (!isBlockPointer && !declSpecType->isObjCObjectType()) 1787f85e193739c953358c865005855253af4f68a497John McCall return; 1788f85e193739c953358c865005855253af4f68a497John McCall 1789f85e193739c953358c865005855253af4f68a497John McCall // Look for an explicit lifetime attribute there. 1790f85e193739c953358c865005855253af4f68a497John McCall DeclaratorChunk &chunk = declarator.getTypeObject(outermostPointerIndex); 17911c73dcbe1f1921bad8311cfb5089d30b4bd75b66Argyrios Kyrtzidis if (chunk.Kind != DeclaratorChunk::Pointer && 17921c73dcbe1f1921bad8311cfb5089d30b4bd75b66Argyrios Kyrtzidis chunk.Kind != DeclaratorChunk::BlockPointer) 17931c73dcbe1f1921bad8311cfb5089d30b4bd75b66Argyrios Kyrtzidis return; 1794f85e193739c953358c865005855253af4f68a497John McCall for (const AttributeList *attr = chunk.getAttrs(); attr; 1795f85e193739c953358c865005855253af4f68a497John McCall attr = attr->getNext()) 17968e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr->getKind() == AttributeList::AT_ObjCOwnership) 1797f85e193739c953358c865005855253af4f68a497John McCall return; 1798f85e193739c953358c865005855253af4f68a497John McCall 1799a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis transferARCOwnershipToDeclaratorChunk(state, Qualifiers::OCL_Autoreleasing, 1800a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis outermostPointerIndex); 1801f85e193739c953358c865005855253af4f68a497John McCall 1802f85e193739c953358c865005855253af4f68a497John McCall // Any other number of pointers/references does not trigger the rule. 1803f85e193739c953358c865005855253af4f68a497John McCall } else return; 1804f85e193739c953358c865005855253af4f68a497John McCall 1805f85e193739c953358c865005855253af4f68a497John McCall // TODO: mark whether we did this inference? 1806f85e193739c953358c865005855253af4f68a497John McCall} 1807f85e193739c953358c865005855253af4f68a497John McCall 1808d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruthstatic void DiagnoseIgnoredQualifiers(unsigned Quals, 1809d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth SourceLocation ConstQualLoc, 1810d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth SourceLocation VolatileQualLoc, 1811d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth SourceLocation RestrictQualLoc, 1812d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth Sema& S) { 1813d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth std::string QualStr; 1814d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth unsigned NumQuals = 0; 1815d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth SourceLocation Loc; 1816d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 1817d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth FixItHint ConstFixIt; 1818d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth FixItHint VolatileFixIt; 1819d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth FixItHint RestrictFixIt; 1820d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 1821a08fcb8105bf53f3640ad17f61bdcde2d8ace78aHans Wennborg const SourceManager &SM = S.getSourceManager(); 1822a08fcb8105bf53f3640ad17f61bdcde2d8ace78aHans Wennborg 1823d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth // FIXME: The locations here are set kind of arbitrarily. It'd be nicer to 1824d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth // find a range and grow it to encompass all the qualifiers, regardless of 1825d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth // the order in which they textually appear. 1826d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth if (Quals & Qualifiers::Const) { 1827d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth ConstFixIt = FixItHint::CreateRemoval(ConstQualLoc); 1828d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth QualStr = "const"; 1829a08fcb8105bf53f3640ad17f61bdcde2d8ace78aHans Wennborg ++NumQuals; 1830a08fcb8105bf53f3640ad17f61bdcde2d8ace78aHans Wennborg if (!Loc.isValid() || SM.isBeforeInTranslationUnit(ConstQualLoc, Loc)) 1831a08fcb8105bf53f3640ad17f61bdcde2d8ace78aHans Wennborg Loc = ConstQualLoc; 1832d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth } 1833d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth if (Quals & Qualifiers::Volatile) { 1834d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth VolatileFixIt = FixItHint::CreateRemoval(VolatileQualLoc); 1835a08fcb8105bf53f3640ad17f61bdcde2d8ace78aHans Wennborg QualStr += (NumQuals == 0 ? "volatile" : " volatile"); 1836d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth ++NumQuals; 1837a08fcb8105bf53f3640ad17f61bdcde2d8ace78aHans Wennborg if (!Loc.isValid() || SM.isBeforeInTranslationUnit(VolatileQualLoc, Loc)) 1838a08fcb8105bf53f3640ad17f61bdcde2d8ace78aHans Wennborg Loc = VolatileQualLoc; 1839d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth } 1840d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth if (Quals & Qualifiers::Restrict) { 1841d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth RestrictFixIt = FixItHint::CreateRemoval(RestrictQualLoc); 1842a08fcb8105bf53f3640ad17f61bdcde2d8ace78aHans Wennborg QualStr += (NumQuals == 0 ? "restrict" : " restrict"); 1843d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth ++NumQuals; 1844a08fcb8105bf53f3640ad17f61bdcde2d8ace78aHans Wennborg if (!Loc.isValid() || SM.isBeforeInTranslationUnit(RestrictQualLoc, Loc)) 1845a08fcb8105bf53f3640ad17f61bdcde2d8ace78aHans Wennborg Loc = RestrictQualLoc; 1846d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth } 1847d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 1848d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth assert(NumQuals > 0 && "No known qualifiers?"); 1849d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 1850d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth S.Diag(Loc, diag::warn_qual_return_type) 1851a08fcb8105bf53f3640ad17f61bdcde2d8ace78aHans Wennborg << QualStr << NumQuals << ConstFixIt << VolatileFixIt << RestrictFixIt; 1852d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth} 1853d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 18548cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidisstatic QualType GetDeclSpecTypeForDeclarator(TypeProcessingState &state, 18558cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis TypeSourceInfo *&ReturnTypeInfo) { 18568cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Sema &SemaRef = state.getSema(); 18578cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Declarator &D = state.getDeclarator(); 1858930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor QualType T; 18598cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis ReturnTypeInfo = 0; 1860711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 18618cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // The TagDecl owned by the DeclSpec. 18628cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis TagDecl *OwnedTagDecl = 0; 18638999fe1bc367b3ecc878d135c7b31e3479da56f4Sebastian Redl 18643f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor switch (D.getName().getKind()) { 186598a5403ecf1d2b60ae8cbf43e54194bd762cacaaFariborz Jahanian case UnqualifiedId::IK_ImplicitSelfParam: 18663f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor case UnqualifiedId::IK_OperatorFunctionId: 18678999fe1bc367b3ecc878d135c7b31e3479da56f4Sebastian Redl case UnqualifiedId::IK_Identifier: 18680486d746019f8310589b1f0d92edcc4bb3916b33Sean Hunt case UnqualifiedId::IK_LiteralOperatorId: 18693f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor case UnqualifiedId::IK_TemplateId: 18708cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = ConvertDeclSpecToType(state); 187191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1872591bd3cb605f1f0229b4b1d8a4b8183377064ec5Douglas Gregor if (!D.isInvalidType() && D.getDeclSpec().isTypeSpecOwned()) { 1873d3880f8458bb6a03818ee01f758c32f945de3eaaArgyrios Kyrtzidis OwnedTagDecl = cast<TagDecl>(D.getDeclSpec().getRepAsDecl()); 187415987970eeaa1842c29ec8797affd1c1dea05585Abramo Bagnara // Owned declaration is embedded in declarator. 1875d3880f8458bb6a03818ee01f758c32f945de3eaaArgyrios Kyrtzidis OwnedTagDecl->setEmbeddedInDeclarator(true); 1876591bd3cb605f1f0229b4b1d8a4b8183377064ec5Douglas Gregor } 1877930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor break; 1878930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 18793f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor case UnqualifiedId::IK_ConstructorName: 18800efc2c1716be4f1c5f1343cad3b047e74861f030Douglas Gregor case UnqualifiedId::IK_ConstructorTemplateId: 18813f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor case UnqualifiedId::IK_DestructorName: 1882930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // Constructors and destructors don't have return types. Use 188391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // "void" instead. 18848cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = SemaRef.Context.VoidTy; 1885a78a640c5f59720f2c2b8034eca4fbf8525d9026Rafael Espindola if (AttributeList *attrs = D.getDeclSpec().getAttributes().getList()) 1886f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith processTypeAttrs(state, T, TAL_DeclSpec, attrs); 1887930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor break; 188848026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor 188948026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor case UnqualifiedId::IK_ConversionFunctionId: 189048026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor // The result type of a conversion function is the type that it 189148026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor // converts to. 189291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier T = SemaRef.GetTypeFromParser(D.getName().ConversionFunctionId, 18938cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis &ReturnTypeInfo); 189448026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor break; 1895930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 1896dab60ad68a3a98d687305941a3852e793705f945Douglas Gregor 1897711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (D.getAttributes()) 1898711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeTypeAttrsFromDeclarator(state, T); 1899711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 1900d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // C++11 [dcl.spec.auto]p5: reject 'auto' if it is not in an allowed context. 1901d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // In C++11, a function declarator using 'auto' must have a trailing return 19028110f04b39fd028496dd6bf9e3a78278c3e0a6adRichard Smith // type (this is checked later) and we can skip this. In other languages 19038110f04b39fd028496dd6bf9e3a78278c3e0a6adRichard Smith // using auto, we need to check regardless. 190434b41d939a1328f484511c6002ba2456db879a29Richard Smith if (D.getDeclSpec().getTypeSpecType() == DeclSpec::TST_auto && 190580ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith (!SemaRef.getLangOpts().CPlusPlus11 || !D.isFunctionDeclarator())) { 1906baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson int Error = -1; 19071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1908baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson switch (D.getContext()) { 1909baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::KNRTypeListContext: 1910b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("K&R type lists aren't allowed in C++"); 1911f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman case Declarator::LambdaExprContext: 1912f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman llvm_unreachable("Can't specify a type specifier in lambda grammar"); 1913cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCParameterContext: 1914cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCResultContext: 1915baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::PrototypeContext: 1916baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson Error = 0; // Function prototype 1917baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 1918baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::MemberContext: 19197a614d8380297fcd2bc23986241905d97222948cRichard Smith if (D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static) 19207a614d8380297fcd2bc23986241905d97222948cRichard Smith break; 19218cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis switch (cast<TagDecl>(SemaRef.CurContext)->getTagKind()) { 1922eb2d1f1c88836bd5382e5d7aa8f6b85148a88b27David Blaikie case TTK_Enum: llvm_unreachable("unhandled tag kind"); 1923465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara case TTK_Struct: Error = 1; /* Struct member */ break; 1924465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara case TTK_Union: Error = 2; /* Union member */ break; 1925465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara case TTK_Class: Error = 3; /* Class member */ break; 19266666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos case TTK_Interface: Error = 4; /* Interface member */ break; 19271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 1928baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 1929baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::CXXCatchContext: 193017b6399f8461c5b7e1c6f367b0a0dde49f921240Argyrios Kyrtzidis case Declarator::ObjCCatchContext: 19316666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 5; // Exception declaration 1932baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 1933baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::TemplateParamContext: 19346666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 6; // Template parameter 1935baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 1936baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::BlockLiteralContext: 19376666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 7; // Block literal 193834b41d939a1328f484511c6002ba2456db879a29Richard Smith break; 193934b41d939a1328f484511c6002ba2456db879a29Richard Smith case Declarator::TemplateTypeArgContext: 19406666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 8; // Template type argument 194134b41d939a1328f484511c6002ba2456db879a29Richard Smith break; 1942162e1c1b487352434552147967c3dd296ebee2f7Richard Smith case Declarator::AliasDeclContext: 19433e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith case Declarator::AliasTemplateContext: 19446666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 10; // Type alias 1945162e1c1b487352434552147967c3dd296ebee2f7Richard Smith break; 19467796eb5643244f3134834253ce5ea89107ac21c1Richard Smith case Declarator::TrailingReturnContext: 19476666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 11; // Function return type 19487796eb5643244f3134834253ce5ea89107ac21c1Richard Smith break; 194934b41d939a1328f484511c6002ba2456db879a29Richard Smith case Declarator::TypeNameContext: 19506666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 12; // Generic 1951baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 1952baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::FileContext: 1953baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::BlockContext: 1954baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::ForContext: 1955baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::ConditionContext: 19560b8c98f3ddf83adcb9e9d98b68ce38e970cdee73Argyrios Kyrtzidis case Declarator::CXXNewContext: 1957baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 1958baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson } 1959baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson 1960ddc83f9255834217f0559b09ff75a1c50b8ce457Richard Smith if (D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_typedef) 19616666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 9; 1962ddc83f9255834217f0559b09ff75a1c50b8ce457Richard Smith 19638110f04b39fd028496dd6bf9e3a78278c3e0a6adRichard Smith // In Objective-C it is an error to use 'auto' on a function declarator. 19648110f04b39fd028496dd6bf9e3a78278c3e0a6adRichard Smith if (D.isFunctionDeclarator()) 19656666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 11; 19668110f04b39fd028496dd6bf9e3a78278c3e0a6adRichard Smith 1967d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // C++11 [dcl.spec.auto]p2: 'auto' is always fine if the declarator 1968e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // contains a trailing return type. That is only legal at the outermost 1969e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // level. Check all declarator chunks (outermost first) anyway, to give 1970e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // better diagnostics. 197180ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith if (SemaRef.getLangOpts().CPlusPlus11 && Error != -1) { 1972e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 1973e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith unsigned chunkIndex = e - i - 1; 1974e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith state.setCurrentChunkIndex(chunkIndex); 1975e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith DeclaratorChunk &DeclType = D.getTypeObject(chunkIndex); 1976e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith if (DeclType.Kind == DeclaratorChunk::Function) { 1977e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith const DeclaratorChunk::FunctionTypeInfo &FTI = DeclType.Fun; 197854655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith if (FTI.hasTrailingReturnType()) { 1979e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith Error = -1; 1980e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith break; 1981e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 1982e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 1983e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 1984e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 1985e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith 1986baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson if (Error != -1) { 19878cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis SemaRef.Diag(D.getDeclSpec().getTypeSpecTypeLoc(), 19888cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis diag::err_auto_not_allowed) 1989baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson << Error; 19908cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = SemaRef.Context.IntTy; 1991baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson D.setInvalidType(true); 19920aa86c0463a881be85fd34e04c7de3379997621dRichard Smith } else 19930aa86c0463a881be85fd34e04c7de3379997621dRichard Smith SemaRef.Diag(D.getDeclSpec().getTypeSpecTypeLoc(), 19940aa86c0463a881be85fd34e04c7de3379997621dRichard Smith diag::warn_cxx98_compat_auto_type_specifier); 1995baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson } 19968cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 19974e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (SemaRef.getLangOpts().CPlusPlus && 19985e1cdac63c3d9c9b32fa41fa0b2d242a58a20d49John McCall OwnedTagDecl && OwnedTagDecl->isCompleteDefinition()) { 19998cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // Check the contexts where C++ forbids the declaration of a new class 20008cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // or enumeration in a type-specifier-seq. 20018cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis switch (D.getContext()) { 20027796eb5643244f3134834253ce5ea89107ac21c1Richard Smith case Declarator::TrailingReturnContext: 20037796eb5643244f3134834253ce5ea89107ac21c1Richard Smith // Class and enumeration definitions are syntactically not allowed in 20047796eb5643244f3134834253ce5ea89107ac21c1Richard Smith // trailing return types. 20057796eb5643244f3134834253ce5ea89107ac21c1Richard Smith llvm_unreachable("parser should not have allowed this"); 20067796eb5643244f3134834253ce5ea89107ac21c1Richard Smith break; 20078cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::FileContext: 20088cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::MemberContext: 20098cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::BlockContext: 20108cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::ForContext: 20118cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::BlockLiteralContext: 2012f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman case Declarator::LambdaExprContext: 2013d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // C++11 [dcl.type]p3: 20148cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // A type-specifier-seq shall not define a class or enumeration unless 20158cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // it appears in the type-id of an alias-declaration (7.1.3) that is not 20168cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // the declaration of a template-declaration. 20178cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::AliasDeclContext: 20188cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 20198cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::AliasTemplateContext: 20208cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis SemaRef.Diag(OwnedTagDecl->getLocation(), 20218cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis diag::err_type_defined_in_alias_template) 20228cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis << SemaRef.Context.getTypeDeclType(OwnedTagDecl); 2023601e6e894c2a38243588b375bed0b9a9e60060bbEnea Zaffanella D.setInvalidType(true); 20248cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 20258cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::TypeNameContext: 20268cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::TemplateParamContext: 20278cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::CXXNewContext: 20288cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::CXXCatchContext: 20298cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::ObjCCatchContext: 20308cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::TemplateTypeArgContext: 20318cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis SemaRef.Diag(OwnedTagDecl->getLocation(), 20328cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis diag::err_type_defined_in_type_specifier) 20338cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis << SemaRef.Context.getTypeDeclType(OwnedTagDecl); 2034601e6e894c2a38243588b375bed0b9a9e60060bbEnea Zaffanella D.setInvalidType(true); 20358cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 20368cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::PrototypeContext: 2037cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCParameterContext: 2038cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCResultContext: 20398cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::KNRTypeListContext: 20408cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // C++ [dcl.fct]p6: 20418cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // Types shall not be defined in return or parameter types. 20428cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis SemaRef.Diag(OwnedTagDecl->getLocation(), 20438cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis diag::err_type_defined_in_param_type) 20448cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis << SemaRef.Context.getTypeDeclType(OwnedTagDecl); 2045601e6e894c2a38243588b375bed0b9a9e60060bbEnea Zaffanella D.setInvalidType(true); 20468cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 20478cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::ConditionContext: 20488cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // C++ 6.4p2: 20498cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // The type-specifier-seq shall not contain typedef and shall not declare 20508cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // a new class or enumeration. 20518cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis SemaRef.Diag(OwnedTagDecl->getLocation(), 20528cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis diag::err_type_defined_in_condition); 2053601e6e894c2a38243588b375bed0b9a9e60060bbEnea Zaffanella D.setInvalidType(true); 20548cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 20558cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis } 20568cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis } 20578cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 20588cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis return T; 20598cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis} 20608cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 2061a08c2fb74ef823c185619ecc532f8fced6a1982fBenjamin Kramerstatic std::string getFunctionQualifiersAsString(const FunctionProtoType *FnTy){ 2062d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith std::string Quals = 2063d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith Qualifiers::fromCVRMask(FnTy->getTypeQuals()).getAsString(); 2064d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2065d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith switch (FnTy->getRefQualifier()) { 2066d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case RQ_None: 2067d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith break; 2068d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2069d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case RQ_LValue: 2070d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (!Quals.empty()) 2071d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith Quals += ' '; 2072d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith Quals += '&'; 2073d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith break; 2074d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2075d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case RQ_RValue: 2076d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (!Quals.empty()) 2077d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith Quals += ' '; 2078d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith Quals += "&&"; 2079d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith break; 2080d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith } 2081d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2082d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith return Quals; 2083d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith} 2084d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2085d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith/// Check that the function type T, which has a cv-qualifier or a ref-qualifier, 2086d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith/// can be contained within the declarator chunk DeclType, and produce an 2087d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith/// appropriate diagnostic if not. 2088d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smithstatic void checkQualifiedFunction(Sema &S, QualType T, 2089d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith DeclaratorChunk &DeclType) { 2090d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // C++98 [dcl.fct]p4 / C++11 [dcl.fct]p6: a function type with a 2091d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // cv-qualifier or a ref-qualifier can only appear at the topmost level 2092d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // of a type. 2093d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith int DiagKind = -1; 2094d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith switch (DeclType.Kind) { 2095d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case DeclaratorChunk::Paren: 2096d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case DeclaratorChunk::MemberPointer: 2097d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // These cases are permitted. 2098d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith return; 2099d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case DeclaratorChunk::Array: 2100d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case DeclaratorChunk::Function: 2101d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // These cases don't allow function types at all; no need to diagnose the 2102d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // qualifiers separately. 2103d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith return; 2104d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case DeclaratorChunk::BlockPointer: 2105d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith DiagKind = 0; 2106d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith break; 2107d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case DeclaratorChunk::Pointer: 2108d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith DiagKind = 1; 2109d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith break; 2110d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case DeclaratorChunk::Reference: 2111d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith DiagKind = 2; 2112d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith break; 2113d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith } 2114d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2115d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith assert(DiagKind != -1); 2116d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith S.Diag(DeclType.Loc, diag::err_compound_qualified_function_type) 2117d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith << DiagKind << isa<FunctionType>(T.IgnoreParens()) << T 2118d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith << getFunctionQualifiersAsString(T->castAs<FunctionProtoType>()); 2119d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith} 2120d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2121b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith/// Produce an approprioate diagnostic for an ambiguity between a function 2122b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith/// declarator and a C++ direct-initializer. 2123b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smithstatic void warnAboutAmbiguousFunction(Sema &S, Declarator &D, 2124b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith DeclaratorChunk &DeclType, QualType RT) { 2125b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith const DeclaratorChunk::FunctionTypeInfo &FTI = DeclType.Fun; 2126b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith assert(FTI.isAmbiguous && "no direct-initializer / function ambiguity"); 2127b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2128b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // If the return type is void there is no ambiguity. 2129b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (RT->isVoidType()) 2130b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 2131b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2132b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // An initializer for a non-class type can have at most one argument. 2133b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (!RT->isRecordType() && FTI.NumArgs > 1) 2134b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 2135b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2136b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // An initializer for a reference must have exactly one argument. 2137b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (RT->isReferenceType() && FTI.NumArgs != 1) 2138b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 2139b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2140b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // Only warn if this declarator is declaring a function at block scope, and 2141b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // doesn't have a storage class (such as 'extern') specified. 2142b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (!D.isFunctionDeclarator() || 2143b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith D.getFunctionDefinitionKind() != FDK_Declaration || 2144b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith !S.CurContext->isFunctionOrMethod() || 2145b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith D.getDeclSpec().getStorageClassSpecAsWritten() 2146b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith != DeclSpec::SCS_unspecified) 2147b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 2148b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2149b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // Inside a condition, a direct initializer is not permitted. We allow one to 2150b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // be parsed in order to give better diagnostics in condition parsing. 2151b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (D.getContext() == Declarator::ConditionContext) 2152b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 2153b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2154b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith SourceRange ParenRange(DeclType.Loc, DeclType.EndLoc); 2155b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2156d64effc4e31044c05d6e4400150edb26e914983aRichard Smith S.Diag(DeclType.Loc, 2157d64effc4e31044c05d6e4400150edb26e914983aRichard Smith FTI.NumArgs ? diag::warn_parens_disambiguated_as_function_declaration 2158d64effc4e31044c05d6e4400150edb26e914983aRichard Smith : diag::warn_empty_parens_are_function_decl) 2159d64effc4e31044c05d6e4400150edb26e914983aRichard Smith << ParenRange; 2160d64effc4e31044c05d6e4400150edb26e914983aRichard Smith 2161d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // If the declaration looks like: 2162d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // T var1, 2163d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // f(); 2164d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // and name lookup finds a function named 'f', then the ',' was 2165d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // probably intended to be a ';'. 2166d64effc4e31044c05d6e4400150edb26e914983aRichard Smith if (!D.isFirstDeclarator() && D.getIdentifier()) { 2167d64effc4e31044c05d6e4400150edb26e914983aRichard Smith FullSourceLoc Comma(D.getCommaLoc(), S.SourceMgr); 2168d64effc4e31044c05d6e4400150edb26e914983aRichard Smith FullSourceLoc Name(D.getIdentifierLoc(), S.SourceMgr); 2169d64effc4e31044c05d6e4400150edb26e914983aRichard Smith if (Comma.getFileID() != Name.getFileID() || 2170d64effc4e31044c05d6e4400150edb26e914983aRichard Smith Comma.getSpellingLineNumber() != Name.getSpellingLineNumber()) { 2171d64effc4e31044c05d6e4400150edb26e914983aRichard Smith LookupResult Result(S, D.getIdentifier(), SourceLocation(), 2172d64effc4e31044c05d6e4400150edb26e914983aRichard Smith Sema::LookupOrdinaryName); 2173d64effc4e31044c05d6e4400150edb26e914983aRichard Smith if (S.LookupName(Result, S.getCurScope())) 2174d64effc4e31044c05d6e4400150edb26e914983aRichard Smith S.Diag(D.getCommaLoc(), diag::note_empty_parens_function_call) 2175d64effc4e31044c05d6e4400150edb26e914983aRichard Smith << FixItHint::CreateReplacement(D.getCommaLoc(), ";") 2176d64effc4e31044c05d6e4400150edb26e914983aRichard Smith << D.getIdentifier(); 2177d64effc4e31044c05d6e4400150edb26e914983aRichard Smith } 2178d64effc4e31044c05d6e4400150edb26e914983aRichard Smith } 2179b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2180d64effc4e31044c05d6e4400150edb26e914983aRichard Smith if (FTI.NumArgs > 0) { 2181d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // For a declaration with parameters, eg. "T var(T());", suggest adding parens 2182d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // around the first parameter to turn the declaration into a variable 2183d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // declaration. 2184b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith SourceRange Range = FTI.ArgInfo[0].Param->getSourceRange(); 2185b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith SourceLocation B = Range.getBegin(); 2186b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith SourceLocation E = S.PP.getLocForEndOfToken(Range.getEnd()); 2187b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // FIXME: Maybe we should suggest adding braces instead of parens 2188b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // in C++11 for classes that don't have an initializer_list constructor. 2189b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith S.Diag(B, diag::note_additional_parens_for_variable_declaration) 2190b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith << FixItHint::CreateInsertion(B, "(") 2191b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith << FixItHint::CreateInsertion(E, ")"); 2192d64effc4e31044c05d6e4400150edb26e914983aRichard Smith } else { 2193d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // For a declaration without parameters, eg. "T var();", suggest replacing the 2194d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // parens with an initializer to turn the declaration into a variable 2195d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // declaration. 2196b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith const CXXRecordDecl *RD = RT->getAsCXXRecordDecl(); 2197d64effc4e31044c05d6e4400150edb26e914983aRichard Smith 2198b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // Empty parens mean value-initialization, and no parens mean 2199b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // default initialization. These are equivalent if the default 2200b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // constructor is user-provided or if zero-initialization is a 2201b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // no-op. 2202b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (RD && RD->hasDefinition() && 2203b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith (RD->isEmpty() || RD->hasUserProvidedDefaultConstructor())) 2204b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith S.Diag(DeclType.Loc, diag::note_empty_parens_default_ctor) 2205b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith << FixItHint::CreateRemoval(ParenRange); 2206b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith else { 2207b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith std::string Init = S.getFixItZeroInitializerForType(RT); 220880ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith if (Init.empty() && S.LangOpts.CPlusPlus11) 2209b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith Init = "{}"; 2210b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (!Init.empty()) 2211b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith S.Diag(DeclType.Loc, diag::note_empty_parens_zero_initialize) 2212b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith << FixItHint::CreateReplacement(ParenRange, Init); 2213b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith } 2214b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith } 2215b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith} 2216b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 22178cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidisstatic TypeSourceInfo *GetFullTypeForDeclarator(TypeProcessingState &state, 22188cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis QualType declSpecType, 22198cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis TypeSourceInfo *TInfo) { 22208cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 22218cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis QualType T = declSpecType; 22228cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Declarator &D = state.getDeclarator(); 22238cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Sema &S = state.getSema(); 22248cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis ASTContext &Context = S.Context; 22254e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie const LangOptions &LangOpts = S.getLangOpts(); 22268cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 2227cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // The name we're declaring, if any. 2228cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor DeclarationName Name; 2229cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (D.getIdentifier()) 2230cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Name = D.getIdentifier(); 22311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2232162e1c1b487352434552147967c3dd296ebee2f7Richard Smith // Does this declaration declare a typedef-name? 2233162e1c1b487352434552147967c3dd296ebee2f7Richard Smith bool IsTypedefName = 2234162e1c1b487352434552147967c3dd296ebee2f7Richard Smith D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_typedef || 22353e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith D.getContext() == Declarator::AliasDeclContext || 22363e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith D.getContext() == Declarator::AliasTemplateContext; 2237162e1c1b487352434552147967c3dd296ebee2f7Richard Smith 2238d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // Does T refer to a function type with a cv-qualifier or a ref-qualifier? 2239d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith bool IsQualifiedFunction = T->isFunctionProtoType() && 2240d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith (T->castAs<FunctionProtoType>()->getTypeQuals() != 0 || 2241d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith T->castAs<FunctionProtoType>()->getRefQualifier() != RQ_None); 2242d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 224398eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump // Walk the DeclTypeInfo, building the recursive type as we go. 224498eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump // DeclTypeInfos are ordered from the identifier out, which is 224598eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump // opposite of what we want :). 22468ce35b095e8fca45e04c1bda14ed0548ce7536adSebastian Redl for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 2247711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned chunkIndex = e - i - 1; 2248711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.setCurrentChunkIndex(chunkIndex); 2249711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &DeclType = D.getTypeObject(chunkIndex); 2250d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (IsQualifiedFunction) { 2251d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith checkQualifiedFunction(S, T, DeclType); 2252d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith IsQualifiedFunction = DeclType.Kind == DeclaratorChunk::Paren; 2253d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith } 22545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DeclType.Kind) { 2255075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara case DeclaratorChunk::Paren: 22568cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildParenType(T); 2257075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara break; 22585618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff case DeclaratorChunk::BlockPointer: 22599af5500f3f132f9a2f9abbe82113a7c7bb751472Chris Lattner // If blocks are disabled, emit an error. 22609af5500f3f132f9a2f9abbe82113a7c7bb751472Chris Lattner if (!LangOpts.Blocks) 22618cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Loc, diag::err_blocks_disable); 22621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 22638cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildBlockPointerType(T, D.getIdentifierLoc(), Name); 22642865474261a608c7873b87ba4af110d17907896dJohn McCall if (DeclType.Cls.TypeQuals) 22658cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, DeclType.Cls.TypeQuals); 22665618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff break; 22675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclaratorChunk::Pointer: 22686a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Verify that we're not building a pointer to pointer to function with 22696a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // exception specification. 22708cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.CPlusPlus && S.CheckDistantExceptionSpec(T)) { 22718cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getIdentifierLoc(), diag::err_distant_exception_spec); 22726a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl D.setInvalidType(true); 22736a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Build the type anyway. 22746a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl } 22758cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.ObjC1 && T->getAs<ObjCObjectType>()) { 2276c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall T = Context.getObjCObjectPointerType(T); 22772865474261a608c7873b87ba4af110d17907896dJohn McCall if (DeclType.Ptr.TypeQuals) 22788cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, DeclType.Ptr.TypeQuals); 227914108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff break; 228014108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 22818cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildPointerType(T, DeclType.Loc, Name); 22822865474261a608c7873b87ba4af110d17907896dJohn McCall if (DeclType.Ptr.TypeQuals) 22838cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, DeclType.Ptr.TypeQuals); 2284711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 22855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 22860953e767ff7817f97b3ab20896b229891eeff45bJohn McCall case DeclaratorChunk::Reference: { 22876a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Verify that we're not building a reference to pointer to function with 22886a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // exception specification. 22898cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.CPlusPlus && S.CheckDistantExceptionSpec(T)) { 22908cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getIdentifierLoc(), diag::err_distant_exception_spec); 22916a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl D.setInvalidType(true); 22926a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Build the type anyway. 22936a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl } 22948cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildReferenceType(T, DeclType.Ref.LValueRef, DeclType.Loc, Name); 22952865474261a608c7873b87ba4af110d17907896dJohn McCall 22962865474261a608c7873b87ba4af110d17907896dJohn McCall Qualifiers Quals; 22972865474261a608c7873b87ba4af110d17907896dJohn McCall if (DeclType.Ref.HasRestrict) 22988cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, Qualifiers::Restrict); 22995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 23000953e767ff7817f97b3ab20896b229891eeff45bJohn McCall } 23015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclaratorChunk::Array: { 23026a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Verify that we're not building an array of pointers to function with 23036a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // exception specification. 23048cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.CPlusPlus && S.CheckDistantExceptionSpec(T)) { 23058cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getIdentifierLoc(), diag::err_distant_exception_spec); 23066a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl D.setInvalidType(true); 23076a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Build the type anyway. 23086a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl } 2309fd89bc825026e44c68a68db72d4012fd6752e70fChris Lattner DeclaratorChunk::ArrayTypeInfo &ATI = DeclType.Arr; 231094f81fd0b0f81a99d215b225c8c5616295b063f6Chris Lattner Expr *ArraySize = static_cast<Expr*>(ATI.NumElts); 23115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ArrayType::ArraySizeModifier ASM; 23125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (ATI.isStar) 23135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ASM = ArrayType::Star; 23145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else if (ATI.hasStatic) 23155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ASM = ArrayType::Static; 23165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 23175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ASM = ArrayType::Normal; 2318c05a94b7accd4035bf5d5897c434c445b22da855John McCall if (ASM == ArrayType::Star && !D.isPrototypeContext()) { 2319f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman // FIXME: This check isn't quite right: it allows star in prototypes 2320f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman // for function definitions, and disallows some edge cases detailed 2321f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman // in http://gcc.gnu.org/ml/gcc-patches/2009-02/msg00133.html 23228cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Loc, diag::err_array_star_outside_prototype); 2323f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman ASM = ArrayType::Normal; 2324f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman D.setInvalidType(true); 2325f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman } 23267f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg 23277f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // C99 6.7.5.2p1: The optional type qualifiers and the keyword static 23287f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // shall appear only in a declaration of a function parameter with an 23297f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // array type, ... 23307f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg if (ASM == ArrayType::Static || ATI.TypeQuals) { 233199570a58b09fca5d0b328733ab8b6717a1a04f4aMatt Beaumont-Gay if (!(D.isPrototypeContext() || 233299570a58b09fca5d0b328733ab8b6717a1a04f4aMatt Beaumont-Gay D.getContext() == Declarator::KNRTypeListContext)) { 23337f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg S.Diag(DeclType.Loc, diag::err_array_static_outside_prototype) << 23347f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg (ASM == ArrayType::Static ? "'static'" : "type qualifier"); 23357f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // Remove the 'static' and the type qualifiers. 23367f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg if (ASM == ArrayType::Static) 23377f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg ASM = ArrayType::Normal; 23387f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg ATI.TypeQuals = 0; 23397f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg D.setInvalidType(true); 23407f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg } 23417f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg 23427f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // C99 6.7.5.2p1: ... and then only in the outermost array type 23437f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // derivation. 23447f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg unsigned x = chunkIndex; 23457f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg while (x != 0) { 23467f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // Walk outwards along the declarator chunks. 23477f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg x--; 23487f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg const DeclaratorChunk &DC = D.getTypeObject(x); 23497f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg switch (DC.Kind) { 23507f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Paren: 23517f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg continue; 23527f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Array: 23537f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Pointer: 23547f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Reference: 23557f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::MemberPointer: 23567f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg S.Diag(DeclType.Loc, diag::err_array_static_not_outermost) << 23577f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg (ASM == ArrayType::Static ? "'static'" : "type qualifier"); 23587f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg if (ASM == ArrayType::Static) 23597f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg ASM = ArrayType::Normal; 23607f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg ATI.TypeQuals = 0; 23617f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg D.setInvalidType(true); 23627f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg break; 23637f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Function: 23647f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::BlockPointer: 23657f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // These are invalid anyway, so just ignore. 23667f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg break; 23677f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg } 23687f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg } 23697f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg } 23707f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg 23718ac2c66a1442985091c5ec2b33ce6d3df3bcb529Eli Friedman T = S.BuildArrayType(T, ASM, ArraySize, ATI.TypeQuals, 23728cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis SourceRange(DeclType.Loc, DeclType.EndLoc), Name); 23735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 23745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2375f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl case DeclaratorChunk::Function: { 23765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If the function declarator has a prototype (i.e. it is not () and 23775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // does not have a K&R-style identifier list), then the arguments are part 23785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // of the type, otherwise the argument list is (). 23795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DeclaratorChunk::FunctionTypeInfo &FTI = DeclType.Fun; 2380d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith IsQualifiedFunction = FTI.TypeQuals || FTI.hasRefQualifier(); 23813cc9726a493d90bd8faf094986a59352fd3461cbSebastian Redl 238234b41d939a1328f484511c6002ba2456db879a29Richard Smith // Check for auto functions and trailing return type and adjust the 238334b41d939a1328f484511c6002ba2456db879a29Richard Smith // return type accordingly. 238434b41d939a1328f484511c6002ba2456db879a29Richard Smith if (!D.isInvalidType()) { 238534b41d939a1328f484511c6002ba2456db879a29Richard Smith // trailing-return-type is only required if we're declaring a function, 238634b41d939a1328f484511c6002ba2456db879a29Richard Smith // and not, for instance, a pointer to a function. 238734b41d939a1328f484511c6002ba2456db879a29Richard Smith if (D.getDeclSpec().getTypeSpecType() == DeclSpec::TST_auto && 238854655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith !FTI.hasTrailingReturnType() && chunkIndex == 0) { 23898cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getDeclSpec().getTypeSpecTypeLoc(), 239034b41d939a1328f484511c6002ba2456db879a29Richard Smith diag::err_auto_missing_trailing_return); 239134b41d939a1328f484511c6002ba2456db879a29Richard Smith T = Context.IntTy; 239234b41d939a1328f484511c6002ba2456db879a29Richard Smith D.setInvalidType(true); 239354655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith } else if (FTI.hasTrailingReturnType()) { 2394e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // T must be exactly 'auto' at this point. See CWG issue 681. 2395e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith if (isa<ParenType>(T)) { 23968cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getDeclSpec().getTypeSpecTypeLoc(), 2397e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith diag::err_trailing_return_in_parens) 2398e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith << T << D.getDeclSpec().getSourceRange(); 2399e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith D.setInvalidType(true); 2400f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman } else if (D.getContext() != Declarator::LambdaExprContext && 2401f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman (T.hasQualifiers() || !isa<AutoType>(T))) { 24028cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getDeclSpec().getTypeSpecTypeLoc(), 240334b41d939a1328f484511c6002ba2456db879a29Richard Smith diag::err_trailing_return_without_auto) 240434b41d939a1328f484511c6002ba2456db879a29Richard Smith << T << D.getDeclSpec().getSourceRange(); 240534b41d939a1328f484511c6002ba2456db879a29Richard Smith D.setInvalidType(true); 240634b41d939a1328f484511c6002ba2456db879a29Richard Smith } 240754655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith T = S.GetTypeFromParser(FTI.getTrailingReturnType(), &TInfo); 240854655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith if (T.isNull()) { 240954655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith // An error occurred parsing the trailing return type. 241054655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith T = Context.IntTy; 241154655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith D.setInvalidType(true); 241254655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith } 241334b41d939a1328f484511c6002ba2456db879a29Richard Smith } 241434b41d939a1328f484511c6002ba2456db879a29Richard Smith } 241534b41d939a1328f484511c6002ba2456db879a29Richard Smith 2416e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // C99 6.7.5.3p1: The return type may not be a function or array type. 2417e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // For conversion functions, we'll diagnose this particular error later. 2418e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith if ((T->isArrayType() || T->isFunctionType()) && 2419e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith (D.getName().getKind() != UnqualifiedId::IK_ConversionFunctionId)) { 2420e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith unsigned diagID = diag::err_func_returning_array_function; 2421e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // Last processing chunk in block context means this function chunk 2422e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // represents the block. 2423e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith if (chunkIndex == 0 && 2424e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith D.getContext() == Declarator::BlockLiteralContext) 2425e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith diagID = diag::err_block_returning_array_function; 24268cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Loc, diagID) << T->isFunctionType() << T; 2427e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith T = Context.IntTy; 2428e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith D.setInvalidType(true); 2429e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 2430e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith 2431aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // Do not allow returning half FP value. 2432aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // FIXME: This really should be in BuildFunctionType. 2433aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov if (T->isHalfType()) { 2434aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov S.Diag(D.getIdentifierLoc(), 2435aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov diag::err_parameters_retval_cannot_have_fp16_type) << 1 2436aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov << FixItHint::CreateInsertion(D.getIdentifierLoc(), "*"); 2437aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov D.setInvalidType(true); 2438aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov } 2439aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov 24405291c3cec0dbe8ad1d8e7e67e93af2b1586d5400Douglas Gregor // cv-qualifiers on return types are pointless except when the type is a 24415291c3cec0dbe8ad1d8e7e67e93af2b1586d5400Douglas Gregor // class type in C++. 2442fff951371dfc309160a99d423e43a7841aeb35aaDouglas Gregor if (isa<PointerType>(T) && T.getLocalCVRQualifiers() && 24431e15394853bfae25112d9cc6b445504905e1f34aRafael Espindola (D.getName().getKind() != UnqualifiedId::IK_ConversionFunctionId) && 24448cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis (!LangOpts.CPlusPlus || !T->isDependentType())) { 2445d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth assert(chunkIndex + 1 < e && "No DeclaratorChunk for the return type?"); 2446d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth DeclaratorChunk ReturnTypeChunk = D.getTypeObject(chunkIndex + 1); 2447d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth assert(ReturnTypeChunk.Kind == DeclaratorChunk::Pointer); 2448d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 2449d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth DeclaratorChunk::PointerTypeInfo &PTI = ReturnTypeChunk.Ptr; 2450d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 2451d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth DiagnoseIgnoredQualifiers(PTI.TypeQuals, 2452d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth SourceLocation::getFromRawEncoding(PTI.ConstQualLoc), 2453d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth SourceLocation::getFromRawEncoding(PTI.VolatileQualLoc), 2454d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth SourceLocation::getFromRawEncoding(PTI.RestrictQualLoc), 24558cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S); 2456d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 2457d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth } else if (T.getCVRQualifiers() && D.getDeclSpec().getTypeQualifiers() && 24588cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis (!LangOpts.CPlusPlus || 24595291c3cec0dbe8ad1d8e7e67e93af2b1586d5400Douglas Gregor (!T->isDependentType() && !T->isRecordType()))) { 2460d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 2461d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth DiagnoseIgnoredQualifiers(D.getDeclSpec().getTypeQualifiers(), 2462d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth D.getDeclSpec().getConstSpecLoc(), 2463d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth D.getDeclSpec().getVolatileSpecLoc(), 2464d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth D.getDeclSpec().getRestrictSpecLoc(), 24658cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S); 24665291c3cec0dbe8ad1d8e7e67e93af2b1586d5400Douglas Gregor } 2467d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 24688cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.CPlusPlus && D.getDeclSpec().isTypeSpecOwned()) { 2469402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor // C++ [dcl.fct]p6: 2470402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor // Types shall not be defined in return or parameter types. 2471b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall TagDecl *Tag = cast<TagDecl>(D.getDeclSpec().getRepAsDecl()); 24725e1cdac63c3d9c9b32fa41fa0b2d242a58a20d49John McCall if (Tag->isCompleteDefinition()) 24738cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(Tag->getLocation(), diag::err_type_defined_in_result_type) 2474402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor << Context.getTypeDeclType(Tag); 2475402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor } 2476402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor 24773cc9726a493d90bd8faf094986a59352fd3461cbSebastian Redl // Exception specs are not allowed in typedefs. Complain, but add it 24783cc9726a493d90bd8faf094986a59352fd3461cbSebastian Redl // anyway. 2479162e1c1b487352434552147967c3dd296ebee2f7Richard Smith if (IsTypedefName && FTI.getExceptionSpecType()) 24808cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(FTI.getExceptionSpecLoc(), diag::err_exception_spec_in_typedef) 24813e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith << (D.getContext() == Declarator::AliasDeclContext || 24823e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith D.getContext() == Declarator::AliasTemplateContext); 24833cc9726a493d90bd8faf094986a59352fd3461cbSebastian Redl 2484b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // If we see "T var();" or "T var(T());" at block scope, it is probably 2485b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // an attempt to initialize a variable, not a function declaration. 2486b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (FTI.isAmbiguous) 2487b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith warnAboutAmbiguousFunction(S, D, DeclType, T); 2488b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 24898cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (!FTI.NumArgs && !FTI.isVariadic && !LangOpts.CPlusPlus) { 24902865474261a608c7873b87ba4af110d17907896dJohn McCall // Simple void foo(), where the incoming T is the result type. 24912865474261a608c7873b87ba4af110d17907896dJohn McCall T = Context.getFunctionNoProtoType(T); 24922865474261a608c7873b87ba4af110d17907896dJohn McCall } else { 24932865474261a608c7873b87ba4af110d17907896dJohn McCall // We allow a zero-parameter variadic function in C if the 24942865474261a608c7873b87ba4af110d17907896dJohn McCall // function is marked with the "overloadable" attribute. Scan 24952865474261a608c7873b87ba4af110d17907896dJohn McCall // for this attribute now. 24968cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (!FTI.NumArgs && FTI.isVariadic && !LangOpts.CPlusPlus) { 2497965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor bool Overloadable = false; 2498965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor for (const AttributeList *Attrs = D.getAttributes(); 2499965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor Attrs; Attrs = Attrs->getNext()) { 25008e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (Attrs->getKind() == AttributeList::AT_Overloadable) { 2501965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor Overloadable = true; 2502965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor break; 2503965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor } 2504965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor } 2505965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor 2506965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor if (!Overloadable) 25078cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(FTI.getEllipsisLoc(), diag::err_ellipsis_first_arg); 2508c6f7345e44e079f373d6bdecaa06c7e06574dc27Argyrios Kyrtzidis } 25092865474261a608c7873b87ba4af110d17907896dJohn McCall 25102865474261a608c7873b87ba4af110d17907896dJohn McCall if (FTI.NumArgs && FTI.ArgInfo[0].Param == 0) { 2511788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner // C99 6.7.5.3p3: Reject int(x,y,z) when it's not a function 2512788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner // definition. 25138cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(FTI.ArgInfo[0].IdentLoc, diag::err_ident_list_in_fn_declaration); 25142865474261a608c7873b87ba4af110d17907896dJohn McCall D.setInvalidType(true); 25152865474261a608c7873b87ba4af110d17907896dJohn McCall break; 25162865474261a608c7873b87ba4af110d17907896dJohn McCall } 25172865474261a608c7873b87ba4af110d17907896dJohn McCall 2518e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall FunctionProtoType::ExtProtoInfo EPI; 2519e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI.Variadic = FTI.isVariadic; 252054655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith EPI.HasTrailingReturn = FTI.hasTrailingReturnType(); 2521e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI.TypeQuals = FTI.TypeQuals; 2522c938c1668b4fd12af154e965dd935a89e4801a70Douglas Gregor EPI.RefQualifier = !FTI.hasRefQualifier()? RQ_None 2523c938c1668b4fd12af154e965dd935a89e4801a70Douglas Gregor : FTI.RefQualifierIsLValueRef? RQ_LValue 2524c938c1668b4fd12af154e965dd935a89e4801a70Douglas Gregor : RQ_RValue; 252591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 25265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, we have a function with an argument list that is 25275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // potentially variadic. 25285f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<QualType, 16> ArgTys; 25292865474261a608c7873b87ba4af110d17907896dJohn McCall ArgTys.reserve(FTI.NumArgs); 25301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 25315f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<bool, 16> ConsumedArguments; 2532f85e193739c953358c865005855253af4f68a497John McCall ConsumedArguments.reserve(FTI.NumArgs); 2533f85e193739c953358c865005855253af4f68a497John McCall bool HasAnyConsumedArguments = false; 2534f85e193739c953358c865005855253af4f68a497John McCall 25355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0, e = FTI.NumArgs; i != e; ++i) { 2536d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall ParmVarDecl *Param = cast<ParmVarDecl>(FTI.ArgInfo[i].Param); 25378123a95c33b792d35c2e4992ba6e27882748fb0dChris Lattner QualType ArgTy = Param->getType(); 253878c75fb3d275079c5fab30eeb33077958f2b0265Chris Lattner assert(!ArgTy.isNull() && "Couldn't parse type?"); 25392dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor 25402dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor // Adjust the parameter type. 254191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier assert((ArgTy == Context.getAdjustedParameterType(ArgTy)) && 254279e6bd379773447a74cc3e579d9081e4c5cb6d63Douglas Gregor "Unadjusted type?"); 25432dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor 25445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Look for 'void'. void is allowed only as a single argument to a 25455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // function with no other parameters (C99 6.7.5.3p10). We record 254672564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor // int(void) as a FunctionProtoType with an empty argument list. 25472dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor if (ArgTy->isVoidType()) { 25485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is something like 'float(int, void)', reject it. 'void' 25495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // is an incomplete type (C99 6.2.5p19) and function decls cannot 25505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // have arguments of incomplete type. 25515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (FTI.NumArgs != 1 || FTI.isVariadic) { 25528cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Loc, diag::err_void_only_param); 25532ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner ArgTy = Context.IntTy; 25548123a95c33b792d35c2e4992ba6e27882748fb0dChris Lattner Param->setType(ArgTy); 25552ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner } else if (FTI.ArgInfo[i].Ident) { 25562ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner // Reject, but continue to parse 'int(void abc)'. 25578cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(FTI.ArgInfo[i].IdentLoc, 25584565d4e83cec55356fe9c75929579eacced9da36Chris Lattner diag::err_param_with_void_type); 25592ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner ArgTy = Context.IntTy; 25608123a95c33b792d35c2e4992ba6e27882748fb0dChris Lattner Param->setType(ArgTy); 25612ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner } else { 25622ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner // Reject, but continue to parse 'float(const void)'. 25630953e767ff7817f97b3ab20896b229891eeff45bJohn McCall if (ArgTy.hasQualifiers()) 25648cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Loc, diag::err_void_param_qualified); 25651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 25662ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner // Do not add 'void' to the ArgTys list. 25672ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner break; 25682ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner } 2569aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov } else if (ArgTy->isHalfType()) { 2570aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // Disallow half FP arguments. 2571aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // FIXME: This really should be in BuildFunctionType. 2572aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov S.Diag(Param->getLocation(), 2573aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov diag::err_parameters_retval_cannot_have_fp16_type) << 0 2574aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov << FixItHint::CreateInsertion(Param->getLocation(), "*"); 2575aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov D.setInvalidType(); 2576eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman } else if (!FTI.hasPrototype) { 2577eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman if (ArgTy->isPromotableIntegerType()) { 2578a95d75769edae299816ec7fd9bbcdf1ef617c5c9Eli Friedman ArgTy = Context.getPromotedIntegerType(ArgTy); 2579eecf5fa12d5426637c47d7072f0c193a8d7ff68bJohn McCall Param->setKNRPromoted(true); 2580183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall } else if (const BuiltinType* BTy = ArgTy->getAs<BuiltinType>()) { 2581eecf5fa12d5426637c47d7072f0c193a8d7ff68bJohn McCall if (BTy->getKind() == BuiltinType::Float) { 2582eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman ArgTy = Context.DoubleTy; 2583eecf5fa12d5426637c47d7072f0c193a8d7ff68bJohn McCall Param->setKNRPromoted(true); 2584eecf5fa12d5426637c47d7072f0c193a8d7ff68bJohn McCall } 2585eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman } 25865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 258756a965c0f77c9e6bffd65cc8f8796442a8527381Fariborz Jahanian 25888cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.ObjCAutoRefCount) { 2589f85e193739c953358c865005855253af4f68a497John McCall bool Consumed = Param->hasAttr<NSConsumedAttr>(); 2590f85e193739c953358c865005855253af4f68a497John McCall ConsumedArguments.push_back(Consumed); 2591f85e193739c953358c865005855253af4f68a497John McCall HasAnyConsumedArguments |= Consumed; 2592f85e193739c953358c865005855253af4f68a497John McCall } 2593f85e193739c953358c865005855253af4f68a497John McCall 259454e14c4db764c0636160d26c5bbf491637c83a76John McCall ArgTys.push_back(ArgTy); 25955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2596465226e23a3008bd68973513dda1f9e3cd27dbddSebastian Redl 2597f85e193739c953358c865005855253af4f68a497John McCall if (HasAnyConsumedArguments) 2598f85e193739c953358c865005855253af4f68a497John McCall EPI.ConsumedArguments = ConsumedArguments.data(); 2599f85e193739c953358c865005855253af4f68a497John McCall 26005f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<QualType, 4> Exceptions; 260174e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor SmallVector<ParsedType, 2> DynamicExceptions; 260274e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor SmallVector<SourceRange, 2> DynamicExceptionRanges; 260374e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor Expr *NoexceptExpr = 0; 260491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 26058b5b4099c61a136e9a1714c4d8a593febe942268Sebastian Redl if (FTI.getExceptionSpecType() == EST_Dynamic) { 260674e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor // FIXME: It's rather inefficient to have to split into two vectors 260774e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor // here. 260874e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor unsigned N = FTI.NumExceptions; 260974e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptions.reserve(N); 261074e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptionRanges.reserve(N); 261174e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor for (unsigned I = 0; I != N; ++I) { 261274e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptions.push_back(FTI.Exceptions[I].Ty); 261374e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptionRanges.push_back(FTI.Exceptions[I].Range); 2614e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall } 26158b5b4099c61a136e9a1714c4d8a593febe942268Sebastian Redl } else if (FTI.getExceptionSpecType() == EST_ComputedNoexcept) { 261674e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor NoexceptExpr = FTI.NoexceptExpr; 261774e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor } 261891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 261974e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor S.checkExceptionSpecification(FTI.getExceptionSpecType(), 262074e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptions, 262174e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptionRanges, 262274e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor NoexceptExpr, 262374e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor Exceptions, 262474e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor EPI); 262591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 2626e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall T = Context.getFunctionType(T, ArgTys.data(), ArgTys.size(), EPI); 26275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 262804a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 26295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 26305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2631f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl case DeclaratorChunk::MemberPointer: 2632f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl // The scope spec must refer to a class, or be dependent. 26337bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara CXXScopeSpec &SS = DeclType.Mem.Scope(); 2634f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl QualType ClsType; 26357bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara if (SS.isInvalid()) { 2636edc287751a4b05e3b4d8ff2b38fa30c5b59a548bJeffrey Yasskin // Avoid emitting extra errors if we already errored on the scope. 2637edc287751a4b05e3b4d8ff2b38fa30c5b59a548bJeffrey Yasskin D.setInvalidType(true); 26388cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis } else if (S.isDependentScopeSpecifier(SS) || 26398cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis dyn_cast_or_null<CXXRecordDecl>(S.computeDeclContext(SS))) { 26401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NestedNameSpecifier *NNS 26417bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara = static_cast<NestedNameSpecifier*>(SS.getScopeRep()); 264287c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor NestedNameSpecifier *NNSPrefix = NNS->getPrefix(); 264387c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor switch (NNS->getKind()) { 264487c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::Identifier: 26457bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara ClsType = Context.getDependentNameType(ETK_None, NNSPrefix, 26464a2023f5014e82389d5980d307b89c545dbbac81Douglas Gregor NNS->getAsIdentifier()); 264787c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor break; 264887c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor 264987c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::Namespace: 265014aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor case NestedNameSpecifier::NamespaceAlias: 265187c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::Global: 26529f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Nested-name-specifier must name a type"); 26537bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara 265487c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::TypeSpec: 265587c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::TypeSpecWithTemplate: 265687c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor ClsType = QualType(NNS->getAsType(), 0); 265791ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // Note: if the NNS has a prefix and ClsType is a nondependent 265891ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // TemplateSpecializationType, then the NNS prefix is NOT included 265991ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // in ClsType; hence we wrap ClsType into an ElaboratedType. 266091ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // NOTE: in particular, no wrap occurs if ClsType already is an 266191ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // Elaborated, DependentName, or DependentTemplateSpecialization. 266291ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara if (NNSPrefix && isa<TemplateSpecializationType>(NNS->getAsType())) 26637bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara ClsType = Context.getElaboratedType(ETK_None, NNSPrefix, ClsType); 266487c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor break; 266587c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor } 2666f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } else { 26678cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Mem.Scope().getBeginLoc(), 2668949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor diag::err_illegal_decl_mempointer_in_nonclass) 2669949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor << (D.getIdentifier() ? D.getIdentifier()->getName() : "type name") 2670949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor << DeclType.Mem.Scope().getRange(); 2671f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl D.setInvalidType(true); 2672f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 2673f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl 2674949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (!ClsType.isNull()) 26758cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildMemberPointerType(T, ClsType, DeclType.Loc, D.getIdentifier()); 2676949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (T.isNull()) { 2677f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl T = Context.IntTy; 2678949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor D.setInvalidType(true); 26792865474261a608c7873b87ba4af110d17907896dJohn McCall } else if (DeclType.Mem.TypeQuals) { 26808cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, DeclType.Mem.TypeQuals); 2681f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 2682f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl break; 2683f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 2684f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl 2685cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T.isNull()) { 2686cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor D.setInvalidType(true); 2687cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor T = Context.IntTy; 2688cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 2689cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 2690c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // See if there are any attributes on this declarator chunk. 2691711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (AttributeList *attrs = const_cast<AttributeList*>(DeclType.getAttrs())) 2692f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith processTypeAttrs(state, T, TAL_DeclChunk, attrs); 26935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2694971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis 26958cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.CPlusPlus && T->isFunctionType()) { 2696183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall const FunctionProtoType *FnTy = T->getAs<FunctionProtoType>(); 2697778ed741de8ada0049b89608af0abdb5ae6e106eChris Lattner assert(FnTy && "Why oh why is there not a FunctionProtoType here?"); 2698971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis 269991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // C++ 8.3.5p4: 2700708f3b8e350a5c0605889a4f32b26686864495caDouglas Gregor // A cv-qualifier-seq shall only be part of the function type 2701708f3b8e350a5c0605889a4f32b26686864495caDouglas Gregor // for a nonstatic member function, the function type to which a pointer 2702708f3b8e350a5c0605889a4f32b26686864495caDouglas Gregor // to member refers, or the top-level function type of a function typedef 2703708f3b8e350a5c0605889a4f32b26686864495caDouglas Gregor // declaration. 2704683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor // 2705683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor // Core issue 547 also allows cv-qualifiers on function types that are 2706683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor // top-level template type arguments. 2707613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall bool FreeFunction; 2708613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall if (!D.getCXXScopeSpec().isSet()) { 2709906a7e1c0f272f7e539c82dda01f4644031ce637Eli Friedman FreeFunction = ((D.getContext() != Declarator::MemberContext && 2710906a7e1c0f272f7e539c82dda01f4644031ce637Eli Friedman D.getContext() != Declarator::LambdaExprContext) || 2711613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall D.getDeclSpec().isFriendSpecified()); 2712613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall } else { 27138cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis DeclContext *DC = S.computeDeclContext(D.getCXXScopeSpec()); 2714613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall FreeFunction = (DC && !DC->isRecord()); 2715613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall } 2716613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall 2717d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // C++11 [dcl.fct]p6 (w/DR1417): 2718d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // An attempt to specify a function type with a cv-qualifier-seq or a 2719d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // ref-qualifier (including by typedef-name) is ill-formed unless it is: 2720d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the function type for a non-static member function, 2721d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the function type to which a pointer to member refers, 2722d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the top-level function type of a function typedef declaration or 2723d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // alias-declaration, 2724d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the type-id in the default argument of a type-parameter, or 2725d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the type-id of a template-argument for a type-parameter 2726d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (IsQualifiedFunction && 2727d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith !(!FreeFunction && 2728d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith D.getDeclSpec().getStorageClassSpec() != DeclSpec::SCS_static) && 2729d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith !IsTypedefName && 2730d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith D.getContext() != Declarator::TemplateTypeArgContext) { 273196a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceLocation Loc = D.getLocStart(); 2732d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith SourceRange RemovalRange; 2733d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith unsigned I; 2734d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (D.isFunctionDeclarator(I)) { 2735d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith SmallVector<SourceLocation, 4> RemovalLocs; 2736d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith const DeclaratorChunk &Chunk = D.getTypeObject(I); 2737d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith assert(Chunk.Kind == DeclaratorChunk::Function); 2738d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (Chunk.Fun.hasRefQualifier()) 2739d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith RemovalLocs.push_back(Chunk.Fun.getRefQualifierLoc()); 2740d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (Chunk.Fun.TypeQuals & Qualifiers::Const) 2741d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith RemovalLocs.push_back(Chunk.Fun.getConstQualifierLoc()); 2742d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (Chunk.Fun.TypeQuals & Qualifiers::Volatile) 2743d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith RemovalLocs.push_back(Chunk.Fun.getVolatileQualifierLoc()); 2744d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // FIXME: We do not track the location of the __restrict qualifier. 2745d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith //if (Chunk.Fun.TypeQuals & Qualifiers::Restrict) 2746d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // RemovalLocs.push_back(Chunk.Fun.getRestrictQualifierLoc()); 2747d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (!RemovalLocs.empty()) { 2748d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith std::sort(RemovalLocs.begin(), RemovalLocs.end(), 2749aa0cd85838f2a024e589ea4e8c2094130065af21Dmitri Gribenko BeforeThanCompare<SourceLocation>(S.getSourceManager())); 2750d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith RemovalRange = SourceRange(RemovalLocs.front(), RemovalLocs.back()); 2751d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith Loc = RemovalLocs.front(); 2752683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor } 2753683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor } 2754d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2755d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith S.Diag(Loc, diag::err_invalid_qualified_function_type) 2756d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith << FreeFunction << D.isFunctionDeclarator() << T 2757d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith << getFunctionQualifiersAsString(FnTy) 2758d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith << FixItHint::CreateRemoval(RemovalRange); 2759d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2760d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // Strip the cv-qualifiers and ref-qualifiers from the type. 2761d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith FunctionProtoType::ExtProtoInfo EPI = FnTy->getExtProtoInfo(); 2762d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith EPI.TypeQuals = 0; 2763d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith EPI.RefQualifier = RQ_None; 2764d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 276591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier T = Context.getFunctionType(FnTy->getResultType(), 2766d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith FnTy->arg_type_begin(), 2767d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith FnTy->getNumArgs(), EPI); 2768e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith // Rebuild any parens around the identifier in the function type. 2769e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 2770e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith if (D.getTypeObject(i).Kind != DeclaratorChunk::Paren) 2771e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith break; 2772e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith T = S.BuildParenType(T); 2773e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith } 2774971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis } 2775971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis } 27761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2777711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Apply any undistributed attributes from the declarator. 2778711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!T.isNull()) 2779711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (AttributeList *attrs = D.getAttributes()) 2780f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith processTypeAttrs(state, T, TAL_DeclName, attrs); 2781711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 2782711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Diagnose any ignored type attributes. 2783711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!T.isNull()) state.diagnoseIgnoredTypeAttrs(T); 2784711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 2785148f1f7936afd718bac7be95089e77673e43f16fPeter Collingbourne // C++0x [dcl.constexpr]p9: 2786148f1f7936afd718bac7be95089e77673e43f16fPeter Collingbourne // A constexpr specifier used in an object declaration declares the object 278791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // as const. 2788148f1f7936afd718bac7be95089e77673e43f16fPeter Collingbourne if (D.getDeclSpec().isConstexprSpecified() && T->isObjectType()) { 2789737801257f795632175517ffce4a80c62fc7bff7Sebastian Redl T.addConst(); 2790737801257f795632175517ffce4a80c62fc7bff7Sebastian Redl } 2791737801257f795632175517ffce4a80c62fc7bff7Sebastian Redl 279291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // If there was an ellipsis in the declarator, the declaration declares a 2793a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // parameter pack whose type may be a pack expansion type. 2794a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor if (D.hasEllipsis() && !T.isNull()) { 2795a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // C++0x [dcl.fct]p13: 279691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // A declarator-id or abstract-declarator containing an ellipsis shall 2797a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // only be used in a parameter-declaration. Such a parameter-declaration 2798a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // is a parameter pack (14.5.3). [...] 2799a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor switch (D.getContext()) { 2800a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::PrototypeContext: 2801a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // C++0x [dcl.fct]p13: 280291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // [...] When it is part of a parameter-declaration-clause, the 280391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // parameter pack is a function parameter pack (14.5.3). The type T 2804a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // of the declarator-id of the function parameter pack shall contain 280591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // a template parameter pack; each template parameter pack in T is 2806a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // expanded by the function parameter pack. 2807a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // 2808a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // We represent function parameter packs as function parameters whose 2809a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // type is a pack expansion. 2810a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor if (!T->containsUnexpandedParameterPack()) { 281191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier S.Diag(D.getEllipsisLoc(), 2812a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor diag::err_function_parameter_pack_without_parameter_packs) 2813a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor << T << D.getSourceRange(); 2814a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor D.setEllipsisLoc(SourceLocation()); 2815a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } else { 2816cded4f649cd4b7ba7d461c25c6482ef52b8d3a2aDouglas Gregor T = Context.getPackExpansionType(T, llvm::Optional<unsigned>()); 2817a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } 2818a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor break; 281991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 2820a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::TemplateParamContext: 2821a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // C++0x [temp.param]p15: 282291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // If a template-parameter is a [...] is a parameter-declaration that 2823a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // declares a parameter pack (8.3.5), then the template-parameter is a 2824a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // template parameter pack (14.5.3). 2825a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // 2826a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // Note: core issue 778 clarifies that, if there are any unexpanded 2827a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // parameter packs in the type of the non-type template parameter, then 2828a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // it expands those parameter packs. 2829a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor if (T->containsUnexpandedParameterPack()) 2830cded4f649cd4b7ba7d461c25c6482ef52b8d3a2aDouglas Gregor T = Context.getPackExpansionType(T, llvm::Optional<unsigned>()); 2831e5acd13f885ac95d0f2dafda245625b8190235acRichard Smith else 2832e5acd13f885ac95d0f2dafda245625b8190235acRichard Smith S.Diag(D.getEllipsisLoc(), 283380ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith LangOpts.CPlusPlus11 2834e5acd13f885ac95d0f2dafda245625b8190235acRichard Smith ? diag::warn_cxx98_compat_variadic_templates 2835e5acd13f885ac95d0f2dafda245625b8190235acRichard Smith : diag::ext_variadic_templates); 2836a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor break; 283791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 2838a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::FileContext: 2839a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::KNRTypeListContext: 2840cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCParameterContext: // FIXME: special diagnostic here? 2841cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCResultContext: // FIXME: special diagnostic here? 2842a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::TypeNameContext: 28430b8c98f3ddf83adcb9e9d98b68ce38e970cdee73Argyrios Kyrtzidis case Declarator::CXXNewContext: 2844162e1c1b487352434552147967c3dd296ebee2f7Richard Smith case Declarator::AliasDeclContext: 28453e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith case Declarator::AliasTemplateContext: 2846a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::MemberContext: 2847a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::BlockContext: 2848a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::ForContext: 2849a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::ConditionContext: 2850a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::CXXCatchContext: 285117b6399f8461c5b7e1c6f367b0a0dde49f921240Argyrios Kyrtzidis case Declarator::ObjCCatchContext: 2852a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::BlockLiteralContext: 2853f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman case Declarator::LambdaExprContext: 28547796eb5643244f3134834253ce5ea89107ac21c1Richard Smith case Declarator::TrailingReturnContext: 2855683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor case Declarator::TemplateTypeArgContext: 2856a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // FIXME: We may want to allow parameter packs in block-literal contexts 2857a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // in the future. 28588cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getEllipsisLoc(), diag::err_ellipsis_in_declarator_not_parameter); 2859a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor D.setEllipsisLoc(SourceLocation()); 2860a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor break; 2861a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } 2862a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } 2863e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith 2864bf1a028246d884a540aeafa38e89be59a269b072John McCall if (T.isNull()) 2865bf1a028246d884a540aeafa38e89be59a269b072John McCall return Context.getNullTypeSourceInfo(); 2866bf1a028246d884a540aeafa38e89be59a269b072John McCall else if (D.isInvalidType()) 2867bf1a028246d884a540aeafa38e89be59a269b072John McCall return Context.getTrivialTypeSourceInfo(T); 2868db7abf78dedc2ef6ccb42b3dac6ab330fe2ea469Argyrios Kyrtzidis 28698cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis return S.GetTypeSourceInfoForDeclarator(D, T, TInfo); 28708cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis} 28718cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 28728cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// GetTypeForDeclarator - Convert the type for the specified 28738cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// declarator to Type instances. 28748cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// 28758cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// The result of this call will never be null, but the associated 28768cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// type may be a null type if there's an unrecoverable error. 28778cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios KyrtzidisTypeSourceInfo *Sema::GetTypeForDeclarator(Declarator &D, Scope *S) { 28788cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // Determine the type of the declarator. Not all forms of declarator 28798cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // have a type. 28808cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 28818cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis TypeProcessingState state(*this, D); 28828cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 28838cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis TypeSourceInfo *ReturnTypeInfo = 0; 28848cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis QualType T = GetDeclSpecTypeForDeclarator(state, ReturnTypeInfo); 28858cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (T.isNull()) 28868cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis return Context.getNullTypeSourceInfo(); 28878cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 28884e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (D.isPrototypeContext() && getLangOpts().ObjCAutoRefCount) 28898cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis inferARCWriteback(state, T); 289091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 28918cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis return GetFullTypeForDeclarator(state, T, ReturnTypeInfo); 28925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 28935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 289431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidisstatic void transferARCOwnershipToDeclSpec(Sema &S, 289531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis QualType &declSpecTy, 289631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers::ObjCLifetime ownership) { 289731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (declSpecTy->isObjCRetainableType() && 289831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis declSpecTy.getObjCLifetime() == Qualifiers::OCL_None) { 289931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers qs; 290031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis qs.addObjCLifetime(ownership); 290131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis declSpecTy = S.Context.getQualifiedType(declSpecTy, qs); 290231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 290331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis} 290431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 290531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidisstatic void transferARCOwnershipToDeclaratorChunk(TypeProcessingState &state, 290631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers::ObjCLifetime ownership, 290731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis unsigned chunkIndex) { 290831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Sema &S = state.getSema(); 290931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Declarator &D = state.getDeclarator(); 291031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 291131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // Look for an explicit lifetime attribute. 291231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis DeclaratorChunk &chunk = D.getTypeObject(chunkIndex); 291331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis for (const AttributeList *attr = chunk.getAttrs(); attr; 291431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis attr = attr->getNext()) 29158e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr->getKind() == AttributeList::AT_ObjCOwnership) 291631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return; 291731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 291831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis const char *attrStr = 0; 291931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis switch (ownership) { 29203026348bd4c13a0f83b59839f64065e0fcbea253David Blaikie case Qualifiers::OCL_None: llvm_unreachable("no ownership!"); 292131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case Qualifiers::OCL_ExplicitNone: attrStr = "none"; break; 292231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case Qualifiers::OCL_Strong: attrStr = "strong"; break; 292331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case Qualifiers::OCL_Weak: attrStr = "weak"; break; 292431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case Qualifiers::OCL_Autoreleasing: attrStr = "autoreleasing"; break; 292531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 292631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 292731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // If there wasn't one, add one (with an invalid source location 292831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // so that we don't make an AttributedType for it). 292931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis AttributeList *attr = D.getAttributePool() 293031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis .create(&S.Context.Idents.get("objc_ownership"), SourceLocation(), 293131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis /*scope*/ 0, SourceLocation(), 293231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis &S.Context.Idents.get(attrStr), SourceLocation(), 293393f95f2a2cbb6bb3d17bfb5fc74ce1cccea751b6Sean Hunt /*args*/ 0, 0, AttributeList::AS_GNU); 293431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis spliceAttrIntoList(*attr, chunk.getAttrListRef()); 293531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 293631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // TODO: mark whether we did this inference? 293731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis} 293831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 293948d798ce32447607144db70a484cdb99c1180663Benjamin Kramer/// \brief Used for transferring ownership in casts resulting in l-values. 294031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidisstatic void transferARCOwnership(TypeProcessingState &state, 294131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis QualType &declSpecTy, 294231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers::ObjCLifetime ownership) { 294331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Sema &S = state.getSema(); 294431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Declarator &D = state.getDeclarator(); 294531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 294631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis int inner = -1; 29476ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis bool hasIndirection = false; 294831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 294931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis DeclaratorChunk &chunk = D.getTypeObject(i); 295031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis switch (chunk.Kind) { 295131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Paren: 295231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // Ignore parens. 295331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis break; 295431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 295531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Array: 295631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Reference: 295731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Pointer: 29586ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis if (inner != -1) 29596ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis hasIndirection = true; 296031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis inner = i; 296131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis break; 296231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 296331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::BlockPointer: 29646ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis if (inner != -1) 29656ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis transferARCOwnershipToDeclaratorChunk(state, ownership, i); 29666ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis return; 296731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 296831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Function: 296931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::MemberPointer: 297031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return; 297131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 297231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 297331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 297431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (inner == -1) 29756ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis return; 297631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 297791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier DeclaratorChunk &chunk = D.getTypeObject(inner); 297831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (chunk.Kind == DeclaratorChunk::Pointer) { 297931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (declSpecTy->isObjCRetainableType()) 298031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return transferARCOwnershipToDeclSpec(S, declSpecTy, ownership); 29816ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis if (declSpecTy->isObjCObjectType() && hasIndirection) 298231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return transferARCOwnershipToDeclaratorChunk(state, ownership, inner); 298331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } else { 298431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis assert(chunk.Kind == DeclaratorChunk::Array || 298531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis chunk.Kind == DeclaratorChunk::Reference); 298631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return transferARCOwnershipToDeclSpec(S, declSpecTy, ownership); 298731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 298831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis} 298931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 299031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios KyrtzidisTypeSourceInfo *Sema::GetTypeForDeclaratorCast(Declarator &D, QualType FromTy) { 299131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis TypeProcessingState state(*this, D); 299231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 299331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis TypeSourceInfo *ReturnTypeInfo = 0; 299431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis QualType declSpecTy = GetDeclSpecTypeForDeclarator(state, ReturnTypeInfo); 299531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (declSpecTy.isNull()) 299631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return Context.getNullTypeSourceInfo(); 299731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 29984e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjCAutoRefCount) { 299931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers::ObjCLifetime ownership = Context.getInnerObjCOwnership(FromTy); 300031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (ownership != Qualifiers::OCL_None) 300131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis transferARCOwnership(state, declSpecTy, ownership); 300231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 300331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 300431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return GetFullTypeForDeclarator(state, declSpecTy, ReturnTypeInfo); 300531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis} 300631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 300714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall/// Map an AttributedType::Kind to an AttributeList::Kind. 300814aa2175416f79ef17811282afbf425f87d54ebfJohn McCallstatic AttributeList::Kind getAttrListKind(AttributedType::Kind kind) { 300914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall switch (kind) { 301014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_address_space: 30118e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_AddressSpace; 301214aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_regparm: 30138e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_Regparm; 301414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_vector_size: 30158e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_VectorSize; 301614aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_neon_vector_type: 30178e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_NeonVectorType; 301814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_neon_polyvector_type: 30198e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_NeonPolyVectorType; 302014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_objc_gc: 30218e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_ObjCGC; 3022b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis case AttributedType::attr_objc_ownership: 30238e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_ObjCOwnership; 302414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_noreturn: 30258e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_NoReturn; 302614aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_cdecl: 30278e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_CDecl; 302814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_fastcall: 30298e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_FastCall; 303014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_stdcall: 30318e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_StdCall; 303214aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_thiscall: 30338e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_ThisCall; 303414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_pascal: 30358e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_Pascal; 3036414d8967e1d760ea1e19a4aca96b13777a8cf8c5Anton Korobeynikov case AttributedType::attr_pcs: 30378e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_Pcs; 3038263366f9241366f29ba65b703120f302490c39ffDerek Schuff case AttributedType::attr_pnaclcall: 3039263366f9241366f29ba65b703120f302490c39ffDerek Schuff return AttributeList::AT_PnaclCall; 304038980086c0f791e8c23cc882574f18e5b4a87db6Guy Benyei case AttributedType::attr_inteloclbicc: 304138980086c0f791e8c23cc882574f18e5b4a87db6Guy Benyei return AttributeList::AT_IntelOclBicc; 304214aa2175416f79ef17811282afbf425f87d54ebfJohn McCall } 304314aa2175416f79ef17811282afbf425f87d54ebfJohn McCall llvm_unreachable("unexpected attribute kind!"); 304414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall} 304514aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 304614aa2175416f79ef17811282afbf425f87d54ebfJohn McCallstatic void fillAttributedTypeLoc(AttributedTypeLoc TL, 304714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall const AttributeList *attrs) { 304814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall AttributedType::Kind kind = TL.getAttrKind(); 304914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 305014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall assert(attrs && "no type attributes in the expected location!"); 305114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall AttributeList::Kind parsedKind = getAttrListKind(kind); 305214aa2175416f79ef17811282afbf425f87d54ebfJohn McCall while (attrs->getKind() != parsedKind) { 305314aa2175416f79ef17811282afbf425f87d54ebfJohn McCall attrs = attrs->getNext(); 305414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall assert(attrs && "no matching attribute in expected location!"); 305514aa2175416f79ef17811282afbf425f87d54ebfJohn McCall } 305614aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 305714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall TL.setAttrNameLoc(attrs->getLoc()); 305814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall if (TL.hasAttrExprOperand()) 305914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall TL.setAttrExprOperand(attrs->getArg(0)); 306014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall else if (TL.hasAttrEnumOperand()) 306114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall TL.setAttrEnumOperandLoc(attrs->getParameterLoc()); 306214aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 306314aa2175416f79ef17811282afbf425f87d54ebfJohn McCall // FIXME: preserve this information to here. 306414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall if (TL.hasAttrOperand()) 306514aa2175416f79ef17811282afbf425f87d54ebfJohn McCall TL.setAttrOperandParensRange(SourceRange()); 306614aa2175416f79ef17811282afbf425f87d54ebfJohn McCall} 306714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 306851bd803fbdade51d674598ed45da3d54190a656cJohn McCallnamespace { 306951bd803fbdade51d674598ed45da3d54190a656cJohn McCall class TypeSpecLocFiller : public TypeLocVisitor<TypeSpecLocFiller> { 3070c21c7e9c2cded68f91be15be6847c9649242dc17Douglas Gregor ASTContext &Context; 307151bd803fbdade51d674598ed45da3d54190a656cJohn McCall const DeclSpec &DS; 3072f352bddf015e537350416c296dd2963524f554f9Argyrios Kyrtzidis 307351bd803fbdade51d674598ed45da3d54190a656cJohn McCall public: 307491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier TypeSpecLocFiller(ASTContext &Context, const DeclSpec &DS) 3075c21c7e9c2cded68f91be15be6847c9649242dc17Douglas Gregor : Context(Context), DS(DS) {} 3076f352bddf015e537350416c296dd2963524f554f9Argyrios Kyrtzidis 307714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall void VisitAttributedTypeLoc(AttributedTypeLoc TL) { 307814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall fillAttributedTypeLoc(TL, DS.getAttributes().getList()); 307914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall Visit(TL.getModifiedLoc()); 308014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall } 308151bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitQualifiedTypeLoc(QualifiedTypeLoc TL) { 308251bd803fbdade51d674598ed45da3d54190a656cJohn McCall Visit(TL.getUnqualifiedLoc()); 308351bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 308451bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitTypedefTypeLoc(TypedefTypeLoc TL) { 308551bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setNameLoc(DS.getTypeSpecTypeLoc()); 308651bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 308751bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) { 308851bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setNameLoc(DS.getTypeSpecTypeLoc()); 30891de6a6cb485fb58b4fb100282bb3cf298eedacd9Fariborz Jahanian // FIXME. We should have DS.getTypeSpecTypeEndLoc(). But, it requires 30901de6a6cb485fb58b4fb100282bb3cf298eedacd9Fariborz Jahanian // addition field. What we have is good enough for dispay of location 30911de6a6cb485fb58b4fb100282bb3cf298eedacd9Fariborz Jahanian // of 'fixit' on interface name. 30921de6a6cb485fb58b4fb100282bb3cf298eedacd9Fariborz Jahanian TL.setNameEndLoc(DS.getLocEnd()); 3093c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } 3094c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall void VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) { 3095c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall // Handle the base type, which might not have been written explicitly. 3096c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall if (DS.getTypeSpecType() == DeclSpec::TST_unspecified) { 3097c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall TL.setHasBaseTypeAsWritten(false); 3098c21c7e9c2cded68f91be15be6847c9649242dc17Douglas Gregor TL.getBaseLoc().initialize(Context, SourceLocation()); 3099c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else { 3100c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall TL.setHasBaseTypeAsWritten(true); 3101c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Visit(TL.getBaseLoc()); 3102c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } 310354e14c4db764c0636160d26c5bbf491637c83a76John McCall 3104c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall // Protocol qualifiers. 310554e14c4db764c0636160d26c5bbf491637c83a76John McCall if (DS.getProtocolQualifiers()) { 310654e14c4db764c0636160d26c5bbf491637c83a76John McCall assert(TL.getNumProtocols() > 0); 310754e14c4db764c0636160d26c5bbf491637c83a76John McCall assert(TL.getNumProtocols() == DS.getNumProtocolQualifiers()); 310854e14c4db764c0636160d26c5bbf491637c83a76John McCall TL.setLAngleLoc(DS.getProtocolLAngleLoc()); 310954e14c4db764c0636160d26c5bbf491637c83a76John McCall TL.setRAngleLoc(DS.getSourceRange().getEnd()); 311054e14c4db764c0636160d26c5bbf491637c83a76John McCall for (unsigned i = 0, e = DS.getNumProtocolQualifiers(); i != e; ++i) 311154e14c4db764c0636160d26c5bbf491637c83a76John McCall TL.setProtocolLoc(i, DS.getProtocolLocs()[i]); 311254e14c4db764c0636160d26c5bbf491637c83a76John McCall } else { 311354e14c4db764c0636160d26c5bbf491637c83a76John McCall assert(TL.getNumProtocols() == 0); 311454e14c4db764c0636160d26c5bbf491637c83a76John McCall TL.setLAngleLoc(SourceLocation()); 311554e14c4db764c0636160d26c5bbf491637c83a76John McCall TL.setRAngleLoc(SourceLocation()); 311654e14c4db764c0636160d26c5bbf491637c83a76John McCall } 311751bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 311854e14c4db764c0636160d26c5bbf491637c83a76John McCall void VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) { 311954e14c4db764c0636160d26c5bbf491637c83a76John McCall TL.setStarLoc(SourceLocation()); 3120c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Visit(TL.getPointeeLoc()); 312151bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 3122833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall void VisitTemplateSpecializationTypeLoc(TemplateSpecializationTypeLoc TL) { 3123a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TypeSourceInfo *TInfo = 0; 3124b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 3125833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall 3126833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall // If we got no declarator info from previous Sema routines, 3127833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall // just fill with the typespec loc. 3128a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall if (!TInfo) { 31290daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara TL.initialize(Context, DS.getTypeSpecTypeNameLoc()); 3130833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall return; 3131833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall } 3132833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall 3133e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara TypeLoc OldTL = TInfo->getTypeLoc(); 3134e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara if (TInfo->getType()->getAs<ElaboratedType>()) { 3135e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara ElaboratedTypeLoc ElabTL = cast<ElaboratedTypeLoc>(OldTL); 3136e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara TemplateSpecializationTypeLoc NamedTL = 3137e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara cast<TemplateSpecializationTypeLoc>(ElabTL.getNamedTypeLoc()); 3138e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara TL.copy(NamedTL); 3139e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara } 3140e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara else 3141e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara TL.copy(cast<TemplateSpecializationTypeLoc>(OldTL)); 3142833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall } 3143cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall void VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) { 3144cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall assert(DS.getTypeSpecType() == DeclSpec::TST_typeofExpr); 3145cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setTypeofLoc(DS.getTypeSpecTypeLoc()); 3146cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setParensRange(DS.getTypeofParensRange()); 3147cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall } 3148cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall void VisitTypeOfTypeLoc(TypeOfTypeLoc TL) { 3149cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall assert(DS.getTypeSpecType() == DeclSpec::TST_typeofType); 3150cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setTypeofLoc(DS.getTypeSpecTypeLoc()); 3151cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setParensRange(DS.getTypeofParensRange()); 3152b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall assert(DS.getRepAsType()); 3153cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TypeSourceInfo *TInfo = 0; 3154b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 3155cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setUnderlyingTInfo(TInfo); 3156cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall } 3157ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt void VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) { 3158ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt // FIXME: This holds only because we only have one unary transform. 3159ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt assert(DS.getTypeSpecType() == DeclSpec::TST_underlyingType); 3160ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt TL.setKWLoc(DS.getTypeSpecTypeLoc()); 3161ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt TL.setParensRange(DS.getTypeofParensRange()); 3162ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt assert(DS.getRepAsType()); 3163ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt TypeSourceInfo *TInfo = 0; 3164ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 3165ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt TL.setUnderlyingTInfo(TInfo); 3166ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } 3167ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor void VisitBuiltinTypeLoc(BuiltinTypeLoc TL) { 3168ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // By default, use the source location of the type specifier. 3169ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor TL.setBuiltinLoc(DS.getTypeSpecTypeLoc()); 3170ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor if (TL.needsExtraLocalData()) { 3171ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // Set info for the written builtin specifiers. 3172ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor TL.getWrittenBuiltinSpecs() = DS.getWrittenBuiltinSpecs(); 3173ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // Try to have a meaningful source location. 3174ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor if (TL.getWrittenSignSpec() != TSS_unspecified) 3175ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // Sign spec loc overrides the others (e.g., 'unsigned long'). 3176ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor TL.setBuiltinLoc(DS.getTypeSpecSignLoc()); 3177ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor else if (TL.getWrittenWidthSpec() != TSW_unspecified) 3178ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // Width spec loc overrides type spec loc (e.g., 'short int'). 3179ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor TL.setBuiltinLoc(DS.getTypeSpecWidthLoc()); 3180ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor } 3181ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor } 3182e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara void VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) { 3183e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara ElaboratedTypeKeyword Keyword 3184e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara = TypeWithKeyword::getKeywordForTypeSpec(DS.getTypeSpecType()); 3185253e80b019727451edb4cbcad71277fcbe05ff0eNico Weber if (DS.getTypeSpecType() == TST_typename) { 3186e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara TypeSourceInfo *TInfo = 0; 3187b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 3188e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara if (TInfo) { 3189e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara TL.copy(cast<ElaboratedTypeLoc>(TInfo->getTypeLoc())); 3190e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara return; 3191e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara } 3192e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara } 319338a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara TL.setElaboratedKeywordLoc(Keyword != ETK_None 319438a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara ? DS.getTypeSpecTypeLoc() 319538a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara : SourceLocation()); 3196e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara const CXXScopeSpec& SS = DS.getTypeSpecScope(); 31979e876876afc13aa671cc11a17c19907c599b9ab9Douglas Gregor TL.setQualifierLoc(SS.getWithLocInContext(Context)); 3198e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara Visit(TL.getNextTypeLoc().getUnqualifiedLoc()); 3199e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara } 3200e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara void VisitDependentNameTypeLoc(DependentNameTypeLoc TL) { 320166581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara assert(DS.getTypeSpecType() == TST_typename); 320266581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara TypeSourceInfo *TInfo = 0; 320366581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 320466581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara assert(TInfo); 320566581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara TL.copy(cast<DependentNameTypeLoc>(TInfo->getTypeLoc())); 320633500955d731c73717af52088b7fc0e7a85681e7John McCall } 320733500955d731c73717af52088b7fc0e7a85681e7John McCall void VisitDependentTemplateSpecializationTypeLoc( 320833500955d731c73717af52088b7fc0e7a85681e7John McCall DependentTemplateSpecializationTypeLoc TL) { 320966581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara assert(DS.getTypeSpecType() == TST_typename); 321066581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara TypeSourceInfo *TInfo = 0; 321166581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 321266581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara assert(TInfo); 321366581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara TL.copy(cast<DependentTemplateSpecializationTypeLoc>( 321466581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara TInfo->getTypeLoc())); 32150daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara } 32160daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara void VisitTagTypeLoc(TagTypeLoc TL) { 32170daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara TL.setNameLoc(DS.getTypeSpecTypeNameLoc()); 3218e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara } 3219b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman void VisitAtomicTypeLoc(AtomicTypeLoc TL) { 3220b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman TL.setKWLoc(DS.getTypeSpecTypeLoc()); 3221b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman TL.setParensRange(DS.getTypeofParensRange()); 322291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 322343fe245b37c3cd36d837aab9eb98551328d30141Douglas Gregor TypeSourceInfo *TInfo = 0; 322443fe245b37c3cd36d837aab9eb98551328d30141Douglas Gregor Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 322543fe245b37c3cd36d837aab9eb98551328d30141Douglas Gregor TL.getValueLoc().initializeFullCopy(TInfo->getTypeLoc()); 3226b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman } 3227e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara 322851bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitTypeLoc(TypeLoc TL) { 322951bd803fbdade51d674598ed45da3d54190a656cJohn McCall // FIXME: add other typespec types and change this to an assert. 3230c21c7e9c2cded68f91be15be6847c9649242dc17Douglas Gregor TL.initialize(Context, DS.getTypeSpecTypeLoc()); 323151bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 323251bd803fbdade51d674598ed45da3d54190a656cJohn McCall }; 3233eb66759e9a1d7c041354d132a14674b2d948059bArgyrios Kyrtzidis 323451bd803fbdade51d674598ed45da3d54190a656cJohn McCall class DeclaratorLocFiller : public TypeLocVisitor<DeclaratorLocFiller> { 3235b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara ASTContext &Context; 323651bd803fbdade51d674598ed45da3d54190a656cJohn McCall const DeclaratorChunk &Chunk; 3237f352bddf015e537350416c296dd2963524f554f9Argyrios Kyrtzidis 323851bd803fbdade51d674598ed45da3d54190a656cJohn McCall public: 3239b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara DeclaratorLocFiller(ASTContext &Context, const DeclaratorChunk &Chunk) 3240b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara : Context(Context), Chunk(Chunk) {} 32414adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis 324251bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitQualifiedTypeLoc(QualifiedTypeLoc TL) { 32439f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("qualified type locs not expected here!"); 324451bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 32454adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis 3246f85e193739c953358c865005855253af4f68a497John McCall void VisitAttributedTypeLoc(AttributedTypeLoc TL) { 3247f85e193739c953358c865005855253af4f68a497John McCall fillAttributedTypeLoc(TL, Chunk.getAttrs()); 3248f85e193739c953358c865005855253af4f68a497John McCall } 324951bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) { 325051bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::BlockPointer); 325151bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setCaretLoc(Chunk.Loc); 32524adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 325351bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitPointerTypeLoc(PointerTypeLoc TL) { 325451bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Pointer); 325551bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setStarLoc(Chunk.Loc); 32564adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 325751bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) { 325851bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Pointer); 325951bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setStarLoc(Chunk.Loc); 32604adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 326151bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) { 326251bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::MemberPointer); 3263b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara const CXXScopeSpec& SS = Chunk.Mem.Scope(); 3264b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara NestedNameSpecifierLoc NNSLoc = SS.getWithLocInContext(Context); 3265b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara 3266b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara const Type* ClsTy = TL.getClass(); 3267b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara QualType ClsQT = QualType(ClsTy, 0); 3268b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara TypeSourceInfo *ClsTInfo = Context.CreateTypeSourceInfo(ClsQT, 0); 3269b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara // Now copy source location info into the type loc component. 3270b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara TypeLoc ClsTL = ClsTInfo->getTypeLoc(); 3271b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara switch (NNSLoc.getNestedNameSpecifier()->getKind()) { 3272b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::Identifier: 3273b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara assert(isa<DependentNameType>(ClsTy) && "Unexpected TypeLoc"); 3274b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara { 3275fd9c42ed22fb4f7f865f7d8f8848df84ddf8262cAbramo Bagnara DependentNameTypeLoc DNTLoc = cast<DependentNameTypeLoc>(ClsTL); 327638a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara DNTLoc.setElaboratedKeywordLoc(SourceLocation()); 3277b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara DNTLoc.setQualifierLoc(NNSLoc.getPrefix()); 3278b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara DNTLoc.setNameLoc(NNSLoc.getLocalBeginLoc()); 3279b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara } 3280b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara break; 3281b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara 3282b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::TypeSpec: 3283b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::TypeSpecWithTemplate: 3284b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara if (isa<ElaboratedType>(ClsTy)) { 3285b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara ElaboratedTypeLoc ETLoc = *cast<ElaboratedTypeLoc>(&ClsTL); 328638a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara ETLoc.setElaboratedKeywordLoc(SourceLocation()); 3287b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara ETLoc.setQualifierLoc(NNSLoc.getPrefix()); 3288b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara TypeLoc NamedTL = ETLoc.getNamedTypeLoc(); 3289b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara NamedTL.initializeFullCopy(NNSLoc.getTypeLoc()); 3290b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara } else { 3291b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara ClsTL.initializeFullCopy(NNSLoc.getTypeLoc()); 3292b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara } 3293b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara break; 3294b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara 3295b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::Namespace: 3296b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::NamespaceAlias: 3297b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::Global: 3298b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara llvm_unreachable("Nested-name-specifier must name a type"); 3299b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara } 3300b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara 3301b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara // Finally fill in MemberPointerLocInfo fields. 330251bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setStarLoc(Chunk.Loc); 3303b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara TL.setClassTInfo(ClsTInfo); 33044adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 330551bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) { 330651bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Reference); 330754e14c4db764c0636160d26c5bbf491637c83a76John McCall // 'Amp' is misleading: this might have been originally 330854e14c4db764c0636160d26c5bbf491637c83a76John McCall /// spelled with AmpAmp. 330951bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setAmpLoc(Chunk.Loc); 331051bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 331151bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) { 331251bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Reference); 331351bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(!Chunk.Ref.LValueRef); 331451bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setAmpAmpLoc(Chunk.Loc); 331551bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 331651bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitArrayTypeLoc(ArrayTypeLoc TL) { 331751bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Array); 331851bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setLBracketLoc(Chunk.Loc); 331951bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setRBracketLoc(Chunk.EndLoc); 332051bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setSizeExpr(static_cast<Expr*>(Chunk.Arr.NumElts)); 332151bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 332251bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitFunctionTypeLoc(FunctionTypeLoc TL) { 332351bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Function); 3324796aa443ab5ed036f42ef33fed629e1b4b34871bAbramo Bagnara TL.setLocalRangeBegin(Chunk.Loc); 3325796aa443ab5ed036f42ef33fed629e1b4b34871bAbramo Bagnara TL.setLocalRangeEnd(Chunk.EndLoc); 332651bd803fbdade51d674598ed45da3d54190a656cJohn McCall 332751bd803fbdade51d674598ed45da3d54190a656cJohn McCall const DeclaratorChunk::FunctionTypeInfo &FTI = Chunk.Fun; 332859c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara TL.setLParenLoc(FTI.getLParenLoc()); 332959c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara TL.setRParenLoc(FTI.getRParenLoc()); 333054e14c4db764c0636160d26c5bbf491637c83a76John McCall for (unsigned i = 0, e = TL.getNumArgs(), tpi = 0; i != e; ++i) { 3331d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall ParmVarDecl *Param = cast<ParmVarDecl>(FTI.ArgInfo[i].Param); 333254e14c4db764c0636160d26c5bbf491637c83a76John McCall TL.setArg(tpi++, Param); 33334adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 333451bd803fbdade51d674598ed45da3d54190a656cJohn McCall // FIXME: exception specs 33354adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 3336075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara void VisitParenTypeLoc(ParenTypeLoc TL) { 3337075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara assert(Chunk.Kind == DeclaratorChunk::Paren); 3338075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara TL.setLParenLoc(Chunk.Loc); 3339075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara TL.setRParenLoc(Chunk.EndLoc); 3340075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara } 33411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 334251bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitTypeLoc(TypeLoc TL) { 33439f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("unsupported TypeLoc kind in declarator!"); 33444adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 334551bd803fbdade51d674598ed45da3d54190a656cJohn McCall }; 334651bd803fbdade51d674598ed45da3d54190a656cJohn McCall} 33474adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis 3348a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall/// \brief Create and instantiate a TypeSourceInfo with type source information. 334951bd803fbdade51d674598ed45da3d54190a656cJohn McCall/// 335051bd803fbdade51d674598ed45da3d54190a656cJohn McCall/// \param T QualType referring to the type as written in source code. 335105baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// 335205baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// \param ReturnTypeInfo For declarators whose return type does not show 335305baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// up in the normal place in the declaration specifiers (such as a C++ 335405baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// conversion function), this pointer will refer to a type source information 335505baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// for that return type. 3356a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCallTypeSourceInfo * 335705baacbfd67017b2724f3e0503fd23609f5d32bcDouglas GregorSema::GetTypeSourceInfoForDeclarator(Declarator &D, QualType T, 335805baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor TypeSourceInfo *ReturnTypeInfo) { 3359a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TypeSourceInfo *TInfo = Context.CreateTypeSourceInfo(T); 3360a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall UnqualTypeLoc CurrTL = TInfo->getTypeLoc().getUnqualifiedLoc(); 336151bd803fbdade51d674598ed45da3d54190a656cJohn McCall 3362a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // Handle parameter packs whose type is a pack expansion. 3363a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor if (isa<PackExpansionType>(T)) { 3364a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor cast<PackExpansionTypeLoc>(CurrTL).setEllipsisLoc(D.getEllipsisLoc()); 336591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier CurrTL = CurrTL.getNextTypeLoc().getUnqualifiedLoc(); 3366a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } 336791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 33688ce35b095e8fca45e04c1bda14ed0548ce7536adSebastian Redl for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 336914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall while (isa<AttributedTypeLoc>(CurrTL)) { 337014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall AttributedTypeLoc TL = cast<AttributedTypeLoc>(CurrTL); 337114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall fillAttributedTypeLoc(TL, D.getTypeObject(i).getAttrs()); 337214aa2175416f79ef17811282afbf425f87d54ebfJohn McCall CurrTL = TL.getNextTypeLoc().getUnqualifiedLoc(); 337314aa2175416f79ef17811282afbf425f87d54ebfJohn McCall } 337414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 3375b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara DeclaratorLocFiller(Context, D.getTypeObject(i)).Visit(CurrTL); 337651bd803fbdade51d674598ed45da3d54190a656cJohn McCall CurrTL = CurrTL.getNextTypeLoc().getUnqualifiedLoc(); 33774adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 337891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 3379b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall // If we have different source information for the return type, use 3380b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall // that. This really only applies to C++ conversion functions. 3381b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ReturnTypeInfo) { 338205baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor TypeLoc TL = ReturnTypeInfo->getTypeLoc(); 338305baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor assert(TL.getFullDataSize() == CurrTL.getFullDataSize()); 338405baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor memcpy(CurrTL.getOpaqueData(), TL.getOpaqueData(), TL.getFullDataSize()); 3385b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall } else { 3386c21c7e9c2cded68f91be15be6847c9649242dc17Douglas Gregor TypeSpecLocFiller(Context, D.getDeclSpec()).Visit(CurrTL); 338705baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor } 338891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 3389a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall return TInfo; 33904adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis} 33914adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis 3392a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall/// \brief Create a LocInfoType to hold the given QualType and TypeSourceInfo. 3393b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCallParsedType Sema::CreateParsedType(QualType T, TypeSourceInfo *TInfo) { 33941bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis // FIXME: LocInfoTypes are "transient", only needed for passing to/from Parser 33951bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis // and Sema during declaration parsing. Try deallocating/caching them when 33961bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis // it's appropriate, instead of allocating them and keeping them around. 339791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier LocInfoType *LocT = (LocInfoType*)BumpAlloc.Allocate(sizeof(LocInfoType), 3398eb0eb49ce5f5294902769702b9322e42e89e972eDouglas Gregor TypeAlignment); 3399a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall new (LocT) LocInfoType(T, TInfo); 34001bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis assert(LocT->getTypeClass() != T->getTypeClass() && 34011bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis "LocInfoType's TypeClass conflicts with an existing Type class"); 3402b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall return ParsedType::make(QualType(LocT, 0)); 34031bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis} 34041bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis 34051bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidisvoid LocInfoType::getAsStringInternal(std::string &Str, 34061bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis const PrintingPolicy &Policy) const { 3407b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("LocInfoType leaked into the type system; an opaque TypeTy*" 340835d44e5673e772d1cc7eab66818de8d9796b89caArgyrios Kyrtzidis " was used directly instead of getting the QualType through" 340935d44e5673e772d1cc7eab66818de8d9796b89caArgyrios Kyrtzidis " GetTypeFromParser"); 34101bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis} 34111bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis 3412f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCallTypeResult Sema::ActOnTypeName(Scope *S, Declarator &D) { 34135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.7.6: Type names have no identifier. This is already validated by 34145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the parser. 34155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(D.getIdentifier() == 0 && "Type name should have no identifier!"); 34161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3417d3880f8458bb6a03818ee01f758c32f945de3eaaArgyrios Kyrtzidis TypeSourceInfo *TInfo = GetTypeForDeclarator(D, S); 3418bf1a028246d884a540aeafa38e89be59a269b072John McCall QualType T = TInfo->getType(); 34195153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner if (D.isInvalidType()) 3420809070a886684cb5b92eb0e00a6581ab1fa6b17aDouglas Gregor return true; 34215912a3544e438a92832b8c52c13f48d4f54795dcSteve Naroff 3422e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall // Make sure there are no unused decl attributes on the declarator. 3423cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall // We don't want to do this for ObjC parameters because we're going 3424cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall // to apply them to the actual parameter declaration. 3425cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall if (D.getContext() != Declarator::ObjCParameterContext) 3426cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall checkUnusedDeclAttributes(D); 3427e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall 34284e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus) { 3429402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor // Check that there are no default arguments (C++ only). 34306d6eb57225b53fb627c565861d1d0e90645400d1Douglas Gregor CheckExtraCXXDefaultArguments(D); 3431402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor } 3432402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor 3433b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall return CreateParsedType(T, TInfo); 34345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 34355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3436e97179c675b341927807c718be215c8d1aab8acbDouglas GregorParsedType Sema::ActOnObjCInstanceType(SourceLocation Loc) { 3437e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor QualType T = Context.getObjCInstanceType(); 3438e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor TypeSourceInfo *TInfo = Context.getTrivialTypeSourceInfo(T, Loc); 3439e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor return CreateParsedType(T, TInfo); 3440e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor} 3441e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor 3442e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor 3443c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner//===----------------------------------------------------------------------===// 3444c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner// Type Attribute Processing 3445c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner//===----------------------------------------------------------------------===// 3446232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner 3447232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner/// HandleAddressSpaceTypeAttribute - Process an address_space attribute on the 3448c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner/// specified type. The attribute contains 1 argument, the id of the address 3449c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner/// space for the type. 34501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpstatic void HandleAddressSpaceTypeAttribute(QualType &Type, 3451c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner const AttributeList &Attr, Sema &S){ 34520953e767ff7817f97b3ab20896b229891eeff45bJohn McCall 3453232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner // If this type is already address space qualified, reject it. 345429e3ef8df84da298e7553a84276af4909ff6e9ebPeter Collingbourne // ISO/IEC TR 18037 S5.3 (amending C99 6.7.3): "No type shall be qualified by 345529e3ef8df84da298e7553a84276af4909ff6e9ebPeter Collingbourne // qualifiers for two or more different address spaces." 3456232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner if (Type.getAddressSpace()) { 3457c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_address_multiple_qualifiers); 3458e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 3459c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner return; 3460232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner } 34611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3462020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne // ISO/IEC TR 18037 S5.3 (amending C99 6.7.3): "A function type shall not be 3463020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne // qualified by an address-space qualifier." 3464020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne if (Type->isFunctionType()) { 3465020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne S.Diag(Attr.getLoc(), diag::err_attribute_address_function_type); 3466020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne Attr.setInvalid(); 3467020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne return; 3468020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne } 3469020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne 3470232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner // Check the attribute arguments. 3471545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 1) { 3472f3a41af4d5c98a72a1d6720bbbfd658e57ef2541Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 3473e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 3474c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner return; 3475232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner } 3476545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *ASArgExpr = static_cast<Expr *>(Attr.getArg(0)); 3477232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner llvm::APSInt addrSpace(32); 3478ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (ASArgExpr->isTypeDependent() || ASArgExpr->isValueDependent() || 3479ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !ASArgExpr->isIntegerConstantExpr(addrSpace, S.Context)) { 3480dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_address_space_not_int) 3481dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << ASArgExpr->getSourceRange(); 3482e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 3483c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner return; 3484232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner } 3485232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner 3486efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall // Bounds checking. 3487efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall if (addrSpace.isSigned()) { 3488efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall if (addrSpace.isNegative()) { 3489efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall S.Diag(Attr.getLoc(), diag::err_attribute_address_space_negative) 3490efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall << ASArgExpr->getSourceRange(); 3491e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 3492efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall return; 3493efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall } 3494efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall addrSpace.setIsSigned(false); 3495efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall } 3496efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall llvm::APSInt max(addrSpace.getBitWidth()); 34970953e767ff7817f97b3ab20896b229891eeff45bJohn McCall max = Qualifiers::MaxAddressSpace; 3498efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall if (addrSpace > max) { 3499efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall S.Diag(Attr.getLoc(), diag::err_attribute_address_space_too_high) 35000953e767ff7817f97b3ab20896b229891eeff45bJohn McCall << Qualifiers::MaxAddressSpace << ASArgExpr->getSourceRange(); 3501e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 3502efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall return; 3503efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall } 3504efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall 35051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned ASIdx = static_cast<unsigned>(addrSpace.getZExtValue()); 3506f11284ac87daa613bc7b30db9f54bd716d123222Fariborz Jahanian Type = S.Context.getAddrSpaceQualType(Type, ASIdx); 3507c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner} 3508c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner 3509d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall/// Does this type have a "direct" ownership qualifier? That is, 3510d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall/// is it written like "__strong id", as opposed to something like 3511d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall/// "typeof(foo)", where that happens to be strong? 3512d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCallstatic bool hasDirectOwnershipQualifier(QualType type) { 3513d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // Fast path: no qualifier at all. 3514d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall assert(type.getQualifiers().hasObjCLifetime()); 3515d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3516d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall while (true) { 3517d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // __strong id 3518d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (const AttributedType *attr = dyn_cast<AttributedType>(type)) { 3519d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (attr->getAttrKind() == AttributedType::attr_objc_ownership) 3520d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall return true; 3521d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3522d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall type = attr->getModifiedType(); 3523d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3524d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // X *__strong (...) 3525d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } else if (const ParenType *paren = dyn_cast<ParenType>(type)) { 3526d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall type = paren->getInnerType(); 352791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 3528d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // That's it for things we want to complain about. In particular, 3529d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // we do not want to look through typedefs, typeof(expr), 3530d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // typeof(type), or any other way that the type is somehow 3531d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // abstracted. 3532d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } else { 353391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 3534d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall return false; 3535d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 3536d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 3537d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall} 3538d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3539b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis/// handleObjCOwnershipTypeAttr - Process an objc_ownership 3540f85e193739c953358c865005855253af4f68a497John McCall/// attribute on the specified type. 3541f85e193739c953358c865005855253af4f68a497John McCall/// 3542f85e193739c953358c865005855253af4f68a497John McCall/// Returns 'true' if the attribute was handled. 3543b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidisstatic bool handleObjCOwnershipTypeAttr(TypeProcessingState &state, 3544f85e193739c953358c865005855253af4f68a497John McCall AttributeList &attr, 3545f85e193739c953358c865005855253af4f68a497John McCall QualType &type) { 3546e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis bool NonObjCPointer = false; 3547e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis 3548e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis if (!type->isDependentType()) { 3549e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis if (const PointerType *ptr = type->getAs<PointerType>()) { 3550e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis QualType pointee = ptr->getPointeeType(); 3551e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis if (pointee->isObjCRetainableType() || pointee->isPointerType()) 3552e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis return false; 3553e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis // It is important not to lose the source info that there was an attribute 3554e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis // applied to non-objc pointer. We will create an attributed type but 3555e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis // its type will be the same as the original type. 3556e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis NonObjCPointer = true; 3557e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } else if (!type->isObjCRetainableType()) { 3558e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis return false; 3559e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } 3560e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } 3561f85e193739c953358c865005855253af4f68a497John McCall 3562f85e193739c953358c865005855253af4f68a497John McCall Sema &S = state.getSema(); 3563440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis SourceLocation AttrLoc = attr.getLoc(); 3564440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis if (AttrLoc.isMacroID()) 3565440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis AttrLoc = S.getSourceManager().getImmediateExpansionRange(AttrLoc).first; 3566f85e193739c953358c865005855253af4f68a497John McCall 3567f85e193739c953358c865005855253af4f68a497John McCall if (!attr.getParameterName()) { 3568440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis S.Diag(AttrLoc, diag::err_attribute_argument_n_not_string) 3569b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis << "objc_ownership" << 1; 3570f85e193739c953358c865005855253af4f68a497John McCall attr.setInvalid(); 3571f85e193739c953358c865005855253af4f68a497John McCall return true; 3572f85e193739c953358c865005855253af4f68a497John McCall } 3573f85e193739c953358c865005855253af4f68a497John McCall 3574d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // Consume lifetime attributes without further comment outside of 3575d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // ARC mode. 35764e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().ObjCAutoRefCount) 3577d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall return true; 3578d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3579f85e193739c953358c865005855253af4f68a497John McCall Qualifiers::ObjCLifetime lifetime; 3580f85e193739c953358c865005855253af4f68a497John McCall if (attr.getParameterName()->isStr("none")) 3581f85e193739c953358c865005855253af4f68a497John McCall lifetime = Qualifiers::OCL_ExplicitNone; 3582f85e193739c953358c865005855253af4f68a497John McCall else if (attr.getParameterName()->isStr("strong")) 3583f85e193739c953358c865005855253af4f68a497John McCall lifetime = Qualifiers::OCL_Strong; 3584f85e193739c953358c865005855253af4f68a497John McCall else if (attr.getParameterName()->isStr("weak")) 3585f85e193739c953358c865005855253af4f68a497John McCall lifetime = Qualifiers::OCL_Weak; 3586f85e193739c953358c865005855253af4f68a497John McCall else if (attr.getParameterName()->isStr("autoreleasing")) 3587f85e193739c953358c865005855253af4f68a497John McCall lifetime = Qualifiers::OCL_Autoreleasing; 3588f85e193739c953358c865005855253af4f68a497John McCall else { 3589440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis S.Diag(AttrLoc, diag::warn_attribute_type_not_supported) 3590b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis << "objc_ownership" << attr.getParameterName(); 3591f85e193739c953358c865005855253af4f68a497John McCall attr.setInvalid(); 3592f85e193739c953358c865005855253af4f68a497John McCall return true; 3593f85e193739c953358c865005855253af4f68a497John McCall } 3594f85e193739c953358c865005855253af4f68a497John McCall 3595d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall SplitQualType underlyingType = type.split(); 3596d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3597d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // Check for redundant/conflicting ownership qualifiers. 3598d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (Qualifiers::ObjCLifetime previousLifetime 3599d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall = type.getQualifiers().getObjCLifetime()) { 3600d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // If it's written directly, that's an error. 3601d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (hasDirectOwnershipQualifier(type)) { 3602d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall S.Diag(AttrLoc, diag::err_attr_objc_ownership_redundant) 3603d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall << type; 3604d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall return true; 3605d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 3606d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3607d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // Otherwise, if the qualifiers actually conflict, pull sugar off 3608d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // until we reach a type that is directly qualified. 3609d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (previousLifetime != lifetime) { 3610d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // This should always terminate: the canonical type is 3611d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // qualified, so some bit of sugar must be hiding it. 3612d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall while (!underlyingType.Quals.hasObjCLifetime()) { 3613d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall underlyingType = underlyingType.getSingleStepDesugaredType(); 3614d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 3615d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall underlyingType.Quals.removeObjCLifetime(); 3616d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 3617d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 3618d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3619d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall underlyingType.Quals.addObjCLifetime(lifetime); 3620f85e193739c953358c865005855253af4f68a497John McCall 3621e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis if (NonObjCPointer) { 3622e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis StringRef name = attr.getName()->getName(); 3623e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis switch (lifetime) { 3624e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_None: 3625e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_ExplicitNone: 3626e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis break; 3627e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_Strong: name = "__strong"; break; 3628e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_Weak: name = "__weak"; break; 3629e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_Autoreleasing: name = "__autoreleasing"; break; 3630e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } 3631e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis S.Diag(AttrLoc, diag::warn_objc_object_attribute_wrong_type) 3632e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis << name << type; 3633e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } 3634e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis 3635f85e193739c953358c865005855253af4f68a497John McCall QualType origType = type; 3636e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis if (!NonObjCPointer) 3637d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall type = S.Context.getQualifiedType(underlyingType); 3638f85e193739c953358c865005855253af4f68a497John McCall 3639f85e193739c953358c865005855253af4f68a497John McCall // If we have a valid source location for the attribute, use an 3640f85e193739c953358c865005855253af4f68a497John McCall // AttributedType instead. 3641440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis if (AttrLoc.isValid()) 3642b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis type = S.Context.getAttributedType(AttributedType::attr_objc_ownership, 3643f85e193739c953358c865005855253af4f68a497John McCall origType, type); 3644f85e193739c953358c865005855253af4f68a497John McCall 36459f084a3166b684573ba49df28fc5792bc37d92e1John McCall // Forbid __weak if the runtime doesn't support it. 3646f85e193739c953358c865005855253af4f68a497John McCall if (lifetime == Qualifiers::OCL_Weak && 36470a7dd788dbef975f35f273c7ab913f480f7edd60John McCall !S.getLangOpts().ObjCARCWeak && !NonObjCPointer) { 3648f85e193739c953358c865005855253af4f68a497John McCall 3649f85e193739c953358c865005855253af4f68a497John McCall // Actually, delay this until we know what we're parsing. 3650f85e193739c953358c865005855253af4f68a497John McCall if (S.DelayedDiagnostics.shouldDelayDiagnostics()) { 3651f85e193739c953358c865005855253af4f68a497John McCall S.DelayedDiagnostics.add( 3652440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis sema::DelayedDiagnostic::makeForbiddenType( 3653440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis S.getSourceManager().getExpansionLoc(AttrLoc), 3654f85e193739c953358c865005855253af4f68a497John McCall diag::err_arc_weak_no_runtime, type, /*ignored*/ 0)); 3655f85e193739c953358c865005855253af4f68a497John McCall } else { 3656440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis S.Diag(AttrLoc, diag::err_arc_weak_no_runtime); 3657f85e193739c953358c865005855253af4f68a497John McCall } 3658f85e193739c953358c865005855253af4f68a497John McCall 3659f85e193739c953358c865005855253af4f68a497John McCall attr.setInvalid(); 3660f85e193739c953358c865005855253af4f68a497John McCall return true; 3661f85e193739c953358c865005855253af4f68a497John McCall } 366291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 366391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // Forbid __weak for class objects marked as 3664742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian // objc_arc_weak_reference_unavailable 3665742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian if (lifetime == Qualifiers::OCL_Weak) { 3666742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian QualType T = type; 3667742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian while (const PointerType *ptr = T->getAs<PointerType>()) 3668742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian T = ptr->getPointeeType(); 3669742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian if (const ObjCObjectPointerType *ObjT = T->getAs<ObjCObjectPointerType>()) { 36704e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith if (ObjCInterfaceDecl *Class = ObjT->getInterfaceDecl()) { 36714e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith if (Class->isArcWeakrefUnavailable()) { 36724e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith S.Diag(AttrLoc, diag::err_arc_unsupported_weak_class); 36734e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith S.Diag(ObjT->getInterfaceDecl()->getLocation(), 36744e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith diag::note_class_declared); 36754e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith } 3676742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian } 3677742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian } 3678742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian } 367991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 3680f85e193739c953358c865005855253af4f68a497John McCall return true; 3681f85e193739c953358c865005855253af4f68a497John McCall} 3682f85e193739c953358c865005855253af4f68a497John McCall 3683711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// handleObjCGCTypeAttr - Process the __attribute__((objc_gc)) type 3684711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// attribute on the specified type. Returns true to indicate that 3685711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// the attribute was handled, false to indicate that the type does 3686711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// not permit the attribute. 3687711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleObjCGCTypeAttr(TypeProcessingState &state, 3688711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 3689711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &type) { 3690711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Sema &S = state.getSema(); 3691711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 3692711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Delay if this isn't some kind of pointer. 3693711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!type->isPointerType() && 3694711c52bb20d0c69063b52a99826fb7d2835501f1John McCall !type->isObjCObjectPointerType() && 3695711c52bb20d0c69063b52a99826fb7d2835501f1John McCall !type->isBlockPointerType()) 3696711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return false; 3697711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 3698711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (type.getObjCGCAttr() != Qualifiers::GCNone) { 3699711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::err_attribute_multiple_objc_gc); 3700711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 3701711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3702d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian } 37031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3704d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian // Check the attribute arguments. 3705711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!attr.getParameterName()) { 3706711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::err_attribute_argument_n_not_string) 3707ba372b85524f712e5b97a176f6ce0197d365835dFariborz Jahanian << "objc_gc" << 1; 3708711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 3709711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3710ba372b85524f712e5b97a176f6ce0197d365835dFariborz Jahanian } 37110953e767ff7817f97b3ab20896b229891eeff45bJohn McCall Qualifiers::GC GCAttr; 3712711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (attr.getNumArgs() != 0) { 3713711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 3714711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 3715711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3716d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian } 3717711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (attr.getParameterName()->isStr("weak")) 37180953e767ff7817f97b3ab20896b229891eeff45bJohn McCall GCAttr = Qualifiers::Weak; 3719711c52bb20d0c69063b52a99826fb7d2835501f1John McCall else if (attr.getParameterName()->isStr("strong")) 37200953e767ff7817f97b3ab20896b229891eeff45bJohn McCall GCAttr = Qualifiers::Strong; 3721d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian else { 3722711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::warn_attribute_type_not_supported) 3723711c52bb20d0c69063b52a99826fb7d2835501f1John McCall << "objc_gc" << attr.getParameterName(); 3724711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 3725711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3726d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian } 37271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 372814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall QualType origType = type; 372914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall type = S.Context.getObjCGCQualType(origType, GCAttr); 373014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 373114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall // Make an attributed type to preserve the source information. 373214aa2175416f79ef17811282afbf425f87d54ebfJohn McCall if (attr.getLoc().isValid()) 373314aa2175416f79ef17811282afbf425f87d54ebfJohn McCall type = S.Context.getAttributedType(AttributedType::attr_objc_gc, 373414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall origType, type); 373514aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 3736711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3737d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian} 3738d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian 3739e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCallnamespace { 3740e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// A helper class to unwrap a type down to a function for the 3741e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// purposes of applying attributes there. 3742e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// 3743e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// Use: 3744e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// FunctionTypeUnwrapper unwrapped(SemaRef, T); 3745e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// if (unwrapped.isFunctionType()) { 3746e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// const FunctionType *fn = unwrapped.get(); 3747e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// // change fn somehow 3748e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// T = unwrapped.wrap(fn); 3749e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// } 3750e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall struct FunctionTypeUnwrapper { 3751e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall enum WrapKind { 3752e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Desugar, 3753e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Parens, 3754e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Pointer, 3755e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall BlockPointer, 3756e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Reference, 3757e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall MemberPointer 3758e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall }; 3759e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3760e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType Original; 3761e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall const FunctionType *Fn; 37625f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<unsigned char /*WrapKind*/, 8> Stack; 3763e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3764e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall FunctionTypeUnwrapper(Sema &S, QualType T) : Original(T) { 3765e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall while (true) { 3766e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall const Type *Ty = T.getTypePtr(); 3767e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall if (isa<FunctionType>(Ty)) { 3768e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Fn = cast<FunctionType>(Ty); 3769e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return; 3770e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } else if (isa<ParenType>(Ty)) { 3771e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall T = cast<ParenType>(Ty)->getInnerType(); 3772e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Stack.push_back(Parens); 3773e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } else if (isa<PointerType>(Ty)) { 3774e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall T = cast<PointerType>(Ty)->getPointeeType(); 3775e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Stack.push_back(Pointer); 3776e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } else if (isa<BlockPointerType>(Ty)) { 3777e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall T = cast<BlockPointerType>(Ty)->getPointeeType(); 3778e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Stack.push_back(BlockPointer); 3779e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } else if (isa<MemberPointerType>(Ty)) { 3780e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall T = cast<MemberPointerType>(Ty)->getPointeeType(); 3781e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Stack.push_back(MemberPointer); 3782e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } else if (isa<ReferenceType>(Ty)) { 3783e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall T = cast<ReferenceType>(Ty)->getPointeeType(); 3784e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Stack.push_back(Reference); 3785e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } else { 3786e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall const Type *DTy = Ty->getUnqualifiedDesugaredType(); 3787e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall if (Ty == DTy) { 3788e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Fn = 0; 3789e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return; 3790e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 3791e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3792e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall T = QualType(DTy, 0); 3793e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Stack.push_back(Desugar); 3794e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 3795e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 3796e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 3797e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3798e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall bool isFunctionType() const { return (Fn != 0); } 3799e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall const FunctionType *get() const { return Fn; } 3800e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3801e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType wrap(Sema &S, const FunctionType *New) { 3802e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // If T wasn't modified from the unwrapped type, do nothing. 3803e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall if (New == get()) return Original; 3804e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3805e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Fn = New; 3806e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return wrap(S.Context, Original, 0); 3807e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 3808e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3809e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall private: 3810e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType wrap(ASTContext &C, QualType Old, unsigned I) { 3811e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall if (I == Stack.size()) 3812e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return C.getQualifiedType(Fn, Old.getQualifiers()); 3813e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3814e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // Build up the inner type, applying the qualifiers from the old 3815e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // type to the new type. 3816e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall SplitQualType SplitOld = Old.split(); 3817e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3818e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // As a special case, tail-recurse if there are no qualifiers. 3819200fa53fd420aa8369586f569dbece04930ad6a3John McCall if (SplitOld.Quals.empty()) 3820200fa53fd420aa8369586f569dbece04930ad6a3John McCall return wrap(C, SplitOld.Ty, I); 3821200fa53fd420aa8369586f569dbece04930ad6a3John McCall return C.getQualifiedType(wrap(C, SplitOld.Ty, I), SplitOld.Quals); 3822e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 3823e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3824e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType wrap(ASTContext &C, const Type *Old, unsigned I) { 3825e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall if (I == Stack.size()) return QualType(Fn, 0); 3826e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3827e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall switch (static_cast<WrapKind>(Stack[I++])) { 3828e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall case Desugar: 3829e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // This is the point at which we potentially lose source 3830e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // information. 3831e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return wrap(C, Old->getUnqualifiedDesugaredType(), I); 3832e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3833e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall case Parens: { 3834e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType New = wrap(C, cast<ParenType>(Old)->getInnerType(), I); 3835e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return C.getParenType(New); 3836e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 3837e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3838e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall case Pointer: { 3839e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType New = wrap(C, cast<PointerType>(Old)->getPointeeType(), I); 3840e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return C.getPointerType(New); 3841e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 3842e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3843e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall case BlockPointer: { 3844e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType New = wrap(C, cast<BlockPointerType>(Old)->getPointeeType(),I); 3845e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return C.getBlockPointerType(New); 3846e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 3847e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3848e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall case MemberPointer: { 3849e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall const MemberPointerType *OldMPT = cast<MemberPointerType>(Old); 3850e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType New = wrap(C, OldMPT->getPointeeType(), I); 3851e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return C.getMemberPointerType(New, OldMPT->getClass()); 3852e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 3853e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3854e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall case Reference: { 3855e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall const ReferenceType *OldRef = cast<ReferenceType>(Old); 3856e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType New = wrap(C, OldRef->getPointeeType(), I); 3857e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall if (isa<LValueReferenceType>(OldRef)) 3858e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return C.getLValueReferenceType(New, OldRef->isSpelledAsLValue()); 3859e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall else 3860e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return C.getRValueReferenceType(New); 3861e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 3862e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 3863e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3864e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall llvm_unreachable("unknown wrapping kind"); 3865e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 3866e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall }; 3867e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall} 3868e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3869711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Process an individual function attribute. Returns true to 3870711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// indicate that the attribute was handled, false if it wasn't. 3871711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleFunctionTypeAttr(TypeProcessingState &state, 3872711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 3873711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &type) { 3874711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Sema &S = state.getSema(); 3875e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3876711c52bb20d0c69063b52a99826fb7d2835501f1John McCall FunctionTypeUnwrapper unwrapped(S, type); 38772455636163fdd18581d7fdae816433f886d88213Mike Stump 38788e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr.getKind() == AttributeList::AT_NoReturn) { 3879711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (S.CheckNoReturnAttr(attr)) 388004a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall return true; 3881e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3882e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // Delay if this is not a function type. 3883711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!unwrapped.isFunctionType()) 3884711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return false; 3885425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola 3886425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola // Otherwise we can process right away. 3887711c52bb20d0c69063b52a99826fb7d2835501f1John McCall FunctionType::ExtInfo EI = unwrapped.get()->getExtInfo().withNoReturn(true); 3888711c52bb20d0c69063b52a99826fb7d2835501f1John McCall type = unwrapped.wrap(S, S.Context.adjustFunctionType(unwrapped.get(), EI)); 3889711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3890711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 3891425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola 3892f85e193739c953358c865005855253af4f68a497John McCall // ns_returns_retained is not always a type attribute, but if we got 3893f85e193739c953358c865005855253af4f68a497John McCall // here, we're treating it as one right now. 38948e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr.getKind() == AttributeList::AT_NSReturnsRetained) { 38954e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie assert(S.getLangOpts().ObjCAutoRefCount && 3896f85e193739c953358c865005855253af4f68a497John McCall "ns_returns_retained treated as type attribute in non-ARC"); 3897f85e193739c953358c865005855253af4f68a497John McCall if (attr.getNumArgs()) return true; 3898f85e193739c953358c865005855253af4f68a497John McCall 3899f85e193739c953358c865005855253af4f68a497John McCall // Delay if this is not a function type. 3900f85e193739c953358c865005855253af4f68a497John McCall if (!unwrapped.isFunctionType()) 3901f85e193739c953358c865005855253af4f68a497John McCall return false; 3902f85e193739c953358c865005855253af4f68a497John McCall 3903f85e193739c953358c865005855253af4f68a497John McCall FunctionType::ExtInfo EI 3904f85e193739c953358c865005855253af4f68a497John McCall = unwrapped.get()->getExtInfo().withProducesResult(true); 3905f85e193739c953358c865005855253af4f68a497John McCall type = unwrapped.wrap(S, S.Context.adjustFunctionType(unwrapped.get(), EI)); 3906f85e193739c953358c865005855253af4f68a497John McCall return true; 3907f85e193739c953358c865005855253af4f68a497John McCall } 3908f85e193739c953358c865005855253af4f68a497John McCall 39098e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr.getKind() == AttributeList::AT_Regparm) { 3910711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned value; 3911711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (S.CheckRegparmAttr(attr, value)) 3912711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 39131e030eb1194763b42c1752723be23b1515f48981John McCall 3914711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Delay if this is not a function type. 3915711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!unwrapped.isFunctionType()) 3916008df5dce3938456ae7ea2e7ab3b2d12391ebf3eJohn McCall return false; 39171e030eb1194763b42c1752723be23b1515f48981John McCall 3918ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis // Diagnose regparm with fastcall. 3919ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis const FunctionType *fn = unwrapped.get(); 3920ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis CallingConv CC = fn->getCallConv(); 3921ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis if (CC == CC_X86FastCall) { 3922ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis S.Diag(attr.getLoc(), diag::err_attributes_are_not_compatible) 3923ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis << FunctionType::getNameForCallConv(CC) 3924ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis << "regparm"; 3925ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis attr.setInvalid(); 3926ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis return true; 3927ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis } 3928ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis 392991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier FunctionType::ExtInfo EI = 3930711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unwrapped.get()->getExtInfo().withRegParm(value); 3931711c52bb20d0c69063b52a99826fb7d2835501f1John McCall type = unwrapped.wrap(S, S.Context.adjustFunctionType(unwrapped.get(), EI)); 3932711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3933425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola } 3934425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola 393582bfa19fe3be324b13fdbcda46304b52c500f0d4Aaron Ballman // Delay if the type didn't work out to a function. 393682bfa19fe3be324b13fdbcda46304b52c500f0d4Aaron Ballman if (!unwrapped.isFunctionType()) return false; 393782bfa19fe3be324b13fdbcda46304b52c500f0d4Aaron Ballman 393804a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall // Otherwise, a calling convention. 3939711c52bb20d0c69063b52a99826fb7d2835501f1John McCall CallingConv CC; 3940711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (S.CheckCallingConvAttr(attr, CC)) 3941711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3942f82b4e85b1219295cad4b5851b035575bc293010John McCall 3943711c52bb20d0c69063b52a99826fb7d2835501f1John McCall const FunctionType *fn = unwrapped.get(); 3944711c52bb20d0c69063b52a99826fb7d2835501f1John McCall CallingConv CCOld = fn->getCallConv(); 3945064f7db69def9299f5f4d9a32114afc10b6a6420Charles Davis if (S.Context.getCanonicalCallConv(CC) == 3946e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara S.Context.getCanonicalCallConv(CCOld)) { 3947ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis FunctionType::ExtInfo EI= unwrapped.get()->getExtInfo().withCallingConv(CC); 3948ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis type = unwrapped.wrap(S, S.Context.adjustFunctionType(unwrapped.get(), EI)); 3949711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3950e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara } 395104a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 39528e68f1c8a2919ea83c2053731d6011074f1062e1Roman Divacky if (CCOld != (S.LangOpts.MRTD ? CC_X86StdCall : CC_Default)) { 395304a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall // Should we diagnose reapplications of the same convention? 3954711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::err_attributes_are_not_compatible) 395504a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall << FunctionType::getNameForCallConv(CC) 395604a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall << FunctionType::getNameForCallConv(CCOld); 3957711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 3958711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 395904a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall } 396004a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 396104a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall // Diagnose the use of X86 fastcall on varargs or unprototyped functions. 396204a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall if (CC == CC_X86FastCall) { 3963711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (isa<FunctionNoProtoType>(fn)) { 3964711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::err_cconv_knr) 396504a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall << FunctionType::getNameForCallConv(CC); 3966711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 3967711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 396804a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall } 396904a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 3970711c52bb20d0c69063b52a99826fb7d2835501f1John McCall const FunctionProtoType *FnP = cast<FunctionProtoType>(fn); 397104a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall if (FnP->isVariadic()) { 3972711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::err_cconv_varargs) 397304a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall << FunctionType::getNameForCallConv(CC); 3974711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 3975711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 397604a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall } 3977ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis 3978ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis // Also diagnose fastcall with regparm. 3979a49218e17bcbb1acde0245773173e2c0c42f4f19Eli Friedman if (fn->getHasRegParm()) { 3980ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis S.Diag(attr.getLoc(), diag::err_attributes_are_not_compatible) 3981ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis << "regparm" 3982ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis << FunctionType::getNameForCallConv(CC); 3983ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis attr.setInvalid(); 3984ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis return true; 3985ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis } 398604a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall } 3987f82b4e85b1219295cad4b5851b035575bc293010John McCall 3988711c52bb20d0c69063b52a99826fb7d2835501f1John McCall FunctionType::ExtInfo EI = unwrapped.get()->getExtInfo().withCallingConv(CC); 3989711c52bb20d0c69063b52a99826fb7d2835501f1John McCall type = unwrapped.wrap(S, S.Context.adjustFunctionType(unwrapped.get(), EI)); 3990711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3991f82b4e85b1219295cad4b5851b035575bc293010John McCall} 3992f82b4e85b1219295cad4b5851b035575bc293010John McCall 3993207f4d8543529221932af82836016a2ef066c917Peter Collingbourne/// Handle OpenCL image access qualifiers: read_only, write_only, read_write 3994207f4d8543529221932af82836016a2ef066c917Peter Collingbournestatic void HandleOpenCLImageAccessAttribute(QualType& CurType, 3995207f4d8543529221932af82836016a2ef066c917Peter Collingbourne const AttributeList &Attr, 3996207f4d8543529221932af82836016a2ef066c917Peter Collingbourne Sema &S) { 3997207f4d8543529221932af82836016a2ef066c917Peter Collingbourne // Check the attribute arguments. 3998207f4d8543529221932af82836016a2ef066c917Peter Collingbourne if (Attr.getNumArgs() != 1) { 3999207f4d8543529221932af82836016a2ef066c917Peter Collingbourne S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 4000207f4d8543529221932af82836016a2ef066c917Peter Collingbourne Attr.setInvalid(); 4001207f4d8543529221932af82836016a2ef066c917Peter Collingbourne return; 4002207f4d8543529221932af82836016a2ef066c917Peter Collingbourne } 4003207f4d8543529221932af82836016a2ef066c917Peter Collingbourne Expr *sizeExpr = static_cast<Expr *>(Attr.getArg(0)); 4004207f4d8543529221932af82836016a2ef066c917Peter Collingbourne llvm::APSInt arg(32); 4005207f4d8543529221932af82836016a2ef066c917Peter Collingbourne if (sizeExpr->isTypeDependent() || sizeExpr->isValueDependent() || 4006207f4d8543529221932af82836016a2ef066c917Peter Collingbourne !sizeExpr->isIntegerConstantExpr(arg, S.Context)) { 4007207f4d8543529221932af82836016a2ef066c917Peter Collingbourne S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 4008207f4d8543529221932af82836016a2ef066c917Peter Collingbourne << "opencl_image_access" << sizeExpr->getSourceRange(); 4009207f4d8543529221932af82836016a2ef066c917Peter Collingbourne Attr.setInvalid(); 4010207f4d8543529221932af82836016a2ef066c917Peter Collingbourne return; 4011207f4d8543529221932af82836016a2ef066c917Peter Collingbourne } 4012207f4d8543529221932af82836016a2ef066c917Peter Collingbourne unsigned iarg = static_cast<unsigned>(arg.getZExtValue()); 4013207f4d8543529221932af82836016a2ef066c917Peter Collingbourne switch (iarg) { 4014207f4d8543529221932af82836016a2ef066c917Peter Collingbourne case CLIA_read_only: 4015207f4d8543529221932af82836016a2ef066c917Peter Collingbourne case CLIA_write_only: 4016207f4d8543529221932af82836016a2ef066c917Peter Collingbourne case CLIA_read_write: 4017207f4d8543529221932af82836016a2ef066c917Peter Collingbourne // Implemented in a separate patch 4018207f4d8543529221932af82836016a2ef066c917Peter Collingbourne break; 4019207f4d8543529221932af82836016a2ef066c917Peter Collingbourne default: 4020207f4d8543529221932af82836016a2ef066c917Peter Collingbourne // Implemented in a separate patch 4021207f4d8543529221932af82836016a2ef066c917Peter Collingbourne S.Diag(Attr.getLoc(), diag::err_attribute_invalid_size) 4022207f4d8543529221932af82836016a2ef066c917Peter Collingbourne << sizeExpr->getSourceRange(); 4023207f4d8543529221932af82836016a2ef066c917Peter Collingbourne Attr.setInvalid(); 4024207f4d8543529221932af82836016a2ef066c917Peter Collingbourne break; 4025207f4d8543529221932af82836016a2ef066c917Peter Collingbourne } 4026207f4d8543529221932af82836016a2ef066c917Peter Collingbourne} 4027207f4d8543529221932af82836016a2ef066c917Peter Collingbourne 40286e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// HandleVectorSizeAttribute - this attribute is only applicable to integral 40296e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// and float scalars, although arrays, pointers, and function return values are 40306e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// allowed in conjunction with this construct. Aggregates with this attribute 40316e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// are invalid, even if they are of the same size as a corresponding scalar. 40326e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// The raw attribute should contain precisely 1 argument, the vector size for 40336e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// the variable, measured in bytes. If curType and rawAttr are well formed, 40346e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// this routine will return a new vector type. 4035788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattnerstatic void HandleVectorSizeAttr(QualType& CurType, const AttributeList &Attr, 4036788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner Sema &S) { 403756affbcaeff9a01caa70b2a237f7e6ac31c8ded6Bob Wilson // Check the attribute arguments. 40386e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson if (Attr.getNumArgs() != 1) { 40396e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 4040e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 40416e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 40426e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 40436e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson Expr *sizeExpr = static_cast<Expr *>(Attr.getArg(0)); 40446e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson llvm::APSInt vecSize(32); 4045ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (sizeExpr->isTypeDependent() || sizeExpr->isValueDependent() || 4046ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !sizeExpr->isIntegerConstantExpr(vecSize, S.Context)) { 40476e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 40486e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson << "vector_size" << sizeExpr->getSourceRange(); 4049e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 40506e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 40516e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 40526e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson // the base type must be integer or float, and can't already be a vector. 4053f60946222721d9ba3c059563935c17b84703187aDouglas Gregor if (!CurType->isIntegerType() && !CurType->isRealFloatingType()) { 40546e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type) << CurType; 4055e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 40566e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 40576e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 40586e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson unsigned typeSize = static_cast<unsigned>(S.Context.getTypeSize(CurType)); 40596e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson // vecSize is specified in bytes - convert to bits. 40606e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue() * 8); 40616e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson 40626e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson // the vector size needs to be an integral multiple of the type size. 40636e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson if (vectorSize % typeSize) { 40646e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson S.Diag(Attr.getLoc(), diag::err_attribute_invalid_size) 40656e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson << sizeExpr->getSourceRange(); 4066e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 40676e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 40686e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 40696e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson if (vectorSize == 0) { 40706e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson S.Diag(Attr.getLoc(), diag::err_attribute_zero_size) 40716e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson << sizeExpr->getSourceRange(); 4072e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 40736e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 40746e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 40756e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson 40766e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson // Success! Instantiate the vector type, the number of elements is > 0, and 40776e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson // not required to be a power of 2, unlike GCC. 4078788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner CurType = S.Context.getVectorType(CurType, vectorSize/typeSize, 4079e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson VectorType::GenericVector); 40806e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson} 40816e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson 40824ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor/// \brief Process the OpenCL-like ext_vector_type attribute when it occurs on 40834ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor/// a type. 408491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosierstatic void HandleExtVectorTypeAttr(QualType &CurType, 408591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier const AttributeList &Attr, 40864ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor Sema &S) { 40874ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor Expr *sizeExpr; 408891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 40894ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor // Special case where the argument is a template id. 40904ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor if (Attr.getParameterName()) { 40914ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor CXXScopeSpec SS; 4092e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara SourceLocation TemplateKWLoc; 40934ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor UnqualifiedId id; 40944ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor id.setIdentifier(Attr.getParameterName(), Attr.getLoc()); 4095e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 4096e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara ExprResult Size = S.ActOnIdExpression(S.getCurScope(), SS, TemplateKWLoc, 4097e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara id, false, false); 40984ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor if (Size.isInvalid()) 40994ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor return; 410091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 41014ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor sizeExpr = Size.get(); 41024ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor } else { 41034ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor // check the attribute arguments. 41044ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor if (Attr.getNumArgs() != 1) { 41054ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 41064ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor return; 41074ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor } 41084ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor sizeExpr = Attr.getArg(0); 41094ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor } 411091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 41114ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor // Create the vector type. 41124ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor QualType T = S.BuildExtVectorType(CurType, sizeExpr, Attr.getLoc()); 41134ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor if (!T.isNull()) 41144ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor CurType = T; 41154ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor} 41164ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor 41174211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// HandleNeonVectorTypeAttr - The "neon_vector_type" and 41184211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// "neon_polyvector_type" attributes are used to create vector types that 41194211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// are mangled according to ARM's ABI. Otherwise, these types are identical 41204211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// to those created with the "vector_size" attribute. Unlike "vector_size" 41214211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// the argument to these Neon attributes is the number of vector elements, 41224211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// not the vector size in bytes. The vector width and element type must 41234211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// match one of the standard Neon vector types. 41244211bb68cff1f310be280f66a59520548ef99d8fBob Wilsonstatic void HandleNeonVectorTypeAttr(QualType& CurType, 41254211bb68cff1f310be280f66a59520548ef99d8fBob Wilson const AttributeList &Attr, Sema &S, 41264211bb68cff1f310be280f66a59520548ef99d8fBob Wilson VectorType::VectorKind VecKind, 41274211bb68cff1f310be280f66a59520548ef99d8fBob Wilson const char *AttrName) { 41284211bb68cff1f310be280f66a59520548ef99d8fBob Wilson // Check the attribute arguments. 41294211bb68cff1f310be280f66a59520548ef99d8fBob Wilson if (Attr.getNumArgs() != 1) { 41304211bb68cff1f310be280f66a59520548ef99d8fBob Wilson S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 41314211bb68cff1f310be280f66a59520548ef99d8fBob Wilson Attr.setInvalid(); 41324211bb68cff1f310be280f66a59520548ef99d8fBob Wilson return; 41334211bb68cff1f310be280f66a59520548ef99d8fBob Wilson } 41344211bb68cff1f310be280f66a59520548ef99d8fBob Wilson // The number of elements must be an ICE. 41354211bb68cff1f310be280f66a59520548ef99d8fBob Wilson Expr *numEltsExpr = static_cast<Expr *>(Attr.getArg(0)); 41364211bb68cff1f310be280f66a59520548ef99d8fBob Wilson llvm::APSInt numEltsInt(32); 41374211bb68cff1f310be280f66a59520548ef99d8fBob Wilson if (numEltsExpr->isTypeDependent() || numEltsExpr->isValueDependent() || 41384211bb68cff1f310be280f66a59520548ef99d8fBob Wilson !numEltsExpr->isIntegerConstantExpr(numEltsInt, S.Context)) { 41394211bb68cff1f310be280f66a59520548ef99d8fBob Wilson S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 41404211bb68cff1f310be280f66a59520548ef99d8fBob Wilson << AttrName << numEltsExpr->getSourceRange(); 41414211bb68cff1f310be280f66a59520548ef99d8fBob Wilson Attr.setInvalid(); 41424211bb68cff1f310be280f66a59520548ef99d8fBob Wilson return; 41434211bb68cff1f310be280f66a59520548ef99d8fBob Wilson } 41444211bb68cff1f310be280f66a59520548ef99d8fBob Wilson // Only certain element types are supported for Neon vectors. 41454211bb68cff1f310be280f66a59520548ef99d8fBob Wilson const BuiltinType* BTy = CurType->getAs<BuiltinType>(); 41464211bb68cff1f310be280f66a59520548ef99d8fBob Wilson if (!BTy || 41474211bb68cff1f310be280f66a59520548ef99d8fBob Wilson (VecKind == VectorType::NeonPolyVector && 41484211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::SChar && 41494211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::Short) || 41504211bb68cff1f310be280f66a59520548ef99d8fBob Wilson (BTy->getKind() != BuiltinType::SChar && 41514211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::UChar && 41524211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::Short && 41534211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::UShort && 41544211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::Int && 41554211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::UInt && 41564211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::LongLong && 41574211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::ULongLong && 41584211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::Float)) { 41594211bb68cff1f310be280f66a59520548ef99d8fBob Wilson S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type) <<CurType; 41604211bb68cff1f310be280f66a59520548ef99d8fBob Wilson Attr.setInvalid(); 41614211bb68cff1f310be280f66a59520548ef99d8fBob Wilson return; 41624211bb68cff1f310be280f66a59520548ef99d8fBob Wilson } 41634211bb68cff1f310be280f66a59520548ef99d8fBob Wilson // The total size of the vector must be 64 or 128 bits. 41644211bb68cff1f310be280f66a59520548ef99d8fBob Wilson unsigned typeSize = static_cast<unsigned>(S.Context.getTypeSize(CurType)); 41654211bb68cff1f310be280f66a59520548ef99d8fBob Wilson unsigned numElts = static_cast<unsigned>(numEltsInt.getZExtValue()); 41664211bb68cff1f310be280f66a59520548ef99d8fBob Wilson unsigned vecSize = typeSize * numElts; 41674211bb68cff1f310be280f66a59520548ef99d8fBob Wilson if (vecSize != 64 && vecSize != 128) { 41684211bb68cff1f310be280f66a59520548ef99d8fBob Wilson S.Diag(Attr.getLoc(), diag::err_attribute_bad_neon_vector_size) << CurType; 41694211bb68cff1f310be280f66a59520548ef99d8fBob Wilson Attr.setInvalid(); 41704211bb68cff1f310be280f66a59520548ef99d8fBob Wilson return; 41714211bb68cff1f310be280f66a59520548ef99d8fBob Wilson } 41724211bb68cff1f310be280f66a59520548ef99d8fBob Wilson 41734211bb68cff1f310be280f66a59520548ef99d8fBob Wilson CurType = S.Context.getVectorType(CurType, numElts, VecKind); 41744211bb68cff1f310be280f66a59520548ef99d8fBob Wilson} 41754211bb68cff1f310be280f66a59520548ef99d8fBob Wilson 4176711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void processTypeAttrs(TypeProcessingState &state, QualType &type, 4177f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith TypeAttrLocation TAL, AttributeList *attrs) { 4178c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // Scan through and apply attributes to this type where it makes sense. Some 4179c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // attributes (such as __address_space__, __vector_size__, etc) apply to the 4180c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // type, but others can be present in the type specifiers even though they 4181c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // apply to the decl. Here we apply type attributes and ignore the rest. 4182711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 4183711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *next; 4184711c52bb20d0c69063b52a99826fb7d2835501f1John McCall do { 4185711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr = *attrs; 4186711c52bb20d0c69063b52a99826fb7d2835501f1John McCall next = attr.getNext(); 4187711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 4188e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara // Skip attributes that were marked to be invalid. 4189711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (attr.isInvalid()) 4190e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara continue; 4191e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara 4192f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith // [[gnu::...]] attributes are treated as declaration attributes, so may 4193f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith // not appertain to a DeclaratorChunk, even if we handle them as type 4194f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith // attributes. 4195f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith // FIXME: All other C++11 type attributes may *only* appertain to a type, 4196f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith // and should only be considered here if they appertain to a 4197f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith // DeclaratorChunk. 4198f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith if (attr.isCXX11Attribute() && TAL == TAL_DeclChunk && 4199f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith attr.getScopeName() && attr.getScopeName()->isStr("gnu")) { 4200f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith state.getSema().Diag(attr.getLoc(), 4201f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith diag::warn_cxx11_gnu_attribute_on_type) 4202f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith << attr.getName(); 4203f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith continue; 4204f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith } 4205f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith 4206b1f1b267351be74013f966f4834cde1eddbe0233Abramo Bagnara // If this is an attribute we can handle, do so now, 4207b1f1b267351be74013f966f4834cde1eddbe0233Abramo Bagnara // otherwise, add it to the FnAttrs list for rechaining. 4208711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (attr.getKind()) { 4209c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner default: break; 421004a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 42118e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_MayAlias: 4212682eae243ae3d96fe3dc302091034e08c414db10Chandler Carruth // FIXME: This attribute needs to actually be handled, but if we ignore 4213682eae243ae3d96fe3dc302091034e08c414db10Chandler Carruth // it it breaks large amounts of Linux software. 4214682eae243ae3d96fe3dc302091034e08c414db10Chandler Carruth attr.setUsedAsTypeAttr(); 4215682eae243ae3d96fe3dc302091034e08c414db10Chandler Carruth break; 42168e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_AddressSpace: 4217711c52bb20d0c69063b52a99826fb7d2835501f1John McCall HandleAddressSpaceTypeAttribute(type, attr, state.getSema()); 4218e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 4219c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner break; 4220711c52bb20d0c69063b52a99826fb7d2835501f1John McCall OBJC_POINTER_TYPE_ATTRS_CASELIST: 4221711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!handleObjCPointerTypeAttr(state, attr, type)) 4222711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeObjCPointerTypeAttr(state, attr, type); 4223e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 4224d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian break; 42258e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_VectorSize: 4226711c52bb20d0c69063b52a99826fb7d2835501f1John McCall HandleVectorSizeAttr(type, attr, state.getSema()); 4227e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 4228f82b4e85b1219295cad4b5851b035575bc293010John McCall break; 42298e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ExtVectorType: 4230a4fa9008988985f9cf01712a99ddd923aea278a0Richard Smith HandleExtVectorTypeAttr(type, attr, state.getSema()); 4231e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 42324ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor break; 42338e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_NeonVectorType: 4234711c52bb20d0c69063b52a99826fb7d2835501f1John McCall HandleNeonVectorTypeAttr(type, attr, state.getSema(), 4235711c52bb20d0c69063b52a99826fb7d2835501f1John McCall VectorType::NeonVector, "neon_vector_type"); 4236e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 42374211bb68cff1f310be280f66a59520548ef99d8fBob Wilson break; 42388e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_NeonPolyVectorType: 4239711c52bb20d0c69063b52a99826fb7d2835501f1John McCall HandleNeonVectorTypeAttr(type, attr, state.getSema(), 4240711c52bb20d0c69063b52a99826fb7d2835501f1John McCall VectorType::NeonPolyVector, 42414211bb68cff1f310be280f66a59520548ef99d8fBob Wilson "neon_polyvector_type"); 4242e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 42434211bb68cff1f310be280f66a59520548ef99d8fBob Wilson break; 42448e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_OpenCLImageAccess: 4245207f4d8543529221932af82836016a2ef066c917Peter Collingbourne HandleOpenCLImageAccessAttribute(type, attr, state.getSema()); 4246e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 4247207f4d8543529221932af82836016a2ef066c917Peter Collingbourne break; 4248207f4d8543529221932af82836016a2ef066c917Peter Collingbourne 42498e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_Win64: 42508e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_Ptr32: 42518e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_Ptr64: 4252c052dbb2d8fe0e23e90d81236aab0f864f712b45John McCall // FIXME: don't ignore these 4253c052dbb2d8fe0e23e90d81236aab0f864f712b45John McCall attr.setUsedAsTypeAttr(); 4254c052dbb2d8fe0e23e90d81236aab0f864f712b45John McCall break; 4255c052dbb2d8fe0e23e90d81236aab0f864f712b45John McCall 42568e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_NSReturnsRetained: 42574e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!state.getSema().getLangOpts().ObjCAutoRefCount) 425891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier break; 4259f85e193739c953358c865005855253af4f68a497John McCall // fallthrough into the function attrs 4260f85e193739c953358c865005855253af4f68a497John McCall 4261711c52bb20d0c69063b52a99826fb7d2835501f1John McCall FUNCTION_TYPE_ATTRS_CASELIST: 4262e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 4263e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall 4264711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Never process function type attributes as part of the 4265711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // declaration-specifiers. 4266f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith if (TAL == TAL_DeclSpec) 4267711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeFunctionTypeAttrFromDeclSpec(state, attr, type); 4268711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 4269711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Otherwise, handle the possible delays. 4270711c52bb20d0c69063b52a99826fb7d2835501f1John McCall else if (!handleFunctionTypeAttr(state, attr, type)) 4271711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeFunctionTypeAttr(state, attr, type); 42726e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson break; 4273c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner } 4274711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } while ((attrs = next)); 4275232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner} 4276232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner 4277e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// \brief Ensure that the type of the given expression is complete. 4278e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// 4279e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// This routine checks whether the expression \p E has a complete type. If the 4280e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// expression refers to an instantiable construct, that instantiation is 4281e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// performed as needed to complete its type. Furthermore 4282e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// Sema::RequireCompleteType is called for the expression's type (or in the 4283e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// case of a reference type, the referred-to type). 4284e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// 4285e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// \param E The expression whose type is required to be complete. 4286d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor/// \param Diagnoser The object that will emit a diagnostic if the type is 4287d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor/// incomplete. 4288e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// 4289e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// \returns \c true if the type of \p E is incomplete and diagnosed, \c false 4290e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// otherwise. 4291f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregorbool Sema::RequireCompleteExprType(Expr *E, TypeDiagnoser &Diagnoser){ 4292e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth QualType T = E->getType(); 4293e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 4294e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // Fast path the case where the type is already complete. 4295e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth if (!T->isIncompleteType()) 4296e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth return false; 4297e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 4298e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // Incomplete array types may be completed by the initializer attached to 4299e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // their definitions. For static data members of class templates we need to 4300e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // instantiate the definition to get this initializer and complete the type. 4301e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth if (T->isIncompleteArrayType()) { 4302e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParens())) { 4303e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth if (VarDecl *Var = dyn_cast<VarDecl>(DRE->getDecl())) { 4304e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth if (Var->isStaticDataMember() && 4305e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth Var->getInstantiatedFromStaticDataMember()) { 430691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 430736f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor MemberSpecializationInfo *MSInfo = Var->getMemberSpecializationInfo(); 430836f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor assert(MSInfo && "Missing member specialization information?"); 430936f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor if (MSInfo->getTemplateSpecializationKind() 431036f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor != TSK_ExplicitSpecialization) { 431136f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor // If we don't already have a point of instantiation, this is it. 431236f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor if (MSInfo->getPointOfInstantiation().isInvalid()) { 431336f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor MSInfo->setPointOfInstantiation(E->getLocStart()); 431491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 431591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // This is a modification of an existing AST node. Notify 431636f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor // listeners. 431736f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor if (ASTMutationListener *L = getASTMutationListener()) 431836f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor L->StaticDataMemberInstantiated(Var); 431936f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor } 432091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 432136f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor InstantiateStaticDataMemberDefinition(E->getExprLoc(), Var); 432291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 432336f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor // Update the type to the newly instantiated definition's type both 432436f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor // here and within the expression. 432536f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor if (VarDecl *Def = Var->getDefinition()) { 432636f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor DRE->setDecl(Def); 432736f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor T = Def->getType(); 432836f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor DRE->setType(T); 432936f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor E->setType(T); 433036f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor } 4331f15748a28c8443eef2924ef83689c358c661e9c5Douglas Gregor } 433291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4333e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // We still go on to try to complete the type independently, as it 4334e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // may also require instantiations or diagnostics if it remains 4335e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // incomplete. 4336e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth } 4337e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth } 4338e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth } 4339e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth } 4340e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 4341e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // FIXME: Are there other cases which require instantiating something other 4342e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // than the type to complete the type of an expression? 4343e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 4344e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // Look through reference types and complete the referred type. 4345e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth if (const ReferenceType *Ref = T->getAs<ReferenceType>()) 4346e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth T = Ref->getPointeeType(); 4347e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 4348d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor return RequireCompleteType(E->getExprLoc(), T, Diagnoser); 4349d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor} 4350d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor 4351d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregornamespace { 4352f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor struct TypeDiagnoserDiag : Sema::TypeDiagnoser { 4353d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor unsigned DiagID; 435491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4355f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor TypeDiagnoserDiag(unsigned DiagID) 4356f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor : Sema::TypeDiagnoser(DiagID == 0), DiagID(DiagID) {} 435791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4358d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor virtual void diagnose(Sema &S, SourceLocation Loc, QualType T) { 4359d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor if (Suppressed) return; 4360d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor S.Diag(Loc, DiagID) << T; 4361d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor } 4362d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor }; 4363d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor} 4364d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor 4365d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregorbool Sema::RequireCompleteExprType(Expr *E, unsigned DiagID) { 4366f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor TypeDiagnoserDiag Diagnoser(DiagID); 4367d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor return RequireCompleteExprType(E, Diagnoser); 4368e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth} 4369e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 43701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// @brief Ensure that the type T is a complete type. 43714ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 43724ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// This routine checks whether the type @p T is complete in any 43734ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// context where a complete type is required. If @p T is a complete 437486447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// type, returns false. If @p T is a class template specialization, 437586447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// this routine then attempts to perform class template 437686447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// instantiation. If instantiation fails, or if @p T is incomplete 437786447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// and cannot be completed, issues the diagnostic @p diag (giving it 437886447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// the type @p T) and returns true. 43794ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 43804ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @param Loc The location in the source that the incomplete type 43814ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// diagnostic should refer to. 43824ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 43834ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @param T The type that this routine is examining for completeness. 43844ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 43854ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @returns @c true if @p T is incomplete and a diagnostic was emitted, 43864ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @c false otherwise. 438791a0cc913ecc5619b76d2e40742fd09725be8c56Anders Carlssonbool Sema::RequireCompleteType(SourceLocation Loc, QualType T, 4388f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor TypeDiagnoser &Diagnoser) { 4389573d9c325279b6e156c7fde163ffe3629c62d596Douglas Gregor // FIXME: Add this assertion to make sure we always get instantiation points. 4390573d9c325279b6e156c7fde163ffe3629c62d596Douglas Gregor // assert(!Loc.isInvalid() && "Invalid location in RequireCompleteType"); 4391690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor // FIXME: Add this assertion to help us flush out problems with 4392690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor // checking for dependent types and type-dependent expressions. 4393690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor // 43941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // assert(!T->isDependentType() && 4395690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor // "Can't ask whether a dependent type is complete"); 4396690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor 43974ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor // If we have a complete type, we're done. 4398d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor NamedDecl *Def = 0; 4399d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor if (!T->isIncompleteType(&Def)) { 4400d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor // If we know about the definition but it is not visible, complain. 4401d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor if (!Diagnoser.Suppressed && Def && !LookupResult::isVisible(Def)) { 4402d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor // Suppress this error outside of a SFINAE context if we've already 440391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // emitted the error once for this type. There's no usefulness in 4404d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor // repeating the diagnostic. 4405d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor // FIXME: Add a Fix-It that imports the corresponding module or includes 4406d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor // the header. 4407ca2ab45341c448284cf93770018c717810575f86Douglas Gregor Module *Owner = Def->getOwningModule(); 4408ca2ab45341c448284cf93770018c717810575f86Douglas Gregor Diag(Loc, diag::err_module_private_definition) 4409ca2ab45341c448284cf93770018c717810575f86Douglas Gregor << T << Owner->getFullModuleName(); 4410ca2ab45341c448284cf93770018c717810575f86Douglas Gregor Diag(Def->getLocation(), diag::note_previous_definition); 4411ca2ab45341c448284cf93770018c717810575f86Douglas Gregor 4412ca2ab45341c448284cf93770018c717810575f86Douglas Gregor if (!isSFINAEContext()) { 4413ca2ab45341c448284cf93770018c717810575f86Douglas Gregor // Recover by implicitly importing this module. 4414ca2ab45341c448284cf93770018c717810575f86Douglas Gregor createImplicitModuleImport(Loc, Owner); 4415d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor } 4416d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor } 441791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 44184ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor return false; 4419d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor } 44204ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor 4421bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan const TagType *Tag = T->getAs<TagType>(); 4422bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan const ObjCInterfaceType *IFace = 0; 442391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4424bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan if (Tag) { 4425bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan // Avoid diagnosing invalid decls as incomplete. 4426bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan if (Tag->getDecl()->isInvalidDecl()) 4427bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan return true; 4428bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan 4429bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan // Give the external AST source a chance to complete the type. 4430bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan if (Tag->getDecl()->hasExternalLexicalStorage()) { 4431bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan Context.getExternalSource()->CompleteType(Tag->getDecl()); 4432bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan if (!Tag->isIncompleteType()) 4433bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan return false; 4434bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan } 4435bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan } 4436bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan else if ((IFace = T->getAs<ObjCInterfaceType>())) { 4437bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan // Avoid diagnosing invalid decls as incomplete. 4438bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan if (IFace->getDecl()->isInvalidDecl()) 4439bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan return true; 444091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4441bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan // Give the external AST source a chance to complete the type. 4442bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan if (IFace->getDecl()->hasExternalLexicalStorage()) { 4443bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan Context.getExternalSource()->CompleteType(IFace->getDecl()); 4444bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan if (!IFace->isIncompleteType()) 4445bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan return false; 4446bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan } 4447bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan } 444891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4449d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor // If we have a class template specialization or a class member of a 4450923d56d436f750bc1f29db50e641078725558a1bSebastian Redl // class template specialization, or an array with known size of such, 4451923d56d436f750bc1f29db50e641078725558a1bSebastian Redl // try to instantiate it. 4452923d56d436f750bc1f29db50e641078725558a1bSebastian Redl QualType MaybeTemplate = T; 4453e656b8397f05fd1b7c4a735372f79a52f4e32be5Douglas Gregor while (const ConstantArrayType *Array 4454e656b8397f05fd1b7c4a735372f79a52f4e32be5Douglas Gregor = Context.getAsConstantArrayType(MaybeTemplate)) 4455923d56d436f750bc1f29db50e641078725558a1bSebastian Redl MaybeTemplate = Array->getElementType(); 4456923d56d436f750bc1f29db50e641078725558a1bSebastian Redl if (const RecordType *Record = MaybeTemplate->getAs<RecordType>()) { 44572943aed177b33ae3f14273b11a7b398e5276ec62Douglas Gregor if (ClassTemplateSpecializationDecl *ClassTemplateSpec 4458d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor = dyn_cast<ClassTemplateSpecializationDecl>(Record->getDecl())) { 4459972e6ce33c7e307f4b0da12bd6079bbd6ef76948Douglas Gregor if (ClassTemplateSpec->getSpecializationKind() == TSK_Undeclared) 4460972e6ce33c7e307f4b0da12bd6079bbd6ef76948Douglas Gregor return InstantiateClassTemplateSpecialization(Loc, ClassTemplateSpec, 4461d0e3daf2b980b505e535d35b432c938c6d0208efDouglas Gregor TSK_ImplicitInstantiation, 4462d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor /*Complain=*/!Diagnoser.Suppressed); 44631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else if (CXXRecordDecl *Rec 4464d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor = dyn_cast<CXXRecordDecl>(Record->getDecl())) { 4465564f4c5664f552becbd05407611a92754c40e641Richard Smith CXXRecordDecl *Pattern = Rec->getInstantiatedFromMemberClass(); 4466564f4c5664f552becbd05407611a92754c40e641Richard Smith if (!Rec->isBeingDefined() && Pattern) { 4467564f4c5664f552becbd05407611a92754c40e641Richard Smith MemberSpecializationInfo *MSI = Rec->getMemberSpecializationInfo(); 4468564f4c5664f552becbd05407611a92754c40e641Richard Smith assert(MSI && "Missing member specialization information?"); 4469357bbd022c1d340c8e255aea7a684ddb34bc76e5Douglas Gregor // This record was instantiated from a class within a template. 4470564f4c5664f552becbd05407611a92754c40e641Richard Smith if (MSI->getTemplateSpecializationKind() != TSK_ExplicitSpecialization) 4471f6b1185f0a8a209c06dfc1efdb6a59cc851e970cDouglas Gregor return InstantiateClass(Loc, Rec, Pattern, 4472f6b1185f0a8a209c06dfc1efdb6a59cc851e970cDouglas Gregor getTemplateInstantiationArgs(Rec), 4473f6b1185f0a8a209c06dfc1efdb6a59cc851e970cDouglas Gregor TSK_ImplicitInstantiation, 4474d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor /*Complain=*/!Diagnoser.Suppressed); 4475d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor } 4476d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor } 4477d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor } 44782943aed177b33ae3f14273b11a7b398e5276ec62Douglas Gregor 4479d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor if (Diagnoser.Suppressed) 44805842ba9fd482bb2fe5198b32c2ae549cd5474e6dDouglas Gregor return true; 4481d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor 44824ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor // We have an incomplete type. Produce a diagnostic. 4483d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor Diagnoser.diagnose(*this, Loc, T); 448491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 44854ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor // If the type was a forward declaration of a class/struct/union 448601620704304f819b82ecef769ec114e541a364d7Rafael Espindola // type, produce a note. 44874ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor if (Tag && !Tag->getDecl()->isInvalidDecl()) 44881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(Tag->getDecl()->getLocation(), 44894ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor Tag->isBeingDefined() ? diag::note_type_being_defined 44904ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor : diag::note_forward_declaration) 4491b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor << QualType(Tag, 0); 449291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4493b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor // If the Objective-C class was a forward declaration, produce a note. 4494b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor if (IFace && !IFace->getDecl()->isInvalidDecl()) 4495b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor Diag(IFace->getDecl()->getLocation(), diag::note_forward_class); 44964ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor 44974ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor return true; 44984ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor} 4499e6258936178b4c52b43b3b9dbec13552961cd645Douglas Gregor 4500fe6b2d481d91140923f4541f273b253291884214Douglas Gregorbool Sema::RequireCompleteType(SourceLocation Loc, QualType T, 450191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier unsigned DiagID) { 4502f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor TypeDiagnoserDiag Diagnoser(DiagID); 4503d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor return RequireCompleteType(Loc, T, Diagnoser); 4504fe6b2d481d91140923f4541f273b253291884214Douglas Gregor} 4505fe6b2d481d91140923f4541f273b253291884214Douglas Gregor 45066666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// \brief Get diagnostic %select index for tag kind for 45076666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// literal type diagnostic message. 45086666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// WARNING: Indexes apply to particular diagnostics only! 45096666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// 45106666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// \returns diagnostic %select index. 4511f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matosstatic unsigned getLiteralDiagFromTagKind(TagTypeKind Tag) { 45126666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos switch (Tag) { 4513f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matos case TTK_Struct: return 0; 4514f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matos case TTK_Interface: return 1; 4515f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matos case TTK_Class: return 2; 4516f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matos default: llvm_unreachable("Invalid tag kind for literal type diagnostic!"); 45176666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos } 45186666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos} 45196666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos 45209f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @brief Ensure that the type T is a literal type. 45219f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 45229f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// This routine checks whether the type @p T is a literal type. If @p T is an 45239f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// incomplete type, an attempt is made to complete it. If @p T is a literal 45249f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// type, or @p AllowIncompleteType is true and @p T is an incomplete type, 45259f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// returns false. Otherwise, this routine issues the diagnostic @p PD (giving 45269f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// it the type @p T), along with notes explaining why the type is not a 45279f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// literal type, and returns true. 45289f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 45299f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @param Loc The location in the source that the non-literal type 45309f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// diagnostic should refer to. 45319f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 45329f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @param T The type that this routine is examining for literalness. 45339f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 4534f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor/// @param Diagnoser Emits a diagnostic if T is not a literal type. 45359f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 45369f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @returns @c true if @p T is not a literal type and a diagnostic was emitted, 45379f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @c false otherwise. 45389f569cca2a4c5fb6026005434e27025b9e71309dRichard Smithbool Sema::RequireLiteralType(SourceLocation Loc, QualType T, 4539f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor TypeDiagnoser &Diagnoser) { 45409f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith assert(!T->isDependentType() && "type should not be dependent"); 45419f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 4542ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman QualType ElemType = Context.getBaseElementType(T); 4543ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman RequireCompleteType(Loc, ElemType, 0); 4544ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman 454586c3ae46250cdcc57778c27826060779a92f3815Richard Smith if (T->isLiteralType()) 45469f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return false; 45479f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 4548f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor if (Diagnoser.Suppressed) 45499f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 45509f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 4551f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor Diagnoser.diagnose(*this, Loc, T); 45529f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 45539f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith if (T->isVariableArrayType()) 45549f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 45559f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 4556ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman const RecordType *RT = ElemType->getAs<RecordType>(); 45579f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith if (!RT) 45589f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 45599f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 45609f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith const CXXRecordDecl *RD = cast<CXXRecordDecl>(RT->getDecl()); 45619f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 4562c799a6a5c884831c3c3ea57d30fbe4ab35709d49Richard Smith // A partially-defined class type can't be a literal type, because a literal 4563c799a6a5c884831c3c3ea57d30fbe4ab35709d49Richard Smith // class type must have a trivial destructor (which can't be checked until 4564c799a6a5c884831c3c3ea57d30fbe4ab35709d49Richard Smith // the class definition is complete). 4565c799a6a5c884831c3c3ea57d30fbe4ab35709d49Richard Smith if (!RD->isCompleteDefinition()) { 4566d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor RequireCompleteType(Loc, ElemType, diag::note_non_literal_incomplete, T); 4567ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman return true; 4568c799a6a5c884831c3c3ea57d30fbe4ab35709d49Richard Smith } 4569ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman 45709f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith // If the class has virtual base classes, then it's not an aggregate, and 457186c3ae46250cdcc57778c27826060779a92f3815Richard Smith // cannot have any constexpr constructors or a trivial default constructor, 457286c3ae46250cdcc57778c27826060779a92f3815Richard Smith // so is non-literal. This is better to diagnose than the resulting absence 457386c3ae46250cdcc57778c27826060779a92f3815Richard Smith // of constexpr constructors. 45749f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith if (RD->getNumVBases()) { 45759f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith Diag(RD->getLocation(), diag::note_non_literal_virtual_base) 45766666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos << getLiteralDiagFromTagKind(RD->getTagKind()) << RD->getNumVBases(); 45779f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith for (CXXRecordDecl::base_class_const_iterator I = RD->vbases_begin(), 45789f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith E = RD->vbases_end(); I != E; ++I) 457996a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar Diag(I->getLocStart(), 45809f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith diag::note_constexpr_virtual_base_here) << I->getSourceRange(); 458186c3ae46250cdcc57778c27826060779a92f3815Richard Smith } else if (!RD->isAggregate() && !RD->hasConstexprNonCopyMoveConstructor() && 458286c3ae46250cdcc57778c27826060779a92f3815Richard Smith !RD->hasTrivialDefaultConstructor()) { 45839f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith Diag(RD->getLocation(), diag::note_non_literal_no_constexpr_ctors) << RD; 45849f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } else if (RD->hasNonLiteralTypeFieldsOrBases()) { 45859f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith for (CXXRecordDecl::base_class_const_iterator I = RD->bases_begin(), 45869f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith E = RD->bases_end(); I != E; ++I) { 45879f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith if (!I->getType()->isLiteralType()) { 458896a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar Diag(I->getLocStart(), 45899f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith diag::note_non_literal_base_class) 45909f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith << RD << I->getType() << I->getSourceRange(); 45919f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 45929f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 45939f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 45949f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith for (CXXRecordDecl::field_iterator I = RD->field_begin(), 45959f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith E = RD->field_end(); I != E; ++I) { 4596262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie if (!I->getType()->isLiteralType() || 4597262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie I->getType().isVolatileQualified()) { 4598262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie Diag(I->getLocation(), diag::note_non_literal_field) 4599581deb3da481053c4993c7600f97acf7768caac5David Blaikie << RD << *I << I->getType() 4600262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie << I->getType().isVolatileQualified(); 46019f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 46029f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 46039f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 46049f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } else if (!RD->hasTrivialDestructor()) { 46059f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith // All fields and bases are of literal types, so have trivial destructors. 46069f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith // If this class's destructor is non-trivial it must be user-declared. 46079f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith CXXDestructorDecl *Dtor = RD->getDestructor(); 46089f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith assert(Dtor && "class has literal fields and bases but no dtor?"); 46099f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith if (!Dtor) 46109f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 46119f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 46129f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith Diag(Dtor->getLocation(), Dtor->isUserProvided() ? 46139f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith diag::note_non_literal_user_provided_dtor : 46149f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith diag::note_non_literal_nontrivial_dtor) << RD; 4615ac71351acdefc9de0c770c1d717e621ac9e684bfRichard Smith if (!Dtor->isUserProvided()) 4616ac71351acdefc9de0c770c1d717e621ac9e684bfRichard Smith SpecialMemberIsTrivial(Dtor, CXXDestructor, /*Diagnose*/true); 46179f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 46189f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 46199f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 46209f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith} 46219f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 462291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosierbool Sema::RequireLiteralType(SourceLocation Loc, QualType T, unsigned DiagID) { 4623f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor TypeDiagnoserDiag Diagnoser(DiagID); 4624f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor return RequireLiteralType(Loc, T, Diagnoser); 4625f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor} 4626f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor 4627465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara/// \brief Retrieve a version of the type 'T' that is elaborated by Keyword 4628465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara/// and qualified by the nested-name-specifier contained in SS. 4629465d41b92b2c862f3062c412a0538db65c6a2661Abramo BagnaraQualType Sema::getElaboratedType(ElaboratedTypeKeyword Keyword, 4630465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara const CXXScopeSpec &SS, QualType T) { 4631465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara if (T.isNull()) 4632e6258936178b4c52b43b3b9dbec13552961cd645Douglas Gregor return T; 4633465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara NestedNameSpecifier *NNS; 4634e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara if (SS.isValid()) 4635465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara NNS = static_cast<NestedNameSpecifier *>(SS.getScopeRep()); 4636465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara else { 4637465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara if (Keyword == ETK_None) 4638465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara return T; 4639465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara NNS = 0; 4640465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara } 4641465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara return Context.getElaboratedType(Keyword, NNS, T); 4642e6258936178b4c52b43b3b9dbec13552961cd645Douglas Gregor} 4643af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson 46442a984cad5ac3fdceeff2bd99daa7b90979313475John McCallQualType Sema::BuildTypeofExprType(Expr *E, SourceLocation Loc) { 4645fb8721ce4c6fef3739b1cbd1e38e3f1949462033John McCall ExprResult ER = CheckPlaceholderExpr(E); 46462a984cad5ac3fdceeff2bd99daa7b90979313475John McCall if (ER.isInvalid()) return QualType(); 46472a984cad5ac3fdceeff2bd99daa7b90979313475John McCall E = ER.take(); 46482a984cad5ac3fdceeff2bd99daa7b90979313475John McCall 46492b1d51bcf891f8887759aebb4b9e78dee8542e6dFariborz Jahanian if (!E->isTypeDependent()) { 46502b1d51bcf891f8887759aebb4b9e78dee8542e6dFariborz Jahanian QualType T = E->getType(); 4651aca7f7bab0102341863a0d1bdb048d69213ae362Fariborz Jahanian if (const TagType *TT = T->getAs<TagType>()) 4652aca7f7bab0102341863a0d1bdb048d69213ae362Fariborz Jahanian DiagnoseUseOfDecl(TT->getDecl(), E->getExprLoc()); 46532b1d51bcf891f8887759aebb4b9e78dee8542e6dFariborz Jahanian } 4654af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson return Context.getTypeOfExprType(E); 4655af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson} 4656af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson 4657f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor/// getDecltypeForExpr - Given an expr, will return the decltype for 4658f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor/// that expression, according to the rules in C++11 4659f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor/// [dcl.type.simple]p4 and C++11 [expr.lambda.prim]p18. 4660f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregorstatic QualType getDecltypeForExpr(Sema &S, Expr *E) { 4661f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (E->isTypeDependent()) 4662f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return S.Context.DependentTy; 4663f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor 46646d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // C++11 [dcl.type.simple]p4: 46656d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // The type denoted by decltype(e) is defined as follows: 46666d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // 46676d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // - if e is an unparenthesized id-expression or an unparenthesized class 466891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // member access (5.2.5), decltype(e) is the type of the entity named 466991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // by e. If there is no such entity, or if e names a set of overloaded 46706d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // functions, the program is ill-formed; 467184dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor // 467284dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor // We apply the same rules for Objective-C ivar and property references. 4673f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) { 4674f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (const ValueDecl *VD = dyn_cast<ValueDecl>(DRE->getDecl())) 4675f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return VD->getType(); 467684dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor } else if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) { 4677f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (const FieldDecl *FD = dyn_cast<FieldDecl>(ME->getMemberDecl())) 4678f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return FD->getType(); 467984dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor } else if (const ObjCIvarRefExpr *IR = dyn_cast<ObjCIvarRefExpr>(E)) { 468084dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor return IR->getDecl()->getType(); 468184dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor } else if (const ObjCPropertyRefExpr *PR = dyn_cast<ObjCPropertyRefExpr>(E)) { 468284dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor if (PR->isExplicitProperty()) 468384dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor return PR->getExplicitProperty()->getType(); 4684f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 468584dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor 4686f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // C++11 [expr.lambda.prim]p18: 4687f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // Every occurrence of decltype((x)) where x is a possibly 4688f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // parenthesized id-expression that names an entity of automatic 4689f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // storage duration is treated as if x were transformed into an 4690f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // access to a corresponding data member of the closure type that 4691f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // would have been declared if x were an odr-use of the denoted 4692f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // entity. 4693f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor using namespace sema; 4694f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (S.getCurLambda()) { 4695f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (isa<ParenExpr>(E)) { 4696f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParens())) { 4697f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (VarDecl *Var = dyn_cast<VarDecl>(DRE->getDecl())) { 469868932845a432d2a1dbbc57a84fd85bbb37c90487Douglas Gregor QualType T = S.getCapturedDeclRefType(Var, DRE->getLocation()); 469968932845a432d2a1dbbc57a84fd85bbb37c90487Douglas Gregor if (!T.isNull()) 470068932845a432d2a1dbbc57a84fd85bbb37c90487Douglas Gregor return S.Context.getLValueReferenceType(T); 4701f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 4702f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 4703f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 4704f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 4705f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor 4706f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor 47076d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // C++11 [dcl.type.simple]p4: 47086d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // [...] 47096d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor QualType T = E->getType(); 47106d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor switch (E->getValueKind()) { 471191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // - otherwise, if e is an xvalue, decltype(e) is T&&, where T is the 47126d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // type of e; 47136d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor case VK_XValue: T = S.Context.getRValueReferenceType(T); break; 471491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // - otherwise, if e is an lvalue, decltype(e) is T&, where T is the 47156d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // type of e; 47166d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor case VK_LValue: T = S.Context.getLValueReferenceType(T); break; 47176d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // - otherwise, decltype(e) is the type of e. 47186d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor case VK_RValue: break; 47196d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor } 472091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4721f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return T; 4722f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor} 4723f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor 47242a984cad5ac3fdceeff2bd99daa7b90979313475John McCallQualType Sema::BuildDecltypeType(Expr *E, SourceLocation Loc) { 4725fb8721ce4c6fef3739b1cbd1e38e3f1949462033John McCall ExprResult ER = CheckPlaceholderExpr(E); 47262a984cad5ac3fdceeff2bd99daa7b90979313475John McCall if (ER.isInvalid()) return QualType(); 47272a984cad5ac3fdceeff2bd99daa7b90979313475John McCall E = ER.take(); 472891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4729f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return Context.getDecltypeType(E, getDecltypeForExpr(*this, E)); 4730af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson} 4731ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt 4732ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean HuntQualType Sema::BuildUnaryTransformType(QualType BaseType, 4733ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt UnaryTransformType::UTTKind UKind, 4734ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt SourceLocation Loc) { 4735ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt switch (UKind) { 4736ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt case UnaryTransformType::EnumUnderlyingType: 4737ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt if (!BaseType->isDependentType() && !BaseType->isEnumeralType()) { 4738ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Diag(Loc, diag::err_only_enums_have_underlying_types); 4739ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt return QualType(); 4740ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } else { 4741ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt QualType Underlying = BaseType; 4742ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt if (!BaseType->isDependentType()) { 4743ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt EnumDecl *ED = BaseType->getAs<EnumType>()->getDecl(); 4744ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt assert(ED && "EnumType has no EnumDecl"); 4745ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt DiagnoseUseOfDecl(ED, Loc); 4746ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Underlying = ED->getIntegerType(); 4747ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } 4748ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt assert(!Underlying.isNull()); 4749ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt return Context.getUnaryTransformType(BaseType, Underlying, 4750ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt UnaryTransformType::EnumUnderlyingType); 4751ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } 4752ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } 4753ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt llvm_unreachable("unknown unary transform type"); 4754ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt} 4755b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman 4756b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli FriedmanQualType Sema::BuildAtomicType(QualType T, SourceLocation Loc) { 4757b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman if (!T->isDependentType()) { 47588327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith // FIXME: It isn't entirely clear whether incomplete atomic types 47598327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith // are allowed or not; for simplicity, ban them for the moment. 4760d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor if (RequireCompleteType(Loc, T, diag::err_atomic_specifier_bad_type, 0)) 47618327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith return QualType(); 47628327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith 4763b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman int DisallowedKind = -1; 47648327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith if (T->isArrayType()) 4765b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 1; 4766b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (T->isFunctionType()) 4767b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 2; 4768b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (T->isReferenceType()) 4769b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 3; 4770b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (T->isAtomicType()) 4771b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 4; 4772b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (T.hasQualifiers()) 4773b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 5; 4774b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (!T.isTriviallyCopyableType(Context)) 4775b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman // Some other non-trivially-copyable type (probably a C++ class) 4776b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 6; 4777b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman 4778b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman if (DisallowedKind != -1) { 4779b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman Diag(Loc, diag::err_atomic_specifier_bad_type) << DisallowedKind << T; 4780b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman return QualType(); 4781b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman } 4782b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman 4783b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman // FIXME: Do we need any handling for ARC here? 4784b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman } 4785b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman 4786b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman // Build the pointer type. 4787b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman return Context.getAtomicType(T); 4788b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman} 4789