SemaType.cpp revision 8c952cd40ccec9d720931f27e7d722fed207d536
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" 348c952cd40ccec9d720931f27e7d722fed207d536Richard Smith#include "llvm/ADT/SmallString.h" 3587c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor#include "llvm/Support/ErrorHandling.h" 365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerusing namespace clang; 375f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 385db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner/// isOmittedBlockReturnType - Return true if this declarator is missing a 3991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier/// return type because this is a omitted return type on a block literal. 408ce35b095e8fca45e04c1bda14ed0548ce7536adSebastian Redlstatic bool isOmittedBlockReturnType(const Declarator &D) { 415db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner if (D.getContext() != Declarator::BlockLiteralContext || 428ce35b095e8fca45e04c1bda14ed0548ce7536adSebastian Redl D.getDeclSpec().hasTypeSpecifier()) 435db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner return false; 4491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 455db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner if (D.getNumTypeObjects() == 0) 46a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner return true; // ^{ ... } 4791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 485db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner if (D.getNumTypeObjects() == 1 && 495db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner D.getTypeObject(0).Kind == DeclaratorChunk::Function) 50a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner return true; // ^(int X, float Y) { ... } 5191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 525db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner return false; 535db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner} 545db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner 552792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall/// diagnoseBadTypeAttribute - Diagnoses a type attribute which 562792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall/// doesn't apply to the given type. 572792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCallstatic void diagnoseBadTypeAttribute(Sema &S, const AttributeList &attr, 582792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall QualType type) { 59108f756bebd991eaa980cfb9994353612a2e5ff6Chandler Carruth bool useExpansionLoc = false; 602792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 612792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall unsigned diagID = 0; 622792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall switch (attr.getKind()) { 638e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ObjCGC: 642792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall diagID = diag::warn_pointer_attribute_wrong_type; 65108f756bebd991eaa980cfb9994353612a2e5ff6Chandler Carruth useExpansionLoc = true; 662792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall break; 672792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 688e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ObjCOwnership: 6905d4876a64865e34366b58fc8a6848c3cde895d9Argyrios Kyrtzidis diagID = diag::warn_objc_object_attribute_wrong_type; 70108f756bebd991eaa980cfb9994353612a2e5ff6Chandler Carruth useExpansionLoc = true; 7105d4876a64865e34366b58fc8a6848c3cde895d9Argyrios Kyrtzidis break; 7205d4876a64865e34366b58fc8a6848c3cde895d9Argyrios Kyrtzidis 732792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall default: 742792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall // Assume everything else was a function attribute. 752792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall diagID = diag::warn_function_attribute_wrong_type; 762792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall break; 772792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall } 782792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 792792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall SourceLocation loc = attr.getLoc(); 805f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner StringRef name = attr.getName()->getName(); 812792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 822792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall // The GC attributes are usually written with macros; special-case them. 83108f756bebd991eaa980cfb9994353612a2e5ff6Chandler Carruth if (useExpansionLoc && loc.isMacroID() && attr.getParameterName()) { 84834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall if (attr.getParameterName()->isStr("strong")) { 85834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall if (S.findMacroSpelling(loc, "__strong")) name = "__strong"; 86834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall } else if (attr.getParameterName()->isStr("weak")) { 87834e3f6c77d9ac03997a3f0c56934edcf406a355John McCall if (S.findMacroSpelling(loc, "__weak")) name = "__weak"; 882792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall } 892792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall } 902792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 912792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall S.Diag(loc, diagID) << name << type; 922792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall} 932792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 94711c52bb20d0c69063b52a99826fb7d2835501f1John McCall// objc_gc applies to Objective-C pointers or, otherwise, to the 95711c52bb20d0c69063b52a99826fb7d2835501f1John McCall// smallest available pointer type (i.e. 'void*' in 'void**'). 96711c52bb20d0c69063b52a99826fb7d2835501f1John McCall#define OBJC_POINTER_TYPE_ATTRS_CASELIST \ 978e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ObjCGC: \ 988e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ObjCOwnership 99711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 100711c52bb20d0c69063b52a99826fb7d2835501f1John McCall// Function type attributes. 101711c52bb20d0c69063b52a99826fb7d2835501f1John McCall#define FUNCTION_TYPE_ATTRS_CASELIST \ 1028e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_NoReturn: \ 1038e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_CDecl: \ 1048e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_FastCall: \ 1058e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_StdCall: \ 1068e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ThisCall: \ 1078e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_Pascal: \ 1088e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_Regparm: \ 109263366f9241366f29ba65b703120f302490c39ffDerek Schuff case AttributeList::AT_Pcs: \ 11038980086c0f791e8c23cc882574f18e5b4a87db6Guy Benyei case AttributeList::AT_PnaclCall: \ 11138980086c0f791e8c23cc882574f18e5b4a87db6Guy Benyei case AttributeList::AT_IntelOclBicc \ 112711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 113711c52bb20d0c69063b52a99826fb7d2835501f1John McCallnamespace { 114711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// An object which stores processing state for the entire 115711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// GetTypeForDeclarator process. 116711c52bb20d0c69063b52a99826fb7d2835501f1John McCall class TypeProcessingState { 117711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Sema &sema; 118711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 119711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// The declarator being processed. 120711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator; 121711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 122711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// The index of the declarator chunk we're currently processing. 123711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// May be the total number of valid chunks, indicating the 124711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// DeclSpec. 125711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned chunkIndex; 126711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 127711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// Whether there are non-trivial modifications to the decl spec. 128711c52bb20d0c69063b52a99826fb7d2835501f1John McCall bool trivial; 129711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 1307ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall /// Whether we saved the attributes in the decl spec. 1317ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall bool hasSavedAttrs; 1327ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall 133711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// The original set of attributes on the DeclSpec. 1345f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<AttributeList*, 2> savedAttrs; 135711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 136711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// A list of attributes to diagnose the uselessness of when the 137711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// processing is complete. 1385f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<AttributeList*, 2> ignoredTypeAttrs; 139711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 140711c52bb20d0c69063b52a99826fb7d2835501f1John McCall public: 141711c52bb20d0c69063b52a99826fb7d2835501f1John McCall TypeProcessingState(Sema &sema, Declarator &declarator) 142711c52bb20d0c69063b52a99826fb7d2835501f1John McCall : sema(sema), declarator(declarator), 143711c52bb20d0c69063b52a99826fb7d2835501f1John McCall chunkIndex(declarator.getNumTypeObjects()), 1447ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall trivial(true), hasSavedAttrs(false) {} 145711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 146711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Sema &getSema() const { 147711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return sema; 148711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 149711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 150711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &getDeclarator() const { 151711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return declarator; 152711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 153711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 154b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall bool isProcessingDeclSpec() const { 155b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall return chunkIndex == declarator.getNumTypeObjects(); 156b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 157b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 158711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned getCurrentChunkIndex() const { 159711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return chunkIndex; 160711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 161711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 162711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void setCurrentChunkIndex(unsigned idx) { 163711c52bb20d0c69063b52a99826fb7d2835501f1John McCall assert(idx <= declarator.getNumTypeObjects()); 164711c52bb20d0c69063b52a99826fb7d2835501f1John McCall chunkIndex = idx; 165711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 166711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 167711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *&getCurrentAttrListRef() const { 168b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall if (isProcessingDeclSpec()) 169711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return getMutableDeclSpec().getAttributes().getListRef(); 170711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return declarator.getTypeObject(chunkIndex).getAttrListRef(); 171711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 172711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 173711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// Save the current set of attributes on the DeclSpec. 174711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void saveDeclSpecAttrs() { 175711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Don't try to save them multiple times. 1767ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall if (hasSavedAttrs) return; 177711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 178711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclSpec &spec = getMutableDeclSpec(); 179711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (AttributeList *attr = spec.getAttributes().getList(); attr; 180711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr = attr->getNext()) 181711c52bb20d0c69063b52a99826fb7d2835501f1John McCall savedAttrs.push_back(attr); 182711c52bb20d0c69063b52a99826fb7d2835501f1John McCall trivial &= savedAttrs.empty(); 1837ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall hasSavedAttrs = true; 184711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 185711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 186711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// Record that we had nowhere to put the given type attribute. 187711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// We will diagnose such attributes later. 188711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void addIgnoredTypeAttr(AttributeList &attr) { 189711c52bb20d0c69063b52a99826fb7d2835501f1John McCall ignoredTypeAttrs.push_back(&attr); 190711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 191711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 192711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// Diagnose all the ignored type attributes, given that the 193711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// declarator worked out to the given type. 194711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void diagnoseIgnoredTypeAttrs(QualType type) const { 1955f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner for (SmallVectorImpl<AttributeList*>::const_iterator 196711c52bb20d0c69063b52a99826fb7d2835501f1John McCall i = ignoredTypeAttrs.begin(), e = ignoredTypeAttrs.end(); 1972792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall i != e; ++i) 1982792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall diagnoseBadTypeAttribute(getSema(), **i, type); 199711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 200711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 201711c52bb20d0c69063b52a99826fb7d2835501f1John McCall ~TypeProcessingState() { 202711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (trivial) return; 203711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 204711c52bb20d0c69063b52a99826fb7d2835501f1John McCall restoreDeclSpecAttrs(); 205711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 206711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 207711c52bb20d0c69063b52a99826fb7d2835501f1John McCall private: 208711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclSpec &getMutableDeclSpec() const { 209711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return const_cast<DeclSpec&>(declarator.getDeclSpec()); 210711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 211711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 212711c52bb20d0c69063b52a99826fb7d2835501f1John McCall void restoreDeclSpecAttrs() { 2137ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall assert(hasSavedAttrs); 2147ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall 2157ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall if (savedAttrs.empty()) { 2167ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall getMutableDeclSpec().getAttributes().set(0); 2177ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall return; 2187ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall } 2197ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall 220711c52bb20d0c69063b52a99826fb7d2835501f1John McCall getMutableDeclSpec().getAttributes().set(savedAttrs[0]); 221711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = 0, e = savedAttrs.size() - 1; i != e; ++i) 222711c52bb20d0c69063b52a99826fb7d2835501f1John McCall savedAttrs[i]->setNext(savedAttrs[i+1]); 223711c52bb20d0c69063b52a99826fb7d2835501f1John McCall savedAttrs.back()->setNext(0); 224711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 225711c52bb20d0c69063b52a99826fb7d2835501f1John McCall }; 226711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 227711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// Basically std::pair except that we really want to avoid an 228711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// implicit operator= for safety concerns. It's also a minor 229711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// link-time optimization for this to be a private type. 230711c52bb20d0c69063b52a99826fb7d2835501f1John McCall struct AttrAndList { 231711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// The attribute. 232711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &first; 233711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 234711c52bb20d0c69063b52a99826fb7d2835501f1John McCall /// The head of the list the attribute is currently in. 235711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *&second; 236711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 237711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttrAndList(AttributeList &attr, AttributeList *&head) 238711c52bb20d0c69063b52a99826fb7d2835501f1John McCall : first(attr), second(head) {} 239711c52bb20d0c69063b52a99826fb7d2835501f1John McCall }; 24004a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall} 24104a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 242711c52bb20d0c69063b52a99826fb7d2835501f1John McCallnamespace llvm { 243711c52bb20d0c69063b52a99826fb7d2835501f1John McCall template <> struct isPodLike<AttrAndList> { 244711c52bb20d0c69063b52a99826fb7d2835501f1John McCall static const bool value = true; 245711c52bb20d0c69063b52a99826fb7d2835501f1John McCall }; 246711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 247711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 248711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void spliceAttrIntoList(AttributeList &attr, AttributeList *&head) { 249711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setNext(head); 250711c52bb20d0c69063b52a99826fb7d2835501f1John McCall head = &attr; 251711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 252711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 253711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void spliceAttrOutOfList(AttributeList &attr, AttributeList *&head) { 254711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (head == &attr) { 255711c52bb20d0c69063b52a99826fb7d2835501f1John McCall head = attr.getNext(); 256711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 25704a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall } 258711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 259711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *cur = head; 260711c52bb20d0c69063b52a99826fb7d2835501f1John McCall while (true) { 261711c52bb20d0c69063b52a99826fb7d2835501f1John McCall assert(cur && cur->getNext() && "ran out of attrs?"); 262711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (cur->getNext() == &attr) { 263711c52bb20d0c69063b52a99826fb7d2835501f1John McCall cur->setNext(attr.getNext()); 264711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 265711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 266711c52bb20d0c69063b52a99826fb7d2835501f1John McCall cur = cur->getNext(); 267711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 268711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 269711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 270711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void moveAttrFromListToList(AttributeList &attr, 271711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *&fromList, 272711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *&toList) { 273711c52bb20d0c69063b52a99826fb7d2835501f1John McCall spliceAttrOutOfList(attr, fromList); 274711c52bb20d0c69063b52a99826fb7d2835501f1John McCall spliceAttrIntoList(attr, toList); 275711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 276711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 277f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith/// The location of a type attribute. 278f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smithenum TypeAttrLocation { 279f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith /// The attribute is in the decl-specifier-seq. 280f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith TAL_DeclSpec, 281f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith /// The attribute is part of a DeclaratorChunk. 282f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith TAL_DeclChunk, 283f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith /// The attribute is immediately after the declaration's name. 284f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith TAL_DeclName 285f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith}; 286f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith 287711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void processTypeAttrs(TypeProcessingState &state, 288f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith QualType &type, TypeAttrLocation TAL, 289711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *attrs); 290711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 291711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleFunctionTypeAttr(TypeProcessingState &state, 292711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 293711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &type); 294711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 295711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleObjCGCTypeAttr(TypeProcessingState &state, 296711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, QualType &type); 297711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 298b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidisstatic bool handleObjCOwnershipTypeAttr(TypeProcessingState &state, 299f85e193739c953358c865005855253af4f68a497John McCall AttributeList &attr, QualType &type); 300f85e193739c953358c865005855253af4f68a497John McCall 301711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleObjCPointerTypeAttr(TypeProcessingState &state, 302711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, QualType &type) { 3038e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr.getKind() == AttributeList::AT_ObjCGC) 304f85e193739c953358c865005855253af4f68a497John McCall return handleObjCGCTypeAttr(state, attr, type); 3058e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt assert(attr.getKind() == AttributeList::AT_ObjCOwnership); 306b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis return handleObjCOwnershipTypeAttr(state, attr, type); 307711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 308711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 309b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall/// Given the index of a declarator chunk, check whether that chunk 310b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall/// directly specifies the return type of a function and, if so, find 311b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall/// an appropriate place for it. 312b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall/// 313b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall/// \param i - a notional index which the search will start 314b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall/// immediately inside 315b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCallstatic DeclaratorChunk *maybeMovePastReturnType(Declarator &declarator, 316b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall unsigned i) { 317b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall assert(i <= declarator.getNumTypeObjects()); 318b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 319b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall DeclaratorChunk *result = 0; 320b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 321b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // First, look inwards past parens for a function declarator. 322b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall for (; i != 0; --i) { 323b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall DeclaratorChunk &fnChunk = declarator.getTypeObject(i-1); 324b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall switch (fnChunk.Kind) { 325b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Paren: 326b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall continue; 327b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 328b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // If we find anything except a function, bail out. 329b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Pointer: 330b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::BlockPointer: 331b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Array: 332b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Reference: 333b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::MemberPointer: 334b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall return result; 335b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 336b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // If we do find a function declarator, scan inwards from that, 337b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // looking for a block-pointer declarator. 338b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Function: 339b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall for (--i; i != 0; --i) { 340b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall DeclaratorChunk &blockChunk = declarator.getTypeObject(i-1); 341b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall switch (blockChunk.Kind) { 342b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Paren: 343b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Pointer: 344b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Array: 345b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Function: 346b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Reference: 347b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::MemberPointer: 348b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall continue; 349b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::BlockPointer: 350b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall result = &blockChunk; 351b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall goto continue_outer; 352b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 353b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall llvm_unreachable("bad declarator chunk kind"); 354b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 355b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 356b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // If we run out of declarators doing that, we're done. 357b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall return result; 358b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 359b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall llvm_unreachable("bad declarator chunk kind"); 360b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 361b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // Okay, reconsider from our new point. 362b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall continue_outer: ; 363b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 364b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 365b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // Ran out of chunks, bail out. 366b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall return result; 367b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall} 368b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 369711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Given that an objc_gc attribute was written somewhere on a 370711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// declaration *other* than on the declarator itself (for which, use 371711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// distributeObjCPointerTypeAttrFromDeclarator), and given that it 372711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// didn't apply in whatever position it was written in, try to move 373711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// it to a more appropriate position. 374711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void distributeObjCPointerTypeAttr(TypeProcessingState &state, 375711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 376711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType type) { 377711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 378b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 379b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // Move it to the outermost normal or block pointer declarator. 380711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = state.getCurrentChunkIndex(); i != 0; --i) { 381711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &chunk = declarator.getTypeObject(i-1); 382711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (chunk.Kind) { 383711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Pointer: 384b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::BlockPointer: { 385b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // But don't move an ARC ownership attribute to the return type 386b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // of a block. 387b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall DeclaratorChunk *destChunk = 0; 388b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall if (state.isProcessingDeclSpec() && 389b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall attr.getKind() == AttributeList::AT_ObjCOwnership) 390b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall destChunk = maybeMovePastReturnType(declarator, i - 1); 391b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall if (!destChunk) destChunk = &chunk; 392b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 393711c52bb20d0c69063b52a99826fb7d2835501f1John McCall moveAttrFromListToList(attr, state.getCurrentAttrListRef(), 394b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall destChunk->getAttrListRef()); 395711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 396b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 397711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 398711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Paren: 399711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Array: 400711c52bb20d0c69063b52a99826fb7d2835501f1John McCall continue; 401711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 402b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // We may be starting at the return type of a block. 403b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall case DeclaratorChunk::Function: 404b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall if (state.isProcessingDeclSpec() && 405b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall attr.getKind() == AttributeList::AT_ObjCOwnership) { 406b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall if (DeclaratorChunk *dest = maybeMovePastReturnType(declarator, i)) { 407b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall moveAttrFromListToList(attr, state.getCurrentAttrListRef(), 408b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall dest->getAttrListRef()); 409b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall return; 410b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 411b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 412b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall goto error; 413b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 414711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Don't walk through these. 415711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Reference: 416711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::MemberPointer: 417711c52bb20d0c69063b52a99826fb7d2835501f1John McCall goto error; 418711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 419711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 420711c52bb20d0c69063b52a99826fb7d2835501f1John McCall error: 4212792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall 4222792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall diagnoseBadTypeAttribute(state.getSema(), attr, type); 423711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 424711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 425711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Distribute an objc_gc type attribute that was written on the 426711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// declarator. 427711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void 428711c52bb20d0c69063b52a99826fb7d2835501f1John McCalldistributeObjCPointerTypeAttrFromDeclarator(TypeProcessingState &state, 429711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 430711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 431711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 432711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 433711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // objc_gc goes on the innermost pointer to something that's not a 434711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // pointer. 435711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned innermost = -1U; 436711c52bb20d0c69063b52a99826fb7d2835501f1John McCall bool considerDeclSpec = true; 437711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = 0, e = declarator.getNumTypeObjects(); i != e; ++i) { 438711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &chunk = declarator.getTypeObject(i); 439711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (chunk.Kind) { 440711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Pointer: 441711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::BlockPointer: 442711c52bb20d0c69063b52a99826fb7d2835501f1John McCall innermost = i; 443ae278a3a57595349a411f6474938d4dd1b263a0eJohn McCall continue; 444711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 445711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Reference: 446711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::MemberPointer: 447711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Paren: 448711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Array: 449711c52bb20d0c69063b52a99826fb7d2835501f1John McCall continue; 450711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 451711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Function: 452711c52bb20d0c69063b52a99826fb7d2835501f1John McCall considerDeclSpec = false; 453711c52bb20d0c69063b52a99826fb7d2835501f1John McCall goto done; 454711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 455711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 456711c52bb20d0c69063b52a99826fb7d2835501f1John McCall done: 457711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 458711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // That might actually be the decl spec if we weren't blocked by 459711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // anything in the declarator. 460711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (considerDeclSpec) { 4617ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall if (handleObjCPointerTypeAttr(state, attr, declSpecType)) { 4627ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall // Splice the attribute into the decl spec. Prevents the 4637ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall // attribute from being applied multiple times and gives 4647ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall // the source-location-filler something to work with. 4657ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall state.saveDeclSpecAttrs(); 4667ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall moveAttrFromListToList(attr, declarator.getAttrListRef(), 4677ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall declarator.getMutableDeclSpec().getAttributes().getListRef()); 468711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 4697ea21937de6f849a7f44f10549c3d69c5a8cb3f3John McCall } 470711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 471711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 472711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Otherwise, if we found an appropriate chunk, splice the attribute 473711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // into it. 474711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (innermost != -1U) { 475711c52bb20d0c69063b52a99826fb7d2835501f1John McCall moveAttrFromListToList(attr, declarator.getAttrListRef(), 476711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.getTypeObject(innermost).getAttrListRef()); 477711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 478711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 479711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 480711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Otherwise, diagnose when we're done building the type. 481711c52bb20d0c69063b52a99826fb7d2835501f1John McCall spliceAttrOutOfList(attr, declarator.getAttrListRef()); 482711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.addIgnoredTypeAttr(attr); 483711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 484711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 485711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// A function type attribute was written somewhere in a declaration 486711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// *other* than on the declarator itself or in the decl spec. Given 487711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// that it didn't apply in whatever position it was written in, try 488711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// to move it to a more appropriate position. 489711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void distributeFunctionTypeAttr(TypeProcessingState &state, 490711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 491711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType type) { 492711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 493711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 494711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Try to push the attribute from the return type of a function to 495711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // the function itself. 496711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = state.getCurrentChunkIndex(); i != 0; --i) { 497711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &chunk = declarator.getTypeObject(i-1); 498711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (chunk.Kind) { 499711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Function: 500711c52bb20d0c69063b52a99826fb7d2835501f1John McCall moveAttrFromListToList(attr, state.getCurrentAttrListRef(), 501711c52bb20d0c69063b52a99826fb7d2835501f1John McCall chunk.getAttrListRef()); 502711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 503711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 504711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Paren: 505711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Pointer: 506711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::BlockPointer: 507711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Array: 508711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::Reference: 509711c52bb20d0c69063b52a99826fb7d2835501f1John McCall case DeclaratorChunk::MemberPointer: 510711c52bb20d0c69063b52a99826fb7d2835501f1John McCall continue; 511711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 512711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 51391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 5142792fa5115c5de7cbe11d99d23663c569bfb4caeJohn McCall diagnoseBadTypeAttribute(state.getSema(), attr, type); 515711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 516711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 517711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Try to distribute a function type attribute to the innermost 518711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// function chunk or type. Returns true if the attribute was 519711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// distributed, false if no location was found. 520711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool 521711c52bb20d0c69063b52a99826fb7d2835501f1John McCalldistributeFunctionTypeAttrToInnermost(TypeProcessingState &state, 522711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 523711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *&attrList, 524711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 525711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 526711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 527711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Put it on the innermost function chunk, if there is one. 528711c52bb20d0c69063b52a99826fb7d2835501f1John McCall for (unsigned i = 0, e = declarator.getNumTypeObjects(); i != e; ++i) { 529711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &chunk = declarator.getTypeObject(i); 530711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (chunk.Kind != DeclaratorChunk::Function) continue; 531711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 532711c52bb20d0c69063b52a99826fb7d2835501f1John McCall moveAttrFromListToList(attr, attrList, chunk.getAttrListRef()); 533711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 534711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 535711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 536f85e193739c953358c865005855253af4f68a497John McCall if (handleFunctionTypeAttr(state, attr, declSpecType)) { 537f85e193739c953358c865005855253af4f68a497John McCall spliceAttrOutOfList(attr, attrList); 538f85e193739c953358c865005855253af4f68a497John McCall return true; 539f85e193739c953358c865005855253af4f68a497John McCall } 540f85e193739c953358c865005855253af4f68a497John McCall 541f85e193739c953358c865005855253af4f68a497John McCall return false; 542711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 543711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 544711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// A function type attribute was written in the decl spec. Try to 545711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// apply it somewhere. 546711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void 547711c52bb20d0c69063b52a99826fb7d2835501f1John McCalldistributeFunctionTypeAttrFromDeclSpec(TypeProcessingState &state, 548711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 549711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 550711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.saveDeclSpecAttrs(); 551711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 5525c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // C++11 attributes before the decl specifiers actually appertain to 5535c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // the declarators. Move them straight there. We don't support the 5545c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // 'put them wherever you like' semantics we allow for GNU attributes. 5555c52166525f8714c3e3a979b156ec23426947fd3Richard Smith if (attr.isCXX11Attribute()) { 5565c52166525f8714c3e3a979b156ec23426947fd3Richard Smith moveAttrFromListToList(attr, state.getCurrentAttrListRef(), 5575c52166525f8714c3e3a979b156ec23426947fd3Richard Smith state.getDeclarator().getAttrListRef()); 5585c52166525f8714c3e3a979b156ec23426947fd3Richard Smith return; 5595c52166525f8714c3e3a979b156ec23426947fd3Richard Smith } 5605c52166525f8714c3e3a979b156ec23426947fd3Richard Smith 561711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Try to distribute to the innermost. 562711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (distributeFunctionTypeAttrToInnermost(state, attr, 563711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.getCurrentAttrListRef(), 564711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declSpecType)) 565711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 566711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 567711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // If that failed, diagnose the bad attribute when the declarator is 568711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // fully built. 569711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.addIgnoredTypeAttr(attr); 570711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 571711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 572711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// A function type attribute was written on the declarator. Try to 573711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// apply it somewhere. 574711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void 575711c52bb20d0c69063b52a99826fb7d2835501f1John McCalldistributeFunctionTypeAttrFromDeclarator(TypeProcessingState &state, 576711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 577711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 578711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 579711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 580711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Try to distribute to the innermost. 581711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (distributeFunctionTypeAttrToInnermost(state, attr, 582711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.getAttrListRef(), 583711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declSpecType)) 584711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 585711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 586711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // If that failed, diagnose the bad attribute when the declarator is 587711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // fully built. 588711c52bb20d0c69063b52a99826fb7d2835501f1John McCall spliceAttrOutOfList(attr, declarator.getAttrListRef()); 589711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.addIgnoredTypeAttr(attr); 590711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 591711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 592711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// \brief Given that there are attributes written on the declarator 593711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// itself, try to distribute any type attributes to the appropriate 594711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// declarator chunk. 595711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// 596711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// These are attributes like the following: 597711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// int f ATTR; 598711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// int (f ATTR)(); 599711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// but not necessarily this: 600711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// int f() ATTR; 601711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void distributeTypeAttrsFromDeclarator(TypeProcessingState &state, 602711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &declSpecType) { 603711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Collect all the type attributes from the declarator itself. 604711c52bb20d0c69063b52a99826fb7d2835501f1John McCall assert(state.getDeclarator().getAttributes() && "declarator has no attrs!"); 605711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *attr = state.getDeclarator().getAttributes(); 606711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *next; 607711c52bb20d0c69063b52a99826fb7d2835501f1John McCall do { 608711c52bb20d0c69063b52a99826fb7d2835501f1John McCall next = attr->getNext(); 609711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 6105c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // Do not distribute C++11 attributes. They have strict rules for what 6115c52166525f8714c3e3a979b156ec23426947fd3Richard Smith // they appertain to. 6125c52166525f8714c3e3a979b156ec23426947fd3Richard Smith if (attr->isCXX11Attribute()) 6135c52166525f8714c3e3a979b156ec23426947fd3Richard Smith continue; 6145c52166525f8714c3e3a979b156ec23426947fd3Richard Smith 615711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (attr->getKind()) { 616711c52bb20d0c69063b52a99826fb7d2835501f1John McCall OBJC_POINTER_TYPE_ATTRS_CASELIST: 617711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeObjCPointerTypeAttrFromDeclarator(state, *attr, declSpecType); 618711c52bb20d0c69063b52a99826fb7d2835501f1John McCall break; 619711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 6208e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_NSReturnsRetained: 6214e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!state.getSema().getLangOpts().ObjCAutoRefCount) 622f85e193739c953358c865005855253af4f68a497John McCall break; 623f85e193739c953358c865005855253af4f68a497John McCall // fallthrough 624f85e193739c953358c865005855253af4f68a497John McCall 625711c52bb20d0c69063b52a99826fb7d2835501f1John McCall FUNCTION_TYPE_ATTRS_CASELIST: 626711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeFunctionTypeAttrFromDeclarator(state, *attr, declSpecType); 627711c52bb20d0c69063b52a99826fb7d2835501f1John McCall break; 628711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 629711c52bb20d0c69063b52a99826fb7d2835501f1John McCall default: 630711c52bb20d0c69063b52a99826fb7d2835501f1John McCall break; 631711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 632711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } while ((attr = next)); 633711c52bb20d0c69063b52a99826fb7d2835501f1John McCall} 634711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 635711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Add a synthetic '()' to a block-literal declarator if it is 636711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// required, given the return type. 637711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void maybeSynthesizeBlockSignature(TypeProcessingState &state, 638711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType declSpecType) { 639711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 640711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 641711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // First, check whether the declarator would produce a function, 642711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // i.e. whether the innermost semantic chunk is a function. 643711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (declarator.isFunctionDeclarator()) { 644711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // If so, make that declarator a prototyped declarator. 645711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.getFunctionTypeInfo().hasPrototype = true; 646711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 647711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 648711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 649da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // If there are any type objects, the type as written won't name a 650da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // function, regardless of the decl spec type. This is because a 651da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // block signature declarator is always an abstract-declarator, and 652da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // abstract-declarators can't just be parentheses chunks. Therefore 653da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // we need to build a function chunk unless there are no type 654da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // objects and the decl spec type is a function. 655711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!declarator.getNumTypeObjects() && declSpecType->isFunctionType()) 656711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return; 657711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 658da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // Note that there *are* cases with invalid declarators where 659da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // declarators consist solely of parentheses. In general, these 660da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // occur only in failed efforts to make function declarators, so 661da263795abd39437d73d23fcf34dcd3afc1d7df3John McCall // faking up the function chunk is still the right thing to do. 662711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 663711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Otherwise, we need to fake up a function declarator. 66496a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceLocation loc = declarator.getLocStart(); 665711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 666711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // ...and *prepend* it to the declarator. 66759c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara SourceLocation NoLoc; 668711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.AddInnermostTypeInfo(DeclaratorChunk::getFunction( 66959c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*HasProto=*/true, 67059c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*IsAmbiguous=*/false, 67159c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*LParenLoc=*/NoLoc, 67259c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*ArgInfo=*/0, 67359c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*NumArgs=*/0, 67459c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*EllipsisLoc=*/NoLoc, 67559c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*RParenLoc=*/NoLoc, 67659c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*TypeQuals=*/0, 67759c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*RefQualifierIsLvalueRef=*/true, 67859c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*RefQualifierLoc=*/NoLoc, 67959c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*ConstQualifierLoc=*/NoLoc, 68059c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*VolatileQualifierLoc=*/NoLoc, 68159c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*MutableLoc=*/NoLoc, 68259c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara EST_None, 68359c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*ESpecLoc=*/NoLoc, 68459c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*Exceptions=*/0, 68559c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*ExceptionRanges=*/0, 68659c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*NumExceptions=*/0, 68759c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara /*NoexceptExpr=*/0, 68859c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara loc, loc, declarator)); 689711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 690711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // For consistency, make sure the state still has us as processing 691711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // the decl spec. 692711c52bb20d0c69063b52a99826fb7d2835501f1John McCall assert(state.getCurrentChunkIndex() == declarator.getNumTypeObjects() - 1); 693711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.setCurrentChunkIndex(declarator.getNumTypeObjects()); 69404a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall} 69504a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 696930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor/// \brief Convert the specified declspec to the appropriate type 697930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor/// object. 6981dfbd92c83699820bfaa352e83083124e34fc9dcJames Dennett/// \param state Specifies the declarator containing the declaration specifier 6991dfbd92c83699820bfaa352e83083124e34fc9dcJames Dennett/// to be converted, along with other associated processing state. 7005153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner/// \returns The type described by the declaration specifiers. This function 7015153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner/// never returns null. 7028cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidisstatic QualType ConvertDeclSpecToType(TypeProcessingState &state) { 7035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // FIXME: Should move the logic from DeclSpec::Finish to here for validity 7045f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // checking. 705711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 7068cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Sema &S = state.getSema(); 707711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Declarator &declarator = state.getDeclarator(); 708711c52bb20d0c69063b52a99826fb7d2835501f1John McCall const DeclSpec &DS = declarator.getDeclSpec(); 709711c52bb20d0c69063b52a99826fb7d2835501f1John McCall SourceLocation DeclLoc = declarator.getIdentifierLoc(); 7105db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner if (DeclLoc.isInvalid()) 71196a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar DeclLoc = DS.getLocStart(); 71291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 713711c52bb20d0c69063b52a99826fb7d2835501f1John McCall ASTContext &Context = S.Context; 7141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7155db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner QualType Result; 7165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DS.getTypeSpecType()) { 71796b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner case DeclSpec::TST_void: 71896b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner Result = Context.VoidTy; 71996b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner break; 7205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_char: 7215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.getTypeSpecSign() == DeclSpec::TSS_unspecified) 722fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.CharTy; 7235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else if (DS.getTypeSpecSign() == DeclSpec::TSS_signed) 724fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.SignedCharTy; 7255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else { 7265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(DS.getTypeSpecSign() == DeclSpec::TSS_unsigned && 7275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Unknown TSS value"); 728fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.UnsignedCharTy; 7295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 730958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 73164c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis case DeclSpec::TST_wchar: 73264c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis if (DS.getTypeSpecSign() == DeclSpec::TSS_unspecified) 73364c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis Result = Context.WCharTy; 73464c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis else if (DS.getTypeSpecSign() == DeclSpec::TSS_signed) { 735711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecSignLoc(), diag::ext_invalid_sign_spec) 736f3a41af4d5c98a72a1d6720bbbfd658e57ef2541Chris Lattner << DS.getSpecifierName(DS.getTypeSpecType()); 73764c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis Result = Context.getSignedWCharType(); 73864c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis } else { 73964c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis assert(DS.getTypeSpecSign() == DeclSpec::TSS_unsigned && 74064c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis "Unknown TSS value"); 741711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecSignLoc(), diag::ext_invalid_sign_spec) 742f3a41af4d5c98a72a1d6720bbbfd658e57ef2541Chris Lattner << DS.getSpecifierName(DS.getTypeSpecType()); 74364c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis Result = Context.getUnsignedWCharType(); 74464c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis } 74564c438a4be2a871fa43c78264663ba1e9788b94dArgyrios Kyrtzidis break; 746f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith case DeclSpec::TST_char16: 747f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith assert(DS.getTypeSpecSign() == DeclSpec::TSS_unspecified && 748f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith "Unknown TSS value"); 749f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith Result = Context.Char16Ty; 750f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith break; 751f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith case DeclSpec::TST_char32: 752f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith assert(DS.getTypeSpecSign() == DeclSpec::TSS_unspecified && 753f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith "Unknown TSS value"); 754f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith Result = Context.Char32Ty; 755f5c209d23b20ada4a9b6235db50317239cbf6ae1Alisdair Meredith break; 756d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner case DeclSpec::TST_unspecified: 75762f5f7ffad57e0c2af2b308af3735351505937cbChris Lattner // "<proto1,proto2>" is an objc qualified ID with a missing id. 758097e916b617bb4a069a03764024c310ed42a6424Chris Lattner if (DeclSpec::ProtocolQualifierListTy PQ = DS.getProtocolQualifiers()) { 759c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = Context.getObjCObjectType(Context.ObjCBuiltinIdTy, 76031ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky (ObjCProtocolDecl*const*)PQ, 761c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall DS.getNumProtocolQualifiers()); 762c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = Context.getObjCObjectPointerType(Result); 76362f5f7ffad57e0c2af2b308af3735351505937cbChris Lattner break; 76462f5f7ffad57e0c2af2b308af3735351505937cbChris Lattner } 76591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 7665db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner // If this is a missing declspec in a block literal return context, then it 7675db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner // is inferred from the return statements inside the block. 768f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman // The declspec is always missing in a lambda expr context; it is either 769f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman // specified with a trailing return type or inferred. 770f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman if (declarator.getContext() == Declarator::LambdaExprContext || 771f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman isOmittedBlockReturnType(declarator)) { 7725db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner Result = Context.DependentTy; 7735db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner break; 7745db2bb1cb0c040dcbca1b5000f091d6d225b4bfeChris Lattner } 7751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 776d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // Unspecified typespec defaults to int in C90. However, the C90 grammar 777d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // [C90 6.5] only allows a decl-spec if there was *some* type-specifier, 778d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // type-qualifier, or storage-class-specifier. If not, emit an extwarn. 779d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // Note that the one exception to this is function definitions, which are 780d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // allowed to be completely missing a declspec. This is handled in the 781d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // parser already though by it pretending to have seen an 'int' in this 782d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // case. 7834e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().ImplicitInt) { 78435d276f443462249b436951c1c663820569e1768Chris Lattner // In C89 mode, we only warn if there is a completely missing declspec 78535d276f443462249b436951c1c663820569e1768Chris Lattner // when one is not allowed. 7863f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner if (DS.isEmpty()) { 787711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DeclLoc, diag::ext_missing_declspec) 7883f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner << DS.getSourceRange() 78996a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar << FixItHint::CreateInsertion(DS.getLocStart(), "int"); 7903f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner } 7914310f4ee260e6c7ceeaf299e240f4d789ecc730dDouglas Gregor } else if (!DS.hasTypeSpecifier()) { 792d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // C99 and C++ require a type specifier. For example, C99 6.7.2p2 says: 793d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // "At least one type specifier shall be given in the declaration 794d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // specifiers in each declaration, and in the specifier-qualifier list in 795d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner // each struct declaration and type name." 7964310f4ee260e6c7ceeaf299e240f4d789ecc730dDouglas Gregor // FIXME: Does Microsoft really have the implicit int extension in C++? 7974e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().CPlusPlus && 7984e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie !S.getLangOpts().MicrosoftExt) { 799711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DeclLoc, diag::err_missing_type_specifier) 8003f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner << DS.getSourceRange(); 8011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 802b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner // When this occurs in C++ code, often something is very broken with the 803b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner // value being declared, poison it as invalid so we don't get chains of 804b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner // errors. 805711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 806b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner } else { 807711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DeclLoc, diag::ext_missing_type_specifier) 8083f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner << DS.getSourceRange(); 809b78d833b12f7c4baab138f305f72efd49455a3f9Chris Lattner } 810d658b562e80d6ef7a1118e34ff12802c6e2fccedChris Lattner } 8111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // FALL THROUGH. 8133cbc38bd3569d37f53bd76fa89d24803f48f5036Chris Lattner case DeclSpec::TST_int: { 8145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (DS.getTypeSpecSign() != DeclSpec::TSS_unsigned) { 8155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DS.getTypeSpecWidth()) { 816fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_unspecified: Result = Context.IntTy; break; 817fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_short: Result = Context.ShortTy; break; 818fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_long: Result = Context.LongTy; break; 819311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner case DeclSpec::TSW_longlong: 820311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner Result = Context.LongLongTy; 82191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 822e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko // 'long long' is a C99 or C++11 feature. 823e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko if (!S.getLangOpts().C99) { 824e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko if (S.getLangOpts().CPlusPlus) 825e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko S.Diag(DS.getTypeSpecWidthLoc(), 82680ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith S.getLangOpts().CPlusPlus11 ? 827e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko diag::warn_cxx98_compat_longlong : diag::ext_cxx11_longlong); 828e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko else 829e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko S.Diag(DS.getTypeSpecWidthLoc(), diag::ext_c99_longlong); 830e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko } 831311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner break; 8325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } else { 8345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DS.getTypeSpecWidth()) { 835fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_unspecified: Result = Context.UnsignedIntTy; break; 836fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_short: Result = Context.UnsignedShortTy; break; 837fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TSW_long: Result = Context.UnsignedLongTy; break; 838311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner case DeclSpec::TSW_longlong: 839311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner Result = Context.UnsignedLongLongTy; 84091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 841e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko // 'long long' is a C99 or C++11 feature. 842e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko if (!S.getLangOpts().C99) { 843e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko if (S.getLangOpts().CPlusPlus) 844e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko S.Diag(DS.getTypeSpecWidthLoc(), 84580ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith S.getLangOpts().CPlusPlus11 ? 846e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko diag::warn_cxx98_compat_longlong : diag::ext_cxx11_longlong); 847e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko else 848e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko S.Diag(DS.getTypeSpecWidthLoc(), diag::ext_c99_longlong); 849e3b136bd873508c9ac0ee6eba98c2a810a177ebaDmitri Gribenko } 850311157fa6be96e2769bf317390dc9fb85087d5faChris Lattner break; 8515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 8525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 853958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 8543cbc38bd3569d37f53bd76fa89d24803f48f5036Chris Lattner } 8555a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith case DeclSpec::TST_int128: 85684268904947ada7e251932a6f5b0f4364df7a2c7Richard Smith if (!S.PP.getTargetInfo().hasInt128Type()) 85784268904947ada7e251932a6f5b0f4364df7a2c7Richard Smith S.Diag(DS.getTypeSpecTypeLoc(), diag::err_int128_unsupported); 8585a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith if (DS.getTypeSpecSign() == DeclSpec::TSS_unsigned) 8595a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith Result = Context.UnsignedInt128Ty; 8605a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith else 8615a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith Result = Context.Int128Ty; 8625a5a971908a1fd064454db44c42333a3aecf3d5bRichard Smith break; 863aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov case DeclSpec::TST_half: Result = Context.HalfTy; break; 864fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TST_float: Result = Context.FloatTy; break; 865958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner case DeclSpec::TST_double: 866958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner if (DS.getTypeSpecWidth() == DeclSpec::TSW_long) 867fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.LongDoubleTy; 868958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner else 869fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.DoubleTy; 87039d3e7a26c1969fcb76bceb4ee0a410c60ea5954Peter Collingbourne 8714e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().OpenCL && !S.getOpenCLOptions().cl_khr_fp64) { 87239d3e7a26c1969fcb76bceb4ee0a410c60ea5954Peter Collingbourne S.Diag(DS.getTypeSpecTypeLoc(), diag::err_double_requires_fp64); 87339d3e7a26c1969fcb76bceb4ee0a410c60ea5954Peter Collingbourne declarator.setInvalidType(true); 87439d3e7a26c1969fcb76bceb4ee0a410c60ea5954Peter Collingbourne } 875958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 876fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner case DeclSpec::TST_bool: Result = Context.BoolTy; break; // _Bool or bool 8775f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_decimal32: // _Decimal32 8785f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_decimal64: // _Decimal64 8795f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_decimal128: // _Decimal128 880711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecTypeLoc(), diag::err_decimal_unsupported); 8818f12f65fad7bfbbdbd4234efe0d484f68c3924b6Chris Lattner Result = Context.IntTy; 882711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 8838f12f65fad7bfbbdbd4234efe0d484f68c3924b6Chris Lattner break; 88499dc91422144483c20d1c7381bc9ac634b646b04Chris Lattner case DeclSpec::TST_class: 8855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_enum: 8865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclSpec::TST_union: 8876666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos case DeclSpec::TST_struct: 8886666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos case DeclSpec::TST_interface: { 889b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall TypeDecl *D = dyn_cast_or_null<TypeDecl>(DS.getRepAsDecl()); 8906e24726524c2b51b31bb4b622aa678a46b024f42John McCall if (!D) { 8916e24726524c2b51b31bb4b622aa678a46b024f42John McCall // This can happen in C++ with ambiguous lookups. 8926e24726524c2b51b31bb4b622aa678a46b024f42John McCall Result = Context.IntTy; 893711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 8946e24726524c2b51b31bb4b622aa678a46b024f42John McCall break; 8956e24726524c2b51b31bb4b622aa678a46b024f42John McCall } 8966e24726524c2b51b31bb4b622aa678a46b024f42John McCall 897a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner // If the type is deprecated or unavailable, diagnose it. 8980daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara S.DiagnoseUseOfDecl(D, DS.getTypeSpecTypeNameLoc()); 89991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 9005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(DS.getTypeSpecWidth() == 0 && DS.getTypeSpecComplex() == 0 && 901a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner DS.getTypeSpecSign() == 0 && "No qualifiers on tag names!"); 90291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 9035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TypeQuals handled by caller. 904a64ef0ab5cb6ac9cfb7d40661a9152c4aa488386Chris Lattner Result = Context.getTypeDeclType(D); 9052191b20bfb31fc0e22a158f6b4204cd0b7dbd0fdJohn McCall 9060daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara // In both C and C++, make an ElaboratedType. 9070daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara ElaboratedTypeKeyword Keyword 9080daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara = ElaboratedType::getKeywordForTypeSpec(DS.getTypeSpecType()); 9090daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara Result = S.getElaboratedType(Keyword, DS.getTypeSpecScope(), Result); 910958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 9111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 9121a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor case DeclSpec::TST_typename: { 9135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(DS.getTypeSpecWidth() == 0 && DS.getTypeSpecComplex() == 0 && 9145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer DS.getTypeSpecSign() == 0 && 9155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer "Can't handle qualifiers on typedef names yet!"); 916711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Result = S.GetTypeFromParser(DS.getRepAsType()); 91727940d2fb346325d6001a7661e4ada099cd8e59cJohn McCall if (Result.isNull()) 918711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 91927940d2fb346325d6001a7661e4ada099cd8e59cJohn McCall else if (DeclSpec::ProtocolQualifierListTy PQ 92027940d2fb346325d6001a7661e4ada099cd8e59cJohn McCall = DS.getProtocolQualifiers()) { 921c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall if (const ObjCObjectType *ObjT = Result->getAs<ObjCObjectType>()) { 922c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall // Silently drop any existing protocol qualifiers. 923c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall // TODO: determine whether that's the right thing to do. 924c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall if (ObjT->getNumProtocols()) 925c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = ObjT->getBaseType(); 926c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall 927c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall if (DS.getNumProtocolQualifiers()) 928c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = Context.getObjCObjectType(Result, 92931ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky (ObjCProtocolDecl*const*) PQ, 930c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall DS.getNumProtocolQualifiers()); 931c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else if (Result->isObjCIdType()) { 932ae4da6150bb837311a2f0f958b01a2989066ba90Chris Lattner // id<protocol-list> 933c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = Context.getObjCObjectType(Context.ObjCBuiltinIdTy, 93431ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky (ObjCProtocolDecl*const*) PQ, 935c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall DS.getNumProtocolQualifiers()); 936c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = Context.getObjCObjectPointerType(Result); 937c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else if (Result->isObjCClassType()) { 9384262a07621043c19292f5fd90b1e426d65cd366cSteve Naroff // Class<protocol-list> 939c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = Context.getObjCObjectType(Context.ObjCBuiltinClassTy, 94031ba6135375433b617a8587ea6cc836a014ebd86Roman Divacky (ObjCProtocolDecl*const*) PQ, 941c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall DS.getNumProtocolQualifiers()); 942c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Result = Context.getObjCObjectPointerType(Result); 9433f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner } else { 944711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DeclLoc, diag::err_invalid_protocol_qualifiers) 9453f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner << DS.getSourceRange(); 946711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 9473f84ad22acc25353a47ee88f55ab05dffef5d9a9Chris Lattner } 948c569249ca0ab755ac79d8cbbfcb2bcae19743624Fariborz Jahanian } 9491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // TypeQuals handled by caller. 951958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 9525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 953958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner case DeclSpec::TST_typeofType: 954e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis // FIXME: Preserve type source info. 955711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Result = S.GetTypeFromParser(DS.getRepAsType()); 956958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner assert(!Result.isNull() && "Didn't get a type for typeof?"); 957730e175910936eae49e65caea8b2ba81c67edff7Fariborz Jahanian if (!Result->isDependentType()) 958730e175910936eae49e65caea8b2ba81c67edff7Fariborz Jahanian if (const TagType *TT = Result->getAs<TagType>()) 959711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.DiagnoseUseOfDecl(TT->getDecl(), DS.getTypeSpecTypeLoc()); 960d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff // TypeQuals handled by caller. 961fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.getTypeOfType(Result); 962958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 963d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff case DeclSpec::TST_typeofExpr: { 964b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Expr *E = DS.getRepAsExpr(); 965d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff assert(E && "Didn't get an expression for typeof?"); 966d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff // TypeQuals handled by caller. 967711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Result = S.BuildTypeofExprType(E, DS.getTypeSpecTypeLoc()); 9684b52e25f3b05ab0f9d2492276a52323a50a84fb7Douglas Gregor if (Result.isNull()) { 9694b52e25f3b05ab0f9d2492276a52323a50a84fb7Douglas Gregor Result = Context.IntTy; 970711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 9714b52e25f3b05ab0f9d2492276a52323a50a84fb7Douglas Gregor } 972958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner break; 973d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff } 9746fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson case DeclSpec::TST_decltype: { 975b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Expr *E = DS.getRepAsExpr(); 9766fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson assert(E && "Didn't get an expression for decltype?"); 9776fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson // TypeQuals handled by caller. 978711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Result = S.BuildDecltypeType(E, DS.getTypeSpecTypeLoc()); 979af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson if (Result.isNull()) { 980af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson Result = Context.IntTy; 981711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 982af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson } 9836fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson break; 9846fd634f4ac59f5923cffadadb99d19f23c18707aAnders Carlsson } 985ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt case DeclSpec::TST_underlyingType: 986db5d44b775c60166074acd184ca9f1981c10c2a7Sean Hunt Result = S.GetTypeFromParser(DS.getRepAsType()); 987db5d44b775c60166074acd184ca9f1981c10c2a7Sean Hunt assert(!Result.isNull() && "Didn't get a type for __underlying_type?"); 988ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Result = S.BuildUnaryTransformType(Result, 989ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt UnaryTransformType::EnumUnderlyingType, 990ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt DS.getTypeSpecTypeLoc()); 991ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt if (Result.isNull()) { 992ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Result = Context.IntTy; 993ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt declarator.setInvalidType(true); 994db5d44b775c60166074acd184ca9f1981c10c2a7Sean Hunt } 99591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier break; 996db5d44b775c60166074acd184ca9f1981c10c2a7Sean Hunt 997e89d15944dd3be750a09805ad21222d2fa9321faAnders Carlsson case DeclSpec::TST_auto: { 998e89d15944dd3be750a09805ad21222d2fa9321faAnders Carlsson // TypeQuals handled by caller. 99934b41d939a1328f484511c6002ba2456db879a29Richard Smith Result = Context.getAutoType(QualType()); 1000e89d15944dd3be750a09805ad21222d2fa9321faAnders Carlsson break; 1001e89d15944dd3be750a09805ad21222d2fa9321faAnders Carlsson } 10021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1003a5fc472b353b88be3b4981da946fb01f5a5cc0c6John McCall case DeclSpec::TST_unknown_anytype: 1004a5fc472b353b88be3b4981da946fb01f5a5cc0c6John McCall Result = Context.UnknownAnyTy; 1005a5fc472b353b88be3b4981da946fb01f5a5cc0c6John McCall break; 1006a5fc472b353b88be3b4981da946fb01f5a5cc0c6John McCall 1007b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman case DeclSpec::TST_atomic: 1008b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman Result = S.GetTypeFromParser(DS.getRepAsType()); 1009b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman assert(!Result.isNull() && "Didn't get a type for _Atomic?"); 1010b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman Result = S.BuildAtomicType(Result, DS.getTypeSpecTypeLoc()); 1011b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman if (Result.isNull()) { 1012b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman Result = Context.IntTy; 1013b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman declarator.setInvalidType(true); 1014b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman } 101591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier break; 1016b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei 1017b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei case DeclSpec::TST_image1d_t: 1018b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei Result = Context.OCLImage1dTy; 1019b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei break; 1020b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei 1021b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei case DeclSpec::TST_image1d_array_t: 1022b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei Result = Context.OCLImage1dArrayTy; 1023b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei break; 1024b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei 1025b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei case DeclSpec::TST_image1d_buffer_t: 1026b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei Result = Context.OCLImage1dBufferTy; 1027b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei break; 1028b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei 1029b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei case DeclSpec::TST_image2d_t: 1030b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei Result = Context.OCLImage2dTy; 1031b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei break; 1032b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei 1033b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei case DeclSpec::TST_image2d_array_t: 1034b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei Result = Context.OCLImage2dArrayTy; 1035b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei break; 1036b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei 1037b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei case DeclSpec::TST_image3d_t: 1038b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei Result = Context.OCLImage3dTy; 1039b13621d08e20ac7aa550e05896de8a57ee99c1e8Guy Benyei break; 1040b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman 104121f18c4fda167dc5f72feddbd6a7ac1b63200a0dGuy Benyei case DeclSpec::TST_sampler_t: 104221f18c4fda167dc5f72feddbd6a7ac1b63200a0dGuy Benyei Result = Context.OCLSamplerTy; 104321f18c4fda167dc5f72feddbd6a7ac1b63200a0dGuy Benyei break; 104421f18c4fda167dc5f72feddbd6a7ac1b63200a0dGuy Benyei 1045e6b9d802fb7b16d93474c4f1c179ab36202e8a8bGuy Benyei case DeclSpec::TST_event_t: 1046e6b9d802fb7b16d93474c4f1c179ab36202e8a8bGuy Benyei Result = Context.OCLEventTy; 1047e6b9d802fb7b16d93474c4f1c179ab36202e8a8bGuy Benyei break; 1048e6b9d802fb7b16d93474c4f1c179ab36202e8a8bGuy Benyei 1049809070a886684cb5b92eb0e00a6581ab1fa6b17aDouglas Gregor case DeclSpec::TST_error: 10505153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner Result = Context.IntTy; 1051711c52bb20d0c69063b52a99826fb7d2835501f1John McCall declarator.setInvalidType(true); 10525153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner break; 10535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 10541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1055958858e04e9f98a42031ba69779e49c21f01ca6cChris Lattner // Handle complex types. 1056f244cd7e54753caf6edb76df430dea2f43bb82a8Douglas Gregor if (DS.getTypeSpecComplex() == DeclSpec::TSC_complex) { 10574e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (S.getLangOpts().Freestanding) 1058711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecComplexLoc(), diag::ext_freestanding_complex); 1059fab5b45729db4e24ba43bb94d1bce5f73106be78Chris Lattner Result = Context.getComplexType(Result); 106082287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson } else if (DS.isTypeAltiVecVector()) { 106182287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson unsigned typeSize = static_cast<unsigned>(Context.getTypeSize(Result)); 106282287d19ded35248c4ce6a425ce74116a13ce44eJohn Thompson assert(typeSize > 0 && "type size for vector must be greater than 0 bits"); 1063e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson VectorType::VectorKind VecKind = VectorType::AltiVecVector; 1064788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner if (DS.isTypeAltiVecPixel()) 1065e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson VecKind = VectorType::AltiVecPixel; 1066788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner else if (DS.isTypeAltiVecBool()) 1067e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson VecKind = VectorType::AltiVecBool; 1068e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson Result = Context.getVectorType(Result, 128/typeSize, VecKind); 1069f244cd7e54753caf6edb76df430dea2f43bb82a8Douglas Gregor } 10701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 107147423bdaa06a3b9c2a859b57c17fc570094dad1cArgyrios Kyrtzidis // FIXME: Imaginary. 107247423bdaa06a3b9c2a859b57c17fc570094dad1cArgyrios Kyrtzidis if (DS.getTypeSpecComplex() == DeclSpec::TSC_imaginary) 1073711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(DS.getTypeSpecComplexLoc(), diag::err_imaginary_not_supported); 10741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1075711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Before we process any type attributes, synthesize a block literal 1076711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // function declarator if necessary. 1077711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (declarator.getContext() == Declarator::BlockLiteralContext) 1078711c52bb20d0c69063b52a99826fb7d2835501f1John McCall maybeSynthesizeBlockSignature(state, Result); 1079711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 1080711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Apply any type attributes from the decl spec. This may cause the 1081711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // list of type attributes to be temporarily saved while the type 1082711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // attributes are pushed around. 1083711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (AttributeList *attrs = DS.getAttributes().getList()) 1084f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith processTypeAttrs(state, Result, TAL_DeclSpec, attrs); 10851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 108696b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // Apply const/volatile/restrict qualifiers to T. 108796b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner if (unsigned TypeQuals = DS.getTypeQualifiers()) { 108896b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner 108996b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // Warn about CV qualifiers on functions: C99 6.7.3p8: "If the specification 109096b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // of a function type includes any type qualifiers, the behavior is 109196b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner // undefined." 109296b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner if (Result->isFunctionType() && TypeQuals) { 10930953e767ff7817f97b3ab20896b229891eeff45bJohn McCall if (TypeQuals & DeclSpec::TQ_const) 10944cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith S.Diag(DS.getConstSpecLoc(), diag::warn_typecheck_function_qualifiers) 10954cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith << Result << DS.getSourceRange(); 10960953e767ff7817f97b3ab20896b229891eeff45bJohn McCall else if (TypeQuals & DeclSpec::TQ_volatile) 10974cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith S.Diag(DS.getVolatileSpecLoc(), diag::warn_typecheck_function_qualifiers) 10984cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith << Result << DS.getSourceRange(); 10990953e767ff7817f97b3ab20896b229891eeff45bJohn McCall else { 11004cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith assert((TypeQuals & (DeclSpec::TQ_restrict | DeclSpec::TQ_atomic)) && 11014cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith "Has CVRA quals but not C, V, R, or A?"); 11024cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // No diagnostic; we'll diagnose 'restrict' or '_Atomic' applied to a 11034cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // function type later, in BuildQualifiedType. 110496b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 110596b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 11061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1107f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // C++ [dcl.ref]p1: 1108f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // Cv-qualified references are ill-formed except when the 1109f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // cv-qualifiers are introduced through the use of a typedef 1110f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // (7.1.3) or of a template type argument (14.3), in which 1111f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor // case the cv-qualifiers are ignored. 11121a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor // FIXME: Shouldn't we be checking SCS_typedef here? 11131a51b4a11b7db25cac2134249711ecaaf9d1c0a8Douglas Gregor if (DS.getTypeSpecType() == DeclSpec::TST_typename && 1114f1f9b4e5c7fd087e78f2e387c01098d49d41e784Douglas Gregor TypeQuals && Result->isReferenceType()) { 11150953e767ff7817f97b3ab20896b229891eeff45bJohn McCall TypeQuals &= ~DeclSpec::TQ_const; 11160953e767ff7817f97b3ab20896b229891eeff45bJohn McCall TypeQuals &= ~DeclSpec::TQ_volatile; 11174cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith TypeQuals &= ~DeclSpec::TQ_atomic; 11181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 11191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1120bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman // C90 6.5.3 constraints: "The same type qualifier shall not appear more 1121bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman // than once in the same specifier-list or qualifier-list, either directly 1122bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman // or via one or more typedefs." 112391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier if (!S.getLangOpts().C99 && !S.getLangOpts().CPlusPlus 1124bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman && TypeQuals & Result.getCVRQualifiers()) { 1125bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman if (TypeQuals & DeclSpec::TQ_const && Result.isConstQualified()) { 112691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier S.Diag(DS.getConstSpecLoc(), diag::ext_duplicate_declspec) 1127bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman << "const"; 1128bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman } 1129bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman 1130bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman if (TypeQuals & DeclSpec::TQ_volatile && Result.isVolatileQualified()) { 113191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier S.Diag(DS.getVolatileSpecLoc(), diag::ext_duplicate_declspec) 1132bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman << "volatile"; 1133bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman } 1134bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman 11354cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // C90 doesn't have restrict nor _Atomic, so it doesn't force us to 11364cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // produce a warning in this case. 1137bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman } 1138bc1029b4a47282cb4ce27c7014acb864b10a4043Eli Friedman 11394cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith QualType Qualified = S.BuildQualifiedType(Result, DeclLoc, TypeQuals, &DS); 11404cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 11414cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // If adding qualifiers fails, just use the unqualified type. 11424cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith if (Qualified.isNull()) 11434cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith declarator.setInvalidType(true); 11444cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith else 11454cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith Result = Qualified; 114696b77fc05ed4a052a9e614f72b0e83572408ce48Chris Lattner } 11470953e767ff7817f97b3ab20896b229891eeff45bJohn McCall 1148f1d705c3e2276f7f5b97b8b3394b9b3068fdf25bChris Lattner return Result; 1149f1d705c3e2276f7f5b97b8b3394b9b3068fdf25bChris Lattner} 1150f1d705c3e2276f7f5b97b8b3394b9b3068fdf25bChris Lattner 1151cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregorstatic std::string getPrintableNameForEntity(DeclarationName Entity) { 1152cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (Entity) 1153cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return Entity.getAsString(); 11541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1155cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return "type name"; 1156cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 1157cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 11582865474261a608c7873b87ba4af110d17907896dJohn McCallQualType Sema::BuildQualifiedType(QualType T, SourceLocation Loc, 115993d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith Qualifiers Qs, const DeclSpec *DS) { 11602865474261a608c7873b87ba4af110d17907896dJohn McCall // Enforce C99 6.7.3p2: "Types other than pointer types derived from 11612865474261a608c7873b87ba4af110d17907896dJohn McCall // object or incomplete types shall not be restrict-qualified." 11622865474261a608c7873b87ba4af110d17907896dJohn McCall if (Qs.hasRestrict()) { 11632865474261a608c7873b87ba4af110d17907896dJohn McCall unsigned DiagID = 0; 11642865474261a608c7873b87ba4af110d17907896dJohn McCall QualType ProblemTy; 11652865474261a608c7873b87ba4af110d17907896dJohn McCall 116693d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith if (T->isAnyPointerType() || T->isReferenceType() || 116793d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith T->isMemberPointerType()) { 116893d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith QualType EltTy; 116993d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith if (T->isObjCObjectPointerType()) 117093d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith EltTy = T; 117193d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith else if (const MemberPointerType *PTy = T->getAs<MemberPointerType>()) 117293d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith EltTy = PTy->getPointeeType(); 117393d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith else 117493d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith EltTy = T->getPointeeType(); 117593d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith 117693d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith // If we have a pointer or reference, the pointee must have an object 117793d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith // incomplete type. 117893d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith if (!EltTy->isIncompleteOrObjectType()) { 11792865474261a608c7873b87ba4af110d17907896dJohn McCall DiagID = diag::err_typecheck_invalid_restrict_invalid_pointee; 118093d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith ProblemTy = EltTy; 118191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier } 118293d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith } else if (!T->isDependentType()) { 118393d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith DiagID = diag::err_typecheck_invalid_restrict_not_pointer; 11842865474261a608c7873b87ba4af110d17907896dJohn McCall ProblemTy = T; 11852865474261a608c7873b87ba4af110d17907896dJohn McCall } 11862865474261a608c7873b87ba4af110d17907896dJohn McCall 11872865474261a608c7873b87ba4af110d17907896dJohn McCall if (DiagID) { 118893d6b07cd79d74e343d81c0e8fb5365376a33097Richard Smith Diag(DS ? DS->getRestrictSpecLoc() : Loc, DiagID) << ProblemTy; 11892865474261a608c7873b87ba4af110d17907896dJohn McCall Qs.removeRestrict(); 11902865474261a608c7873b87ba4af110d17907896dJohn McCall } 11912865474261a608c7873b87ba4af110d17907896dJohn McCall } 11922865474261a608c7873b87ba4af110d17907896dJohn McCall 11932865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getQualifiedType(T, Qs); 11942865474261a608c7873b87ba4af110d17907896dJohn McCall} 11952865474261a608c7873b87ba4af110d17907896dJohn McCall 11964cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard SmithQualType Sema::BuildQualifiedType(QualType T, SourceLocation Loc, 11974cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith unsigned CVRA, const DeclSpec *DS) { 11984cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // Convert from DeclSpec::TQ to Qualifiers::TQ by just dropping TQ_atomic. 11994cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith unsigned CVR = CVRA & ~DeclSpec::TQ_atomic; 12004cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 12014cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // C11 6.7.3/5: 12024cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // If the same qualifier appears more than once in the same 12034cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // specifier-qualifier-list, either directly or via one or more typedefs, 12044cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // the behavior is the same as if it appeared only once. 12054cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // 12064cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // It's not specified what happens when the _Atomic qualifier is applied to 12074cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // a type specified with the _Atomic specifier, but we assume that this 12084cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // should be treated as if the _Atomic qualifier appeared multiple times. 12094cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith if (CVRA & DeclSpec::TQ_atomic && !T->isAtomicType()) { 12104cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // C11 6.7.3/5: 12114cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // If other qualifiers appear along with the _Atomic qualifier in a 12124cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // specifier-qualifier-list, the resulting type is the so-qualified 12134cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // atomic type. 12144cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // 12154cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // Don't need to worry about array types here, since _Atomic can't be 12164cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // applied to such types. 12174cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith SplitQualType Split = T.getSplitUnqualifiedType(); 12184cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith T = BuildAtomicType(QualType(Split.Ty, 0), 12194cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith DS ? DS->getAtomicSpecLoc() : Loc); 12204cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith if (T.isNull()) 12214cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith return T; 12224cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith Split.Quals.addCVRQualifiers(CVR); 12234cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith return BuildQualifiedType(T, Loc, Split.Quals); 12244cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith } 12254cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 12264cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith return BuildQualifiedType(T, Loc, Qualifiers::fromCVRMask(CVR), DS); 12274cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith} 12284cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 1229075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara/// \brief Build a paren type including \p T. 1230075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo BagnaraQualType Sema::BuildParenType(QualType T) { 1231075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara return Context.getParenType(T); 1232075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara} 1233075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara 1234f85e193739c953358c865005855253af4f68a497John McCall/// Given that we're building a pointer or reference to the given 1235f85e193739c953358c865005855253af4f68a497John McCallstatic QualType inferARCLifetimeForPointee(Sema &S, QualType type, 1236f85e193739c953358c865005855253af4f68a497John McCall SourceLocation loc, 1237f85e193739c953358c865005855253af4f68a497John McCall bool isReference) { 1238f85e193739c953358c865005855253af4f68a497John McCall // Bail out if retention is unrequired or already specified. 1239f85e193739c953358c865005855253af4f68a497John McCall if (!type->isObjCLifetimeType() || 1240f85e193739c953358c865005855253af4f68a497John McCall type.getObjCLifetime() != Qualifiers::OCL_None) 1241f85e193739c953358c865005855253af4f68a497John McCall return type; 1242f85e193739c953358c865005855253af4f68a497John McCall 1243f85e193739c953358c865005855253af4f68a497John McCall Qualifiers::ObjCLifetime implicitLifetime = Qualifiers::OCL_None; 1244f85e193739c953358c865005855253af4f68a497John McCall 1245f85e193739c953358c865005855253af4f68a497John McCall // If the object type is const-qualified, we can safely use 1246f85e193739c953358c865005855253af4f68a497John McCall // __unsafe_unretained. This is safe (because there are no read 1247f85e193739c953358c865005855253af4f68a497John McCall // barriers), and it'll be safe to coerce anything but __weak* to 1248f85e193739c953358c865005855253af4f68a497John McCall // the resulting type. 1249f85e193739c953358c865005855253af4f68a497John McCall if (type.isConstQualified()) { 1250f85e193739c953358c865005855253af4f68a497John McCall implicitLifetime = Qualifiers::OCL_ExplicitNone; 1251f85e193739c953358c865005855253af4f68a497John McCall 1252f85e193739c953358c865005855253af4f68a497John McCall // Otherwise, check whether the static type does not require 1253f85e193739c953358c865005855253af4f68a497John McCall // retaining. This currently only triggers for Class (possibly 1254f85e193739c953358c865005855253af4f68a497John McCall // protocol-qualifed, and arrays thereof). 1255f85e193739c953358c865005855253af4f68a497John McCall } else if (type->isObjCARCImplicitlyUnretainedType()) { 1256f85e193739c953358c865005855253af4f68a497John McCall implicitLifetime = Qualifiers::OCL_ExplicitNone; 12575b76f373d23cc3b292ecf523349aaaa388eea375Argyrios Kyrtzidis 1258ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman // If we are in an unevaluated context, like sizeof, skip adding a 1259ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman // qualification. 126071f55f771794674a410171dbf3cb5dbedf95d033David Blaikie } else if (S.isUnevaluatedContext()) { 1261ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman return type; 1262f85e193739c953358c865005855253af4f68a497John McCall 1263e8c904ff343f440e213b88e6963f5ebfbec7ae60John McCall // If that failed, give an error and recover using __strong. __strong 1264e8c904ff343f440e213b88e6963f5ebfbec7ae60John McCall // is the option most likely to prevent spurious second-order diagnostics, 1265e8c904ff343f440e213b88e6963f5ebfbec7ae60John McCall // like when binding a reference to a field. 1266f85e193739c953358c865005855253af4f68a497John McCall } else { 1267f85e193739c953358c865005855253af4f68a497John McCall // These types can show up in private ivars in system headers, so 1268f85e193739c953358c865005855253af4f68a497John McCall // we need this to not be an error in those cases. Instead we 1269f85e193739c953358c865005855253af4f68a497John McCall // want to delay. 1270f85e193739c953358c865005855253af4f68a497John McCall if (S.DelayedDiagnostics.shouldDelayDiagnostics()) { 1271ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman S.DelayedDiagnostics.add( 1272ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman sema::DelayedDiagnostic::makeForbiddenType(loc, 1273ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman diag::err_arc_indirect_no_ownership, type, isReference)); 1274f85e193739c953358c865005855253af4f68a497John McCall } else { 1275ef331b783bb96a0f0e34afdb7ef46677dc4764cbEli Friedman S.Diag(loc, diag::err_arc_indirect_no_ownership) << type << isReference; 1276f85e193739c953358c865005855253af4f68a497John McCall } 1277e8c904ff343f440e213b88e6963f5ebfbec7ae60John McCall implicitLifetime = Qualifiers::OCL_Strong; 1278f85e193739c953358c865005855253af4f68a497John McCall } 1279f85e193739c953358c865005855253af4f68a497John McCall assert(implicitLifetime && "didn't infer any lifetime!"); 1280f85e193739c953358c865005855253af4f68a497John McCall 1281f85e193739c953358c865005855253af4f68a497John McCall Qualifiers qs; 1282f85e193739c953358c865005855253af4f68a497John McCall qs.addObjCLifetime(implicitLifetime); 1283f85e193739c953358c865005855253af4f68a497John McCall return S.Context.getQualifiedType(type, qs); 1284f85e193739c953358c865005855253af4f68a497John McCall} 1285f85e193739c953358c865005855253af4f68a497John McCall 1286cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \brief Build a pointer type. 1287cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1288cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param T The type to which we'll be building a pointer. 1289cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1290cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Loc The location of the entity whose type involves this 1291cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// pointer type or, if there is no such entity, the location of the 1292cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type that will have pointer type. 1293cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1294cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Entity The name of the entity that involves the pointer 1295cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type, if known. 1296cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1297cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \returns A suitable pointer type, if there are no 1298cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// errors. Otherwise, returns a NULL type. 12992865474261a608c7873b87ba4af110d17907896dJohn McCallQualType Sema::BuildPointerType(QualType T, 1300cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor SourceLocation Loc, DeclarationName Entity) { 1301cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T->isReferenceType()) { 1302cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C++ 8.3.2p4: There shall be no ... pointers to references ... 1303cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_illegal_decl_pointer_to_reference) 1304ac406052f7b980f8caa6b07b4a8d0867d53852c4John McCall << getPrintableNameForEntity(Entity) << T; 1305cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 1306cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 1307cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1308c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall assert(!T->isObjCObjectType() && "Should build ObjCObjectPointerType"); 130992e986e0adb79e8a47f738bd608e6c97c547641dDouglas Gregor 1310f85e193739c953358c865005855253af4f68a497John McCall // In ARC, it is forbidden to build pointers to unqualified pointers. 13114e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjCAutoRefCount) 1312f85e193739c953358c865005855253af4f68a497John McCall T = inferARCLifetimeForPointee(*this, T, Loc, /*reference*/ false); 1313f85e193739c953358c865005855253af4f68a497John McCall 1314cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // Build the pointer type. 13152865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getPointerType(T); 1316cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 1317cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1318cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \brief Build a reference type. 1319cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1320cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param T The type to which we'll be building a reference. 1321cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1322cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Loc The location of the entity whose type involves this 1323cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// reference type or, if there is no such entity, the location of the 1324cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type that will have reference type. 1325cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1326cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Entity The name of the entity that involves the reference 1327cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type, if known. 1328cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1329cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \returns A suitable reference type, if there are no 1330cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// errors. Otherwise, returns a NULL type. 133154e14c4db764c0636160d26c5bbf491637c83a76John McCallQualType Sema::BuildReferenceType(QualType T, bool SpelledAsLValue, 13322865474261a608c7873b87ba4af110d17907896dJohn McCall SourceLocation Loc, 133354e14c4db764c0636160d26c5bbf491637c83a76John McCall DeclarationName Entity) { 133491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier assert(Context.getCanonicalType(T) != Context.OverloadTy && 13359625e44c0252485277a340746ed8ac950686156fDouglas Gregor "Unresolved overloaded function type"); 133691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 133769d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // C++0x [dcl.ref]p6: 133891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // If a typedef (7.1.3), a type template-parameter (14.3.1), or a 133991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // decltype-specifier (7.1.6.2) denotes a type TR that is a reference to a 134091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // type T, an attempt to create the type "lvalue reference to cv TR" creates 134191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // the type "lvalue reference to T", while an attempt to create the type 134269d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // "rvalue reference to cv TR" creates the type TR. 134354e14c4db764c0636160d26c5bbf491637c83a76John McCall bool LValueRef = SpelledAsLValue || T->getAs<LValueReferenceType>(); 134454e14c4db764c0636160d26c5bbf491637c83a76John McCall 134554e14c4db764c0636160d26c5bbf491637c83a76John McCall // C++ [dcl.ref]p4: There shall be no references to references. 134654e14c4db764c0636160d26c5bbf491637c83a76John McCall // 134754e14c4db764c0636160d26c5bbf491637c83a76John McCall // According to C++ DR 106, references to references are only 134854e14c4db764c0636160d26c5bbf491637c83a76John McCall // diagnosed when they are written directly (e.g., "int & &"), 134954e14c4db764c0636160d26c5bbf491637c83a76John McCall // but not when they happen via a typedef: 135054e14c4db764c0636160d26c5bbf491637c83a76John McCall // 135154e14c4db764c0636160d26c5bbf491637c83a76John McCall // typedef int& intref; 135254e14c4db764c0636160d26c5bbf491637c83a76John McCall // typedef intref& intref2; 135354e14c4db764c0636160d26c5bbf491637c83a76John McCall // 135454e14c4db764c0636160d26c5bbf491637c83a76John McCall // Parser::ParseDeclaratorInternal diagnoses the case where 135554e14c4db764c0636160d26c5bbf491637c83a76John McCall // references are written directly; here, we handle the 135669d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // collapsing of references-to-references as described in C++0x. 135769d831645f429d3b806d2ae220aee45ca44f8c6cDouglas Gregor // DR 106 and 540 introduce reference-collapsing into C++98/03. 1358cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1359cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C++ [dcl.ref]p1: 136033a3138a0862cafdd9ff1332b834454a79cd2cdcEli Friedman // A declarator that specifies the type "reference to cv void" 1361cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // is ill-formed. 1362cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T->isVoidType()) { 1363cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_reference_to_void); 1364cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 1365cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 1366cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1367f85e193739c953358c865005855253af4f68a497John McCall // In ARC, it is forbidden to build references to unqualified pointers. 13684e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjCAutoRefCount) 1369f85e193739c953358c865005855253af4f68a497John McCall T = inferARCLifetimeForPointee(*this, T, Loc, /*reference*/ true); 1370f85e193739c953358c865005855253af4f68a497John McCall 1371cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // Handle restrict on references. 13727c80bd64032e610c0dbd74fc0ef6ea334447f2fdSebastian Redl if (LValueRef) 13732865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getLValueReferenceType(T, SpelledAsLValue); 13742865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getRValueReferenceType(T); 1375cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 1376cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1377e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner/// Check whether the specified array size makes the array type a VLA. If so, 1378e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner/// return true, if not, return the size of the array in SizeVal. 1379282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smithstatic bool isArraySizeVLA(Sema &S, Expr *ArraySize, llvm::APSInt &SizeVal) { 1380282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // If the size is an ICE, it certainly isn't a VLA. If we're in a GNU mode 1381282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // (like gnu99, but not c99) accept any evaluatable value as an extension. 1382ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor class VLADiagnoser : public Sema::VerifyICEDiagnoser { 1383ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor public: 1384ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor VLADiagnoser() : Sema::VerifyICEDiagnoser(true) {} 138591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1386ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor virtual void diagnoseNotICE(Sema &S, SourceLocation Loc, SourceRange SR) { 1387ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor } 138891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1389ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor virtual void diagnoseFold(Sema &S, SourceLocation Loc, SourceRange SR) { 1390ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor S.Diag(Loc, diag::ext_vla_folded_to_constant) << SR; 1391ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor } 1392ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor } Diagnoser; 139391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1394ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor return S.VerifyIntegerConstantExpression(ArraySize, &SizeVal, Diagnoser, 1395ab41fe914f63bb470dfa7e400876ada72f57a931Douglas Gregor S.LangOpts.GNUMode).isInvalid(); 1396e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner} 1397e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner 1398e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner 1399cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \brief Build an array type. 1400cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1401cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param T The type of each element in the array. 1402cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1403cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param ASM C99 array size modifier (e.g., '*', 'static'). 14041eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// 14051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// \param ArraySize Expression describing the size of the array. 1406cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1407efce31f51d6e7e31e125f96c20f6cdab3ead0a47James Dennett/// \param Brackets The range from the opening '[' to the closing ']'. 1408cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1409cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \param Entity The name of the entity that involves the array 1410cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// type, if known. 1411cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// 1412cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// \returns A suitable array type, if there are no errors. Otherwise, 1413cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor/// returns a NULL type. 1414cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas GregorQualType Sema::BuildArrayType(QualType T, ArrayType::ArraySizeModifier ASM, 1415cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Expr *ArraySize, unsigned Quals, 14167e7eb3da052a6d80ddf2377cab0384c798f73f75Douglas Gregor SourceRange Brackets, DeclarationName Entity) { 14170953e767ff7817f97b3ab20896b229891eeff45bJohn McCall 14187e7eb3da052a6d80ddf2377cab0384c798f73f75Douglas Gregor SourceLocation Loc = Brackets.getBegin(); 14194e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus) { 1420138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // C++ [dcl.array]p1: 1421138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // T is called the array element type; this type shall not be a reference 142291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // type, the (possibly cv-qualified) type void, a function type or an 1423138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // abstract class type. 1424138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // 1425bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // C++ [dcl.array]p3: 1426bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // When several "array of" specifications are adjacent, [...] only the 1427bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // first of the constant expressions that specify the bounds of the arrays 1428bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // may be omitted. 1429bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith // 1430138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // Note: function types are handled in the common path with C. 1431138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor if (T->isReferenceType()) { 1432138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor Diag(Loc, diag::err_illegal_decl_array_of_references) 1433138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor << getPrintableNameForEntity(Entity) << T; 1434138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor return QualType(); 1435138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor } 143691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1437bb35151a166db2b4fee043bc90e60858ac2b7a89Richard Smith if (T->isVoidType() || T->isIncompleteArrayType()) { 1438923d56d436f750bc1f29db50e641078725558a1bSebastian Redl Diag(Loc, diag::err_illegal_decl_array_incomplete_type) << T; 1439923d56d436f750bc1f29db50e641078725558a1bSebastian Redl return QualType(); 1440923d56d436f750bc1f29db50e641078725558a1bSebastian Redl } 144191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 144291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier if (RequireNonAbstractType(Brackets.getBegin(), T, 1443138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor diag::err_array_of_abstract_type)) 1444138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor return QualType(); 144591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1446923d56d436f750bc1f29db50e641078725558a1bSebastian Redl } else { 1447138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // C99 6.7.5.2p1: If the element type is an incomplete or function type, 1448138bb2366baa3856088bae94f36f2d96b2c995b9Douglas Gregor // reject it (e.g. void ary[7], struct foo ary[7], void ary[7]()) 1449923d56d436f750bc1f29db50e641078725558a1bSebastian Redl if (RequireCompleteType(Loc, T, 1450923d56d436f750bc1f29db50e641078725558a1bSebastian Redl diag::err_illegal_decl_array_incomplete_type)) 1451923d56d436f750bc1f29db50e641078725558a1bSebastian Redl return QualType(); 1452923d56d436f750bc1f29db50e641078725558a1bSebastian Redl } 1453cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1454cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T->isFunctionType()) { 1455cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::err_illegal_decl_array_of_functions) 1456ac406052f7b980f8caa6b07b4a8d0867d53852c4John McCall << getPrintableNameForEntity(Entity) << T; 1457cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 1458cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 14591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 146034b41d939a1328f484511c6002ba2456db879a29Richard Smith if (T->getContainedAutoType()) { 146134b41d939a1328f484511c6002ba2456db879a29Richard Smith Diag(Loc, diag::err_illegal_decl_array_of_auto) 146234b41d939a1328f484511c6002ba2456db879a29Richard Smith << getPrintableNameForEntity(Entity) << T; 1463e7cf07d8df83e083505c7105c50b2797493008a6Anders Carlsson return QualType(); 1464e7cf07d8df83e083505c7105c50b2797493008a6Anders Carlsson } 14651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 14666217b80b7a1379b74cced1c076338262c3c980b3Ted Kremenek if (const RecordType *EltTy = T->getAs<RecordType>()) { 1467cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // If the element type is a struct or union that contains a variadic 1468cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // array, accept it as a GNU extension: C99 6.7.2.1p2. 1469cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (EltTy->getDecl()->hasFlexibleArrayMember()) 1470cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(Loc, diag::ext_flexible_array_in_array) << T; 1471c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else if (T->isObjCObjectType()) { 1472c7c11b1ba6a110f2416889cc3576fe33277b2a33Chris Lattner Diag(Loc, diag::err_objc_array_of_interfaces) << T; 1473c7c11b1ba6a110f2416889cc3576fe33277b2a33Chris Lattner return QualType(); 1474cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 14751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1476806054db6653d29cb0d9692df3612cbcd03d0530John McCall // Do placeholder conversions on the array size expression. 1477806054db6653d29cb0d9692df3612cbcd03d0530John McCall if (ArraySize && ArraySize->hasPlaceholderType()) { 1478806054db6653d29cb0d9692df3612cbcd03d0530John McCall ExprResult Result = CheckPlaceholderExpr(ArraySize); 1479806054db6653d29cb0d9692df3612cbcd03d0530John McCall if (Result.isInvalid()) return QualType(); 1480806054db6653d29cb0d9692df3612cbcd03d0530John McCall ArraySize = Result.take(); 1481806054db6653d29cb0d9692df3612cbcd03d0530John McCall } 1482806054db6653d29cb0d9692df3612cbcd03d0530John McCall 14835e3c67b4bd894a926282d24b4d0cbc0e123c9f4aJohn McCall // Do lvalue-to-rvalue conversions on the array size expression. 1484429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (ArraySize && !ArraySize->isRValue()) { 1485429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ExprResult Result = DefaultLvalueConversion(ArraySize); 1486429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley if (Result.isInvalid()) 1487429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley return QualType(); 1488429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley 1489429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley ArraySize = Result.take(); 1490429bb276991ff2dbc7c5b438828b9b7737cb15ebJohn Wiegley } 14915e3c67b4bd894a926282d24b4d0cbc0e123c9f4aJohn McCall 1492cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C99 6.7.5.2p1: The size expression shall have integer type. 1493282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // C++11 allows contextual conversions to such types. 149480ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith if (!getLangOpts().CPlusPlus11 && 1495282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith ArraySize && !ArraySize->isTypeDependent() && 14961274ccd90aec0b205fc838c3d504821ccfb55482Douglas Gregor !ArraySize->getType()->isIntegralOrUnscopedEnumerationType()) { 1497cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Diag(ArraySize->getLocStart(), diag::err_array_size_non_int) 1498cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor << ArraySize->getType() << ArraySize->getSourceRange(); 1499cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return QualType(); 1500cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 1501282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith 15022767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor llvm::APSInt ConstVal(Context.getTypeSize(Context.getSizeType())); 1503cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (!ArraySize) { 1504f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman if (ASM == ArrayType::Star) 15057e7eb3da052a6d80ddf2377cab0384c798f73f75Douglas Gregor T = Context.getVariableArrayType(T, 0, ASM, Quals, Brackets); 1506f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman else 1507f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman T = Context.getIncompleteArrayType(T, ASM, Quals); 1508ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor } else if (ArraySize->isTypeDependent() || ArraySize->isValueDependent()) { 15097e7eb3da052a6d80ddf2377cab0384c798f73f75Douglas Gregor T = Context.getDependentSizedArrayType(T, ArraySize, ASM, Quals, Brackets); 1510282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith } else if ((!T->isDependentType() && !T->isIncompleteType() && 1511282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith !T->isConstantSizeType()) || 1512282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith isArraySizeVLA(*this, ArraySize, ConstVal)) { 1513282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // Even in C++11, don't allow contextual conversions in the array bound 1514282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith // of a VLA. 151580ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith if (getLangOpts().CPlusPlus11 && 1516282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith !ArraySize->getType()->isIntegralOrUnscopedEnumerationType()) { 1517282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith Diag(ArraySize->getLocStart(), diag::err_array_size_non_int) 1518282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith << ArraySize->getType() << ArraySize->getSourceRange(); 1519282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith return QualType(); 1520282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith } 1521282e7e66748cc6dd14d6f7f2cb52e5373c531e61Richard Smith 1522e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner // C99: an array with an element type that has a non-constant-size is a VLA. 1523e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner // C99: an array with a non-ICE size is a VLA. We accept any expression 1524e1eed38733ed47d44f9d8c7731817c411eaf4141Chris Lattner // that we can fold to a non-zero positive value as an extension. 15257e7eb3da052a6d80ddf2377cab0384c798f73f75Douglas Gregor T = Context.getVariableArrayType(T, ArraySize, ASM, Quals, Brackets); 1526cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } else { 1527cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // C99 6.7.5.2p1: If the expression is a constant expression, it shall 1528cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // have a value greater than zero. 1529923d56d436f750bc1f29db50e641078725558a1bSebastian Redl if (ConstVal.isSigned() && ConstVal.isNegative()) { 1530b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth if (Entity) 1531b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth Diag(ArraySize->getLocStart(), diag::err_decl_negative_array_size) 1532b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth << getPrintableNameForEntity(Entity) << ArraySize->getSourceRange(); 1533b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth else 1534b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth Diag(ArraySize->getLocStart(), diag::err_typecheck_negative_array_size) 1535b2b5cc0cf908d516a107d373db963f692449a8a8Chandler Carruth << ArraySize->getSourceRange(); 1536923d56d436f750bc1f29db50e641078725558a1bSebastian Redl return QualType(); 1537923d56d436f750bc1f29db50e641078725558a1bSebastian Redl } 1538923d56d436f750bc1f29db50e641078725558a1bSebastian Redl if (ConstVal == 0) { 153902024a9f0d8e6c898de276193af604c42ee41269Douglas Gregor // GCC accepts zero sized static arrays. We allow them when 154002024a9f0d8e6c898de276193af604c42ee41269Douglas Gregor // we're not in a SFINAE context. 154191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier Diag(ArraySize->getLocStart(), 154202024a9f0d8e6c898de276193af604c42ee41269Douglas Gregor isSFINAEContext()? diag::err_typecheck_zero_array_size 154302024a9f0d8e6c898de276193af604c42ee41269Douglas Gregor : diag::ext_typecheck_zero_array_size) 1544923d56d436f750bc1f29db50e641078725558a1bSebastian Redl << ArraySize->getSourceRange(); 154520cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne 154620cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne if (ASM == ArrayType::Static) { 154720cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne Diag(ArraySize->getLocStart(), 154820cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne diag::warn_typecheck_zero_static_array_size) 154920cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne << ArraySize->getSourceRange(); 155020cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne ASM = ArrayType::Normal; 155120cdbeb8f36576f469db195b4140c293c7281718Peter Collingbourne } 155291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier } else if (!T->isDependentType() && !T->isVariablyModifiedType() && 15532767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor !T->isIncompleteType()) { 155491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // Is the array too large? 15552767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor unsigned ActiveSizeBits 15562767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor = ConstantArrayType::getNumAddressingBits(Context, T, ConstVal); 15572767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor if (ActiveSizeBits > ConstantArrayType::getMaxSizeBits(Context)) 15582767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor Diag(ArraySize->getLocStart(), diag::err_array_too_large) 15592767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor << ConstVal.toString(10) 15602767ce2e21d8bc17869b8436220bce719b3369e4Douglas Gregor << ArraySize->getSourceRange(); 15611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 156291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 156346a617a792bfab0d9b1e057371ea3b9540802226John McCall T = Context.getConstantArrayType(T, ConstVal, ASM, Quals); 1564cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 1565617bb317a7aeb6c3468a4170a5d6c1058da7cea1Joey Gouly 1566617bb317a7aeb6c3468a4170a5d6c1058da7cea1Joey Gouly // OpenCL v1.2 s6.9.d: variable length arrays are not supported. 1567617bb317a7aeb6c3468a4170a5d6c1058da7cea1Joey Gouly if (getLangOpts().OpenCL && T->isVariableArrayType()) { 1568617bb317a7aeb6c3468a4170a5d6c1058da7cea1Joey Gouly Diag(Loc, diag::err_opencl_vla); 1569617bb317a7aeb6c3468a4170a5d6c1058da7cea1Joey Gouly return QualType(); 1570617bb317a7aeb6c3468a4170a5d6c1058da7cea1Joey Gouly } 1571af40776922bc5c28e740adb0342faa09f35b0068David Chisnall // If this is not C99, extwarn about VLA's and C99 array size modifiers. 15724e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!getLangOpts().C99) { 15730fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor if (T->isVariableArrayType()) { 15740fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor // Prohibit the use of non-POD types in VLAs. 1575f85e193739c953358c865005855253af4f68a497John McCall QualType BaseT = Context.getBaseElementType(T); 157691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier if (!T->isDependentType() && 15773c7236e01dfb69b370857ccd71c7bcf5ce80b36fDouglas Gregor !BaseT.isPODType(Context) && 15783c7236e01dfb69b370857ccd71c7bcf5ce80b36fDouglas Gregor !BaseT->isObjCLifetimeType()) { 15790fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor Diag(Loc, diag::err_vla_non_pod) 1580f85e193739c953358c865005855253af4f68a497John McCall << BaseT; 15810fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor return QualType(); 158291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier } 1583a481ec4150ad203440852a2bfee0883dd26f7530Douglas Gregor // Prohibit the use of VLAs during template argument deduction. 1584a481ec4150ad203440852a2bfee0883dd26f7530Douglas Gregor else if (isSFINAEContext()) { 1585a481ec4150ad203440852a2bfee0883dd26f7530Douglas Gregor Diag(Loc, diag::err_vla_in_sfinae); 1586a481ec4150ad203440852a2bfee0883dd26f7530Douglas Gregor return QualType(); 1587a481ec4150ad203440852a2bfee0883dd26f7530Douglas Gregor } 15880fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor // Just extwarn about VLAs. 15890fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor else 15900fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor Diag(Loc, diag::ext_vla); 15910fddb97901dbe36a8253dee29961cba8e0a87cf6Douglas Gregor } else if (ASM != ArrayType::Normal || Quals != 0) 1592d7c56e1114bfe7d461786903bb720d2c6efc05a1Richard Smith Diag(Loc, 15934e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie getLangOpts().CPlusPlus? diag::err_c99_array_usage_cxx 1594d7c56e1114bfe7d461786903bb720d2c6efc05a1Richard Smith : diag::ext_c99_array_usage) << ASM; 1595cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 1596cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 1597630f4bb9f12e330438281c4e46deb6656620b73aDmitri Gribenko if (T->isVariableArrayType()) { 1598630f4bb9f12e330438281c4e46deb6656620b73aDmitri Gribenko // Warn about VLAs for -Wvla. 1599630f4bb9f12e330438281c4e46deb6656620b73aDmitri Gribenko Diag(Loc, diag::warn_vla_used); 1600630f4bb9f12e330438281c4e46deb6656620b73aDmitri Gribenko } 1601630f4bb9f12e330438281c4e46deb6656620b73aDmitri Gribenko 1602cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor return T; 1603cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor} 16049cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor 16059cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor/// \brief Build an ext-vector type. 16069cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor/// 16079cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor/// Run the required checks for the extended vector type. 16089ae2f076ca5ab1feb3ba95629099ec2319833701John McCallQualType Sema::BuildExtVectorType(QualType T, Expr *ArraySize, 16099cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor SourceLocation AttrLoc) { 16109cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor // unlike gcc's vector_size attribute, we do not allow vectors to be defined 16119cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor // in conjunction with complex types (pointers, arrays, functions, etc.). 16121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (!T->isDependentType() && 16139cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor !T->isIntegerType() && !T->isRealFloatingType()) { 16149cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor Diag(AttrLoc, diag::err_attribute_invalid_vector_type) << T; 16159cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor return QualType(); 16169cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor } 16179cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor 16189ae2f076ca5ab1feb3ba95629099ec2319833701John McCall if (!ArraySize->isTypeDependent() && !ArraySize->isValueDependent()) { 16199cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor llvm::APSInt vecSize(32); 16209ae2f076ca5ab1feb3ba95629099ec2319833701John McCall if (!ArraySize->isIntegerConstantExpr(vecSize, Context)) { 16219cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor Diag(AttrLoc, diag::err_attribute_argument_not_int) 16229ae2f076ca5ab1feb3ba95629099ec2319833701John McCall << "ext_vector_type" << ArraySize->getSourceRange(); 16239cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor return QualType(); 16249cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor } 16251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // unlike gcc's vector_size attribute, the size is specified as the 16279cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor // number of elements, not the number of bytes. 16281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue()); 16291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16309cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor if (vectorSize == 0) { 16319cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor Diag(AttrLoc, diag::err_attribute_zero_size) 16329ae2f076ca5ab1feb3ba95629099ec2319833701John McCall << ArraySize->getSourceRange(); 16339cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor return QualType(); 16349cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor } 16351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16364ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor return Context.getExtVectorType(T, vectorSize); 16371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 16381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 16399ae2f076ca5ab1feb3ba95629099ec2319833701John McCall return Context.getDependentSizedExtVectorType(T, ArraySize, AttrLoc); 16409cdda0cf8528e3d595be9bfa002f0450074beb4dDouglas Gregor} 16411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1642724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas GregorQualType Sema::BuildFunctionType(QualType T, 1643bea522ff43a3f11c7a2bc7949119dbb9fce19e39Jordan Rose llvm::MutableArrayRef<QualType> ParamTypes, 1644fa869547eb1cab12d7e0c0dfa8ba594e336b9b32Eli Friedman SourceLocation Loc, DeclarationName Entity, 16450918989f0eed08870e50418df97d1486d977d773Jordan Rose const FunctionProtoType::ExtProtoInfo &EPI) { 1646724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor if (T->isArrayType() || T->isFunctionType()) { 164791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier Diag(Loc, diag::err_func_returning_array_function) 164858408bc4ead86b08af56cd06fc966fd858b48b2dDouglas Gregor << T->isFunctionType() << T; 1649724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor return QualType(); 1650724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor } 1651aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov 1652aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // Functions cannot return half FP. 1653aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov if (T->isHalfType()) { 1654aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov Diag(Loc, diag::err_parameters_retval_cannot_have_fp16_type) << 1 << 1655aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov FixItHint::CreateInsertion(Loc, "*"); 1656aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov return QualType(); 1657aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov } 1658aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov 1659724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor bool Invalid = false; 1660bea522ff43a3f11c7a2bc7949119dbb9fce19e39Jordan Rose for (unsigned Idx = 0, Cnt = ParamTypes.size(); Idx < Cnt; ++Idx) { 1661aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // FIXME: Loc is too inprecise here, should use proper locations for args. 166279e6bd379773447a74cc3e579d9081e4c5cb6d63Douglas Gregor QualType ParamType = Context.getAdjustedParameterType(ParamTypes[Idx]); 16632dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor if (ParamType->isVoidType()) { 1664724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor Diag(Loc, diag::err_param_with_void_type); 1665724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor Invalid = true; 1666aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov } else if (ParamType->isHalfType()) { 1667aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // Disallow half FP arguments. 1668aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov Diag(Loc, diag::err_parameters_retval_cannot_have_fp16_type) << 0 << 1669aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov FixItHint::CreateInsertion(Loc, "*"); 1670aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov Invalid = true; 1671724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor } 1672cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 167354e14c4db764c0636160d26c5bbf491637c83a76John McCall ParamTypes[Idx] = ParamType; 1674724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor } 1675724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor 1676724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor if (Invalid) 1677724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor return QualType(); 1678724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor 1679bea522ff43a3f11c7a2bc7949119dbb9fce19e39Jordan Rose return Context.getFunctionType(T, ParamTypes, EPI); 1680724651c3523e25fbf2f6cd0419bc3466e0afdb07Douglas Gregor} 16811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1682949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \brief Build a member pointer type \c T Class::*. 1683949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// 1684949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \param T the type to which the member pointer refers. 1685949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \param Class the class type into which the member pointer points. 1686949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \param Loc the location where this type begins 1687949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \param Entity the name of the entity that will have this member pointer type 1688949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// 1689949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// \returns a member pointer type, if successful, or a NULL type if there was 1690949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor/// an error. 16911eb4433ac451dc16f4133a88af2d002ac26c58efMike StumpQualType Sema::BuildMemberPointerType(QualType T, QualType Class, 16922865474261a608c7873b87ba4af110d17907896dJohn McCall SourceLocation Loc, 1693949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor DeclarationName Entity) { 1694949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // Verify that we're not building a pointer to pointer to function with 1695949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // exception specification. 1696949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (CheckDistantExceptionSpec(T)) { 1697949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor Diag(Loc, diag::err_distant_exception_spec); 1698949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 1699949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // FIXME: If we're doing this as part of template instantiation, 1700949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // we should return immediately. 1701949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 1702949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // Build the type anyway, but use the canonical type so that the 1703949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // exception specifiers are stripped off. 1704949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor T = Context.getCanonicalType(T); 1705949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor } 1706949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 1707737801257f795632175517ffce4a80c62fc7bff7Sebastian Redl // C++ 8.3.3p3: A pointer to member shall not point to ... a member 1708949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor // with reference type, or "cv void." 1709949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (T->isReferenceType()) { 17108d4655d3b966da02fe0588767160448594cddd61Anders Carlsson Diag(Loc, diag::err_illegal_decl_mempointer_to_reference) 1711ac406052f7b980f8caa6b07b4a8d0867d53852c4John McCall << (Entity? Entity.getAsString() : "type name") << T; 1712949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor return QualType(); 1713949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor } 1714949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 1715949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (T->isVoidType()) { 1716949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor Diag(Loc, diag::err_illegal_decl_mempointer_to_void) 1717949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor << (Entity? Entity.getAsString() : "type name"); 1718949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor return QualType(); 1719949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor } 1720949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 1721949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (!Class->isDependentType() && !Class->isRecordType()) { 1722949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor Diag(Loc, diag::err_mempointer_in_nonclass_type) << Class; 1723949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor return QualType(); 1724949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor } 1725949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor 1726b8b2c9da87e7d70a1679db026f40548b3192b705John McCall // C++ allows the class type in a member pointer to be an incomplete type. 1727b8b2c9da87e7d70a1679db026f40548b3192b705John McCall // In the Microsoft ABI, the size of the member pointer can vary 1728b8b2c9da87e7d70a1679db026f40548b3192b705John McCall // according to the class type, which means that we really need a 1729b8b2c9da87e7d70a1679db026f40548b3192b705John McCall // complete type if possible, which means we need to instantiate templates. 1730b8b2c9da87e7d70a1679db026f40548b3192b705John McCall // 1731b8b2c9da87e7d70a1679db026f40548b3192b705John McCall // For now, just require a complete type, which will instantiate 1732b8b2c9da87e7d70a1679db026f40548b3192b705John McCall // templates. This will also error if the type is just forward-declared, 1733b8b2c9da87e7d70a1679db026f40548b3192b705John McCall // which is a bug, but it's a bug that saves us from dealing with some 1734b8b2c9da87e7d70a1679db026f40548b3192b705John McCall // complexities at the moment. 1735b8b2c9da87e7d70a1679db026f40548b3192b705John McCall if (Context.getTargetInfo().getCXXABI().isMicrosoft() && 1736679fc9314c2bde5eb6bea33c790d1a035461e618Joao Matos RequireCompleteType(Loc, Class, diag::err_incomplete_type)) 1737679fc9314c2bde5eb6bea33c790d1a035461e618Joao Matos return QualType(); 1738679fc9314c2bde5eb6bea33c790d1a035461e618Joao Matos 17392865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getMemberPointerType(T, Class.getTypePtr()); 1740949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor} 17411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17429a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// \brief Build a block pointer type. 17439a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// 17449a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// \param T The type to which we'll be building a block pointer. 17459a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// 1746efce31f51d6e7e31e125f96c20f6cdab3ead0a47James Dennett/// \param Loc The source location, used for diagnostics. 17479a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// 17489a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// \param Entity The name of the entity that involves the block pointer 17499a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// type, if known. 17509a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// 17519a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// \returns A suitable block pointer type, if there are no 17529a917e4fac79aba20fbd25983c78396475078918Anders Carlsson/// errors. Otherwise, returns a NULL type. 175391cbbbf506c892a26d4301e2b3ccd377b0938817Chad RosierQualType Sema::BuildBlockPointerType(QualType T, 17541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump SourceLocation Loc, 17559a917e4fac79aba20fbd25983c78396475078918Anders Carlsson DeclarationName Entity) { 17560953e767ff7817f97b3ab20896b229891eeff45bJohn McCall if (!T->isFunctionType()) { 17579a917e4fac79aba20fbd25983c78396475078918Anders Carlsson Diag(Loc, diag::err_nonfunction_block_type); 17589a917e4fac79aba20fbd25983c78396475078918Anders Carlsson return QualType(); 17599a917e4fac79aba20fbd25983c78396475078918Anders Carlsson } 17601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 17612865474261a608c7873b87ba4af110d17907896dJohn McCall return Context.getBlockPointerType(T); 17629a917e4fac79aba20fbd25983c78396475078918Anders Carlsson} 17639a917e4fac79aba20fbd25983c78396475078918Anders Carlsson 1764b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCallQualType Sema::GetTypeFromParser(ParsedType Ty, TypeSourceInfo **TInfo) { 1765b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall QualType QT = Ty.get(); 17663f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor if (QT.isNull()) { 1767a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall if (TInfo) *TInfo = 0; 17683f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor return QualType(); 17693f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor } 17703f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor 1771a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TypeSourceInfo *DI = 0; 1772f4c7371fb1d3cebcfb40abad4537bb82515704eaJohn McCall if (const LocInfoType *LIT = dyn_cast<LocInfoType>(QT)) { 1773e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis QT = LIT->getType(); 1774a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall DI = LIT->getTypeSourceInfo(); 1775e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis } 17761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1777a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall if (TInfo) *TInfo = DI; 1778e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis return QT; 1779e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis} 1780e8661906d49ef6c9694a9cc845ca62a85dbc016dArgyrios Kyrtzidis 1781a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidisstatic void transferARCOwnershipToDeclaratorChunk(TypeProcessingState &state, 1782a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis Qualifiers::ObjCLifetime ownership, 1783a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis unsigned chunkIndex); 1784a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis 1785f85e193739c953358c865005855253af4f68a497John McCall/// Given that this is the declaration of a parameter under ARC, 1786f85e193739c953358c865005855253af4f68a497John McCall/// attempt to infer attributes and such for pointer-to-whatever 1787f85e193739c953358c865005855253af4f68a497John McCall/// types. 1788f85e193739c953358c865005855253af4f68a497John McCallstatic void inferARCWriteback(TypeProcessingState &state, 1789f85e193739c953358c865005855253af4f68a497John McCall QualType &declSpecType) { 1790f85e193739c953358c865005855253af4f68a497John McCall Sema &S = state.getSema(); 1791f85e193739c953358c865005855253af4f68a497John McCall Declarator &declarator = state.getDeclarator(); 1792f85e193739c953358c865005855253af4f68a497John McCall 1793f85e193739c953358c865005855253af4f68a497John McCall // TODO: should we care about decl qualifiers? 1794f85e193739c953358c865005855253af4f68a497John McCall 1795f85e193739c953358c865005855253af4f68a497John McCall // Check whether the declarator has the expected form. We walk 1796f85e193739c953358c865005855253af4f68a497John McCall // from the inside out in order to make the block logic work. 1797f85e193739c953358c865005855253af4f68a497John McCall unsigned outermostPointerIndex = 0; 1798f85e193739c953358c865005855253af4f68a497John McCall bool isBlockPointer = false; 1799f85e193739c953358c865005855253af4f68a497John McCall unsigned numPointers = 0; 1800f85e193739c953358c865005855253af4f68a497John McCall for (unsigned i = 0, e = declarator.getNumTypeObjects(); i != e; ++i) { 1801f85e193739c953358c865005855253af4f68a497John McCall unsigned chunkIndex = i; 1802f85e193739c953358c865005855253af4f68a497John McCall DeclaratorChunk &chunk = declarator.getTypeObject(chunkIndex); 1803f85e193739c953358c865005855253af4f68a497John McCall switch (chunk.Kind) { 1804f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Paren: 1805f85e193739c953358c865005855253af4f68a497John McCall // Ignore parens. 1806f85e193739c953358c865005855253af4f68a497John McCall break; 1807f85e193739c953358c865005855253af4f68a497John McCall 1808f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Reference: 1809f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Pointer: 1810f85e193739c953358c865005855253af4f68a497John McCall // Count the number of pointers. Treat references 1811f85e193739c953358c865005855253af4f68a497John McCall // interchangeably as pointers; if they're mis-ordered, normal 1812f85e193739c953358c865005855253af4f68a497John McCall // type building will discover that. 1813f85e193739c953358c865005855253af4f68a497John McCall outermostPointerIndex = chunkIndex; 1814f85e193739c953358c865005855253af4f68a497John McCall numPointers++; 1815f85e193739c953358c865005855253af4f68a497John McCall break; 1816f85e193739c953358c865005855253af4f68a497John McCall 1817f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::BlockPointer: 1818f85e193739c953358c865005855253af4f68a497John McCall // If we have a pointer to block pointer, that's an acceptable 1819f85e193739c953358c865005855253af4f68a497John McCall // indirect reference; anything else is not an application of 1820f85e193739c953358c865005855253af4f68a497John McCall // the rules. 1821f85e193739c953358c865005855253af4f68a497John McCall if (numPointers != 1) return; 1822f85e193739c953358c865005855253af4f68a497John McCall numPointers++; 1823f85e193739c953358c865005855253af4f68a497John McCall outermostPointerIndex = chunkIndex; 1824f85e193739c953358c865005855253af4f68a497John McCall isBlockPointer = true; 1825f85e193739c953358c865005855253af4f68a497John McCall 1826f85e193739c953358c865005855253af4f68a497John McCall // We don't care about pointer structure in return values here. 1827f85e193739c953358c865005855253af4f68a497John McCall goto done; 1828f85e193739c953358c865005855253af4f68a497John McCall 1829f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Array: // suppress if written (id[])? 1830f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::Function: 1831f85e193739c953358c865005855253af4f68a497John McCall case DeclaratorChunk::MemberPointer: 1832f85e193739c953358c865005855253af4f68a497John McCall return; 1833f85e193739c953358c865005855253af4f68a497John McCall } 1834f85e193739c953358c865005855253af4f68a497John McCall } 1835f85e193739c953358c865005855253af4f68a497John McCall done: 1836f85e193739c953358c865005855253af4f68a497John McCall 1837f85e193739c953358c865005855253af4f68a497John McCall // If we have *one* pointer, then we want to throw the qualifier on 1838f85e193739c953358c865005855253af4f68a497John McCall // the declaration-specifiers, which means that it needs to be a 1839f85e193739c953358c865005855253af4f68a497John McCall // retainable object type. 1840f85e193739c953358c865005855253af4f68a497John McCall if (numPointers == 1) { 1841f85e193739c953358c865005855253af4f68a497John McCall // If it's not a retainable object type, the rule doesn't apply. 1842f85e193739c953358c865005855253af4f68a497John McCall if (!declSpecType->isObjCRetainableType()) return; 1843f85e193739c953358c865005855253af4f68a497John McCall 1844f85e193739c953358c865005855253af4f68a497John McCall // If it already has lifetime, don't do anything. 1845f85e193739c953358c865005855253af4f68a497John McCall if (declSpecType.getObjCLifetime()) return; 1846f85e193739c953358c865005855253af4f68a497John McCall 1847f85e193739c953358c865005855253af4f68a497John McCall // Otherwise, modify the type in-place. 1848f85e193739c953358c865005855253af4f68a497John McCall Qualifiers qs; 184991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 1850f85e193739c953358c865005855253af4f68a497John McCall if (declSpecType->isObjCARCImplicitlyUnretainedType()) 1851f85e193739c953358c865005855253af4f68a497John McCall qs.addObjCLifetime(Qualifiers::OCL_ExplicitNone); 1852f85e193739c953358c865005855253af4f68a497John McCall else 1853f85e193739c953358c865005855253af4f68a497John McCall qs.addObjCLifetime(Qualifiers::OCL_Autoreleasing); 1854f85e193739c953358c865005855253af4f68a497John McCall declSpecType = S.Context.getQualifiedType(declSpecType, qs); 1855f85e193739c953358c865005855253af4f68a497John McCall 1856f85e193739c953358c865005855253af4f68a497John McCall // If we have *two* pointers, then we want to throw the qualifier on 1857f85e193739c953358c865005855253af4f68a497John McCall // the outermost pointer. 1858f85e193739c953358c865005855253af4f68a497John McCall } else if (numPointers == 2) { 1859f85e193739c953358c865005855253af4f68a497John McCall // If we don't have a block pointer, we need to check whether the 1860f85e193739c953358c865005855253af4f68a497John McCall // declaration-specifiers gave us something that will turn into a 1861f85e193739c953358c865005855253af4f68a497John McCall // retainable object pointer after we slap the first pointer on it. 1862f85e193739c953358c865005855253af4f68a497John McCall if (!isBlockPointer && !declSpecType->isObjCObjectType()) 1863f85e193739c953358c865005855253af4f68a497John McCall return; 1864f85e193739c953358c865005855253af4f68a497John McCall 1865f85e193739c953358c865005855253af4f68a497John McCall // Look for an explicit lifetime attribute there. 1866f85e193739c953358c865005855253af4f68a497John McCall DeclaratorChunk &chunk = declarator.getTypeObject(outermostPointerIndex); 18671c73dcbe1f1921bad8311cfb5089d30b4bd75b66Argyrios Kyrtzidis if (chunk.Kind != DeclaratorChunk::Pointer && 18681c73dcbe1f1921bad8311cfb5089d30b4bd75b66Argyrios Kyrtzidis chunk.Kind != DeclaratorChunk::BlockPointer) 18691c73dcbe1f1921bad8311cfb5089d30b4bd75b66Argyrios Kyrtzidis return; 1870f85e193739c953358c865005855253af4f68a497John McCall for (const AttributeList *attr = chunk.getAttrs(); attr; 1871f85e193739c953358c865005855253af4f68a497John McCall attr = attr->getNext()) 18728e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr->getKind() == AttributeList::AT_ObjCOwnership) 1873f85e193739c953358c865005855253af4f68a497John McCall return; 1874f85e193739c953358c865005855253af4f68a497John McCall 1875a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis transferARCOwnershipToDeclaratorChunk(state, Qualifiers::OCL_Autoreleasing, 1876a8349f5e60d1b5b0e658195a60d385b56ed440ecArgyrios Kyrtzidis outermostPointerIndex); 1877f85e193739c953358c865005855253af4f68a497John McCall 1878f85e193739c953358c865005855253af4f68a497John McCall // Any other number of pointers/references does not trigger the rule. 1879f85e193739c953358c865005855253af4f68a497John McCall } else return; 1880f85e193739c953358c865005855253af4f68a497John McCall 1881f85e193739c953358c865005855253af4f68a497John McCall // TODO: mark whether we did this inference? 1882f85e193739c953358c865005855253af4f68a497John McCall} 1883f85e193739c953358c865005855253af4f68a497John McCall 18848c952cd40ccec9d720931f27e7d722fed207d536Richard Smithstatic void diagnoseIgnoredQualifiers( 18858c952cd40ccec9d720931f27e7d722fed207d536Richard Smith Sema &S, unsigned Quals, 18868c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation FallbackLoc, 18878c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation ConstQualLoc = SourceLocation(), 18888c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation VolatileQualLoc = SourceLocation(), 18898c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation RestrictQualLoc = SourceLocation(), 18908c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation AtomicQualLoc = SourceLocation()) { 18918c952cd40ccec9d720931f27e7d722fed207d536Richard Smith assert(Quals && "no qualifiers to diagnose"); 18928c952cd40ccec9d720931f27e7d722fed207d536Richard Smith const SourceManager &SM = S.getSourceManager(); 18938c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 18948c952cd40ccec9d720931f27e7d722fed207d536Richard Smith struct Qual { 18958c952cd40ccec9d720931f27e7d722fed207d536Richard Smith unsigned Mask; 18968c952cd40ccec9d720931f27e7d722fed207d536Richard Smith const char *Name; 18978c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation Loc; 18988c952cd40ccec9d720931f27e7d722fed207d536Richard Smith } const QualKinds[4] = { 18998c952cd40ccec9d720931f27e7d722fed207d536Richard Smith { DeclSpec::TQ_const, "const", ConstQualLoc }, 19008c952cd40ccec9d720931f27e7d722fed207d536Richard Smith { DeclSpec::TQ_volatile, "volatile", VolatileQualLoc }, 19018c952cd40ccec9d720931f27e7d722fed207d536Richard Smith { DeclSpec::TQ_restrict, "restrict", RestrictQualLoc }, 19028c952cd40ccec9d720931f27e7d722fed207d536Richard Smith { DeclSpec::TQ_atomic, "_Atomic", AtomicQualLoc } 19038c952cd40ccec9d720931f27e7d722fed207d536Richard Smith }; 19048c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 19058c952cd40ccec9d720931f27e7d722fed207d536Richard Smith llvm::SmallString<32> QualStr; 1906d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth unsigned NumQuals = 0; 1907d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth SourceLocation Loc; 19088c952cd40ccec9d720931f27e7d722fed207d536Richard Smith FixItHint FixIts[4]; 19098c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 19108c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // Build a string naming the redundant qualifiers. 19118c952cd40ccec9d720931f27e7d722fed207d536Richard Smith for (unsigned I = 0; I != 4; ++I) { 19128c952cd40ccec9d720931f27e7d722fed207d536Richard Smith if (Quals & QualKinds[I].Mask) { 19138c952cd40ccec9d720931f27e7d722fed207d536Richard Smith if (!QualStr.empty()) QualStr += ' '; 19148c952cd40ccec9d720931f27e7d722fed207d536Richard Smith QualStr += QualKinds[I].Name; 19158c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 19168c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // If we have a location for the qualifier, offer a fixit. 19178c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation QualLoc = QualKinds[I].Loc; 19188c952cd40ccec9d720931f27e7d722fed207d536Richard Smith if (!QualLoc.isInvalid()) { 19198c952cd40ccec9d720931f27e7d722fed207d536Richard Smith FixIts[NumQuals] = FixItHint::CreateRemoval(QualLoc); 19208c952cd40ccec9d720931f27e7d722fed207d536Richard Smith if (Loc.isInvalid() || SM.isBeforeInTranslationUnit(QualLoc, Loc)) 19218c952cd40ccec9d720931f27e7d722fed207d536Richard Smith Loc = QualLoc; 19228c952cd40ccec9d720931f27e7d722fed207d536Richard Smith } 1923d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 19248c952cd40ccec9d720931f27e7d722fed207d536Richard Smith ++NumQuals; 19258c952cd40ccec9d720931f27e7d722fed207d536Richard Smith } 19268c952cd40ccec9d720931f27e7d722fed207d536Richard Smith } 1927d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 19288c952cd40ccec9d720931f27e7d722fed207d536Richard Smith S.Diag(Loc.isInvalid() ? FallbackLoc : Loc, diag::warn_qual_return_type) 19298c952cd40ccec9d720931f27e7d722fed207d536Richard Smith << QualStr << NumQuals << FixIts[0] << FixIts[1] << FixIts[2] << FixIts[3]; 19308c952cd40ccec9d720931f27e7d722fed207d536Richard Smith} 1931a08fcb8105bf53f3640ad17f61bdcde2d8ace78aHans Wennborg 19328c952cd40ccec9d720931f27e7d722fed207d536Richard Smith// Diagnose pointless type qualifiers on the return type of a function. 19338c952cd40ccec9d720931f27e7d722fed207d536Richard Smithstatic void diagnoseIgnoredFunctionQualifiers(Sema &S, QualType RetTy, 19348c952cd40ccec9d720931f27e7d722fed207d536Richard Smith Declarator &D, 19358c952cd40ccec9d720931f27e7d722fed207d536Richard Smith unsigned FunctionChunkIndex) { 19368c952cd40ccec9d720931f27e7d722fed207d536Richard Smith unsigned AtomicQual = RetTy->isAtomicType() ? DeclSpec::TQ_atomic : 0; 19378c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 19388c952cd40ccec9d720931f27e7d722fed207d536Richard Smith if (D.getTypeObject(FunctionChunkIndex).Fun.hasTrailingReturnType()) { 19398c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // FIXME: TypeSourceInfo doesn't preserve location information for 19408c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // qualifiers. 19418c952cd40ccec9d720931f27e7d722fed207d536Richard Smith diagnoseIgnoredQualifiers(S, RetTy.getCVRQualifiers() | AtomicQual, 19428c952cd40ccec9d720931f27e7d722fed207d536Richard Smith D.getIdentifierLoc()); 19438c952cd40ccec9d720931f27e7d722fed207d536Richard Smith return; 1944d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth } 19458c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 19468c952cd40ccec9d720931f27e7d722fed207d536Richard Smith for (unsigned OuterChunkIndex = FunctionChunkIndex + 1, 19478c952cd40ccec9d720931f27e7d722fed207d536Richard Smith End = D.getNumTypeObjects(); 19488c952cd40ccec9d720931f27e7d722fed207d536Richard Smith OuterChunkIndex != End; ++OuterChunkIndex) { 19498c952cd40ccec9d720931f27e7d722fed207d536Richard Smith DeclaratorChunk &OuterChunk = D.getTypeObject(OuterChunkIndex); 19508c952cd40ccec9d720931f27e7d722fed207d536Richard Smith switch (OuterChunk.Kind) { 19518c952cd40ccec9d720931f27e7d722fed207d536Richard Smith case DeclaratorChunk::Paren: 19528c952cd40ccec9d720931f27e7d722fed207d536Richard Smith continue; 19538c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 19548c952cd40ccec9d720931f27e7d722fed207d536Richard Smith case DeclaratorChunk::Pointer: { 19558c952cd40ccec9d720931f27e7d722fed207d536Richard Smith DeclaratorChunk::PointerTypeInfo &PTI = OuterChunk.Ptr; 19568c952cd40ccec9d720931f27e7d722fed207d536Richard Smith diagnoseIgnoredQualifiers( 19578c952cd40ccec9d720931f27e7d722fed207d536Richard Smith S, PTI.TypeQuals, 19588c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation(), 19598c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation::getFromRawEncoding(PTI.ConstQualLoc), 19608c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation::getFromRawEncoding(PTI.VolatileQualLoc), 19618c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation::getFromRawEncoding(PTI.RestrictQualLoc), 19628c952cd40ccec9d720931f27e7d722fed207d536Richard Smith SourceLocation::getFromRawEncoding(PTI.AtomicQualLoc)); 19638c952cd40ccec9d720931f27e7d722fed207d536Richard Smith return; 19648c952cd40ccec9d720931f27e7d722fed207d536Richard Smith } 19658c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 19668c952cd40ccec9d720931f27e7d722fed207d536Richard Smith case DeclaratorChunk::Function: 19678c952cd40ccec9d720931f27e7d722fed207d536Richard Smith case DeclaratorChunk::BlockPointer: 19688c952cd40ccec9d720931f27e7d722fed207d536Richard Smith case DeclaratorChunk::Reference: 19698c952cd40ccec9d720931f27e7d722fed207d536Richard Smith case DeclaratorChunk::Array: 19708c952cd40ccec9d720931f27e7d722fed207d536Richard Smith case DeclaratorChunk::MemberPointer: 19718c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // FIXME: We can't currently provide an accurate source location and a 19728c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // fix-it hint for these. 19738c952cd40ccec9d720931f27e7d722fed207d536Richard Smith diagnoseIgnoredQualifiers(S, RetTy.getCVRQualifiers() | AtomicQual, 19748c952cd40ccec9d720931f27e7d722fed207d536Richard Smith D.getIdentifierLoc()); 19758c952cd40ccec9d720931f27e7d722fed207d536Richard Smith return; 19768c952cd40ccec9d720931f27e7d722fed207d536Richard Smith } 19778c952cd40ccec9d720931f27e7d722fed207d536Richard Smith 19788c952cd40ccec9d720931f27e7d722fed207d536Richard Smith llvm_unreachable("unknown declarator chunk kind"); 19794cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith } 1980d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 19818c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // If the qualifiers come from a conversion function type, don't diagnose 19828c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // them -- they're not necessarily redundant, since such a conversion 19838c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // operator can be explicitly called as "x.operator const int()". 19848c952cd40ccec9d720931f27e7d722fed207d536Richard Smith if (D.getName().getKind() == UnqualifiedId::IK_ConversionFunctionId) 19858c952cd40ccec9d720931f27e7d722fed207d536Richard Smith return; 1986d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 19878c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // Just parens all the way out to the decl specifiers. Diagnose any qualifiers 19888c952cd40ccec9d720931f27e7d722fed207d536Richard Smith // which are present there. 19898c952cd40ccec9d720931f27e7d722fed207d536Richard Smith diagnoseIgnoredQualifiers(S, D.getDeclSpec().getTypeQualifiers() | AtomicQual, 19908c952cd40ccec9d720931f27e7d722fed207d536Richard Smith D.getIdentifierLoc(), 19918c952cd40ccec9d720931f27e7d722fed207d536Richard Smith D.getDeclSpec().getConstSpecLoc(), 19928c952cd40ccec9d720931f27e7d722fed207d536Richard Smith D.getDeclSpec().getVolatileSpecLoc(), 19938c952cd40ccec9d720931f27e7d722fed207d536Richard Smith D.getDeclSpec().getRestrictSpecLoc(), 19948c952cd40ccec9d720931f27e7d722fed207d536Richard Smith D.getDeclSpec().getAtomicSpecLoc()); 1995d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth} 1996d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 19978cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidisstatic QualType GetDeclSpecTypeForDeclarator(TypeProcessingState &state, 19988cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis TypeSourceInfo *&ReturnTypeInfo) { 19998cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Sema &SemaRef = state.getSema(); 20008cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Declarator &D = state.getDeclarator(); 2001930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor QualType T; 20028cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis ReturnTypeInfo = 0; 2003711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 20048cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // The TagDecl owned by the DeclSpec. 20058cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis TagDecl *OwnedTagDecl = 0; 20068999fe1bc367b3ecc878d135c7b31e3479da56f4Sebastian Redl 20073f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor switch (D.getName().getKind()) { 200898a5403ecf1d2b60ae8cbf43e54194bd762cacaaFariborz Jahanian case UnqualifiedId::IK_ImplicitSelfParam: 20093f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor case UnqualifiedId::IK_OperatorFunctionId: 20108999fe1bc367b3ecc878d135c7b31e3479da56f4Sebastian Redl case UnqualifiedId::IK_Identifier: 20110486d746019f8310589b1f0d92edcc4bb3916b33Sean Hunt case UnqualifiedId::IK_LiteralOperatorId: 20123f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor case UnqualifiedId::IK_TemplateId: 20138cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = ConvertDeclSpecToType(state); 201491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 2015591bd3cb605f1f0229b4b1d8a4b8183377064ec5Douglas Gregor if (!D.isInvalidType() && D.getDeclSpec().isTypeSpecOwned()) { 2016d3880f8458bb6a03818ee01f758c32f945de3eaaArgyrios Kyrtzidis OwnedTagDecl = cast<TagDecl>(D.getDeclSpec().getRepAsDecl()); 201715987970eeaa1842c29ec8797affd1c1dea05585Abramo Bagnara // Owned declaration is embedded in declarator. 2018d3880f8458bb6a03818ee01f758c32f945de3eaaArgyrios Kyrtzidis OwnedTagDecl->setEmbeddedInDeclarator(true); 2019591bd3cb605f1f0229b4b1d8a4b8183377064ec5Douglas Gregor } 2020930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor break; 2021930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor 20223f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor case UnqualifiedId::IK_ConstructorName: 20230efc2c1716be4f1c5f1343cad3b047e74861f030Douglas Gregor case UnqualifiedId::IK_ConstructorTemplateId: 20243f9a0566e6793151b99a65ab936220971cf96c1bDouglas Gregor case UnqualifiedId::IK_DestructorName: 2025930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor // Constructors and destructors don't have return types. Use 202691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // "void" instead. 20278cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = SemaRef.Context.VoidTy; 2028a78a640c5f59720f2c2b8034eca4fbf8525d9026Rafael Espindola if (AttributeList *attrs = D.getDeclSpec().getAttributes().getList()) 2029f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith processTypeAttrs(state, T, TAL_DeclSpec, attrs); 2030930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor break; 203148026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor 203248026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor case UnqualifiedId::IK_ConversionFunctionId: 203348026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor // The result type of a conversion function is the type that it 203448026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor // converts to. 203591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier T = SemaRef.GetTypeFromParser(D.getName().ConversionFunctionId, 20368cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis &ReturnTypeInfo); 203748026d26fb58e413544874eead5491b1452e2ebfDouglas Gregor break; 2038930d8b5ecc074cca01ecd9a522a55f55f3b72396Douglas Gregor } 2039dab60ad68a3a98d687305941a3852e793705f945Douglas Gregor 2040711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (D.getAttributes()) 2041711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeTypeAttrsFromDeclarator(state, T); 2042711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 2043d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // C++11 [dcl.spec.auto]p5: reject 'auto' if it is not in an allowed context. 2044d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // In C++11, a function declarator using 'auto' must have a trailing return 20458110f04b39fd028496dd6bf9e3a78278c3e0a6adRichard Smith // type (this is checked later) and we can skip this. In other languages 20468110f04b39fd028496dd6bf9e3a78278c3e0a6adRichard Smith // using auto, we need to check regardless. 204734b41d939a1328f484511c6002ba2456db879a29Richard Smith if (D.getDeclSpec().getTypeSpecType() == DeclSpec::TST_auto && 204880ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith (!SemaRef.getLangOpts().CPlusPlus11 || !D.isFunctionDeclarator())) { 2049baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson int Error = -1; 20501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2051baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson switch (D.getContext()) { 2052baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::KNRTypeListContext: 2053b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("K&R type lists aren't allowed in C++"); 2054f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman case Declarator::LambdaExprContext: 2055f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman llvm_unreachable("Can't specify a type specifier in lambda grammar"); 2056cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCParameterContext: 2057cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCResultContext: 2058baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::PrototypeContext: 2059baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson Error = 0; // Function prototype 2060baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 2061baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::MemberContext: 20627a614d8380297fcd2bc23986241905d97222948cRichard Smith if (D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_static) 20637a614d8380297fcd2bc23986241905d97222948cRichard Smith break; 20648cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis switch (cast<TagDecl>(SemaRef.CurContext)->getTagKind()) { 2065eb2d1f1c88836bd5382e5d7aa8f6b85148a88b27David Blaikie case TTK_Enum: llvm_unreachable("unhandled tag kind"); 2066465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara case TTK_Struct: Error = 1; /* Struct member */ break; 2067465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara case TTK_Union: Error = 2; /* Union member */ break; 2068465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara case TTK_Class: Error = 3; /* Class member */ break; 20696666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos case TTK_Interface: Error = 4; /* Interface member */ break; 20701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 2071baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 2072baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::CXXCatchContext: 207317b6399f8461c5b7e1c6f367b0a0dde49f921240Argyrios Kyrtzidis case Declarator::ObjCCatchContext: 20746666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 5; // Exception declaration 2075baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 2076baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::TemplateParamContext: 20776666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 6; // Template parameter 2078baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 2079baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::BlockLiteralContext: 20806666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 7; // Block literal 208134b41d939a1328f484511c6002ba2456db879a29Richard Smith break; 208234b41d939a1328f484511c6002ba2456db879a29Richard Smith case Declarator::TemplateTypeArgContext: 20836666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 8; // Template type argument 208434b41d939a1328f484511c6002ba2456db879a29Richard Smith break; 2085162e1c1b487352434552147967c3dd296ebee2f7Richard Smith case Declarator::AliasDeclContext: 20863e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith case Declarator::AliasTemplateContext: 20876666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 10; // Type alias 2088162e1c1b487352434552147967c3dd296ebee2f7Richard Smith break; 20897796eb5643244f3134834253ce5ea89107ac21c1Richard Smith case Declarator::TrailingReturnContext: 20906666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 11; // Function return type 20917796eb5643244f3134834253ce5ea89107ac21c1Richard Smith break; 209234b41d939a1328f484511c6002ba2456db879a29Richard Smith case Declarator::TypeNameContext: 20936666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 12; // Generic 2094baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 2095baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::FileContext: 2096baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::BlockContext: 2097baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::ForContext: 2098baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson case Declarator::ConditionContext: 20990b8c98f3ddf83adcb9e9d98b68ce38e970cdee73Argyrios Kyrtzidis case Declarator::CXXNewContext: 2100baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson break; 2101baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson } 2102baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson 2103ddc83f9255834217f0559b09ff75a1c50b8ce457Richard Smith if (D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_typedef) 21046666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 9; 2105ddc83f9255834217f0559b09ff75a1c50b8ce457Richard Smith 21068110f04b39fd028496dd6bf9e3a78278c3e0a6adRichard Smith // In Objective-C it is an error to use 'auto' on a function declarator. 21078110f04b39fd028496dd6bf9e3a78278c3e0a6adRichard Smith if (D.isFunctionDeclarator()) 21086666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos Error = 11; 21098110f04b39fd028496dd6bf9e3a78278c3e0a6adRichard Smith 2110d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // C++11 [dcl.spec.auto]p2: 'auto' is always fine if the declarator 2111e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // contains a trailing return type. That is only legal at the outermost 2112e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // level. Check all declarator chunks (outermost first) anyway, to give 2113e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // better diagnostics. 211480ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith if (SemaRef.getLangOpts().CPlusPlus11 && Error != -1) { 2115e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 2116e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith unsigned chunkIndex = e - i - 1; 2117e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith state.setCurrentChunkIndex(chunkIndex); 2118e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith DeclaratorChunk &DeclType = D.getTypeObject(chunkIndex); 2119e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith if (DeclType.Kind == DeclaratorChunk::Function) { 2120e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith const DeclaratorChunk::FunctionTypeInfo &FTI = DeclType.Fun; 212154655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith if (FTI.hasTrailingReturnType()) { 2122e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith Error = -1; 2123e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith break; 2124e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 2125e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 2126e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 2127e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 2128e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith 2129baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson if (Error != -1) { 21308cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis SemaRef.Diag(D.getDeclSpec().getTypeSpecTypeLoc(), 21318cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis diag::err_auto_not_allowed) 2132baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson << Error; 21338cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = SemaRef.Context.IntTy; 2134baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson D.setInvalidType(true); 21350aa86c0463a881be85fd34e04c7de3379997621dRichard Smith } else 21360aa86c0463a881be85fd34e04c7de3379997621dRichard Smith SemaRef.Diag(D.getDeclSpec().getTypeSpecTypeLoc(), 21370aa86c0463a881be85fd34e04c7de3379997621dRichard Smith diag::warn_cxx98_compat_auto_type_specifier); 2138baf45d31f18e6d5b3d2a33695c2af6e6cbc4ee29Anders Carlsson } 21398cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 21404e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (SemaRef.getLangOpts().CPlusPlus && 21415e1cdac63c3d9c9b32fa41fa0b2d242a58a20d49John McCall OwnedTagDecl && OwnedTagDecl->isCompleteDefinition()) { 21428cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // Check the contexts where C++ forbids the declaration of a new class 21438cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // or enumeration in a type-specifier-seq. 21448cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis switch (D.getContext()) { 21457796eb5643244f3134834253ce5ea89107ac21c1Richard Smith case Declarator::TrailingReturnContext: 21467796eb5643244f3134834253ce5ea89107ac21c1Richard Smith // Class and enumeration definitions are syntactically not allowed in 21477796eb5643244f3134834253ce5ea89107ac21c1Richard Smith // trailing return types. 21487796eb5643244f3134834253ce5ea89107ac21c1Richard Smith llvm_unreachable("parser should not have allowed this"); 21497796eb5643244f3134834253ce5ea89107ac21c1Richard Smith break; 21508cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::FileContext: 21518cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::MemberContext: 21528cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::BlockContext: 21538cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::ForContext: 21548cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::BlockLiteralContext: 2155f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman case Declarator::LambdaExprContext: 2156d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // C++11 [dcl.type]p3: 21578cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // A type-specifier-seq shall not define a class or enumeration unless 21588cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // it appears in the type-id of an alias-declaration (7.1.3) that is not 21598cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // the declaration of a template-declaration. 21608cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::AliasDeclContext: 21618cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 21628cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::AliasTemplateContext: 21638cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis SemaRef.Diag(OwnedTagDecl->getLocation(), 21648cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis diag::err_type_defined_in_alias_template) 21658cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis << SemaRef.Context.getTypeDeclType(OwnedTagDecl); 2166601e6e894c2a38243588b375bed0b9a9e60060bbEnea Zaffanella D.setInvalidType(true); 21678cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 21688cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::TypeNameContext: 21698cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::TemplateParamContext: 21708cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::CXXNewContext: 21718cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::CXXCatchContext: 21728cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::ObjCCatchContext: 21738cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::TemplateTypeArgContext: 21748cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis SemaRef.Diag(OwnedTagDecl->getLocation(), 21758cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis diag::err_type_defined_in_type_specifier) 21768cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis << SemaRef.Context.getTypeDeclType(OwnedTagDecl); 2177601e6e894c2a38243588b375bed0b9a9e60060bbEnea Zaffanella D.setInvalidType(true); 21788cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 21798cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::PrototypeContext: 2180cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCParameterContext: 2181cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCResultContext: 21828cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::KNRTypeListContext: 21838cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // C++ [dcl.fct]p6: 21848cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // Types shall not be defined in return or parameter types. 21858cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis SemaRef.Diag(OwnedTagDecl->getLocation(), 21868cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis diag::err_type_defined_in_param_type) 21878cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis << SemaRef.Context.getTypeDeclType(OwnedTagDecl); 2188601e6e894c2a38243588b375bed0b9a9e60060bbEnea Zaffanella D.setInvalidType(true); 21898cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 21908cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis case Declarator::ConditionContext: 21918cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // C++ 6.4p2: 21928cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // The type-specifier-seq shall not contain typedef and shall not declare 21938cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // a new class or enumeration. 21948cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis SemaRef.Diag(OwnedTagDecl->getLocation(), 21958cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis diag::err_type_defined_in_condition); 2196601e6e894c2a38243588b375bed0b9a9e60060bbEnea Zaffanella D.setInvalidType(true); 21978cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis break; 21988cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis } 21998cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis } 22008cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 22018cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis return T; 22028cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis} 22038cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 2204a08c2fb74ef823c185619ecc532f8fced6a1982fBenjamin Kramerstatic std::string getFunctionQualifiersAsString(const FunctionProtoType *FnTy){ 2205d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith std::string Quals = 2206d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith Qualifiers::fromCVRMask(FnTy->getTypeQuals()).getAsString(); 2207d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2208d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith switch (FnTy->getRefQualifier()) { 2209d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case RQ_None: 2210d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith break; 2211d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2212d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case RQ_LValue: 2213d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (!Quals.empty()) 2214d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith Quals += ' '; 2215d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith Quals += '&'; 2216d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith break; 2217d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2218d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case RQ_RValue: 2219d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (!Quals.empty()) 2220d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith Quals += ' '; 2221d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith Quals += "&&"; 2222d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith break; 2223d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith } 2224d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2225d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith return Quals; 2226d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith} 2227d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2228d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith/// Check that the function type T, which has a cv-qualifier or a ref-qualifier, 2229d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith/// can be contained within the declarator chunk DeclType, and produce an 2230d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith/// appropriate diagnostic if not. 2231d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smithstatic void checkQualifiedFunction(Sema &S, QualType T, 2232d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith DeclaratorChunk &DeclType) { 2233d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // C++98 [dcl.fct]p4 / C++11 [dcl.fct]p6: a function type with a 2234d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // cv-qualifier or a ref-qualifier can only appear at the topmost level 2235d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // of a type. 2236d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith int DiagKind = -1; 2237d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith switch (DeclType.Kind) { 2238d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case DeclaratorChunk::Paren: 2239d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case DeclaratorChunk::MemberPointer: 2240d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // These cases are permitted. 2241d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith return; 2242d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case DeclaratorChunk::Array: 2243d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case DeclaratorChunk::Function: 2244d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // These cases don't allow function types at all; no need to diagnose the 2245d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // qualifiers separately. 2246d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith return; 2247d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case DeclaratorChunk::BlockPointer: 2248d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith DiagKind = 0; 2249d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith break; 2250d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case DeclaratorChunk::Pointer: 2251d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith DiagKind = 1; 2252d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith break; 2253d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith case DeclaratorChunk::Reference: 2254d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith DiagKind = 2; 2255d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith break; 2256d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith } 2257d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2258d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith assert(DiagKind != -1); 2259d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith S.Diag(DeclType.Loc, diag::err_compound_qualified_function_type) 2260d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith << DiagKind << isa<FunctionType>(T.IgnoreParens()) << T 2261d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith << getFunctionQualifiersAsString(T->castAs<FunctionProtoType>()); 2262d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith} 2263d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2264b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith/// Produce an approprioate diagnostic for an ambiguity between a function 2265b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith/// declarator and a C++ direct-initializer. 2266b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smithstatic void warnAboutAmbiguousFunction(Sema &S, Declarator &D, 2267b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith DeclaratorChunk &DeclType, QualType RT) { 2268b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith const DeclaratorChunk::FunctionTypeInfo &FTI = DeclType.Fun; 2269b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith assert(FTI.isAmbiguous && "no direct-initializer / function ambiguity"); 2270b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2271b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // If the return type is void there is no ambiguity. 2272b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (RT->isVoidType()) 2273b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 2274b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2275b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // An initializer for a non-class type can have at most one argument. 2276b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (!RT->isRecordType() && FTI.NumArgs > 1) 2277b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 2278b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2279b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // An initializer for a reference must have exactly one argument. 2280b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (RT->isReferenceType() && FTI.NumArgs != 1) 2281b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 2282b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2283b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // Only warn if this declarator is declaring a function at block scope, and 2284b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // doesn't have a storage class (such as 'extern') specified. 2285b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (!D.isFunctionDeclarator() || 2286b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith D.getFunctionDefinitionKind() != FDK_Declaration || 2287b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith !S.CurContext->isFunctionOrMethod() || 2288b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith D.getDeclSpec().getStorageClassSpecAsWritten() 2289b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith != DeclSpec::SCS_unspecified) 2290b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 2291b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2292b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // Inside a condition, a direct initializer is not permitted. We allow one to 2293b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // be parsed in order to give better diagnostics in condition parsing. 2294b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (D.getContext() == Declarator::ConditionContext) 2295b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith return; 2296b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2297b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith SourceRange ParenRange(DeclType.Loc, DeclType.EndLoc); 2298b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2299d64effc4e31044c05d6e4400150edb26e914983aRichard Smith S.Diag(DeclType.Loc, 2300d64effc4e31044c05d6e4400150edb26e914983aRichard Smith FTI.NumArgs ? diag::warn_parens_disambiguated_as_function_declaration 2301d64effc4e31044c05d6e4400150edb26e914983aRichard Smith : diag::warn_empty_parens_are_function_decl) 2302d64effc4e31044c05d6e4400150edb26e914983aRichard Smith << ParenRange; 2303d64effc4e31044c05d6e4400150edb26e914983aRichard Smith 2304d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // If the declaration looks like: 2305d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // T var1, 2306d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // f(); 2307d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // and name lookup finds a function named 'f', then the ',' was 2308d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // probably intended to be a ';'. 2309d64effc4e31044c05d6e4400150edb26e914983aRichard Smith if (!D.isFirstDeclarator() && D.getIdentifier()) { 2310d64effc4e31044c05d6e4400150edb26e914983aRichard Smith FullSourceLoc Comma(D.getCommaLoc(), S.SourceMgr); 2311d64effc4e31044c05d6e4400150edb26e914983aRichard Smith FullSourceLoc Name(D.getIdentifierLoc(), S.SourceMgr); 2312d64effc4e31044c05d6e4400150edb26e914983aRichard Smith if (Comma.getFileID() != Name.getFileID() || 2313d64effc4e31044c05d6e4400150edb26e914983aRichard Smith Comma.getSpellingLineNumber() != Name.getSpellingLineNumber()) { 2314d64effc4e31044c05d6e4400150edb26e914983aRichard Smith LookupResult Result(S, D.getIdentifier(), SourceLocation(), 2315d64effc4e31044c05d6e4400150edb26e914983aRichard Smith Sema::LookupOrdinaryName); 2316d64effc4e31044c05d6e4400150edb26e914983aRichard Smith if (S.LookupName(Result, S.getCurScope())) 2317d64effc4e31044c05d6e4400150edb26e914983aRichard Smith S.Diag(D.getCommaLoc(), diag::note_empty_parens_function_call) 2318d64effc4e31044c05d6e4400150edb26e914983aRichard Smith << FixItHint::CreateReplacement(D.getCommaLoc(), ";") 2319d64effc4e31044c05d6e4400150edb26e914983aRichard Smith << D.getIdentifier(); 2320d64effc4e31044c05d6e4400150edb26e914983aRichard Smith } 2321d64effc4e31044c05d6e4400150edb26e914983aRichard Smith } 2322b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 2323d64effc4e31044c05d6e4400150edb26e914983aRichard Smith if (FTI.NumArgs > 0) { 2324d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // For a declaration with parameters, eg. "T var(T());", suggest adding parens 2325d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // around the first parameter to turn the declaration into a variable 2326d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // declaration. 2327b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith SourceRange Range = FTI.ArgInfo[0].Param->getSourceRange(); 2328b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith SourceLocation B = Range.getBegin(); 2329b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith SourceLocation E = S.PP.getLocForEndOfToken(Range.getEnd()); 2330b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // FIXME: Maybe we should suggest adding braces instead of parens 2331b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // in C++11 for classes that don't have an initializer_list constructor. 2332b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith S.Diag(B, diag::note_additional_parens_for_variable_declaration) 2333b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith << FixItHint::CreateInsertion(B, "(") 2334b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith << FixItHint::CreateInsertion(E, ")"); 2335d64effc4e31044c05d6e4400150edb26e914983aRichard Smith } else { 2336d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // For a declaration without parameters, eg. "T var();", suggest replacing the 2337d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // parens with an initializer to turn the declaration into a variable 2338d64effc4e31044c05d6e4400150edb26e914983aRichard Smith // declaration. 2339b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith const CXXRecordDecl *RD = RT->getAsCXXRecordDecl(); 2340d64effc4e31044c05d6e4400150edb26e914983aRichard Smith 2341b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // Empty parens mean value-initialization, and no parens mean 2342b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // default initialization. These are equivalent if the default 2343b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // constructor is user-provided or if zero-initialization is a 2344b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // no-op. 2345b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (RD && RD->hasDefinition() && 2346b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith (RD->isEmpty() || RD->hasUserProvidedDefaultConstructor())) 2347b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith S.Diag(DeclType.Loc, diag::note_empty_parens_default_ctor) 2348b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith << FixItHint::CreateRemoval(ParenRange); 2349b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith else { 2350b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith std::string Init = S.getFixItZeroInitializerForType(RT); 235180ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith if (Init.empty() && S.LangOpts.CPlusPlus11) 2352b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith Init = "{}"; 2353b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (!Init.empty()) 2354b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith S.Diag(DeclType.Loc, diag::note_empty_parens_zero_initialize) 2355b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith << FixItHint::CreateReplacement(ParenRange, Init); 2356b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith } 2357b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith } 2358b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith} 2359b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 23608cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidisstatic TypeSourceInfo *GetFullTypeForDeclarator(TypeProcessingState &state, 23618cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis QualType declSpecType, 23628cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis TypeSourceInfo *TInfo) { 23638cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 23648cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis QualType T = declSpecType; 23658cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Declarator &D = state.getDeclarator(); 23668cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis Sema &S = state.getSema(); 23678cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis ASTContext &Context = S.Context; 23684e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie const LangOptions &LangOpts = S.getLangOpts(); 23698cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 2370cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor // The name we're declaring, if any. 2371cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor DeclarationName Name; 2372cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (D.getIdentifier()) 2373cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor Name = D.getIdentifier(); 23741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2375162e1c1b487352434552147967c3dd296ebee2f7Richard Smith // Does this declaration declare a typedef-name? 2376162e1c1b487352434552147967c3dd296ebee2f7Richard Smith bool IsTypedefName = 2377162e1c1b487352434552147967c3dd296ebee2f7Richard Smith D.getDeclSpec().getStorageClassSpec() == DeclSpec::SCS_typedef || 23783e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith D.getContext() == Declarator::AliasDeclContext || 23793e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith D.getContext() == Declarator::AliasTemplateContext; 2380162e1c1b487352434552147967c3dd296ebee2f7Richard Smith 2381d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // Does T refer to a function type with a cv-qualifier or a ref-qualifier? 2382d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith bool IsQualifiedFunction = T->isFunctionProtoType() && 2383d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith (T->castAs<FunctionProtoType>()->getTypeQuals() != 0 || 2384d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith T->castAs<FunctionProtoType>()->getRefQualifier() != RQ_None); 2385d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 238698eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump // Walk the DeclTypeInfo, building the recursive type as we go. 238798eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump // DeclTypeInfos are ordered from the identifier out, which is 238898eb8a7a702b95183ed015706b1f1c66f5cb27a4Mike Stump // opposite of what we want :). 23898ce35b095e8fca45e04c1bda14ed0548ce7536adSebastian Redl for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 2390711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned chunkIndex = e - i - 1; 2391711c52bb20d0c69063b52a99826fb7d2835501f1John McCall state.setCurrentChunkIndex(chunkIndex); 2392711c52bb20d0c69063b52a99826fb7d2835501f1John McCall DeclaratorChunk &DeclType = D.getTypeObject(chunkIndex); 2393d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (IsQualifiedFunction) { 2394d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith checkQualifiedFunction(S, T, DeclType); 2395d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith IsQualifiedFunction = DeclType.Kind == DeclaratorChunk::Paren; 2396d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith } 23975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer switch (DeclType.Kind) { 2398075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara case DeclaratorChunk::Paren: 23998cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildParenType(T); 2400075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara break; 24015618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff case DeclaratorChunk::BlockPointer: 24029af5500f3f132f9a2f9abbe82113a7c7bb751472Chris Lattner // If blocks are disabled, emit an error. 24039af5500f3f132f9a2f9abbe82113a7c7bb751472Chris Lattner if (!LangOpts.Blocks) 24048cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Loc, diag::err_blocks_disable); 24051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 24068cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildBlockPointerType(T, D.getIdentifierLoc(), Name); 24072865474261a608c7873b87ba4af110d17907896dJohn McCall if (DeclType.Cls.TypeQuals) 24088cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, DeclType.Cls.TypeQuals); 24095618bd4a52c45fbbb605e3ba885663b2164db8a3Steve Naroff break; 24105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclaratorChunk::Pointer: 24116a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Verify that we're not building a pointer to pointer to function with 24126a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // exception specification. 24138cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.CPlusPlus && S.CheckDistantExceptionSpec(T)) { 24148cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getIdentifierLoc(), diag::err_distant_exception_spec); 24156a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl D.setInvalidType(true); 24166a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Build the type anyway. 24176a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl } 24188cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.ObjC1 && T->getAs<ObjCObjectType>()) { 2419c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall T = Context.getObjCObjectPointerType(T); 24202865474261a608c7873b87ba4af110d17907896dJohn McCall if (DeclType.Ptr.TypeQuals) 24218cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, DeclType.Ptr.TypeQuals); 242214108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff break; 242314108da7f7fc059772711e4ffee1322a27b152a7Steve Naroff } 24248cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildPointerType(T, DeclType.Loc, Name); 24252865474261a608c7873b87ba4af110d17907896dJohn McCall if (DeclType.Ptr.TypeQuals) 24268cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, DeclType.Ptr.TypeQuals); 2427711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 24285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 24290953e767ff7817f97b3ab20896b229891eeff45bJohn McCall case DeclaratorChunk::Reference: { 24306a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Verify that we're not building a reference to pointer to function with 24316a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // exception specification. 24328cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.CPlusPlus && S.CheckDistantExceptionSpec(T)) { 24338cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getIdentifierLoc(), diag::err_distant_exception_spec); 24346a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl D.setInvalidType(true); 24356a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Build the type anyway. 24366a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl } 24378cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildReferenceType(T, DeclType.Ref.LValueRef, DeclType.Loc, Name); 24382865474261a608c7873b87ba4af110d17907896dJohn McCall 24392865474261a608c7873b87ba4af110d17907896dJohn McCall Qualifiers Quals; 24402865474261a608c7873b87ba4af110d17907896dJohn McCall if (DeclType.Ref.HasRestrict) 24418cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, Qualifiers::Restrict); 24425f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 24430953e767ff7817f97b3ab20896b229891eeff45bJohn McCall } 24445f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer case DeclaratorChunk::Array: { 24456a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Verify that we're not building an array of pointers to function with 24466a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // exception specification. 24478cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.CPlusPlus && S.CheckDistantExceptionSpec(T)) { 24488cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getIdentifierLoc(), diag::err_distant_exception_spec); 24496a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl D.setInvalidType(true); 24506a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl // Build the type anyway. 24516a7330c20cabf1cf1cd46f5dfc183ec3a72add66Sebastian Redl } 2452fd89bc825026e44c68a68db72d4012fd6752e70fChris Lattner DeclaratorChunk::ArrayTypeInfo &ATI = DeclType.Arr; 245394f81fd0b0f81a99d215b225c8c5616295b063f6Chris Lattner Expr *ArraySize = static_cast<Expr*>(ATI.NumElts); 24545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ArrayType::ArraySizeModifier ASM; 24555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (ATI.isStar) 24565f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ASM = ArrayType::Star; 24575f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else if (ATI.hasStatic) 24585f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ASM = ArrayType::Static; 24595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer else 24605f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer ASM = ArrayType::Normal; 2461c05a94b7accd4035bf5d5897c434c445b22da855John McCall if (ASM == ArrayType::Star && !D.isPrototypeContext()) { 2462f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman // FIXME: This check isn't quite right: it allows star in prototypes 2463f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman // for function definitions, and disallows some edge cases detailed 2464f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman // in http://gcc.gnu.org/ml/gcc-patches/2009-02/msg00133.html 24658cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Loc, diag::err_array_star_outside_prototype); 2466f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman ASM = ArrayType::Normal; 2467f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman D.setInvalidType(true); 2468f91f5c8a66ffd812f61819836529f8ad437f7e2bEli Friedman } 24697f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg 24707f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // C99 6.7.5.2p1: The optional type qualifiers and the keyword static 24717f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // shall appear only in a declaration of a function parameter with an 24727f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // array type, ... 24737f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg if (ASM == ArrayType::Static || ATI.TypeQuals) { 247499570a58b09fca5d0b328733ab8b6717a1a04f4aMatt Beaumont-Gay if (!(D.isPrototypeContext() || 247599570a58b09fca5d0b328733ab8b6717a1a04f4aMatt Beaumont-Gay D.getContext() == Declarator::KNRTypeListContext)) { 24767f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg S.Diag(DeclType.Loc, diag::err_array_static_outside_prototype) << 24777f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg (ASM == ArrayType::Static ? "'static'" : "type qualifier"); 24787f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // Remove the 'static' and the type qualifiers. 24797f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg if (ASM == ArrayType::Static) 24807f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg ASM = ArrayType::Normal; 24817f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg ATI.TypeQuals = 0; 24827f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg D.setInvalidType(true); 24837f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg } 24847f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg 24857f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // C99 6.7.5.2p1: ... and then only in the outermost array type 24867f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // derivation. 24877f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg unsigned x = chunkIndex; 24887f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg while (x != 0) { 24897f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // Walk outwards along the declarator chunks. 24907f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg x--; 24917f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg const DeclaratorChunk &DC = D.getTypeObject(x); 24927f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg switch (DC.Kind) { 24937f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Paren: 24947f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg continue; 24957f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Array: 24967f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Pointer: 24977f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Reference: 24987f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::MemberPointer: 24997f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg S.Diag(DeclType.Loc, diag::err_array_static_not_outermost) << 25007f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg (ASM == ArrayType::Static ? "'static'" : "type qualifier"); 25017f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg if (ASM == ArrayType::Static) 25027f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg ASM = ArrayType::Normal; 25037f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg ATI.TypeQuals = 0; 25047f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg D.setInvalidType(true); 25057f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg break; 25067f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::Function: 25077f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg case DeclaratorChunk::BlockPointer: 25087f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg // These are invalid anyway, so just ignore. 25097f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg break; 25107f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg } 25117f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg } 25127f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg } 25137f397c5d97fc0c11333d939f2c07bc3b230956e2Hans Wennborg 25148ac2c66a1442985091c5ec2b33ce6d3df3bcb529Eli Friedman T = S.BuildArrayType(T, ASM, ArraySize, ATI.TypeQuals, 25158cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis SourceRange(DeclType.Loc, DeclType.EndLoc), Name); 25165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 25175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2518f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl case DeclaratorChunk::Function: { 25195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If the function declarator has a prototype (i.e. it is not () and 25205f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // does not have a K&R-style identifier list), then the arguments are part 25215f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // of the type, otherwise the argument list is (). 25225f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer const DeclaratorChunk::FunctionTypeInfo &FTI = DeclType.Fun; 2523d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith IsQualifiedFunction = FTI.TypeQuals || FTI.hasRefQualifier(); 25243cc9726a493d90bd8faf094986a59352fd3461cbSebastian Redl 252534b41d939a1328f484511c6002ba2456db879a29Richard Smith // Check for auto functions and trailing return type and adjust the 252634b41d939a1328f484511c6002ba2456db879a29Richard Smith // return type accordingly. 252734b41d939a1328f484511c6002ba2456db879a29Richard Smith if (!D.isInvalidType()) { 252834b41d939a1328f484511c6002ba2456db879a29Richard Smith // trailing-return-type is only required if we're declaring a function, 252934b41d939a1328f484511c6002ba2456db879a29Richard Smith // and not, for instance, a pointer to a function. 253034b41d939a1328f484511c6002ba2456db879a29Richard Smith if (D.getDeclSpec().getTypeSpecType() == DeclSpec::TST_auto && 253154655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith !FTI.hasTrailingReturnType() && chunkIndex == 0) { 25328cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getDeclSpec().getTypeSpecTypeLoc(), 253334b41d939a1328f484511c6002ba2456db879a29Richard Smith diag::err_auto_missing_trailing_return); 253434b41d939a1328f484511c6002ba2456db879a29Richard Smith T = Context.IntTy; 253534b41d939a1328f484511c6002ba2456db879a29Richard Smith D.setInvalidType(true); 253654655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith } else if (FTI.hasTrailingReturnType()) { 2537e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // T must be exactly 'auto' at this point. See CWG issue 681. 2538e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith if (isa<ParenType>(T)) { 25398cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getDeclSpec().getTypeSpecTypeLoc(), 2540e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith diag::err_trailing_return_in_parens) 2541e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith << T << D.getDeclSpec().getSourceRange(); 2542e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith D.setInvalidType(true); 2543f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman } else if (D.getContext() != Declarator::LambdaExprContext && 2544f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman (T.hasQualifiers() || !isa<AutoType>(T))) { 25458cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getDeclSpec().getTypeSpecTypeLoc(), 254634b41d939a1328f484511c6002ba2456db879a29Richard Smith diag::err_trailing_return_without_auto) 254734b41d939a1328f484511c6002ba2456db879a29Richard Smith << T << D.getDeclSpec().getSourceRange(); 254834b41d939a1328f484511c6002ba2456db879a29Richard Smith D.setInvalidType(true); 254934b41d939a1328f484511c6002ba2456db879a29Richard Smith } 255054655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith T = S.GetTypeFromParser(FTI.getTrailingReturnType(), &TInfo); 255154655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith if (T.isNull()) { 255254655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith // An error occurred parsing the trailing return type. 255354655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith T = Context.IntTy; 255454655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith D.setInvalidType(true); 255554655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith } 255634b41d939a1328f484511c6002ba2456db879a29Richard Smith } 255734b41d939a1328f484511c6002ba2456db879a29Richard Smith } 255834b41d939a1328f484511c6002ba2456db879a29Richard Smith 2559e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // C99 6.7.5.3p1: The return type may not be a function or array type. 2560e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // For conversion functions, we'll diagnose this particular error later. 2561e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith if ((T->isArrayType() || T->isFunctionType()) && 2562e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith (D.getName().getKind() != UnqualifiedId::IK_ConversionFunctionId)) { 2563e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith unsigned diagID = diag::err_func_returning_array_function; 2564e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // Last processing chunk in block context means this function chunk 2565e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith // represents the block. 2566e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith if (chunkIndex == 0 && 2567e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith D.getContext() == Declarator::BlockLiteralContext) 2568e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith diagID = diag::err_block_returning_array_function; 25698cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Loc, diagID) << T->isFunctionType() << T; 2570e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith T = Context.IntTy; 2571e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith D.setInvalidType(true); 2572e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith } 2573e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith 2574aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // Do not allow returning half FP value. 2575aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // FIXME: This really should be in BuildFunctionType. 2576aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov if (T->isHalfType()) { 257719dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly if (S.getLangOpts().OpenCL) { 257819dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly if (!S.getOpenCLOptions().cl_khr_fp16) { 257919dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly S.Diag(D.getIdentifierLoc(), diag::err_opencl_half_return) << T; 258019dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly D.setInvalidType(true); 258119dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly } 258219dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly } else { 258319dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly S.Diag(D.getIdentifierLoc(), 258419dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly diag::err_parameters_retval_cannot_have_fp16_type) << 1; 258519dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly D.setInvalidType(true); 258619dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly } 2587aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov } 2588aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov 25895291c3cec0dbe8ad1d8e7e67e93af2b1586d5400Douglas Gregor // cv-qualifiers on return types are pointless except when the type is a 25905291c3cec0dbe8ad1d8e7e67e93af2b1586d5400Douglas Gregor // class type in C++. 25918c952cd40ccec9d720931f27e7d722fed207d536Richard Smith if ((T.getCVRQualifiers() || T->isAtomicType()) && 25928c952cd40ccec9d720931f27e7d722fed207d536Richard Smith !(S.getLangOpts().CPlusPlus && 25938c952cd40ccec9d720931f27e7d722fed207d536Richard Smith (T->isDependentType() || T->isRecordType()))) 25948c952cd40ccec9d720931f27e7d722fed207d536Richard Smith diagnoseIgnoredFunctionQualifiers(S, T, D, chunkIndex); 2595d067c07c6cbf099b25aba38bcb66f38e79d0c420Chandler Carruth 259602dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor // Objective-C ARC ownership qualifiers are ignored on the function 259702dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor // return type (by type canonicalization). Complain if this attribute 259802dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor // was written here. 259902dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor if (T.getQualifiers().hasObjCLifetime()) { 260002dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor SourceLocation AttrLoc; 260102dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor if (chunkIndex + 1 < D.getNumTypeObjects()) { 260202dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor DeclaratorChunk ReturnTypeChunk = D.getTypeObject(chunkIndex + 1); 260302dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor for (const AttributeList *Attr = ReturnTypeChunk.getAttrs(); 260402dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor Attr; Attr = Attr->getNext()) { 260502dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor if (Attr->getKind() == AttributeList::AT_ObjCOwnership) { 260602dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor AttrLoc = Attr->getLoc(); 260702dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor break; 260802dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 260902dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 261002dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 261102dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor if (AttrLoc.isInvalid()) { 261202dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor for (const AttributeList *Attr 261302dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor = D.getDeclSpec().getAttributes().getList(); 261402dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor Attr; Attr = Attr->getNext()) { 261502dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor if (Attr->getKind() == AttributeList::AT_ObjCOwnership) { 261602dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor AttrLoc = Attr->getLoc(); 261702dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor break; 261802dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 261902dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 262002dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 262102dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor 262202dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor if (AttrLoc.isValid()) { 262302dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor // The ownership attributes are almost always written via 262402dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor // the predefined 262502dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor // __strong/__weak/__autoreleasing/__unsafe_unretained. 262602dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor if (AttrLoc.isMacroID()) 262702dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor AttrLoc = S.SourceMgr.getImmediateExpansionRange(AttrLoc).first; 262802dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor 262902dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor S.Diag(AttrLoc, diag::warn_arc_lifetime_result_type) 263002dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor << T.getQualifiers().getObjCLifetime(); 263102dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 263202dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor } 263302dd79830979e6d83d4420377e8f4c9e4a77439bDouglas Gregor 26348cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.CPlusPlus && D.getDeclSpec().isTypeSpecOwned()) { 2635402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor // C++ [dcl.fct]p6: 2636402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor // Types shall not be defined in return or parameter types. 2637b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall TagDecl *Tag = cast<TagDecl>(D.getDeclSpec().getRepAsDecl()); 26385e1cdac63c3d9c9b32fa41fa0b2d242a58a20d49John McCall if (Tag->isCompleteDefinition()) 26398cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(Tag->getLocation(), diag::err_type_defined_in_result_type) 2640402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor << Context.getTypeDeclType(Tag); 2641402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor } 2642402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor 26433cc9726a493d90bd8faf094986a59352fd3461cbSebastian Redl // Exception specs are not allowed in typedefs. Complain, but add it 26443cc9726a493d90bd8faf094986a59352fd3461cbSebastian Redl // anyway. 2645162e1c1b487352434552147967c3dd296ebee2f7Richard Smith if (IsTypedefName && FTI.getExceptionSpecType()) 26468cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(FTI.getExceptionSpecLoc(), diag::err_exception_spec_in_typedef) 26473e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith << (D.getContext() == Declarator::AliasDeclContext || 26483e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith D.getContext() == Declarator::AliasTemplateContext); 26493cc9726a493d90bd8faf094986a59352fd3461cbSebastian Redl 2650b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // If we see "T var();" or "T var(T());" at block scope, it is probably 2651b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith // an attempt to initialize a variable, not a function declaration. 2652b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith if (FTI.isAmbiguous) 2653b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith warnAboutAmbiguousFunction(S, D, DeclType, T); 2654b9c6261d02f688d0a9a36b736ad5956fbc737854Richard Smith 26558cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (!FTI.NumArgs && !FTI.isVariadic && !LangOpts.CPlusPlus) { 26562865474261a608c7873b87ba4af110d17907896dJohn McCall // Simple void foo(), where the incoming T is the result type. 26572865474261a608c7873b87ba4af110d17907896dJohn McCall T = Context.getFunctionNoProtoType(T); 26582865474261a608c7873b87ba4af110d17907896dJohn McCall } else { 26592865474261a608c7873b87ba4af110d17907896dJohn McCall // We allow a zero-parameter variadic function in C if the 26602865474261a608c7873b87ba4af110d17907896dJohn McCall // function is marked with the "overloadable" attribute. Scan 26612865474261a608c7873b87ba4af110d17907896dJohn McCall // for this attribute now. 26628cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (!FTI.NumArgs && FTI.isVariadic && !LangOpts.CPlusPlus) { 2663965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor bool Overloadable = false; 2664965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor for (const AttributeList *Attrs = D.getAttributes(); 2665965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor Attrs; Attrs = Attrs->getNext()) { 26668e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (Attrs->getKind() == AttributeList::AT_Overloadable) { 2667965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor Overloadable = true; 2668965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor break; 2669965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor } 2670965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor } 2671965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor 2672965acbb321e94e36aa5365126eee46b97745fdbbDouglas Gregor if (!Overloadable) 26738cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(FTI.getEllipsisLoc(), diag::err_ellipsis_first_arg); 2674c6f7345e44e079f373d6bdecaa06c7e06574dc27Argyrios Kyrtzidis } 26752865474261a608c7873b87ba4af110d17907896dJohn McCall 26762865474261a608c7873b87ba4af110d17907896dJohn McCall if (FTI.NumArgs && FTI.ArgInfo[0].Param == 0) { 2677788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner // C99 6.7.5.3p3: Reject int(x,y,z) when it's not a function 2678788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner // definition. 26798cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(FTI.ArgInfo[0].IdentLoc, diag::err_ident_list_in_fn_declaration); 26802865474261a608c7873b87ba4af110d17907896dJohn McCall D.setInvalidType(true); 2681d5668a2447c2afeea38815b51a80a5a6ac235599Argyrios Kyrtzidis // Recover by creating a K&R-style function type. 2682d5668a2447c2afeea38815b51a80a5a6ac235599Argyrios Kyrtzidis T = Context.getFunctionNoProtoType(T); 26832865474261a608c7873b87ba4af110d17907896dJohn McCall break; 26842865474261a608c7873b87ba4af110d17907896dJohn McCall } 26852865474261a608c7873b87ba4af110d17907896dJohn McCall 2686e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall FunctionProtoType::ExtProtoInfo EPI; 2687e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI.Variadic = FTI.isVariadic; 268854655be65585ed6618fdd7a19fa6c70efc321d3aRichard Smith EPI.HasTrailingReturn = FTI.hasTrailingReturnType(); 2689e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall EPI.TypeQuals = FTI.TypeQuals; 2690c938c1668b4fd12af154e965dd935a89e4801a70Douglas Gregor EPI.RefQualifier = !FTI.hasRefQualifier()? RQ_None 2691c938c1668b4fd12af154e965dd935a89e4801a70Douglas Gregor : FTI.RefQualifierIsLValueRef? RQ_LValue 2692c938c1668b4fd12af154e965dd935a89e4801a70Douglas Gregor : RQ_RValue; 269391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 26945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Otherwise, we have a function with an argument list that is 26955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // potentially variadic. 26965f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<QualType, 16> ArgTys; 26972865474261a608c7873b87ba4af110d17907896dJohn McCall ArgTys.reserve(FTI.NumArgs); 26981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 26995f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<bool, 16> ConsumedArguments; 2700f85e193739c953358c865005855253af4f68a497John McCall ConsumedArguments.reserve(FTI.NumArgs); 2701f85e193739c953358c865005855253af4f68a497John McCall bool HasAnyConsumedArguments = false; 2702f85e193739c953358c865005855253af4f68a497John McCall 27035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer for (unsigned i = 0, e = FTI.NumArgs; i != e; ++i) { 2704d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall ParmVarDecl *Param = cast<ParmVarDecl>(FTI.ArgInfo[i].Param); 27058123a95c33b792d35c2e4992ba6e27882748fb0dChris Lattner QualType ArgTy = Param->getType(); 270678c75fb3d275079c5fab30eeb33077958f2b0265Chris Lattner assert(!ArgTy.isNull() && "Couldn't parse type?"); 27072dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor 27082dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor // Adjust the parameter type. 270991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier assert((ArgTy == Context.getAdjustedParameterType(ArgTy)) && 271079e6bd379773447a74cc3e579d9081e4c5cb6d63Douglas Gregor "Unadjusted type?"); 27112dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor 27125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // Look for 'void'. void is allowed only as a single argument to a 27135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // function with no other parameters (C99 6.7.5.3p10). We record 271472564e73277e29f6db3305d1f27ba408abb7ed88Douglas Gregor // int(void) as a FunctionProtoType with an empty argument list. 27152dc0e64e57b2a1786fa53a7dbd1d5c8e255eadb0Douglas Gregor if (ArgTy->isVoidType()) { 27165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // If this is something like 'float(int, void)', reject it. 'void' 27175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // is an incomplete type (C99 6.2.5p19) and function decls cannot 27185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // have arguments of incomplete type. 27195f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer if (FTI.NumArgs != 1 || FTI.isVariadic) { 27208cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Loc, diag::err_void_only_param); 27212ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner ArgTy = Context.IntTy; 27228123a95c33b792d35c2e4992ba6e27882748fb0dChris Lattner Param->setType(ArgTy); 27232ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner } else if (FTI.ArgInfo[i].Ident) { 27242ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner // Reject, but continue to parse 'int(void abc)'. 27258cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(FTI.ArgInfo[i].IdentLoc, 27264565d4e83cec55356fe9c75929579eacced9da36Chris Lattner diag::err_param_with_void_type); 27272ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner ArgTy = Context.IntTy; 27288123a95c33b792d35c2e4992ba6e27882748fb0dChris Lattner Param->setType(ArgTy); 27292ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner } else { 27302ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner // Reject, but continue to parse 'float(const void)'. 27310953e767ff7817f97b3ab20896b229891eeff45bJohn McCall if (ArgTy.hasQualifiers()) 27328cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Loc, diag::err_void_param_qualified); 27331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 27342ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner // Do not add 'void' to the ArgTys list. 27352ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner break; 27362ff5426cd83ae02378efacdfeb70d6785eb09a30Chris Lattner } 2737aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov } else if (ArgTy->isHalfType()) { 2738aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // Disallow half FP arguments. 2739aa4a99b4a62615db243f7a5c433169f2fc704420Anton Korobeynikov // FIXME: This really should be in BuildFunctionType. 274019dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly if (S.getLangOpts().OpenCL) { 274119dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly if (!S.getOpenCLOptions().cl_khr_fp16) { 274219dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly S.Diag(Param->getLocation(), 274319dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly diag::err_opencl_half_argument) << ArgTy; 274419dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly D.setInvalidType(); 27459dd74c5504c743c96ea3a1d691d6a75ec3a98147John McCall Param->setInvalidDecl(); 274619dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly } 274719dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly } else { 274819dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly S.Diag(Param->getLocation(), 274919dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly diag::err_parameters_retval_cannot_have_fp16_type) << 0; 275019dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly D.setInvalidType(); 275119dbb20ac4371fae3190379a7e7bd467af3c00aaJoey Gouly } 2752eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman } else if (!FTI.hasPrototype) { 2753eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman if (ArgTy->isPromotableIntegerType()) { 2754a95d75769edae299816ec7fd9bbcdf1ef617c5c9Eli Friedman ArgTy = Context.getPromotedIntegerType(ArgTy); 2755eecf5fa12d5426637c47d7072f0c193a8d7ff68bJohn McCall Param->setKNRPromoted(true); 2756183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall } else if (const BuiltinType* BTy = ArgTy->getAs<BuiltinType>()) { 2757eecf5fa12d5426637c47d7072f0c193a8d7ff68bJohn McCall if (BTy->getKind() == BuiltinType::Float) { 2758eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman ArgTy = Context.DoubleTy; 2759eecf5fa12d5426637c47d7072f0c193a8d7ff68bJohn McCall Param->setKNRPromoted(true); 2760eecf5fa12d5426637c47d7072f0c193a8d7ff68bJohn McCall } 2761eb4b7051a596560ef4a1846e3714707f44e9dc30Eli Friedman } 27625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 276356a965c0f77c9e6bffd65cc8f8796442a8527381Fariborz Jahanian 27648cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.ObjCAutoRefCount) { 2765f85e193739c953358c865005855253af4f68a497John McCall bool Consumed = Param->hasAttr<NSConsumedAttr>(); 2766f85e193739c953358c865005855253af4f68a497John McCall ConsumedArguments.push_back(Consumed); 2767f85e193739c953358c865005855253af4f68a497John McCall HasAnyConsumedArguments |= Consumed; 2768f85e193739c953358c865005855253af4f68a497John McCall } 2769f85e193739c953358c865005855253af4f68a497John McCall 277054e14c4db764c0636160d26c5bbf491637c83a76John McCall ArgTys.push_back(ArgTy); 27715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2772465226e23a3008bd68973513dda1f9e3cd27dbddSebastian Redl 2773f85e193739c953358c865005855253af4f68a497John McCall if (HasAnyConsumedArguments) 2774f85e193739c953358c865005855253af4f68a497John McCall EPI.ConsumedArguments = ConsumedArguments.data(); 2775f85e193739c953358c865005855253af4f68a497John McCall 27765f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<QualType, 4> Exceptions; 277774e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor SmallVector<ParsedType, 2> DynamicExceptions; 277874e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor SmallVector<SourceRange, 2> DynamicExceptionRanges; 277974e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor Expr *NoexceptExpr = 0; 278091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 27818b5b4099c61a136e9a1714c4d8a593febe942268Sebastian Redl if (FTI.getExceptionSpecType() == EST_Dynamic) { 278274e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor // FIXME: It's rather inefficient to have to split into two vectors 278374e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor // here. 278474e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor unsigned N = FTI.NumExceptions; 278574e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptions.reserve(N); 278674e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptionRanges.reserve(N); 278774e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor for (unsigned I = 0; I != N; ++I) { 278874e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptions.push_back(FTI.Exceptions[I].Ty); 278974e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptionRanges.push_back(FTI.Exceptions[I].Range); 2790e23cf437fe76b1ed02d63c3f61b456fd48a915f5John McCall } 27918b5b4099c61a136e9a1714c4d8a593febe942268Sebastian Redl } else if (FTI.getExceptionSpecType() == EST_ComputedNoexcept) { 279274e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor NoexceptExpr = FTI.NoexceptExpr; 279374e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor } 279491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 279574e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor S.checkExceptionSpecification(FTI.getExceptionSpecType(), 279674e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptions, 279774e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor DynamicExceptionRanges, 279874e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor NoexceptExpr, 279974e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor Exceptions, 280074e2fc332e07c76d4e69ccbd0e9e47a0bafd3908Douglas Gregor EPI); 280191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 2802bea522ff43a3f11c7a2bc7949119dbb9fce19e39Jordan Rose T = Context.getFunctionType(T, ArgTys, EPI); 28035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 280404a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 28055f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer break; 28065f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2807f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl case DeclaratorChunk::MemberPointer: 2808f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl // The scope spec must refer to a class, or be dependent. 28097bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara CXXScopeSpec &SS = DeclType.Mem.Scope(); 2810f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl QualType ClsType; 28117bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara if (SS.isInvalid()) { 2812edc287751a4b05e3b4d8ff2b38fa30c5b59a548bJeffrey Yasskin // Avoid emitting extra errors if we already errored on the scope. 2813edc287751a4b05e3b4d8ff2b38fa30c5b59a548bJeffrey Yasskin D.setInvalidType(true); 28148cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis } else if (S.isDependentScopeSpecifier(SS) || 28158cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis dyn_cast_or_null<CXXRecordDecl>(S.computeDeclContext(SS))) { 28161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump NestedNameSpecifier *NNS 28177bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara = static_cast<NestedNameSpecifier*>(SS.getScopeRep()); 281887c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor NestedNameSpecifier *NNSPrefix = NNS->getPrefix(); 281987c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor switch (NNS->getKind()) { 282087c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::Identifier: 28217bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara ClsType = Context.getDependentNameType(ETK_None, NNSPrefix, 28224a2023f5014e82389d5980d307b89c545dbbac81Douglas Gregor NNS->getAsIdentifier()); 282387c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor break; 282487c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor 282587c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::Namespace: 282614aba76042e041b2c5e439bf4ae353a0a3c7fd73Douglas Gregor case NestedNameSpecifier::NamespaceAlias: 282787c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::Global: 28289f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("Nested-name-specifier must name a type"); 28297bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara 283087c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::TypeSpec: 283187c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor case NestedNameSpecifier::TypeSpecWithTemplate: 283287c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor ClsType = QualType(NNS->getAsType(), 0); 283391ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // Note: if the NNS has a prefix and ClsType is a nondependent 283491ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // TemplateSpecializationType, then the NNS prefix is NOT included 283591ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // in ClsType; hence we wrap ClsType into an ElaboratedType. 283691ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // NOTE: in particular, no wrap occurs if ClsType already is an 283791ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara // Elaborated, DependentName, or DependentTemplateSpecialization. 283891ce2c4484e56cdc8068cebaaf2bb42362b0e1a6Abramo Bagnara if (NNSPrefix && isa<TemplateSpecializationType>(NNS->getAsType())) 28397bd067635df79f6ce4b9ffee394ea6d9e86e4290Abramo Bagnara ClsType = Context.getElaboratedType(ETK_None, NNSPrefix, ClsType); 284087c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor break; 284187c12c4a4667279dacb3d4a93c64b49148a0ff79Douglas Gregor } 2842f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } else { 28438cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(DeclType.Mem.Scope().getBeginLoc(), 2844949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor diag::err_illegal_decl_mempointer_in_nonclass) 2845949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor << (D.getIdentifier() ? D.getIdentifier()->getName() : "type name") 2846949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor << DeclType.Mem.Scope().getRange(); 2847f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl D.setInvalidType(true); 2848f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 2849f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl 2850949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (!ClsType.isNull()) 28518cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildMemberPointerType(T, ClsType, DeclType.Loc, D.getIdentifier()); 2852949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor if (T.isNull()) { 2853f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl T = Context.IntTy; 2854949bf69136e07fb7968d84bc21d9272ff343ffdbDouglas Gregor D.setInvalidType(true); 28552865474261a608c7873b87ba4af110d17907896dJohn McCall } else if (DeclType.Mem.TypeQuals) { 28568cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis T = S.BuildQualifiedType(T, DeclType.Loc, DeclType.Mem.TypeQuals); 2857f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 2858f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl break; 2859f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl } 2860f30208ad5b334e93582e846a2a0c92f38a607b8aSebastian Redl 2861cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor if (T.isNull()) { 2862cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor D.setInvalidType(true); 2863cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor T = Context.IntTy; 2864cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor } 2865cd281c3ded486ced5aad29dd7c3fa22b7514c3d8Douglas Gregor 2866c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // See if there are any attributes on this declarator chunk. 2867711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (AttributeList *attrs = const_cast<AttributeList*>(DeclType.getAttrs())) 2868f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith processTypeAttrs(state, T, TAL_DeclChunk, attrs); 28695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer } 2870971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis 28718cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (LangOpts.CPlusPlus && T->isFunctionType()) { 2872183700f494ec9b6701b6efe82bcb25f4c79ba561John McCall const FunctionProtoType *FnTy = T->getAs<FunctionProtoType>(); 2873778ed741de8ada0049b89608af0abdb5ae6e106eChris Lattner assert(FnTy && "Why oh why is there not a FunctionProtoType here?"); 2874971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis 287591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // C++ 8.3.5p4: 2876708f3b8e350a5c0605889a4f32b26686864495caDouglas Gregor // A cv-qualifier-seq shall only be part of the function type 2877708f3b8e350a5c0605889a4f32b26686864495caDouglas Gregor // for a nonstatic member function, the function type to which a pointer 2878708f3b8e350a5c0605889a4f32b26686864495caDouglas Gregor // to member refers, or the top-level function type of a function typedef 2879708f3b8e350a5c0605889a4f32b26686864495caDouglas Gregor // declaration. 2880683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor // 2881683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor // Core issue 547 also allows cv-qualifiers on function types that are 2882683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor // top-level template type arguments. 2883613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall bool FreeFunction; 2884613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall if (!D.getCXXScopeSpec().isSet()) { 2885906a7e1c0f272f7e539c82dda01f4644031ce637Eli Friedman FreeFunction = ((D.getContext() != Declarator::MemberContext && 2886906a7e1c0f272f7e539c82dda01f4644031ce637Eli Friedman D.getContext() != Declarator::LambdaExprContext) || 2887613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall D.getDeclSpec().isFriendSpecified()); 2888613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall } else { 28898cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis DeclContext *DC = S.computeDeclContext(D.getCXXScopeSpec()); 2890613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall FreeFunction = (DC && !DC->isRecord()); 2891613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall } 2892613ef3d4c144f8c35224daf28a187426d2044aeeJohn McCall 2893d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // C++11 [dcl.fct]p6 (w/DR1417): 2894d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // An attempt to specify a function type with a cv-qualifier-seq or a 2895d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // ref-qualifier (including by typedef-name) is ill-formed unless it is: 2896d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the function type for a non-static member function, 2897d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the function type to which a pointer to member refers, 2898d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the top-level function type of a function typedef declaration or 2899d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // alias-declaration, 2900d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the type-id in the default argument of a type-parameter, or 2901d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // - the type-id of a template-argument for a type-parameter 2902d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (IsQualifiedFunction && 2903d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith !(!FreeFunction && 2904d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith D.getDeclSpec().getStorageClassSpec() != DeclSpec::SCS_static) && 2905d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith !IsTypedefName && 2906d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith D.getContext() != Declarator::TemplateTypeArgContext) { 290796a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar SourceLocation Loc = D.getLocStart(); 2908d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith SourceRange RemovalRange; 2909d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith unsigned I; 2910d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (D.isFunctionDeclarator(I)) { 2911d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith SmallVector<SourceLocation, 4> RemovalLocs; 2912d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith const DeclaratorChunk &Chunk = D.getTypeObject(I); 2913d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith assert(Chunk.Kind == DeclaratorChunk::Function); 2914d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (Chunk.Fun.hasRefQualifier()) 2915d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith RemovalLocs.push_back(Chunk.Fun.getRefQualifierLoc()); 2916d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (Chunk.Fun.TypeQuals & Qualifiers::Const) 2917d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith RemovalLocs.push_back(Chunk.Fun.getConstQualifierLoc()); 2918d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (Chunk.Fun.TypeQuals & Qualifiers::Volatile) 2919d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith RemovalLocs.push_back(Chunk.Fun.getVolatileQualifierLoc()); 2920d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // FIXME: We do not track the location of the __restrict qualifier. 2921d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith //if (Chunk.Fun.TypeQuals & Qualifiers::Restrict) 2922d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // RemovalLocs.push_back(Chunk.Fun.getRestrictQualifierLoc()); 2923d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith if (!RemovalLocs.empty()) { 2924d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith std::sort(RemovalLocs.begin(), RemovalLocs.end(), 2925aa0cd85838f2a024e589ea4e8c2094130065af21Dmitri Gribenko BeforeThanCompare<SourceLocation>(S.getSourceManager())); 2926d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith RemovalRange = SourceRange(RemovalLocs.front(), RemovalLocs.back()); 2927d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith Loc = RemovalLocs.front(); 2928683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor } 2929683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor } 2930d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2931d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith S.Diag(Loc, diag::err_invalid_qualified_function_type) 2932d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith << FreeFunction << D.isFunctionDeclarator() << T 2933d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith << getFunctionQualifiersAsString(FnTy) 2934d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith << FixItHint::CreateRemoval(RemovalRange); 2935d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 2936d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith // Strip the cv-qualifiers and ref-qualifiers from the type. 2937d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith FunctionProtoType::ExtProtoInfo EPI = FnTy->getExtProtoInfo(); 2938d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith EPI.TypeQuals = 0; 2939d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith EPI.RefQualifier = RQ_None; 2940d37b360bf9f954af119c9805fdc79ab9d30e06c6Richard Smith 294191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier T = Context.getFunctionType(FnTy->getResultType(), 2942bea522ff43a3f11c7a2bc7949119dbb9fce19e39Jordan Rose ArrayRef<QualType>(FnTy->arg_type_begin(), 2943bea522ff43a3f11c7a2bc7949119dbb9fce19e39Jordan Rose FnTy->getNumArgs()), 2944bea522ff43a3f11c7a2bc7949119dbb9fce19e39Jordan Rose EPI); 2945e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith // Rebuild any parens around the identifier in the function type. 2946e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 2947e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith if (D.getTypeObject(i).Kind != DeclaratorChunk::Paren) 2948e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith break; 2949e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith T = S.BuildParenType(T); 2950e925322569cb4aad26cc62036a13e2d3daed862dRichard Smith } 2951971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis } 2952971c4fae6092976338b755af1d47dac07c8f16e3Argyrios Kyrtzidis } 29531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2954711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Apply any undistributed attributes from the declarator. 2955711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!T.isNull()) 2956711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (AttributeList *attrs = D.getAttributes()) 2957f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith processTypeAttrs(state, T, TAL_DeclName, attrs); 2958711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 2959711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Diagnose any ignored type attributes. 2960711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!T.isNull()) state.diagnoseIgnoredTypeAttrs(T); 2961711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 2962148f1f7936afd718bac7be95089e77673e43f16fPeter Collingbourne // C++0x [dcl.constexpr]p9: 2963148f1f7936afd718bac7be95089e77673e43f16fPeter Collingbourne // A constexpr specifier used in an object declaration declares the object 296491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // as const. 2965148f1f7936afd718bac7be95089e77673e43f16fPeter Collingbourne if (D.getDeclSpec().isConstexprSpecified() && T->isObjectType()) { 2966737801257f795632175517ffce4a80c62fc7bff7Sebastian Redl T.addConst(); 2967737801257f795632175517ffce4a80c62fc7bff7Sebastian Redl } 2968737801257f795632175517ffce4a80c62fc7bff7Sebastian Redl 296991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // If there was an ellipsis in the declarator, the declaration declares a 2970a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // parameter pack whose type may be a pack expansion type. 2971a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor if (D.hasEllipsis() && !T.isNull()) { 2972a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // C++0x [dcl.fct]p13: 297391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // A declarator-id or abstract-declarator containing an ellipsis shall 2974a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // only be used in a parameter-declaration. Such a parameter-declaration 2975a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // is a parameter pack (14.5.3). [...] 2976a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor switch (D.getContext()) { 2977a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::PrototypeContext: 2978a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // C++0x [dcl.fct]p13: 297991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // [...] When it is part of a parameter-declaration-clause, the 298091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // parameter pack is a function parameter pack (14.5.3). The type T 2981a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // of the declarator-id of the function parameter pack shall contain 298291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // a template parameter pack; each template parameter pack in T is 2983a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // expanded by the function parameter pack. 2984a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // 2985a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // We represent function parameter packs as function parameters whose 2986a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // type is a pack expansion. 2987a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor if (!T->containsUnexpandedParameterPack()) { 298891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier S.Diag(D.getEllipsisLoc(), 2989a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor diag::err_function_parameter_pack_without_parameter_packs) 2990a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor << T << D.getSourceRange(); 2991a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor D.setEllipsisLoc(SourceLocation()); 2992a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } else { 299366874fb18afbffb8b2ca05576851a64534be3352David Blaikie T = Context.getPackExpansionType(T, None); 2994a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } 2995a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor break; 299691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 2997a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::TemplateParamContext: 2998a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // C++0x [temp.param]p15: 299991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // If a template-parameter is a [...] is a parameter-declaration that 3000a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // declares a parameter pack (8.3.5), then the template-parameter is a 3001a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // template parameter pack (14.5.3). 3002a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // 3003a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // Note: core issue 778 clarifies that, if there are any unexpanded 3004a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // parameter packs in the type of the non-type template parameter, then 3005a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // it expands those parameter packs. 3006a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor if (T->containsUnexpandedParameterPack()) 300766874fb18afbffb8b2ca05576851a64534be3352David Blaikie T = Context.getPackExpansionType(T, None); 3008e5acd13f885ac95d0f2dafda245625b8190235acRichard Smith else 3009e5acd13f885ac95d0f2dafda245625b8190235acRichard Smith S.Diag(D.getEllipsisLoc(), 301080ad52f327b532bded5c5b0ee38779d841c6cd35Richard Smith LangOpts.CPlusPlus11 3011e5acd13f885ac95d0f2dafda245625b8190235acRichard Smith ? diag::warn_cxx98_compat_variadic_templates 3012e5acd13f885ac95d0f2dafda245625b8190235acRichard Smith : diag::ext_variadic_templates); 3013a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor break; 301491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 3015a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::FileContext: 3016a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::KNRTypeListContext: 3017cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCParameterContext: // FIXME: special diagnostic here? 3018cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall case Declarator::ObjCResultContext: // FIXME: special diagnostic here? 3019a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::TypeNameContext: 30200b8c98f3ddf83adcb9e9d98b68ce38e970cdee73Argyrios Kyrtzidis case Declarator::CXXNewContext: 3021162e1c1b487352434552147967c3dd296ebee2f7Richard Smith case Declarator::AliasDeclContext: 30223e4c6c4c79a03f5cb0c4671d7c282d623c6dc35eRichard Smith case Declarator::AliasTemplateContext: 3023a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::MemberContext: 3024a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::BlockContext: 3025a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::ForContext: 3026a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::ConditionContext: 3027a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::CXXCatchContext: 302817b6399f8461c5b7e1c6f367b0a0dde49f921240Argyrios Kyrtzidis case Declarator::ObjCCatchContext: 3029a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor case Declarator::BlockLiteralContext: 3030f88c400085eac7068399d0a01dbad89f8c579f07Eli Friedman case Declarator::LambdaExprContext: 30317796eb5643244f3134834253ce5ea89107ac21c1Richard Smith case Declarator::TrailingReturnContext: 3032683a81f4373cf1fa9d41a751dca6f7c36125b058Douglas Gregor case Declarator::TemplateTypeArgContext: 3033a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // FIXME: We may want to allow parameter packs in block-literal contexts 3034a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // in the future. 30358cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis S.Diag(D.getEllipsisLoc(), diag::err_ellipsis_in_declarator_not_parameter); 3036a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor D.setEllipsisLoc(SourceLocation()); 3037a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor break; 3038a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } 3039a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } 3040e7397c6a1bb2b205c5fe678e26199eb26d22e38eRichard Smith 3041bf1a028246d884a540aeafa38e89be59a269b072John McCall if (T.isNull()) 3042bf1a028246d884a540aeafa38e89be59a269b072John McCall return Context.getNullTypeSourceInfo(); 3043bf1a028246d884a540aeafa38e89be59a269b072John McCall else if (D.isInvalidType()) 3044bf1a028246d884a540aeafa38e89be59a269b072John McCall return Context.getTrivialTypeSourceInfo(T); 3045db7abf78dedc2ef6ccb42b3dac6ab330fe2ea469Argyrios Kyrtzidis 30468cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis return S.GetTypeSourceInfoForDeclarator(D, T, TInfo); 30478cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis} 30488cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 30498cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// GetTypeForDeclarator - Convert the type for the specified 30508cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// declarator to Type instances. 30518cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// 30528cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// The result of this call will never be null, but the associated 30538cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis/// type may be a null type if there's an unrecoverable error. 30548cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios KyrtzidisTypeSourceInfo *Sema::GetTypeForDeclarator(Declarator &D, Scope *S) { 30558cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // Determine the type of the declarator. Not all forms of declarator 30568cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis // have a type. 30578cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 30588cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis TypeProcessingState state(*this, D); 30598cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 30608cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis TypeSourceInfo *ReturnTypeInfo = 0; 30618cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis QualType T = GetDeclSpecTypeForDeclarator(state, ReturnTypeInfo); 30628cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis if (T.isNull()) 30638cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis return Context.getNullTypeSourceInfo(); 30648cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis 30654e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (D.isPrototypeContext() && getLangOpts().ObjCAutoRefCount) 30668cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis inferARCWriteback(state, T); 306791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 30688cfa57b348d4d5a58d92764a60280bf88e4e49aeArgyrios Kyrtzidis return GetFullTypeForDeclarator(state, T, ReturnTypeInfo); 30695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 30705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 307131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidisstatic void transferARCOwnershipToDeclSpec(Sema &S, 307231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis QualType &declSpecTy, 307331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers::ObjCLifetime ownership) { 307431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (declSpecTy->isObjCRetainableType() && 307531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis declSpecTy.getObjCLifetime() == Qualifiers::OCL_None) { 307631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers qs; 307731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis qs.addObjCLifetime(ownership); 307831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis declSpecTy = S.Context.getQualifiedType(declSpecTy, qs); 307931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 308031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis} 308131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 308231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidisstatic void transferARCOwnershipToDeclaratorChunk(TypeProcessingState &state, 308331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers::ObjCLifetime ownership, 308431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis unsigned chunkIndex) { 308531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Sema &S = state.getSema(); 308631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Declarator &D = state.getDeclarator(); 308731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 308831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // Look for an explicit lifetime attribute. 308931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis DeclaratorChunk &chunk = D.getTypeObject(chunkIndex); 309031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis for (const AttributeList *attr = chunk.getAttrs(); attr; 309131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis attr = attr->getNext()) 30928e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr->getKind() == AttributeList::AT_ObjCOwnership) 309331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return; 309431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 309531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis const char *attrStr = 0; 309631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis switch (ownership) { 30973026348bd4c13a0f83b59839f64065e0fcbea253David Blaikie case Qualifiers::OCL_None: llvm_unreachable("no ownership!"); 309831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case Qualifiers::OCL_ExplicitNone: attrStr = "none"; break; 309931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case Qualifiers::OCL_Strong: attrStr = "strong"; break; 310031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case Qualifiers::OCL_Weak: attrStr = "weak"; break; 310131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case Qualifiers::OCL_Autoreleasing: attrStr = "autoreleasing"; break; 310231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 310331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 310431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // If there wasn't one, add one (with an invalid source location 310531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // so that we don't make an AttributedType for it). 310631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis AttributeList *attr = D.getAttributePool() 310731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis .create(&S.Context.Idents.get("objc_ownership"), SourceLocation(), 310831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis /*scope*/ 0, SourceLocation(), 310931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis &S.Context.Idents.get(attrStr), SourceLocation(), 311093f95f2a2cbb6bb3d17bfb5fc74ce1cccea751b6Sean Hunt /*args*/ 0, 0, AttributeList::AS_GNU); 311131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis spliceAttrIntoList(*attr, chunk.getAttrListRef()); 311231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 311331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // TODO: mark whether we did this inference? 311431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis} 311531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 311648d798ce32447607144db70a484cdb99c1180663Benjamin Kramer/// \brief Used for transferring ownership in casts resulting in l-values. 311731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidisstatic void transferARCOwnership(TypeProcessingState &state, 311831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis QualType &declSpecTy, 311931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers::ObjCLifetime ownership) { 312031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Sema &S = state.getSema(); 312131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Declarator &D = state.getDeclarator(); 312231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 312331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis int inner = -1; 31246ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis bool hasIndirection = false; 312531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 312631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis DeclaratorChunk &chunk = D.getTypeObject(i); 312731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis switch (chunk.Kind) { 312831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Paren: 312931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis // Ignore parens. 313031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis break; 313131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 313231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Array: 313331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Reference: 313431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Pointer: 31356ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis if (inner != -1) 31366ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis hasIndirection = true; 313731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis inner = i; 313831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis break; 313931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 314031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::BlockPointer: 31416ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis if (inner != -1) 31426ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis transferARCOwnershipToDeclaratorChunk(state, ownership, i); 31436ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis return; 314431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 314531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::Function: 314631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis case DeclaratorChunk::MemberPointer: 314731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return; 314831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 314931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 315031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 315131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (inner == -1) 31526ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis return; 315331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 315491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier DeclaratorChunk &chunk = D.getTypeObject(inner); 315531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (chunk.Kind == DeclaratorChunk::Pointer) { 315631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (declSpecTy->isObjCRetainableType()) 315731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return transferARCOwnershipToDeclSpec(S, declSpecTy, ownership); 31586ee54925f709176a33aab4727bc35bea2d05aca4Argyrios Kyrtzidis if (declSpecTy->isObjCObjectType() && hasIndirection) 315931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return transferARCOwnershipToDeclaratorChunk(state, ownership, inner); 316031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } else { 316131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis assert(chunk.Kind == DeclaratorChunk::Array || 316231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis chunk.Kind == DeclaratorChunk::Reference); 316331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return transferARCOwnershipToDeclSpec(S, declSpecTy, ownership); 316431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 316531862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis} 316631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 316731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios KyrtzidisTypeSourceInfo *Sema::GetTypeForDeclaratorCast(Declarator &D, QualType FromTy) { 316831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis TypeProcessingState state(*this, D); 316931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 317031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis TypeSourceInfo *ReturnTypeInfo = 0; 317131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis QualType declSpecTy = GetDeclSpecTypeForDeclarator(state, ReturnTypeInfo); 317231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (declSpecTy.isNull()) 317331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return Context.getNullTypeSourceInfo(); 317431862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 31754e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().ObjCAutoRefCount) { 317631862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis Qualifiers::ObjCLifetime ownership = Context.getInnerObjCOwnership(FromTy); 317731862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis if (ownership != Qualifiers::OCL_None) 317831862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis transferARCOwnership(state, declSpecTy, ownership); 317931862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis } 318031862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 318131862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis return GetFullTypeForDeclarator(state, declSpecTy, ReturnTypeInfo); 318231862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis} 318331862ba5ea70b1f2c81d03f8a0100b61cd6f06f6Argyrios Kyrtzidis 318414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall/// Map an AttributedType::Kind to an AttributeList::Kind. 318514aa2175416f79ef17811282afbf425f87d54ebfJohn McCallstatic AttributeList::Kind getAttrListKind(AttributedType::Kind kind) { 318614aa2175416f79ef17811282afbf425f87d54ebfJohn McCall switch (kind) { 318714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_address_space: 31888e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_AddressSpace; 318914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_regparm: 31908e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_Regparm; 319114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_vector_size: 31928e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_VectorSize; 319314aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_neon_vector_type: 31948e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_NeonVectorType; 319514aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_neon_polyvector_type: 31968e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_NeonPolyVectorType; 319714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_objc_gc: 31988e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_ObjCGC; 3199b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis case AttributedType::attr_objc_ownership: 32008e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_ObjCOwnership; 320114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_noreturn: 32028e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_NoReturn; 320314aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_cdecl: 32048e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_CDecl; 320514aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_fastcall: 32068e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_FastCall; 320714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_stdcall: 32088e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_StdCall; 320914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_thiscall: 32108e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_ThisCall; 321114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall case AttributedType::attr_pascal: 32128e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_Pascal; 3213414d8967e1d760ea1e19a4aca96b13777a8cf8c5Anton Korobeynikov case AttributedType::attr_pcs: 32148e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt return AttributeList::AT_Pcs; 3215263366f9241366f29ba65b703120f302490c39ffDerek Schuff case AttributedType::attr_pnaclcall: 3216263366f9241366f29ba65b703120f302490c39ffDerek Schuff return AttributeList::AT_PnaclCall; 321738980086c0f791e8c23cc882574f18e5b4a87db6Guy Benyei case AttributedType::attr_inteloclbicc: 321838980086c0f791e8c23cc882574f18e5b4a87db6Guy Benyei return AttributeList::AT_IntelOclBicc; 321914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall } 322014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall llvm_unreachable("unexpected attribute kind!"); 322114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall} 322214aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 322314aa2175416f79ef17811282afbf425f87d54ebfJohn McCallstatic void fillAttributedTypeLoc(AttributedTypeLoc TL, 322414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall const AttributeList *attrs) { 322514aa2175416f79ef17811282afbf425f87d54ebfJohn McCall AttributedType::Kind kind = TL.getAttrKind(); 322614aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 322714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall assert(attrs && "no type attributes in the expected location!"); 322814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall AttributeList::Kind parsedKind = getAttrListKind(kind); 322914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall while (attrs->getKind() != parsedKind) { 323014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall attrs = attrs->getNext(); 323114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall assert(attrs && "no matching attribute in expected location!"); 323214aa2175416f79ef17811282afbf425f87d54ebfJohn McCall } 323314aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 323414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall TL.setAttrNameLoc(attrs->getLoc()); 323514aa2175416f79ef17811282afbf425f87d54ebfJohn McCall if (TL.hasAttrExprOperand()) 323614aa2175416f79ef17811282afbf425f87d54ebfJohn McCall TL.setAttrExprOperand(attrs->getArg(0)); 323714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall else if (TL.hasAttrEnumOperand()) 323814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall TL.setAttrEnumOperandLoc(attrs->getParameterLoc()); 323914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 324014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall // FIXME: preserve this information to here. 324114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall if (TL.hasAttrOperand()) 324214aa2175416f79ef17811282afbf425f87d54ebfJohn McCall TL.setAttrOperandParensRange(SourceRange()); 324314aa2175416f79ef17811282afbf425f87d54ebfJohn McCall} 324414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 324551bd803fbdade51d674598ed45da3d54190a656cJohn McCallnamespace { 324651bd803fbdade51d674598ed45da3d54190a656cJohn McCall class TypeSpecLocFiller : public TypeLocVisitor<TypeSpecLocFiller> { 3247c21c7e9c2cded68f91be15be6847c9649242dc17Douglas Gregor ASTContext &Context; 324851bd803fbdade51d674598ed45da3d54190a656cJohn McCall const DeclSpec &DS; 3249f352bddf015e537350416c296dd2963524f554f9Argyrios Kyrtzidis 325051bd803fbdade51d674598ed45da3d54190a656cJohn McCall public: 325191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier TypeSpecLocFiller(ASTContext &Context, const DeclSpec &DS) 3252c21c7e9c2cded68f91be15be6847c9649242dc17Douglas Gregor : Context(Context), DS(DS) {} 3253f352bddf015e537350416c296dd2963524f554f9Argyrios Kyrtzidis 325414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall void VisitAttributedTypeLoc(AttributedTypeLoc TL) { 325514aa2175416f79ef17811282afbf425f87d54ebfJohn McCall fillAttributedTypeLoc(TL, DS.getAttributes().getList()); 325614aa2175416f79ef17811282afbf425f87d54ebfJohn McCall Visit(TL.getModifiedLoc()); 325714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall } 325851bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitQualifiedTypeLoc(QualifiedTypeLoc TL) { 325951bd803fbdade51d674598ed45da3d54190a656cJohn McCall Visit(TL.getUnqualifiedLoc()); 326051bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 326151bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitTypedefTypeLoc(TypedefTypeLoc TL) { 326251bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setNameLoc(DS.getTypeSpecTypeLoc()); 326351bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 326451bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) { 326551bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setNameLoc(DS.getTypeSpecTypeLoc()); 32661de6a6cb485fb58b4fb100282bb3cf298eedacd9Fariborz Jahanian // FIXME. We should have DS.getTypeSpecTypeEndLoc(). But, it requires 32671de6a6cb485fb58b4fb100282bb3cf298eedacd9Fariborz Jahanian // addition field. What we have is good enough for dispay of location 32681de6a6cb485fb58b4fb100282bb3cf298eedacd9Fariborz Jahanian // of 'fixit' on interface name. 32691de6a6cb485fb58b4fb100282bb3cf298eedacd9Fariborz Jahanian TL.setNameEndLoc(DS.getLocEnd()); 3270c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } 3271c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall void VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) { 3272c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall // Handle the base type, which might not have been written explicitly. 3273c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall if (DS.getTypeSpecType() == DeclSpec::TST_unspecified) { 3274c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall TL.setHasBaseTypeAsWritten(false); 3275c21c7e9c2cded68f91be15be6847c9649242dc17Douglas Gregor TL.getBaseLoc().initialize(Context, SourceLocation()); 3276c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } else { 3277c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall TL.setHasBaseTypeAsWritten(true); 3278c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Visit(TL.getBaseLoc()); 3279c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall } 328054e14c4db764c0636160d26c5bbf491637c83a76John McCall 3281c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall // Protocol qualifiers. 328254e14c4db764c0636160d26c5bbf491637c83a76John McCall if (DS.getProtocolQualifiers()) { 328354e14c4db764c0636160d26c5bbf491637c83a76John McCall assert(TL.getNumProtocols() > 0); 328454e14c4db764c0636160d26c5bbf491637c83a76John McCall assert(TL.getNumProtocols() == DS.getNumProtocolQualifiers()); 328554e14c4db764c0636160d26c5bbf491637c83a76John McCall TL.setLAngleLoc(DS.getProtocolLAngleLoc()); 328654e14c4db764c0636160d26c5bbf491637c83a76John McCall TL.setRAngleLoc(DS.getSourceRange().getEnd()); 328754e14c4db764c0636160d26c5bbf491637c83a76John McCall for (unsigned i = 0, e = DS.getNumProtocolQualifiers(); i != e; ++i) 328854e14c4db764c0636160d26c5bbf491637c83a76John McCall TL.setProtocolLoc(i, DS.getProtocolLocs()[i]); 328954e14c4db764c0636160d26c5bbf491637c83a76John McCall } else { 329054e14c4db764c0636160d26c5bbf491637c83a76John McCall assert(TL.getNumProtocols() == 0); 329154e14c4db764c0636160d26c5bbf491637c83a76John McCall TL.setLAngleLoc(SourceLocation()); 329254e14c4db764c0636160d26c5bbf491637c83a76John McCall TL.setRAngleLoc(SourceLocation()); 329354e14c4db764c0636160d26c5bbf491637c83a76John McCall } 329451bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 329554e14c4db764c0636160d26c5bbf491637c83a76John McCall void VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) { 329654e14c4db764c0636160d26c5bbf491637c83a76John McCall TL.setStarLoc(SourceLocation()); 3297c12c5bba6ceb6acd4e51e7a0fc03257da9cfd44eJohn McCall Visit(TL.getPointeeLoc()); 329851bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 3299833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall void VisitTemplateSpecializationTypeLoc(TemplateSpecializationTypeLoc TL) { 3300a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TypeSourceInfo *TInfo = 0; 3301b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 3302833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall 3303833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall // If we got no declarator info from previous Sema routines, 3304833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall // just fill with the typespec loc. 3305a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall if (!TInfo) { 33060daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara TL.initialize(Context, DS.getTypeSpecTypeNameLoc()); 3307833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall return; 3308833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall } 3309833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall 3310e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara TypeLoc OldTL = TInfo->getTypeLoc(); 3311e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara if (TInfo->getType()->getAs<ElaboratedType>()) { 331239e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie ElaboratedTypeLoc ElabTL = OldTL.castAs<ElaboratedTypeLoc>(); 331339e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie TemplateSpecializationTypeLoc NamedTL = ElabTL.getNamedTypeLoc() 331439e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie .castAs<TemplateSpecializationTypeLoc>(); 3315e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara TL.copy(NamedTL); 3316e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara } 3317e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara else 331839e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie TL.copy(OldTL.castAs<TemplateSpecializationTypeLoc>()); 3319833ca991c1bfc967f0995974ca86f66ba1f666b5John McCall } 3320cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall void VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) { 3321cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall assert(DS.getTypeSpecType() == DeclSpec::TST_typeofExpr); 3322cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setTypeofLoc(DS.getTypeSpecTypeLoc()); 3323cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setParensRange(DS.getTypeofParensRange()); 3324cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall } 3325cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall void VisitTypeOfTypeLoc(TypeOfTypeLoc TL) { 3326cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall assert(DS.getTypeSpecType() == DeclSpec::TST_typeofType); 3327cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setTypeofLoc(DS.getTypeSpecTypeLoc()); 3328cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setParensRange(DS.getTypeofParensRange()); 3329b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall assert(DS.getRepAsType()); 3330cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TypeSourceInfo *TInfo = 0; 3331b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 3332cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall TL.setUnderlyingTInfo(TInfo); 3333cfb708c354e2f30ccc5cba9d644650f408a1ec3eJohn McCall } 3334ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt void VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) { 3335ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt // FIXME: This holds only because we only have one unary transform. 3336ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt assert(DS.getTypeSpecType() == DeclSpec::TST_underlyingType); 3337ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt TL.setKWLoc(DS.getTypeSpecTypeLoc()); 3338ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt TL.setParensRange(DS.getTypeofParensRange()); 3339ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt assert(DS.getRepAsType()); 3340ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt TypeSourceInfo *TInfo = 0; 3341ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 3342ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt TL.setUnderlyingTInfo(TInfo); 3343ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } 3344ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor void VisitBuiltinTypeLoc(BuiltinTypeLoc TL) { 3345ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // By default, use the source location of the type specifier. 3346ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor TL.setBuiltinLoc(DS.getTypeSpecTypeLoc()); 3347ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor if (TL.needsExtraLocalData()) { 3348ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // Set info for the written builtin specifiers. 3349ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor TL.getWrittenBuiltinSpecs() = DS.getWrittenBuiltinSpecs(); 3350ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // Try to have a meaningful source location. 3351ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor if (TL.getWrittenSignSpec() != TSS_unspecified) 3352ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // Sign spec loc overrides the others (e.g., 'unsigned long'). 3353ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor TL.setBuiltinLoc(DS.getTypeSpecSignLoc()); 3354ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor else if (TL.getWrittenWidthSpec() != TSW_unspecified) 3355ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor // Width spec loc overrides type spec loc (e.g., 'short int'). 3356ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor TL.setBuiltinLoc(DS.getTypeSpecWidthLoc()); 3357ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor } 3358ddf889a2ad2888f1dea573987bbe952d9912c1a0Douglas Gregor } 3359e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara void VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) { 3360e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara ElaboratedTypeKeyword Keyword 3361e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara = TypeWithKeyword::getKeywordForTypeSpec(DS.getTypeSpecType()); 3362253e80b019727451edb4cbcad71277fcbe05ff0eNico Weber if (DS.getTypeSpecType() == TST_typename) { 3363e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara TypeSourceInfo *TInfo = 0; 3364b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 3365e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara if (TInfo) { 336639e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie TL.copy(TInfo->getTypeLoc().castAs<ElaboratedTypeLoc>()); 3367e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara return; 3368e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara } 3369e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara } 337038a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara TL.setElaboratedKeywordLoc(Keyword != ETK_None 337138a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara ? DS.getTypeSpecTypeLoc() 337238a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara : SourceLocation()); 3373e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara const CXXScopeSpec& SS = DS.getTypeSpecScope(); 33749e876876afc13aa671cc11a17c19907c599b9ab9Douglas Gregor TL.setQualifierLoc(SS.getWithLocInContext(Context)); 3375e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara Visit(TL.getNextTypeLoc().getUnqualifiedLoc()); 3376e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara } 3377e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara void VisitDependentNameTypeLoc(DependentNameTypeLoc TL) { 337866581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara assert(DS.getTypeSpecType() == TST_typename); 337966581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara TypeSourceInfo *TInfo = 0; 338066581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 338166581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara assert(TInfo); 338239e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie TL.copy(TInfo->getTypeLoc().castAs<DependentNameTypeLoc>()); 338333500955d731c73717af52088b7fc0e7a85681e7John McCall } 338433500955d731c73717af52088b7fc0e7a85681e7John McCall void VisitDependentTemplateSpecializationTypeLoc( 338533500955d731c73717af52088b7fc0e7a85681e7John McCall DependentTemplateSpecializationTypeLoc TL) { 338666581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara assert(DS.getTypeSpecType() == TST_typename); 338766581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara TypeSourceInfo *TInfo = 0; 338866581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 338966581d41527628d4b37f7b05c288f77be7415d7dAbramo Bagnara assert(TInfo); 339039e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie TL.copy( 339139e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie TInfo->getTypeLoc().castAs<DependentTemplateSpecializationTypeLoc>()); 33920daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara } 33930daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara void VisitTagTypeLoc(TagTypeLoc TL) { 33940daaf32723ac78549c507c2a68a5300502703673Abramo Bagnara TL.setNameLoc(DS.getTypeSpecTypeNameLoc()); 3395e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara } 3396b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman void VisitAtomicTypeLoc(AtomicTypeLoc TL) { 33974cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // An AtomicTypeLoc can come from either an _Atomic(...) type specifier 33984cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // or an _Atomic qualifier. 33994cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith if (DS.getTypeSpecType() == DeclSpec::TST_atomic) { 34004cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith TL.setKWLoc(DS.getTypeSpecTypeLoc()); 34014cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith TL.setParensRange(DS.getTypeofParensRange()); 340291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 34034cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith TypeSourceInfo *TInfo = 0; 34044cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith Sema::GetTypeFromParser(DS.getRepAsType(), &TInfo); 34054cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith assert(TInfo); 34064cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith TL.getValueLoc().initializeFullCopy(TInfo->getTypeLoc()); 34074cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith } else { 34084cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith TL.setKWLoc(DS.getAtomicSpecLoc()); 34094cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // No parens, to indicate this was spelled as an _Atomic qualifier. 34104cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith TL.setParensRange(SourceRange()); 34114cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith Visit(TL.getValueLoc()); 34124cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith } 3413b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman } 3414e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara 341551bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitTypeLoc(TypeLoc TL) { 341651bd803fbdade51d674598ed45da3d54190a656cJohn McCall // FIXME: add other typespec types and change this to an assert. 3417c21c7e9c2cded68f91be15be6847c9649242dc17Douglas Gregor TL.initialize(Context, DS.getTypeSpecTypeLoc()); 341851bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 341951bd803fbdade51d674598ed45da3d54190a656cJohn McCall }; 3420eb66759e9a1d7c041354d132a14674b2d948059bArgyrios Kyrtzidis 342151bd803fbdade51d674598ed45da3d54190a656cJohn McCall class DeclaratorLocFiller : public TypeLocVisitor<DeclaratorLocFiller> { 3422b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara ASTContext &Context; 342351bd803fbdade51d674598ed45da3d54190a656cJohn McCall const DeclaratorChunk &Chunk; 3424f352bddf015e537350416c296dd2963524f554f9Argyrios Kyrtzidis 342551bd803fbdade51d674598ed45da3d54190a656cJohn McCall public: 3426b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara DeclaratorLocFiller(ASTContext &Context, const DeclaratorChunk &Chunk) 3427b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara : Context(Context), Chunk(Chunk) {} 34284adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis 342951bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitQualifiedTypeLoc(QualifiedTypeLoc TL) { 34309f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("qualified type locs not expected here!"); 343151bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 34324adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis 3433f85e193739c953358c865005855253af4f68a497John McCall void VisitAttributedTypeLoc(AttributedTypeLoc TL) { 3434f85e193739c953358c865005855253af4f68a497John McCall fillAttributedTypeLoc(TL, Chunk.getAttrs()); 3435f85e193739c953358c865005855253af4f68a497John McCall } 343651bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) { 343751bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::BlockPointer); 343851bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setCaretLoc(Chunk.Loc); 34394adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 344051bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitPointerTypeLoc(PointerTypeLoc TL) { 344151bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Pointer); 344251bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setStarLoc(Chunk.Loc); 34434adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 344451bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) { 344551bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Pointer); 344651bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setStarLoc(Chunk.Loc); 34474adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 344851bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) { 344951bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::MemberPointer); 3450b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara const CXXScopeSpec& SS = Chunk.Mem.Scope(); 3451b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara NestedNameSpecifierLoc NNSLoc = SS.getWithLocInContext(Context); 3452b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara 3453b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara const Type* ClsTy = TL.getClass(); 3454b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara QualType ClsQT = QualType(ClsTy, 0); 3455b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara TypeSourceInfo *ClsTInfo = Context.CreateTypeSourceInfo(ClsQT, 0); 3456b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara // Now copy source location info into the type loc component. 3457b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara TypeLoc ClsTL = ClsTInfo->getTypeLoc(); 3458b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara switch (NNSLoc.getNestedNameSpecifier()->getKind()) { 3459b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::Identifier: 3460b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara assert(isa<DependentNameType>(ClsTy) && "Unexpected TypeLoc"); 3461b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara { 346239e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie DependentNameTypeLoc DNTLoc = ClsTL.castAs<DependentNameTypeLoc>(); 346338a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara DNTLoc.setElaboratedKeywordLoc(SourceLocation()); 3464b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara DNTLoc.setQualifierLoc(NNSLoc.getPrefix()); 3465b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara DNTLoc.setNameLoc(NNSLoc.getLocalBeginLoc()); 3466b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara } 3467b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara break; 3468b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara 3469b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::TypeSpec: 3470b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::TypeSpecWithTemplate: 3471b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara if (isa<ElaboratedType>(ClsTy)) { 347239e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie ElaboratedTypeLoc ETLoc = ClsTL.castAs<ElaboratedTypeLoc>(); 347338a42916cb07fd368d9e2ae1e7915fa896f9ec06Abramo Bagnara ETLoc.setElaboratedKeywordLoc(SourceLocation()); 3474b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara ETLoc.setQualifierLoc(NNSLoc.getPrefix()); 3475b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara TypeLoc NamedTL = ETLoc.getNamedTypeLoc(); 3476b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara NamedTL.initializeFullCopy(NNSLoc.getTypeLoc()); 3477b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara } else { 3478b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara ClsTL.initializeFullCopy(NNSLoc.getTypeLoc()); 3479b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara } 3480b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara break; 3481b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara 3482b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::Namespace: 3483b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::NamespaceAlias: 3484b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara case NestedNameSpecifier::Global: 3485b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara llvm_unreachable("Nested-name-specifier must name a type"); 3486b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara } 3487b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara 3488b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara // Finally fill in MemberPointerLocInfo fields. 348951bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setStarLoc(Chunk.Loc); 3490b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara TL.setClassTInfo(ClsTInfo); 34914adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 349251bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) { 349351bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Reference); 349454e14c4db764c0636160d26c5bbf491637c83a76John McCall // 'Amp' is misleading: this might have been originally 349554e14c4db764c0636160d26c5bbf491637c83a76John McCall /// spelled with AmpAmp. 349651bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setAmpLoc(Chunk.Loc); 349751bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 349851bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) { 349951bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Reference); 350051bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(!Chunk.Ref.LValueRef); 350151bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setAmpAmpLoc(Chunk.Loc); 350251bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 350351bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitArrayTypeLoc(ArrayTypeLoc TL) { 350451bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Array); 350551bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setLBracketLoc(Chunk.Loc); 350651bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setRBracketLoc(Chunk.EndLoc); 350751bd803fbdade51d674598ed45da3d54190a656cJohn McCall TL.setSizeExpr(static_cast<Expr*>(Chunk.Arr.NumElts)); 350851bd803fbdade51d674598ed45da3d54190a656cJohn McCall } 350951bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitFunctionTypeLoc(FunctionTypeLoc TL) { 351051bd803fbdade51d674598ed45da3d54190a656cJohn McCall assert(Chunk.Kind == DeclaratorChunk::Function); 3511796aa443ab5ed036f42ef33fed629e1b4b34871bAbramo Bagnara TL.setLocalRangeBegin(Chunk.Loc); 3512796aa443ab5ed036f42ef33fed629e1b4b34871bAbramo Bagnara TL.setLocalRangeEnd(Chunk.EndLoc); 351351bd803fbdade51d674598ed45da3d54190a656cJohn McCall 351451bd803fbdade51d674598ed45da3d54190a656cJohn McCall const DeclaratorChunk::FunctionTypeInfo &FTI = Chunk.Fun; 351559c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara TL.setLParenLoc(FTI.getLParenLoc()); 351659c0a818a79be850f7ae8fdafd57a1710e5b809aAbramo Bagnara TL.setRParenLoc(FTI.getRParenLoc()); 351754e14c4db764c0636160d26c5bbf491637c83a76John McCall for (unsigned i = 0, e = TL.getNumArgs(), tpi = 0; i != e; ++i) { 3518d226f65006733ed7f709c3174f22ce33391cb58fJohn McCall ParmVarDecl *Param = cast<ParmVarDecl>(FTI.ArgInfo[i].Param); 351954e14c4db764c0636160d26c5bbf491637c83a76John McCall TL.setArg(tpi++, Param); 35204adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 352151bd803fbdade51d674598ed45da3d54190a656cJohn McCall // FIXME: exception specs 35224adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 3523075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara void VisitParenTypeLoc(ParenTypeLoc TL) { 3524075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara assert(Chunk.Kind == DeclaratorChunk::Paren); 3525075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara TL.setLParenLoc(Chunk.Loc); 3526075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara TL.setRParenLoc(Chunk.EndLoc); 3527075f8f1b6bed4d1b224c74f87508534cc6392ce6Abramo Bagnara } 35281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 352951bd803fbdade51d674598ed45da3d54190a656cJohn McCall void VisitTypeLoc(TypeLoc TL) { 35309f61aa9e280adea9fbf3365f0e4f6ed568c9885aJeffrey Yasskin llvm_unreachable("unsupported TypeLoc kind in declarator!"); 35314adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 353251bd803fbdade51d674598ed45da3d54190a656cJohn McCall }; 353351bd803fbdade51d674598ed45da3d54190a656cJohn McCall} 35344adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis 35354cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smithstatic void fillAtomicQualLoc(AtomicTypeLoc ATL, const DeclaratorChunk &Chunk) { 35364cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith SourceLocation Loc; 35374cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith switch (Chunk.Kind) { 35384cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith case DeclaratorChunk::Function: 35394cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith case DeclaratorChunk::Array: 35404cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith case DeclaratorChunk::Paren: 35414cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith llvm_unreachable("cannot be _Atomic qualified"); 35424cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 35434cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith case DeclaratorChunk::Pointer: 35444cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith Loc = SourceLocation::getFromRawEncoding(Chunk.Ptr.AtomicQualLoc); 35454cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith break; 35464cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 35474cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith case DeclaratorChunk::BlockPointer: 35484cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith case DeclaratorChunk::Reference: 35494cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith case DeclaratorChunk::MemberPointer: 35504cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // FIXME: Provide a source location for the _Atomic keyword. 35514cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith break; 35524cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith } 35534cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 35544cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith ATL.setKWLoc(Loc); 35554cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith ATL.setParensRange(SourceRange()); 35564cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith} 35574cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 3558a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall/// \brief Create and instantiate a TypeSourceInfo with type source information. 355951bd803fbdade51d674598ed45da3d54190a656cJohn McCall/// 356051bd803fbdade51d674598ed45da3d54190a656cJohn McCall/// \param T QualType referring to the type as written in source code. 356105baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// 356205baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// \param ReturnTypeInfo For declarators whose return type does not show 356305baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// up in the normal place in the declaration specifiers (such as a C++ 356405baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// conversion function), this pointer will refer to a type source information 356505baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor/// for that return type. 3566a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCallTypeSourceInfo * 356705baacbfd67017b2724f3e0503fd23609f5d32bcDouglas GregorSema::GetTypeSourceInfoForDeclarator(Declarator &D, QualType T, 356805baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor TypeSourceInfo *ReturnTypeInfo) { 3569a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall TypeSourceInfo *TInfo = Context.CreateTypeSourceInfo(T); 3570a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall UnqualTypeLoc CurrTL = TInfo->getTypeLoc().getUnqualifiedLoc(); 357151bd803fbdade51d674598ed45da3d54190a656cJohn McCall 3572a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor // Handle parameter packs whose type is a pack expansion. 3573a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor if (isa<PackExpansionType>(T)) { 357439e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie CurrTL.castAs<PackExpansionTypeLoc>().setEllipsisLoc(D.getEllipsisLoc()); 357591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier CurrTL = CurrTL.getNextTypeLoc().getUnqualifiedLoc(); 3576a8bc8c9e9ba5bffebde00340786fe8542469c435Douglas Gregor } 357791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 35788ce35b095e8fca45e04c1bda14ed0548ce7536adSebastian Redl for (unsigned i = 0, e = D.getNumTypeObjects(); i != e; ++i) { 35794cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // An AtomicTypeLoc might be produced by an atomic qualifier in this 35804cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith // declarator chunk. 35814cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith if (AtomicTypeLoc ATL = CurrTL.getAs<AtomicTypeLoc>()) { 35824cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith fillAtomicQualLoc(ATL, D.getTypeObject(i)); 35834cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith CurrTL = ATL.getValueLoc().getUnqualifiedLoc(); 35844cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith } 35854cf4a5e96ab0babd13774b17112e7c1d83042ea7Richard Smith 358639e6ab4be93d9c5e729a578ddd9d415cd2d49872David Blaikie while (AttributedTypeLoc TL = CurrTL.getAs<AttributedTypeLoc>()) { 358714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall fillAttributedTypeLoc(TL, D.getTypeObject(i).getAttrs()); 358814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall CurrTL = TL.getNextTypeLoc().getUnqualifiedLoc(); 358914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall } 359014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 3591b6ab6c1ca733fda2302a1c5066bdfc6218c89e41Abramo Bagnara DeclaratorLocFiller(Context, D.getTypeObject(i)).Visit(CurrTL); 359251bd803fbdade51d674598ed45da3d54190a656cJohn McCall CurrTL = CurrTL.getNextTypeLoc().getUnqualifiedLoc(); 35934adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis } 359491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 3595b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall // If we have different source information for the return type, use 3596b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall // that. This really only applies to C++ conversion functions. 3597b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall if (ReturnTypeInfo) { 359805baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor TypeLoc TL = ReturnTypeInfo->getTypeLoc(); 359905baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor assert(TL.getFullDataSize() == CurrTL.getFullDataSize()); 360005baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor memcpy(CurrTL.getOpaqueData(), TL.getOpaqueData(), TL.getFullDataSize()); 3601b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall } else { 3602c21c7e9c2cded68f91be15be6847c9649242dc17Douglas Gregor TypeSpecLocFiller(Context, D.getDeclSpec()).Visit(CurrTL); 360305baacbfd67017b2724f3e0503fd23609f5d32bcDouglas Gregor } 360491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 3605a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall return TInfo; 36064adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis} 36074adab7fcb4cb1e23622f4849f7ef7981ff169616Argyrios Kyrtzidis 3608a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall/// \brief Create a LocInfoType to hold the given QualType and TypeSourceInfo. 3609b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCallParsedType Sema::CreateParsedType(QualType T, TypeSourceInfo *TInfo) { 36101bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis // FIXME: LocInfoTypes are "transient", only needed for passing to/from Parser 36111bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis // and Sema during declaration parsing. Try deallocating/caching them when 36121bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis // it's appropriate, instead of allocating them and keeping them around. 361391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier LocInfoType *LocT = (LocInfoType*)BumpAlloc.Allocate(sizeof(LocInfoType), 3614eb0eb49ce5f5294902769702b9322e42e89e972eDouglas Gregor TypeAlignment); 3615a93c934af4fbf97cbe8e649d82e68ccacfe57c95John McCall new (LocT) LocInfoType(T, TInfo); 36161bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis assert(LocT->getTypeClass() != T->getTypeClass() && 36171bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis "LocInfoType's TypeClass conflicts with an existing Type class"); 3618b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall return ParsedType::make(QualType(LocT, 0)); 36191bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis} 36201bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis 36211bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidisvoid LocInfoType::getAsStringInternal(std::string &Str, 36221bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis const PrintingPolicy &Policy) const { 3623b219cfc4d75f0a03630b7c4509ef791b7e97b2c8David Blaikie llvm_unreachable("LocInfoType leaked into the type system; an opaque TypeTy*" 362435d44e5673e772d1cc7eab66818de8d9796b89caArgyrios Kyrtzidis " was used directly instead of getting the QualType through" 362535d44e5673e772d1cc7eab66818de8d9796b89caArgyrios Kyrtzidis " GetTypeFromParser"); 36261bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis} 36271bb8a45f7386a23871598d05141a07af03067925Argyrios Kyrtzidis 3628f312b1ea179f1c44371f9ee0cd0bc006f612de11John McCallTypeResult Sema::ActOnTypeName(Scope *S, Declarator &D) { 36295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // C99 6.7.6: Type names have no identifier. This is already validated by 36305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer // the parser. 36315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer assert(D.getIdentifier() == 0 && "Type name should have no identifier!"); 36321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3633d3880f8458bb6a03818ee01f758c32f945de3eaaArgyrios Kyrtzidis TypeSourceInfo *TInfo = GetTypeForDeclarator(D, S); 3634bf1a028246d884a540aeafa38e89be59a269b072John McCall QualType T = TInfo->getType(); 36355153ee66d6d4fb37b02f85df38e48dc8b46660dfChris Lattner if (D.isInvalidType()) 3636809070a886684cb5b92eb0e00a6581ab1fa6b17aDouglas Gregor return true; 36375912a3544e438a92832b8c52c13f48d4f54795dcSteve Naroff 3638e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall // Make sure there are no unused decl attributes on the declarator. 3639cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall // We don't want to do this for ObjC parameters because we're going 3640cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall // to apply them to the actual parameter declaration. 36416b3d3e54c003b03f16e235ad2ff49e95587bbf92Richard Smith // Likewise, we don't want to do this for alias declarations, because 36426b3d3e54c003b03f16e235ad2ff49e95587bbf92Richard Smith // we are actually going to build a declaration from this eventually. 36436b3d3e54c003b03f16e235ad2ff49e95587bbf92Richard Smith if (D.getContext() != Declarator::ObjCParameterContext && 36446b3d3e54c003b03f16e235ad2ff49e95587bbf92Richard Smith D.getContext() != Declarator::AliasDeclContext && 36456b3d3e54c003b03f16e235ad2ff49e95587bbf92Richard Smith D.getContext() != Declarator::AliasTemplateContext) 3646cdda47faab5c2c61c239491a1a091e071ed3e38eJohn McCall checkUnusedDeclAttributes(D); 3647e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall 36484e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (getLangOpts().CPlusPlus) { 3649402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor // Check that there are no default arguments (C++ only). 36506d6eb57225b53fb627c565861d1d0e90645400d1Douglas Gregor CheckExtraCXXDefaultArguments(D); 3651402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor } 3652402abb55fc2e0cdda5fb1ac90009b1f5f6774906Douglas Gregor 3653b3d8748e797c6c2f1dc01186c8eeb3b1b5fe970cJohn McCall return CreateParsedType(T, TInfo); 36545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer} 36555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer 3656e97179c675b341927807c718be215c8d1aab8acbDouglas GregorParsedType Sema::ActOnObjCInstanceType(SourceLocation Loc) { 3657e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor QualType T = Context.getObjCInstanceType(); 3658e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor TypeSourceInfo *TInfo = Context.getTrivialTypeSourceInfo(T, Loc); 3659e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor return CreateParsedType(T, TInfo); 3660e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor} 3661e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor 3662e97179c675b341927807c718be215c8d1aab8acbDouglas Gregor 3663c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner//===----------------------------------------------------------------------===// 3664c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner// Type Attribute Processing 3665c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner//===----------------------------------------------------------------------===// 3666232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner 3667232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner/// HandleAddressSpaceTypeAttribute - Process an address_space attribute on the 3668c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner/// specified type. The attribute contains 1 argument, the id of the address 3669c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner/// space for the type. 36701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpstatic void HandleAddressSpaceTypeAttribute(QualType &Type, 3671c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner const AttributeList &Attr, Sema &S){ 36720953e767ff7817f97b3ab20896b229891eeff45bJohn McCall 3673232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner // If this type is already address space qualified, reject it. 367429e3ef8df84da298e7553a84276af4909ff6e9ebPeter Collingbourne // ISO/IEC TR 18037 S5.3 (amending C99 6.7.3): "No type shall be qualified by 367529e3ef8df84da298e7553a84276af4909ff6e9ebPeter Collingbourne // qualifiers for two or more different address spaces." 3676232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner if (Type.getAddressSpace()) { 3677c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_address_multiple_qualifiers); 3678e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 3679c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner return; 3680232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner } 36811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3682020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne // ISO/IEC TR 18037 S5.3 (amending C99 6.7.3): "A function type shall not be 3683020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne // qualified by an address-space qualifier." 3684020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne if (Type->isFunctionType()) { 3685020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne S.Diag(Attr.getLoc(), diag::err_attribute_address_function_type); 3686020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne Attr.setInvalid(); 3687020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne return; 3688020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne } 3689020972d5d6dc1f3c49839cfbadcccf4cbefb2f4dPeter Collingbourne 3690232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner // Check the attribute arguments. 3691545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner if (Attr.getNumArgs() != 1) { 3692f3a41af4d5c98a72a1d6720bbbfd658e57ef2541Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 3693e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 3694c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner return; 3695232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner } 3696545dd3401e7f31c256d69cb948a45d5ca781064cChris Lattner Expr *ASArgExpr = static_cast<Expr *>(Attr.getArg(0)); 3697232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner llvm::APSInt addrSpace(32); 3698ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (ASArgExpr->isTypeDependent() || ASArgExpr->isValueDependent() || 3699ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !ASArgExpr->isIntegerConstantExpr(addrSpace, S.Context)) { 3700dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner S.Diag(Attr.getLoc(), diag::err_attribute_address_space_not_int) 3701dcd5ef12488e4c7ea844327835896ca86b609a97Chris Lattner << ASArgExpr->getSourceRange(); 3702e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 3703c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner return; 3704232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner } 3705232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner 3706efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall // Bounds checking. 3707efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall if (addrSpace.isSigned()) { 3708efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall if (addrSpace.isNegative()) { 3709efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall S.Diag(Attr.getLoc(), diag::err_attribute_address_space_negative) 3710efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall << ASArgExpr->getSourceRange(); 3711e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 3712efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall return; 3713efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall } 3714efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall addrSpace.setIsSigned(false); 3715efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall } 3716efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall llvm::APSInt max(addrSpace.getBitWidth()); 37170953e767ff7817f97b3ab20896b229891eeff45bJohn McCall max = Qualifiers::MaxAddressSpace; 3718efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall if (addrSpace > max) { 3719efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall S.Diag(Attr.getLoc(), diag::err_attribute_address_space_too_high) 37200953e767ff7817f97b3ab20896b229891eeff45bJohn McCall << Qualifiers::MaxAddressSpace << ASArgExpr->getSourceRange(); 3721e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 3722efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall return; 3723efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall } 3724efadb7768e7c7418185f5a4010ecd8b21ca9731bJohn McCall 37251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump unsigned ASIdx = static_cast<unsigned>(addrSpace.getZExtValue()); 3726f11284ac87daa613bc7b30db9f54bd716d123222Fariborz Jahanian Type = S.Context.getAddrSpaceQualType(Type, ASIdx); 3727c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner} 3728c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner 3729d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall/// Does this type have a "direct" ownership qualifier? That is, 3730d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall/// is it written like "__strong id", as opposed to something like 3731d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall/// "typeof(foo)", where that happens to be strong? 3732d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCallstatic bool hasDirectOwnershipQualifier(QualType type) { 3733d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // Fast path: no qualifier at all. 3734d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall assert(type.getQualifiers().hasObjCLifetime()); 3735d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3736d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall while (true) { 3737d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // __strong id 3738d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (const AttributedType *attr = dyn_cast<AttributedType>(type)) { 3739d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (attr->getAttrKind() == AttributedType::attr_objc_ownership) 3740d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall return true; 3741d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3742d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall type = attr->getModifiedType(); 3743d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3744d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // X *__strong (...) 3745d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } else if (const ParenType *paren = dyn_cast<ParenType>(type)) { 3746d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall type = paren->getInnerType(); 374791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 3748d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // That's it for things we want to complain about. In particular, 3749d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // we do not want to look through typedefs, typeof(expr), 3750d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // typeof(type), or any other way that the type is somehow 3751d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // abstracted. 3752d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } else { 375391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 3754d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall return false; 3755d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 3756d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 3757d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall} 3758d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3759b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis/// handleObjCOwnershipTypeAttr - Process an objc_ownership 3760f85e193739c953358c865005855253af4f68a497John McCall/// attribute on the specified type. 3761f85e193739c953358c865005855253af4f68a497John McCall/// 3762f85e193739c953358c865005855253af4f68a497John McCall/// Returns 'true' if the attribute was handled. 3763b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidisstatic bool handleObjCOwnershipTypeAttr(TypeProcessingState &state, 3764f85e193739c953358c865005855253af4f68a497John McCall AttributeList &attr, 3765f85e193739c953358c865005855253af4f68a497John McCall QualType &type) { 3766e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis bool NonObjCPointer = false; 3767e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis 3768e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis if (!type->isDependentType()) { 3769e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis if (const PointerType *ptr = type->getAs<PointerType>()) { 3770e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis QualType pointee = ptr->getPointeeType(); 3771e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis if (pointee->isObjCRetainableType() || pointee->isPointerType()) 3772e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis return false; 3773e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis // It is important not to lose the source info that there was an attribute 3774e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis // applied to non-objc pointer. We will create an attributed type but 3775e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis // its type will be the same as the original type. 3776e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis NonObjCPointer = true; 3777e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } else if (!type->isObjCRetainableType()) { 3778e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis return false; 3779e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } 3780b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall 3781b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // Don't accept an ownership attribute in the declspec if it would 3782b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall // just be the return type of a block pointer. 3783b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall if (state.isProcessingDeclSpec()) { 3784b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall Declarator &D = state.getDeclarator(); 3785b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall if (maybeMovePastReturnType(D, D.getNumTypeObjects())) 3786b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall return false; 3787b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall } 3788e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } 3789f85e193739c953358c865005855253af4f68a497John McCall 3790f85e193739c953358c865005855253af4f68a497John McCall Sema &S = state.getSema(); 3791440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis SourceLocation AttrLoc = attr.getLoc(); 3792440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis if (AttrLoc.isMacroID()) 3793440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis AttrLoc = S.getSourceManager().getImmediateExpansionRange(AttrLoc).first; 3794f85e193739c953358c865005855253af4f68a497John McCall 3795f85e193739c953358c865005855253af4f68a497John McCall if (!attr.getParameterName()) { 3796440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis S.Diag(AttrLoc, diag::err_attribute_argument_n_not_string) 3797b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis << "objc_ownership" << 1; 3798f85e193739c953358c865005855253af4f68a497John McCall attr.setInvalid(); 3799f85e193739c953358c865005855253af4f68a497John McCall return true; 3800f85e193739c953358c865005855253af4f68a497John McCall } 3801f85e193739c953358c865005855253af4f68a497John McCall 3802d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // Consume lifetime attributes without further comment outside of 3803d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // ARC mode. 38044e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!S.getLangOpts().ObjCAutoRefCount) 3805d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall return true; 3806d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3807f85e193739c953358c865005855253af4f68a497John McCall Qualifiers::ObjCLifetime lifetime; 3808f85e193739c953358c865005855253af4f68a497John McCall if (attr.getParameterName()->isStr("none")) 3809f85e193739c953358c865005855253af4f68a497John McCall lifetime = Qualifiers::OCL_ExplicitNone; 3810f85e193739c953358c865005855253af4f68a497John McCall else if (attr.getParameterName()->isStr("strong")) 3811f85e193739c953358c865005855253af4f68a497John McCall lifetime = Qualifiers::OCL_Strong; 3812f85e193739c953358c865005855253af4f68a497John McCall else if (attr.getParameterName()->isStr("weak")) 3813f85e193739c953358c865005855253af4f68a497John McCall lifetime = Qualifiers::OCL_Weak; 3814f85e193739c953358c865005855253af4f68a497John McCall else if (attr.getParameterName()->isStr("autoreleasing")) 3815f85e193739c953358c865005855253af4f68a497John McCall lifetime = Qualifiers::OCL_Autoreleasing; 3816f85e193739c953358c865005855253af4f68a497John McCall else { 3817440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis S.Diag(AttrLoc, diag::warn_attribute_type_not_supported) 3818b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis << "objc_ownership" << attr.getParameterName(); 3819f85e193739c953358c865005855253af4f68a497John McCall attr.setInvalid(); 3820f85e193739c953358c865005855253af4f68a497John McCall return true; 3821f85e193739c953358c865005855253af4f68a497John McCall } 3822f85e193739c953358c865005855253af4f68a497John McCall 3823d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall SplitQualType underlyingType = type.split(); 3824d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3825d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // Check for redundant/conflicting ownership qualifiers. 3826d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (Qualifiers::ObjCLifetime previousLifetime 3827d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall = type.getQualifiers().getObjCLifetime()) { 3828d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // If it's written directly, that's an error. 3829d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (hasDirectOwnershipQualifier(type)) { 3830d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall S.Diag(AttrLoc, diag::err_attr_objc_ownership_redundant) 3831d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall << type; 3832d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall return true; 3833d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 3834d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3835d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // Otherwise, if the qualifiers actually conflict, pull sugar off 3836d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // until we reach a type that is directly qualified. 3837d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall if (previousLifetime != lifetime) { 3838d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // This should always terminate: the canonical type is 3839d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall // qualified, so some bit of sugar must be hiding it. 3840d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall while (!underlyingType.Quals.hasObjCLifetime()) { 3841d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall underlyingType = underlyingType.getSingleStepDesugaredType(); 3842d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 3843d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall underlyingType.Quals.removeObjCLifetime(); 3844d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 3845d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall } 3846d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall 3847d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall underlyingType.Quals.addObjCLifetime(lifetime); 3848f85e193739c953358c865005855253af4f68a497John McCall 3849e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis if (NonObjCPointer) { 3850e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis StringRef name = attr.getName()->getName(); 3851e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis switch (lifetime) { 3852e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_None: 3853e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_ExplicitNone: 3854e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis break; 3855e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_Strong: name = "__strong"; break; 3856e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_Weak: name = "__weak"; break; 3857e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis case Qualifiers::OCL_Autoreleasing: name = "__autoreleasing"; break; 3858e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } 3859e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis S.Diag(AttrLoc, diag::warn_objc_object_attribute_wrong_type) 3860e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis << name << type; 3861e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis } 3862e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis 3863f85e193739c953358c865005855253af4f68a497John McCall QualType origType = type; 3864e71202efccdead44c8a3d4a2296d866d0e89799bArgyrios Kyrtzidis if (!NonObjCPointer) 3865d85bf9dd23920f5400bb8d6a41c8ebb1aecfdee9John McCall type = S.Context.getQualifiedType(underlyingType); 3866f85e193739c953358c865005855253af4f68a497John McCall 3867f85e193739c953358c865005855253af4f68a497John McCall // If we have a valid source location for the attribute, use an 3868f85e193739c953358c865005855253af4f68a497John McCall // AttributedType instead. 3869440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis if (AttrLoc.isValid()) 3870b8b0313e84700b5c6d597b3be4de41c97b7550f1Argyrios Kyrtzidis type = S.Context.getAttributedType(AttributedType::attr_objc_ownership, 3871f85e193739c953358c865005855253af4f68a497John McCall origType, type); 3872f85e193739c953358c865005855253af4f68a497John McCall 38739f084a3166b684573ba49df28fc5792bc37d92e1John McCall // Forbid __weak if the runtime doesn't support it. 3874f85e193739c953358c865005855253af4f68a497John McCall if (lifetime == Qualifiers::OCL_Weak && 38750a7dd788dbef975f35f273c7ab913f480f7edd60John McCall !S.getLangOpts().ObjCARCWeak && !NonObjCPointer) { 3876f85e193739c953358c865005855253af4f68a497John McCall 3877f85e193739c953358c865005855253af4f68a497John McCall // Actually, delay this until we know what we're parsing. 3878f85e193739c953358c865005855253af4f68a497John McCall if (S.DelayedDiagnostics.shouldDelayDiagnostics()) { 3879f85e193739c953358c865005855253af4f68a497John McCall S.DelayedDiagnostics.add( 3880440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis sema::DelayedDiagnostic::makeForbiddenType( 3881440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis S.getSourceManager().getExpansionLoc(AttrLoc), 3882f85e193739c953358c865005855253af4f68a497John McCall diag::err_arc_weak_no_runtime, type, /*ignored*/ 0)); 3883f85e193739c953358c865005855253af4f68a497John McCall } else { 3884440ec2ebbe2e7aa2a5f733a41cf845d354d16e23Argyrios Kyrtzidis S.Diag(AttrLoc, diag::err_arc_weak_no_runtime); 3885f85e193739c953358c865005855253af4f68a497John McCall } 3886f85e193739c953358c865005855253af4f68a497John McCall 3887f85e193739c953358c865005855253af4f68a497John McCall attr.setInvalid(); 3888f85e193739c953358c865005855253af4f68a497John McCall return true; 3889f85e193739c953358c865005855253af4f68a497John McCall } 389091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 389191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // Forbid __weak for class objects marked as 3892742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian // objc_arc_weak_reference_unavailable 3893742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian if (lifetime == Qualifiers::OCL_Weak) { 3894b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall if (const ObjCObjectPointerType *ObjT = 3895b2381b1c91ac5dc2407e98f36e3a6ba93d771791John McCall type->getAs<ObjCObjectPointerType>()) { 38964e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith if (ObjCInterfaceDecl *Class = ObjT->getInterfaceDecl()) { 38974e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith if (Class->isArcWeakrefUnavailable()) { 38984e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith S.Diag(AttrLoc, diag::err_arc_unsupported_weak_class); 38994e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith S.Diag(ObjT->getInterfaceDecl()->getLocation(), 39004e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith diag::note_class_declared); 39014e90bc39f052ea0046d40aebbb42732ad1f21f50Richard Smith } 3902742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian } 3903742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian } 3904742352a3984aeef9ecf911be23e673e97b34595fFariborz Jahanian } 390591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 3906f85e193739c953358c865005855253af4f68a497John McCall return true; 3907f85e193739c953358c865005855253af4f68a497John McCall} 3908f85e193739c953358c865005855253af4f68a497John McCall 3909711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// handleObjCGCTypeAttr - Process the __attribute__((objc_gc)) type 3910711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// attribute on the specified type. Returns true to indicate that 3911711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// the attribute was handled, false to indicate that the type does 3912711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// not permit the attribute. 3913711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleObjCGCTypeAttr(TypeProcessingState &state, 3914711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 3915711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &type) { 3916711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Sema &S = state.getSema(); 3917711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 3918711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Delay if this isn't some kind of pointer. 3919711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!type->isPointerType() && 3920711c52bb20d0c69063b52a99826fb7d2835501f1John McCall !type->isObjCObjectPointerType() && 3921711c52bb20d0c69063b52a99826fb7d2835501f1John McCall !type->isBlockPointerType()) 3922711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return false; 3923711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 3924711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (type.getObjCGCAttr() != Qualifiers::GCNone) { 3925711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::err_attribute_multiple_objc_gc); 3926711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 3927711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3928d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian } 39291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3930d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian // Check the attribute arguments. 3931711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!attr.getParameterName()) { 3932711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::err_attribute_argument_n_not_string) 3933ba372b85524f712e5b97a176f6ce0197d365835dFariborz Jahanian << "objc_gc" << 1; 3934711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 3935711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3936ba372b85524f712e5b97a176f6ce0197d365835dFariborz Jahanian } 39370953e767ff7817f97b3ab20896b229891eeff45bJohn McCall Qualifiers::GC GCAttr; 3938711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (attr.getNumArgs() != 0) { 3939711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 3940711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 3941711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3942d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian } 3943711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (attr.getParameterName()->isStr("weak")) 39440953e767ff7817f97b3ab20896b229891eeff45bJohn McCall GCAttr = Qualifiers::Weak; 3945711c52bb20d0c69063b52a99826fb7d2835501f1John McCall else if (attr.getParameterName()->isStr("strong")) 39460953e767ff7817f97b3ab20896b229891eeff45bJohn McCall GCAttr = Qualifiers::Strong; 3947d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian else { 3948711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::warn_attribute_type_not_supported) 3949711c52bb20d0c69063b52a99826fb7d2835501f1John McCall << "objc_gc" << attr.getParameterName(); 3950711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 3951711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3952d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian } 39531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 395414aa2175416f79ef17811282afbf425f87d54ebfJohn McCall QualType origType = type; 395514aa2175416f79ef17811282afbf425f87d54ebfJohn McCall type = S.Context.getObjCGCQualType(origType, GCAttr); 395614aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 395714aa2175416f79ef17811282afbf425f87d54ebfJohn McCall // Make an attributed type to preserve the source information. 395814aa2175416f79ef17811282afbf425f87d54ebfJohn McCall if (attr.getLoc().isValid()) 395914aa2175416f79ef17811282afbf425f87d54ebfJohn McCall type = S.Context.getAttributedType(AttributedType::attr_objc_gc, 396014aa2175416f79ef17811282afbf425f87d54ebfJohn McCall origType, type); 396114aa2175416f79ef17811282afbf425f87d54ebfJohn McCall 3962711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 3963d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian} 3964d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian 3965e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCallnamespace { 3966e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// A helper class to unwrap a type down to a function for the 3967e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// purposes of applying attributes there. 3968e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// 3969e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// Use: 3970e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// FunctionTypeUnwrapper unwrapped(SemaRef, T); 3971e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// if (unwrapped.isFunctionType()) { 3972e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// const FunctionType *fn = unwrapped.get(); 3973e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// // change fn somehow 3974e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// T = unwrapped.wrap(fn); 3975e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall /// } 3976e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall struct FunctionTypeUnwrapper { 3977e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall enum WrapKind { 3978e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Desugar, 3979e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Parens, 3980e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Pointer, 3981e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall BlockPointer, 3982e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Reference, 3983e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall MemberPointer 3984e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall }; 3985e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3986e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType Original; 3987e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall const FunctionType *Fn; 39885f9e272e632e951b1efe824cd16acb4d96077930Chris Lattner SmallVector<unsigned char /*WrapKind*/, 8> Stack; 3989e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 3990e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall FunctionTypeUnwrapper(Sema &S, QualType T) : Original(T) { 3991e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall while (true) { 3992e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall const Type *Ty = T.getTypePtr(); 3993e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall if (isa<FunctionType>(Ty)) { 3994e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Fn = cast<FunctionType>(Ty); 3995e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return; 3996e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } else if (isa<ParenType>(Ty)) { 3997e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall T = cast<ParenType>(Ty)->getInnerType(); 3998e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Stack.push_back(Parens); 3999e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } else if (isa<PointerType>(Ty)) { 4000e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall T = cast<PointerType>(Ty)->getPointeeType(); 4001e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Stack.push_back(Pointer); 4002e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } else if (isa<BlockPointerType>(Ty)) { 4003e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall T = cast<BlockPointerType>(Ty)->getPointeeType(); 4004e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Stack.push_back(BlockPointer); 4005e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } else if (isa<MemberPointerType>(Ty)) { 4006e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall T = cast<MemberPointerType>(Ty)->getPointeeType(); 4007e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Stack.push_back(MemberPointer); 4008e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } else if (isa<ReferenceType>(Ty)) { 4009e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall T = cast<ReferenceType>(Ty)->getPointeeType(); 4010e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Stack.push_back(Reference); 4011e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } else { 4012e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall const Type *DTy = Ty->getUnqualifiedDesugaredType(); 4013e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall if (Ty == DTy) { 4014e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Fn = 0; 4015e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return; 4016e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 4017e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4018e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall T = QualType(DTy, 0); 4019e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Stack.push_back(Desugar); 4020e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 4021e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 4022e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 4023e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4024e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall bool isFunctionType() const { return (Fn != 0); } 4025e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall const FunctionType *get() const { return Fn; } 4026e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4027e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType wrap(Sema &S, const FunctionType *New) { 4028e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // If T wasn't modified from the unwrapped type, do nothing. 4029e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall if (New == get()) return Original; 4030e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4031e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall Fn = New; 4032e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return wrap(S.Context, Original, 0); 4033e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 4034e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4035e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall private: 4036e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType wrap(ASTContext &C, QualType Old, unsigned I) { 4037e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall if (I == Stack.size()) 4038e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return C.getQualifiedType(Fn, Old.getQualifiers()); 4039e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4040e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // Build up the inner type, applying the qualifiers from the old 4041e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // type to the new type. 4042e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall SplitQualType SplitOld = Old.split(); 4043e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4044e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // As a special case, tail-recurse if there are no qualifiers. 4045200fa53fd420aa8369586f569dbece04930ad6a3John McCall if (SplitOld.Quals.empty()) 4046200fa53fd420aa8369586f569dbece04930ad6a3John McCall return wrap(C, SplitOld.Ty, I); 4047200fa53fd420aa8369586f569dbece04930ad6a3John McCall return C.getQualifiedType(wrap(C, SplitOld.Ty, I), SplitOld.Quals); 4048e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 4049e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4050e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType wrap(ASTContext &C, const Type *Old, unsigned I) { 4051e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall if (I == Stack.size()) return QualType(Fn, 0); 4052e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4053e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall switch (static_cast<WrapKind>(Stack[I++])) { 4054e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall case Desugar: 4055e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // This is the point at which we potentially lose source 4056e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // information. 4057e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return wrap(C, Old->getUnqualifiedDesugaredType(), I); 4058e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4059e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall case Parens: { 4060e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType New = wrap(C, cast<ParenType>(Old)->getInnerType(), I); 4061e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return C.getParenType(New); 4062e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 4063e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4064e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall case Pointer: { 4065e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType New = wrap(C, cast<PointerType>(Old)->getPointeeType(), I); 4066e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return C.getPointerType(New); 4067e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 4068e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4069e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall case BlockPointer: { 4070e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType New = wrap(C, cast<BlockPointerType>(Old)->getPointeeType(),I); 4071e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return C.getBlockPointerType(New); 4072e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 4073e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4074e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall case MemberPointer: { 4075e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall const MemberPointerType *OldMPT = cast<MemberPointerType>(Old); 4076e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType New = wrap(C, OldMPT->getPointeeType(), I); 4077e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return C.getMemberPointerType(New, OldMPT->getClass()); 4078e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 4079e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4080e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall case Reference: { 4081e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall const ReferenceType *OldRef = cast<ReferenceType>(Old); 4082e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall QualType New = wrap(C, OldRef->getPointeeType(), I); 4083e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall if (isa<LValueReferenceType>(OldRef)) 4084e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return C.getLValueReferenceType(New, OldRef->isSpelledAsLValue()); 4085e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall else 4086e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall return C.getRValueReferenceType(New); 4087e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 4088e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 4089e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4090e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall llvm_unreachable("unknown wrapping kind"); 4091e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall } 4092e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall }; 4093e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall} 4094e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4095711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// Process an individual function attribute. Returns true to 4096711c52bb20d0c69063b52a99826fb7d2835501f1John McCall/// indicate that the attribute was handled, false if it wasn't. 4097711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic bool handleFunctionTypeAttr(TypeProcessingState &state, 4098711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr, 4099711c52bb20d0c69063b52a99826fb7d2835501f1John McCall QualType &type) { 4100711c52bb20d0c69063b52a99826fb7d2835501f1John McCall Sema &S = state.getSema(); 4101e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4102711c52bb20d0c69063b52a99826fb7d2835501f1John McCall FunctionTypeUnwrapper unwrapped(S, type); 41032455636163fdd18581d7fdae816433f886d88213Mike Stump 41048e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr.getKind() == AttributeList::AT_NoReturn) { 4105711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (S.CheckNoReturnAttr(attr)) 410604a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall return true; 4107e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall 4108e6a365d772a6b455f1e23ac9ae5f40d65a55a18cJohn McCall // Delay if this is not a function type. 4109711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!unwrapped.isFunctionType()) 4110711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return false; 4111425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola 4112425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola // Otherwise we can process right away. 4113711c52bb20d0c69063b52a99826fb7d2835501f1John McCall FunctionType::ExtInfo EI = unwrapped.get()->getExtInfo().withNoReturn(true); 4114711c52bb20d0c69063b52a99826fb7d2835501f1John McCall type = unwrapped.wrap(S, S.Context.adjustFunctionType(unwrapped.get(), EI)); 4115711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 4116711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } 4117425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola 4118f85e193739c953358c865005855253af4f68a497John McCall // ns_returns_retained is not always a type attribute, but if we got 4119f85e193739c953358c865005855253af4f68a497John McCall // here, we're treating it as one right now. 41208e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr.getKind() == AttributeList::AT_NSReturnsRetained) { 41214e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie assert(S.getLangOpts().ObjCAutoRefCount && 4122f85e193739c953358c865005855253af4f68a497John McCall "ns_returns_retained treated as type attribute in non-ARC"); 4123f85e193739c953358c865005855253af4f68a497John McCall if (attr.getNumArgs()) return true; 4124f85e193739c953358c865005855253af4f68a497John McCall 4125f85e193739c953358c865005855253af4f68a497John McCall // Delay if this is not a function type. 4126f85e193739c953358c865005855253af4f68a497John McCall if (!unwrapped.isFunctionType()) 4127f85e193739c953358c865005855253af4f68a497John McCall return false; 4128f85e193739c953358c865005855253af4f68a497John McCall 4129f85e193739c953358c865005855253af4f68a497John McCall FunctionType::ExtInfo EI 4130f85e193739c953358c865005855253af4f68a497John McCall = unwrapped.get()->getExtInfo().withProducesResult(true); 4131f85e193739c953358c865005855253af4f68a497John McCall type = unwrapped.wrap(S, S.Context.adjustFunctionType(unwrapped.get(), EI)); 4132f85e193739c953358c865005855253af4f68a497John McCall return true; 4133f85e193739c953358c865005855253af4f68a497John McCall } 4134f85e193739c953358c865005855253af4f68a497John McCall 41358e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt if (attr.getKind() == AttributeList::AT_Regparm) { 4136711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unsigned value; 4137711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (S.CheckRegparmAttr(attr, value)) 4138711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 41391e030eb1194763b42c1752723be23b1515f48981John McCall 4140711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Delay if this is not a function type. 4141711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!unwrapped.isFunctionType()) 4142008df5dce3938456ae7ea2e7ab3b2d12391ebf3eJohn McCall return false; 41431e030eb1194763b42c1752723be23b1515f48981John McCall 4144ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis // Diagnose regparm with fastcall. 4145ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis const FunctionType *fn = unwrapped.get(); 4146ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis CallingConv CC = fn->getCallConv(); 4147ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis if (CC == CC_X86FastCall) { 4148ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis S.Diag(attr.getLoc(), diag::err_attributes_are_not_compatible) 4149ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis << FunctionType::getNameForCallConv(CC) 4150ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis << "regparm"; 4151ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis attr.setInvalid(); 4152ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis return true; 4153ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis } 4154ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis 415591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier FunctionType::ExtInfo EI = 4156711c52bb20d0c69063b52a99826fb7d2835501f1John McCall unwrapped.get()->getExtInfo().withRegParm(value); 4157711c52bb20d0c69063b52a99826fb7d2835501f1John McCall type = unwrapped.wrap(S, S.Context.adjustFunctionType(unwrapped.get(), EI)); 4158711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 4159425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola } 4160425ef72306d4ff6b3698b744353e5f0e56b4b884Rafael Espindola 416182bfa19fe3be324b13fdbcda46304b52c500f0d4Aaron Ballman // Delay if the type didn't work out to a function. 416282bfa19fe3be324b13fdbcda46304b52c500f0d4Aaron Ballman if (!unwrapped.isFunctionType()) return false; 416382bfa19fe3be324b13fdbcda46304b52c500f0d4Aaron Ballman 416404a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall // Otherwise, a calling convention. 4165711c52bb20d0c69063b52a99826fb7d2835501f1John McCall CallingConv CC; 4166711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (S.CheckCallingConvAttr(attr, CC)) 4167711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 4168f82b4e85b1219295cad4b5851b035575bc293010John McCall 4169711c52bb20d0c69063b52a99826fb7d2835501f1John McCall const FunctionType *fn = unwrapped.get(); 4170711c52bb20d0c69063b52a99826fb7d2835501f1John McCall CallingConv CCOld = fn->getCallConv(); 4171064f7db69def9299f5f4d9a32114afc10b6a6420Charles Davis if (S.Context.getCanonicalCallConv(CC) == 4172e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara S.Context.getCanonicalCallConv(CCOld)) { 4173ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis FunctionType::ExtInfo EI= unwrapped.get()->getExtInfo().withCallingConv(CC); 4174ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis type = unwrapped.wrap(S, S.Context.adjustFunctionType(unwrapped.get(), EI)); 4175711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 4176e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara } 417704a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 41788e68f1c8a2919ea83c2053731d6011074f1062e1Roman Divacky if (CCOld != (S.LangOpts.MRTD ? CC_X86StdCall : CC_Default)) { 417904a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall // Should we diagnose reapplications of the same convention? 4180711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::err_attributes_are_not_compatible) 418104a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall << FunctionType::getNameForCallConv(CC) 418204a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall << FunctionType::getNameForCallConv(CCOld); 4183711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 4184711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 418504a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall } 418604a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 418704a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall // Diagnose the use of X86 fastcall on varargs or unprototyped functions. 418804a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall if (CC == CC_X86FastCall) { 4189711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (isa<FunctionNoProtoType>(fn)) { 4190711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::err_cconv_knr) 419104a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall << FunctionType::getNameForCallConv(CC); 4192711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 4193711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 419404a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall } 419504a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 4196711c52bb20d0c69063b52a99826fb7d2835501f1John McCall const FunctionProtoType *FnP = cast<FunctionProtoType>(fn); 419704a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall if (FnP->isVariadic()) { 4198711c52bb20d0c69063b52a99826fb7d2835501f1John McCall S.Diag(attr.getLoc(), diag::err_cconv_varargs) 419904a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall << FunctionType::getNameForCallConv(CC); 4200711c52bb20d0c69063b52a99826fb7d2835501f1John McCall attr.setInvalid(); 4201711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 420204a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall } 4203ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis 4204ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis // Also diagnose fastcall with regparm. 4205a49218e17bcbb1acde0245773173e2c0c42f4f19Eli Friedman if (fn->getHasRegParm()) { 4206ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis S.Diag(attr.getLoc(), diag::err_attributes_are_not_compatible) 4207ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis << "regparm" 4208ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis << FunctionType::getNameForCallConv(CC); 4209ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis attr.setInvalid(); 4210ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis return true; 4211ce95566b36a4ff16e90507633dad8b7a76572999Argyrios Kyrtzidis } 421204a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall } 4213f82b4e85b1219295cad4b5851b035575bc293010John McCall 4214711c52bb20d0c69063b52a99826fb7d2835501f1John McCall FunctionType::ExtInfo EI = unwrapped.get()->getExtInfo().withCallingConv(CC); 4215711c52bb20d0c69063b52a99826fb7d2835501f1John McCall type = unwrapped.wrap(S, S.Context.adjustFunctionType(unwrapped.get(), EI)); 4216711c52bb20d0c69063b52a99826fb7d2835501f1John McCall return true; 4217f82b4e85b1219295cad4b5851b035575bc293010John McCall} 4218f82b4e85b1219295cad4b5851b035575bc293010John McCall 4219207f4d8543529221932af82836016a2ef066c917Peter Collingbourne/// Handle OpenCL image access qualifiers: read_only, write_only, read_write 4220207f4d8543529221932af82836016a2ef066c917Peter Collingbournestatic void HandleOpenCLImageAccessAttribute(QualType& CurType, 4221207f4d8543529221932af82836016a2ef066c917Peter Collingbourne const AttributeList &Attr, 4222207f4d8543529221932af82836016a2ef066c917Peter Collingbourne Sema &S) { 4223207f4d8543529221932af82836016a2ef066c917Peter Collingbourne // Check the attribute arguments. 4224207f4d8543529221932af82836016a2ef066c917Peter Collingbourne if (Attr.getNumArgs() != 1) { 4225207f4d8543529221932af82836016a2ef066c917Peter Collingbourne S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 4226207f4d8543529221932af82836016a2ef066c917Peter Collingbourne Attr.setInvalid(); 4227207f4d8543529221932af82836016a2ef066c917Peter Collingbourne return; 4228207f4d8543529221932af82836016a2ef066c917Peter Collingbourne } 4229207f4d8543529221932af82836016a2ef066c917Peter Collingbourne Expr *sizeExpr = static_cast<Expr *>(Attr.getArg(0)); 4230207f4d8543529221932af82836016a2ef066c917Peter Collingbourne llvm::APSInt arg(32); 4231207f4d8543529221932af82836016a2ef066c917Peter Collingbourne if (sizeExpr->isTypeDependent() || sizeExpr->isValueDependent() || 4232207f4d8543529221932af82836016a2ef066c917Peter Collingbourne !sizeExpr->isIntegerConstantExpr(arg, S.Context)) { 4233207f4d8543529221932af82836016a2ef066c917Peter Collingbourne S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 4234207f4d8543529221932af82836016a2ef066c917Peter Collingbourne << "opencl_image_access" << sizeExpr->getSourceRange(); 4235207f4d8543529221932af82836016a2ef066c917Peter Collingbourne Attr.setInvalid(); 4236207f4d8543529221932af82836016a2ef066c917Peter Collingbourne return; 4237207f4d8543529221932af82836016a2ef066c917Peter Collingbourne } 4238207f4d8543529221932af82836016a2ef066c917Peter Collingbourne unsigned iarg = static_cast<unsigned>(arg.getZExtValue()); 4239207f4d8543529221932af82836016a2ef066c917Peter Collingbourne switch (iarg) { 4240207f4d8543529221932af82836016a2ef066c917Peter Collingbourne case CLIA_read_only: 4241207f4d8543529221932af82836016a2ef066c917Peter Collingbourne case CLIA_write_only: 4242207f4d8543529221932af82836016a2ef066c917Peter Collingbourne case CLIA_read_write: 4243207f4d8543529221932af82836016a2ef066c917Peter Collingbourne // Implemented in a separate patch 4244207f4d8543529221932af82836016a2ef066c917Peter Collingbourne break; 4245207f4d8543529221932af82836016a2ef066c917Peter Collingbourne default: 4246207f4d8543529221932af82836016a2ef066c917Peter Collingbourne // Implemented in a separate patch 4247207f4d8543529221932af82836016a2ef066c917Peter Collingbourne S.Diag(Attr.getLoc(), diag::err_attribute_invalid_size) 4248207f4d8543529221932af82836016a2ef066c917Peter Collingbourne << sizeExpr->getSourceRange(); 4249207f4d8543529221932af82836016a2ef066c917Peter Collingbourne Attr.setInvalid(); 4250207f4d8543529221932af82836016a2ef066c917Peter Collingbourne break; 4251207f4d8543529221932af82836016a2ef066c917Peter Collingbourne } 4252207f4d8543529221932af82836016a2ef066c917Peter Collingbourne} 4253207f4d8543529221932af82836016a2ef066c917Peter Collingbourne 42546e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// HandleVectorSizeAttribute - this attribute is only applicable to integral 42556e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// and float scalars, although arrays, pointers, and function return values are 42566e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// allowed in conjunction with this construct. Aggregates with this attribute 42576e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// are invalid, even if they are of the same size as a corresponding scalar. 42586e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// The raw attribute should contain precisely 1 argument, the vector size for 42596e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// the variable, measured in bytes. If curType and rawAttr are well formed, 42606e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson/// this routine will return a new vector type. 4261788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattnerstatic void HandleVectorSizeAttr(QualType& CurType, const AttributeList &Attr, 4262788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner Sema &S) { 426356affbcaeff9a01caa70b2a237f7e6ac31c8ded6Bob Wilson // Check the attribute arguments. 42646e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson if (Attr.getNumArgs() != 1) { 42656e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 4266e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 42676e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 42686e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 42696e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson Expr *sizeExpr = static_cast<Expr *>(Attr.getArg(0)); 42706e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson llvm::APSInt vecSize(32); 4271ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor if (sizeExpr->isTypeDependent() || sizeExpr->isValueDependent() || 4272ac06a0e1e3feb95c2ffd352c086882b492a65b99Douglas Gregor !sizeExpr->isIntegerConstantExpr(vecSize, S.Context)) { 42736e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 42746e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson << "vector_size" << sizeExpr->getSourceRange(); 4275e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 42766e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 42776e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 42786e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson // the base type must be integer or float, and can't already be a vector. 4279f60946222721d9ba3c059563935c17b84703187aDouglas Gregor if (!CurType->isIntegerType() && !CurType->isRealFloatingType()) { 42806e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type) << CurType; 4281e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 42826e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 42836e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 42846e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson unsigned typeSize = static_cast<unsigned>(S.Context.getTypeSize(CurType)); 42856e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson // vecSize is specified in bytes - convert to bits. 42866e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson unsigned vectorSize = static_cast<unsigned>(vecSize.getZExtValue() * 8); 42876e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson 42886e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson // the vector size needs to be an integral multiple of the type size. 42896e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson if (vectorSize % typeSize) { 42906e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson S.Diag(Attr.getLoc(), diag::err_attribute_invalid_size) 42916e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson << sizeExpr->getSourceRange(); 4292e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 42936e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 42946e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 42956e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson if (vectorSize == 0) { 42966e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson S.Diag(Attr.getLoc(), diag::err_attribute_zero_size) 42976e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson << sizeExpr->getSourceRange(); 4298e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara Attr.setInvalid(); 42996e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson return; 43006e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson } 43016e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson 43026e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson // Success! Instantiate the vector type, the number of elements is > 0, and 43036e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson // not required to be a power of 2, unlike GCC. 4304788b0fd67e1992f23555454efcdb16a19dfefac3Chris Lattner CurType = S.Context.getVectorType(CurType, vectorSize/typeSize, 4305e86d78cf4754a6aef2cf9a33d847aa15338e276fBob Wilson VectorType::GenericVector); 43066e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson} 43076e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson 43084ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor/// \brief Process the OpenCL-like ext_vector_type attribute when it occurs on 43094ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor/// a type. 431091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosierstatic void HandleExtVectorTypeAttr(QualType &CurType, 431191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier const AttributeList &Attr, 43124ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor Sema &S) { 43134ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor Expr *sizeExpr; 431491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 43154ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor // Special case where the argument is a template id. 43164ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor if (Attr.getParameterName()) { 43174ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor CXXScopeSpec SS; 4318e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara SourceLocation TemplateKWLoc; 43194ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor UnqualifiedId id; 43204ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor id.setIdentifier(Attr.getParameterName(), Attr.getLoc()); 4321e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara 4322e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara ExprResult Size = S.ActOnIdExpression(S.getCurScope(), SS, TemplateKWLoc, 4323e4b92761b43ced611c417ae478568610f1ad7b1eAbramo Bagnara id, false, false); 43244ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor if (Size.isInvalid()) 43254ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor return; 432691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 43274ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor sizeExpr = Size.get(); 43284ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor } else { 43294ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor // check the attribute arguments. 43304ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor if (Attr.getNumArgs() != 1) { 43314ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 43324ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor return; 43334ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor } 43344ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor sizeExpr = Attr.getArg(0); 43354ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor } 433691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 43374ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor // Create the vector type. 43384ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor QualType T = S.BuildExtVectorType(CurType, sizeExpr, Attr.getLoc()); 43394ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor if (!T.isNull()) 43404ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor CurType = T; 43414ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor} 43424ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor 43434211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// HandleNeonVectorTypeAttr - The "neon_vector_type" and 43444211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// "neon_polyvector_type" attributes are used to create vector types that 43454211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// are mangled according to ARM's ABI. Otherwise, these types are identical 43464211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// to those created with the "vector_size" attribute. Unlike "vector_size" 43474211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// the argument to these Neon attributes is the number of vector elements, 43484211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// not the vector size in bytes. The vector width and element type must 43494211bb68cff1f310be280f66a59520548ef99d8fBob Wilson/// match one of the standard Neon vector types. 43504211bb68cff1f310be280f66a59520548ef99d8fBob Wilsonstatic void HandleNeonVectorTypeAttr(QualType& CurType, 43514211bb68cff1f310be280f66a59520548ef99d8fBob Wilson const AttributeList &Attr, Sema &S, 43524211bb68cff1f310be280f66a59520548ef99d8fBob Wilson VectorType::VectorKind VecKind, 43534211bb68cff1f310be280f66a59520548ef99d8fBob Wilson const char *AttrName) { 43544211bb68cff1f310be280f66a59520548ef99d8fBob Wilson // Check the attribute arguments. 43554211bb68cff1f310be280f66a59520548ef99d8fBob Wilson if (Attr.getNumArgs() != 1) { 43564211bb68cff1f310be280f66a59520548ef99d8fBob Wilson S.Diag(Attr.getLoc(), diag::err_attribute_wrong_number_arguments) << 1; 43574211bb68cff1f310be280f66a59520548ef99d8fBob Wilson Attr.setInvalid(); 43584211bb68cff1f310be280f66a59520548ef99d8fBob Wilson return; 43594211bb68cff1f310be280f66a59520548ef99d8fBob Wilson } 43604211bb68cff1f310be280f66a59520548ef99d8fBob Wilson // The number of elements must be an ICE. 43614211bb68cff1f310be280f66a59520548ef99d8fBob Wilson Expr *numEltsExpr = static_cast<Expr *>(Attr.getArg(0)); 43624211bb68cff1f310be280f66a59520548ef99d8fBob Wilson llvm::APSInt numEltsInt(32); 43634211bb68cff1f310be280f66a59520548ef99d8fBob Wilson if (numEltsExpr->isTypeDependent() || numEltsExpr->isValueDependent() || 43644211bb68cff1f310be280f66a59520548ef99d8fBob Wilson !numEltsExpr->isIntegerConstantExpr(numEltsInt, S.Context)) { 43654211bb68cff1f310be280f66a59520548ef99d8fBob Wilson S.Diag(Attr.getLoc(), diag::err_attribute_argument_not_int) 43664211bb68cff1f310be280f66a59520548ef99d8fBob Wilson << AttrName << numEltsExpr->getSourceRange(); 43674211bb68cff1f310be280f66a59520548ef99d8fBob Wilson Attr.setInvalid(); 43684211bb68cff1f310be280f66a59520548ef99d8fBob Wilson return; 43694211bb68cff1f310be280f66a59520548ef99d8fBob Wilson } 43704211bb68cff1f310be280f66a59520548ef99d8fBob Wilson // Only certain element types are supported for Neon vectors. 43714211bb68cff1f310be280f66a59520548ef99d8fBob Wilson const BuiltinType* BTy = CurType->getAs<BuiltinType>(); 43724211bb68cff1f310be280f66a59520548ef99d8fBob Wilson if (!BTy || 43734211bb68cff1f310be280f66a59520548ef99d8fBob Wilson (VecKind == VectorType::NeonPolyVector && 43744211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::SChar && 43754211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::Short) || 43764211bb68cff1f310be280f66a59520548ef99d8fBob Wilson (BTy->getKind() != BuiltinType::SChar && 43774211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::UChar && 43784211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::Short && 43794211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::UShort && 43804211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::Int && 43814211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::UInt && 43824211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::LongLong && 43834211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::ULongLong && 43844211bb68cff1f310be280f66a59520548ef99d8fBob Wilson BTy->getKind() != BuiltinType::Float)) { 43854211bb68cff1f310be280f66a59520548ef99d8fBob Wilson S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type) <<CurType; 43864211bb68cff1f310be280f66a59520548ef99d8fBob Wilson Attr.setInvalid(); 43874211bb68cff1f310be280f66a59520548ef99d8fBob Wilson return; 43884211bb68cff1f310be280f66a59520548ef99d8fBob Wilson } 43894211bb68cff1f310be280f66a59520548ef99d8fBob Wilson // The total size of the vector must be 64 or 128 bits. 43904211bb68cff1f310be280f66a59520548ef99d8fBob Wilson unsigned typeSize = static_cast<unsigned>(S.Context.getTypeSize(CurType)); 43914211bb68cff1f310be280f66a59520548ef99d8fBob Wilson unsigned numElts = static_cast<unsigned>(numEltsInt.getZExtValue()); 43924211bb68cff1f310be280f66a59520548ef99d8fBob Wilson unsigned vecSize = typeSize * numElts; 43934211bb68cff1f310be280f66a59520548ef99d8fBob Wilson if (vecSize != 64 && vecSize != 128) { 43944211bb68cff1f310be280f66a59520548ef99d8fBob Wilson S.Diag(Attr.getLoc(), diag::err_attribute_bad_neon_vector_size) << CurType; 43954211bb68cff1f310be280f66a59520548ef99d8fBob Wilson Attr.setInvalid(); 43964211bb68cff1f310be280f66a59520548ef99d8fBob Wilson return; 43974211bb68cff1f310be280f66a59520548ef99d8fBob Wilson } 43984211bb68cff1f310be280f66a59520548ef99d8fBob Wilson 43994211bb68cff1f310be280f66a59520548ef99d8fBob Wilson CurType = S.Context.getVectorType(CurType, numElts, VecKind); 44004211bb68cff1f310be280f66a59520548ef99d8fBob Wilson} 44014211bb68cff1f310be280f66a59520548ef99d8fBob Wilson 4402711c52bb20d0c69063b52a99826fb7d2835501f1John McCallstatic void processTypeAttrs(TypeProcessingState &state, QualType &type, 4403f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith TypeAttrLocation TAL, AttributeList *attrs) { 4404c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // Scan through and apply attributes to this type where it makes sense. Some 4405c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // attributes (such as __address_space__, __vector_size__, etc) apply to the 4406c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // type, but others can be present in the type specifiers even though they 4407c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner // apply to the decl. Here we apply type attributes and ignore the rest. 4408711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 4409711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList *next; 4410711c52bb20d0c69063b52a99826fb7d2835501f1John McCall do { 4411711c52bb20d0c69063b52a99826fb7d2835501f1John McCall AttributeList &attr = *attrs; 4412711c52bb20d0c69063b52a99826fb7d2835501f1John McCall next = attr.getNext(); 4413711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 4414e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara // Skip attributes that were marked to be invalid. 4415711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (attr.isInvalid()) 4416e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara continue; 4417e215f7232dd4aa65ebf2a1ecd07cd95fe1ce3481Abramo Bagnara 4418cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith if (attr.isCXX11Attribute()) { 4419cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith // [[gnu::...]] attributes are treated as declaration attributes, so may 4420cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith // not appertain to a DeclaratorChunk, even if we handle them as type 4421cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith // attributes. 4422cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith if (attr.getScopeName() && attr.getScopeName()->isStr("gnu")) { 4423cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith if (TAL == TAL_DeclChunk) { 4424cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith state.getSema().Diag(attr.getLoc(), 4425cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith diag::warn_cxx11_gnu_attribute_on_type) 4426cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith << attr.getName(); 4427cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith continue; 4428cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith } 4429cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith } else if (TAL != TAL_DeclChunk) { 4430cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith // Otherwise, only consider type processing for a C++11 attribute if 4431cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith // it's actually been applied to a type. 4432cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith continue; 4433cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith } 4434f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith } 4435f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith 4436b1f1b267351be74013f966f4834cde1eddbe0233Abramo Bagnara // If this is an attribute we can handle, do so now, 4437b1f1b267351be74013f966f4834cde1eddbe0233Abramo Bagnara // otherwise, add it to the FnAttrs list for rechaining. 4438711c52bb20d0c69063b52a99826fb7d2835501f1John McCall switch (attr.getKind()) { 4439cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith default: 4440cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith // A C++11 attribute on a declarator chunk must appertain to a type. 4441d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith if (attr.isCXX11Attribute() && TAL == TAL_DeclChunk) { 4442cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith state.getSema().Diag(attr.getLoc(), diag::err_attribute_not_type_attr) 4443d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith << attr.getName(); 4444d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith attr.setUsedAsTypeAttr(); 4445d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith } 4446cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith break; 4447cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith 4448cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith case AttributeList::UnknownAttribute: 4449cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith if (attr.isCXX11Attribute() && TAL == TAL_DeclChunk) 4450cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith state.getSema().Diag(attr.getLoc(), 4451cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith diag::warn_unknown_attribute_ignored) 4452cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith << attr.getName(); 4453cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith break; 4454cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith 4455cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith case AttributeList::IgnoredAttribute: 4456cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith break; 445704a67a6aa3dfdc92d57f7f8d93ba397348c868a4John McCall 44588e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_MayAlias: 4459682eae243ae3d96fe3dc302091034e08c414db10Chandler Carruth // FIXME: This attribute needs to actually be handled, but if we ignore 4460682eae243ae3d96fe3dc302091034e08c414db10Chandler Carruth // it it breaks large amounts of Linux software. 4461682eae243ae3d96fe3dc302091034e08c414db10Chandler Carruth attr.setUsedAsTypeAttr(); 4462682eae243ae3d96fe3dc302091034e08c414db10Chandler Carruth break; 44638e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_AddressSpace: 4464711c52bb20d0c69063b52a99826fb7d2835501f1John McCall HandleAddressSpaceTypeAttribute(type, attr, state.getSema()); 4465e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 4466c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner break; 4467711c52bb20d0c69063b52a99826fb7d2835501f1John McCall OBJC_POINTER_TYPE_ATTRS_CASELIST: 4468711c52bb20d0c69063b52a99826fb7d2835501f1John McCall if (!handleObjCPointerTypeAttr(state, attr, type)) 4469711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeObjCPointerTypeAttr(state, attr, type); 4470e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 4471d33d9c0cc0cfdcd0b10f35a6acdfb25da4a64f19Fariborz Jahanian break; 44728e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_VectorSize: 4473711c52bb20d0c69063b52a99826fb7d2835501f1John McCall HandleVectorSizeAttr(type, attr, state.getSema()); 4474e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 4475f82b4e85b1219295cad4b5851b035575bc293010John McCall break; 44768e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_ExtVectorType: 4477a4fa9008988985f9cf01712a99ddd923aea278a0Richard Smith HandleExtVectorTypeAttr(type, attr, state.getSema()); 4478e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 44794ac01401b1ec602a1f58c217544d3dcb5fcbd7f1Douglas Gregor break; 44808e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_NeonVectorType: 4481711c52bb20d0c69063b52a99826fb7d2835501f1John McCall HandleNeonVectorTypeAttr(type, attr, state.getSema(), 4482711c52bb20d0c69063b52a99826fb7d2835501f1John McCall VectorType::NeonVector, "neon_vector_type"); 4483e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 44844211bb68cff1f310be280f66a59520548ef99d8fBob Wilson break; 44858e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_NeonPolyVectorType: 4486711c52bb20d0c69063b52a99826fb7d2835501f1John McCall HandleNeonVectorTypeAttr(type, attr, state.getSema(), 4487711c52bb20d0c69063b52a99826fb7d2835501f1John McCall VectorType::NeonPolyVector, 44884211bb68cff1f310be280f66a59520548ef99d8fBob Wilson "neon_polyvector_type"); 4489e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 44904211bb68cff1f310be280f66a59520548ef99d8fBob Wilson break; 44918e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_OpenCLImageAccess: 4492207f4d8543529221932af82836016a2ef066c917Peter Collingbourne HandleOpenCLImageAccessAttribute(type, attr, state.getSema()); 4493e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 4494207f4d8543529221932af82836016a2ef066c917Peter Collingbourne break; 4495207f4d8543529221932af82836016a2ef066c917Peter Collingbourne 4496d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith case AttributeList::AT_Win64: 4497d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith case AttributeList::AT_Ptr32: 4498d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith case AttributeList::AT_Ptr64: 4499d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith // FIXME: Don't ignore these. We have partial handling for them as 4500d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith // declaration attributes in SemaDeclAttr.cpp; that should be moved here. 4501d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith attr.setUsedAsTypeAttr(); 4502d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith break; 4503d03de6aaa312d57dcd6e2bc76bed1e89f5c5019dRichard Smith 45048e083e71d48f7f4d6ef40c00531c2e14df745486Sean Hunt case AttributeList::AT_NSReturnsRetained: 45054e4d08403ca5cfd4d558fa2936215d3a4e5a528dDavid Blaikie if (!state.getSema().getLangOpts().ObjCAutoRefCount) 4506cd8ab51a44e80625d84126780b0d85a7732e25afRichard Smith break; 4507f85e193739c953358c865005855253af4f68a497John McCall // fallthrough into the function attrs 4508f85e193739c953358c865005855253af4f68a497John McCall 4509711c52bb20d0c69063b52a99826fb7d2835501f1John McCall FUNCTION_TYPE_ATTRS_CASELIST: 4510e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall attr.setUsedAsTypeAttr(); 4511e82247a71a1a76e78f3b979b64d5f6412ab40266John McCall 4512711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Never process function type attributes as part of the 4513711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // declaration-specifiers. 4514f7a052732c2b6c82f74708038f75fa92c9b4dba0Richard Smith if (TAL == TAL_DeclSpec) 4515711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeFunctionTypeAttrFromDeclSpec(state, attr, type); 4516711c52bb20d0c69063b52a99826fb7d2835501f1John McCall 4517711c52bb20d0c69063b52a99826fb7d2835501f1John McCall // Otherwise, handle the possible delays. 4518711c52bb20d0c69063b52a99826fb7d2835501f1John McCall else if (!handleFunctionTypeAttr(state, attr, type)) 4519711c52bb20d0c69063b52a99826fb7d2835501f1John McCall distributeFunctionTypeAttr(state, attr, type); 45206e132aab867c189b1c3ee7463ef9d2b1f03a294dJohn Thompson break; 4521c9b346d7b3b24f8bf940735cc812893dfcef1d4bChris Lattner } 4522711c52bb20d0c69063b52a99826fb7d2835501f1John McCall } while ((attrs = next)); 4523232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner} 4524232e882226aa116807ee08a700dfc2350fbfabb1Chris Lattner 4525e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// \brief Ensure that the type of the given expression is complete. 4526e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// 4527e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// This routine checks whether the expression \p E has a complete type. If the 4528e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// expression refers to an instantiable construct, that instantiation is 4529e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// performed as needed to complete its type. Furthermore 4530e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// Sema::RequireCompleteType is called for the expression's type (or in the 4531e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// case of a reference type, the referred-to type). 4532e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// 4533e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// \param E The expression whose type is required to be complete. 4534d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor/// \param Diagnoser The object that will emit a diagnostic if the type is 4535d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor/// incomplete. 4536e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// 4537e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// \returns \c true if the type of \p E is incomplete and diagnosed, \c false 4538e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth/// otherwise. 4539f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregorbool Sema::RequireCompleteExprType(Expr *E, TypeDiagnoser &Diagnoser){ 4540e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth QualType T = E->getType(); 4541e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 4542e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // Fast path the case where the type is already complete. 4543e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth if (!T->isIncompleteType()) 4544e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth return false; 4545e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 4546e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // Incomplete array types may be completed by the initializer attached to 4547e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // their definitions. For static data members of class templates we need to 4548e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // instantiate the definition to get this initializer and complete the type. 4549e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth if (T->isIncompleteArrayType()) { 4550e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParens())) { 4551e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth if (VarDecl *Var = dyn_cast<VarDecl>(DRE->getDecl())) { 4552e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth if (Var->isStaticDataMember() && 4553e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth Var->getInstantiatedFromStaticDataMember()) { 455491cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 455536f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor MemberSpecializationInfo *MSInfo = Var->getMemberSpecializationInfo(); 455636f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor assert(MSInfo && "Missing member specialization information?"); 455736f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor if (MSInfo->getTemplateSpecializationKind() 455836f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor != TSK_ExplicitSpecialization) { 455936f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor // If we don't already have a point of instantiation, this is it. 456036f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor if (MSInfo->getPointOfInstantiation().isInvalid()) { 456136f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor MSInfo->setPointOfInstantiation(E->getLocStart()); 456291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 456391cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // This is a modification of an existing AST node. Notify 456436f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor // listeners. 456536f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor if (ASTMutationListener *L = getASTMutationListener()) 456636f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor L->StaticDataMemberInstantiated(Var); 456736f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor } 456891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 456936f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor InstantiateStaticDataMemberDefinition(E->getExprLoc(), Var); 457091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 457136f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor // Update the type to the newly instantiated definition's type both 457236f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor // here and within the expression. 457336f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor if (VarDecl *Def = Var->getDefinition()) { 457436f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor DRE->setDecl(Def); 457536f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor T = Def->getType(); 457636f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor DRE->setType(T); 457736f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor E->setType(T); 457836f255c324d37dd8e0e5ab2e026814e8396a05aaDouglas Gregor } 4579f15748a28c8443eef2924ef83689c358c661e9c5Douglas Gregor } 458091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4581e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // We still go on to try to complete the type independently, as it 4582e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // may also require instantiations or diagnostics if it remains 4583e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // incomplete. 4584e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth } 4585e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth } 4586e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth } 4587e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth } 4588e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 4589e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // FIXME: Are there other cases which require instantiating something other 4590e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // than the type to complete the type of an expression? 4591e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 4592e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth // Look through reference types and complete the referred type. 4593e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth if (const ReferenceType *Ref = T->getAs<ReferenceType>()) 4594e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth T = Ref->getPointeeType(); 4595e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 4596d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor return RequireCompleteType(E->getExprLoc(), T, Diagnoser); 4597d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor} 4598d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor 4599d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregornamespace { 4600f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor struct TypeDiagnoserDiag : Sema::TypeDiagnoser { 4601d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor unsigned DiagID; 460291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4603f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor TypeDiagnoserDiag(unsigned DiagID) 4604f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor : Sema::TypeDiagnoser(DiagID == 0), DiagID(DiagID) {} 460591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4606d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor virtual void diagnose(Sema &S, SourceLocation Loc, QualType T) { 4607d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor if (Suppressed) return; 4608d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor S.Diag(Loc, DiagID) << T; 4609d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor } 4610d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor }; 4611d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor} 4612d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor 4613d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregorbool Sema::RequireCompleteExprType(Expr *E, unsigned DiagID) { 4614f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor TypeDiagnoserDiag Diagnoser(DiagID); 4615d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor return RequireCompleteExprType(E, Diagnoser); 4616e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth} 4617e4d645cbe073042d8abc1a4eb600af4ff7a8dffbChandler Carruth 46181eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump/// @brief Ensure that the type T is a complete type. 46194ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 46204ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// This routine checks whether the type @p T is complete in any 46214ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// context where a complete type is required. If @p T is a complete 462286447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// type, returns false. If @p T is a class template specialization, 462386447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// this routine then attempts to perform class template 462486447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// instantiation. If instantiation fails, or if @p T is incomplete 462586447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// and cannot be completed, issues the diagnostic @p diag (giving it 462686447ec25fa34aa3c2f48ebc49ec09bc1f03f002Douglas Gregor/// the type @p T) and returns true. 46274ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 46284ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @param Loc The location in the source that the incomplete type 46294ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// diagnostic should refer to. 46304ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 46314ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @param T The type that this routine is examining for completeness. 46324ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// 46334ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @returns @c true if @p T is incomplete and a diagnostic was emitted, 46344ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor/// @c false otherwise. 463591a0cc913ecc5619b76d2e40742fd09725be8c56Anders Carlssonbool Sema::RequireCompleteType(SourceLocation Loc, QualType T, 4636f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor TypeDiagnoser &Diagnoser) { 4637573d9c325279b6e156c7fde163ffe3629c62d596Douglas Gregor // FIXME: Add this assertion to make sure we always get instantiation points. 4638573d9c325279b6e156c7fde163ffe3629c62d596Douglas Gregor // assert(!Loc.isInvalid() && "Invalid location in RequireCompleteType"); 4639690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor // FIXME: Add this assertion to help us flush out problems with 4640690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor // checking for dependent types and type-dependent expressions. 4641690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor // 46421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump // assert(!T->isDependentType() && 4643690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor // "Can't ask whether a dependent type is complete"); 4644690dc7f4f2c0fe87409839b7560c19dee7832195Douglas Gregor 46454ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor // If we have a complete type, we're done. 4646d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor NamedDecl *Def = 0; 4647d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor if (!T->isIncompleteType(&Def)) { 4648d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor // If we know about the definition but it is not visible, complain. 4649d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor if (!Diagnoser.Suppressed && Def && !LookupResult::isVisible(Def)) { 4650d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor // Suppress this error outside of a SFINAE context if we've already 465191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // emitted the error once for this type. There's no usefulness in 4652d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor // repeating the diagnostic. 4653d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor // FIXME: Add a Fix-It that imports the corresponding module or includes 4654d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor // the header. 4655ca2ab45341c448284cf93770018c717810575f86Douglas Gregor Module *Owner = Def->getOwningModule(); 4656ca2ab45341c448284cf93770018c717810575f86Douglas Gregor Diag(Loc, diag::err_module_private_definition) 4657ca2ab45341c448284cf93770018c717810575f86Douglas Gregor << T << Owner->getFullModuleName(); 4658ca2ab45341c448284cf93770018c717810575f86Douglas Gregor Diag(Def->getLocation(), diag::note_previous_definition); 4659ca2ab45341c448284cf93770018c717810575f86Douglas Gregor 4660ca2ab45341c448284cf93770018c717810575f86Douglas Gregor if (!isSFINAEContext()) { 4661ca2ab45341c448284cf93770018c717810575f86Douglas Gregor // Recover by implicitly importing this module. 4662ca2ab45341c448284cf93770018c717810575f86Douglas Gregor createImplicitModuleImport(Loc, Owner); 4663d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor } 4664d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor } 466591cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 46664ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor return false; 4667d07cc36c71558b62889691184dd04655a33fd12aDouglas Gregor } 46684ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor 4669bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan const TagType *Tag = T->getAs<TagType>(); 4670bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan const ObjCInterfaceType *IFace = 0; 467191cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4672bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan if (Tag) { 4673bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan // Avoid diagnosing invalid decls as incomplete. 4674bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan if (Tag->getDecl()->isInvalidDecl()) 4675bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan return true; 4676bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan 4677bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan // Give the external AST source a chance to complete the type. 4678bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan if (Tag->getDecl()->hasExternalLexicalStorage()) { 4679bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan Context.getExternalSource()->CompleteType(Tag->getDecl()); 4680bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan if (!Tag->isIncompleteType()) 4681bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan return false; 4682bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan } 4683bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan } 4684bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan else if ((IFace = T->getAs<ObjCInterfaceType>())) { 4685bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan // Avoid diagnosing invalid decls as incomplete. 4686bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan if (IFace->getDecl()->isInvalidDecl()) 4687bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan return true; 468891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4689bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan // Give the external AST source a chance to complete the type. 4690bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan if (IFace->getDecl()->hasExternalLexicalStorage()) { 4691bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan Context.getExternalSource()->CompleteType(IFace->getDecl()); 4692bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan if (!IFace->isIncompleteType()) 4693bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan return false; 4694bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan } 4695bd79119a50172db92ad3ce77ec3ac3c51e42a126Sean Callanan } 469691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4697d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor // If we have a class template specialization or a class member of a 4698923d56d436f750bc1f29db50e641078725558a1bSebastian Redl // class template specialization, or an array with known size of such, 4699923d56d436f750bc1f29db50e641078725558a1bSebastian Redl // try to instantiate it. 4700923d56d436f750bc1f29db50e641078725558a1bSebastian Redl QualType MaybeTemplate = T; 4701e656b8397f05fd1b7c4a735372f79a52f4e32be5Douglas Gregor while (const ConstantArrayType *Array 4702e656b8397f05fd1b7c4a735372f79a52f4e32be5Douglas Gregor = Context.getAsConstantArrayType(MaybeTemplate)) 4703923d56d436f750bc1f29db50e641078725558a1bSebastian Redl MaybeTemplate = Array->getElementType(); 4704923d56d436f750bc1f29db50e641078725558a1bSebastian Redl if (const RecordType *Record = MaybeTemplate->getAs<RecordType>()) { 47052943aed177b33ae3f14273b11a7b398e5276ec62Douglas Gregor if (ClassTemplateSpecializationDecl *ClassTemplateSpec 4706d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor = dyn_cast<ClassTemplateSpecializationDecl>(Record->getDecl())) { 4707972e6ce33c7e307f4b0da12bd6079bbd6ef76948Douglas Gregor if (ClassTemplateSpec->getSpecializationKind() == TSK_Undeclared) 4708972e6ce33c7e307f4b0da12bd6079bbd6ef76948Douglas Gregor return InstantiateClassTemplateSpecialization(Loc, ClassTemplateSpec, 4709d0e3daf2b980b505e535d35b432c938c6d0208efDouglas Gregor TSK_ImplicitInstantiation, 4710d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor /*Complain=*/!Diagnoser.Suppressed); 47111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } else if (CXXRecordDecl *Rec 4712d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor = dyn_cast<CXXRecordDecl>(Record->getDecl())) { 4713564f4c5664f552becbd05407611a92754c40e641Richard Smith CXXRecordDecl *Pattern = Rec->getInstantiatedFromMemberClass(); 4714564f4c5664f552becbd05407611a92754c40e641Richard Smith if (!Rec->isBeingDefined() && Pattern) { 4715564f4c5664f552becbd05407611a92754c40e641Richard Smith MemberSpecializationInfo *MSI = Rec->getMemberSpecializationInfo(); 4716564f4c5664f552becbd05407611a92754c40e641Richard Smith assert(MSI && "Missing member specialization information?"); 4717357bbd022c1d340c8e255aea7a684ddb34bc76e5Douglas Gregor // This record was instantiated from a class within a template. 4718564f4c5664f552becbd05407611a92754c40e641Richard Smith if (MSI->getTemplateSpecializationKind() != TSK_ExplicitSpecialization) 4719f6b1185f0a8a209c06dfc1efdb6a59cc851e970cDouglas Gregor return InstantiateClass(Loc, Rec, Pattern, 4720f6b1185f0a8a209c06dfc1efdb6a59cc851e970cDouglas Gregor getTemplateInstantiationArgs(Rec), 4721f6b1185f0a8a209c06dfc1efdb6a59cc851e970cDouglas Gregor TSK_ImplicitInstantiation, 4722d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor /*Complain=*/!Diagnoser.Suppressed); 4723d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor } 4724d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor } 4725d475b8d9e6f5ff0e6ab8d15667ce8a64c7cb9a4dDouglas Gregor } 47262943aed177b33ae3f14273b11a7b398e5276ec62Douglas Gregor 4727d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor if (Diagnoser.Suppressed) 47285842ba9fd482bb2fe5198b32c2ae549cd5474e6dDouglas Gregor return true; 4729d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor 47304ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor // We have an incomplete type. Produce a diagnostic. 4731d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor Diagnoser.diagnose(*this, Loc, T); 473291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 47334ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor // If the type was a forward declaration of a class/struct/union 473401620704304f819b82ecef769ec114e541a364d7Rafael Espindola // type, produce a note. 47354ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor if (Tag && !Tag->getDecl()->isInvalidDecl()) 47361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump Diag(Tag->getDecl()->getLocation(), 47374ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor Tag->isBeingDefined() ? diag::note_type_being_defined 47384ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor : diag::note_forward_declaration) 4739b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor << QualType(Tag, 0); 474091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4741b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor // If the Objective-C class was a forward declaration, produce a note. 4742b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor if (IFace && !IFace->getDecl()->isInvalidDecl()) 4743b3029960632ca8a3248e74770eda64d6c16f7246Douglas Gregor Diag(IFace->getDecl()->getLocation(), diag::note_forward_class); 47444ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor 47454ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor return true; 47464ec339f43c0cae2678334850c90926bea10999c7Douglas Gregor} 4747e6258936178b4c52b43b3b9dbec13552961cd645Douglas Gregor 4748fe6b2d481d91140923f4541f273b253291884214Douglas Gregorbool Sema::RequireCompleteType(SourceLocation Loc, QualType T, 474991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier unsigned DiagID) { 4750f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor TypeDiagnoserDiag Diagnoser(DiagID); 4751d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor return RequireCompleteType(Loc, T, Diagnoser); 4752fe6b2d481d91140923f4541f273b253291884214Douglas Gregor} 4753fe6b2d481d91140923f4541f273b253291884214Douglas Gregor 47546666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// \brief Get diagnostic %select index for tag kind for 47556666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// literal type diagnostic message. 47566666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// WARNING: Indexes apply to particular diagnostics only! 47576666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// 47586666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos/// \returns diagnostic %select index. 4759f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matosstatic unsigned getLiteralDiagFromTagKind(TagTypeKind Tag) { 47606666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos switch (Tag) { 4761f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matos case TTK_Struct: return 0; 4762f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matos case TTK_Interface: return 1; 4763f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matos case TTK_Class: return 2; 4764f143ae9b68cdd40dfb120094baaa702b810eb52cJoao Matos default: llvm_unreachable("Invalid tag kind for literal type diagnostic!"); 47656666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos } 47666666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos} 47676666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos 47689f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @brief Ensure that the type T is a literal type. 47699f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 47709f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// This routine checks whether the type @p T is a literal type. If @p T is an 47719f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// incomplete type, an attempt is made to complete it. If @p T is a literal 47729f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// type, or @p AllowIncompleteType is true and @p T is an incomplete type, 47739f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// returns false. Otherwise, this routine issues the diagnostic @p PD (giving 47749f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// it the type @p T), along with notes explaining why the type is not a 47759f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// literal type, and returns true. 47769f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 47779f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @param Loc The location in the source that the non-literal type 47789f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// diagnostic should refer to. 47799f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 47809f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @param T The type that this routine is examining for literalness. 47819f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 4782f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor/// @param Diagnoser Emits a diagnostic if T is not a literal type. 47839f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// 47849f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @returns @c true if @p T is not a literal type and a diagnostic was emitted, 47859f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith/// @c false otherwise. 47869f569cca2a4c5fb6026005434e27025b9e71309dRichard Smithbool Sema::RequireLiteralType(SourceLocation Loc, QualType T, 4787f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor TypeDiagnoser &Diagnoser) { 47889f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith assert(!T->isDependentType() && "type should not be dependent"); 47899f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 4790ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman QualType ElemType = Context.getBaseElementType(T); 4791ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman RequireCompleteType(Loc, ElemType, 0); 4792ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman 479386c3ae46250cdcc57778c27826060779a92f3815Richard Smith if (T->isLiteralType()) 47949f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return false; 47959f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 4796f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor if (Diagnoser.Suppressed) 47979f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 47989f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 4799f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor Diagnoser.diagnose(*this, Loc, T); 48009f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 48019f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith if (T->isVariableArrayType()) 48029f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 48039f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 4804ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman const RecordType *RT = ElemType->getAs<RecordType>(); 48059f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith if (!RT) 48069f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 48079f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 48089f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith const CXXRecordDecl *RD = cast<CXXRecordDecl>(RT->getDecl()); 48099f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 4810c799a6a5c884831c3c3ea57d30fbe4ab35709d49Richard Smith // A partially-defined class type can't be a literal type, because a literal 4811c799a6a5c884831c3c3ea57d30fbe4ab35709d49Richard Smith // class type must have a trivial destructor (which can't be checked until 4812c799a6a5c884831c3c3ea57d30fbe4ab35709d49Richard Smith // the class definition is complete). 4813c799a6a5c884831c3c3ea57d30fbe4ab35709d49Richard Smith if (!RD->isCompleteDefinition()) { 4814d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor RequireCompleteType(Loc, ElemType, diag::note_non_literal_incomplete, T); 4815ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman return true; 4816c799a6a5c884831c3c3ea57d30fbe4ab35709d49Richard Smith } 4817ee0653963537f6ea60f655856fb0c83d7d4010dbEli Friedman 48189f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith // If the class has virtual base classes, then it's not an aggregate, and 481986c3ae46250cdcc57778c27826060779a92f3815Richard Smith // cannot have any constexpr constructors or a trivial default constructor, 482086c3ae46250cdcc57778c27826060779a92f3815Richard Smith // so is non-literal. This is better to diagnose than the resulting absence 482186c3ae46250cdcc57778c27826060779a92f3815Richard Smith // of constexpr constructors. 48229f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith if (RD->getNumVBases()) { 48239f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith Diag(RD->getLocation(), diag::note_non_literal_virtual_base) 48246666ed4ed2e2bc13da5ac5d0a4947019137d45beJoao Matos << getLiteralDiagFromTagKind(RD->getTagKind()) << RD->getNumVBases(); 48259f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith for (CXXRecordDecl::base_class_const_iterator I = RD->vbases_begin(), 48269f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith E = RD->vbases_end(); I != E; ++I) 482796a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar Diag(I->getLocStart(), 48289f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith diag::note_constexpr_virtual_base_here) << I->getSourceRange(); 482986c3ae46250cdcc57778c27826060779a92f3815Richard Smith } else if (!RD->isAggregate() && !RD->hasConstexprNonCopyMoveConstructor() && 483086c3ae46250cdcc57778c27826060779a92f3815Richard Smith !RD->hasTrivialDefaultConstructor()) { 48319f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith Diag(RD->getLocation(), diag::note_non_literal_no_constexpr_ctors) << RD; 48329f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } else if (RD->hasNonLiteralTypeFieldsOrBases()) { 48339f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith for (CXXRecordDecl::base_class_const_iterator I = RD->bases_begin(), 48349f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith E = RD->bases_end(); I != E; ++I) { 48359f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith if (!I->getType()->isLiteralType()) { 483696a0014f9b963d8a987f1cccd48808a47f9c6331Daniel Dunbar Diag(I->getLocStart(), 48379f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith diag::note_non_literal_base_class) 48389f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith << RD << I->getType() << I->getSourceRange(); 48399f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 48409f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 48419f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 48429f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith for (CXXRecordDecl::field_iterator I = RD->field_begin(), 48439f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith E = RD->field_end(); I != E; ++I) { 4844262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie if (!I->getType()->isLiteralType() || 4845262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie I->getType().isVolatileQualified()) { 4846262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie Diag(I->getLocation(), diag::note_non_literal_field) 4847581deb3da481053c4993c7600f97acf7768caac5David Blaikie << RD << *I << I->getType() 4848262bc18e32500558af7cb0afa205b34bd37bafedDavid Blaikie << I->getType().isVolatileQualified(); 48499f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 48509f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 48519f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 48529f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } else if (!RD->hasTrivialDestructor()) { 48539f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith // All fields and bases are of literal types, so have trivial destructors. 48549f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith // If this class's destructor is non-trivial it must be user-declared. 48559f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith CXXDestructorDecl *Dtor = RD->getDestructor(); 48569f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith assert(Dtor && "class has literal fields and bases but no dtor?"); 48579f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith if (!Dtor) 48589f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 48599f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 48609f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith Diag(Dtor->getLocation(), Dtor->isUserProvided() ? 48619f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith diag::note_non_literal_user_provided_dtor : 48629f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith diag::note_non_literal_nontrivial_dtor) << RD; 4863ac71351acdefc9de0c770c1d717e621ac9e684bfRichard Smith if (!Dtor->isUserProvided()) 4864ac71351acdefc9de0c770c1d717e621ac9e684bfRichard Smith SpecialMemberIsTrivial(Dtor, CXXDestructor, /*Diagnose*/true); 48659f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith } 48669f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 48679f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith return true; 48689f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith} 48699f569cca2a4c5fb6026005434e27025b9e71309dRichard Smith 487091cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosierbool Sema::RequireLiteralType(SourceLocation Loc, QualType T, unsigned DiagID) { 4871f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor TypeDiagnoserDiag Diagnoser(DiagID); 4872f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor return RequireLiteralType(Loc, T, Diagnoser); 4873f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor} 4874f502d8ec9b43b259db9e37e9622279df46070fedDouglas Gregor 4875465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara/// \brief Retrieve a version of the type 'T' that is elaborated by Keyword 4876465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara/// and qualified by the nested-name-specifier contained in SS. 4877465d41b92b2c862f3062c412a0538db65c6a2661Abramo BagnaraQualType Sema::getElaboratedType(ElaboratedTypeKeyword Keyword, 4878465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara const CXXScopeSpec &SS, QualType T) { 4879465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara if (T.isNull()) 4880e6258936178b4c52b43b3b9dbec13552961cd645Douglas Gregor return T; 4881465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara NestedNameSpecifier *NNS; 4882e4da7a034a2fcf4b14d0bcc28d05de0878159061Abramo Bagnara if (SS.isValid()) 4883465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara NNS = static_cast<NestedNameSpecifier *>(SS.getScopeRep()); 4884465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara else { 4885465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara if (Keyword == ETK_None) 4886465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara return T; 4887465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara NNS = 0; 4888465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara } 4889465d41b92b2c862f3062c412a0538db65c6a2661Abramo Bagnara return Context.getElaboratedType(Keyword, NNS, T); 4890e6258936178b4c52b43b3b9dbec13552961cd645Douglas Gregor} 4891af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson 48922a984cad5ac3fdceeff2bd99daa7b90979313475John McCallQualType Sema::BuildTypeofExprType(Expr *E, SourceLocation Loc) { 4893fb8721ce4c6fef3739b1cbd1e38e3f1949462033John McCall ExprResult ER = CheckPlaceholderExpr(E); 48942a984cad5ac3fdceeff2bd99daa7b90979313475John McCall if (ER.isInvalid()) return QualType(); 48952a984cad5ac3fdceeff2bd99daa7b90979313475John McCall E = ER.take(); 48962a984cad5ac3fdceeff2bd99daa7b90979313475John McCall 48972b1d51bcf891f8887759aebb4b9e78dee8542e6dFariborz Jahanian if (!E->isTypeDependent()) { 48982b1d51bcf891f8887759aebb4b9e78dee8542e6dFariborz Jahanian QualType T = E->getType(); 4899aca7f7bab0102341863a0d1bdb048d69213ae362Fariborz Jahanian if (const TagType *TT = T->getAs<TagType>()) 4900aca7f7bab0102341863a0d1bdb048d69213ae362Fariborz Jahanian DiagnoseUseOfDecl(TT->getDecl(), E->getExprLoc()); 49012b1d51bcf891f8887759aebb4b9e78dee8542e6dFariborz Jahanian } 4902af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson return Context.getTypeOfExprType(E); 4903af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson} 4904af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson 4905f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor/// getDecltypeForExpr - Given an expr, will return the decltype for 4906f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor/// that expression, according to the rules in C++11 4907f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor/// [dcl.type.simple]p4 and C++11 [expr.lambda.prim]p18. 4908f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregorstatic QualType getDecltypeForExpr(Sema &S, Expr *E) { 4909f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (E->isTypeDependent()) 4910f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return S.Context.DependentTy; 4911f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor 49126d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // C++11 [dcl.type.simple]p4: 49136d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // The type denoted by decltype(e) is defined as follows: 49146d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // 49156d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // - if e is an unparenthesized id-expression or an unparenthesized class 491691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // member access (5.2.5), decltype(e) is the type of the entity named 491791cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // by e. If there is no such entity, or if e names a set of overloaded 49186d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // functions, the program is ill-formed; 491984dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor // 492084dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor // We apply the same rules for Objective-C ivar and property references. 4921f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E)) { 4922f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (const ValueDecl *VD = dyn_cast<ValueDecl>(DRE->getDecl())) 4923f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return VD->getType(); 492484dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor } else if (const MemberExpr *ME = dyn_cast<MemberExpr>(E)) { 4925f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (const FieldDecl *FD = dyn_cast<FieldDecl>(ME->getMemberDecl())) 4926f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return FD->getType(); 492784dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor } else if (const ObjCIvarRefExpr *IR = dyn_cast<ObjCIvarRefExpr>(E)) { 492884dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor return IR->getDecl()->getType(); 492984dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor } else if (const ObjCPropertyRefExpr *PR = dyn_cast<ObjCPropertyRefExpr>(E)) { 493084dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor if (PR->isExplicitProperty()) 493184dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor return PR->getExplicitProperty()->getType(); 4932f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 493384dd82e2088b1ea629f54f62a816f1155c78bb94Douglas Gregor 4934f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // C++11 [expr.lambda.prim]p18: 4935f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // Every occurrence of decltype((x)) where x is a possibly 4936f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // parenthesized id-expression that names an entity of automatic 4937f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // storage duration is treated as if x were transformed into an 4938f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // access to a corresponding data member of the closure type that 4939f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // would have been declared if x were an odr-use of the denoted 4940f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor // entity. 4941f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor using namespace sema; 4942f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (S.getCurLambda()) { 4943f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (isa<ParenExpr>(E)) { 4944f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(E->IgnoreParens())) { 4945f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor if (VarDecl *Var = dyn_cast<VarDecl>(DRE->getDecl())) { 494668932845a432d2a1dbbc57a84fd85bbb37c90487Douglas Gregor QualType T = S.getCapturedDeclRefType(Var, DRE->getLocation()); 494768932845a432d2a1dbbc57a84fd85bbb37c90487Douglas Gregor if (!T.isNull()) 494868932845a432d2a1dbbc57a84fd85bbb37c90487Douglas Gregor return S.Context.getLValueReferenceType(T); 4949f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 4950f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 4951f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 4952f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor } 4953f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor 4954f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor 49556d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // C++11 [dcl.type.simple]p4: 49566d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // [...] 49576d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor QualType T = E->getType(); 49586d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor switch (E->getValueKind()) { 495991cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // - otherwise, if e is an xvalue, decltype(e) is T&&, where T is the 49606d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // type of e; 49616d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor case VK_XValue: T = S.Context.getRValueReferenceType(T); break; 496291cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier // - otherwise, if e is an lvalue, decltype(e) is T&, where T is the 49636d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // type of e; 49646d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor case VK_LValue: T = S.Context.getLValueReferenceType(T); break; 49656d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor // - otherwise, decltype(e) is the type of e. 49666d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor case VK_RValue: break; 49676d9ef30c5026e80fb398ed32bcdf69e4d714f033Douglas Gregor } 496891cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4969f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return T; 4970f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor} 4971f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor 49722a984cad5ac3fdceeff2bd99daa7b90979313475John McCallQualType Sema::BuildDecltypeType(Expr *E, SourceLocation Loc) { 4973fb8721ce4c6fef3739b1cbd1e38e3f1949462033John McCall ExprResult ER = CheckPlaceholderExpr(E); 49742a984cad5ac3fdceeff2bd99daa7b90979313475John McCall if (ER.isInvalid()) return QualType(); 49752a984cad5ac3fdceeff2bd99daa7b90979313475John McCall E = ER.take(); 497691cbbbf506c892a26d4301e2b3ccd377b0938817Chad Rosier 4977f8af98286022f72157d84951b48fde5fb369ab29Douglas Gregor return Context.getDecltypeType(E, getDecltypeForExpr(*this, E)); 4978af017e682918f7a1a95ff08d9ab7ae3426436ca3Anders Carlsson} 4979ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt 4980ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean HuntQualType Sema::BuildUnaryTransformType(QualType BaseType, 4981ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt UnaryTransformType::UTTKind UKind, 4982ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt SourceLocation Loc) { 4983ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt switch (UKind) { 4984ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt case UnaryTransformType::EnumUnderlyingType: 4985ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt if (!BaseType->isDependentType() && !BaseType->isEnumeralType()) { 4986ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Diag(Loc, diag::err_only_enums_have_underlying_types); 4987ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt return QualType(); 4988ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } else { 4989ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt QualType Underlying = BaseType; 4990ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt if (!BaseType->isDependentType()) { 4991ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt EnumDecl *ED = BaseType->getAs<EnumType>()->getDecl(); 4992ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt assert(ED && "EnumType has no EnumDecl"); 4993ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt DiagnoseUseOfDecl(ED, Loc); 4994ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt Underlying = ED->getIntegerType(); 4995ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } 4996ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt assert(!Underlying.isNull()); 4997ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt return Context.getUnaryTransformType(BaseType, Underlying, 4998ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt UnaryTransformType::EnumUnderlyingType); 4999ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } 5000ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt } 5001ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt llvm_unreachable("unknown unary transform type"); 5002ca63c200346c0ca9e00194ec6e34a5a7b0ed9321Sean Hunt} 5003b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman 5004b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli FriedmanQualType Sema::BuildAtomicType(QualType T, SourceLocation Loc) { 5005b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman if (!T->isDependentType()) { 50068327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith // FIXME: It isn't entirely clear whether incomplete atomic types 50078327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith // are allowed or not; for simplicity, ban them for the moment. 5008d10099e5c8238fa0327f03921cf2e3c8975c881eDouglas Gregor if (RequireCompleteType(Loc, T, diag::err_atomic_specifier_bad_type, 0)) 50098327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith return QualType(); 50108327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith 5011b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman int DisallowedKind = -1; 50128327118ff60cd9c4812fba1e5ba4eb3cb5ed3401Richard Smith if (T->isArrayType()) 5013b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 1; 5014b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (T->isFunctionType()) 5015b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 2; 5016b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (T->isReferenceType()) 5017b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 3; 5018b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (T->isAtomicType()) 5019b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 4; 5020b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (T.hasQualifiers()) 5021b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 5; 5022b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman else if (!T.isTriviallyCopyableType(Context)) 5023b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman // Some other non-trivially-copyable type (probably a C++ class) 5024b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman DisallowedKind = 6; 5025b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman 5026b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman if (DisallowedKind != -1) { 5027b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman Diag(Loc, diag::err_atomic_specifier_bad_type) << DisallowedKind << T; 5028b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman return QualType(); 5029b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman } 5030b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman 5031b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman // FIXME: Do we need any handling for ARC here? 5032b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman } 5033b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman 5034b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman // Build the pointer type. 5035b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman return Context.getAtomicType(T); 5036b001de7458d17c17e6d8b8034c7cfcefd3b70c00Eli Friedman} 5037