Sema.h revision 84b007fae6c0cd30fa07074d34fbe2bf61fa44f9
18b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project//===--- Sema.h - Semantic Analysis & AST Building --------------*- C++ -*-===// 28b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// 38b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// The LLVM Compiler Infrastructure 48b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// 58b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// This file is distributed under the University of Illinois Open Source 68b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// License. See LICENSE.TXT for details. 78b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// 88b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project//===----------------------------------------------------------------------===// 98b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// 108b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// This file defines the Sema class, which performs semantic analysis and 118b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// builds ASTs. 128b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// 138b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project//===----------------------------------------------------------------------===// 148b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 158b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#ifndef LLVM_CLANG_SEMA_SEMA_H 168b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#define LLVM_CLANG_SEMA_SEMA_H 175d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner 185d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner#include "clang/Sema/Ownership.h" 198b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/Sema/AnalysisBasedWarnings.h" 205d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner#include "clang/Sema/IdentifierResolver.h" 218b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/Sema/ObjCMethodList.h" 228b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/Sema/DeclSpec.h" 238b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/Sema/ExternalSemaSource.h" 248b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/Sema/LocInfoType.h" 258b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/Sema/MultiInitializer.h" 268b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/Sema/TypoCorrection.h" 278b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/Sema/Weak.h" 288b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/AST/Expr.h" 298b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/AST/DeclarationName.h" 308b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/AST/ExternalASTSource.h" 318b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/AST/TypeLoc.h" 328b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/Lex/ModuleLoader.h" 338b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/Basic/Specifiers.h" 348b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/Basic/TemplateKinds.h" 355d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner#include "clang/Basic/TypeTraits.h" 365d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner#include "clang/Basic/ExpressionTraits.h" 375d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner#include "llvm/ADT/ArrayRef.h" 388b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "llvm/ADT/OwningPtr.h" 398b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "llvm/ADT/SmallPtrSet.h" 408b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "llvm/ADT/SmallVector.h" 418b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include <deque> 428b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include <string> 438b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 448b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Projectnamespace llvm { 455d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner class APSInt; 468b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project template <typename ValueT> struct DenseMapInfo; 478b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project template <typename ValueT, typename ValueInfoT> class DenseSet; 488b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project} 498b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 508b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Projectnamespace clang { 518b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ADLResult; 528b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ASTConsumer; 538b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ASTContext; 548b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ASTMutationListener; 558b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ASTReader; 568b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ASTWriter; 578b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ArrayType; 588b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class AttributeList; 598b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class BlockDecl; 608b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CXXBasePath; 618b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CXXBasePaths; 628b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project typedef SmallVector<CXXBaseSpecifier*, 4> CXXCastPath; 638b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CXXConstructorDecl; 648b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CXXConversionDecl; 658b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CXXDestructorDecl; 668b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CXXFieldCollector; 678b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CXXMemberCallExpr; 688b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CXXMethodDecl; 698b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CXXScopeSpec; 708b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CXXTemporary; 718b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CXXTryStmt; 728b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CallExpr; 738b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ClassTemplateDecl; 748b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ClassTemplatePartialSpecializationDecl; 758b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ClassTemplateSpecializationDecl; 768b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CodeCompleteConsumer; 778b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CodeCompletionAllocator; 788b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class CodeCompletionResult; 798b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class Decl; 805d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner class DeclAccessPair; 818b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class DeclContext; 828b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class DeclRefExpr; 838b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class DeclaratorDecl; 848b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class DeducedTemplateArgument; 858b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class DependentDiagnostic; 868b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class DesignatedInitExpr; 878b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class Designation; 888b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class EnumConstantDecl; 898b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class Expr; 908b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ExtVectorType; 918b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ExternalSemaSource; 928b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class FormatAttr; 938b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class FriendDecl; 948b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class FunctionDecl; 958b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class FunctionProtoType; 968b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class FunctionTemplateDecl; 978b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ImplicitConversionSequence; 985d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner class InitListExpr; 998b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class InitializationKind; 1008b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class InitializationSequence; 1018b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class InitializedEntity; 1028b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class IntegerLiteral; 1038b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class LabelStmt; 1048b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class LangOptions; 1058b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class LocalInstantiationScope; 1068b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class LookupResult; 1078b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class MacroInfo; 1088b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class MultiLevelTemplateArgumentList; 1098b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class NamedDecl; 1108b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class NonNullAttr; 1118b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ObjCCategoryDecl; 1128b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ObjCCategoryImplDecl; 1138b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ObjCCompatibleAliasDecl; 1148b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ObjCContainerDecl; 1158b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ObjCImplDecl; 1168b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ObjCImplementationDecl; 1178b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ObjCInterfaceDecl; 1188b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ObjCIvarDecl; 1198b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project template <class T> class ObjCList; 1208b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ObjCMessageExpr; 1218b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ObjCMethodDecl; 1228b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ObjCPropertyDecl; 1238b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ObjCProtocolDecl; 1248b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class OverloadCandidateSet; 1258b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class OverloadExpr; 1268b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ParenListExpr; 1278b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ParmVarDecl; 1288b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class Preprocessor; 1298b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class PseudoDestructorTypeStorage; 1308b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class PseudoObjectExpr; 1318b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class QualType; 1328b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class StandardConversionSequence; 1338b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class Stmt; 1348b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class StringLiteral; 1358b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class SwitchStmt; 1368b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class TargetAttributesSema; 1378b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class TemplateArgument; 1388b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class TemplateArgumentList; 1398b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class TemplateArgumentLoc; 1408b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class TemplateDecl; 1418b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class TemplateParameterList; 1428b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class TemplatePartialOrderingContext; 1438b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class TemplateTemplateParmDecl; 1448b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class Token; 1458b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class TypeAliasDecl; 1468b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class TypedefDecl; 1478b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class TypedefNameDecl; 1488b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class TypeLoc; 1498b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class UnqualifiedId; 1508b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class UnresolvedLookupExpr; 1518b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class UnresolvedMemberExpr; 1528b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class UnresolvedSetImpl; 1538b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class UnresolvedSetIterator; 1548b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class UsingDecl; 1558b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class UsingShadowDecl; 1568b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ValueDecl; 1578b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class VarDecl; 1588b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class VisibilityAttr; 1598b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class VisibleDeclConsumer; 1608b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class IndirectFieldDecl; 1618b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1628b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Projectnamespace sema { 1638b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class AccessedEntity; 1648b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class BlockScopeInfo; 1658b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class DelayedDiagnostic; 1668b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class FunctionScopeInfo; 1678b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class LambdaScopeInfo; 1688b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class PossiblyUnreachableDiag; 1698b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class TemplateDeductionInfo; 1708b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project} 1718b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1728b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// FIXME: No way to easily map from TemplateTypeParmTypes to 1738b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// TemplateTypeParmDecls, so we have this horrible PointerUnion. 1748b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Projecttypedef std::pair<llvm::PointerUnion<const TemplateTypeParmType*, NamedDecl*>, 1758b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project SourceLocation> UnexpandedParameterPack; 1768b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1778b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project/// Sema - This implements semantic analysis and AST building for C. 1788b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Projectclass Sema { 1798b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project Sema(const Sema&); // DO NOT IMPLEMENT 1808b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void operator=(const Sema&); // DO NOT IMPLEMENT 1818b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project mutable const TargetAttributesSema* TheTargetAttributesSema; 1828b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Projectpublic: 1838b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project typedef OpaquePtr<DeclGroupRef> DeclGroupPtrTy; 1848b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project typedef OpaquePtr<TemplateName> TemplateTy; 1858b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project typedef OpaquePtr<QualType> TypeTy; 1868b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1878b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project OpenCLOptions OpenCLFeatures; 1888b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project FPOptions FPFeatures; 1898b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1908b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project const LangOptions &LangOpts; 1918b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project Preprocessor &PP; 1928b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ASTContext &Context; 1938b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ASTConsumer &Consumer; 1948b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project DiagnosticsEngine &Diags; 1958b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project SourceManager &SourceMgr; 1968b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1978b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Flag indicating whether or not to collect detailed statistics. 1988b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project bool CollectStats; 1998b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2008b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Source of additional semantic information. 2018b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ExternalSemaSource *ExternalSource; 2028b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2038b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Code-completion consumer. 2048b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project CodeCompleteConsumer *CodeCompleter; 2058b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2068b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// CurContext - This is the current declaration context of parsing. 2078b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project DeclContext *CurContext; 2088b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2098b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Generally null except when we temporarily switch decl contexts, 2108b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// like in \see ActOnObjCTemporaryExitContainerContext. 2118b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project DeclContext *OriginalLexicalContext; 2128b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2138b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// VAListTagName - The declaration name corresponding to __va_list_tag. 2148b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// This is used as part of a hack to omit that class from ADL results. 2158b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project DeclarationName VAListTagName; 2168b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2178b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// PackContext - Manages the stack for #pragma pack. An alignment 2188b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// of 0 indicates default alignment. 2198b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void *PackContext; // Really a "PragmaPackStack*" 2208b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2218b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project bool MSStructPragmaOn; // True when #pragma ms_struct on 2228b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2238b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// VisContext - Manages the stack for #pragma GCC visibility. 2248b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void *VisContext; // Really a "PragmaVisStack*" 2258b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2268b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// ExprNeedsCleanups - True if the current evaluation context 2278b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// requires cleanups to be run at its conclusion. 2288b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project bool ExprNeedsCleanups; 2298b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2308b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// ExprCleanupObjects - This is the stack of objects requiring 2318b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// cleanup that are created by the current full expression. The 2328b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// element type here is ExprWithCleanups::Object. 2338b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project SmallVector<BlockDecl*, 8> ExprCleanupObjects; 2348b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2358b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Stack containing information about each of the nested 2368b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// function, block, and method scopes that are currently active. 2378b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// 2388b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// This array is never empty. Clients should ignore the first 2398b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// element, which is used to cache a single FunctionScopeInfo 2408b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// that's used to parse every top-level function. 241bcde1092aca184dbd7860078af020de7d1e4e22fDavid 'Digit' Turner SmallVector<sema::FunctionScopeInfo *, 4> FunctionScopes; 2428b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2438b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project typedef LazyVector<TypedefNameDecl *, ExternalSemaSource, 2448b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project &ExternalSemaSource::ReadExtVectorDecls, 2, 2> 2458b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ExtVectorDeclsType; 2468b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2478b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// ExtVectorDecls - This is a list all the extended vector types. This allows 2488b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// us to associate a raw vector type with one of the ext_vector type names. 2498b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// This is only necessary for issuing pretty diagnostics. 2508b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ExtVectorDeclsType ExtVectorDecls; 2518b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2528b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The set of types for which we have already complained about the 2538b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// definitions being hidden. 2548b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// 2558b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// This set is used to suppress redundant diagnostics. 2568b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project llvm::SmallPtrSet<NamedDecl *, 4> HiddenDefinitions; 2578b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2588b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// FieldCollector - Collects CXXFieldDecls during parsing of C++ classes. 2598b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project llvm::OwningPtr<CXXFieldCollector> FieldCollector; 2608b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2618b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project typedef llvm::SmallPtrSet<const CXXRecordDecl*, 8> RecordDeclSetTy; 2628b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2638b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// PureVirtualClassDiagSet - a set of class declarations which we have 2648b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// emitted a list of pure virtual functions. Used to prevent emitting the 2658b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// same list more than once. 2668b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project llvm::OwningPtr<RecordDeclSetTy> PureVirtualClassDiagSet; 2678b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2688b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// ParsingInitForAutoVars - a set of declarations with auto types for which 2698b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// we are currently parsing the initializer. 2708b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project llvm::SmallPtrSet<const Decl*, 4> ParsingInitForAutoVars; 2718b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2728b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief A mapping from external names to the most recent 2738b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// locally-scoped external declaration with that name. 2748b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// 2758b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// This map contains external declarations introduced in local 2768b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// scoped, e.g., 2778b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// 2788b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \code 2798b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// void f() { 2808b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// void foo(int, int); 2818b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// } 2828b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \endcode 2838b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// 2848b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// Here, the name "foo" will be associated with the declaration on 2858b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// "foo" within f. This name is not visible outside of 2868b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// "f". However, we still find it in two cases: 2878b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// 2888b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// - If we are declaring another external with the name "foo", we 2898b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// can find "foo" as a previous declaration, so that the types 2908b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// of this external declaration can be checked for 2918b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// compatibility. 2928b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// 2938b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// - If we would implicitly declare "foo" (e.g., due to a call to 2948b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// "foo" in C when no prototype or definition is visible), then 2958b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// we find this declaration of "foo" and complain that it is 2968b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// not visible. 2978b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project llvm::DenseMap<DeclarationName, NamedDecl *> LocallyScopedExternalDecls; 2988b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 2998b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Look for a locally scoped external declaration by the given name. 3008b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project llvm::DenseMap<DeclarationName, NamedDecl *>::iterator 3018b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project findLocallyScopedExternalDecl(DeclarationName Name); 3028b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3038b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project typedef LazyVector<VarDecl *, ExternalSemaSource, 3048b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project &ExternalSemaSource::ReadTentativeDefinitions, 2, 2> 3058b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project TentativeDefinitionsType; 3068b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3078b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief All the tentative definitions encountered in the TU. 3088b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project TentativeDefinitionsType TentativeDefinitions; 3098b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3108b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project typedef LazyVector<const DeclaratorDecl *, ExternalSemaSource, 3118b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project &ExternalSemaSource::ReadUnusedFileScopedDecls, 2, 2> 3128b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project UnusedFileScopedDeclsType; 3138b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3148b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The set of file scoped decls seen so far that have not been used 3158b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// and must warn if not used. Only contains the first declaration. 3168b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project UnusedFileScopedDeclsType UnusedFileScopedDecls; 3178b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3188b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project typedef LazyVector<CXXConstructorDecl *, ExternalSemaSource, 3198b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project &ExternalSemaSource::ReadDelegatingConstructors, 2, 2> 3208b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project DelegatingCtorDeclsType; 3218b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3228b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief All the delegating constructors seen so far in the file, used for 3238b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// cycle detection at the end of the TU. 3248b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project DelegatingCtorDeclsType DelegatingCtorDecls; 3258b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3268b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief All the overriding destructors seen during a class definition 3278b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// (there could be multiple due to nested classes) that had their exception 3288b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// spec checks delayed, plus the overridden destructor. 3298b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project SmallVector<std::pair<const CXXDestructorDecl*, 3308b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project const CXXDestructorDecl*>, 2> 3318b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project DelayedDestructorExceptionSpecChecks; 3328b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3338b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Callback to the parser to parse templated functions when needed. 3348b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project typedef void LateTemplateParserCB(void *P, const FunctionDecl *FD); 3358b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project LateTemplateParserCB *LateTemplateParser; 3368b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void *OpaqueParser; 3378b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3388b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void SetLateTemplateParser(LateTemplateParserCB *LTP, void *P) { 3398b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project LateTemplateParser = LTP; 3408b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project OpaqueParser = P; 3418b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 3428b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3438b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class DelayedDiagnostics; 3448b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3458b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ParsingDeclState { 3468b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project unsigned SavedStackSize; 3475d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner friend class Sema::DelayedDiagnostics; 3488b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project }; 3498b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3508b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ProcessingContextState { 351bcde1092aca184dbd7860078af020de7d1e4e22fDavid 'Digit' Turner unsigned SavedParsingDepth; 3528b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project unsigned SavedActiveStackBase; 3538b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project friend class Sema::DelayedDiagnostics; 3548b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project }; 3558b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3568b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// A class which encapsulates the logic for delaying diagnostics 3578b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// during parsing and other processing. 3588b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class DelayedDiagnostics { 359bcde1092aca184dbd7860078af020de7d1e4e22fDavid 'Digit' Turner /// \brief The stack of diagnostics that were delayed due to being 3608b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// produced during the parsing of a declaration. 3618b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project sema::DelayedDiagnostic *Stack; 3628b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3638b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The number of objects on the delayed-diagnostics stack. 3648b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project unsigned StackSize; 3655d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner 3668b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The current capacity of the delayed-diagnostics stack. 3675d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner unsigned StackCapacity; 3688b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3698b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The index of the first "active" delayed diagnostic in 3708b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// the stack. When parsing class definitions, we ignore active 3718b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// delayed diagnostics from the surrounding context. 3728b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project unsigned ActiveStackBase; 3738b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 374bcde1092aca184dbd7860078af020de7d1e4e22fDavid 'Digit' Turner /// \brief The depth of the declarations we're currently parsing. 3758b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// This gets saved and reset whenever we enter a class definition. 3768b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project unsigned ParsingDepth; 3778b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3788b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project public: 3798b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project DelayedDiagnostics() : Stack(0), StackSize(0), StackCapacity(0), 3808b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ActiveStackBase(0), ParsingDepth(0) {} 3818b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3828b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ~DelayedDiagnostics() { 3838b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project delete[] reinterpret_cast<char*>(Stack); 3848b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 3858b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3868b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// Adds a delayed diagnostic. 3878b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void add(const sema::DelayedDiagnostic &diag); 3888b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3898b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// Determines whether diagnostics should be delayed. 3908b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project bool shouldDelayDiagnostics() { return ParsingDepth > 0; } 3918b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 3928b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// Observe that we've started parsing a declaration. Access and 3938b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// deprecation diagnostics will be delayed; when the declaration 3948b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// is completed, all active delayed diagnostics will be evaluated 3958b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// in its context, and then active diagnostics stack will be 3968b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// popped down to the saved depth. 3978b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ParsingDeclState pushParsingDecl() { 3988b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ParsingDepth++; 3998b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4008b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ParsingDeclState state; 4018b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project state.SavedStackSize = StackSize; 4028b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project return state; 4038b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 4048b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4058b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// Observe that we're completed parsing a declaration. 4068b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project static void popParsingDecl(Sema &S, ParsingDeclState state, Decl *decl); 4078b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4088b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// Observe that we've started processing a different context, the 4098b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// contents of which are semantically separate from the 4108b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// declarations it may lexically appear in. This sets aside the 4118b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// current stack of active diagnostics and starts afresh. 4128b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ProcessingContextState pushContext() { 4138b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project assert(StackSize >= ActiveStackBase); 4148b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4158b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ProcessingContextState state; 4168b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project state.SavedParsingDepth = ParsingDepth; 4178b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project state.SavedActiveStackBase = ActiveStackBase; 4188b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4198b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ActiveStackBase = StackSize; 4208b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ParsingDepth = 0; 4218b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4228b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project return state; 4238b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 4248b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4258b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// Observe that we've stopped processing a context. This 4268b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// restores the previous stack of active diagnostics. 4278b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void popContext(ProcessingContextState state) { 4288b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project assert(ActiveStackBase == StackSize); 4298b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project assert(ParsingDepth == 0); 4308b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ActiveStackBase = state.SavedActiveStackBase; 4318b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ParsingDepth = state.SavedParsingDepth; 4328b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 4338b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } DelayedDiagnostics; 4348b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4358b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// A RAII object to temporarily push a declaration context. 4368b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class ContextRAII { 4378b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project private: 4388b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project Sema &S; 4398b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project DeclContext *SavedContext; 4408b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ProcessingContextState SavedContextState; 4418b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4428b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project public: 4438b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ContextRAII(Sema &S, DeclContext *ContextToPush) 4448b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project : S(S), SavedContext(S.CurContext), 4458b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project SavedContextState(S.DelayedDiagnostics.pushContext()) 4468b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project { 4478b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project assert(ContextToPush && "pushing null context"); 4488b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project S.CurContext = ContextToPush; 4498b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 4508b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4518b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void pop() { 4528b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project if (!SavedContext) return; 4538b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project S.CurContext = SavedContext; 4548b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project S.DelayedDiagnostics.popContext(SavedContextState); 4558b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project SavedContext = 0; 4568b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 4578b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4588b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ~ContextRAII() { 4598b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project pop(); 4608b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 4618b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project }; 4628b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4638b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// WeakUndeclaredIdentifiers - Identifiers contained in 4648b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// #pragma weak before declared. rare. may alias another 4658b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// identifier, declared or undeclared 4668b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project llvm::DenseMap<IdentifierInfo*,WeakInfo> WeakUndeclaredIdentifiers; 4678b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4688b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Load weak undeclared identifiers from the external source. 4698b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void LoadExternalWeakUndeclaredIdentifiers(); 4708b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4718b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// WeakTopLevelDecl - Translation-unit scoped declarations generated by 4728b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// #pragma weak during processing of other Decls. 4738b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// I couldn't figure out a clean way to generate these in-line, so 4748b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// we store them here and handle separately -- which is a hack. 4758b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// It would be best to refactor this. 4768b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project SmallVector<Decl*,2> WeakTopLevelDecl; 4778b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4788b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project IdentifierResolver IdResolver; 4798b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4808b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// Translation Unit Scope - useful to Objective-C actions that need 4818b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// to lookup file scope declarations in the "ordinary" C decl namespace. 4828b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// For example, user-defined classes, built-in "id" type, etc. 4838b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project Scope *TUScope; 4848b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4858b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The C++ "std" namespace, where the standard library resides. 4868b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project LazyDeclPtr StdNamespace; 4878b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4888b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The C++ "std::bad_alloc" class, which is defined by the C++ 4898b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// standard library. 4908b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project LazyDeclPtr StdBadAlloc; 4918b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4928b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The C++ "std::initializer_list" template, which is defined in 4938b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// <initializer_list>. 4948b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ClassTemplateDecl *StdInitializerList; 4958b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4968b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The C++ "type_info" declaration, which is defined in <typeinfo>. 4978b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project RecordDecl *CXXTypeInfoDecl; 4988b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 4998b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The MSVC "_GUID" struct, which is defined in MSVC header files. 5008b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project RecordDecl *MSVCGuidDecl; 5018b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5028b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// A flag to remember whether the implicit forms of operator new and delete 5038b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// have been declared. 5048b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project bool GlobalNewDeleteDeclared; 5058b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5068b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5078b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// A flag that is set when parsing a -dealloc method and no [super dealloc] 5088b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// call was found yet. 5095d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner bool ObjCShouldCallSuperDealloc; 5108b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// A flag that is set when parsing a -finalize method and no [super finalize] 5118b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// call was found yet. 512bcde1092aca184dbd7860078af020de7d1e4e22fDavid 'Digit' Turner bool ObjCShouldCallSuperFinalize; 5138b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5148b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Describes how the expressions currently being parsed are 5158b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// evaluated at run-time, if at all. 5168b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project enum ExpressionEvaluationContext { 5178b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The current expression and its subexpressions occur within an 5188b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// unevaluated operand (C++11 [expr]p7), such as the subexpression of 519bcde1092aca184dbd7860078af020de7d1e4e22fDavid 'Digit' Turner /// \c sizeof, where the type of the expression may be significant but 5208b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// no code will be generated to evaluate the value of the expression at 5218b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// run time. 5228b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project Unevaluated, 5238b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5248b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The current context is "potentially evaluated" in C++11 terms, 5255d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner /// but the expression is evaluated at compile-time (like the values of 5268b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// cases in a switch statment). 5275d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner ConstantEvaluated, 5288b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5298b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The current expression is potentially evaluated at run time, 5308b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// which means that code may be generated to evaluate the value of the 5315d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner /// expression at run time. 5328b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project PotentiallyEvaluated, 5338b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5348b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The current expression is potentially evaluated, but any 5358b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// declarations referenced inside that expression are only used if 5368b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// in fact the current expression is used. 5378b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// 5388b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// This value is used when parsing default function arguments, for which 5398b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// we would like to provide diagnostics (e.g., passing non-POD arguments 5408b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// through varargs) but do not want to mark declarations as "referenced" 5418b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// until the default argument is used. 5428b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project PotentiallyEvaluatedIfUsed 5438b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project }; 5448b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5458b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Data structure used to record current or nested 5468b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// expression evaluation contexts. 5478b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project struct ExpressionEvaluationContextRecord { 5488b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The expression evaluation context. 5498b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ExpressionEvaluationContext Context; 5508b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5518b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Whether the enclosing context needed a cleanup. 5528b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project bool ParentNeedsCleanups; 5538b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5548b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The number of active cleanup objects when we entered 5558b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// this expression evaluation context. 5568b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project unsigned NumCleanupObjects; 5578b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5588b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ExpressionEvaluationContextRecord(ExpressionEvaluationContext Context, 5598b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project unsigned NumCleanupObjects, 5608b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project bool ParentNeedsCleanups) 5618b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project : Context(Context), ParentNeedsCleanups(ParentNeedsCleanups), 5628b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project NumCleanupObjects(NumCleanupObjects) { } 5638b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project }; 5648b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5658b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// A stack of expression evaluation contexts. 5668b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project SmallVector<ExpressionEvaluationContextRecord, 8> ExprEvalContexts; 5678b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5688b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// SpecialMemberOverloadResult - The overloading result for a special member 5698b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// function. 5708b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// 5718b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// This is basically a wrapper around PointerIntPair. The lowest bit of the 5728b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// integer is used to determine whether we have a parameter qualification 5738b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// match, the second-lowest is whether we had success in resolving the 5748b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// overload to a unique non-deleted function. 5758b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// 5768b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// The ConstParamMatch bit represents whether, when looking up a copy 5778b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// constructor or assignment operator, we found a potential copy 5788b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// constructor/assignment operator whose first parameter is const-qualified. 5798b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// This is used for determining parameter types of other objects and is 5808b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// utterly meaningless on other types of special members. 5818b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class SpecialMemberOverloadResult : public llvm::FastFoldingSetNode { 5828b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project llvm::PointerIntPair<CXXMethodDecl*, 2> Pair; 5838b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project public: 5848b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project SpecialMemberOverloadResult(const llvm::FoldingSetNodeID &ID) 5858b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project : FastFoldingSetNode(ID) 5868b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project {} 5878b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5888b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project CXXMethodDecl *getMethod() const { return Pair.getPointer(); } 5898b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void setMethod(CXXMethodDecl *MD) { Pair.setPointer(MD); } 5908b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5915d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner bool hasSuccess() const { return Pair.getInt() & 0x1; } 5928b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void setSuccess(bool B) { 5938b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project Pair.setInt(unsigned(B) | hasConstParamMatch() << 1); 5948b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 5958b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 5968b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project bool hasConstParamMatch() const { return Pair.getInt() & 0x2; } 5978b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void setConstParamMatch(bool B) { 5988b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project Pair.setInt(B << 1 | unsigned(hasSuccess())); 5998b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 6008b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project }; 6018b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6028b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief A cache of special member function overload resolution results 6038b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// for C++ records. 6048b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project llvm::FoldingSet<SpecialMemberOverloadResult> SpecialMemberCache; 6058b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6068b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The kind of translation unit we are processing. 6078b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// 6088b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// When we're processing a complete translation unit, Sema will perform 6098b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// end-of-translation-unit semantic tasks (such as creating 6108b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// initializers for tentative definitions in C) once parsing has 6118b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// completed. Modules and precompiled headers perform different kinds of 6125d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner /// checks. 6138b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project TranslationUnitKind TUKind; 6148b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6158b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project llvm::BumpPtrAllocator BumpAlloc; 6168b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6178b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief The number of SFINAE diagnostics that have been trapped. 6188b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project unsigned NumSFINAEErrors; 6198b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6208b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project typedef llvm::DenseMap<ParmVarDecl *, SmallVector<ParmVarDecl *, 1> > 6218b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project UnparsedDefaultArgInstantiationsMap; 6228b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6238b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief A mapping from parameters with unparsed default arguments to the 6248b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// set of instantiations of each parameter. 6258b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// 6268b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// This mapping is a temporary data structure used when parsing 6278b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// nested class templates or nested classes of class templates, 6288b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// where we might end up instantiating an inner class before the 6298b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// default arguments of its methods have been parsed. 6308b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project UnparsedDefaultArgInstantiationsMap UnparsedDefaultArgInstantiations; 6318b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6328b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project // Contains the locations of the beginning of unparsed default 6338b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project // argument locations. 6348b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project llvm::DenseMap<ParmVarDecl *,SourceLocation> UnparsedDefaultArgLocs; 6358b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6368b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// UndefinedInternals - all the used, undefined objects with 6378b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// internal linkage in this translation unit. 6388b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project llvm::DenseMap<NamedDecl*, SourceLocation> UndefinedInternals; 6398b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6408b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project typedef std::pair<ObjCMethodList, ObjCMethodList> GlobalMethods; 6418b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project typedef llvm::DenseMap<Selector, GlobalMethods> GlobalMethodPool; 6428b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6438b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// Method Pool - allows efficient lookup when typechecking messages to "id". 6448b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// We need to maintain a list, since selectors can have differing signatures 6458b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// across classes. In Cocoa, this happens to be extremely uncommon (only 1% 6468b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// of selectors are "overloaded"). 6478b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project GlobalMethodPool MethodPool; 6488b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6498b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// Method selectors used in a @selector expression. Used for implementation 6508b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// of -Wselector. 6518b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project llvm::DenseMap<Selector, SourceLocation> ReferencedSelectors; 6528b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6538b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void ReadMethodPool(Selector Sel); 6548b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6558b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// Private Helper predicate to check for 'self'. 6568b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project bool isSelfExpr(Expr *RExpr); 6578b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Projectpublic: 6588b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer, 6598b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project TranslationUnitKind TUKind = TU_Complete, 6608b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project CodeCompleteConsumer *CompletionConsumer = 0); 6618b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ~Sema(); 6628b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6638b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Perform initialization that occurs after the parser has been 6648b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// initialized but before it parses anything. 6658b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void Initialize(); 6668b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6678b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project const LangOptions &getLangOptions() const { return LangOpts; } 6688b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project OpenCLOptions &getOpenCLOptions() { return OpenCLFeatures; } 6698b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project FPOptions &getFPOptions() { return FPFeatures; } 6708b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6718b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project DiagnosticsEngine &getDiagnostics() const { return Diags; } 6728b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project SourceManager &getSourceManager() const { return SourceMgr; } 6738b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project const TargetAttributesSema &getTargetAttributesSema() const; 6748b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project Preprocessor &getPreprocessor() const { return PP; } 6758b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ASTContext &getASTContext() const { return Context; } 6768b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ASTConsumer &getASTConsumer() const { return Consumer; } 6778b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ASTMutationListener *getASTMutationListener() const; 6788b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6798b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void PrintStats() const; 6808b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6818b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Helper class that creates diagnostics with optional 6828b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// template instantiation stacks. 6838b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// 6848b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// This class provides a wrapper around the basic DiagnosticBuilder 6858b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// class that emits diagnostics. SemaDiagnosticBuilder is 6868b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// responsible for emitting the diagnostic (as DiagnosticBuilder 6878b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// does) and, if the diagnostic comes from inside a template 6888b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// instantiation, printing the template instantiation stack as 6898b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// well. 6908b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class SemaDiagnosticBuilder : public DiagnosticBuilder { 6918b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project Sema &SemaRef; 6928b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project unsigned DiagID; 6938b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6948b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project public: 6958b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project SemaDiagnosticBuilder(DiagnosticBuilder &DB, Sema &SemaRef, unsigned DiagID) 6968b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project : DiagnosticBuilder(DB), SemaRef(SemaRef), DiagID(DiagID) { } 6978b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 6988b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project explicit SemaDiagnosticBuilder(Sema &SemaRef) 6998b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project : DiagnosticBuilder(DiagnosticBuilder::Suppress), SemaRef(SemaRef) { } 7008b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 7018b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ~SemaDiagnosticBuilder(); 7028b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project }; 7038b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 7048b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Emit a diagnostic. 7058b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project SemaDiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID); 7068b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 7078b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Emit a partial diagnostic. 7088b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project SemaDiagnosticBuilder Diag(SourceLocation Loc, const PartialDiagnostic& PD); 7098b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 7108b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Build a partial diagnostic. 7118b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project PartialDiagnostic PDiag(unsigned DiagID = 0); // in SemaInternal.h 7128b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 7138b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project bool findMacroSpelling(SourceLocation &loc, StringRef name); 7148b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 7158b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// \brief Get a string to suggest for zero-initialization of a type. 7168b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project const char *getFixItZeroInitializerForType(QualType T) const; 7178b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 7188b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ExprResult Owned(Expr* E) { return E; } 7198b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ExprResult Owned(ExprResult R) { return R; } 7205d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner StmtResult Owned(Stmt* S) { return S; } 7218b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 7228b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void ActOnEndOfTranslationUnit(); 7238b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 7245d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner void CheckDelegatingCtorCycles(); 7258b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 7265d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner Scope *getScopeForContext(DeclContext *Ctx); 7278b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 7285d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner void PushFunctionScope(); 7295d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner void PushBlockScope(Scope *BlockScope, BlockDecl *Block); 7308b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void PushLambdaScope(CXXRecordDecl *Lambda); 7315cb5c0b8c5145dc0002b24e1421a3fa7a697475eDavid 'Digit' Turner void PopFunctionScopeInfo(const sema::AnalysisBasedWarnings::Policy *WP =0, 7325cb5c0b8c5145dc0002b24e1421a3fa7a697475eDavid 'Digit' Turner const Decl *D = 0, const BlockExpr *blkExpr = 0); 7335cb5c0b8c5145dc0002b24e1421a3fa7a697475eDavid 'Digit' Turner 7345cb5c0b8c5145dc0002b24e1421a3fa7a697475eDavid 'Digit' Turner sema::FunctionScopeInfo *getCurFunction() const { 7355cb5c0b8c5145dc0002b24e1421a3fa7a697475eDavid 'Digit' Turner return FunctionScopes.back(); 7365cb5c0b8c5145dc0002b24e1421a3fa7a697475eDavid 'Digit' Turner } 7375cb5c0b8c5145dc0002b24e1421a3fa7a697475eDavid 'Digit' Turner 7388b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project bool hasAnyUnrecoverableErrorsInThisFunction() const; 739 740 /// \brief Retrieve the current block, if any. 741 sema::BlockScopeInfo *getCurBlock(); 742 743 /// \brief Retrieve the current lambda expression, if any. 744 sema::LambdaScopeInfo *getCurLambda(); 745 746 /// WeakTopLevelDeclDecls - access to #pragma weak-generated Decls 747 SmallVector<Decl*,2> &WeakTopLevelDecls() { return WeakTopLevelDecl; } 748 749 //===--------------------------------------------------------------------===// 750 // Type Analysis / Processing: SemaType.cpp. 751 // 752 753 QualType BuildQualifiedType(QualType T, SourceLocation Loc, Qualifiers Qs); 754 QualType BuildQualifiedType(QualType T, SourceLocation Loc, unsigned CVR) { 755 return BuildQualifiedType(T, Loc, Qualifiers::fromCVRMask(CVR)); 756 } 757 QualType BuildPointerType(QualType T, 758 SourceLocation Loc, DeclarationName Entity); 759 QualType BuildReferenceType(QualType T, bool LValueRef, 760 SourceLocation Loc, DeclarationName Entity); 761 QualType BuildArrayType(QualType T, ArrayType::ArraySizeModifier ASM, 762 Expr *ArraySize, unsigned Quals, 763 SourceRange Brackets, DeclarationName Entity); 764 QualType BuildExtVectorType(QualType T, Expr *ArraySize, 765 SourceLocation AttrLoc); 766 QualType BuildFunctionType(QualType T, 767 QualType *ParamTypes, unsigned NumParamTypes, 768 bool Variadic, unsigned Quals, 769 RefQualifierKind RefQualifier, 770 SourceLocation Loc, DeclarationName Entity, 771 FunctionType::ExtInfo Info); 772 QualType BuildMemberPointerType(QualType T, QualType Class, 773 SourceLocation Loc, 774 DeclarationName Entity); 775 QualType BuildBlockPointerType(QualType T, 776 SourceLocation Loc, DeclarationName Entity); 777 QualType BuildParenType(QualType T); 778 QualType BuildAtomicType(QualType T, SourceLocation Loc); 779 780 TypeSourceInfo *GetTypeForDeclarator(Declarator &D, Scope *S); 781 TypeSourceInfo *GetTypeForDeclaratorCast(Declarator &D, QualType FromTy); 782 TypeSourceInfo *GetTypeSourceInfoForDeclarator(Declarator &D, QualType T, 783 TypeSourceInfo *ReturnTypeInfo); 784 /// \brief Package the given type and TSI into a ParsedType. 785 ParsedType CreateParsedType(QualType T, TypeSourceInfo *TInfo); 786 DeclarationNameInfo GetNameForDeclarator(Declarator &D); 787 DeclarationNameInfo GetNameFromUnqualifiedId(const UnqualifiedId &Name); 788 static QualType GetTypeFromParser(ParsedType Ty, TypeSourceInfo **TInfo = 0); 789 bool CheckSpecifiedExceptionType(QualType T, const SourceRange &Range); 790 bool CheckDistantExceptionSpec(QualType T); 791 bool CheckEquivalentExceptionSpec(FunctionDecl *Old, FunctionDecl *New); 792 bool CheckEquivalentExceptionSpec( 793 const FunctionProtoType *Old, SourceLocation OldLoc, 794 const FunctionProtoType *New, SourceLocation NewLoc); 795 bool CheckEquivalentExceptionSpec( 796 const PartialDiagnostic &DiagID, const PartialDiagnostic & NoteID, 797 const FunctionProtoType *Old, SourceLocation OldLoc, 798 const FunctionProtoType *New, SourceLocation NewLoc, 799 bool *MissingExceptionSpecification = 0, 800 bool *MissingEmptyExceptionSpecification = 0, 801 bool AllowNoexceptAllMatchWithNoSpec = false, 802 bool IsOperatorNew = false); 803 bool CheckExceptionSpecSubset( 804 const PartialDiagnostic &DiagID, const PartialDiagnostic & NoteID, 805 const FunctionProtoType *Superset, SourceLocation SuperLoc, 806 const FunctionProtoType *Subset, SourceLocation SubLoc); 807 bool CheckParamExceptionSpec(const PartialDiagnostic & NoteID, 808 const FunctionProtoType *Target, SourceLocation TargetLoc, 809 const FunctionProtoType *Source, SourceLocation SourceLoc); 810 811 TypeResult ActOnTypeName(Scope *S, Declarator &D); 812 813 /// \brief The parser has parsed the context-sensitive type 'instancetype' 814 /// in an Objective-C message declaration. Return the appropriate type. 815 ParsedType ActOnObjCInstanceType(SourceLocation Loc); 816 817 bool RequireCompleteType(SourceLocation Loc, QualType T, 818 const PartialDiagnostic &PD, 819 std::pair<SourceLocation, PartialDiagnostic> Note); 820 bool RequireCompleteType(SourceLocation Loc, QualType T, 821 const PartialDiagnostic &PD); 822 bool RequireCompleteType(SourceLocation Loc, QualType T, 823 unsigned DiagID); 824 bool RequireCompleteExprType(Expr *E, const PartialDiagnostic &PD, 825 std::pair<SourceLocation, 826 PartialDiagnostic> Note); 827 828 bool RequireLiteralType(SourceLocation Loc, QualType T, 829 const PartialDiagnostic &PD, 830 bool AllowIncompleteType = false); 831 832 QualType getElaboratedType(ElaboratedTypeKeyword Keyword, 833 const CXXScopeSpec &SS, QualType T); 834 835 QualType BuildTypeofExprType(Expr *E, SourceLocation Loc); 836 QualType BuildDecltypeType(Expr *E, SourceLocation Loc); 837 QualType BuildUnaryTransformType(QualType BaseType, 838 UnaryTransformType::UTTKind UKind, 839 SourceLocation Loc); 840 841 //===--------------------------------------------------------------------===// 842 // Symbol table / Decl tracking callbacks: SemaDecl.cpp. 843 // 844 845 DeclGroupPtrTy ConvertDeclToDeclGroup(Decl *Ptr, Decl *OwnedType = 0); 846 847 void DiagnoseUseOfUnimplementedSelectors(); 848 849 ParsedType getTypeName(IdentifierInfo &II, SourceLocation NameLoc, 850 Scope *S, CXXScopeSpec *SS = 0, 851 bool isClassName = false, 852 bool HasTrailingDot = false, 853 ParsedType ObjectType = ParsedType(), 854 bool WantNontrivialTypeSourceInfo = false, 855 IdentifierInfo **CorrectedII = 0); 856 TypeSpecifierType isTagName(IdentifierInfo &II, Scope *S); 857 bool isMicrosoftMissingTypename(const CXXScopeSpec *SS, Scope *S); 858 bool DiagnoseUnknownTypeName(const IdentifierInfo &II, 859 SourceLocation IILoc, 860 Scope *S, 861 CXXScopeSpec *SS, 862 ParsedType &SuggestedType); 863 864 /// \brief Describes the result of the name lookup and resolution performed 865 /// by \c ClassifyName(). 866 enum NameClassificationKind { 867 NC_Unknown, 868 NC_Error, 869 NC_Keyword, 870 NC_Type, 871 NC_Expression, 872 NC_NestedNameSpecifier, 873 NC_TypeTemplate, 874 NC_FunctionTemplate 875 }; 876 877 class NameClassification { 878 NameClassificationKind Kind; 879 ExprResult Expr; 880 TemplateName Template; 881 ParsedType Type; 882 const IdentifierInfo *Keyword; 883 884 explicit NameClassification(NameClassificationKind Kind) : Kind(Kind) {} 885 886 public: 887 NameClassification(ExprResult Expr) : Kind(NC_Expression), Expr(Expr) {} 888 889 NameClassification(ParsedType Type) : Kind(NC_Type), Type(Type) {} 890 891 NameClassification(const IdentifierInfo *Keyword) 892 : Kind(NC_Keyword), Keyword(Keyword) { } 893 894 static NameClassification Error() { 895 return NameClassification(NC_Error); 896 } 897 898 static NameClassification Unknown() { 899 return NameClassification(NC_Unknown); 900 } 901 902 static NameClassification NestedNameSpecifier() { 903 return NameClassification(NC_NestedNameSpecifier); 904 } 905 906 static NameClassification TypeTemplate(TemplateName Name) { 907 NameClassification Result(NC_TypeTemplate); 908 Result.Template = Name; 909 return Result; 910 } 911 912 static NameClassification FunctionTemplate(TemplateName Name) { 913 NameClassification Result(NC_FunctionTemplate); 914 Result.Template = Name; 915 return Result; 916 } 917 918 NameClassificationKind getKind() const { return Kind; } 919 920 ParsedType getType() const { 921 assert(Kind == NC_Type); 922 return Type; 923 } 924 925 ExprResult getExpression() const { 926 assert(Kind == NC_Expression); 927 return Expr; 928 } 929 930 TemplateName getTemplateName() const { 931 assert(Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate); 932 return Template; 933 } 934 935 TemplateNameKind getTemplateNameKind() const { 936 assert(Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate); 937 return Kind == NC_TypeTemplate? TNK_Type_template : TNK_Function_template; 938 } 939}; 940 941 /// \brief Perform name lookup on the given name, classifying it based on 942 /// the results of name lookup and the following token. 943 /// 944 /// This routine is used by the parser to resolve identifiers and help direct 945 /// parsing. When the identifier cannot be found, this routine will attempt 946 /// to correct the typo and classify based on the resulting name. 947 /// 948 /// \param S The scope in which we're performing name lookup. 949 /// 950 /// \param SS The nested-name-specifier that precedes the name. 951 /// 952 /// \param Name The identifier. If typo correction finds an alternative name, 953 /// this pointer parameter will be updated accordingly. 954 /// 955 /// \param NameLoc The location of the identifier. 956 /// 957 /// \param NextToken The token following the identifier. Used to help 958 /// disambiguate the name. 959 NameClassification ClassifyName(Scope *S, 960 CXXScopeSpec &SS, 961 IdentifierInfo *&Name, 962 SourceLocation NameLoc, 963 const Token &NextToken); 964 965 Decl *ActOnDeclarator(Scope *S, Declarator &D); 966 967 Decl *HandleDeclarator(Scope *S, Declarator &D, 968 MultiTemplateParamsArg TemplateParameterLists); 969 void RegisterLocallyScopedExternCDecl(NamedDecl *ND, 970 const LookupResult &Previous, 971 Scope *S); 972 bool DiagnoseClassNameShadow(DeclContext *DC, DeclarationNameInfo Info); 973 void DiagnoseFunctionSpecifiers(Declarator& D); 974 void CheckShadow(Scope *S, VarDecl *D, const LookupResult& R); 975 void CheckShadow(Scope *S, VarDecl *D); 976 void CheckCastAlign(Expr *Op, QualType T, SourceRange TRange); 977 void CheckTypedefForVariablyModifiedType(Scope *S, TypedefNameDecl *D); 978 NamedDecl* ActOnTypedefDeclarator(Scope* S, Declarator& D, DeclContext* DC, 979 TypeSourceInfo *TInfo, 980 LookupResult &Previous); 981 NamedDecl* ActOnTypedefNameDecl(Scope* S, DeclContext* DC, TypedefNameDecl *D, 982 LookupResult &Previous, bool &Redeclaration); 983 NamedDecl* ActOnVariableDeclarator(Scope* S, Declarator& D, DeclContext* DC, 984 TypeSourceInfo *TInfo, 985 LookupResult &Previous, 986 MultiTemplateParamsArg TemplateParamLists); 987 // Returns true if the variable declaration is a redeclaration 988 bool CheckVariableDeclaration(VarDecl *NewVD, LookupResult &Previous); 989 void CheckCompleteVariableDeclaration(VarDecl *var); 990 NamedDecl* ActOnFunctionDeclarator(Scope* S, Declarator& D, DeclContext* DC, 991 TypeSourceInfo *TInfo, 992 LookupResult &Previous, 993 MultiTemplateParamsArg TemplateParamLists, 994 bool &AddToScope); 995 bool AddOverriddenMethods(CXXRecordDecl *DC, CXXMethodDecl *MD); 996 997 /// \brief The kind of constexpr declaration checking we are performing. 998 /// 999 /// The kind affects which diagnostics (if any) are emitted if the function 1000 /// does not satisfy the requirements of a constexpr function declaration. 1001 enum CheckConstexprKind { 1002 /// \brief Check a constexpr function declaration, and produce errors if it 1003 /// does not satisfy the requirements. 1004 CCK_Declaration, 1005 /// \brief Check a constexpr function template instantiation. 1006 CCK_Instantiation, 1007 /// \brief Produce notes explaining why an instantiation was not constexpr. 1008 CCK_NoteNonConstexprInstantiation 1009 }; 1010 bool CheckConstexprFunctionDecl(const FunctionDecl *FD, 1011 CheckConstexprKind CCK); 1012 bool CheckConstexprFunctionBody(const FunctionDecl *FD, Stmt *Body); 1013 1014 void DiagnoseHiddenVirtualMethods(CXXRecordDecl *DC, CXXMethodDecl *MD); 1015 // Returns true if the function declaration is a redeclaration 1016 bool CheckFunctionDeclaration(Scope *S, 1017 FunctionDecl *NewFD, LookupResult &Previous, 1018 bool IsExplicitSpecialization); 1019 void CheckMain(FunctionDecl *FD, const DeclSpec &D); 1020 Decl *ActOnParamDeclarator(Scope *S, Declarator &D); 1021 ParmVarDecl *BuildParmVarDeclForTypedef(DeclContext *DC, 1022 SourceLocation Loc, 1023 QualType T); 1024 ParmVarDecl *CheckParameter(DeclContext *DC, SourceLocation StartLoc, 1025 SourceLocation NameLoc, IdentifierInfo *Name, 1026 QualType T, TypeSourceInfo *TSInfo, 1027 StorageClass SC, StorageClass SCAsWritten); 1028 void ActOnParamDefaultArgument(Decl *param, 1029 SourceLocation EqualLoc, 1030 Expr *defarg); 1031 void ActOnParamUnparsedDefaultArgument(Decl *param, 1032 SourceLocation EqualLoc, 1033 SourceLocation ArgLoc); 1034 void ActOnParamDefaultArgumentError(Decl *param); 1035 bool SetParamDefaultArgument(ParmVarDecl *Param, Expr *DefaultArg, 1036 SourceLocation EqualLoc); 1037 1038 void CheckSelfReference(Decl *OrigDecl, Expr *E); 1039 void AddInitializerToDecl(Decl *dcl, Expr *init, bool DirectInit, 1040 bool TypeMayContainAuto); 1041 void ActOnUninitializedDecl(Decl *dcl, bool TypeMayContainAuto); 1042 void ActOnInitializerError(Decl *Dcl); 1043 void ActOnCXXForRangeDecl(Decl *D); 1044 void SetDeclDeleted(Decl *dcl, SourceLocation DelLoc); 1045 void SetDeclDefaulted(Decl *dcl, SourceLocation DefaultLoc); 1046 void FinalizeDeclaration(Decl *D); 1047 DeclGroupPtrTy FinalizeDeclaratorGroup(Scope *S, const DeclSpec &DS, 1048 Decl **Group, 1049 unsigned NumDecls); 1050 DeclGroupPtrTy BuildDeclaratorGroup(Decl **Group, unsigned NumDecls, 1051 bool TypeMayContainAuto = true); 1052 void ActOnFinishKNRParamDeclarations(Scope *S, Declarator &D, 1053 SourceLocation LocAfterDecls); 1054 void CheckForFunctionRedefinition(FunctionDecl *FD); 1055 Decl *ActOnStartOfFunctionDef(Scope *S, Declarator &D); 1056 Decl *ActOnStartOfFunctionDef(Scope *S, Decl *D); 1057 void ActOnStartOfObjCMethodDef(Scope *S, Decl *D); 1058 1059 void computeNRVO(Stmt *Body, sema::FunctionScopeInfo *Scope); 1060 Decl *ActOnFinishFunctionBody(Decl *Decl, Stmt *Body); 1061 Decl *ActOnFinishFunctionBody(Decl *Decl, Stmt *Body, bool IsInstantiation); 1062 1063 /// ActOnFinishDelayedAttribute - Invoked when we have finished parsing an 1064 /// attribute for which parsing is delayed. 1065 void ActOnFinishDelayedAttribute(Scope *S, Decl *D, ParsedAttributes &Attrs); 1066 1067 /// \brief Diagnose any unused parameters in the given sequence of 1068 /// ParmVarDecl pointers. 1069 void DiagnoseUnusedParameters(ParmVarDecl * const *Begin, 1070 ParmVarDecl * const *End); 1071 1072 /// \brief Diagnose whether the size of parameters or return value of a 1073 /// function or obj-c method definition is pass-by-value and larger than a 1074 /// specified threshold. 1075 void DiagnoseSizeOfParametersAndReturnValue(ParmVarDecl * const *Begin, 1076 ParmVarDecl * const *End, 1077 QualType ReturnTy, 1078 NamedDecl *D); 1079 1080 void DiagnoseInvalidJumps(Stmt *Body); 1081 Decl *ActOnFileScopeAsmDecl(Expr *expr, 1082 SourceLocation AsmLoc, 1083 SourceLocation RParenLoc); 1084 1085 /// \brief The parser has processed a module import declaration. 1086 /// 1087 /// \param AtLoc The location of the '@' symbol, if any. 1088 /// 1089 /// \param ImportLoc The location of the 'import' keyword. 1090 /// 1091 /// \param Path The module access path. 1092 DeclResult ActOnModuleImport(SourceLocation AtLoc, SourceLocation ImportLoc, 1093 ModuleIdPath Path); 1094 1095 /// \brief Retrieve a suitable printing policy. 1096 PrintingPolicy getPrintingPolicy() const { 1097 return getPrintingPolicy(Context, PP); 1098 } 1099 1100 /// \brief Retrieve a suitable printing policy. 1101 static PrintingPolicy getPrintingPolicy(const ASTContext &Ctx, 1102 const Preprocessor &PP); 1103 1104 /// Scope actions. 1105 void ActOnPopScope(SourceLocation Loc, Scope *S); 1106 void ActOnTranslationUnitScope(Scope *S); 1107 1108 Decl *ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS, 1109 DeclSpec &DS); 1110 Decl *ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS, 1111 DeclSpec &DS, 1112 MultiTemplateParamsArg TemplateParams); 1113 1114 Decl *BuildAnonymousStructOrUnion(Scope *S, DeclSpec &DS, 1115 AccessSpecifier AS, 1116 RecordDecl *Record); 1117 1118 Decl *BuildMicrosoftCAnonymousStruct(Scope *S, DeclSpec &DS, 1119 RecordDecl *Record); 1120 1121 bool isAcceptableTagRedeclaration(const TagDecl *Previous, 1122 TagTypeKind NewTag, bool isDefinition, 1123 SourceLocation NewTagLoc, 1124 const IdentifierInfo &Name); 1125 1126 enum TagUseKind { 1127 TUK_Reference, // Reference to a tag: 'struct foo *X;' 1128 TUK_Declaration, // Fwd decl of a tag: 'struct foo;' 1129 TUK_Definition, // Definition of a tag: 'struct foo { int X; } Y;' 1130 TUK_Friend // Friend declaration: 'friend struct foo;' 1131 }; 1132 1133 Decl *ActOnTag(Scope *S, unsigned TagSpec, TagUseKind TUK, 1134 SourceLocation KWLoc, CXXScopeSpec &SS, 1135 IdentifierInfo *Name, SourceLocation NameLoc, 1136 AttributeList *Attr, AccessSpecifier AS, 1137 SourceLocation ModulePrivateLoc, 1138 MultiTemplateParamsArg TemplateParameterLists, 1139 bool &OwnedDecl, bool &IsDependent, 1140 SourceLocation ScopedEnumKWLoc, 1141 bool ScopedEnumUsesClassTag, TypeResult UnderlyingType); 1142 1143 Decl *ActOnTemplatedFriendTag(Scope *S, SourceLocation FriendLoc, 1144 unsigned TagSpec, SourceLocation TagLoc, 1145 CXXScopeSpec &SS, 1146 IdentifierInfo *Name, SourceLocation NameLoc, 1147 AttributeList *Attr, 1148 MultiTemplateParamsArg TempParamLists); 1149 1150 TypeResult ActOnDependentTag(Scope *S, 1151 unsigned TagSpec, 1152 TagUseKind TUK, 1153 const CXXScopeSpec &SS, 1154 IdentifierInfo *Name, 1155 SourceLocation TagLoc, 1156 SourceLocation NameLoc); 1157 1158 void ActOnDefs(Scope *S, Decl *TagD, SourceLocation DeclStart, 1159 IdentifierInfo *ClassName, 1160 SmallVectorImpl<Decl *> &Decls); 1161 Decl *ActOnField(Scope *S, Decl *TagD, SourceLocation DeclStart, 1162 Declarator &D, Expr *BitfieldWidth); 1163 1164 FieldDecl *HandleField(Scope *S, RecordDecl *TagD, SourceLocation DeclStart, 1165 Declarator &D, Expr *BitfieldWidth, bool HasInit, 1166 AccessSpecifier AS); 1167 1168 FieldDecl *CheckFieldDecl(DeclarationName Name, QualType T, 1169 TypeSourceInfo *TInfo, 1170 RecordDecl *Record, SourceLocation Loc, 1171 bool Mutable, Expr *BitfieldWidth, bool HasInit, 1172 SourceLocation TSSL, 1173 AccessSpecifier AS, NamedDecl *PrevDecl, 1174 Declarator *D = 0); 1175 1176 enum CXXSpecialMember { 1177 CXXDefaultConstructor, 1178 CXXCopyConstructor, 1179 CXXMoveConstructor, 1180 CXXCopyAssignment, 1181 CXXMoveAssignment, 1182 CXXDestructor, 1183 CXXInvalid 1184 }; 1185 bool CheckNontrivialField(FieldDecl *FD); 1186 void DiagnoseNontrivial(const RecordType* Record, CXXSpecialMember mem); 1187 CXXSpecialMember getSpecialMember(const CXXMethodDecl *MD); 1188 void ActOnLastBitfield(SourceLocation DeclStart, 1189 SmallVectorImpl<Decl *> &AllIvarDecls); 1190 Decl *ActOnIvar(Scope *S, SourceLocation DeclStart, 1191 Declarator &D, Expr *BitfieldWidth, 1192 tok::ObjCKeywordKind visibility); 1193 1194 // This is used for both record definitions and ObjC interface declarations. 1195 void ActOnFields(Scope* S, SourceLocation RecLoc, Decl *TagDecl, 1196 llvm::ArrayRef<Decl *> Fields, 1197 SourceLocation LBrac, SourceLocation RBrac, 1198 AttributeList *AttrList); 1199 1200 /// ActOnTagStartDefinition - Invoked when we have entered the 1201 /// scope of a tag's definition (e.g., for an enumeration, class, 1202 /// struct, or union). 1203 void ActOnTagStartDefinition(Scope *S, Decl *TagDecl); 1204 1205 Decl *ActOnObjCContainerStartDefinition(Decl *IDecl); 1206 1207 /// ActOnStartCXXMemberDeclarations - Invoked when we have parsed a 1208 /// C++ record definition's base-specifiers clause and are starting its 1209 /// member declarations. 1210 void ActOnStartCXXMemberDeclarations(Scope *S, Decl *TagDecl, 1211 SourceLocation FinalLoc, 1212 SourceLocation LBraceLoc); 1213 1214 /// ActOnTagFinishDefinition - Invoked once we have finished parsing 1215 /// the definition of a tag (enumeration, class, struct, or union). 1216 void ActOnTagFinishDefinition(Scope *S, Decl *TagDecl, 1217 SourceLocation RBraceLoc); 1218 1219 void ActOnObjCContainerFinishDefinition(); 1220 1221 /// \brief Invoked when we must temporarily exit the objective-c container 1222 /// scope for parsing/looking-up C constructs. 1223 /// 1224 /// Must be followed by a call to \see ActOnObjCReenterContainerContext 1225 void ActOnObjCTemporaryExitContainerContext(DeclContext *DC); 1226 void ActOnObjCReenterContainerContext(DeclContext *DC); 1227 1228 /// ActOnTagDefinitionError - Invoked when there was an unrecoverable 1229 /// error parsing the definition of a tag. 1230 void ActOnTagDefinitionError(Scope *S, Decl *TagDecl); 1231 1232 EnumConstantDecl *CheckEnumConstant(EnumDecl *Enum, 1233 EnumConstantDecl *LastEnumConst, 1234 SourceLocation IdLoc, 1235 IdentifierInfo *Id, 1236 Expr *val); 1237 1238 Decl *ActOnEnumConstant(Scope *S, Decl *EnumDecl, Decl *LastEnumConstant, 1239 SourceLocation IdLoc, IdentifierInfo *Id, 1240 AttributeList *Attrs, 1241 SourceLocation EqualLoc, Expr *Val); 1242 void ActOnEnumBody(SourceLocation EnumLoc, SourceLocation LBraceLoc, 1243 SourceLocation RBraceLoc, Decl *EnumDecl, 1244 Decl **Elements, unsigned NumElements, 1245 Scope *S, AttributeList *Attr); 1246 1247 DeclContext *getContainingDC(DeclContext *DC); 1248 1249 /// Set the current declaration context until it gets popped. 1250 void PushDeclContext(Scope *S, DeclContext *DC); 1251 void PopDeclContext(); 1252 1253 /// EnterDeclaratorContext - Used when we must lookup names in the context 1254 /// of a declarator's nested name specifier. 1255 void EnterDeclaratorContext(Scope *S, DeclContext *DC); 1256 void ExitDeclaratorContext(Scope *S); 1257 1258 /// Push the parameters of D, which must be a function, into scope. 1259 void ActOnReenterFunctionContext(Scope* S, Decl* D); 1260 void ActOnExitFunctionContext() { PopDeclContext(); } 1261 1262 DeclContext *getFunctionLevelDeclContext(); 1263 1264 /// getCurFunctionDecl - If inside of a function body, this returns a pointer 1265 /// to the function decl for the function being parsed. If we're currently 1266 /// in a 'block', this returns the containing context. 1267 FunctionDecl *getCurFunctionDecl(); 1268 1269 /// getCurMethodDecl - If inside of a method body, this returns a pointer to 1270 /// the method decl for the method being parsed. If we're currently 1271 /// in a 'block', this returns the containing context. 1272 ObjCMethodDecl *getCurMethodDecl(); 1273 1274 /// getCurFunctionOrMethodDecl - Return the Decl for the current ObjC method 1275 /// or C function we're in, otherwise return null. If we're currently 1276 /// in a 'block', this returns the containing context. 1277 NamedDecl *getCurFunctionOrMethodDecl(); 1278 1279 /// Add this decl to the scope shadowed decl chains. 1280 void PushOnScopeChains(NamedDecl *D, Scope *S, bool AddToContext = true); 1281 1282 /// \brief Make the given externally-produced declaration visible at the 1283 /// top level scope. 1284 /// 1285 /// \param D The externally-produced declaration to push. 1286 /// 1287 /// \param Name The name of the externally-produced declaration. 1288 void pushExternalDeclIntoScope(NamedDecl *D, DeclarationName Name); 1289 1290 /// isDeclInScope - If 'Ctx' is a function/method, isDeclInScope returns true 1291 /// if 'D' is in Scope 'S', otherwise 'S' is ignored and isDeclInScope returns 1292 /// true if 'D' belongs to the given declaration context. 1293 /// 1294 /// \param ExplicitInstantiationOrSpecialization When true, we are checking 1295 /// whether the declaration is in scope for the purposes of explicit template 1296 /// instantiation or specialization. The default is false. 1297 bool isDeclInScope(NamedDecl *&D, DeclContext *Ctx, Scope *S = 0, 1298 bool ExplicitInstantiationOrSpecialization = false); 1299 1300 /// Finds the scope corresponding to the given decl context, if it 1301 /// happens to be an enclosing scope. Otherwise return NULL. 1302 static Scope *getScopeForDeclContext(Scope *S, DeclContext *DC); 1303 1304 /// Subroutines of ActOnDeclarator(). 1305 TypedefDecl *ParseTypedefDecl(Scope *S, Declarator &D, QualType T, 1306 TypeSourceInfo *TInfo); 1307 bool isIncompatibleTypedef(TypeDecl *Old, TypedefNameDecl *New); 1308 void mergeDeclAttributes(Decl *New, Decl *Old, bool MergeDeprecation = true); 1309 void MergeTypedefNameDecl(TypedefNameDecl *New, LookupResult &OldDecls); 1310 bool MergeFunctionDecl(FunctionDecl *New, Decl *Old); 1311 bool MergeCompatibleFunctionDecls(FunctionDecl *New, FunctionDecl *Old); 1312 void mergeObjCMethodDecls(ObjCMethodDecl *New, ObjCMethodDecl *Old); 1313 void MergeVarDecl(VarDecl *New, LookupResult &OldDecls); 1314 void MergeVarDeclTypes(VarDecl *New, VarDecl *Old); 1315 void MergeVarDeclExceptionSpecs(VarDecl *New, VarDecl *Old); 1316 bool MergeCXXFunctionDecl(FunctionDecl *New, FunctionDecl *Old); 1317 1318 // AssignmentAction - This is used by all the assignment diagnostic functions 1319 // to represent what is actually causing the operation 1320 enum AssignmentAction { 1321 AA_Assigning, 1322 AA_Passing, 1323 AA_Returning, 1324 AA_Converting, 1325 AA_Initializing, 1326 AA_Sending, 1327 AA_Casting 1328 }; 1329 1330 /// C++ Overloading. 1331 enum OverloadKind { 1332 /// This is a legitimate overload: the existing declarations are 1333 /// functions or function templates with different signatures. 1334 Ovl_Overload, 1335 1336 /// This is not an overload because the signature exactly matches 1337 /// an existing declaration. 1338 Ovl_Match, 1339 1340 /// This is not an overload because the lookup results contain a 1341 /// non-function. 1342 Ovl_NonFunction 1343 }; 1344 OverloadKind CheckOverload(Scope *S, 1345 FunctionDecl *New, 1346 const LookupResult &OldDecls, 1347 NamedDecl *&OldDecl, 1348 bool IsForUsingDecl); 1349 bool IsOverload(FunctionDecl *New, FunctionDecl *Old, bool IsForUsingDecl); 1350 1351 /// \brief Checks availability of the function depending on the current 1352 /// function context.Inside an unavailable function,unavailability is ignored. 1353 /// 1354 /// \returns true if \arg FD is unavailable and current context is inside 1355 /// an available function, false otherwise. 1356 bool isFunctionConsideredUnavailable(FunctionDecl *FD); 1357 1358 ImplicitConversionSequence 1359 TryImplicitConversion(Expr *From, QualType ToType, 1360 bool SuppressUserConversions, 1361 bool AllowExplicit, 1362 bool InOverloadResolution, 1363 bool CStyle, 1364 bool AllowObjCWritebackConversion); 1365 1366 bool IsIntegralPromotion(Expr *From, QualType FromType, QualType ToType); 1367 bool IsFloatingPointPromotion(QualType FromType, QualType ToType); 1368 bool IsComplexPromotion(QualType FromType, QualType ToType); 1369 bool IsPointerConversion(Expr *From, QualType FromType, QualType ToType, 1370 bool InOverloadResolution, 1371 QualType& ConvertedType, bool &IncompatibleObjC); 1372 bool isObjCPointerConversion(QualType FromType, QualType ToType, 1373 QualType& ConvertedType, bool &IncompatibleObjC); 1374 bool isObjCWritebackConversion(QualType FromType, QualType ToType, 1375 QualType &ConvertedType); 1376 bool IsBlockPointerConversion(QualType FromType, QualType ToType, 1377 QualType& ConvertedType); 1378 bool isSentinelNullExpr(const Expr *E) const; 1379 bool FunctionArgTypesAreEqual(const FunctionProtoType *OldType, 1380 const FunctionProtoType *NewType, 1381 unsigned *ArgPos = 0); 1382 void HandleFunctionTypeMismatch(PartialDiagnostic &PDiag, 1383 QualType FromType, QualType ToType); 1384 1385 CastKind PrepareCastToObjCObjectPointer(ExprResult &E); 1386 bool CheckPointerConversion(Expr *From, QualType ToType, 1387 CastKind &Kind, 1388 CXXCastPath& BasePath, 1389 bool IgnoreBaseAccess); 1390 bool IsMemberPointerConversion(Expr *From, QualType FromType, QualType ToType, 1391 bool InOverloadResolution, 1392 QualType &ConvertedType); 1393 bool CheckMemberPointerConversion(Expr *From, QualType ToType, 1394 CastKind &Kind, 1395 CXXCastPath &BasePath, 1396 bool IgnoreBaseAccess); 1397 bool IsQualificationConversion(QualType FromType, QualType ToType, 1398 bool CStyle, bool &ObjCLifetimeConversion); 1399 bool IsNoReturnConversion(QualType FromType, QualType ToType, 1400 QualType &ResultTy); 1401 bool DiagnoseMultipleUserDefinedConversion(Expr *From, QualType ToType); 1402 1403 1404 ExprResult PerformMoveOrCopyInitialization(const InitializedEntity &Entity, 1405 const VarDecl *NRVOCandidate, 1406 QualType ResultType, 1407 Expr *Value, 1408 bool AllowNRVO = true); 1409 1410 bool CanPerformCopyInitialization(const InitializedEntity &Entity, 1411 ExprResult Init); 1412 ExprResult PerformCopyInitialization(const InitializedEntity &Entity, 1413 SourceLocation EqualLoc, 1414 ExprResult Init, 1415 bool TopLevelOfInitList = false); 1416 ExprResult PerformObjectArgumentInitialization(Expr *From, 1417 NestedNameSpecifier *Qualifier, 1418 NamedDecl *FoundDecl, 1419 CXXMethodDecl *Method); 1420 1421 ExprResult PerformContextuallyConvertToBool(Expr *From); 1422 ExprResult PerformContextuallyConvertToObjCPointer(Expr *From); 1423 1424 /// Contexts in which a converted constant expression is required. 1425 enum CCEKind { 1426 CCEK_CaseValue, ///< Expression in a case label. 1427 CCEK_Enumerator, ///< Enumerator value with fixed underlying type. 1428 CCEK_TemplateArg ///< Value of a non-type template parameter. 1429 }; 1430 ExprResult CheckConvertedConstantExpression(Expr *From, QualType T, 1431 llvm::APSInt &Value, CCEKind CCE); 1432 1433 ExprResult 1434 ConvertToIntegralOrEnumerationType(SourceLocation Loc, Expr *FromE, 1435 const PartialDiagnostic &NotIntDiag, 1436 const PartialDiagnostic &IncompleteDiag, 1437 const PartialDiagnostic &ExplicitConvDiag, 1438 const PartialDiagnostic &ExplicitConvNote, 1439 const PartialDiagnostic &AmbigDiag, 1440 const PartialDiagnostic &AmbigNote, 1441 const PartialDiagnostic &ConvDiag); 1442 1443 ExprResult PerformObjectMemberConversion(Expr *From, 1444 NestedNameSpecifier *Qualifier, 1445 NamedDecl *FoundDecl, 1446 NamedDecl *Member); 1447 1448 // Members have to be NamespaceDecl* or TranslationUnitDecl*. 1449 // TODO: make this is a typesafe union. 1450 typedef llvm::SmallPtrSet<DeclContext *, 16> AssociatedNamespaceSet; 1451 typedef llvm::SmallPtrSet<CXXRecordDecl *, 16> AssociatedClassSet; 1452 1453 void AddOverloadCandidate(NamedDecl *Function, 1454 DeclAccessPair FoundDecl, 1455 Expr **Args, unsigned NumArgs, 1456 OverloadCandidateSet &CandidateSet); 1457 1458 void AddOverloadCandidate(FunctionDecl *Function, 1459 DeclAccessPair FoundDecl, 1460 Expr **Args, unsigned NumArgs, 1461 OverloadCandidateSet& CandidateSet, 1462 bool SuppressUserConversions = false, 1463 bool PartialOverloading = false); 1464 void AddFunctionCandidates(const UnresolvedSetImpl &Functions, 1465 Expr **Args, unsigned NumArgs, 1466 OverloadCandidateSet& CandidateSet, 1467 bool SuppressUserConversions = false); 1468 void AddMethodCandidate(DeclAccessPair FoundDecl, 1469 QualType ObjectType, 1470 Expr::Classification ObjectClassification, 1471 Expr **Args, unsigned NumArgs, 1472 OverloadCandidateSet& CandidateSet, 1473 bool SuppressUserConversion = false); 1474 void AddMethodCandidate(CXXMethodDecl *Method, 1475 DeclAccessPair FoundDecl, 1476 CXXRecordDecl *ActingContext, QualType ObjectType, 1477 Expr::Classification ObjectClassification, 1478 Expr **Args, unsigned NumArgs, 1479 OverloadCandidateSet& CandidateSet, 1480 bool SuppressUserConversions = false); 1481 void AddMethodTemplateCandidate(FunctionTemplateDecl *MethodTmpl, 1482 DeclAccessPair FoundDecl, 1483 CXXRecordDecl *ActingContext, 1484 TemplateArgumentListInfo *ExplicitTemplateArgs, 1485 QualType ObjectType, 1486 Expr::Classification ObjectClassification, 1487 Expr **Args, unsigned NumArgs, 1488 OverloadCandidateSet& CandidateSet, 1489 bool SuppressUserConversions = false); 1490 void AddTemplateOverloadCandidate(FunctionTemplateDecl *FunctionTemplate, 1491 DeclAccessPair FoundDecl, 1492 TemplateArgumentListInfo *ExplicitTemplateArgs, 1493 Expr **Args, unsigned NumArgs, 1494 OverloadCandidateSet& CandidateSet, 1495 bool SuppressUserConversions = false); 1496 void AddConversionCandidate(CXXConversionDecl *Conversion, 1497 DeclAccessPair FoundDecl, 1498 CXXRecordDecl *ActingContext, 1499 Expr *From, QualType ToType, 1500 OverloadCandidateSet& CandidateSet); 1501 void AddTemplateConversionCandidate(FunctionTemplateDecl *FunctionTemplate, 1502 DeclAccessPair FoundDecl, 1503 CXXRecordDecl *ActingContext, 1504 Expr *From, QualType ToType, 1505 OverloadCandidateSet &CandidateSet); 1506 void AddSurrogateCandidate(CXXConversionDecl *Conversion, 1507 DeclAccessPair FoundDecl, 1508 CXXRecordDecl *ActingContext, 1509 const FunctionProtoType *Proto, 1510 Expr *Object, Expr **Args, unsigned NumArgs, 1511 OverloadCandidateSet& CandidateSet); 1512 void AddMemberOperatorCandidates(OverloadedOperatorKind Op, 1513 SourceLocation OpLoc, 1514 Expr **Args, unsigned NumArgs, 1515 OverloadCandidateSet& CandidateSet, 1516 SourceRange OpRange = SourceRange()); 1517 void AddBuiltinCandidate(QualType ResultTy, QualType *ParamTys, 1518 Expr **Args, unsigned NumArgs, 1519 OverloadCandidateSet& CandidateSet, 1520 bool IsAssignmentOperator = false, 1521 unsigned NumContextualBoolArguments = 0); 1522 void AddBuiltinOperatorCandidates(OverloadedOperatorKind Op, 1523 SourceLocation OpLoc, 1524 Expr **Args, unsigned NumArgs, 1525 OverloadCandidateSet& CandidateSet); 1526 void AddArgumentDependentLookupCandidates(DeclarationName Name, 1527 bool Operator, 1528 Expr **Args, unsigned NumArgs, 1529 TemplateArgumentListInfo *ExplicitTemplateArgs, 1530 OverloadCandidateSet& CandidateSet, 1531 bool PartialOverloading = false, 1532 bool StdNamespaceIsAssociated = false); 1533 1534 // Emit as a 'note' the specific overload candidate 1535 void NoteOverloadCandidate(FunctionDecl *Fn, QualType DestType = QualType()); 1536 1537 // Emit as a series of 'note's all template and non-templates 1538 // identified by the expression Expr 1539 void NoteAllOverloadCandidates(Expr* E, QualType DestType = QualType()); 1540 1541 // [PossiblyAFunctionType] --> [Return] 1542 // NonFunctionType --> NonFunctionType 1543 // R (A) --> R(A) 1544 // R (*)(A) --> R (A) 1545 // R (&)(A) --> R (A) 1546 // R (S::*)(A) --> R (A) 1547 QualType ExtractUnqualifiedFunctionType(QualType PossiblyAFunctionType); 1548 1549 FunctionDecl * 1550 ResolveAddressOfOverloadedFunction(Expr *AddressOfExpr, 1551 QualType TargetType, 1552 bool Complain, 1553 DeclAccessPair &Found, 1554 bool *pHadMultipleCandidates = 0); 1555 1556 FunctionDecl *ResolveSingleFunctionTemplateSpecialization(OverloadExpr *ovl, 1557 bool Complain = false, 1558 DeclAccessPair* Found = 0); 1559 1560 bool ResolveAndFixSingleFunctionTemplateSpecialization( 1561 ExprResult &SrcExpr, 1562 bool DoFunctionPointerConverion = false, 1563 bool Complain = false, 1564 const SourceRange& OpRangeForComplaining = SourceRange(), 1565 QualType DestTypeForComplaining = QualType(), 1566 unsigned DiagIDForComplaining = 0); 1567 1568 1569 Expr *FixOverloadedFunctionReference(Expr *E, 1570 DeclAccessPair FoundDecl, 1571 FunctionDecl *Fn); 1572 ExprResult FixOverloadedFunctionReference(ExprResult, 1573 DeclAccessPair FoundDecl, 1574 FunctionDecl *Fn); 1575 1576 void AddOverloadedCallCandidates(UnresolvedLookupExpr *ULE, 1577 Expr **Args, unsigned NumArgs, 1578 OverloadCandidateSet &CandidateSet, 1579 bool PartialOverloading = false); 1580 1581 ExprResult BuildOverloadedCallExpr(Scope *S, Expr *Fn, 1582 UnresolvedLookupExpr *ULE, 1583 SourceLocation LParenLoc, 1584 Expr **Args, unsigned NumArgs, 1585 SourceLocation RParenLoc, 1586 Expr *ExecConfig, 1587 bool AllowTypoCorrection=true); 1588 1589 ExprResult CreateOverloadedUnaryOp(SourceLocation OpLoc, 1590 unsigned Opc, 1591 const UnresolvedSetImpl &Fns, 1592 Expr *input); 1593 1594 ExprResult CreateOverloadedBinOp(SourceLocation OpLoc, 1595 unsigned Opc, 1596 const UnresolvedSetImpl &Fns, 1597 Expr *LHS, Expr *RHS); 1598 1599 ExprResult CreateOverloadedArraySubscriptExpr(SourceLocation LLoc, 1600 SourceLocation RLoc, 1601 Expr *Base,Expr *Idx); 1602 1603 ExprResult 1604 BuildCallToMemberFunction(Scope *S, Expr *MemExpr, 1605 SourceLocation LParenLoc, Expr **Args, 1606 unsigned NumArgs, SourceLocation RParenLoc); 1607 ExprResult 1608 BuildCallToObjectOfClassType(Scope *S, Expr *Object, SourceLocation LParenLoc, 1609 Expr **Args, unsigned NumArgs, 1610 SourceLocation RParenLoc); 1611 1612 ExprResult BuildOverloadedArrowExpr(Scope *S, Expr *Base, 1613 SourceLocation OpLoc); 1614 1615 /// CheckCallReturnType - Checks that a call expression's return type is 1616 /// complete. Returns true on failure. The location passed in is the location 1617 /// that best represents the call. 1618 bool CheckCallReturnType(QualType ReturnType, SourceLocation Loc, 1619 CallExpr *CE, FunctionDecl *FD); 1620 1621 /// Helpers for dealing with blocks and functions. 1622 bool CheckParmsForFunctionDef(ParmVarDecl **Param, ParmVarDecl **ParamEnd, 1623 bool CheckParameterNames); 1624 void CheckCXXDefaultArguments(FunctionDecl *FD); 1625 void CheckExtraCXXDefaultArguments(Declarator &D); 1626 Scope *getNonFieldDeclScope(Scope *S); 1627 1628 /// \name Name lookup 1629 /// 1630 /// These routines provide name lookup that is used during semantic 1631 /// analysis to resolve the various kinds of names (identifiers, 1632 /// overloaded operator names, constructor names, etc.) into zero or 1633 /// more declarations within a particular scope. The major entry 1634 /// points are LookupName, which performs unqualified name lookup, 1635 /// and LookupQualifiedName, which performs qualified name lookup. 1636 /// 1637 /// All name lookup is performed based on some specific criteria, 1638 /// which specify what names will be visible to name lookup and how 1639 /// far name lookup should work. These criteria are important both 1640 /// for capturing language semantics (certain lookups will ignore 1641 /// certain names, for example) and for performance, since name 1642 /// lookup is often a bottleneck in the compilation of C++. Name 1643 /// lookup criteria is specified via the LookupCriteria enumeration. 1644 /// 1645 /// The results of name lookup can vary based on the kind of name 1646 /// lookup performed, the current language, and the translation 1647 /// unit. In C, for example, name lookup will either return nothing 1648 /// (no entity found) or a single declaration. In C++, name lookup 1649 /// can additionally refer to a set of overloaded functions or 1650 /// result in an ambiguity. All of the possible results of name 1651 /// lookup are captured by the LookupResult class, which provides 1652 /// the ability to distinguish among them. 1653 //@{ 1654 1655 /// @brief Describes the kind of name lookup to perform. 1656 enum LookupNameKind { 1657 /// Ordinary name lookup, which finds ordinary names (functions, 1658 /// variables, typedefs, etc.) in C and most kinds of names 1659 /// (functions, variables, members, types, etc.) in C++. 1660 LookupOrdinaryName = 0, 1661 /// Tag name lookup, which finds the names of enums, classes, 1662 /// structs, and unions. 1663 LookupTagName, 1664 /// Label name lookup. 1665 LookupLabel, 1666 /// Member name lookup, which finds the names of 1667 /// class/struct/union members. 1668 LookupMemberName, 1669 /// Look up of an operator name (e.g., operator+) for use with 1670 /// operator overloading. This lookup is similar to ordinary name 1671 /// lookup, but will ignore any declarations that are class members. 1672 LookupOperatorName, 1673 /// Look up of a name that precedes the '::' scope resolution 1674 /// operator in C++. This lookup completely ignores operator, object, 1675 /// function, and enumerator names (C++ [basic.lookup.qual]p1). 1676 LookupNestedNameSpecifierName, 1677 /// Look up a namespace name within a C++ using directive or 1678 /// namespace alias definition, ignoring non-namespace names (C++ 1679 /// [basic.lookup.udir]p1). 1680 LookupNamespaceName, 1681 /// Look up all declarations in a scope with the given name, 1682 /// including resolved using declarations. This is appropriate 1683 /// for checking redeclarations for a using declaration. 1684 LookupUsingDeclName, 1685 /// Look up an ordinary name that is going to be redeclared as a 1686 /// name with linkage. This lookup ignores any declarations that 1687 /// are outside of the current scope unless they have linkage. See 1688 /// C99 6.2.2p4-5 and C++ [basic.link]p6. 1689 LookupRedeclarationWithLinkage, 1690 /// Look up the name of an Objective-C protocol. 1691 LookupObjCProtocolName, 1692 /// Look up implicit 'self' parameter of an objective-c method. 1693 LookupObjCImplicitSelfParam, 1694 /// \brief Look up any declaration with any name. 1695 LookupAnyName 1696 }; 1697 1698 /// \brief Specifies whether (or how) name lookup is being performed for a 1699 /// redeclaration (vs. a reference). 1700 enum RedeclarationKind { 1701 /// \brief The lookup is a reference to this name that is not for the 1702 /// purpose of redeclaring the name. 1703 NotForRedeclaration = 0, 1704 /// \brief The lookup results will be used for redeclaration of a name, 1705 /// if an entity by that name already exists. 1706 ForRedeclaration 1707 }; 1708 1709private: 1710 bool CppLookupName(LookupResult &R, Scope *S); 1711 1712 SpecialMemberOverloadResult *LookupSpecialMember(CXXRecordDecl *D, 1713 CXXSpecialMember SM, 1714 bool ConstArg, 1715 bool VolatileArg, 1716 bool RValueThis, 1717 bool ConstThis, 1718 bool VolatileThis); 1719 1720 // \brief The set of known/encountered (unique, canonicalized) NamespaceDecls. 1721 // 1722 // The boolean value will be true to indicate that the namespace was loaded 1723 // from an AST/PCH file, or false otherwise. 1724 llvm::DenseMap<NamespaceDecl*, bool> KnownNamespaces; 1725 1726 /// \brief Whether we have already loaded known namespaces from an extenal 1727 /// source. 1728 bool LoadedExternalKnownNamespaces; 1729 1730public: 1731 /// \brief Look up a name, looking for a single declaration. Return 1732 /// null if the results were absent, ambiguous, or overloaded. 1733 /// 1734 /// It is preferable to use the elaborated form and explicitly handle 1735 /// ambiguity and overloaded. 1736 NamedDecl *LookupSingleName(Scope *S, DeclarationName Name, 1737 SourceLocation Loc, 1738 LookupNameKind NameKind, 1739 RedeclarationKind Redecl 1740 = NotForRedeclaration); 1741 bool LookupName(LookupResult &R, Scope *S, 1742 bool AllowBuiltinCreation = false); 1743 bool LookupQualifiedName(LookupResult &R, DeclContext *LookupCtx, 1744 bool InUnqualifiedLookup = false); 1745 bool LookupParsedName(LookupResult &R, Scope *S, CXXScopeSpec *SS, 1746 bool AllowBuiltinCreation = false, 1747 bool EnteringContext = false); 1748 ObjCProtocolDecl *LookupProtocol(IdentifierInfo *II, SourceLocation IdLoc, 1749 RedeclarationKind Redecl 1750 = NotForRedeclaration); 1751 1752 void LookupOverloadedOperatorName(OverloadedOperatorKind Op, Scope *S, 1753 QualType T1, QualType T2, 1754 UnresolvedSetImpl &Functions); 1755 1756 LabelDecl *LookupOrCreateLabel(IdentifierInfo *II, SourceLocation IdentLoc, 1757 SourceLocation GnuLabelLoc = SourceLocation()); 1758 1759 DeclContextLookupResult LookupConstructors(CXXRecordDecl *Class); 1760 CXXConstructorDecl *LookupDefaultConstructor(CXXRecordDecl *Class); 1761 CXXConstructorDecl *LookupCopyingConstructor(CXXRecordDecl *Class, 1762 unsigned Quals, 1763 bool *ConstParam = 0); 1764 CXXMethodDecl *LookupCopyingAssignment(CXXRecordDecl *Class, unsigned Quals, 1765 bool RValueThis, unsigned ThisQuals, 1766 bool *ConstParam = 0); 1767 CXXConstructorDecl *LookupMovingConstructor(CXXRecordDecl *Class); 1768 CXXMethodDecl *LookupMovingAssignment(CXXRecordDecl *Class, bool RValueThis, 1769 unsigned ThisQuals); 1770 CXXDestructorDecl *LookupDestructor(CXXRecordDecl *Class); 1771 1772 void ArgumentDependentLookup(DeclarationName Name, bool Operator, 1773 Expr **Args, unsigned NumArgs, 1774 ADLResult &Functions, 1775 bool StdNamespaceIsAssociated = false); 1776 1777 void LookupVisibleDecls(Scope *S, LookupNameKind Kind, 1778 VisibleDeclConsumer &Consumer, 1779 bool IncludeGlobalScope = true); 1780 void LookupVisibleDecls(DeclContext *Ctx, LookupNameKind Kind, 1781 VisibleDeclConsumer &Consumer, 1782 bool IncludeGlobalScope = true); 1783 1784 TypoCorrection CorrectTypo(const DeclarationNameInfo &Typo, 1785 Sema::LookupNameKind LookupKind, 1786 Scope *S, CXXScopeSpec *SS, 1787 CorrectionCandidateCallback *CCC, 1788 DeclContext *MemberContext = 0, 1789 bool EnteringContext = false, 1790 const ObjCObjectPointerType *OPT = 0); 1791 1792 void FindAssociatedClassesAndNamespaces(Expr **Args, unsigned NumArgs, 1793 AssociatedNamespaceSet &AssociatedNamespaces, 1794 AssociatedClassSet &AssociatedClasses); 1795 1796 void FilterLookupForScope(LookupResult &R, DeclContext *Ctx, Scope *S, 1797 bool ConsiderLinkage, 1798 bool ExplicitInstantiationOrSpecialization); 1799 1800 bool DiagnoseAmbiguousLookup(LookupResult &Result); 1801 //@} 1802 1803 ObjCInterfaceDecl *getObjCInterfaceDecl(IdentifierInfo *&Id, 1804 SourceLocation IdLoc, 1805 bool TypoCorrection = false); 1806 NamedDecl *LazilyCreateBuiltin(IdentifierInfo *II, unsigned ID, 1807 Scope *S, bool ForRedeclaration, 1808 SourceLocation Loc); 1809 NamedDecl *ImplicitlyDefineFunction(SourceLocation Loc, IdentifierInfo &II, 1810 Scope *S); 1811 void AddKnownFunctionAttributes(FunctionDecl *FD); 1812 1813 // More parsing and symbol table subroutines. 1814 1815 // Decl attributes - this routine is the top level dispatcher. 1816 void ProcessDeclAttributes(Scope *S, Decl *D, const Declarator &PD, 1817 bool NonInheritable = true, bool Inheritable = true); 1818 void ProcessDeclAttributeList(Scope *S, Decl *D, const AttributeList *AL, 1819 bool NonInheritable = true, bool Inheritable = true); 1820 bool ProcessAccessDeclAttributeList(AccessSpecDecl *ASDecl, 1821 const AttributeList *AttrList); 1822 1823 void checkUnusedDeclAttributes(Declarator &D); 1824 1825 bool CheckRegparmAttr(const AttributeList &attr, unsigned &value); 1826 bool CheckCallingConvAttr(const AttributeList &attr, CallingConv &CC); 1827 bool CheckNoReturnAttr(const AttributeList &attr); 1828 1829 void WarnUndefinedMethod(SourceLocation ImpLoc, ObjCMethodDecl *method, 1830 bool &IncompleteImpl, unsigned DiagID); 1831 void WarnConflictingTypedMethods(ObjCMethodDecl *Method, 1832 ObjCMethodDecl *MethodDecl, 1833 bool IsProtocolMethodDecl); 1834 1835 void CheckConflictingOverridingMethod(ObjCMethodDecl *Method, 1836 ObjCMethodDecl *Overridden, 1837 bool IsProtocolMethodDecl); 1838 1839 /// WarnExactTypedMethods - This routine issues a warning if method 1840 /// implementation declaration matches exactly that of its declaration. 1841 void WarnExactTypedMethods(ObjCMethodDecl *Method, 1842 ObjCMethodDecl *MethodDecl, 1843 bool IsProtocolMethodDecl); 1844 1845 bool isPropertyReadonly(ObjCPropertyDecl *PropertyDecl, 1846 ObjCInterfaceDecl *IDecl); 1847 1848 typedef llvm::DenseSet<Selector, llvm::DenseMapInfo<Selector> > SelectorSet; 1849 typedef llvm::DenseMap<Selector, ObjCMethodDecl*> ProtocolsMethodsMap; 1850 1851 /// CheckProtocolMethodDefs - This routine checks unimplemented 1852 /// methods declared in protocol, and those referenced by it. 1853 /// \param IDecl - Used for checking for methods which may have been 1854 /// inherited. 1855 void CheckProtocolMethodDefs(SourceLocation ImpLoc, 1856 ObjCProtocolDecl *PDecl, 1857 bool& IncompleteImpl, 1858 const SelectorSet &InsMap, 1859 const SelectorSet &ClsMap, 1860 ObjCContainerDecl *CDecl); 1861 1862 /// CheckImplementationIvars - This routine checks if the instance variables 1863 /// listed in the implelementation match those listed in the interface. 1864 void CheckImplementationIvars(ObjCImplementationDecl *ImpDecl, 1865 ObjCIvarDecl **Fields, unsigned nIvars, 1866 SourceLocation Loc); 1867 1868 /// ImplMethodsVsClassMethods - This is main routine to warn if any method 1869 /// remains unimplemented in the class or category @implementation. 1870 void ImplMethodsVsClassMethods(Scope *S, ObjCImplDecl* IMPDecl, 1871 ObjCContainerDecl* IDecl, 1872 bool IncompleteImpl = false); 1873 1874 /// DiagnoseUnimplementedProperties - This routine warns on those properties 1875 /// which must be implemented by this implementation. 1876 void DiagnoseUnimplementedProperties(Scope *S, ObjCImplDecl* IMPDecl, 1877 ObjCContainerDecl *CDecl, 1878 const SelectorSet &InsMap); 1879 1880 /// DefaultSynthesizeProperties - This routine default synthesizes all 1881 /// properties which must be synthesized in class's @implementation. 1882 void DefaultSynthesizeProperties (Scope *S, ObjCImplDecl* IMPDecl, 1883 ObjCInterfaceDecl *IDecl); 1884 void DefaultSynthesizeProperties(Scope *S, Decl *D); 1885 1886 /// CollectImmediateProperties - This routine collects all properties in 1887 /// the class and its conforming protocols; but not those it its super class. 1888 void CollectImmediateProperties(ObjCContainerDecl *CDecl, 1889 llvm::DenseMap<IdentifierInfo *, ObjCPropertyDecl*>& PropMap, 1890 llvm::DenseMap<IdentifierInfo *, ObjCPropertyDecl*>& SuperPropMap); 1891 1892 1893 /// LookupPropertyDecl - Looks up a property in the current class and all 1894 /// its protocols. 1895 ObjCPropertyDecl *LookupPropertyDecl(const ObjCContainerDecl *CDecl, 1896 IdentifierInfo *II); 1897 1898 /// Called by ActOnProperty to handle @property declarations in 1899 //// class extensions. 1900 Decl *HandlePropertyInClassExtension(Scope *S, 1901 SourceLocation AtLoc, 1902 FieldDeclarator &FD, 1903 Selector GetterSel, 1904 Selector SetterSel, 1905 const bool isAssign, 1906 const bool isReadWrite, 1907 const unsigned Attributes, 1908 const unsigned AttributesAsWritten, 1909 bool *isOverridingProperty, 1910 TypeSourceInfo *T, 1911 tok::ObjCKeywordKind MethodImplKind); 1912 1913 /// Called by ActOnProperty and HandlePropertyInClassExtension to 1914 /// handle creating the ObjcPropertyDecl for a category or @interface. 1915 ObjCPropertyDecl *CreatePropertyDecl(Scope *S, 1916 ObjCContainerDecl *CDecl, 1917 SourceLocation AtLoc, 1918 FieldDeclarator &FD, 1919 Selector GetterSel, 1920 Selector SetterSel, 1921 const bool isAssign, 1922 const bool isReadWrite, 1923 const unsigned Attributes, 1924 const unsigned AttributesAsWritten, 1925 TypeSourceInfo *T, 1926 tok::ObjCKeywordKind MethodImplKind, 1927 DeclContext *lexicalDC = 0); 1928 1929 /// AtomicPropertySetterGetterRules - This routine enforces the rule (via 1930 /// warning) when atomic property has one but not the other user-declared 1931 /// setter or getter. 1932 void AtomicPropertySetterGetterRules(ObjCImplDecl* IMPDecl, 1933 ObjCContainerDecl* IDecl); 1934 1935 void DiagnoseOwningPropertyGetterSynthesis(const ObjCImplementationDecl *D); 1936 1937 void DiagnoseDuplicateIvars(ObjCInterfaceDecl *ID, ObjCInterfaceDecl *SID); 1938 1939 enum MethodMatchStrategy { 1940 MMS_loose, 1941 MMS_strict 1942 }; 1943 1944 /// MatchTwoMethodDeclarations - Checks if two methods' type match and returns 1945 /// true, or false, accordingly. 1946 bool MatchTwoMethodDeclarations(const ObjCMethodDecl *Method, 1947 const ObjCMethodDecl *PrevMethod, 1948 MethodMatchStrategy strategy = MMS_strict); 1949 1950 /// MatchAllMethodDeclarations - Check methods declaraed in interface or 1951 /// or protocol against those declared in their implementations. 1952 void MatchAllMethodDeclarations(const SelectorSet &InsMap, 1953 const SelectorSet &ClsMap, 1954 SelectorSet &InsMapSeen, 1955 SelectorSet &ClsMapSeen, 1956 ObjCImplDecl* IMPDecl, 1957 ObjCContainerDecl* IDecl, 1958 bool &IncompleteImpl, 1959 bool ImmediateClass, 1960 bool WarnExactMatch=false); 1961 1962 /// CheckCategoryVsClassMethodMatches - Checks that methods implemented in 1963 /// category matches with those implemented in its primary class and 1964 /// warns each time an exact match is found. 1965 void CheckCategoryVsClassMethodMatches(ObjCCategoryImplDecl *CatIMP); 1966 1967 /// \brief Add the given method to the list of globally-known methods. 1968 void addMethodToGlobalList(ObjCMethodList *List, ObjCMethodDecl *Method); 1969 1970private: 1971 /// AddMethodToGlobalPool - Add an instance or factory method to the global 1972 /// pool. See descriptoin of AddInstanceMethodToGlobalPool. 1973 void AddMethodToGlobalPool(ObjCMethodDecl *Method, bool impl, bool instance); 1974 1975 /// LookupMethodInGlobalPool - Returns the instance or factory method and 1976 /// optionally warns if there are multiple signatures. 1977 ObjCMethodDecl *LookupMethodInGlobalPool(Selector Sel, SourceRange R, 1978 bool receiverIdOrClass, 1979 bool warn, bool instance); 1980 1981public: 1982 /// AddInstanceMethodToGlobalPool - All instance methods in a translation 1983 /// unit are added to a global pool. This allows us to efficiently associate 1984 /// a selector with a method declaraation for purposes of typechecking 1985 /// messages sent to "id" (where the class of the object is unknown). 1986 void AddInstanceMethodToGlobalPool(ObjCMethodDecl *Method, bool impl=false) { 1987 AddMethodToGlobalPool(Method, impl, /*instance*/true); 1988 } 1989 1990 /// AddFactoryMethodToGlobalPool - Same as above, but for factory methods. 1991 void AddFactoryMethodToGlobalPool(ObjCMethodDecl *Method, bool impl=false) { 1992 AddMethodToGlobalPool(Method, impl, /*instance*/false); 1993 } 1994 1995 /// AddAnyMethodToGlobalPool - Add any method, instance or factory to global 1996 /// pool. 1997 void AddAnyMethodToGlobalPool(Decl *D); 1998 1999 /// LookupInstanceMethodInGlobalPool - Returns the method and warns if 2000 /// there are multiple signatures. 2001 ObjCMethodDecl *LookupInstanceMethodInGlobalPool(Selector Sel, SourceRange R, 2002 bool receiverIdOrClass=false, 2003 bool warn=true) { 2004 return LookupMethodInGlobalPool(Sel, R, receiverIdOrClass, 2005 warn, /*instance*/true); 2006 } 2007 2008 /// LookupFactoryMethodInGlobalPool - Returns the method and warns if 2009 /// there are multiple signatures. 2010 ObjCMethodDecl *LookupFactoryMethodInGlobalPool(Selector Sel, SourceRange R, 2011 bool receiverIdOrClass=false, 2012 bool warn=true) { 2013 return LookupMethodInGlobalPool(Sel, R, receiverIdOrClass, 2014 warn, /*instance*/false); 2015 } 2016 2017 /// LookupImplementedMethodInGlobalPool - Returns the method which has an 2018 /// implementation. 2019 ObjCMethodDecl *LookupImplementedMethodInGlobalPool(Selector Sel); 2020 2021 /// CollectIvarsToConstructOrDestruct - Collect those ivars which require 2022 /// initialization. 2023 void CollectIvarsToConstructOrDestruct(ObjCInterfaceDecl *OI, 2024 SmallVectorImpl<ObjCIvarDecl*> &Ivars); 2025 2026 //===--------------------------------------------------------------------===// 2027 // Statement Parsing Callbacks: SemaStmt.cpp. 2028public: 2029 class FullExprArg { 2030 public: 2031 FullExprArg(Sema &actions) : E(0) { } 2032 2033 // FIXME: The const_cast here is ugly. RValue references would make this 2034 // much nicer (or we could duplicate a bunch of the move semantics 2035 // emulation code from Ownership.h). 2036 FullExprArg(const FullExprArg& Other) : E(Other.E) {} 2037 2038 ExprResult release() { 2039 return move(E); 2040 } 2041 2042 Expr *get() const { return E; } 2043 2044 Expr *operator->() { 2045 return E; 2046 } 2047 2048 private: 2049 // FIXME: No need to make the entire Sema class a friend when it's just 2050 // Sema::MakeFullExpr that needs access to the constructor below. 2051 friend class Sema; 2052 2053 explicit FullExprArg(Expr *expr) : E(expr) {} 2054 2055 Expr *E; 2056 }; 2057 2058 FullExprArg MakeFullExpr(Expr *Arg) { 2059 return FullExprArg(ActOnFinishFullExpr(Arg).release()); 2060 } 2061 2062 StmtResult ActOnExprStmt(FullExprArg Expr); 2063 2064 StmtResult ActOnNullStmt(SourceLocation SemiLoc, 2065 bool HasLeadingEmptyMacro = false); 2066 StmtResult ActOnCompoundStmt(SourceLocation L, SourceLocation R, 2067 MultiStmtArg Elts, 2068 bool isStmtExpr); 2069 StmtResult ActOnDeclStmt(DeclGroupPtrTy Decl, 2070 SourceLocation StartLoc, 2071 SourceLocation EndLoc); 2072 void ActOnForEachDeclStmt(DeclGroupPtrTy Decl); 2073 StmtResult ActOnForEachLValueExpr(Expr *E); 2074 StmtResult ActOnCaseStmt(SourceLocation CaseLoc, Expr *LHSVal, 2075 SourceLocation DotDotDotLoc, Expr *RHSVal, 2076 SourceLocation ColonLoc); 2077 void ActOnCaseStmtBody(Stmt *CaseStmt, Stmt *SubStmt); 2078 2079 StmtResult ActOnDefaultStmt(SourceLocation DefaultLoc, 2080 SourceLocation ColonLoc, 2081 Stmt *SubStmt, Scope *CurScope); 2082 StmtResult ActOnLabelStmt(SourceLocation IdentLoc, LabelDecl *TheDecl, 2083 SourceLocation ColonLoc, Stmt *SubStmt); 2084 2085 StmtResult ActOnIfStmt(SourceLocation IfLoc, 2086 FullExprArg CondVal, Decl *CondVar, 2087 Stmt *ThenVal, 2088 SourceLocation ElseLoc, Stmt *ElseVal); 2089 StmtResult ActOnStartOfSwitchStmt(SourceLocation SwitchLoc, 2090 Expr *Cond, 2091 Decl *CondVar); 2092 StmtResult ActOnFinishSwitchStmt(SourceLocation SwitchLoc, 2093 Stmt *Switch, Stmt *Body); 2094 StmtResult ActOnWhileStmt(SourceLocation WhileLoc, 2095 FullExprArg Cond, 2096 Decl *CondVar, Stmt *Body); 2097 StmtResult ActOnDoStmt(SourceLocation DoLoc, Stmt *Body, 2098 SourceLocation WhileLoc, 2099 SourceLocation CondLParen, Expr *Cond, 2100 SourceLocation CondRParen); 2101 2102 StmtResult ActOnForStmt(SourceLocation ForLoc, 2103 SourceLocation LParenLoc, 2104 Stmt *First, FullExprArg Second, 2105 Decl *SecondVar, 2106 FullExprArg Third, 2107 SourceLocation RParenLoc, 2108 Stmt *Body); 2109 ExprResult ActOnObjCForCollectionOperand(SourceLocation forLoc, 2110 Expr *collection); 2111 StmtResult ActOnObjCForCollectionStmt(SourceLocation ForColLoc, 2112 SourceLocation LParenLoc, 2113 Stmt *First, Expr *Second, 2114 SourceLocation RParenLoc, Stmt *Body); 2115 StmtResult ActOnCXXForRangeStmt(SourceLocation ForLoc, 2116 SourceLocation LParenLoc, Stmt *LoopVar, 2117 SourceLocation ColonLoc, Expr *Collection, 2118 SourceLocation RParenLoc); 2119 StmtResult BuildCXXForRangeStmt(SourceLocation ForLoc, 2120 SourceLocation ColonLoc, 2121 Stmt *RangeDecl, Stmt *BeginEndDecl, 2122 Expr *Cond, Expr *Inc, 2123 Stmt *LoopVarDecl, 2124 SourceLocation RParenLoc); 2125 StmtResult FinishCXXForRangeStmt(Stmt *ForRange, Stmt *Body); 2126 2127 StmtResult ActOnGotoStmt(SourceLocation GotoLoc, 2128 SourceLocation LabelLoc, 2129 LabelDecl *TheDecl); 2130 StmtResult ActOnIndirectGotoStmt(SourceLocation GotoLoc, 2131 SourceLocation StarLoc, 2132 Expr *DestExp); 2133 StmtResult ActOnContinueStmt(SourceLocation ContinueLoc, Scope *CurScope); 2134 StmtResult ActOnBreakStmt(SourceLocation GotoLoc, Scope *CurScope); 2135 2136 const VarDecl *getCopyElisionCandidate(QualType ReturnType, Expr *E, 2137 bool AllowFunctionParameters); 2138 2139 StmtResult ActOnReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp); 2140 StmtResult ActOnCapScopeReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp); 2141 2142 StmtResult ActOnAsmStmt(SourceLocation AsmLoc, 2143 bool IsSimple, bool IsVolatile, 2144 unsigned NumOutputs, unsigned NumInputs, 2145 IdentifierInfo **Names, 2146 MultiExprArg Constraints, 2147 MultiExprArg Exprs, 2148 Expr *AsmString, 2149 MultiExprArg Clobbers, 2150 SourceLocation RParenLoc, 2151 bool MSAsm = false); 2152 2153 2154 VarDecl *BuildObjCExceptionDecl(TypeSourceInfo *TInfo, QualType ExceptionType, 2155 SourceLocation StartLoc, 2156 SourceLocation IdLoc, IdentifierInfo *Id, 2157 bool Invalid = false); 2158 2159 Decl *ActOnObjCExceptionDecl(Scope *S, Declarator &D); 2160 2161 StmtResult ActOnObjCAtCatchStmt(SourceLocation AtLoc, SourceLocation RParen, 2162 Decl *Parm, Stmt *Body); 2163 2164 StmtResult ActOnObjCAtFinallyStmt(SourceLocation AtLoc, Stmt *Body); 2165 2166 StmtResult ActOnObjCAtTryStmt(SourceLocation AtLoc, Stmt *Try, 2167 MultiStmtArg Catch, Stmt *Finally); 2168 2169 StmtResult BuildObjCAtThrowStmt(SourceLocation AtLoc, Expr *Throw); 2170 StmtResult ActOnObjCAtThrowStmt(SourceLocation AtLoc, Expr *Throw, 2171 Scope *CurScope); 2172 ExprResult ActOnObjCAtSynchronizedOperand(SourceLocation atLoc, 2173 Expr *operand); 2174 StmtResult ActOnObjCAtSynchronizedStmt(SourceLocation AtLoc, 2175 Expr *SynchExpr, 2176 Stmt *SynchBody); 2177 2178 StmtResult ActOnObjCAutoreleasePoolStmt(SourceLocation AtLoc, Stmt *Body); 2179 2180 VarDecl *BuildExceptionDeclaration(Scope *S, TypeSourceInfo *TInfo, 2181 SourceLocation StartLoc, 2182 SourceLocation IdLoc, 2183 IdentifierInfo *Id); 2184 2185 Decl *ActOnExceptionDeclarator(Scope *S, Declarator &D); 2186 2187 StmtResult ActOnCXXCatchBlock(SourceLocation CatchLoc, 2188 Decl *ExDecl, Stmt *HandlerBlock); 2189 StmtResult ActOnCXXTryBlock(SourceLocation TryLoc, Stmt *TryBlock, 2190 MultiStmtArg Handlers); 2191 2192 StmtResult ActOnSEHTryBlock(bool IsCXXTry, // try (true) or __try (false) ? 2193 SourceLocation TryLoc, 2194 Stmt *TryBlock, 2195 Stmt *Handler); 2196 2197 StmtResult ActOnSEHExceptBlock(SourceLocation Loc, 2198 Expr *FilterExpr, 2199 Stmt *Block); 2200 2201 StmtResult ActOnSEHFinallyBlock(SourceLocation Loc, 2202 Stmt *Block); 2203 2204 void DiagnoseReturnInConstructorExceptionHandler(CXXTryStmt *TryBlock); 2205 2206 bool ShouldWarnIfUnusedFileScopedDecl(const DeclaratorDecl *D) const; 2207 2208 /// \brief If it's a file scoped decl that must warn if not used, keep track 2209 /// of it. 2210 void MarkUnusedFileScopedDecl(const DeclaratorDecl *D); 2211 2212 /// DiagnoseUnusedExprResult - If the statement passed in is an expression 2213 /// whose result is unused, warn. 2214 void DiagnoseUnusedExprResult(const Stmt *S); 2215 void DiagnoseUnusedDecl(const NamedDecl *ND); 2216 2217 ParsingDeclState PushParsingDeclaration() { 2218 return DelayedDiagnostics.pushParsingDecl(); 2219 } 2220 void PopParsingDeclaration(ParsingDeclState state, Decl *decl) { 2221 DelayedDiagnostics::popParsingDecl(*this, state, decl); 2222 } 2223 2224 typedef ProcessingContextState ParsingClassState; 2225 ParsingClassState PushParsingClass() { 2226 return DelayedDiagnostics.pushContext(); 2227 } 2228 void PopParsingClass(ParsingClassState state) { 2229 DelayedDiagnostics.popContext(state); 2230 } 2231 2232 void EmitDeprecationWarning(NamedDecl *D, StringRef Message, 2233 SourceLocation Loc, 2234 const ObjCInterfaceDecl *UnknownObjCClass=0); 2235 2236 void HandleDelayedDeprecationCheck(sema::DelayedDiagnostic &DD, Decl *Ctx); 2237 2238 bool makeUnavailableInSystemHeader(SourceLocation loc, 2239 StringRef message); 2240 2241 //===--------------------------------------------------------------------===// 2242 // Expression Parsing Callbacks: SemaExpr.cpp. 2243 2244 bool CanUseDecl(NamedDecl *D); 2245 bool DiagnoseUseOfDecl(NamedDecl *D, SourceLocation Loc, 2246 const ObjCInterfaceDecl *UnknownObjCClass=0); 2247 AvailabilityResult DiagnoseAvailabilityOfDecl(NamedDecl *D, 2248 SourceLocation Loc, 2249 const ObjCInterfaceDecl *UnknownObjCClass); 2250 std::string getDeletedOrUnavailableSuffix(const FunctionDecl *FD); 2251 bool DiagnosePropertyAccessorMismatch(ObjCPropertyDecl *PD, 2252 ObjCMethodDecl *Getter, 2253 SourceLocation Loc); 2254 void DiagnoseSentinelCalls(NamedDecl *D, SourceLocation Loc, 2255 Expr **Args, unsigned NumArgs); 2256 2257 void PushExpressionEvaluationContext(ExpressionEvaluationContext NewContext); 2258 2259 void PopExpressionEvaluationContext(); 2260 2261 void DiscardCleanupsInEvaluationContext(); 2262 2263 ExprResult TranformToPotentiallyEvaluated(Expr *E); 2264 ExprResult HandleExprEvaluationContextForTypeof(Expr *E); 2265 2266 void MarkDeclarationReferenced(SourceLocation Loc, Decl *D); 2267 void MarkDeclarationsReferencedInType(SourceLocation Loc, QualType T); 2268 void MarkDeclarationsReferencedInExpr(Expr *E); 2269 2270 /// \brief Try to recover by turning the given expression into a 2271 /// call. Returns true if recovery was attempted or an error was 2272 /// emitted; this may also leave the ExprResult invalid. 2273 bool tryToRecoverWithCall(ExprResult &E, const PartialDiagnostic &PD, 2274 bool ForceComplain = false, 2275 bool (*IsPlausibleResult)(QualType) = 0); 2276 2277 /// \brief Figure out if an expression could be turned into a call. 2278 bool isExprCallable(const Expr &E, QualType &ZeroArgCallReturnTy, 2279 UnresolvedSetImpl &NonTemplateOverloads); 2280 2281 /// \brief Conditionally issue a diagnostic based on the current 2282 /// evaluation context. 2283 /// 2284 /// \param stmt - If stmt is non-null, delay reporting the diagnostic until 2285 /// the function body is parsed, and then do a basic reachability analysis to 2286 /// determine if the statement is reachable. If it is unreachable, the 2287 /// diagnostic will not be emitted. 2288 bool DiagRuntimeBehavior(SourceLocation Loc, const Stmt *Statement, 2289 const PartialDiagnostic &PD); 2290 2291 // Primary Expressions. 2292 SourceRange getExprRange(Expr *E) const; 2293 2294 ExprResult ActOnIdExpression(Scope *S, CXXScopeSpec &SS, UnqualifiedId &Id, 2295 bool HasTrailingLParen, bool IsAddressOfOperand, 2296 CorrectionCandidateCallback *CCC = 0); 2297 2298 void DecomposeUnqualifiedId(const UnqualifiedId &Id, 2299 TemplateArgumentListInfo &Buffer, 2300 DeclarationNameInfo &NameInfo, 2301 const TemplateArgumentListInfo *&TemplateArgs); 2302 2303 bool DiagnoseEmptyLookup(Scope *S, CXXScopeSpec &SS, LookupResult &R, 2304 CorrectionCandidateCallback &CCC, 2305 TemplateArgumentListInfo *ExplicitTemplateArgs = 0, 2306 Expr **Args = 0, unsigned NumArgs = 0); 2307 2308 ExprResult LookupInObjCMethod(LookupResult &LookUp, Scope *S, 2309 IdentifierInfo *II, 2310 bool AllowBuiltinCreation=false); 2311 2312 ExprResult ActOnDependentIdExpression(const CXXScopeSpec &SS, 2313 const DeclarationNameInfo &NameInfo, 2314 bool isAddressOfOperand, 2315 const TemplateArgumentListInfo *TemplateArgs); 2316 2317 ExprResult BuildDeclRefExpr(ValueDecl *D, QualType Ty, 2318 ExprValueKind VK, 2319 SourceLocation Loc, 2320 const CXXScopeSpec *SS = 0); 2321 ExprResult BuildDeclRefExpr(ValueDecl *D, QualType Ty, 2322 ExprValueKind VK, 2323 const DeclarationNameInfo &NameInfo, 2324 const CXXScopeSpec *SS = 0); 2325 ExprResult 2326 BuildAnonymousStructUnionMemberReference(const CXXScopeSpec &SS, 2327 SourceLocation nameLoc, 2328 IndirectFieldDecl *indirectField, 2329 Expr *baseObjectExpr = 0, 2330 SourceLocation opLoc = SourceLocation()); 2331 ExprResult BuildPossibleImplicitMemberExpr(const CXXScopeSpec &SS, 2332 LookupResult &R, 2333 const TemplateArgumentListInfo *TemplateArgs); 2334 ExprResult BuildImplicitMemberExpr(const CXXScopeSpec &SS, 2335 LookupResult &R, 2336 const TemplateArgumentListInfo *TemplateArgs, 2337 bool IsDefiniteInstance); 2338 bool UseArgumentDependentLookup(const CXXScopeSpec &SS, 2339 const LookupResult &R, 2340 bool HasTrailingLParen); 2341 2342 ExprResult BuildQualifiedDeclarationNameExpr(CXXScopeSpec &SS, 2343 const DeclarationNameInfo &NameInfo); 2344 ExprResult BuildDependentDeclRefExpr(const CXXScopeSpec &SS, 2345 const DeclarationNameInfo &NameInfo, 2346 const TemplateArgumentListInfo *TemplateArgs); 2347 2348 ExprResult BuildDeclarationNameExpr(const CXXScopeSpec &SS, 2349 LookupResult &R, 2350 bool NeedsADL); 2351 ExprResult BuildDeclarationNameExpr(const CXXScopeSpec &SS, 2352 const DeclarationNameInfo &NameInfo, 2353 NamedDecl *D); 2354 2355 ExprResult ActOnPredefinedExpr(SourceLocation Loc, tok::TokenKind Kind); 2356 ExprResult ActOnNumericConstant(const Token &Tok); 2357 ExprResult ActOnCharacterConstant(const Token &Tok); 2358 ExprResult ActOnParenExpr(SourceLocation L, SourceLocation R, Expr *E); 2359 ExprResult ActOnParenOrParenListExpr(SourceLocation L, 2360 SourceLocation R, 2361 MultiExprArg Val); 2362 2363 /// ActOnStringLiteral - The specified tokens were lexed as pasted string 2364 /// fragments (e.g. "foo" "bar" L"baz"). 2365 ExprResult ActOnStringLiteral(const Token *StringToks, 2366 unsigned NumStringToks); 2367 2368 ExprResult ActOnGenericSelectionExpr(SourceLocation KeyLoc, 2369 SourceLocation DefaultLoc, 2370 SourceLocation RParenLoc, 2371 Expr *ControllingExpr, 2372 MultiTypeArg ArgTypes, 2373 MultiExprArg ArgExprs); 2374 ExprResult CreateGenericSelectionExpr(SourceLocation KeyLoc, 2375 SourceLocation DefaultLoc, 2376 SourceLocation RParenLoc, 2377 Expr *ControllingExpr, 2378 TypeSourceInfo **Types, 2379 Expr **Exprs, 2380 unsigned NumAssocs); 2381 2382 // Binary/Unary Operators. 'Tok' is the token for the operator. 2383 ExprResult CreateBuiltinUnaryOp(SourceLocation OpLoc, UnaryOperatorKind Opc, 2384 Expr *InputExpr); 2385 ExprResult BuildUnaryOp(Scope *S, SourceLocation OpLoc, 2386 UnaryOperatorKind Opc, Expr *Input); 2387 ExprResult ActOnUnaryOp(Scope *S, SourceLocation OpLoc, 2388 tok::TokenKind Op, Expr *Input); 2389 2390 ExprResult CreateUnaryExprOrTypeTraitExpr(TypeSourceInfo *TInfo, 2391 SourceLocation OpLoc, 2392 UnaryExprOrTypeTrait ExprKind, 2393 SourceRange R); 2394 ExprResult CreateUnaryExprOrTypeTraitExpr(Expr *E, SourceLocation OpLoc, 2395 UnaryExprOrTypeTrait ExprKind); 2396 ExprResult 2397 ActOnUnaryExprOrTypeTraitExpr(SourceLocation OpLoc, 2398 UnaryExprOrTypeTrait ExprKind, 2399 bool IsType, void *TyOrEx, 2400 const SourceRange &ArgRange); 2401 2402 ExprResult CheckPlaceholderExpr(Expr *E); 2403 bool CheckVecStepExpr(Expr *E); 2404 2405 bool CheckUnaryExprOrTypeTraitOperand(Expr *E, UnaryExprOrTypeTrait ExprKind); 2406 bool CheckUnaryExprOrTypeTraitOperand(QualType ExprType, SourceLocation OpLoc, 2407 SourceRange ExprRange, 2408 UnaryExprOrTypeTrait ExprKind); 2409 ExprResult ActOnSizeofParameterPackExpr(Scope *S, 2410 SourceLocation OpLoc, 2411 IdentifierInfo &Name, 2412 SourceLocation NameLoc, 2413 SourceLocation RParenLoc); 2414 ExprResult ActOnPostfixUnaryOp(Scope *S, SourceLocation OpLoc, 2415 tok::TokenKind Kind, Expr *Input); 2416 2417 ExprResult ActOnArraySubscriptExpr(Scope *S, Expr *Base, SourceLocation LLoc, 2418 Expr *Idx, SourceLocation RLoc); 2419 ExprResult CreateBuiltinArraySubscriptExpr(Expr *Base, SourceLocation LLoc, 2420 Expr *Idx, SourceLocation RLoc); 2421 2422 ExprResult BuildMemberReferenceExpr(Expr *Base, QualType BaseType, 2423 SourceLocation OpLoc, bool IsArrow, 2424 CXXScopeSpec &SS, 2425 NamedDecl *FirstQualifierInScope, 2426 const DeclarationNameInfo &NameInfo, 2427 const TemplateArgumentListInfo *TemplateArgs); 2428 2429 ExprResult BuildMemberReferenceExpr(Expr *Base, QualType BaseType, 2430 SourceLocation OpLoc, bool IsArrow, 2431 const CXXScopeSpec &SS, 2432 NamedDecl *FirstQualifierInScope, 2433 LookupResult &R, 2434 const TemplateArgumentListInfo *TemplateArgs, 2435 bool SuppressQualifierCheck = false); 2436 2437 ExprResult PerformMemberExprBaseConversion(Expr *Base, bool IsArrow); 2438 ExprResult LookupMemberExpr(LookupResult &R, ExprResult &Base, 2439 bool &IsArrow, SourceLocation OpLoc, 2440 CXXScopeSpec &SS, 2441 Decl *ObjCImpDecl, 2442 bool HasTemplateArgs); 2443 2444 bool CheckQualifiedMemberReference(Expr *BaseExpr, QualType BaseType, 2445 const CXXScopeSpec &SS, 2446 const LookupResult &R); 2447 2448 ExprResult ActOnDependentMemberExpr(Expr *Base, QualType BaseType, 2449 bool IsArrow, SourceLocation OpLoc, 2450 const CXXScopeSpec &SS, 2451 NamedDecl *FirstQualifierInScope, 2452 const DeclarationNameInfo &NameInfo, 2453 const TemplateArgumentListInfo *TemplateArgs); 2454 2455 ExprResult ActOnMemberAccessExpr(Scope *S, Expr *Base, 2456 SourceLocation OpLoc, 2457 tok::TokenKind OpKind, 2458 CXXScopeSpec &SS, 2459 UnqualifiedId &Member, 2460 Decl *ObjCImpDecl, 2461 bool HasTrailingLParen); 2462 2463 void ActOnDefaultCtorInitializers(Decl *CDtorDecl); 2464 bool ConvertArgumentsForCall(CallExpr *Call, Expr *Fn, 2465 FunctionDecl *FDecl, 2466 const FunctionProtoType *Proto, 2467 Expr **Args, unsigned NumArgs, 2468 SourceLocation RParenLoc, 2469 bool ExecConfig = false); 2470 void CheckStaticArrayArgument(SourceLocation CallLoc, 2471 ParmVarDecl *Param, 2472 const Expr *ArgExpr); 2473 2474 /// ActOnCallExpr - Handle a call to Fn with the specified array of arguments. 2475 /// This provides the location of the left/right parens and a list of comma 2476 /// locations. 2477 ExprResult ActOnCallExpr(Scope *S, Expr *Fn, SourceLocation LParenLoc, 2478 MultiExprArg ArgExprs, SourceLocation RParenLoc, 2479 Expr *ExecConfig = 0, bool IsExecConfig = false); 2480 ExprResult BuildResolvedCallExpr(Expr *Fn, NamedDecl *NDecl, 2481 SourceLocation LParenLoc, 2482 Expr **Args, unsigned NumArgs, 2483 SourceLocation RParenLoc, 2484 Expr *Config = 0, 2485 bool IsExecConfig = false); 2486 2487 ExprResult ActOnCUDAExecConfigExpr(Scope *S, SourceLocation LLLLoc, 2488 MultiExprArg ExecConfig, 2489 SourceLocation GGGLoc); 2490 2491 ExprResult ActOnCastExpr(Scope *S, SourceLocation LParenLoc, 2492 Declarator &D, ParsedType &Ty, 2493 SourceLocation RParenLoc, Expr *CastExpr); 2494 ExprResult BuildCStyleCastExpr(SourceLocation LParenLoc, 2495 TypeSourceInfo *Ty, 2496 SourceLocation RParenLoc, 2497 Expr *Op); 2498 CastKind PrepareScalarCast(ExprResult &src, QualType destType); 2499 2500 /// \brief Build an altivec or OpenCL literal. 2501 ExprResult BuildVectorLiteral(SourceLocation LParenLoc, 2502 SourceLocation RParenLoc, Expr *E, 2503 TypeSourceInfo *TInfo); 2504 2505 ExprResult MaybeConvertParenListExprToParenExpr(Scope *S, Expr *ME); 2506 2507 ExprResult ActOnCompoundLiteral(SourceLocation LParenLoc, 2508 ParsedType Ty, 2509 SourceLocation RParenLoc, 2510 Expr *InitExpr); 2511 2512 ExprResult BuildCompoundLiteralExpr(SourceLocation LParenLoc, 2513 TypeSourceInfo *TInfo, 2514 SourceLocation RParenLoc, 2515 Expr *LiteralExpr); 2516 2517 ExprResult ActOnInitList(SourceLocation LBraceLoc, 2518 MultiExprArg InitArgList, 2519 SourceLocation RBraceLoc); 2520 2521 ExprResult ActOnDesignatedInitializer(Designation &Desig, 2522 SourceLocation Loc, 2523 bool GNUSyntax, 2524 ExprResult Init); 2525 2526 ExprResult ActOnBinOp(Scope *S, SourceLocation TokLoc, 2527 tok::TokenKind Kind, Expr *LHSExpr, Expr *RHSExpr); 2528 ExprResult BuildBinOp(Scope *S, SourceLocation OpLoc, 2529 BinaryOperatorKind Opc, Expr *LHSExpr, Expr *RHSExpr); 2530 ExprResult CreateBuiltinBinOp(SourceLocation OpLoc, BinaryOperatorKind Opc, 2531 Expr *LHSExpr, Expr *RHSExpr); 2532 2533 /// ActOnConditionalOp - Parse a ?: operation. Note that 'LHS' may be null 2534 /// in the case of a the GNU conditional expr extension. 2535 ExprResult ActOnConditionalOp(SourceLocation QuestionLoc, 2536 SourceLocation ColonLoc, 2537 Expr *CondExpr, Expr *LHSExpr, Expr *RHSExpr); 2538 2539 /// ActOnAddrLabel - Parse the GNU address of label extension: "&&foo". 2540 ExprResult ActOnAddrLabel(SourceLocation OpLoc, SourceLocation LabLoc, 2541 LabelDecl *TheDecl); 2542 2543 ExprResult ActOnStmtExpr(SourceLocation LPLoc, Stmt *SubStmt, 2544 SourceLocation RPLoc); // "({..})" 2545 2546 // __builtin_offsetof(type, identifier(.identifier|[expr])*) 2547 struct OffsetOfComponent { 2548 SourceLocation LocStart, LocEnd; 2549 bool isBrackets; // true if [expr], false if .ident 2550 union { 2551 IdentifierInfo *IdentInfo; 2552 Expr *E; 2553 } U; 2554 }; 2555 2556 /// __builtin_offsetof(type, a.b[123][456].c) 2557 ExprResult BuildBuiltinOffsetOf(SourceLocation BuiltinLoc, 2558 TypeSourceInfo *TInfo, 2559 OffsetOfComponent *CompPtr, 2560 unsigned NumComponents, 2561 SourceLocation RParenLoc); 2562 ExprResult ActOnBuiltinOffsetOf(Scope *S, 2563 SourceLocation BuiltinLoc, 2564 SourceLocation TypeLoc, 2565 ParsedType ParsedArgTy, 2566 OffsetOfComponent *CompPtr, 2567 unsigned NumComponents, 2568 SourceLocation RParenLoc); 2569 2570 // __builtin_choose_expr(constExpr, expr1, expr2) 2571 ExprResult ActOnChooseExpr(SourceLocation BuiltinLoc, 2572 Expr *CondExpr, Expr *LHSExpr, 2573 Expr *RHSExpr, SourceLocation RPLoc); 2574 2575 // __builtin_va_arg(expr, type) 2576 ExprResult ActOnVAArg(SourceLocation BuiltinLoc, Expr *E, ParsedType Ty, 2577 SourceLocation RPLoc); 2578 ExprResult BuildVAArgExpr(SourceLocation BuiltinLoc, Expr *E, 2579 TypeSourceInfo *TInfo, SourceLocation RPLoc); 2580 2581 // __null 2582 ExprResult ActOnGNUNullExpr(SourceLocation TokenLoc); 2583 2584 bool CheckCaseExpression(Expr *E); 2585 2586 /// \brief Describes the result of an "if-exists" condition check. 2587 enum IfExistsResult { 2588 /// \brief The symbol exists. 2589 IER_Exists, 2590 2591 /// \brief The symbol does not exist. 2592 IER_DoesNotExist, 2593 2594 /// \brief The name is a dependent name, so the results will differ 2595 /// from one instantiation to the next. 2596 IER_Dependent, 2597 2598 /// \brief An error occurred. 2599 IER_Error 2600 }; 2601 2602 IfExistsResult 2603 CheckMicrosoftIfExistsSymbol(Scope *S, CXXScopeSpec &SS, 2604 const DeclarationNameInfo &TargetNameInfo); 2605 2606 IfExistsResult 2607 CheckMicrosoftIfExistsSymbol(Scope *S, SourceLocation KeywordLoc, 2608 bool IsIfExists, CXXScopeSpec &SS, 2609 UnqualifiedId &Name); 2610 2611 StmtResult BuildMSDependentExistsStmt(SourceLocation KeywordLoc, 2612 bool IsIfExists, 2613 NestedNameSpecifierLoc QualifierLoc, 2614 DeclarationNameInfo NameInfo, 2615 Stmt *Nested); 2616 StmtResult ActOnMSDependentExistsStmt(SourceLocation KeywordLoc, 2617 bool IsIfExists, 2618 CXXScopeSpec &SS, UnqualifiedId &Name, 2619 Stmt *Nested); 2620 2621 //===------------------------- "Block" Extension ------------------------===// 2622 2623 /// ActOnBlockStart - This callback is invoked when a block literal is 2624 /// started. 2625 void ActOnBlockStart(SourceLocation CaretLoc, Scope *CurScope); 2626 2627 /// ActOnBlockArguments - This callback allows processing of block arguments. 2628 /// If there are no arguments, this is still invoked. 2629 void ActOnBlockArguments(Declarator &ParamInfo, Scope *CurScope); 2630 2631 /// ActOnBlockError - If there is an error parsing a block, this callback 2632 /// is invoked to pop the information about the block from the action impl. 2633 void ActOnBlockError(SourceLocation CaretLoc, Scope *CurScope); 2634 2635 /// ActOnBlockStmtExpr - This is called when the body of a block statement 2636 /// literal was successfully completed. ^(int x){...} 2637 ExprResult ActOnBlockStmtExpr(SourceLocation CaretLoc, Stmt *Body, 2638 Scope *CurScope); 2639 2640 //===---------------------------- OpenCL Features -----------------------===// 2641 2642 /// __builtin_astype(...) 2643 ExprResult ActOnAsTypeExpr(Expr *E, ParsedType ParsedDestTy, 2644 SourceLocation BuiltinLoc, 2645 SourceLocation RParenLoc); 2646 2647 //===---------------------------- C++ Features --------------------------===// 2648 2649 // Act on C++ namespaces 2650 Decl *ActOnStartNamespaceDef(Scope *S, SourceLocation InlineLoc, 2651 SourceLocation NamespaceLoc, 2652 SourceLocation IdentLoc, 2653 IdentifierInfo *Ident, 2654 SourceLocation LBrace, 2655 AttributeList *AttrList); 2656 void ActOnFinishNamespaceDef(Decl *Dcl, SourceLocation RBrace); 2657 2658 NamespaceDecl *getStdNamespace() const; 2659 NamespaceDecl *getOrCreateStdNamespace(); 2660 2661 CXXRecordDecl *getStdBadAlloc() const; 2662 2663 /// \brief Tests whether Ty is an instance of std::initializer_list and, if 2664 /// it is and Element is not NULL, assigns the element type to Element. 2665 bool isStdInitializerList(QualType Ty, QualType *Element); 2666 2667 /// \brief Looks for the std::initializer_list template and instantiates it 2668 /// with Element, or emits an error if it's not found. 2669 /// 2670 /// \returns The instantiated template, or null on error. 2671 QualType BuildStdInitializerList(QualType Element, SourceLocation Loc); 2672 2673 /// \brief Determine whether Ctor is an initializer-list constructor, as 2674 /// defined in [dcl.init.list]p2. 2675 bool isInitListConstructor(const CXXConstructorDecl *Ctor); 2676 2677 Decl *ActOnUsingDirective(Scope *CurScope, 2678 SourceLocation UsingLoc, 2679 SourceLocation NamespcLoc, 2680 CXXScopeSpec &SS, 2681 SourceLocation IdentLoc, 2682 IdentifierInfo *NamespcName, 2683 AttributeList *AttrList); 2684 2685 void PushUsingDirective(Scope *S, UsingDirectiveDecl *UDir); 2686 2687 Decl *ActOnNamespaceAliasDef(Scope *CurScope, 2688 SourceLocation NamespaceLoc, 2689 SourceLocation AliasLoc, 2690 IdentifierInfo *Alias, 2691 CXXScopeSpec &SS, 2692 SourceLocation IdentLoc, 2693 IdentifierInfo *Ident); 2694 2695 void HideUsingShadowDecl(Scope *S, UsingShadowDecl *Shadow); 2696 bool CheckUsingShadowDecl(UsingDecl *UD, NamedDecl *Target, 2697 const LookupResult &PreviousDecls); 2698 UsingShadowDecl *BuildUsingShadowDecl(Scope *S, UsingDecl *UD, 2699 NamedDecl *Target); 2700 2701 bool CheckUsingDeclRedeclaration(SourceLocation UsingLoc, 2702 bool isTypeName, 2703 const CXXScopeSpec &SS, 2704 SourceLocation NameLoc, 2705 const LookupResult &Previous); 2706 bool CheckUsingDeclQualifier(SourceLocation UsingLoc, 2707 const CXXScopeSpec &SS, 2708 SourceLocation NameLoc); 2709 2710 NamedDecl *BuildUsingDeclaration(Scope *S, AccessSpecifier AS, 2711 SourceLocation UsingLoc, 2712 CXXScopeSpec &SS, 2713 const DeclarationNameInfo &NameInfo, 2714 AttributeList *AttrList, 2715 bool IsInstantiation, 2716 bool IsTypeName, 2717 SourceLocation TypenameLoc); 2718 2719 bool CheckInheritedConstructorUsingDecl(UsingDecl *UD); 2720 2721 Decl *ActOnUsingDeclaration(Scope *CurScope, 2722 AccessSpecifier AS, 2723 bool HasUsingKeyword, 2724 SourceLocation UsingLoc, 2725 CXXScopeSpec &SS, 2726 UnqualifiedId &Name, 2727 AttributeList *AttrList, 2728 bool IsTypeName, 2729 SourceLocation TypenameLoc); 2730 Decl *ActOnAliasDeclaration(Scope *CurScope, 2731 AccessSpecifier AS, 2732 MultiTemplateParamsArg TemplateParams, 2733 SourceLocation UsingLoc, 2734 UnqualifiedId &Name, 2735 TypeResult Type); 2736 2737 /// AddCXXDirectInitializerToDecl - This action is called immediately after 2738 /// ActOnDeclarator, when a C++ direct initializer is present. 2739 /// e.g: "int x(1);" 2740 void AddCXXDirectInitializerToDecl(Decl *Dcl, 2741 SourceLocation LParenLoc, 2742 MultiExprArg Exprs, 2743 SourceLocation RParenLoc, 2744 bool TypeMayContainAuto); 2745 2746 /// InitializeVarWithConstructor - Creates an CXXConstructExpr 2747 /// and sets it as the initializer for the the passed in VarDecl. 2748 bool InitializeVarWithConstructor(VarDecl *VD, 2749 CXXConstructorDecl *Constructor, 2750 MultiExprArg Exprs, 2751 bool HadMultipleCandidates); 2752 2753 /// BuildCXXConstructExpr - Creates a complete call to a constructor, 2754 /// including handling of its default argument expressions. 2755 /// 2756 /// \param ConstructKind - a CXXConstructExpr::ConstructionKind 2757 ExprResult 2758 BuildCXXConstructExpr(SourceLocation ConstructLoc, QualType DeclInitType, 2759 CXXConstructorDecl *Constructor, MultiExprArg Exprs, 2760 bool HadMultipleCandidates, bool RequiresZeroInit, 2761 unsigned ConstructKind, SourceRange ParenRange); 2762 2763 // FIXME: Can re remove this and have the above BuildCXXConstructExpr check if 2764 // the constructor can be elidable? 2765 ExprResult 2766 BuildCXXConstructExpr(SourceLocation ConstructLoc, QualType DeclInitType, 2767 CXXConstructorDecl *Constructor, bool Elidable, 2768 MultiExprArg Exprs, bool HadMultipleCandidates, 2769 bool RequiresZeroInit, unsigned ConstructKind, 2770 SourceRange ParenRange); 2771 2772 /// BuildCXXDefaultArgExpr - Creates a CXXDefaultArgExpr, instantiating 2773 /// the default expr if needed. 2774 ExprResult BuildCXXDefaultArgExpr(SourceLocation CallLoc, 2775 FunctionDecl *FD, 2776 ParmVarDecl *Param); 2777 2778 /// FinalizeVarWithDestructor - Prepare for calling destructor on the 2779 /// constructed variable. 2780 void FinalizeVarWithDestructor(VarDecl *VD, const RecordType *DeclInitType); 2781 2782 /// \brief Helper class that collects exception specifications for 2783 /// implicitly-declared special member functions. 2784 class ImplicitExceptionSpecification { 2785 // Pointer to allow copying 2786 ASTContext *Context; 2787 // We order exception specifications thus: 2788 // noexcept is the most restrictive, but is only used in C++0x. 2789 // throw() comes next. 2790 // Then a throw(collected exceptions) 2791 // Finally no specification. 2792 // throw(...) is used instead if any called function uses it. 2793 // 2794 // If this exception specification cannot be known yet (for instance, 2795 // because this is the exception specification for a defaulted default 2796 // constructor and we haven't finished parsing the deferred parts of the 2797 // class yet), the C++0x standard does not specify how to behave. We 2798 // record this as an 'unknown' exception specification, which overrules 2799 // any other specification (even 'none', to keep this rule simple). 2800 ExceptionSpecificationType ComputedEST; 2801 llvm::SmallPtrSet<CanQualType, 4> ExceptionsSeen; 2802 SmallVector<QualType, 4> Exceptions; 2803 2804 void ClearExceptions() { 2805 ExceptionsSeen.clear(); 2806 Exceptions.clear(); 2807 } 2808 2809 public: 2810 explicit ImplicitExceptionSpecification(ASTContext &Context) 2811 : Context(&Context), ComputedEST(EST_BasicNoexcept) { 2812 if (!Context.getLangOptions().CPlusPlus0x) 2813 ComputedEST = EST_DynamicNone; 2814 } 2815 2816 /// \brief Get the computed exception specification type. 2817 ExceptionSpecificationType getExceptionSpecType() const { 2818 assert(ComputedEST != EST_ComputedNoexcept && 2819 "noexcept(expr) should not be a possible result"); 2820 return ComputedEST; 2821 } 2822 2823 /// \brief The number of exceptions in the exception specification. 2824 unsigned size() const { return Exceptions.size(); } 2825 2826 /// \brief The set of exceptions in the exception specification. 2827 const QualType *data() const { return Exceptions.data(); } 2828 2829 /// \brief Integrate another called method into the collected data. 2830 void CalledDecl(CXXMethodDecl *Method); 2831 2832 /// \brief Integrate an invoked expression into the collected data. 2833 void CalledExpr(Expr *E); 2834 2835 /// \brief Specify that the exception specification can't be detemined yet. 2836 void SetDelayed() { 2837 ClearExceptions(); 2838 ComputedEST = EST_Delayed; 2839 } 2840 2841 FunctionProtoType::ExtProtoInfo getEPI() const { 2842 FunctionProtoType::ExtProtoInfo EPI; 2843 EPI.ExceptionSpecType = getExceptionSpecType(); 2844 EPI.NumExceptions = size(); 2845 EPI.Exceptions = data(); 2846 return EPI; 2847 } 2848 }; 2849 2850 /// \brief Determine what sort of exception specification a defaulted 2851 /// copy constructor of a class will have. 2852 ImplicitExceptionSpecification 2853 ComputeDefaultedDefaultCtorExceptionSpec(CXXRecordDecl *ClassDecl); 2854 2855 /// \brief Determine what sort of exception specification a defaulted 2856 /// default constructor of a class will have, and whether the parameter 2857 /// will be const. 2858 std::pair<ImplicitExceptionSpecification, bool> 2859 ComputeDefaultedCopyCtorExceptionSpecAndConst(CXXRecordDecl *ClassDecl); 2860 2861 /// \brief Determine what sort of exception specification a defautled 2862 /// copy assignment operator of a class will have, and whether the 2863 /// parameter will be const. 2864 std::pair<ImplicitExceptionSpecification, bool> 2865 ComputeDefaultedCopyAssignmentExceptionSpecAndConst(CXXRecordDecl *ClassDecl); 2866 2867 /// \brief Determine what sort of exception specification a defaulted move 2868 /// constructor of a class will have. 2869 ImplicitExceptionSpecification 2870 ComputeDefaultedMoveCtorExceptionSpec(CXXRecordDecl *ClassDecl); 2871 2872 /// \brief Determine what sort of exception specification a defaulted move 2873 /// assignment operator of a class will have. 2874 ImplicitExceptionSpecification 2875 ComputeDefaultedMoveAssignmentExceptionSpec(CXXRecordDecl *ClassDecl); 2876 2877 /// \brief Determine what sort of exception specification a defaulted 2878 /// destructor of a class will have. 2879 ImplicitExceptionSpecification 2880 ComputeDefaultedDtorExceptionSpec(CXXRecordDecl *ClassDecl); 2881 2882 /// \brief Determine if a special member function should have a deleted 2883 /// definition when it is defaulted. 2884 bool ShouldDeleteSpecialMember(CXXMethodDecl *MD, CXXSpecialMember CSM); 2885 2886 /// \brief Determine if a defaulted copy assignment operator ought to be 2887 /// deleted. 2888 bool ShouldDeleteCopyAssignmentOperator(CXXMethodDecl *MD); 2889 2890 /// \brief Determine if a defaulted move assignment operator ought to be 2891 /// deleted. 2892 bool ShouldDeleteMoveAssignmentOperator(CXXMethodDecl *MD); 2893 2894 /// \brief Determine if a defaulted destructor ought to be deleted. 2895 bool ShouldDeleteDestructor(CXXDestructorDecl *DD); 2896 2897 /// \brief Declare the implicit default constructor for the given class. 2898 /// 2899 /// \param ClassDecl The class declaration into which the implicit 2900 /// default constructor will be added. 2901 /// 2902 /// \returns The implicitly-declared default constructor. 2903 CXXConstructorDecl *DeclareImplicitDefaultConstructor( 2904 CXXRecordDecl *ClassDecl); 2905 2906 /// DefineImplicitDefaultConstructor - Checks for feasibility of 2907 /// defining this constructor as the default constructor. 2908 void DefineImplicitDefaultConstructor(SourceLocation CurrentLocation, 2909 CXXConstructorDecl *Constructor); 2910 2911 /// \brief Declare the implicit destructor for the given class. 2912 /// 2913 /// \param ClassDecl The class declaration into which the implicit 2914 /// destructor will be added. 2915 /// 2916 /// \returns The implicitly-declared destructor. 2917 CXXDestructorDecl *DeclareImplicitDestructor(CXXRecordDecl *ClassDecl); 2918 2919 /// DefineImplicitDestructor - Checks for feasibility of 2920 /// defining this destructor as the default destructor. 2921 void DefineImplicitDestructor(SourceLocation CurrentLocation, 2922 CXXDestructorDecl *Destructor); 2923 2924 /// \brief Build an exception spec for destructors that don't have one. 2925 /// 2926 /// C++11 says that user-defined destructors with no exception spec get one 2927 /// that looks as if the destructor was implicitly declared. 2928 void AdjustDestructorExceptionSpec(CXXRecordDecl *ClassDecl, 2929 CXXDestructorDecl *Destructor); 2930 2931 /// \brief Declare all inherited constructors for the given class. 2932 /// 2933 /// \param ClassDecl The class declaration into which the inherited 2934 /// constructors will be added. 2935 void DeclareInheritedConstructors(CXXRecordDecl *ClassDecl); 2936 2937 /// \brief Declare the implicit copy constructor for the given class. 2938 /// 2939 /// \param ClassDecl The class declaration into which the implicit 2940 /// copy constructor will be added. 2941 /// 2942 /// \returns The implicitly-declared copy constructor. 2943 CXXConstructorDecl *DeclareImplicitCopyConstructor(CXXRecordDecl *ClassDecl); 2944 2945 /// DefineImplicitCopyConstructor - Checks for feasibility of 2946 /// defining this constructor as the copy constructor. 2947 void DefineImplicitCopyConstructor(SourceLocation CurrentLocation, 2948 CXXConstructorDecl *Constructor); 2949 2950 /// \brief Declare the implicit move constructor for the given class. 2951 /// 2952 /// \param ClassDecl The Class declaration into which the implicit 2953 /// move constructor will be added. 2954 /// 2955 /// \returns The implicitly-declared move constructor, or NULL if it wasn't 2956 /// declared. 2957 CXXConstructorDecl *DeclareImplicitMoveConstructor(CXXRecordDecl *ClassDecl); 2958 2959 /// DefineImplicitMoveConstructor - Checks for feasibility of 2960 /// defining this constructor as the move constructor. 2961 void DefineImplicitMoveConstructor(SourceLocation CurrentLocation, 2962 CXXConstructorDecl *Constructor); 2963 2964 /// \brief Declare the implicit copy assignment operator for the given class. 2965 /// 2966 /// \param ClassDecl The class declaration into which the implicit 2967 /// copy assignment operator will be added. 2968 /// 2969 /// \returns The implicitly-declared copy assignment operator. 2970 CXXMethodDecl *DeclareImplicitCopyAssignment(CXXRecordDecl *ClassDecl); 2971 2972 /// \brief Defines an implicitly-declared copy assignment operator. 2973 void DefineImplicitCopyAssignment(SourceLocation CurrentLocation, 2974 CXXMethodDecl *MethodDecl); 2975 2976 /// \brief Declare the implicit move assignment operator for the given class. 2977 /// 2978 /// \param ClassDecl The Class declaration into which the implicit 2979 /// move assignment operator will be added. 2980 /// 2981 /// \returns The implicitly-declared move assignment operator, or NULL if it 2982 /// wasn't declared. 2983 CXXMethodDecl *DeclareImplicitMoveAssignment(CXXRecordDecl *ClassDecl); 2984 2985 /// \brief Defines an implicitly-declared move assignment operator. 2986 void DefineImplicitMoveAssignment(SourceLocation CurrentLocation, 2987 CXXMethodDecl *MethodDecl); 2988 2989 /// \brief Force the declaration of any implicitly-declared members of this 2990 /// class. 2991 void ForceDeclarationOfImplicitMembers(CXXRecordDecl *Class); 2992 2993 /// MaybeBindToTemporary - If the passed in expression has a record type with 2994 /// a non-trivial destructor, this will return CXXBindTemporaryExpr. Otherwise 2995 /// it simply returns the passed in expression. 2996 ExprResult MaybeBindToTemporary(Expr *E); 2997 2998 bool CompleteConstructorCall(CXXConstructorDecl *Constructor, 2999 MultiExprArg ArgsPtr, 3000 SourceLocation Loc, 3001 ASTOwningVector<Expr*> &ConvertedArgs); 3002 3003 ParsedType getDestructorName(SourceLocation TildeLoc, 3004 IdentifierInfo &II, SourceLocation NameLoc, 3005 Scope *S, CXXScopeSpec &SS, 3006 ParsedType ObjectType, 3007 bool EnteringContext); 3008 3009 ParsedType getDestructorType(const DeclSpec& DS, ParsedType ObjectType); 3010 3011 // Checks that reinterpret casts don't have undefined behavior. 3012 void CheckCompatibleReinterpretCast(QualType SrcType, QualType DestType, 3013 bool IsDereference, SourceRange Range); 3014 3015 /// ActOnCXXNamedCast - Parse {dynamic,static,reinterpret,const}_cast's. 3016 ExprResult ActOnCXXNamedCast(SourceLocation OpLoc, 3017 tok::TokenKind Kind, 3018 SourceLocation LAngleBracketLoc, 3019 Declarator &D, 3020 SourceLocation RAngleBracketLoc, 3021 SourceLocation LParenLoc, 3022 Expr *E, 3023 SourceLocation RParenLoc); 3024 3025 ExprResult BuildCXXNamedCast(SourceLocation OpLoc, 3026 tok::TokenKind Kind, 3027 TypeSourceInfo *Ty, 3028 Expr *E, 3029 SourceRange AngleBrackets, 3030 SourceRange Parens); 3031 3032 ExprResult BuildCXXTypeId(QualType TypeInfoType, 3033 SourceLocation TypeidLoc, 3034 TypeSourceInfo *Operand, 3035 SourceLocation RParenLoc); 3036 ExprResult BuildCXXTypeId(QualType TypeInfoType, 3037 SourceLocation TypeidLoc, 3038 Expr *Operand, 3039 SourceLocation RParenLoc); 3040 3041 /// ActOnCXXTypeid - Parse typeid( something ). 3042 ExprResult ActOnCXXTypeid(SourceLocation OpLoc, 3043 SourceLocation LParenLoc, bool isType, 3044 void *TyOrExpr, 3045 SourceLocation RParenLoc); 3046 3047 ExprResult BuildCXXUuidof(QualType TypeInfoType, 3048 SourceLocation TypeidLoc, 3049 TypeSourceInfo *Operand, 3050 SourceLocation RParenLoc); 3051 ExprResult BuildCXXUuidof(QualType TypeInfoType, 3052 SourceLocation TypeidLoc, 3053 Expr *Operand, 3054 SourceLocation RParenLoc); 3055 3056 /// ActOnCXXUuidof - Parse __uuidof( something ). 3057 ExprResult ActOnCXXUuidof(SourceLocation OpLoc, 3058 SourceLocation LParenLoc, bool isType, 3059 void *TyOrExpr, 3060 SourceLocation RParenLoc); 3061 3062 3063 //// ActOnCXXThis - Parse 'this' pointer. 3064 ExprResult ActOnCXXThis(SourceLocation loc); 3065 3066 /// \brief Try to retrieve the type of the 'this' pointer. 3067 /// 3068 /// \param Capture If true, capture 'this' in this context. 3069 /// 3070 /// \returns The type of 'this', if possible. Otherwise, returns a NULL type. 3071 QualType getCurrentThisType(); 3072 3073 /// \brief Make sure the value of 'this' is actually available in the current 3074 /// context, if it is a potentially evaluated context. 3075 void CheckCXXThisCapture(SourceLocation Loc); 3076 3077 /// ActOnCXXBoolLiteral - Parse {true,false} literals. 3078 ExprResult ActOnCXXBoolLiteral(SourceLocation OpLoc, tok::TokenKind Kind); 3079 3080 /// ActOnCXXNullPtrLiteral - Parse 'nullptr'. 3081 ExprResult ActOnCXXNullPtrLiteral(SourceLocation Loc); 3082 3083 //// ActOnCXXThrow - Parse throw expressions. 3084 ExprResult ActOnCXXThrow(Scope *S, SourceLocation OpLoc, Expr *expr); 3085 ExprResult BuildCXXThrow(SourceLocation OpLoc, Expr *Ex, 3086 bool IsThrownVarInScope); 3087 ExprResult CheckCXXThrowOperand(SourceLocation ThrowLoc, Expr *E, 3088 bool IsThrownVarInScope); 3089 3090 /// ActOnCXXTypeConstructExpr - Parse construction of a specified type. 3091 /// Can be interpreted either as function-style casting ("int(x)") 3092 /// or class type construction ("ClassType(x,y,z)") 3093 /// or creation of a value-initialized type ("int()"). 3094 ExprResult ActOnCXXTypeConstructExpr(ParsedType TypeRep, 3095 SourceLocation LParenLoc, 3096 MultiExprArg Exprs, 3097 SourceLocation RParenLoc); 3098 3099 ExprResult BuildCXXTypeConstructExpr(TypeSourceInfo *Type, 3100 SourceLocation LParenLoc, 3101 MultiExprArg Exprs, 3102 SourceLocation RParenLoc); 3103 3104 /// ActOnCXXNew - Parsed a C++ 'new' expression. 3105 ExprResult ActOnCXXNew(SourceLocation StartLoc, bool UseGlobal, 3106 SourceLocation PlacementLParen, 3107 MultiExprArg PlacementArgs, 3108 SourceLocation PlacementRParen, 3109 SourceRange TypeIdParens, Declarator &D, 3110 SourceLocation ConstructorLParen, 3111 MultiExprArg ConstructorArgs, 3112 SourceLocation ConstructorRParen); 3113 ExprResult BuildCXXNew(SourceLocation StartLoc, bool UseGlobal, 3114 SourceLocation PlacementLParen, 3115 MultiExprArg PlacementArgs, 3116 SourceLocation PlacementRParen, 3117 SourceRange TypeIdParens, 3118 QualType AllocType, 3119 TypeSourceInfo *AllocTypeInfo, 3120 Expr *ArraySize, 3121 SourceLocation ConstructorLParen, 3122 MultiExprArg ConstructorArgs, 3123 SourceLocation ConstructorRParen, 3124 bool TypeMayContainAuto = true); 3125 3126 bool CheckAllocatedType(QualType AllocType, SourceLocation Loc, 3127 SourceRange R); 3128 bool FindAllocationFunctions(SourceLocation StartLoc, SourceRange Range, 3129 bool UseGlobal, QualType AllocType, bool IsArray, 3130 Expr **PlaceArgs, unsigned NumPlaceArgs, 3131 FunctionDecl *&OperatorNew, 3132 FunctionDecl *&OperatorDelete); 3133 bool FindAllocationOverload(SourceLocation StartLoc, SourceRange Range, 3134 DeclarationName Name, Expr** Args, 3135 unsigned NumArgs, DeclContext *Ctx, 3136 bool AllowMissing, FunctionDecl *&Operator, 3137 bool Diagnose = true); 3138 void DeclareGlobalNewDelete(); 3139 void DeclareGlobalAllocationFunction(DeclarationName Name, QualType Return, 3140 QualType Argument, 3141 bool addMallocAttr = false); 3142 3143 bool FindDeallocationFunction(SourceLocation StartLoc, CXXRecordDecl *RD, 3144 DeclarationName Name, FunctionDecl* &Operator, 3145 bool Diagnose = true); 3146 3147 /// ActOnCXXDelete - Parsed a C++ 'delete' expression 3148 ExprResult ActOnCXXDelete(SourceLocation StartLoc, 3149 bool UseGlobal, bool ArrayForm, 3150 Expr *Operand); 3151 3152 DeclResult ActOnCXXConditionDeclaration(Scope *S, Declarator &D); 3153 ExprResult CheckConditionVariable(VarDecl *ConditionVar, 3154 SourceLocation StmtLoc, 3155 bool ConvertToBoolean); 3156 3157 ExprResult ActOnNoexceptExpr(SourceLocation KeyLoc, SourceLocation LParen, 3158 Expr *Operand, SourceLocation RParen); 3159 ExprResult BuildCXXNoexceptExpr(SourceLocation KeyLoc, Expr *Operand, 3160 SourceLocation RParen); 3161 3162 /// ActOnUnaryTypeTrait - Parsed one of the unary type trait support 3163 /// pseudo-functions. 3164 ExprResult ActOnUnaryTypeTrait(UnaryTypeTrait OTT, 3165 SourceLocation KWLoc, 3166 ParsedType Ty, 3167 SourceLocation RParen); 3168 3169 ExprResult BuildUnaryTypeTrait(UnaryTypeTrait OTT, 3170 SourceLocation KWLoc, 3171 TypeSourceInfo *T, 3172 SourceLocation RParen); 3173 3174 /// ActOnBinaryTypeTrait - Parsed one of the bianry type trait support 3175 /// pseudo-functions. 3176 ExprResult ActOnBinaryTypeTrait(BinaryTypeTrait OTT, 3177 SourceLocation KWLoc, 3178 ParsedType LhsTy, 3179 ParsedType RhsTy, 3180 SourceLocation RParen); 3181 3182 ExprResult BuildBinaryTypeTrait(BinaryTypeTrait BTT, 3183 SourceLocation KWLoc, 3184 TypeSourceInfo *LhsT, 3185 TypeSourceInfo *RhsT, 3186 SourceLocation RParen); 3187 3188 /// ActOnArrayTypeTrait - Parsed one of the bianry type trait support 3189 /// pseudo-functions. 3190 ExprResult ActOnArrayTypeTrait(ArrayTypeTrait ATT, 3191 SourceLocation KWLoc, 3192 ParsedType LhsTy, 3193 Expr *DimExpr, 3194 SourceLocation RParen); 3195 3196 ExprResult BuildArrayTypeTrait(ArrayTypeTrait ATT, 3197 SourceLocation KWLoc, 3198 TypeSourceInfo *TSInfo, 3199 Expr *DimExpr, 3200 SourceLocation RParen); 3201 3202 /// ActOnExpressionTrait - Parsed one of the unary type trait support 3203 /// pseudo-functions. 3204 ExprResult ActOnExpressionTrait(ExpressionTrait OET, 3205 SourceLocation KWLoc, 3206 Expr *Queried, 3207 SourceLocation RParen); 3208 3209 ExprResult BuildExpressionTrait(ExpressionTrait OET, 3210 SourceLocation KWLoc, 3211 Expr *Queried, 3212 SourceLocation RParen); 3213 3214 ExprResult ActOnStartCXXMemberReference(Scope *S, 3215 Expr *Base, 3216 SourceLocation OpLoc, 3217 tok::TokenKind OpKind, 3218 ParsedType &ObjectType, 3219 bool &MayBePseudoDestructor); 3220 3221 ExprResult DiagnoseDtorReference(SourceLocation NameLoc, Expr *MemExpr); 3222 3223 ExprResult BuildPseudoDestructorExpr(Expr *Base, 3224 SourceLocation OpLoc, 3225 tok::TokenKind OpKind, 3226 const CXXScopeSpec &SS, 3227 TypeSourceInfo *ScopeType, 3228 SourceLocation CCLoc, 3229 SourceLocation TildeLoc, 3230 PseudoDestructorTypeStorage DestroyedType, 3231 bool HasTrailingLParen); 3232 3233 ExprResult ActOnPseudoDestructorExpr(Scope *S, Expr *Base, 3234 SourceLocation OpLoc, 3235 tok::TokenKind OpKind, 3236 CXXScopeSpec &SS, 3237 UnqualifiedId &FirstTypeName, 3238 SourceLocation CCLoc, 3239 SourceLocation TildeLoc, 3240 UnqualifiedId &SecondTypeName, 3241 bool HasTrailingLParen); 3242 3243 ExprResult ActOnPseudoDestructorExpr(Scope *S, Expr *Base, 3244 SourceLocation OpLoc, 3245 tok::TokenKind OpKind, 3246 SourceLocation TildeLoc, 3247 const DeclSpec& DS, 3248 bool HasTrailingLParen); 3249 3250 /// MaybeCreateExprWithCleanups - If the current full-expression 3251 /// requires any cleanups, surround it with a ExprWithCleanups node. 3252 /// Otherwise, just returns the passed-in expression. 3253 Expr *MaybeCreateExprWithCleanups(Expr *SubExpr); 3254 Stmt *MaybeCreateStmtWithCleanups(Stmt *SubStmt); 3255 ExprResult MaybeCreateExprWithCleanups(ExprResult SubExpr); 3256 3257 ExprResult ActOnFinishFullExpr(Expr *Expr); 3258 StmtResult ActOnFinishFullStmt(Stmt *Stmt); 3259 3260 // Marks SS invalid if it represents an incomplete type. 3261 bool RequireCompleteDeclContext(CXXScopeSpec &SS, DeclContext *DC); 3262 3263 DeclContext *computeDeclContext(QualType T); 3264 DeclContext *computeDeclContext(const CXXScopeSpec &SS, 3265 bool EnteringContext = false); 3266 bool isDependentScopeSpecifier(const CXXScopeSpec &SS); 3267 CXXRecordDecl *getCurrentInstantiationOf(NestedNameSpecifier *NNS); 3268 bool isUnknownSpecialization(const CXXScopeSpec &SS); 3269 3270 /// \brief The parser has parsed a global nested-name-specifier '::'. 3271 /// 3272 /// \param S The scope in which this nested-name-specifier occurs. 3273 /// 3274 /// \param CCLoc The location of the '::'. 3275 /// 3276 /// \param SS The nested-name-specifier, which will be updated in-place 3277 /// to reflect the parsed nested-name-specifier. 3278 /// 3279 /// \returns true if an error occurred, false otherwise. 3280 bool ActOnCXXGlobalScopeSpecifier(Scope *S, SourceLocation CCLoc, 3281 CXXScopeSpec &SS); 3282 3283 bool isAcceptableNestedNameSpecifier(NamedDecl *SD); 3284 NamedDecl *FindFirstQualifierInScope(Scope *S, NestedNameSpecifier *NNS); 3285 3286 bool isNonTypeNestedNameSpecifier(Scope *S, CXXScopeSpec &SS, 3287 SourceLocation IdLoc, 3288 IdentifierInfo &II, 3289 ParsedType ObjectType); 3290 3291 bool BuildCXXNestedNameSpecifier(Scope *S, 3292 IdentifierInfo &Identifier, 3293 SourceLocation IdentifierLoc, 3294 SourceLocation CCLoc, 3295 QualType ObjectType, 3296 bool EnteringContext, 3297 CXXScopeSpec &SS, 3298 NamedDecl *ScopeLookupResult, 3299 bool ErrorRecoveryLookup); 3300 3301 /// \brief The parser has parsed a nested-name-specifier 'identifier::'. 3302 /// 3303 /// \param S The scope in which this nested-name-specifier occurs. 3304 /// 3305 /// \param Identifier The identifier preceding the '::'. 3306 /// 3307 /// \param IdentifierLoc The location of the identifier. 3308 /// 3309 /// \param CCLoc The location of the '::'. 3310 /// 3311 /// \param ObjectType The type of the object, if we're parsing 3312 /// nested-name-specifier in a member access expression. 3313 /// 3314 /// \param EnteringContext Whether we're entering the context nominated by 3315 /// this nested-name-specifier. 3316 /// 3317 /// \param SS The nested-name-specifier, which is both an input 3318 /// parameter (the nested-name-specifier before this type) and an 3319 /// output parameter (containing the full nested-name-specifier, 3320 /// including this new type). 3321 /// 3322 /// \returns true if an error occurred, false otherwise. 3323 bool ActOnCXXNestedNameSpecifier(Scope *S, 3324 IdentifierInfo &Identifier, 3325 SourceLocation IdentifierLoc, 3326 SourceLocation CCLoc, 3327 ParsedType ObjectType, 3328 bool EnteringContext, 3329 CXXScopeSpec &SS); 3330 3331 bool ActOnCXXNestedNameSpecifierDecltype(CXXScopeSpec &SS, 3332 const DeclSpec &DS, 3333 SourceLocation ColonColonLoc); 3334 3335 bool IsInvalidUnlessNestedName(Scope *S, CXXScopeSpec &SS, 3336 IdentifierInfo &Identifier, 3337 SourceLocation IdentifierLoc, 3338 SourceLocation ColonLoc, 3339 ParsedType ObjectType, 3340 bool EnteringContext); 3341 3342 /// \brief The parser has parsed a nested-name-specifier 3343 /// 'template[opt] template-name < template-args >::'. 3344 /// 3345 /// \param S The scope in which this nested-name-specifier occurs. 3346 /// 3347 /// \param TemplateLoc The location of the 'template' keyword, if any. 3348 /// 3349 /// \param SS The nested-name-specifier, which is both an input 3350 /// parameter (the nested-name-specifier before this type) and an 3351 /// output parameter (containing the full nested-name-specifier, 3352 /// including this new type). 3353 /// 3354 /// \param TemplateLoc the location of the 'template' keyword, if any. 3355 /// \param TemplateName The template name. 3356 /// \param TemplateNameLoc The location of the template name. 3357 /// \param LAngleLoc The location of the opening angle bracket ('<'). 3358 /// \param TemplateArgs The template arguments. 3359 /// \param RAngleLoc The location of the closing angle bracket ('>'). 3360 /// \param CCLoc The location of the '::'. 3361 3362 /// \param EnteringContext Whether we're entering the context of the 3363 /// nested-name-specifier. 3364 /// 3365 /// 3366 /// \returns true if an error occurred, false otherwise. 3367 bool ActOnCXXNestedNameSpecifier(Scope *S, 3368 SourceLocation TemplateLoc, 3369 CXXScopeSpec &SS, 3370 TemplateTy Template, 3371 SourceLocation TemplateNameLoc, 3372 SourceLocation LAngleLoc, 3373 ASTTemplateArgsPtr TemplateArgs, 3374 SourceLocation RAngleLoc, 3375 SourceLocation CCLoc, 3376 bool EnteringContext); 3377 3378 /// \brief Given a C++ nested-name-specifier, produce an annotation value 3379 /// that the parser can use later to reconstruct the given 3380 /// nested-name-specifier. 3381 /// 3382 /// \param SS A nested-name-specifier. 3383 /// 3384 /// \returns A pointer containing all of the information in the 3385 /// nested-name-specifier \p SS. 3386 void *SaveNestedNameSpecifierAnnotation(CXXScopeSpec &SS); 3387 3388 /// \brief Given an annotation pointer for a nested-name-specifier, restore 3389 /// the nested-name-specifier structure. 3390 /// 3391 /// \param Annotation The annotation pointer, produced by 3392 /// \c SaveNestedNameSpecifierAnnotation(). 3393 /// 3394 /// \param AnnotationRange The source range corresponding to the annotation. 3395 /// 3396 /// \param SS The nested-name-specifier that will be updated with the contents 3397 /// of the annotation pointer. 3398 void RestoreNestedNameSpecifierAnnotation(void *Annotation, 3399 SourceRange AnnotationRange, 3400 CXXScopeSpec &SS); 3401 3402 bool ShouldEnterDeclaratorScope(Scope *S, const CXXScopeSpec &SS); 3403 3404 /// ActOnCXXEnterDeclaratorScope - Called when a C++ scope specifier (global 3405 /// scope or nested-name-specifier) is parsed, part of a declarator-id. 3406 /// After this method is called, according to [C++ 3.4.3p3], names should be 3407 /// looked up in the declarator-id's scope, until the declarator is parsed and 3408 /// ActOnCXXExitDeclaratorScope is called. 3409 /// The 'SS' should be a non-empty valid CXXScopeSpec. 3410 bool ActOnCXXEnterDeclaratorScope(Scope *S, CXXScopeSpec &SS); 3411 3412 /// ActOnCXXExitDeclaratorScope - Called when a declarator that previously 3413 /// invoked ActOnCXXEnterDeclaratorScope(), is finished. 'SS' is the same 3414 /// CXXScopeSpec that was passed to ActOnCXXEnterDeclaratorScope as well. 3415 /// Used to indicate that names should revert to being looked up in the 3416 /// defining scope. 3417 void ActOnCXXExitDeclaratorScope(Scope *S, const CXXScopeSpec &SS); 3418 3419 /// ActOnCXXEnterDeclInitializer - Invoked when we are about to parse an 3420 /// initializer for the declaration 'Dcl'. 3421 /// After this method is called, according to [C++ 3.4.1p13], if 'Dcl' is a 3422 /// static data member of class X, names should be looked up in the scope of 3423 /// class X. 3424 void ActOnCXXEnterDeclInitializer(Scope *S, Decl *Dcl); 3425 3426 /// ActOnCXXExitDeclInitializer - Invoked after we are finished parsing an 3427 /// initializer for the declaration 'Dcl'. 3428 void ActOnCXXExitDeclInitializer(Scope *S, Decl *Dcl); 3429 3430 /// ActOnStartOfLambdaDefinition - This is called just before we start 3431 /// parsing the body of a lambda; it analyzes the explicit captures and 3432 /// arguments, and sets up various data-structures for the body of the 3433 /// lambda. 3434 void ActOnStartOfLambdaDefinition(LambdaIntroducer &Intro, 3435 Declarator &ParamInfo, Scope *CurScope); 3436 3437 /// ActOnLambdaError - If there is an error parsing a lambda, this callback 3438 /// is invoked to pop the information about the lambda. 3439 void ActOnLambdaError(SourceLocation StartLoc, Scope *CurScope); 3440 3441 /// ActOnLambdaExpr - This is called when the body of a lambda expression 3442 /// was successfully completed. 3443 ExprResult ActOnLambdaExpr(SourceLocation StartLoc, Stmt *Body, 3444 Scope *CurScope); 3445 3446 // ParseObjCStringLiteral - Parse Objective-C string literals. 3447 ExprResult ParseObjCStringLiteral(SourceLocation *AtLocs, 3448 Expr **Strings, 3449 unsigned NumStrings); 3450 3451 ExprResult BuildObjCEncodeExpression(SourceLocation AtLoc, 3452 TypeSourceInfo *EncodedTypeInfo, 3453 SourceLocation RParenLoc); 3454 ExprResult BuildCXXMemberCallExpr(Expr *Exp, NamedDecl *FoundDecl, 3455 CXXMethodDecl *Method, 3456 bool HadMultipleCandidates); 3457 3458 ExprResult ParseObjCEncodeExpression(SourceLocation AtLoc, 3459 SourceLocation EncodeLoc, 3460 SourceLocation LParenLoc, 3461 ParsedType Ty, 3462 SourceLocation RParenLoc); 3463 3464 // ParseObjCSelectorExpression - Build selector expression for @selector 3465 ExprResult ParseObjCSelectorExpression(Selector Sel, 3466 SourceLocation AtLoc, 3467 SourceLocation SelLoc, 3468 SourceLocation LParenLoc, 3469 SourceLocation RParenLoc); 3470 3471 // ParseObjCProtocolExpression - Build protocol expression for @protocol 3472 ExprResult ParseObjCProtocolExpression(IdentifierInfo * ProtocolName, 3473 SourceLocation AtLoc, 3474 SourceLocation ProtoLoc, 3475 SourceLocation LParenLoc, 3476 SourceLocation RParenLoc); 3477 3478 //===--------------------------------------------------------------------===// 3479 // C++ Declarations 3480 // 3481 Decl *ActOnStartLinkageSpecification(Scope *S, 3482 SourceLocation ExternLoc, 3483 SourceLocation LangLoc, 3484 StringRef Lang, 3485 SourceLocation LBraceLoc); 3486 Decl *ActOnFinishLinkageSpecification(Scope *S, 3487 Decl *LinkageSpec, 3488 SourceLocation RBraceLoc); 3489 3490 3491 //===--------------------------------------------------------------------===// 3492 // C++ Classes 3493 // 3494 bool isCurrentClassName(const IdentifierInfo &II, Scope *S, 3495 const CXXScopeSpec *SS = 0); 3496 3497 bool ActOnAccessSpecifier(AccessSpecifier Access, 3498 SourceLocation ASLoc, 3499 SourceLocation ColonLoc, 3500 AttributeList *Attrs = 0); 3501 3502 Decl *ActOnCXXMemberDeclarator(Scope *S, AccessSpecifier AS, 3503 Declarator &D, 3504 MultiTemplateParamsArg TemplateParameterLists, 3505 Expr *BitfieldWidth, const VirtSpecifiers &VS, 3506 bool HasDeferredInit); 3507 void ActOnCXXInClassMemberInitializer(Decl *VarDecl, SourceLocation EqualLoc, 3508 Expr *Init); 3509 3510 MemInitResult ActOnMemInitializer(Decl *ConstructorD, 3511 Scope *S, 3512 CXXScopeSpec &SS, 3513 IdentifierInfo *MemberOrBase, 3514 ParsedType TemplateTypeTy, 3515 const DeclSpec &DS, 3516 SourceLocation IdLoc, 3517 SourceLocation LParenLoc, 3518 Expr **Args, unsigned NumArgs, 3519 SourceLocation RParenLoc, 3520 SourceLocation EllipsisLoc); 3521 3522 MemInitResult ActOnMemInitializer(Decl *ConstructorD, 3523 Scope *S, 3524 CXXScopeSpec &SS, 3525 IdentifierInfo *MemberOrBase, 3526 ParsedType TemplateTypeTy, 3527 const DeclSpec &DS, 3528 SourceLocation IdLoc, 3529 Expr *InitList, 3530 SourceLocation EllipsisLoc); 3531 3532 MemInitResult BuildMemInitializer(Decl *ConstructorD, 3533 Scope *S, 3534 CXXScopeSpec &SS, 3535 IdentifierInfo *MemberOrBase, 3536 ParsedType TemplateTypeTy, 3537 const DeclSpec &DS, 3538 SourceLocation IdLoc, 3539 const MultiInitializer &Init, 3540 SourceLocation EllipsisLoc); 3541 3542 MemInitResult BuildMemberInitializer(ValueDecl *Member, 3543 const MultiInitializer &Args, 3544 SourceLocation IdLoc); 3545 3546 MemInitResult BuildBaseInitializer(QualType BaseType, 3547 TypeSourceInfo *BaseTInfo, 3548 const MultiInitializer &Args, 3549 CXXRecordDecl *ClassDecl, 3550 SourceLocation EllipsisLoc); 3551 3552 MemInitResult BuildDelegatingInitializer(TypeSourceInfo *TInfo, 3553 const MultiInitializer &Args, 3554 CXXRecordDecl *ClassDecl); 3555 3556 bool SetDelegatingInitializer(CXXConstructorDecl *Constructor, 3557 CXXCtorInitializer *Initializer); 3558 3559 bool SetCtorInitializers(CXXConstructorDecl *Constructor, 3560 CXXCtorInitializer **Initializers, 3561 unsigned NumInitializers, bool AnyErrors); 3562 3563 void SetIvarInitializers(ObjCImplementationDecl *ObjCImplementation); 3564 3565 3566 /// MarkBaseAndMemberDestructorsReferenced - Given a record decl, 3567 /// mark all the non-trivial destructors of its members and bases as 3568 /// referenced. 3569 void MarkBaseAndMemberDestructorsReferenced(SourceLocation Loc, 3570 CXXRecordDecl *Record); 3571 3572 /// \brief The list of classes whose vtables have been used within 3573 /// this translation unit, and the source locations at which the 3574 /// first use occurred. 3575 typedef std::pair<CXXRecordDecl*, SourceLocation> VTableUse; 3576 3577 /// \brief The list of vtables that are required but have not yet been 3578 /// materialized. 3579 SmallVector<VTableUse, 16> VTableUses; 3580 3581 /// \brief The set of classes whose vtables have been used within 3582 /// this translation unit, and a bit that will be true if the vtable is 3583 /// required to be emitted (otherwise, it should be emitted only if needed 3584 /// by code generation). 3585 llvm::DenseMap<CXXRecordDecl *, bool> VTablesUsed; 3586 3587 /// \brief Load any externally-stored vtable uses. 3588 void LoadExternalVTableUses(); 3589 3590 typedef LazyVector<CXXRecordDecl *, ExternalSemaSource, 3591 &ExternalSemaSource::ReadDynamicClasses, 2, 2> 3592 DynamicClassesType; 3593 3594 /// \brief A list of all of the dynamic classes in this translation 3595 /// unit. 3596 DynamicClassesType DynamicClasses; 3597 3598 /// \brief Note that the vtable for the given class was used at the 3599 /// given location. 3600 void MarkVTableUsed(SourceLocation Loc, CXXRecordDecl *Class, 3601 bool DefinitionRequired = false); 3602 3603 /// MarkVirtualMembersReferenced - Will mark all members of the given 3604 /// CXXRecordDecl referenced. 3605 void MarkVirtualMembersReferenced(SourceLocation Loc, 3606 const CXXRecordDecl *RD); 3607 3608 /// \brief Define all of the vtables that have been used in this 3609 /// translation unit and reference any virtual members used by those 3610 /// vtables. 3611 /// 3612 /// \returns true if any work was done, false otherwise. 3613 bool DefineUsedVTables(); 3614 3615 void AddImplicitlyDeclaredMembersToClass(CXXRecordDecl *ClassDecl); 3616 3617 void ActOnMemInitializers(Decl *ConstructorDecl, 3618 SourceLocation ColonLoc, 3619 CXXCtorInitializer **MemInits, 3620 unsigned NumMemInits, 3621 bool AnyErrors); 3622 3623 void CheckCompletedCXXClass(CXXRecordDecl *Record); 3624 void ActOnFinishCXXMemberSpecification(Scope* S, SourceLocation RLoc, 3625 Decl *TagDecl, 3626 SourceLocation LBrac, 3627 SourceLocation RBrac, 3628 AttributeList *AttrList); 3629 3630 void ActOnReenterTemplateScope(Scope *S, Decl *Template); 3631 void ActOnReenterDeclaratorTemplateScope(Scope *S, DeclaratorDecl *D); 3632 void ActOnStartDelayedMemberDeclarations(Scope *S, Decl *Record); 3633 void ActOnStartDelayedCXXMethodDeclaration(Scope *S, Decl *Method); 3634 void ActOnDelayedCXXMethodParameter(Scope *S, Decl *Param); 3635 void ActOnFinishDelayedMemberDeclarations(Scope *S, Decl *Record); 3636 void ActOnFinishDelayedCXXMethodDeclaration(Scope *S, Decl *Method); 3637 void ActOnFinishDelayedMemberInitializers(Decl *Record); 3638 void MarkAsLateParsedTemplate(FunctionDecl *FD, bool Flag = true); 3639 bool IsInsideALocalClassWithinATemplateFunction(); 3640 3641 Decl *ActOnStaticAssertDeclaration(SourceLocation StaticAssertLoc, 3642 Expr *AssertExpr, 3643 Expr *AssertMessageExpr, 3644 SourceLocation RParenLoc); 3645 3646 FriendDecl *CheckFriendTypeDecl(SourceLocation Loc, 3647 SourceLocation FriendLoc, 3648 TypeSourceInfo *TSInfo); 3649 Decl *ActOnFriendTypeDecl(Scope *S, const DeclSpec &DS, 3650 MultiTemplateParamsArg TemplateParams); 3651 Decl *ActOnFriendFunctionDecl(Scope *S, Declarator &D, 3652 MultiTemplateParamsArg TemplateParams); 3653 3654 QualType CheckConstructorDeclarator(Declarator &D, QualType R, 3655 StorageClass& SC); 3656 void CheckConstructor(CXXConstructorDecl *Constructor); 3657 QualType CheckDestructorDeclarator(Declarator &D, QualType R, 3658 StorageClass& SC); 3659 bool CheckDestructor(CXXDestructorDecl *Destructor); 3660 void CheckConversionDeclarator(Declarator &D, QualType &R, 3661 StorageClass& SC); 3662 Decl *ActOnConversionDeclarator(CXXConversionDecl *Conversion); 3663 3664 void CheckExplicitlyDefaultedMethods(CXXRecordDecl *Record); 3665 void CheckExplicitlyDefaultedDefaultConstructor(CXXConstructorDecl *Ctor); 3666 void CheckExplicitlyDefaultedCopyConstructor(CXXConstructorDecl *Ctor); 3667 void CheckExplicitlyDefaultedCopyAssignment(CXXMethodDecl *Method); 3668 void CheckExplicitlyDefaultedMoveConstructor(CXXConstructorDecl *Ctor); 3669 void CheckExplicitlyDefaultedMoveAssignment(CXXMethodDecl *Method); 3670 void CheckExplicitlyDefaultedDestructor(CXXDestructorDecl *Dtor); 3671 3672 //===--------------------------------------------------------------------===// 3673 // C++ Derived Classes 3674 // 3675 3676 /// ActOnBaseSpecifier - Parsed a base specifier 3677 CXXBaseSpecifier *CheckBaseSpecifier(CXXRecordDecl *Class, 3678 SourceRange SpecifierRange, 3679 bool Virtual, AccessSpecifier Access, 3680 TypeSourceInfo *TInfo, 3681 SourceLocation EllipsisLoc); 3682 3683 BaseResult ActOnBaseSpecifier(Decl *classdecl, 3684 SourceRange SpecifierRange, 3685 bool Virtual, AccessSpecifier Access, 3686 ParsedType basetype, 3687 SourceLocation BaseLoc, 3688 SourceLocation EllipsisLoc); 3689 3690 bool AttachBaseSpecifiers(CXXRecordDecl *Class, CXXBaseSpecifier **Bases, 3691 unsigned NumBases); 3692 void ActOnBaseSpecifiers(Decl *ClassDecl, CXXBaseSpecifier **Bases, 3693 unsigned NumBases); 3694 3695 bool IsDerivedFrom(QualType Derived, QualType Base); 3696 bool IsDerivedFrom(QualType Derived, QualType Base, CXXBasePaths &Paths); 3697 3698 // FIXME: I don't like this name. 3699 void BuildBasePathArray(const CXXBasePaths &Paths, CXXCastPath &BasePath); 3700 3701 bool BasePathInvolvesVirtualBase(const CXXCastPath &BasePath); 3702 3703 bool CheckDerivedToBaseConversion(QualType Derived, QualType Base, 3704 SourceLocation Loc, SourceRange Range, 3705 CXXCastPath *BasePath = 0, 3706 bool IgnoreAccess = false); 3707 bool CheckDerivedToBaseConversion(QualType Derived, QualType Base, 3708 unsigned InaccessibleBaseID, 3709 unsigned AmbigiousBaseConvID, 3710 SourceLocation Loc, SourceRange Range, 3711 DeclarationName Name, 3712 CXXCastPath *BasePath); 3713 3714 std::string getAmbiguousPathsDisplayString(CXXBasePaths &Paths); 3715 3716 /// CheckOverridingFunctionReturnType - Checks whether the return types are 3717 /// covariant, according to C++ [class.virtual]p5. 3718 bool CheckOverridingFunctionReturnType(const CXXMethodDecl *New, 3719 const CXXMethodDecl *Old); 3720 3721 /// CheckOverridingFunctionExceptionSpec - Checks whether the exception 3722 /// spec is a subset of base spec. 3723 bool CheckOverridingFunctionExceptionSpec(const CXXMethodDecl *New, 3724 const CXXMethodDecl *Old); 3725 3726 bool CheckPureMethod(CXXMethodDecl *Method, SourceRange InitRange); 3727 3728 /// CheckOverrideControl - Check C++0x override control semantics. 3729 void CheckOverrideControl(const Decl *D); 3730 3731 /// CheckForFunctionMarkedFinal - Checks whether a virtual member function 3732 /// overrides a virtual member function marked 'final', according to 3733 /// C++0x [class.virtual]p3. 3734 bool CheckIfOverriddenFunctionIsMarkedFinal(const CXXMethodDecl *New, 3735 const CXXMethodDecl *Old); 3736 3737 3738 //===--------------------------------------------------------------------===// 3739 // C++ Access Control 3740 // 3741 3742 enum AccessResult { 3743 AR_accessible, 3744 AR_inaccessible, 3745 AR_dependent, 3746 AR_delayed 3747 }; 3748 3749 bool SetMemberAccessSpecifier(NamedDecl *MemberDecl, 3750 NamedDecl *PrevMemberDecl, 3751 AccessSpecifier LexicalAS); 3752 3753 AccessResult CheckUnresolvedMemberAccess(UnresolvedMemberExpr *E, 3754 DeclAccessPair FoundDecl); 3755 AccessResult CheckUnresolvedLookupAccess(UnresolvedLookupExpr *E, 3756 DeclAccessPair FoundDecl); 3757 AccessResult CheckAllocationAccess(SourceLocation OperatorLoc, 3758 SourceRange PlacementRange, 3759 CXXRecordDecl *NamingClass, 3760 DeclAccessPair FoundDecl, 3761 bool Diagnose = true); 3762 AccessResult CheckConstructorAccess(SourceLocation Loc, 3763 CXXConstructorDecl *D, 3764 const InitializedEntity &Entity, 3765 AccessSpecifier Access, 3766 bool IsCopyBindingRefToTemp = false); 3767 AccessResult CheckConstructorAccess(SourceLocation Loc, 3768 CXXConstructorDecl *D, 3769 AccessSpecifier Access, 3770 PartialDiagnostic PD); 3771 AccessResult CheckDestructorAccess(SourceLocation Loc, 3772 CXXDestructorDecl *Dtor, 3773 const PartialDiagnostic &PDiag); 3774 AccessResult CheckDirectMemberAccess(SourceLocation Loc, 3775 NamedDecl *D, 3776 const PartialDiagnostic &PDiag); 3777 AccessResult CheckMemberOperatorAccess(SourceLocation Loc, 3778 Expr *ObjectExpr, 3779 Expr *ArgExpr, 3780 DeclAccessPair FoundDecl); 3781 AccessResult CheckAddressOfMemberAccess(Expr *OvlExpr, 3782 DeclAccessPair FoundDecl); 3783 AccessResult CheckBaseClassAccess(SourceLocation AccessLoc, 3784 QualType Base, QualType Derived, 3785 const CXXBasePath &Path, 3786 unsigned DiagID, 3787 bool ForceCheck = false, 3788 bool ForceUnprivileged = false); 3789 void CheckLookupAccess(const LookupResult &R); 3790 bool IsSimplyAccessible(NamedDecl *decl, DeclContext *Ctx); 3791 3792 void HandleDependentAccessCheck(const DependentDiagnostic &DD, 3793 const MultiLevelTemplateArgumentList &TemplateArgs); 3794 void PerformDependentDiagnostics(const DeclContext *Pattern, 3795 const MultiLevelTemplateArgumentList &TemplateArgs); 3796 3797 void HandleDelayedAccessCheck(sema::DelayedDiagnostic &DD, Decl *Ctx); 3798 3799 /// A flag to suppress access checking. 3800 bool SuppressAccessChecking; 3801 3802 /// \brief When true, access checking violations are treated as SFINAE 3803 /// failures rather than hard errors. 3804 bool AccessCheckingSFINAE; 3805 3806 void ActOnStartSuppressingAccessChecks(); 3807 void ActOnStopSuppressingAccessChecks(); 3808 3809 enum AbstractDiagSelID { 3810 AbstractNone = -1, 3811 AbstractReturnType, 3812 AbstractParamType, 3813 AbstractVariableType, 3814 AbstractFieldType, 3815 AbstractArrayType 3816 }; 3817 3818 bool RequireNonAbstractType(SourceLocation Loc, QualType T, 3819 const PartialDiagnostic &PD); 3820 void DiagnoseAbstractType(const CXXRecordDecl *RD); 3821 3822 bool RequireNonAbstractType(SourceLocation Loc, QualType T, unsigned DiagID, 3823 AbstractDiagSelID SelID = AbstractNone); 3824 3825 //===--------------------------------------------------------------------===// 3826 // C++ Overloaded Operators [C++ 13.5] 3827 // 3828 3829 bool CheckOverloadedOperatorDeclaration(FunctionDecl *FnDecl); 3830 3831 bool CheckLiteralOperatorDeclaration(FunctionDecl *FnDecl); 3832 3833 //===--------------------------------------------------------------------===// 3834 // C++ Templates [C++ 14] 3835 // 3836 void FilterAcceptableTemplateNames(LookupResult &R); 3837 bool hasAnyAcceptableTemplateNames(LookupResult &R); 3838 3839 void LookupTemplateName(LookupResult &R, Scope *S, CXXScopeSpec &SS, 3840 QualType ObjectType, bool EnteringContext, 3841 bool &MemberOfUnknownSpecialization); 3842 3843 TemplateNameKind isTemplateName(Scope *S, 3844 CXXScopeSpec &SS, 3845 bool hasTemplateKeyword, 3846 UnqualifiedId &Name, 3847 ParsedType ObjectType, 3848 bool EnteringContext, 3849 TemplateTy &Template, 3850 bool &MemberOfUnknownSpecialization); 3851 3852 bool DiagnoseUnknownTemplateName(const IdentifierInfo &II, 3853 SourceLocation IILoc, 3854 Scope *S, 3855 const CXXScopeSpec *SS, 3856 TemplateTy &SuggestedTemplate, 3857 TemplateNameKind &SuggestedKind); 3858 3859 void DiagnoseTemplateParameterShadow(SourceLocation Loc, Decl *PrevDecl); 3860 TemplateDecl *AdjustDeclIfTemplate(Decl *&Decl); 3861 3862 Decl *ActOnTypeParameter(Scope *S, bool Typename, bool Ellipsis, 3863 SourceLocation EllipsisLoc, 3864 SourceLocation KeyLoc, 3865 IdentifierInfo *ParamName, 3866 SourceLocation ParamNameLoc, 3867 unsigned Depth, unsigned Position, 3868 SourceLocation EqualLoc, 3869 ParsedType DefaultArg); 3870 3871 QualType CheckNonTypeTemplateParameterType(QualType T, SourceLocation Loc); 3872 Decl *ActOnNonTypeTemplateParameter(Scope *S, Declarator &D, 3873 unsigned Depth, 3874 unsigned Position, 3875 SourceLocation EqualLoc, 3876 Expr *DefaultArg); 3877 Decl *ActOnTemplateTemplateParameter(Scope *S, 3878 SourceLocation TmpLoc, 3879 TemplateParameterList *Params, 3880 SourceLocation EllipsisLoc, 3881 IdentifierInfo *ParamName, 3882 SourceLocation ParamNameLoc, 3883 unsigned Depth, 3884 unsigned Position, 3885 SourceLocation EqualLoc, 3886 ParsedTemplateArgument DefaultArg); 3887 3888 TemplateParameterList * 3889 ActOnTemplateParameterList(unsigned Depth, 3890 SourceLocation ExportLoc, 3891 SourceLocation TemplateLoc, 3892 SourceLocation LAngleLoc, 3893 Decl **Params, unsigned NumParams, 3894 SourceLocation RAngleLoc); 3895 3896 /// \brief The context in which we are checking a template parameter 3897 /// list. 3898 enum TemplateParamListContext { 3899 TPC_ClassTemplate, 3900 TPC_FunctionTemplate, 3901 TPC_ClassTemplateMember, 3902 TPC_FriendFunctionTemplate, 3903 TPC_FriendFunctionTemplateDefinition, 3904 TPC_TypeAliasTemplate 3905 }; 3906 3907 bool CheckTemplateParameterList(TemplateParameterList *NewParams, 3908 TemplateParameterList *OldParams, 3909 TemplateParamListContext TPC); 3910 TemplateParameterList * 3911 MatchTemplateParametersToScopeSpecifier(SourceLocation DeclStartLoc, 3912 SourceLocation DeclLoc, 3913 const CXXScopeSpec &SS, 3914 TemplateParameterList **ParamLists, 3915 unsigned NumParamLists, 3916 bool IsFriend, 3917 bool &IsExplicitSpecialization, 3918 bool &Invalid); 3919 3920 DeclResult CheckClassTemplate(Scope *S, unsigned TagSpec, TagUseKind TUK, 3921 SourceLocation KWLoc, CXXScopeSpec &SS, 3922 IdentifierInfo *Name, SourceLocation NameLoc, 3923 AttributeList *Attr, 3924 TemplateParameterList *TemplateParams, 3925 AccessSpecifier AS, 3926 SourceLocation ModulePrivateLoc, 3927 unsigned NumOuterTemplateParamLists, 3928 TemplateParameterList **OuterTemplateParamLists); 3929 3930 void translateTemplateArguments(const ASTTemplateArgsPtr &In, 3931 TemplateArgumentListInfo &Out); 3932 3933 void NoteAllFoundTemplates(TemplateName Name); 3934 3935 QualType CheckTemplateIdType(TemplateName Template, 3936 SourceLocation TemplateLoc, 3937 TemplateArgumentListInfo &TemplateArgs); 3938 3939 TypeResult 3940 ActOnTemplateIdType(CXXScopeSpec &SS, 3941 TemplateTy Template, SourceLocation TemplateLoc, 3942 SourceLocation LAngleLoc, 3943 ASTTemplateArgsPtr TemplateArgs, 3944 SourceLocation RAngleLoc); 3945 3946 /// \brief Parsed an elaborated-type-specifier that refers to a template-id, 3947 /// such as \c class T::template apply<U>. 3948 /// 3949 /// \param TUK 3950 TypeResult ActOnTagTemplateIdType(TagUseKind TUK, 3951 TypeSpecifierType TagSpec, 3952 SourceLocation TagLoc, 3953 CXXScopeSpec &SS, 3954 TemplateTy TemplateD, 3955 SourceLocation TemplateLoc, 3956 SourceLocation LAngleLoc, 3957 ASTTemplateArgsPtr TemplateArgsIn, 3958 SourceLocation RAngleLoc); 3959 3960 3961 ExprResult BuildTemplateIdExpr(const CXXScopeSpec &SS, 3962 LookupResult &R, 3963 bool RequiresADL, 3964 const TemplateArgumentListInfo &TemplateArgs); 3965 ExprResult BuildQualifiedTemplateIdExpr(CXXScopeSpec &SS, 3966 const DeclarationNameInfo &NameInfo, 3967 const TemplateArgumentListInfo &TemplateArgs); 3968 3969 TemplateNameKind ActOnDependentTemplateName(Scope *S, 3970 SourceLocation TemplateKWLoc, 3971 CXXScopeSpec &SS, 3972 UnqualifiedId &Name, 3973 ParsedType ObjectType, 3974 bool EnteringContext, 3975 TemplateTy &Template); 3976 3977 DeclResult 3978 ActOnClassTemplateSpecialization(Scope *S, unsigned TagSpec, TagUseKind TUK, 3979 SourceLocation KWLoc, 3980 SourceLocation ModulePrivateLoc, 3981 CXXScopeSpec &SS, 3982 TemplateTy Template, 3983 SourceLocation TemplateNameLoc, 3984 SourceLocation LAngleLoc, 3985 ASTTemplateArgsPtr TemplateArgs, 3986 SourceLocation RAngleLoc, 3987 AttributeList *Attr, 3988 MultiTemplateParamsArg TemplateParameterLists); 3989 3990 Decl *ActOnTemplateDeclarator(Scope *S, 3991 MultiTemplateParamsArg TemplateParameterLists, 3992 Declarator &D); 3993 3994 Decl *ActOnStartOfFunctionTemplateDef(Scope *FnBodyScope, 3995 MultiTemplateParamsArg TemplateParameterLists, 3996 Declarator &D); 3997 3998 bool 3999 CheckSpecializationInstantiationRedecl(SourceLocation NewLoc, 4000 TemplateSpecializationKind NewTSK, 4001 NamedDecl *PrevDecl, 4002 TemplateSpecializationKind PrevTSK, 4003 SourceLocation PrevPtOfInstantiation, 4004 bool &SuppressNew); 4005 4006 bool CheckDependentFunctionTemplateSpecialization(FunctionDecl *FD, 4007 const TemplateArgumentListInfo &ExplicitTemplateArgs, 4008 LookupResult &Previous); 4009 4010 bool CheckFunctionTemplateSpecialization(FunctionDecl *FD, 4011 TemplateArgumentListInfo *ExplicitTemplateArgs, 4012 LookupResult &Previous); 4013 bool CheckMemberSpecialization(NamedDecl *Member, LookupResult &Previous); 4014 4015 DeclResult 4016 ActOnExplicitInstantiation(Scope *S, 4017 SourceLocation ExternLoc, 4018 SourceLocation TemplateLoc, 4019 unsigned TagSpec, 4020 SourceLocation KWLoc, 4021 const CXXScopeSpec &SS, 4022 TemplateTy Template, 4023 SourceLocation TemplateNameLoc, 4024 SourceLocation LAngleLoc, 4025 ASTTemplateArgsPtr TemplateArgs, 4026 SourceLocation RAngleLoc, 4027 AttributeList *Attr); 4028 4029 DeclResult 4030 ActOnExplicitInstantiation(Scope *S, 4031 SourceLocation ExternLoc, 4032 SourceLocation TemplateLoc, 4033 unsigned TagSpec, 4034 SourceLocation KWLoc, 4035 CXXScopeSpec &SS, 4036 IdentifierInfo *Name, 4037 SourceLocation NameLoc, 4038 AttributeList *Attr); 4039 4040 DeclResult ActOnExplicitInstantiation(Scope *S, 4041 SourceLocation ExternLoc, 4042 SourceLocation TemplateLoc, 4043 Declarator &D); 4044 4045 TemplateArgumentLoc 4046 SubstDefaultTemplateArgumentIfAvailable(TemplateDecl *Template, 4047 SourceLocation TemplateLoc, 4048 SourceLocation RAngleLoc, 4049 Decl *Param, 4050 SmallVectorImpl<TemplateArgument> &Converted); 4051 4052 /// \brief Specifies the context in which a particular template 4053 /// argument is being checked. 4054 enum CheckTemplateArgumentKind { 4055 /// \brief The template argument was specified in the code or was 4056 /// instantiated with some deduced template arguments. 4057 CTAK_Specified, 4058 4059 /// \brief The template argument was deduced via template argument 4060 /// deduction. 4061 CTAK_Deduced, 4062 4063 /// \brief The template argument was deduced from an array bound 4064 /// via template argument deduction. 4065 CTAK_DeducedFromArrayBound 4066 }; 4067 4068 bool CheckTemplateArgument(NamedDecl *Param, 4069 const TemplateArgumentLoc &Arg, 4070 NamedDecl *Template, 4071 SourceLocation TemplateLoc, 4072 SourceLocation RAngleLoc, 4073 unsigned ArgumentPackIndex, 4074 SmallVectorImpl<TemplateArgument> &Converted, 4075 CheckTemplateArgumentKind CTAK = CTAK_Specified); 4076 4077 /// \brief Check that the given template arguments can be be provided to 4078 /// the given template, converting the arguments along the way. 4079 /// 4080 /// \param Template The template to which the template arguments are being 4081 /// provided. 4082 /// 4083 /// \param TemplateLoc The location of the template name in the source. 4084 /// 4085 /// \param TemplateArgs The list of template arguments. If the template is 4086 /// a template template parameter, this function may extend the set of 4087 /// template arguments to also include substituted, defaulted template 4088 /// arguments. 4089 /// 4090 /// \param PartialTemplateArgs True if the list of template arguments is 4091 /// intentionally partial, e.g., because we're checking just the initial 4092 /// set of template arguments. 4093 /// 4094 /// \param Converted Will receive the converted, canonicalized template 4095 /// arguments. 4096 /// 4097 /// \returns True if an error occurred, false otherwise. 4098 bool CheckTemplateArgumentList(TemplateDecl *Template, 4099 SourceLocation TemplateLoc, 4100 TemplateArgumentListInfo &TemplateArgs, 4101 bool PartialTemplateArgs, 4102 SmallVectorImpl<TemplateArgument> &Converted); 4103 4104 bool CheckTemplateTypeArgument(TemplateTypeParmDecl *Param, 4105 const TemplateArgumentLoc &Arg, 4106 SmallVectorImpl<TemplateArgument> &Converted); 4107 4108 bool CheckTemplateArgument(TemplateTypeParmDecl *Param, 4109 TypeSourceInfo *Arg); 4110 bool CheckTemplateArgumentPointerToMember(Expr *Arg, 4111 TemplateArgument &Converted); 4112 ExprResult CheckTemplateArgument(NonTypeTemplateParmDecl *Param, 4113 QualType InstantiatedParamType, Expr *Arg, 4114 TemplateArgument &Converted, 4115 CheckTemplateArgumentKind CTAK = CTAK_Specified); 4116 bool CheckTemplateArgument(TemplateTemplateParmDecl *Param, 4117 const TemplateArgumentLoc &Arg); 4118 4119 ExprResult 4120 BuildExpressionFromDeclTemplateArgument(const TemplateArgument &Arg, 4121 QualType ParamType, 4122 SourceLocation Loc); 4123 ExprResult 4124 BuildExpressionFromIntegralTemplateArgument(const TemplateArgument &Arg, 4125 SourceLocation Loc); 4126 4127 /// \brief Enumeration describing how template parameter lists are compared 4128 /// for equality. 4129 enum TemplateParameterListEqualKind { 4130 /// \brief We are matching the template parameter lists of two templates 4131 /// that might be redeclarations. 4132 /// 4133 /// \code 4134 /// template<typename T> struct X; 4135 /// template<typename T> struct X; 4136 /// \endcode 4137 TPL_TemplateMatch, 4138 4139 /// \brief We are matching the template parameter lists of two template 4140 /// template parameters as part of matching the template parameter lists 4141 /// of two templates that might be redeclarations. 4142 /// 4143 /// \code 4144 /// template<template<int I> class TT> struct X; 4145 /// template<template<int Value> class Other> struct X; 4146 /// \endcode 4147 TPL_TemplateTemplateParmMatch, 4148 4149 /// \brief We are matching the template parameter lists of a template 4150 /// template argument against the template parameter lists of a template 4151 /// template parameter. 4152 /// 4153 /// \code 4154 /// template<template<int Value> class Metafun> struct X; 4155 /// template<int Value> struct integer_c; 4156 /// X<integer_c> xic; 4157 /// \endcode 4158 TPL_TemplateTemplateArgumentMatch 4159 }; 4160 4161 bool TemplateParameterListsAreEqual(TemplateParameterList *New, 4162 TemplateParameterList *Old, 4163 bool Complain, 4164 TemplateParameterListEqualKind Kind, 4165 SourceLocation TemplateArgLoc 4166 = SourceLocation()); 4167 4168 bool CheckTemplateDeclScope(Scope *S, TemplateParameterList *TemplateParams); 4169 4170 /// \brief Called when the parser has parsed a C++ typename 4171 /// specifier, e.g., "typename T::type". 4172 /// 4173 /// \param S The scope in which this typename type occurs. 4174 /// \param TypenameLoc the location of the 'typename' keyword 4175 /// \param SS the nested-name-specifier following the typename (e.g., 'T::'). 4176 /// \param II the identifier we're retrieving (e.g., 'type' in the example). 4177 /// \param IdLoc the location of the identifier. 4178 TypeResult 4179 ActOnTypenameType(Scope *S, SourceLocation TypenameLoc, 4180 const CXXScopeSpec &SS, const IdentifierInfo &II, 4181 SourceLocation IdLoc); 4182 4183 /// \brief Called when the parser has parsed a C++ typename 4184 /// specifier that ends in a template-id, e.g., 4185 /// "typename MetaFun::template apply<T1, T2>". 4186 /// 4187 /// \param S The scope in which this typename type occurs. 4188 /// \param TypenameLoc the location of the 'typename' keyword 4189 /// \param SS the nested-name-specifier following the typename (e.g., 'T::'). 4190 /// \param TemplateLoc the location of the 'template' keyword, if any. 4191 /// \param TemplateName The template name. 4192 /// \param TemplateNameLoc The location of the template name. 4193 /// \param LAngleLoc The location of the opening angle bracket ('<'). 4194 /// \param TemplateArgs The template arguments. 4195 /// \param RAngleLoc The location of the closing angle bracket ('>'). 4196 TypeResult 4197 ActOnTypenameType(Scope *S, SourceLocation TypenameLoc, 4198 const CXXScopeSpec &SS, 4199 SourceLocation TemplateLoc, 4200 TemplateTy Template, 4201 SourceLocation TemplateNameLoc, 4202 SourceLocation LAngleLoc, 4203 ASTTemplateArgsPtr TemplateArgs, 4204 SourceLocation RAngleLoc); 4205 4206 QualType CheckTypenameType(ElaboratedTypeKeyword Keyword, 4207 SourceLocation KeywordLoc, 4208 NestedNameSpecifierLoc QualifierLoc, 4209 const IdentifierInfo &II, 4210 SourceLocation IILoc); 4211 4212 TypeSourceInfo *RebuildTypeInCurrentInstantiation(TypeSourceInfo *T, 4213 SourceLocation Loc, 4214 DeclarationName Name); 4215 bool RebuildNestedNameSpecifierInCurrentInstantiation(CXXScopeSpec &SS); 4216 4217 ExprResult RebuildExprInCurrentInstantiation(Expr *E); 4218 bool RebuildTemplateParamsInCurrentInstantiation( 4219 TemplateParameterList *Params); 4220 4221 std::string 4222 getTemplateArgumentBindingsText(const TemplateParameterList *Params, 4223 const TemplateArgumentList &Args); 4224 4225 std::string 4226 getTemplateArgumentBindingsText(const TemplateParameterList *Params, 4227 const TemplateArgument *Args, 4228 unsigned NumArgs); 4229 4230 //===--------------------------------------------------------------------===// 4231 // C++ Variadic Templates (C++0x [temp.variadic]) 4232 //===--------------------------------------------------------------------===// 4233 4234 /// \brief The context in which an unexpanded parameter pack is 4235 /// being diagnosed. 4236 /// 4237 /// Note that the values of this enumeration line up with the first 4238 /// argument to the \c err_unexpanded_parameter_pack diagnostic. 4239 enum UnexpandedParameterPackContext { 4240 /// \brief An arbitrary expression. 4241 UPPC_Expression = 0, 4242 4243 /// \brief The base type of a class type. 4244 UPPC_BaseType, 4245 4246 /// \brief The type of an arbitrary declaration. 4247 UPPC_DeclarationType, 4248 4249 /// \brief The type of a data member. 4250 UPPC_DataMemberType, 4251 4252 /// \brief The size of a bit-field. 4253 UPPC_BitFieldWidth, 4254 4255 /// \brief The expression in a static assertion. 4256 UPPC_StaticAssertExpression, 4257 4258 /// \brief The fixed underlying type of an enumeration. 4259 UPPC_FixedUnderlyingType, 4260 4261 /// \brief The enumerator value. 4262 UPPC_EnumeratorValue, 4263 4264 /// \brief A using declaration. 4265 UPPC_UsingDeclaration, 4266 4267 /// \brief A friend declaration. 4268 UPPC_FriendDeclaration, 4269 4270 /// \brief A declaration qualifier. 4271 UPPC_DeclarationQualifier, 4272 4273 /// \brief An initializer. 4274 UPPC_Initializer, 4275 4276 /// \brief A default argument. 4277 UPPC_DefaultArgument, 4278 4279 /// \brief The type of a non-type template parameter. 4280 UPPC_NonTypeTemplateParameterType, 4281 4282 /// \brief The type of an exception. 4283 UPPC_ExceptionType, 4284 4285 /// \brief Partial specialization. 4286 UPPC_PartialSpecialization, 4287 4288 /// \brief Microsoft __if_exists. 4289 UPPC_IfExists, 4290 4291 /// \brief Microsoft __if_not_exists. 4292 UPPC_IfNotExists 4293}; 4294 4295 /// \brief Diagnose unexpanded parameter packs. 4296 /// 4297 /// \param Loc The location at which we should emit the diagnostic. 4298 /// 4299 /// \param UPPC The context in which we are diagnosing unexpanded 4300 /// parameter packs. 4301 /// 4302 /// \param Unexpanded the set of unexpanded parameter packs. 4303 void DiagnoseUnexpandedParameterPacks(SourceLocation Loc, 4304 UnexpandedParameterPackContext UPPC, 4305 const SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); 4306 4307 /// \brief If the given type contains an unexpanded parameter pack, 4308 /// diagnose the error. 4309 /// 4310 /// \param Loc The source location where a diagnostc should be emitted. 4311 /// 4312 /// \param T The type that is being checked for unexpanded parameter 4313 /// packs. 4314 /// 4315 /// \returns true if an error occurred, false otherwise. 4316 bool DiagnoseUnexpandedParameterPack(SourceLocation Loc, TypeSourceInfo *T, 4317 UnexpandedParameterPackContext UPPC); 4318 4319 /// \brief If the given expression contains an unexpanded parameter 4320 /// pack, diagnose the error. 4321 /// 4322 /// \param E The expression that is being checked for unexpanded 4323 /// parameter packs. 4324 /// 4325 /// \returns true if an error occurred, false otherwise. 4326 bool DiagnoseUnexpandedParameterPack(Expr *E, 4327 UnexpandedParameterPackContext UPPC = UPPC_Expression); 4328 4329 /// \brief If the given nested-name-specifier contains an unexpanded 4330 /// parameter pack, diagnose the error. 4331 /// 4332 /// \param SS The nested-name-specifier that is being checked for 4333 /// unexpanded parameter packs. 4334 /// 4335 /// \returns true if an error occurred, false otherwise. 4336 bool DiagnoseUnexpandedParameterPack(const CXXScopeSpec &SS, 4337 UnexpandedParameterPackContext UPPC); 4338 4339 /// \brief If the given name contains an unexpanded parameter pack, 4340 /// diagnose the error. 4341 /// 4342 /// \param NameInfo The name (with source location information) that 4343 /// is being checked for unexpanded parameter packs. 4344 /// 4345 /// \returns true if an error occurred, false otherwise. 4346 bool DiagnoseUnexpandedParameterPack(const DeclarationNameInfo &NameInfo, 4347 UnexpandedParameterPackContext UPPC); 4348 4349 /// \brief If the given template name contains an unexpanded parameter pack, 4350 /// diagnose the error. 4351 /// 4352 /// \param Loc The location of the template name. 4353 /// 4354 /// \param Template The template name that is being checked for unexpanded 4355 /// parameter packs. 4356 /// 4357 /// \returns true if an error occurred, false otherwise. 4358 bool DiagnoseUnexpandedParameterPack(SourceLocation Loc, 4359 TemplateName Template, 4360 UnexpandedParameterPackContext UPPC); 4361 4362 /// \brief If the given template argument contains an unexpanded parameter 4363 /// pack, diagnose the error. 4364 /// 4365 /// \param Arg The template argument that is being checked for unexpanded 4366 /// parameter packs. 4367 /// 4368 /// \returns true if an error occurred, false otherwise. 4369 bool DiagnoseUnexpandedParameterPack(TemplateArgumentLoc Arg, 4370 UnexpandedParameterPackContext UPPC); 4371 4372 /// \brief Collect the set of unexpanded parameter packs within the given 4373 /// template argument. 4374 /// 4375 /// \param Arg The template argument that will be traversed to find 4376 /// unexpanded parameter packs. 4377 void collectUnexpandedParameterPacks(TemplateArgument Arg, 4378 SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); 4379 4380 /// \brief Collect the set of unexpanded parameter packs within the given 4381 /// template argument. 4382 /// 4383 /// \param Arg The template argument that will be traversed to find 4384 /// unexpanded parameter packs. 4385 void collectUnexpandedParameterPacks(TemplateArgumentLoc Arg, 4386 SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); 4387 4388 /// \brief Collect the set of unexpanded parameter packs within the given 4389 /// type. 4390 /// 4391 /// \param T The type that will be traversed to find 4392 /// unexpanded parameter packs. 4393 void collectUnexpandedParameterPacks(QualType T, 4394 SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); 4395 4396 /// \brief Collect the set of unexpanded parameter packs within the given 4397 /// type. 4398 /// 4399 /// \param TL The type that will be traversed to find 4400 /// unexpanded parameter packs. 4401 void collectUnexpandedParameterPacks(TypeLoc TL, 4402 SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); 4403 4404 /// \brief Collect the set of unexpanded parameter packs within the given 4405 /// nested-name-specifier. 4406 /// 4407 /// \param SS The nested-name-specifier that will be traversed to find 4408 /// unexpanded parameter packs. 4409 void collectUnexpandedParameterPacks(CXXScopeSpec &SS, 4410 SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); 4411 4412 /// \brief Collect the set of unexpanded parameter packs within the given 4413 /// name. 4414 /// 4415 /// \param NameInfo The name that will be traversed to find 4416 /// unexpanded parameter packs. 4417 void collectUnexpandedParameterPacks(const DeclarationNameInfo &NameInfo, 4418 SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); 4419 4420 /// \brief Invoked when parsing a template argument followed by an 4421 /// ellipsis, which creates a pack expansion. 4422 /// 4423 /// \param Arg The template argument preceding the ellipsis, which 4424 /// may already be invalid. 4425 /// 4426 /// \param EllipsisLoc The location of the ellipsis. 4427 ParsedTemplateArgument ActOnPackExpansion(const ParsedTemplateArgument &Arg, 4428 SourceLocation EllipsisLoc); 4429 4430 /// \brief Invoked when parsing a type followed by an ellipsis, which 4431 /// creates a pack expansion. 4432 /// 4433 /// \param Type The type preceding the ellipsis, which will become 4434 /// the pattern of the pack expansion. 4435 /// 4436 /// \param EllipsisLoc The location of the ellipsis. 4437 TypeResult ActOnPackExpansion(ParsedType Type, SourceLocation EllipsisLoc); 4438 4439 /// \brief Construct a pack expansion type from the pattern of the pack 4440 /// expansion. 4441 TypeSourceInfo *CheckPackExpansion(TypeSourceInfo *Pattern, 4442 SourceLocation EllipsisLoc, 4443 llvm::Optional<unsigned> NumExpansions); 4444 4445 /// \brief Construct a pack expansion type from the pattern of the pack 4446 /// expansion. 4447 QualType CheckPackExpansion(QualType Pattern, 4448 SourceRange PatternRange, 4449 SourceLocation EllipsisLoc, 4450 llvm::Optional<unsigned> NumExpansions); 4451 4452 /// \brief Invoked when parsing an expression followed by an ellipsis, which 4453 /// creates a pack expansion. 4454 /// 4455 /// \param Pattern The expression preceding the ellipsis, which will become 4456 /// the pattern of the pack expansion. 4457 /// 4458 /// \param EllipsisLoc The location of the ellipsis. 4459 ExprResult ActOnPackExpansion(Expr *Pattern, SourceLocation EllipsisLoc); 4460 4461 /// \brief Invoked when parsing an expression followed by an ellipsis, which 4462 /// creates a pack expansion. 4463 /// 4464 /// \param Pattern The expression preceding the ellipsis, which will become 4465 /// the pattern of the pack expansion. 4466 /// 4467 /// \param EllipsisLoc The location of the ellipsis. 4468 ExprResult CheckPackExpansion(Expr *Pattern, SourceLocation EllipsisLoc, 4469 llvm::Optional<unsigned> NumExpansions); 4470 4471 /// \brief Determine whether we could expand a pack expansion with the 4472 /// given set of parameter packs into separate arguments by repeatedly 4473 /// transforming the pattern. 4474 /// 4475 /// \param EllipsisLoc The location of the ellipsis that identifies the 4476 /// pack expansion. 4477 /// 4478 /// \param PatternRange The source range that covers the entire pattern of 4479 /// the pack expansion. 4480 /// 4481 /// \param Unexpanded The set of unexpanded parameter packs within the 4482 /// pattern. 4483 /// 4484 /// \param NumUnexpanded The number of unexpanded parameter packs in 4485 /// \p Unexpanded. 4486 /// 4487 /// \param ShouldExpand Will be set to \c true if the transformer should 4488 /// expand the corresponding pack expansions into separate arguments. When 4489 /// set, \c NumExpansions must also be set. 4490 /// 4491 /// \param RetainExpansion Whether the caller should add an unexpanded 4492 /// pack expansion after all of the expanded arguments. This is used 4493 /// when extending explicitly-specified template argument packs per 4494 /// C++0x [temp.arg.explicit]p9. 4495 /// 4496 /// \param NumExpansions The number of separate arguments that will be in 4497 /// the expanded form of the corresponding pack expansion. This is both an 4498 /// input and an output parameter, which can be set by the caller if the 4499 /// number of expansions is known a priori (e.g., due to a prior substitution) 4500 /// and will be set by the callee when the number of expansions is known. 4501 /// The callee must set this value when \c ShouldExpand is \c true; it may 4502 /// set this value in other cases. 4503 /// 4504 /// \returns true if an error occurred (e.g., because the parameter packs 4505 /// are to be instantiated with arguments of different lengths), false 4506 /// otherwise. If false, \c ShouldExpand (and possibly \c NumExpansions) 4507 /// must be set. 4508 bool CheckParameterPacksForExpansion(SourceLocation EllipsisLoc, 4509 SourceRange PatternRange, 4510 llvm::ArrayRef<UnexpandedParameterPack> Unexpanded, 4511 const MultiLevelTemplateArgumentList &TemplateArgs, 4512 bool &ShouldExpand, 4513 bool &RetainExpansion, 4514 llvm::Optional<unsigned> &NumExpansions); 4515 4516 /// \brief Determine the number of arguments in the given pack expansion 4517 /// type. 4518 /// 4519 /// This routine already assumes that the pack expansion type can be 4520 /// expanded and that the number of arguments in the expansion is 4521 /// consistent across all of the unexpanded parameter packs in its pattern. 4522 unsigned getNumArgumentsInExpansion(QualType T, 4523 const MultiLevelTemplateArgumentList &TemplateArgs); 4524 4525 /// \brief Determine whether the given declarator contains any unexpanded 4526 /// parameter packs. 4527 /// 4528 /// This routine is used by the parser to disambiguate function declarators 4529 /// with an ellipsis prior to the ')', e.g., 4530 /// 4531 /// \code 4532 /// void f(T...); 4533 /// \endcode 4534 /// 4535 /// To determine whether we have an (unnamed) function parameter pack or 4536 /// a variadic function. 4537 /// 4538 /// \returns true if the declarator contains any unexpanded parameter packs, 4539 /// false otherwise. 4540 bool containsUnexpandedParameterPacks(Declarator &D); 4541 4542 //===--------------------------------------------------------------------===// 4543 // C++ Template Argument Deduction (C++ [temp.deduct]) 4544 //===--------------------------------------------------------------------===// 4545 4546 /// \brief Describes the result of template argument deduction. 4547 /// 4548 /// The TemplateDeductionResult enumeration describes the result of 4549 /// template argument deduction, as returned from 4550 /// DeduceTemplateArguments(). The separate TemplateDeductionInfo 4551 /// structure provides additional information about the results of 4552 /// template argument deduction, e.g., the deduced template argument 4553 /// list (if successful) or the specific template parameters or 4554 /// deduced arguments that were involved in the failure. 4555 enum TemplateDeductionResult { 4556 /// \brief Template argument deduction was successful. 4557 TDK_Success = 0, 4558 /// \brief Template argument deduction exceeded the maximum template 4559 /// instantiation depth (which has already been diagnosed). 4560 TDK_InstantiationDepth, 4561 /// \brief Template argument deduction did not deduce a value 4562 /// for every template parameter. 4563 TDK_Incomplete, 4564 /// \brief Template argument deduction produced inconsistent 4565 /// deduced values for the given template parameter. 4566 TDK_Inconsistent, 4567 /// \brief Template argument deduction failed due to inconsistent 4568 /// cv-qualifiers on a template parameter type that would 4569 /// otherwise be deduced, e.g., we tried to deduce T in "const T" 4570 /// but were given a non-const "X". 4571 TDK_Underqualified, 4572 /// \brief Substitution of the deduced template argument values 4573 /// resulted in an error. 4574 TDK_SubstitutionFailure, 4575 /// \brief Substitution of the deduced template argument values 4576 /// into a non-deduced context produced a type or value that 4577 /// produces a type that does not match the original template 4578 /// arguments provided. 4579 TDK_NonDeducedMismatch, 4580 /// \brief When performing template argument deduction for a function 4581 /// template, there were too many call arguments. 4582 TDK_TooManyArguments, 4583 /// \brief When performing template argument deduction for a function 4584 /// template, there were too few call arguments. 4585 TDK_TooFewArguments, 4586 /// \brief The explicitly-specified template arguments were not valid 4587 /// template arguments for the given template. 4588 TDK_InvalidExplicitArguments, 4589 /// \brief The arguments included an overloaded function name that could 4590 /// not be resolved to a suitable function. 4591 TDK_FailedOverloadResolution 4592 }; 4593 4594 TemplateDeductionResult 4595 DeduceTemplateArguments(ClassTemplatePartialSpecializationDecl *Partial, 4596 const TemplateArgumentList &TemplateArgs, 4597 sema::TemplateDeductionInfo &Info); 4598 4599 TemplateDeductionResult 4600 SubstituteExplicitTemplateArguments(FunctionTemplateDecl *FunctionTemplate, 4601 TemplateArgumentListInfo &ExplicitTemplateArgs, 4602 SmallVectorImpl<DeducedTemplateArgument> &Deduced, 4603 SmallVectorImpl<QualType> &ParamTypes, 4604 QualType *FunctionType, 4605 sema::TemplateDeductionInfo &Info); 4606 4607 /// brief A function argument from which we performed template argument 4608 // deduction for a call. 4609 struct OriginalCallArg { 4610 OriginalCallArg(QualType OriginalParamType, 4611 unsigned ArgIdx, 4612 QualType OriginalArgType) 4613 : OriginalParamType(OriginalParamType), ArgIdx(ArgIdx), 4614 OriginalArgType(OriginalArgType) { } 4615 4616 QualType OriginalParamType; 4617 unsigned ArgIdx; 4618 QualType OriginalArgType; 4619 }; 4620 4621 TemplateDeductionResult 4622 FinishTemplateArgumentDeduction(FunctionTemplateDecl *FunctionTemplate, 4623 SmallVectorImpl<DeducedTemplateArgument> &Deduced, 4624 unsigned NumExplicitlySpecified, 4625 FunctionDecl *&Specialization, 4626 sema::TemplateDeductionInfo &Info, 4627 SmallVectorImpl<OriginalCallArg> const *OriginalCallArgs = 0); 4628 4629 TemplateDeductionResult 4630 DeduceTemplateArguments(FunctionTemplateDecl *FunctionTemplate, 4631 TemplateArgumentListInfo *ExplicitTemplateArgs, 4632 Expr **Args, unsigned NumArgs, 4633 FunctionDecl *&Specialization, 4634 sema::TemplateDeductionInfo &Info); 4635 4636 TemplateDeductionResult 4637 DeduceTemplateArguments(FunctionTemplateDecl *FunctionTemplate, 4638 TemplateArgumentListInfo *ExplicitTemplateArgs, 4639 QualType ArgFunctionType, 4640 FunctionDecl *&Specialization, 4641 sema::TemplateDeductionInfo &Info); 4642 4643 TemplateDeductionResult 4644 DeduceTemplateArguments(FunctionTemplateDecl *FunctionTemplate, 4645 QualType ToType, 4646 CXXConversionDecl *&Specialization, 4647 sema::TemplateDeductionInfo &Info); 4648 4649 TemplateDeductionResult 4650 DeduceTemplateArguments(FunctionTemplateDecl *FunctionTemplate, 4651 TemplateArgumentListInfo *ExplicitTemplateArgs, 4652 FunctionDecl *&Specialization, 4653 sema::TemplateDeductionInfo &Info); 4654 4655 /// \brief Result type of DeduceAutoType. 4656 enum DeduceAutoResult { 4657 DAR_Succeeded, 4658 DAR_Failed, 4659 DAR_FailedAlreadyDiagnosed 4660 }; 4661 4662 DeduceAutoResult DeduceAutoType(TypeSourceInfo *AutoType, Expr *&Initializer, 4663 TypeSourceInfo *&Result); 4664 void DiagnoseAutoDeductionFailure(VarDecl *VDecl, Expr *Init); 4665 4666 FunctionTemplateDecl *getMoreSpecializedTemplate(FunctionTemplateDecl *FT1, 4667 FunctionTemplateDecl *FT2, 4668 SourceLocation Loc, 4669 TemplatePartialOrderingContext TPOC, 4670 unsigned NumCallArguments); 4671 UnresolvedSetIterator getMostSpecialized(UnresolvedSetIterator SBegin, 4672 UnresolvedSetIterator SEnd, 4673 TemplatePartialOrderingContext TPOC, 4674 unsigned NumCallArguments, 4675 SourceLocation Loc, 4676 const PartialDiagnostic &NoneDiag, 4677 const PartialDiagnostic &AmbigDiag, 4678 const PartialDiagnostic &CandidateDiag, 4679 bool Complain = true, 4680 QualType TargetType = QualType()); 4681 4682 ClassTemplatePartialSpecializationDecl * 4683 getMoreSpecializedPartialSpecialization( 4684 ClassTemplatePartialSpecializationDecl *PS1, 4685 ClassTemplatePartialSpecializationDecl *PS2, 4686 SourceLocation Loc); 4687 4688 void MarkUsedTemplateParameters(const TemplateArgumentList &TemplateArgs, 4689 bool OnlyDeduced, 4690 unsigned Depth, 4691 SmallVectorImpl<bool> &Used); 4692 void MarkDeducedTemplateParameters(FunctionTemplateDecl *FunctionTemplate, 4693 SmallVectorImpl<bool> &Deduced) { 4694 return MarkDeducedTemplateParameters(Context, FunctionTemplate, Deduced); 4695 } 4696 static void MarkDeducedTemplateParameters(ASTContext &Ctx, 4697 FunctionTemplateDecl *FunctionTemplate, 4698 SmallVectorImpl<bool> &Deduced); 4699 4700 //===--------------------------------------------------------------------===// 4701 // C++ Template Instantiation 4702 // 4703 4704 MultiLevelTemplateArgumentList getTemplateInstantiationArgs(NamedDecl *D, 4705 const TemplateArgumentList *Innermost = 0, 4706 bool RelativeToPrimary = false, 4707 const FunctionDecl *Pattern = 0); 4708 4709 /// \brief A template instantiation that is currently in progress. 4710 struct ActiveTemplateInstantiation { 4711 /// \brief The kind of template instantiation we are performing 4712 enum InstantiationKind { 4713 /// We are instantiating a template declaration. The entity is 4714 /// the declaration we're instantiating (e.g., a CXXRecordDecl). 4715 TemplateInstantiation, 4716 4717 /// We are instantiating a default argument for a template 4718 /// parameter. The Entity is the template, and 4719 /// TemplateArgs/NumTemplateArguments provides the template 4720 /// arguments as specified. 4721 /// FIXME: Use a TemplateArgumentList 4722 DefaultTemplateArgumentInstantiation, 4723 4724 /// We are instantiating a default argument for a function. 4725 /// The Entity is the ParmVarDecl, and TemplateArgs/NumTemplateArgs 4726 /// provides the template arguments as specified. 4727 DefaultFunctionArgumentInstantiation, 4728 4729 /// We are substituting explicit template arguments provided for 4730 /// a function template. The entity is a FunctionTemplateDecl. 4731 ExplicitTemplateArgumentSubstitution, 4732 4733 /// We are substituting template argument determined as part of 4734 /// template argument deduction for either a class template 4735 /// partial specialization or a function template. The 4736 /// Entity is either a ClassTemplatePartialSpecializationDecl or 4737 /// a FunctionTemplateDecl. 4738 DeducedTemplateArgumentSubstitution, 4739 4740 /// We are substituting prior template arguments into a new 4741 /// template parameter. The template parameter itself is either a 4742 /// NonTypeTemplateParmDecl or a TemplateTemplateParmDecl. 4743 PriorTemplateArgumentSubstitution, 4744 4745 /// We are checking the validity of a default template argument that 4746 /// has been used when naming a template-id. 4747 DefaultTemplateArgumentChecking 4748 } Kind; 4749 4750 /// \brief The point of instantiation within the source code. 4751 SourceLocation PointOfInstantiation; 4752 4753 /// \brief The template (or partial specialization) in which we are 4754 /// performing the instantiation, for substitutions of prior template 4755 /// arguments. 4756 NamedDecl *Template; 4757 4758 /// \brief The entity that is being instantiated. 4759 uintptr_t Entity; 4760 4761 /// \brief The list of template arguments we are substituting, if they 4762 /// are not part of the entity. 4763 const TemplateArgument *TemplateArgs; 4764 4765 /// \brief The number of template arguments in TemplateArgs. 4766 unsigned NumTemplateArgs; 4767 4768 /// \brief The template deduction info object associated with the 4769 /// substitution or checking of explicit or deduced template arguments. 4770 sema::TemplateDeductionInfo *DeductionInfo; 4771 4772 /// \brief The source range that covers the construct that cause 4773 /// the instantiation, e.g., the template-id that causes a class 4774 /// template instantiation. 4775 SourceRange InstantiationRange; 4776 4777 ActiveTemplateInstantiation() 4778 : Kind(TemplateInstantiation), Template(0), Entity(0), TemplateArgs(0), 4779 NumTemplateArgs(0), DeductionInfo(0) {} 4780 4781 /// \brief Determines whether this template is an actual instantiation 4782 /// that should be counted toward the maximum instantiation depth. 4783 bool isInstantiationRecord() const; 4784 4785 friend bool operator==(const ActiveTemplateInstantiation &X, 4786 const ActiveTemplateInstantiation &Y) { 4787 if (X.Kind != Y.Kind) 4788 return false; 4789 4790 if (X.Entity != Y.Entity) 4791 return false; 4792 4793 switch (X.Kind) { 4794 case TemplateInstantiation: 4795 return true; 4796 4797 case PriorTemplateArgumentSubstitution: 4798 case DefaultTemplateArgumentChecking: 4799 if (X.Template != Y.Template) 4800 return false; 4801 4802 // Fall through 4803 4804 case DefaultTemplateArgumentInstantiation: 4805 case ExplicitTemplateArgumentSubstitution: 4806 case DeducedTemplateArgumentSubstitution: 4807 case DefaultFunctionArgumentInstantiation: 4808 return X.TemplateArgs == Y.TemplateArgs; 4809 4810 } 4811 4812 llvm_unreachable("Invalid InstantiationKind!"); 4813 } 4814 4815 friend bool operator!=(const ActiveTemplateInstantiation &X, 4816 const ActiveTemplateInstantiation &Y) { 4817 return !(X == Y); 4818 } 4819 }; 4820 4821 /// \brief List of active template instantiations. 4822 /// 4823 /// This vector is treated as a stack. As one template instantiation 4824 /// requires another template instantiation, additional 4825 /// instantiations are pushed onto the stack up to a 4826 /// user-configurable limit LangOptions::InstantiationDepth. 4827 SmallVector<ActiveTemplateInstantiation, 16> 4828 ActiveTemplateInstantiations; 4829 4830 /// \brief Whether we are in a SFINAE context that is not associated with 4831 /// template instantiation. 4832 /// 4833 /// This is used when setting up a SFINAE trap (\c see SFINAETrap) outside 4834 /// of a template instantiation or template argument deduction. 4835 bool InNonInstantiationSFINAEContext; 4836 4837 /// \brief The number of ActiveTemplateInstantiation entries in 4838 /// \c ActiveTemplateInstantiations that are not actual instantiations and, 4839 /// therefore, should not be counted as part of the instantiation depth. 4840 unsigned NonInstantiationEntries; 4841 4842 /// \brief The last template from which a template instantiation 4843 /// error or warning was produced. 4844 /// 4845 /// This value is used to suppress printing of redundant template 4846 /// instantiation backtraces when there are multiple errors in the 4847 /// same instantiation. FIXME: Does this belong in Sema? It's tough 4848 /// to implement it anywhere else. 4849 ActiveTemplateInstantiation LastTemplateInstantiationErrorContext; 4850 4851 /// \brief The current index into pack expansion arguments that will be 4852 /// used for substitution of parameter packs. 4853 /// 4854 /// The pack expansion index will be -1 to indicate that parameter packs 4855 /// should be instantiated as themselves. Otherwise, the index specifies 4856 /// which argument within the parameter pack will be used for substitution. 4857 int ArgumentPackSubstitutionIndex; 4858 4859 /// \brief RAII object used to change the argument pack substitution index 4860 /// within a \c Sema object. 4861 /// 4862 /// See \c ArgumentPackSubstitutionIndex for more information. 4863 class ArgumentPackSubstitutionIndexRAII { 4864 Sema &Self; 4865 int OldSubstitutionIndex; 4866 4867 public: 4868 ArgumentPackSubstitutionIndexRAII(Sema &Self, int NewSubstitutionIndex) 4869 : Self(Self), OldSubstitutionIndex(Self.ArgumentPackSubstitutionIndex) { 4870 Self.ArgumentPackSubstitutionIndex = NewSubstitutionIndex; 4871 } 4872 4873 ~ArgumentPackSubstitutionIndexRAII() { 4874 Self.ArgumentPackSubstitutionIndex = OldSubstitutionIndex; 4875 } 4876 }; 4877 4878 friend class ArgumentPackSubstitutionRAII; 4879 4880 /// \brief The stack of calls expression undergoing template instantiation. 4881 /// 4882 /// The top of this stack is used by a fixit instantiating unresolved 4883 /// function calls to fix the AST to match the textual change it prints. 4884 SmallVector<CallExpr *, 8> CallsUndergoingInstantiation; 4885 4886 /// \brief For each declaration that involved template argument deduction, the 4887 /// set of diagnostics that were suppressed during that template argument 4888 /// deduction. 4889 /// 4890 /// FIXME: Serialize this structure to the AST file. 4891 llvm::DenseMap<Decl *, SmallVector<PartialDiagnosticAt, 1> > 4892 SuppressedDiagnostics; 4893 4894 /// \brief A stack object to be created when performing template 4895 /// instantiation. 4896 /// 4897 /// Construction of an object of type \c InstantiatingTemplate 4898 /// pushes the current instantiation onto the stack of active 4899 /// instantiations. If the size of this stack exceeds the maximum 4900 /// number of recursive template instantiations, construction 4901 /// produces an error and evaluates true. 4902 /// 4903 /// Destruction of this object will pop the named instantiation off 4904 /// the stack. 4905 struct InstantiatingTemplate { 4906 /// \brief Note that we are instantiating a class template, 4907 /// function template, or a member thereof. 4908 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4909 Decl *Entity, 4910 SourceRange InstantiationRange = SourceRange()); 4911 4912 /// \brief Note that we are instantiating a default argument in a 4913 /// template-id. 4914 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4915 TemplateDecl *Template, 4916 const TemplateArgument *TemplateArgs, 4917 unsigned NumTemplateArgs, 4918 SourceRange InstantiationRange = SourceRange()); 4919 4920 /// \brief Note that we are instantiating a default argument in a 4921 /// template-id. 4922 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4923 FunctionTemplateDecl *FunctionTemplate, 4924 const TemplateArgument *TemplateArgs, 4925 unsigned NumTemplateArgs, 4926 ActiveTemplateInstantiation::InstantiationKind Kind, 4927 sema::TemplateDeductionInfo &DeductionInfo, 4928 SourceRange InstantiationRange = SourceRange()); 4929 4930 /// \brief Note that we are instantiating as part of template 4931 /// argument deduction for a class template partial 4932 /// specialization. 4933 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4934 ClassTemplatePartialSpecializationDecl *PartialSpec, 4935 const TemplateArgument *TemplateArgs, 4936 unsigned NumTemplateArgs, 4937 sema::TemplateDeductionInfo &DeductionInfo, 4938 SourceRange InstantiationRange = SourceRange()); 4939 4940 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4941 ParmVarDecl *Param, 4942 const TemplateArgument *TemplateArgs, 4943 unsigned NumTemplateArgs, 4944 SourceRange InstantiationRange = SourceRange()); 4945 4946 /// \brief Note that we are substituting prior template arguments into a 4947 /// non-type or template template parameter. 4948 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4949 NamedDecl *Template, 4950 NonTypeTemplateParmDecl *Param, 4951 const TemplateArgument *TemplateArgs, 4952 unsigned NumTemplateArgs, 4953 SourceRange InstantiationRange); 4954 4955 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4956 NamedDecl *Template, 4957 TemplateTemplateParmDecl *Param, 4958 const TemplateArgument *TemplateArgs, 4959 unsigned NumTemplateArgs, 4960 SourceRange InstantiationRange); 4961 4962 /// \brief Note that we are checking the default template argument 4963 /// against the template parameter for a given template-id. 4964 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4965 TemplateDecl *Template, 4966 NamedDecl *Param, 4967 const TemplateArgument *TemplateArgs, 4968 unsigned NumTemplateArgs, 4969 SourceRange InstantiationRange); 4970 4971 4972 /// \brief Note that we have finished instantiating this template. 4973 void Clear(); 4974 4975 ~InstantiatingTemplate() { Clear(); } 4976 4977 /// \brief Determines whether we have exceeded the maximum 4978 /// recursive template instantiations. 4979 operator bool() const { return Invalid; } 4980 4981 private: 4982 Sema &SemaRef; 4983 bool Invalid; 4984 bool SavedInNonInstantiationSFINAEContext; 4985 bool CheckInstantiationDepth(SourceLocation PointOfInstantiation, 4986 SourceRange InstantiationRange); 4987 4988 InstantiatingTemplate(const InstantiatingTemplate&); // not implemented 4989 4990 InstantiatingTemplate& 4991 operator=(const InstantiatingTemplate&); // not implemented 4992 }; 4993 4994 void PrintInstantiationStack(); 4995 4996 /// \brief Determines whether we are currently in a context where 4997 /// template argument substitution failures are not considered 4998 /// errors. 4999 /// 5000 /// \returns An empty \c llvm::Optional if we're not in a SFINAE context. 5001 /// Otherwise, contains a pointer that, if non-NULL, contains the nearest 5002 /// template-deduction context object, which can be used to capture 5003 /// diagnostics that will be suppressed. 5004 llvm::Optional<sema::TemplateDeductionInfo *> isSFINAEContext() const; 5005 5006 /// \brief RAII class used to determine whether SFINAE has 5007 /// trapped any errors that occur during template argument 5008 /// deduction.` 5009 class SFINAETrap { 5010 Sema &SemaRef; 5011 unsigned PrevSFINAEErrors; 5012 bool PrevInNonInstantiationSFINAEContext; 5013 bool PrevAccessCheckingSFINAE; 5014 5015 public: 5016 explicit SFINAETrap(Sema &SemaRef, bool AccessCheckingSFINAE = false) 5017 : SemaRef(SemaRef), PrevSFINAEErrors(SemaRef.NumSFINAEErrors), 5018 PrevInNonInstantiationSFINAEContext( 5019 SemaRef.InNonInstantiationSFINAEContext), 5020 PrevAccessCheckingSFINAE(SemaRef.AccessCheckingSFINAE) 5021 { 5022 if (!SemaRef.isSFINAEContext()) 5023 SemaRef.InNonInstantiationSFINAEContext = true; 5024 SemaRef.AccessCheckingSFINAE = AccessCheckingSFINAE; 5025 } 5026 5027 ~SFINAETrap() { 5028 SemaRef.NumSFINAEErrors = PrevSFINAEErrors; 5029 SemaRef.InNonInstantiationSFINAEContext 5030 = PrevInNonInstantiationSFINAEContext; 5031 SemaRef.AccessCheckingSFINAE = PrevAccessCheckingSFINAE; 5032 } 5033 5034 /// \brief Determine whether any SFINAE errors have been trapped. 5035 bool hasErrorOccurred() const { 5036 return SemaRef.NumSFINAEErrors > PrevSFINAEErrors; 5037 } 5038 }; 5039 5040 /// \brief The current instantiation scope used to store local 5041 /// variables. 5042 LocalInstantiationScope *CurrentInstantiationScope; 5043 5044 /// \brief The number of typos corrected by CorrectTypo. 5045 unsigned TyposCorrected; 5046 5047 typedef llvm::DenseMap<IdentifierInfo *, TypoCorrection> 5048 UnqualifiedTyposCorrectedMap; 5049 5050 /// \brief A cache containing the results of typo correction for unqualified 5051 /// name lookup. 5052 /// 5053 /// The string is the string that we corrected to (which may be empty, if 5054 /// there was no correction), while the boolean will be true when the 5055 /// string represents a keyword. 5056 UnqualifiedTyposCorrectedMap UnqualifiedTyposCorrected; 5057 5058 /// \brief Worker object for performing CFG-based warnings. 5059 sema::AnalysisBasedWarnings AnalysisWarnings; 5060 5061 /// \brief An entity for which implicit template instantiation is required. 5062 /// 5063 /// The source location associated with the declaration is the first place in 5064 /// the source code where the declaration was "used". It is not necessarily 5065 /// the point of instantiation (which will be either before or after the 5066 /// namespace-scope declaration that triggered this implicit instantiation), 5067 /// However, it is the location that diagnostics should generally refer to, 5068 /// because users will need to know what code triggered the instantiation. 5069 typedef std::pair<ValueDecl *, SourceLocation> PendingImplicitInstantiation; 5070 5071 /// \brief The queue of implicit template instantiations that are required 5072 /// but have not yet been performed. 5073 std::deque<PendingImplicitInstantiation> PendingInstantiations; 5074 5075 /// \brief The queue of implicit template instantiations that are required 5076 /// and must be performed within the current local scope. 5077 /// 5078 /// This queue is only used for member functions of local classes in 5079 /// templates, which must be instantiated in the same scope as their 5080 /// enclosing function, so that they can reference function-local 5081 /// types, static variables, enumerators, etc. 5082 std::deque<PendingImplicitInstantiation> PendingLocalImplicitInstantiations; 5083 5084 void PerformPendingInstantiations(bool LocalOnly = false); 5085 5086 TypeSourceInfo *SubstType(TypeSourceInfo *T, 5087 const MultiLevelTemplateArgumentList &TemplateArgs, 5088 SourceLocation Loc, DeclarationName Entity); 5089 5090 QualType SubstType(QualType T, 5091 const MultiLevelTemplateArgumentList &TemplateArgs, 5092 SourceLocation Loc, DeclarationName Entity); 5093 5094 TypeSourceInfo *SubstType(TypeLoc TL, 5095 const MultiLevelTemplateArgumentList &TemplateArgs, 5096 SourceLocation Loc, DeclarationName Entity); 5097 5098 TypeSourceInfo *SubstFunctionDeclType(TypeSourceInfo *T, 5099 const MultiLevelTemplateArgumentList &TemplateArgs, 5100 SourceLocation Loc, 5101 DeclarationName Entity); 5102 ParmVarDecl *SubstParmVarDecl(ParmVarDecl *D, 5103 const MultiLevelTemplateArgumentList &TemplateArgs, 5104 int indexAdjustment, 5105 llvm::Optional<unsigned> NumExpansions, 5106 bool ExpectParameterPack); 5107 bool SubstParmTypes(SourceLocation Loc, 5108 ParmVarDecl **Params, unsigned NumParams, 5109 const MultiLevelTemplateArgumentList &TemplateArgs, 5110 SmallVectorImpl<QualType> &ParamTypes, 5111 SmallVectorImpl<ParmVarDecl *> *OutParams = 0); 5112 ExprResult SubstExpr(Expr *E, 5113 const MultiLevelTemplateArgumentList &TemplateArgs); 5114 5115 /// \brief Substitute the given template arguments into a list of 5116 /// expressions, expanding pack expansions if required. 5117 /// 5118 /// \param Exprs The list of expressions to substitute into. 5119 /// 5120 /// \param NumExprs The number of expressions in \p Exprs. 5121 /// 5122 /// \param IsCall Whether this is some form of call, in which case 5123 /// default arguments will be dropped. 5124 /// 5125 /// \param TemplateArgs The set of template arguments to substitute. 5126 /// 5127 /// \param Outputs Will receive all of the substituted arguments. 5128 /// 5129 /// \returns true if an error occurred, false otherwise. 5130 bool SubstExprs(Expr **Exprs, unsigned NumExprs, bool IsCall, 5131 const MultiLevelTemplateArgumentList &TemplateArgs, 5132 SmallVectorImpl<Expr *> &Outputs); 5133 5134 StmtResult SubstStmt(Stmt *S, 5135 const MultiLevelTemplateArgumentList &TemplateArgs); 5136 5137 Decl *SubstDecl(Decl *D, DeclContext *Owner, 5138 const MultiLevelTemplateArgumentList &TemplateArgs); 5139 5140 bool 5141 SubstBaseSpecifiers(CXXRecordDecl *Instantiation, 5142 CXXRecordDecl *Pattern, 5143 const MultiLevelTemplateArgumentList &TemplateArgs); 5144 5145 bool 5146 InstantiateClass(SourceLocation PointOfInstantiation, 5147 CXXRecordDecl *Instantiation, CXXRecordDecl *Pattern, 5148 const MultiLevelTemplateArgumentList &TemplateArgs, 5149 TemplateSpecializationKind TSK, 5150 bool Complain = true); 5151 5152 struct LateInstantiatedAttribute { 5153 const Attr *TmplAttr; 5154 LocalInstantiationScope *Scope; 5155 Decl *NewDecl; 5156 5157 LateInstantiatedAttribute(const Attr *A, LocalInstantiationScope *S, 5158 Decl *D) 5159 : TmplAttr(A), Scope(S), NewDecl(D) 5160 { } 5161 }; 5162 typedef SmallVector<LateInstantiatedAttribute, 16> LateInstantiatedAttrVec; 5163 5164 void InstantiateAttrs(const MultiLevelTemplateArgumentList &TemplateArgs, 5165 const Decl *Pattern, Decl *Inst, 5166 LateInstantiatedAttrVec *LateAttrs = 0, 5167 LocalInstantiationScope *OuterMostScope = 0); 5168 5169 bool 5170 InstantiateClassTemplateSpecialization(SourceLocation PointOfInstantiation, 5171 ClassTemplateSpecializationDecl *ClassTemplateSpec, 5172 TemplateSpecializationKind TSK, 5173 bool Complain = true); 5174 5175 void InstantiateClassMembers(SourceLocation PointOfInstantiation, 5176 CXXRecordDecl *Instantiation, 5177 const MultiLevelTemplateArgumentList &TemplateArgs, 5178 TemplateSpecializationKind TSK); 5179 5180 void InstantiateClassTemplateSpecializationMembers( 5181 SourceLocation PointOfInstantiation, 5182 ClassTemplateSpecializationDecl *ClassTemplateSpec, 5183 TemplateSpecializationKind TSK); 5184 5185 NestedNameSpecifierLoc 5186 SubstNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS, 5187 const MultiLevelTemplateArgumentList &TemplateArgs); 5188 5189 DeclarationNameInfo 5190 SubstDeclarationNameInfo(const DeclarationNameInfo &NameInfo, 5191 const MultiLevelTemplateArgumentList &TemplateArgs); 5192 TemplateName 5193 SubstTemplateName(NestedNameSpecifierLoc QualifierLoc, TemplateName Name, 5194 SourceLocation Loc, 5195 const MultiLevelTemplateArgumentList &TemplateArgs); 5196 bool Subst(const TemplateArgumentLoc *Args, unsigned NumArgs, 5197 TemplateArgumentListInfo &Result, 5198 const MultiLevelTemplateArgumentList &TemplateArgs); 5199 5200 void InstantiateFunctionDefinition(SourceLocation PointOfInstantiation, 5201 FunctionDecl *Function, 5202 bool Recursive = false, 5203 bool DefinitionRequired = false); 5204 void InstantiateStaticDataMemberDefinition( 5205 SourceLocation PointOfInstantiation, 5206 VarDecl *Var, 5207 bool Recursive = false, 5208 bool DefinitionRequired = false); 5209 5210 void InstantiateMemInitializers(CXXConstructorDecl *New, 5211 const CXXConstructorDecl *Tmpl, 5212 const MultiLevelTemplateArgumentList &TemplateArgs); 5213 bool InstantiateInitializer(Expr *Init, 5214 const MultiLevelTemplateArgumentList &TemplateArgs, 5215 SourceLocation &LParenLoc, 5216 ASTOwningVector<Expr*> &NewArgs, 5217 SourceLocation &RParenLoc); 5218 5219 NamedDecl *FindInstantiatedDecl(SourceLocation Loc, NamedDecl *D, 5220 const MultiLevelTemplateArgumentList &TemplateArgs); 5221 DeclContext *FindInstantiatedContext(SourceLocation Loc, DeclContext *DC, 5222 const MultiLevelTemplateArgumentList &TemplateArgs); 5223 5224 // Objective-C declarations. 5225 enum ObjCContainerKind { 5226 OCK_None = -1, 5227 OCK_Interface = 0, 5228 OCK_Protocol, 5229 OCK_Category, 5230 OCK_ClassExtension, 5231 OCK_Implementation, 5232 OCK_CategoryImplementation 5233 }; 5234 ObjCContainerKind getObjCContainerKind() const; 5235 5236 Decl *ActOnStartClassInterface(SourceLocation AtInterfaceLoc, 5237 IdentifierInfo *ClassName, 5238 SourceLocation ClassLoc, 5239 IdentifierInfo *SuperName, 5240 SourceLocation SuperLoc, 5241 Decl * const *ProtoRefs, 5242 unsigned NumProtoRefs, 5243 const SourceLocation *ProtoLocs, 5244 SourceLocation EndProtoLoc, 5245 AttributeList *AttrList); 5246 5247 Decl *ActOnCompatiblityAlias( 5248 SourceLocation AtCompatibilityAliasLoc, 5249 IdentifierInfo *AliasName, SourceLocation AliasLocation, 5250 IdentifierInfo *ClassName, SourceLocation ClassLocation); 5251 5252 bool CheckForwardProtocolDeclarationForCircularDependency( 5253 IdentifierInfo *PName, 5254 SourceLocation &PLoc, SourceLocation PrevLoc, 5255 const ObjCList<ObjCProtocolDecl> &PList); 5256 5257 Decl *ActOnStartProtocolInterface( 5258 SourceLocation AtProtoInterfaceLoc, 5259 IdentifierInfo *ProtocolName, SourceLocation ProtocolLoc, 5260 Decl * const *ProtoRefNames, unsigned NumProtoRefs, 5261 const SourceLocation *ProtoLocs, 5262 SourceLocation EndProtoLoc, 5263 AttributeList *AttrList); 5264 5265 Decl *ActOnStartCategoryInterface(SourceLocation AtInterfaceLoc, 5266 IdentifierInfo *ClassName, 5267 SourceLocation ClassLoc, 5268 IdentifierInfo *CategoryName, 5269 SourceLocation CategoryLoc, 5270 Decl * const *ProtoRefs, 5271 unsigned NumProtoRefs, 5272 const SourceLocation *ProtoLocs, 5273 SourceLocation EndProtoLoc); 5274 5275 Decl *ActOnStartClassImplementation( 5276 SourceLocation AtClassImplLoc, 5277 IdentifierInfo *ClassName, SourceLocation ClassLoc, 5278 IdentifierInfo *SuperClassname, 5279 SourceLocation SuperClassLoc); 5280 5281 Decl *ActOnStartCategoryImplementation(SourceLocation AtCatImplLoc, 5282 IdentifierInfo *ClassName, 5283 SourceLocation ClassLoc, 5284 IdentifierInfo *CatName, 5285 SourceLocation CatLoc); 5286 5287 DeclGroupPtrTy ActOnForwardClassDeclaration(SourceLocation Loc, 5288 IdentifierInfo **IdentList, 5289 SourceLocation *IdentLocs, 5290 unsigned NumElts); 5291 5292 DeclGroupPtrTy ActOnForwardProtocolDeclaration(SourceLocation AtProtoclLoc, 5293 const IdentifierLocPair *IdentList, 5294 unsigned NumElts, 5295 AttributeList *attrList); 5296 5297 void FindProtocolDeclaration(bool WarnOnDeclarations, 5298 const IdentifierLocPair *ProtocolId, 5299 unsigned NumProtocols, 5300 SmallVectorImpl<Decl *> &Protocols); 5301 5302 /// Ensure attributes are consistent with type. 5303 /// \param [in, out] Attributes The attributes to check; they will 5304 /// be modified to be consistent with \arg PropertyTy. 5305 void CheckObjCPropertyAttributes(Decl *PropertyPtrTy, 5306 SourceLocation Loc, 5307 unsigned &Attributes); 5308 5309 /// Process the specified property declaration and create decls for the 5310 /// setters and getters as needed. 5311 /// \param property The property declaration being processed 5312 /// \param DC The semantic container for the property 5313 /// \param redeclaredProperty Declaration for property if redeclared 5314 /// in class extension. 5315 /// \param lexicalDC Container for redeclaredProperty. 5316 void ProcessPropertyDecl(ObjCPropertyDecl *property, 5317 ObjCContainerDecl *DC, 5318 ObjCPropertyDecl *redeclaredProperty = 0, 5319 ObjCContainerDecl *lexicalDC = 0); 5320 5321 void DiagnosePropertyMismatch(ObjCPropertyDecl *Property, 5322 ObjCPropertyDecl *SuperProperty, 5323 const IdentifierInfo *Name); 5324 void ComparePropertiesInBaseAndSuper(ObjCInterfaceDecl *IDecl); 5325 5326 void CompareMethodParamsInBaseAndSuper(Decl *IDecl, 5327 ObjCMethodDecl *MethodDecl, 5328 bool IsInstance); 5329 5330 void CompareProperties(Decl *CDecl, Decl *MergeProtocols); 5331 5332 void DiagnoseClassExtensionDupMethods(ObjCCategoryDecl *CAT, 5333 ObjCInterfaceDecl *ID); 5334 5335 void MatchOneProtocolPropertiesInClass(Decl *CDecl, 5336 ObjCProtocolDecl *PDecl); 5337 5338 Decl *ActOnAtEnd(Scope *S, SourceRange AtEnd, 5339 Decl **allMethods = 0, unsigned allNum = 0, 5340 Decl **allProperties = 0, unsigned pNum = 0, 5341 DeclGroupPtrTy *allTUVars = 0, unsigned tuvNum = 0); 5342 5343 Decl *ActOnProperty(Scope *S, SourceLocation AtLoc, 5344 FieldDeclarator &FD, ObjCDeclSpec &ODS, 5345 Selector GetterSel, Selector SetterSel, 5346 bool *OverridingProperty, 5347 tok::ObjCKeywordKind MethodImplKind, 5348 DeclContext *lexicalDC = 0); 5349 5350 Decl *ActOnPropertyImplDecl(Scope *S, 5351 SourceLocation AtLoc, 5352 SourceLocation PropertyLoc, 5353 bool ImplKind, 5354 IdentifierInfo *PropertyId, 5355 IdentifierInfo *PropertyIvar, 5356 SourceLocation PropertyIvarLoc); 5357 5358 enum ObjCSpecialMethodKind { 5359 OSMK_None, 5360 OSMK_Alloc, 5361 OSMK_New, 5362 OSMK_Copy, 5363 OSMK_RetainingInit, 5364 OSMK_NonRetainingInit 5365 }; 5366 5367 struct ObjCArgInfo { 5368 IdentifierInfo *Name; 5369 SourceLocation NameLoc; 5370 // The Type is null if no type was specified, and the DeclSpec is invalid 5371 // in this case. 5372 ParsedType Type; 5373 ObjCDeclSpec DeclSpec; 5374 5375 /// ArgAttrs - Attribute list for this argument. 5376 AttributeList *ArgAttrs; 5377 }; 5378 5379 Decl *ActOnMethodDeclaration( 5380 Scope *S, 5381 SourceLocation BeginLoc, // location of the + or -. 5382 SourceLocation EndLoc, // location of the ; or {. 5383 tok::TokenKind MethodType, 5384 ObjCDeclSpec &ReturnQT, ParsedType ReturnType, 5385 ArrayRef<SourceLocation> SelectorLocs, Selector Sel, 5386 // optional arguments. The number of types/arguments is obtained 5387 // from the Sel.getNumArgs(). 5388 ObjCArgInfo *ArgInfo, 5389 DeclaratorChunk::ParamInfo *CParamInfo, unsigned CNumArgs, // c-style args 5390 AttributeList *AttrList, tok::ObjCKeywordKind MethodImplKind, 5391 bool isVariadic, bool MethodDefinition); 5392 5393 // Helper method for ActOnClassMethod/ActOnInstanceMethod. 5394 // Will search "local" class/category implementations for a method decl. 5395 // Will also search in class's root looking for instance method. 5396 // Returns 0 if no method is found. 5397 ObjCMethodDecl *LookupPrivateClassMethod(Selector Sel, 5398 ObjCInterfaceDecl *CDecl); 5399 ObjCMethodDecl *LookupPrivateInstanceMethod(Selector Sel, 5400 ObjCInterfaceDecl *ClassDecl); 5401 ObjCMethodDecl *LookupMethodInQualifiedType(Selector Sel, 5402 const ObjCObjectPointerType *OPT, 5403 bool IsInstance); 5404 ObjCMethodDecl *LookupMethodInObjectType(Selector Sel, QualType Ty, 5405 bool IsInstance); 5406 5407 bool inferObjCARCLifetime(ValueDecl *decl); 5408 5409 ExprResult 5410 HandleExprPropertyRefExpr(const ObjCObjectPointerType *OPT, 5411 Expr *BaseExpr, 5412 SourceLocation OpLoc, 5413 DeclarationName MemberName, 5414 SourceLocation MemberLoc, 5415 SourceLocation SuperLoc, QualType SuperType, 5416 bool Super); 5417 5418 ExprResult 5419 ActOnClassPropertyRefExpr(IdentifierInfo &receiverName, 5420 IdentifierInfo &propertyName, 5421 SourceLocation receiverNameLoc, 5422 SourceLocation propertyNameLoc); 5423 5424 ObjCMethodDecl *tryCaptureObjCSelf(); 5425 5426 /// \brief Describes the kind of message expression indicated by a message 5427 /// send that starts with an identifier. 5428 enum ObjCMessageKind { 5429 /// \brief The message is sent to 'super'. 5430 ObjCSuperMessage, 5431 /// \brief The message is an instance message. 5432 ObjCInstanceMessage, 5433 /// \brief The message is a class message, and the identifier is a type 5434 /// name. 5435 ObjCClassMessage 5436 }; 5437 5438 ObjCMessageKind getObjCMessageKind(Scope *S, 5439 IdentifierInfo *Name, 5440 SourceLocation NameLoc, 5441 bool IsSuper, 5442 bool HasTrailingDot, 5443 ParsedType &ReceiverType); 5444 5445 ExprResult ActOnSuperMessage(Scope *S, SourceLocation SuperLoc, 5446 Selector Sel, 5447 SourceLocation LBracLoc, 5448 ArrayRef<SourceLocation> SelectorLocs, 5449 SourceLocation RBracLoc, 5450 MultiExprArg Args); 5451 5452 ExprResult BuildClassMessage(TypeSourceInfo *ReceiverTypeInfo, 5453 QualType ReceiverType, 5454 SourceLocation SuperLoc, 5455 Selector Sel, 5456 ObjCMethodDecl *Method, 5457 SourceLocation LBracLoc, 5458 ArrayRef<SourceLocation> SelectorLocs, 5459 SourceLocation RBracLoc, 5460 MultiExprArg Args, 5461 bool isImplicit = false); 5462 5463 ExprResult BuildClassMessageImplicit(QualType ReceiverType, 5464 bool isSuperReceiver, 5465 SourceLocation Loc, 5466 Selector Sel, 5467 ObjCMethodDecl *Method, 5468 MultiExprArg Args); 5469 5470 ExprResult ActOnClassMessage(Scope *S, 5471 ParsedType Receiver, 5472 Selector Sel, 5473 SourceLocation LBracLoc, 5474 ArrayRef<SourceLocation> SelectorLocs, 5475 SourceLocation RBracLoc, 5476 MultiExprArg Args); 5477 5478 ExprResult BuildInstanceMessage(Expr *Receiver, 5479 QualType ReceiverType, 5480 SourceLocation SuperLoc, 5481 Selector Sel, 5482 ObjCMethodDecl *Method, 5483 SourceLocation LBracLoc, 5484 ArrayRef<SourceLocation> SelectorLocs, 5485 SourceLocation RBracLoc, 5486 MultiExprArg Args, 5487 bool isImplicit = false); 5488 5489 ExprResult BuildInstanceMessageImplicit(Expr *Receiver, 5490 QualType ReceiverType, 5491 SourceLocation Loc, 5492 Selector Sel, 5493 ObjCMethodDecl *Method, 5494 MultiExprArg Args); 5495 5496 ExprResult ActOnInstanceMessage(Scope *S, 5497 Expr *Receiver, 5498 Selector Sel, 5499 SourceLocation LBracLoc, 5500 ArrayRef<SourceLocation> SelectorLocs, 5501 SourceLocation RBracLoc, 5502 MultiExprArg Args); 5503 5504 ExprResult BuildObjCBridgedCast(SourceLocation LParenLoc, 5505 ObjCBridgeCastKind Kind, 5506 SourceLocation BridgeKeywordLoc, 5507 TypeSourceInfo *TSInfo, 5508 Expr *SubExpr); 5509 5510 ExprResult ActOnObjCBridgedCast(Scope *S, 5511 SourceLocation LParenLoc, 5512 ObjCBridgeCastKind Kind, 5513 SourceLocation BridgeKeywordLoc, 5514 ParsedType Type, 5515 SourceLocation RParenLoc, 5516 Expr *SubExpr); 5517 5518 bool checkInitMethod(ObjCMethodDecl *method, QualType receiverTypeIfCall); 5519 5520 /// \brief Check whether the given new method is a valid override of the 5521 /// given overridden method, and set any properties that should be inherited. 5522 void CheckObjCMethodOverride(ObjCMethodDecl *NewMethod, 5523 const ObjCMethodDecl *Overridden, 5524 bool IsImplementation); 5525 5526 /// \brief Check whether the given method overrides any methods in its class, 5527 /// calling \c CheckObjCMethodOverride for each overridden method. 5528 bool CheckObjCMethodOverrides(ObjCMethodDecl *NewMethod, DeclContext *DC); 5529 5530 enum PragmaOptionsAlignKind { 5531 POAK_Native, // #pragma options align=native 5532 POAK_Natural, // #pragma options align=natural 5533 POAK_Packed, // #pragma options align=packed 5534 POAK_Power, // #pragma options align=power 5535 POAK_Mac68k, // #pragma options align=mac68k 5536 POAK_Reset // #pragma options align=reset 5537 }; 5538 5539 /// ActOnPragmaOptionsAlign - Called on well formed #pragma options align. 5540 void ActOnPragmaOptionsAlign(PragmaOptionsAlignKind Kind, 5541 SourceLocation PragmaLoc, 5542 SourceLocation KindLoc); 5543 5544 enum PragmaPackKind { 5545 PPK_Default, // #pragma pack([n]) 5546 PPK_Show, // #pragma pack(show), only supported by MSVC. 5547 PPK_Push, // #pragma pack(push, [identifier], [n]) 5548 PPK_Pop // #pragma pack(pop, [identifier], [n]) 5549 }; 5550 5551 enum PragmaMSStructKind { 5552 PMSST_OFF, // #pragms ms_struct off 5553 PMSST_ON // #pragms ms_struct on 5554 }; 5555 5556 /// ActOnPragmaPack - Called on well formed #pragma pack(...). 5557 void ActOnPragmaPack(PragmaPackKind Kind, 5558 IdentifierInfo *Name, 5559 Expr *Alignment, 5560 SourceLocation PragmaLoc, 5561 SourceLocation LParenLoc, 5562 SourceLocation RParenLoc); 5563 5564 /// ActOnPragmaMSStruct - Called on well formed #pragms ms_struct [on|off]. 5565 void ActOnPragmaMSStruct(PragmaMSStructKind Kind); 5566 5567 /// ActOnPragmaUnused - Called on well-formed '#pragma unused'. 5568 void ActOnPragmaUnused(const Token &Identifier, 5569 Scope *curScope, 5570 SourceLocation PragmaLoc); 5571 5572 /// ActOnPragmaVisibility - Called on well formed #pragma GCC visibility... . 5573 void ActOnPragmaVisibility(const IdentifierInfo* VisType, 5574 SourceLocation PragmaLoc); 5575 5576 NamedDecl *DeclClonePragmaWeak(NamedDecl *ND, IdentifierInfo *II, 5577 SourceLocation Loc); 5578 void DeclApplyPragmaWeak(Scope *S, NamedDecl *ND, WeakInfo &W); 5579 5580 /// ActOnPragmaWeakID - Called on well formed #pragma weak ident. 5581 void ActOnPragmaWeakID(IdentifierInfo* WeakName, 5582 SourceLocation PragmaLoc, 5583 SourceLocation WeakNameLoc); 5584 5585 /// ActOnPragmaWeakAlias - Called on well formed #pragma weak ident = ident. 5586 void ActOnPragmaWeakAlias(IdentifierInfo* WeakName, 5587 IdentifierInfo* AliasName, 5588 SourceLocation PragmaLoc, 5589 SourceLocation WeakNameLoc, 5590 SourceLocation AliasNameLoc); 5591 5592 /// ActOnPragmaFPContract - Called on well formed 5593 /// #pragma {STDC,OPENCL} FP_CONTRACT 5594 void ActOnPragmaFPContract(tok::OnOffSwitch OOS); 5595 5596 /// AddAlignmentAttributesForRecord - Adds any needed alignment attributes to 5597 /// a the record decl, to handle '#pragma pack' and '#pragma options align'. 5598 void AddAlignmentAttributesForRecord(RecordDecl *RD); 5599 5600 /// AddMsStructLayoutForRecord - Adds ms_struct layout attribute to record. 5601 void AddMsStructLayoutForRecord(RecordDecl *RD); 5602 5603 /// FreePackedContext - Deallocate and null out PackContext. 5604 void FreePackedContext(); 5605 5606 /// PushNamespaceVisibilityAttr - Note that we've entered a 5607 /// namespace with a visibility attribute. 5608 void PushNamespaceVisibilityAttr(const VisibilityAttr *Attr); 5609 5610 /// AddPushedVisibilityAttribute - If '#pragma GCC visibility' was used, 5611 /// add an appropriate visibility attribute. 5612 void AddPushedVisibilityAttribute(Decl *RD); 5613 5614 /// PopPragmaVisibility - Pop the top element of the visibility stack; used 5615 /// for '#pragma GCC visibility' and visibility attributes on namespaces. 5616 void PopPragmaVisibility(); 5617 5618 /// FreeVisContext - Deallocate and null out VisContext. 5619 void FreeVisContext(); 5620 5621 /// AddCFAuditedAttribute - Check whether we're currently within 5622 /// '#pragma clang arc_cf_code_audited' and, if so, consider adding 5623 /// the appropriate attribute. 5624 void AddCFAuditedAttribute(Decl *D); 5625 5626 /// AddAlignedAttr - Adds an aligned attribute to a particular declaration. 5627 void AddAlignedAttr(SourceRange AttrRange, Decl *D, Expr *E); 5628 void AddAlignedAttr(SourceRange AttrRange, Decl *D, TypeSourceInfo *T); 5629 5630 /// \brief The kind of conversion being performed. 5631 enum CheckedConversionKind { 5632 /// \brief An implicit conversion. 5633 CCK_ImplicitConversion, 5634 /// \brief A C-style cast. 5635 CCK_CStyleCast, 5636 /// \brief A functional-style cast. 5637 CCK_FunctionalCast, 5638 /// \brief A cast other than a C-style cast. 5639 CCK_OtherCast 5640 }; 5641 5642 /// ImpCastExprToType - If Expr is not of type 'Type', insert an implicit 5643 /// cast. If there is already an implicit cast, merge into the existing one. 5644 /// If isLvalue, the result of the cast is an lvalue. 5645 ExprResult ImpCastExprToType(Expr *E, QualType Type, CastKind CK, 5646 ExprValueKind VK = VK_RValue, 5647 const CXXCastPath *BasePath = 0, 5648 CheckedConversionKind CCK 5649 = CCK_ImplicitConversion); 5650 5651 /// ScalarTypeToBooleanCastKind - Returns the cast kind corresponding 5652 /// to the conversion from scalar type ScalarTy to the Boolean type. 5653 static CastKind ScalarTypeToBooleanCastKind(QualType ScalarTy); 5654 5655 /// IgnoredValueConversions - Given that an expression's result is 5656 /// syntactically ignored, perform any conversions that are 5657 /// required. 5658 ExprResult IgnoredValueConversions(Expr *E); 5659 5660 // UsualUnaryConversions - promotes integers (C99 6.3.1.1p2) and converts 5661 // functions and arrays to their respective pointers (C99 6.3.2.1). 5662 ExprResult UsualUnaryConversions(Expr *E); 5663 5664 // DefaultFunctionArrayConversion - converts functions and arrays 5665 // to their respective pointers (C99 6.3.2.1). 5666 ExprResult DefaultFunctionArrayConversion(Expr *E); 5667 5668 // DefaultFunctionArrayLvalueConversion - converts functions and 5669 // arrays to their respective pointers and performs the 5670 // lvalue-to-rvalue conversion. 5671 ExprResult DefaultFunctionArrayLvalueConversion(Expr *E); 5672 5673 // DefaultLvalueConversion - performs lvalue-to-rvalue conversion on 5674 // the operand. This is DefaultFunctionArrayLvalueConversion, 5675 // except that it assumes the operand isn't of function or array 5676 // type. 5677 ExprResult DefaultLvalueConversion(Expr *E); 5678 5679 // DefaultArgumentPromotion (C99 6.5.2.2p6). Used for function calls that 5680 // do not have a prototype. Integer promotions are performed on each 5681 // argument, and arguments that have type float are promoted to double. 5682 ExprResult DefaultArgumentPromotion(Expr *E); 5683 5684 // Used for emitting the right warning by DefaultVariadicArgumentPromotion 5685 enum VariadicCallType { 5686 VariadicFunction, 5687 VariadicBlock, 5688 VariadicMethod, 5689 VariadicConstructor, 5690 VariadicDoesNotApply 5691 }; 5692 5693 /// GatherArgumentsForCall - Collector argument expressions for various 5694 /// form of call prototypes. 5695 bool GatherArgumentsForCall(SourceLocation CallLoc, 5696 FunctionDecl *FDecl, 5697 const FunctionProtoType *Proto, 5698 unsigned FirstProtoArg, 5699 Expr **Args, unsigned NumArgs, 5700 SmallVector<Expr *, 8> &AllArgs, 5701 VariadicCallType CallType = VariadicDoesNotApply); 5702 5703 // DefaultVariadicArgumentPromotion - Like DefaultArgumentPromotion, but 5704 // will warn if the resulting type is not a POD type. 5705 ExprResult DefaultVariadicArgumentPromotion(Expr *E, VariadicCallType CT, 5706 FunctionDecl *FDecl); 5707 5708 // UsualArithmeticConversions - performs the UsualUnaryConversions on it's 5709 // operands and then handles various conversions that are common to binary 5710 // operators (C99 6.3.1.8). If both operands aren't arithmetic, this 5711 // routine returns the first non-arithmetic type found. The client is 5712 // responsible for emitting appropriate error diagnostics. 5713 QualType UsualArithmeticConversions(ExprResult &LHS, ExprResult &RHS, 5714 bool IsCompAssign = false); 5715 5716 /// AssignConvertType - All of the 'assignment' semantic checks return this 5717 /// enum to indicate whether the assignment was allowed. These checks are 5718 /// done for simple assignments, as well as initialization, return from 5719 /// function, argument passing, etc. The query is phrased in terms of a 5720 /// source and destination type. 5721 enum AssignConvertType { 5722 /// Compatible - the types are compatible according to the standard. 5723 Compatible, 5724 5725 /// PointerToInt - The assignment converts a pointer to an int, which we 5726 /// accept as an extension. 5727 PointerToInt, 5728 5729 /// IntToPointer - The assignment converts an int to a pointer, which we 5730 /// accept as an extension. 5731 IntToPointer, 5732 5733 /// FunctionVoidPointer - The assignment is between a function pointer and 5734 /// void*, which the standard doesn't allow, but we accept as an extension. 5735 FunctionVoidPointer, 5736 5737 /// IncompatiblePointer - The assignment is between two pointers types that 5738 /// are not compatible, but we accept them as an extension. 5739 IncompatiblePointer, 5740 5741 /// IncompatiblePointer - The assignment is between two pointers types which 5742 /// point to integers which have a different sign, but are otherwise 5743 /// identical. This is a subset of the above, but broken out because it's by 5744 /// far the most common case of incompatible pointers. 5745 IncompatiblePointerSign, 5746 5747 /// CompatiblePointerDiscardsQualifiers - The assignment discards 5748 /// c/v/r qualifiers, which we accept as an extension. 5749 CompatiblePointerDiscardsQualifiers, 5750 5751 /// IncompatiblePointerDiscardsQualifiers - The assignment 5752 /// discards qualifiers that we don't permit to be discarded, 5753 /// like address spaces. 5754 IncompatiblePointerDiscardsQualifiers, 5755 5756 /// IncompatibleNestedPointerQualifiers - The assignment is between two 5757 /// nested pointer types, and the qualifiers other than the first two 5758 /// levels differ e.g. char ** -> const char **, but we accept them as an 5759 /// extension. 5760 IncompatibleNestedPointerQualifiers, 5761 5762 /// IncompatibleVectors - The assignment is between two vector types that 5763 /// have the same size, which we accept as an extension. 5764 IncompatibleVectors, 5765 5766 /// IntToBlockPointer - The assignment converts an int to a block 5767 /// pointer. We disallow this. 5768 IntToBlockPointer, 5769 5770 /// IncompatibleBlockPointer - The assignment is between two block 5771 /// pointers types that are not compatible. 5772 IncompatibleBlockPointer, 5773 5774 /// IncompatibleObjCQualifiedId - The assignment is between a qualified 5775 /// id type and something else (that is incompatible with it). For example, 5776 /// "id <XXX>" = "Foo *", where "Foo *" doesn't implement the XXX protocol. 5777 IncompatibleObjCQualifiedId, 5778 5779 /// IncompatibleObjCWeakRef - Assigning a weak-unavailable object to an 5780 /// object with __weak qualifier. 5781 IncompatibleObjCWeakRef, 5782 5783 /// Incompatible - We reject this conversion outright, it is invalid to 5784 /// represent it in the AST. 5785 Incompatible 5786 }; 5787 5788 /// DiagnoseAssignmentResult - Emit a diagnostic, if required, for the 5789 /// assignment conversion type specified by ConvTy. This returns true if the 5790 /// conversion was invalid or false if the conversion was accepted. 5791 bool DiagnoseAssignmentResult(AssignConvertType ConvTy, 5792 SourceLocation Loc, 5793 QualType DstType, QualType SrcType, 5794 Expr *SrcExpr, AssignmentAction Action, 5795 bool *Complained = 0); 5796 5797 /// CheckAssignmentConstraints - Perform type checking for assignment, 5798 /// argument passing, variable initialization, and function return values. 5799 /// C99 6.5.16. 5800 AssignConvertType CheckAssignmentConstraints(SourceLocation Loc, 5801 QualType LHSType, 5802 QualType RHSType); 5803 5804 /// Check assignment constraints and prepare for a conversion of the 5805 /// RHS to the LHS type. 5806 AssignConvertType CheckAssignmentConstraints(QualType LHSType, 5807 ExprResult &RHS, 5808 CastKind &Kind); 5809 5810 // CheckSingleAssignmentConstraints - Currently used by 5811 // CheckAssignmentOperands, and ActOnReturnStmt. Prior to type checking, 5812 // this routine performs the default function/array converions. 5813 AssignConvertType CheckSingleAssignmentConstraints(QualType LHSType, 5814 ExprResult &RHS, 5815 bool Diagnose = true); 5816 5817 // \brief If the lhs type is a transparent union, check whether we 5818 // can initialize the transparent union with the given expression. 5819 AssignConvertType CheckTransparentUnionArgumentConstraints(QualType ArgType, 5820 ExprResult &RHS); 5821 5822 bool IsStringLiteralToNonConstPointerConversion(Expr *From, QualType ToType); 5823 5824 bool CheckExceptionSpecCompatibility(Expr *From, QualType ToType); 5825 5826 ExprResult PerformImplicitConversion(Expr *From, QualType ToType, 5827 AssignmentAction Action, 5828 bool AllowExplicit = false); 5829 ExprResult PerformImplicitConversion(Expr *From, QualType ToType, 5830 AssignmentAction Action, 5831 bool AllowExplicit, 5832 ImplicitConversionSequence& ICS); 5833 ExprResult PerformImplicitConversion(Expr *From, QualType ToType, 5834 const ImplicitConversionSequence& ICS, 5835 AssignmentAction Action, 5836 CheckedConversionKind CCK 5837 = CCK_ImplicitConversion); 5838 ExprResult PerformImplicitConversion(Expr *From, QualType ToType, 5839 const StandardConversionSequence& SCS, 5840 AssignmentAction Action, 5841 CheckedConversionKind CCK); 5842 5843 /// the following "Check" methods will return a valid/converted QualType 5844 /// or a null QualType (indicating an error diagnostic was issued). 5845 5846 /// type checking binary operators (subroutines of CreateBuiltinBinOp). 5847 QualType InvalidOperands(SourceLocation Loc, ExprResult &LHS, 5848 ExprResult &RHS); 5849 QualType CheckPointerToMemberOperands( // C++ 5.5 5850 ExprResult &LHS, ExprResult &RHS, ExprValueKind &VK, 5851 SourceLocation OpLoc, bool isIndirect); 5852 QualType CheckMultiplyDivideOperands( // C99 6.5.5 5853 ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, bool IsCompAssign, 5854 bool IsDivide); 5855 QualType CheckRemainderOperands( // C99 6.5.5 5856 ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, 5857 bool IsCompAssign = false); 5858 QualType CheckAdditionOperands( // C99 6.5.6 5859 ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, 5860 QualType* CompLHSTy = 0); 5861 QualType CheckSubtractionOperands( // C99 6.5.6 5862 ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, 5863 QualType* CompLHSTy = 0); 5864 QualType CheckShiftOperands( // C99 6.5.7 5865 ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, unsigned Opc, 5866 bool IsCompAssign = false); 5867 QualType CheckCompareOperands( // C99 6.5.8/9 5868 ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, unsigned OpaqueOpc, 5869 bool isRelational); 5870 QualType CheckBitwiseOperands( // C99 6.5.[10...12] 5871 ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, 5872 bool IsCompAssign = false); 5873 QualType CheckLogicalOperands( // C99 6.5.[13,14] 5874 ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, unsigned Opc); 5875 // CheckAssignmentOperands is used for both simple and compound assignment. 5876 // For simple assignment, pass both expressions and a null converted type. 5877 // For compound assignment, pass both expressions and the converted type. 5878 QualType CheckAssignmentOperands( // C99 6.5.16.[1,2] 5879 Expr *LHSExpr, ExprResult &RHS, SourceLocation Loc, QualType CompoundType); 5880 5881 ExprResult checkPseudoObjectIncDec(Scope *S, SourceLocation OpLoc, 5882 UnaryOperatorKind Opcode, Expr *Op); 5883 ExprResult checkPseudoObjectAssignment(Scope *S, SourceLocation OpLoc, 5884 BinaryOperatorKind Opcode, 5885 Expr *LHS, Expr *RHS); 5886 ExprResult checkPseudoObjectRValue(Expr *E); 5887 Expr *recreateSyntacticForm(PseudoObjectExpr *E); 5888 5889 QualType CheckConditionalOperands( // C99 6.5.15 5890 ExprResult &Cond, ExprResult &LHS, ExprResult &RHS, 5891 ExprValueKind &VK, ExprObjectKind &OK, SourceLocation QuestionLoc); 5892 QualType CXXCheckConditionalOperands( // C++ 5.16 5893 ExprResult &cond, ExprResult &lhs, ExprResult &rhs, 5894 ExprValueKind &VK, ExprObjectKind &OK, SourceLocation questionLoc); 5895 QualType FindCompositePointerType(SourceLocation Loc, Expr *&E1, Expr *&E2, 5896 bool *NonStandardCompositeType = 0); 5897 QualType FindCompositePointerType(SourceLocation Loc, 5898 ExprResult &E1, ExprResult &E2, 5899 bool *NonStandardCompositeType = 0) { 5900 Expr *E1Tmp = E1.take(), *E2Tmp = E2.take(); 5901 QualType Composite = FindCompositePointerType(Loc, E1Tmp, E2Tmp, 5902 NonStandardCompositeType); 5903 E1 = Owned(E1Tmp); 5904 E2 = Owned(E2Tmp); 5905 return Composite; 5906 } 5907 5908 QualType FindCompositeObjCPointerType(ExprResult &LHS, ExprResult &RHS, 5909 SourceLocation QuestionLoc); 5910 5911 bool DiagnoseConditionalForNull(Expr *LHSExpr, Expr *RHSExpr, 5912 SourceLocation QuestionLoc); 5913 5914 /// type checking for vector binary operators. 5915 QualType CheckVectorOperands(ExprResult &LHS, ExprResult &RHS, 5916 SourceLocation Loc, bool IsCompAssign); 5917 QualType GetSignedVectorType(QualType V); 5918 QualType CheckVectorCompareOperands(ExprResult &LHS, ExprResult &RHS, 5919 SourceLocation Loc, bool isRelational); 5920 QualType CheckVectorLogicalOperands(ExprResult &LHS, ExprResult &RHS, 5921 SourceLocation Loc); 5922 5923 /// type checking declaration initializers (C99 6.7.8) 5924 bool CheckForConstantInitializer(Expr *e, QualType t); 5925 5926 // type checking C++ declaration initializers (C++ [dcl.init]). 5927 5928 /// ReferenceCompareResult - Expresses the result of comparing two 5929 /// types (cv1 T1 and cv2 T2) to determine their compatibility for the 5930 /// purposes of initialization by reference (C++ [dcl.init.ref]p4). 5931 enum ReferenceCompareResult { 5932 /// Ref_Incompatible - The two types are incompatible, so direct 5933 /// reference binding is not possible. 5934 Ref_Incompatible = 0, 5935 /// Ref_Related - The two types are reference-related, which means 5936 /// that their unqualified forms (T1 and T2) are either the same 5937 /// or T1 is a base class of T2. 5938 Ref_Related, 5939 /// Ref_Compatible_With_Added_Qualification - The two types are 5940 /// reference-compatible with added qualification, meaning that 5941 /// they are reference-compatible and the qualifiers on T1 (cv1) 5942 /// are greater than the qualifiers on T2 (cv2). 5943 Ref_Compatible_With_Added_Qualification, 5944 /// Ref_Compatible - The two types are reference-compatible and 5945 /// have equivalent qualifiers (cv1 == cv2). 5946 Ref_Compatible 5947 }; 5948 5949 ReferenceCompareResult CompareReferenceRelationship(SourceLocation Loc, 5950 QualType T1, QualType T2, 5951 bool &DerivedToBase, 5952 bool &ObjCConversion, 5953 bool &ObjCLifetimeConversion); 5954 5955 ExprResult checkUnknownAnyCast(SourceRange TypeRange, QualType CastType, 5956 Expr *CastExpr, CastKind &CastKind, 5957 ExprValueKind &VK, CXXCastPath &Path); 5958 5959 /// \brief Force an expression with unknown-type to an expression of the 5960 /// given type. 5961 ExprResult forceUnknownAnyToType(Expr *E, QualType ToType); 5962 5963 // CheckVectorCast - check type constraints for vectors. 5964 // Since vectors are an extension, there are no C standard reference for this. 5965 // We allow casting between vectors and integer datatypes of the same size. 5966 // returns true if the cast is invalid 5967 bool CheckVectorCast(SourceRange R, QualType VectorTy, QualType Ty, 5968 CastKind &Kind); 5969 5970 // CheckExtVectorCast - check type constraints for extended vectors. 5971 // Since vectors are an extension, there are no C standard reference for this. 5972 // We allow casting between vectors and integer datatypes of the same size, 5973 // or vectors and the element type of that vector. 5974 // returns the cast expr 5975 ExprResult CheckExtVectorCast(SourceRange R, QualType DestTy, Expr *CastExpr, 5976 CastKind &Kind); 5977 5978 ExprResult BuildCXXFunctionalCastExpr(TypeSourceInfo *TInfo, 5979 SourceLocation LParenLoc, 5980 Expr *CastExpr, 5981 SourceLocation RParenLoc); 5982 5983 enum ARCConversionResult { ACR_okay, ACR_unbridged }; 5984 5985 /// \brief Checks for invalid conversions and casts between 5986 /// retainable pointers and other pointer kinds. 5987 ARCConversionResult CheckObjCARCConversion(SourceRange castRange, 5988 QualType castType, Expr *&op, 5989 CheckedConversionKind CCK); 5990 5991 Expr *stripARCUnbridgedCast(Expr *e); 5992 void diagnoseARCUnbridgedCast(Expr *e); 5993 5994 bool CheckObjCARCUnavailableWeakConversion(QualType castType, 5995 QualType ExprType); 5996 5997 /// checkRetainCycles - Check whether an Objective-C message send 5998 /// might create an obvious retain cycle. 5999 void checkRetainCycles(ObjCMessageExpr *msg); 6000 void checkRetainCycles(Expr *receiver, Expr *argument); 6001 6002 /// checkUnsafeAssigns - Check whether +1 expr is being assigned 6003 /// to weak/__unsafe_unretained type. 6004 bool checkUnsafeAssigns(SourceLocation Loc, QualType LHS, Expr *RHS); 6005 6006 /// checkUnsafeExprAssigns - Check whether +1 expr is being assigned 6007 /// to weak/__unsafe_unretained expression. 6008 void checkUnsafeExprAssigns(SourceLocation Loc, Expr *LHS, Expr *RHS); 6009 6010 /// CheckMessageArgumentTypes - Check types in an Obj-C message send. 6011 /// \param Method - May be null. 6012 /// \param [out] ReturnType - The return type of the send. 6013 /// \return true iff there were any incompatible types. 6014 bool CheckMessageArgumentTypes(QualType ReceiverType, 6015 Expr **Args, unsigned NumArgs, Selector Sel, 6016 ObjCMethodDecl *Method, bool isClassMessage, 6017 bool isSuperMessage, 6018 SourceLocation lbrac, SourceLocation rbrac, 6019 QualType &ReturnType, ExprValueKind &VK); 6020 6021 /// \brief Determine the result of a message send expression based on 6022 /// the type of the receiver, the method expected to receive the message, 6023 /// and the form of the message send. 6024 QualType getMessageSendResultType(QualType ReceiverType, 6025 ObjCMethodDecl *Method, 6026 bool isClassMessage, bool isSuperMessage); 6027 6028 /// \brief If the given expression involves a message send to a method 6029 /// with a related result type, emit a note describing what happened. 6030 void EmitRelatedResultTypeNote(const Expr *E); 6031 6032 /// CheckBooleanCondition - Diagnose problems involving the use of 6033 /// the given expression as a boolean condition (e.g. in an if 6034 /// statement). Also performs the standard function and array 6035 /// decays, possibly changing the input variable. 6036 /// 6037 /// \param Loc - A location associated with the condition, e.g. the 6038 /// 'if' keyword. 6039 /// \return true iff there were any errors 6040 ExprResult CheckBooleanCondition(Expr *E, SourceLocation Loc); 6041 6042 ExprResult ActOnBooleanCondition(Scope *S, SourceLocation Loc, 6043 Expr *SubExpr); 6044 6045 /// DiagnoseAssignmentAsCondition - Given that an expression is 6046 /// being used as a boolean condition, warn if it's an assignment. 6047 void DiagnoseAssignmentAsCondition(Expr *E); 6048 6049 /// \brief Redundant parentheses over an equality comparison can indicate 6050 /// that the user intended an assignment used as condition. 6051 void DiagnoseEqualityWithExtraParens(ParenExpr *ParenE); 6052 6053 /// CheckCXXBooleanCondition - Returns true if conversion to bool is invalid. 6054 ExprResult CheckCXXBooleanCondition(Expr *CondExpr); 6055 6056 /// ConvertIntegerToTypeWarnOnOverflow - Convert the specified APInt to have 6057 /// the specified width and sign. If an overflow occurs, detect it and emit 6058 /// the specified diagnostic. 6059 void ConvertIntegerToTypeWarnOnOverflow(llvm::APSInt &OldVal, 6060 unsigned NewWidth, bool NewSign, 6061 SourceLocation Loc, unsigned DiagID); 6062 6063 /// Checks that the Objective-C declaration is declared in the global scope. 6064 /// Emits an error and marks the declaration as invalid if it's not declared 6065 /// in the global scope. 6066 bool CheckObjCDeclScope(Decl *D); 6067 6068 /// VerifyIntegerConstantExpression - Verifies that an expression is an ICE, 6069 /// and reports the appropriate diagnostics. Returns false on success. 6070 /// Can optionally return the value of the expression. 6071 bool VerifyIntegerConstantExpression(const Expr *E, llvm::APSInt *Result = 0, 6072 unsigned DiagId = 0, 6073 bool AllowFold = true); 6074 6075 /// VerifyBitField - verifies that a bit field expression is an ICE and has 6076 /// the correct width, and that the field type is valid. 6077 /// Returns false on success. 6078 /// Can optionally return whether the bit-field is of width 0 6079 bool VerifyBitField(SourceLocation FieldLoc, IdentifierInfo *FieldName, 6080 QualType FieldTy, const Expr *BitWidth, 6081 bool *ZeroWidth = 0); 6082 6083 enum CUDAFunctionTarget { 6084 CFT_Device, 6085 CFT_Global, 6086 CFT_Host, 6087 CFT_HostDevice 6088 }; 6089 6090 CUDAFunctionTarget IdentifyCUDATarget(const FunctionDecl *D); 6091 6092 bool CheckCUDATarget(CUDAFunctionTarget CallerTarget, 6093 CUDAFunctionTarget CalleeTarget); 6094 6095 bool CheckCUDATarget(const FunctionDecl *Caller, const FunctionDecl *Callee) { 6096 return CheckCUDATarget(IdentifyCUDATarget(Caller), 6097 IdentifyCUDATarget(Callee)); 6098 } 6099 6100 /// \name Code completion 6101 //@{ 6102 /// \brief Describes the context in which code completion occurs. 6103 enum ParserCompletionContext { 6104 /// \brief Code completion occurs at top-level or namespace context. 6105 PCC_Namespace, 6106 /// \brief Code completion occurs within a class, struct, or union. 6107 PCC_Class, 6108 /// \brief Code completion occurs within an Objective-C interface, protocol, 6109 /// or category. 6110 PCC_ObjCInterface, 6111 /// \brief Code completion occurs within an Objective-C implementation or 6112 /// category implementation 6113 PCC_ObjCImplementation, 6114 /// \brief Code completion occurs within the list of instance variables 6115 /// in an Objective-C interface, protocol, category, or implementation. 6116 PCC_ObjCInstanceVariableList, 6117 /// \brief Code completion occurs following one or more template 6118 /// headers. 6119 PCC_Template, 6120 /// \brief Code completion occurs following one or more template 6121 /// headers within a class. 6122 PCC_MemberTemplate, 6123 /// \brief Code completion occurs within an expression. 6124 PCC_Expression, 6125 /// \brief Code completion occurs within a statement, which may 6126 /// also be an expression or a declaration. 6127 PCC_Statement, 6128 /// \brief Code completion occurs at the beginning of the 6129 /// initialization statement (or expression) in a for loop. 6130 PCC_ForInit, 6131 /// \brief Code completion occurs within the condition of an if, 6132 /// while, switch, or for statement. 6133 PCC_Condition, 6134 /// \brief Code completion occurs within the body of a function on a 6135 /// recovery path, where we do not have a specific handle on our position 6136 /// in the grammar. 6137 PCC_RecoveryInFunction, 6138 /// \brief Code completion occurs where only a type is permitted. 6139 PCC_Type, 6140 /// \brief Code completion occurs in a parenthesized expression, which 6141 /// might also be a type cast. 6142 PCC_ParenthesizedExpression, 6143 /// \brief Code completion occurs within a sequence of declaration 6144 /// specifiers within a function, method, or block. 6145 PCC_LocalDeclarationSpecifiers 6146 }; 6147 6148 void CodeCompleteOrdinaryName(Scope *S, 6149 ParserCompletionContext CompletionContext); 6150 void CodeCompleteDeclSpec(Scope *S, DeclSpec &DS, 6151 bool AllowNonIdentifiers, 6152 bool AllowNestedNameSpecifiers); 6153 6154 struct CodeCompleteExpressionData; 6155 void CodeCompleteExpression(Scope *S, 6156 const CodeCompleteExpressionData &Data); 6157 void CodeCompleteMemberReferenceExpr(Scope *S, Expr *Base, 6158 SourceLocation OpLoc, 6159 bool IsArrow); 6160 void CodeCompletePostfixExpression(Scope *S, ExprResult LHS); 6161 void CodeCompleteTag(Scope *S, unsigned TagSpec); 6162 void CodeCompleteTypeQualifiers(DeclSpec &DS); 6163 void CodeCompleteCase(Scope *S); 6164 void CodeCompleteCall(Scope *S, Expr *Fn, Expr **Args, unsigned NumArgs); 6165 void CodeCompleteInitializer(Scope *S, Decl *D); 6166 void CodeCompleteReturn(Scope *S); 6167 void CodeCompleteAfterIf(Scope *S); 6168 void CodeCompleteAssignmentRHS(Scope *S, Expr *LHS); 6169 6170 void CodeCompleteQualifiedId(Scope *S, CXXScopeSpec &SS, 6171 bool EnteringContext); 6172 void CodeCompleteUsing(Scope *S); 6173 void CodeCompleteUsingDirective(Scope *S); 6174 void CodeCompleteNamespaceDecl(Scope *S); 6175 void CodeCompleteNamespaceAliasDecl(Scope *S); 6176 void CodeCompleteOperatorName(Scope *S); 6177 void CodeCompleteConstructorInitializer(Decl *Constructor, 6178 CXXCtorInitializer** Initializers, 6179 unsigned NumInitializers); 6180 6181 void CodeCompleteObjCAtDirective(Scope *S); 6182 void CodeCompleteObjCAtVisibility(Scope *S); 6183 void CodeCompleteObjCAtStatement(Scope *S); 6184 void CodeCompleteObjCAtExpression(Scope *S); 6185 void CodeCompleteObjCPropertyFlags(Scope *S, ObjCDeclSpec &ODS); 6186 void CodeCompleteObjCPropertyGetter(Scope *S); 6187 void CodeCompleteObjCPropertySetter(Scope *S); 6188 void CodeCompleteObjCPassingType(Scope *S, ObjCDeclSpec &DS, 6189 bool IsParameter); 6190 void CodeCompleteObjCMessageReceiver(Scope *S); 6191 void CodeCompleteObjCSuperMessage(Scope *S, SourceLocation SuperLoc, 6192 IdentifierInfo **SelIdents, 6193 unsigned NumSelIdents, 6194 bool AtArgumentExpression); 6195 void CodeCompleteObjCClassMessage(Scope *S, ParsedType Receiver, 6196 IdentifierInfo **SelIdents, 6197 unsigned NumSelIdents, 6198 bool AtArgumentExpression, 6199 bool IsSuper = false); 6200 void CodeCompleteObjCInstanceMessage(Scope *S, Expr *Receiver, 6201 IdentifierInfo **SelIdents, 6202 unsigned NumSelIdents, 6203 bool AtArgumentExpression, 6204 ObjCInterfaceDecl *Super = 0); 6205 void CodeCompleteObjCForCollection(Scope *S, 6206 DeclGroupPtrTy IterationVar); 6207 void CodeCompleteObjCSelector(Scope *S, 6208 IdentifierInfo **SelIdents, 6209 unsigned NumSelIdents); 6210 void CodeCompleteObjCProtocolReferences(IdentifierLocPair *Protocols, 6211 unsigned NumProtocols); 6212 void CodeCompleteObjCProtocolDecl(Scope *S); 6213 void CodeCompleteObjCInterfaceDecl(Scope *S); 6214 void CodeCompleteObjCSuperclass(Scope *S, 6215 IdentifierInfo *ClassName, 6216 SourceLocation ClassNameLoc); 6217 void CodeCompleteObjCImplementationDecl(Scope *S); 6218 void CodeCompleteObjCInterfaceCategory(Scope *S, 6219 IdentifierInfo *ClassName, 6220 SourceLocation ClassNameLoc); 6221 void CodeCompleteObjCImplementationCategory(Scope *S, 6222 IdentifierInfo *ClassName, 6223 SourceLocation ClassNameLoc); 6224 void CodeCompleteObjCPropertyDefinition(Scope *S); 6225 void CodeCompleteObjCPropertySynthesizeIvar(Scope *S, 6226 IdentifierInfo *PropertyName); 6227 void CodeCompleteObjCMethodDecl(Scope *S, 6228 bool IsInstanceMethod, 6229 ParsedType ReturnType); 6230 void CodeCompleteObjCMethodDeclSelector(Scope *S, 6231 bool IsInstanceMethod, 6232 bool AtParameterName, 6233 ParsedType ReturnType, 6234 IdentifierInfo **SelIdents, 6235 unsigned NumSelIdents); 6236 void CodeCompletePreprocessorDirective(bool InConditional); 6237 void CodeCompleteInPreprocessorConditionalExclusion(Scope *S); 6238 void CodeCompletePreprocessorMacroName(bool IsDefinition); 6239 void CodeCompletePreprocessorExpression(); 6240 void CodeCompletePreprocessorMacroArgument(Scope *S, 6241 IdentifierInfo *Macro, 6242 MacroInfo *MacroInfo, 6243 unsigned Argument); 6244 void CodeCompleteNaturalLanguage(); 6245 void GatherGlobalCodeCompletions(CodeCompletionAllocator &Allocator, 6246 SmallVectorImpl<CodeCompletionResult> &Results); 6247 //@} 6248 6249 //===--------------------------------------------------------------------===// 6250 // Extra semantic analysis beyond the C type system 6251 6252public: 6253 SourceLocation getLocationOfStringLiteralByte(const StringLiteral *SL, 6254 unsigned ByteNo) const; 6255 6256private: 6257 void CheckArrayAccess(const Expr *BaseExpr, const Expr *IndexExpr, 6258 const ArraySubscriptExpr *ASE=0, 6259 bool AllowOnePastEnd=true, bool IndexNegated=false); 6260 void CheckArrayAccess(const Expr *E); 6261 bool CheckFunctionCall(FunctionDecl *FDecl, CallExpr *TheCall); 6262 bool CheckObjCMethodCall(ObjCMethodDecl *Method, SourceLocation loc, 6263 Expr **Args, unsigned NumArgs); 6264 bool CheckBlockCall(NamedDecl *NDecl, CallExpr *TheCall); 6265 6266 bool CheckablePrintfAttr(const FormatAttr *Format, Expr **Args, 6267 unsigned NumArgs, bool IsCXXMemberCall); 6268 bool CheckObjCString(Expr *Arg); 6269 6270 ExprResult CheckBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); 6271 bool CheckARMBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); 6272 6273 bool SemaBuiltinVAStart(CallExpr *TheCall); 6274 bool SemaBuiltinUnorderedCompare(CallExpr *TheCall); 6275 bool SemaBuiltinFPClassification(CallExpr *TheCall, unsigned NumArgs); 6276 6277public: 6278 // Used by C++ template instantiation. 6279 ExprResult SemaBuiltinShuffleVector(CallExpr *TheCall); 6280 6281private: 6282 bool SemaBuiltinPrefetch(CallExpr *TheCall); 6283 bool SemaBuiltinObjectSize(CallExpr *TheCall); 6284 bool SemaBuiltinLongjmp(CallExpr *TheCall); 6285 ExprResult SemaBuiltinAtomicOverloaded(ExprResult TheCallResult); 6286 ExprResult SemaAtomicOpsOverloaded(ExprResult TheCallResult, 6287 AtomicExpr::AtomicOp Op); 6288 bool SemaBuiltinConstantArg(CallExpr *TheCall, int ArgNum, 6289 llvm::APSInt &Result); 6290 6291 bool SemaCheckStringLiteral(const Expr *E, Expr **Args, unsigned NumArgs, 6292 bool HasVAListArg, unsigned format_idx, 6293 unsigned firstDataArg, bool isPrintf, 6294 bool inFunctionCall = true); 6295 6296 void CheckFormatString(const StringLiteral *FExpr, const Expr *OrigFormatExpr, 6297 Expr **Args, unsigned NumArgs, bool HasVAListArg, 6298 unsigned format_idx, unsigned firstDataArg, 6299 bool isPrintf, bool inFunctionCall); 6300 6301 void CheckNonNullArguments(const NonNullAttr *NonNull, 6302 const Expr * const *ExprArgs, 6303 SourceLocation CallSiteLoc); 6304 6305 void CheckFormatArguments(const FormatAttr *Format, CallExpr *TheCall); 6306 void CheckFormatArguments(const FormatAttr *Format, Expr **Args, 6307 unsigned NumArgs, bool IsCXXMember, 6308 SourceLocation Loc, SourceRange Range); 6309 void CheckPrintfScanfArguments(Expr **Args, unsigned NumArgs, 6310 bool HasVAListArg, unsigned format_idx, 6311 unsigned firstDataArg, bool isPrintf, 6312 SourceLocation Loc, SourceRange range); 6313 6314 void CheckMemaccessArguments(const CallExpr *Call, 6315 unsigned BId, 6316 IdentifierInfo *FnName); 6317 6318 void CheckStrlcpycatArguments(const CallExpr *Call, 6319 IdentifierInfo *FnName); 6320 6321 void CheckReturnStackAddr(Expr *RetValExp, QualType lhsType, 6322 SourceLocation ReturnLoc); 6323 void CheckFloatComparison(SourceLocation Loc, Expr* LHS, Expr* RHS); 6324 void CheckImplicitConversions(Expr *E, SourceLocation CC = SourceLocation()); 6325 6326 void CheckBitFieldInitialization(SourceLocation InitLoc, FieldDecl *Field, 6327 Expr *Init); 6328 6329 /// \brief The parser's current scope. 6330 /// 6331 /// The parser maintains this state here. 6332 Scope *CurScope; 6333 6334protected: 6335 friend class Parser; 6336 friend class InitializationSequence; 6337 friend class ASTReader; 6338 friend class ASTWriter; 6339 6340public: 6341 /// \brief Retrieve the parser's current scope. 6342 /// 6343 /// This routine must only be used when it is certain that semantic analysis 6344 /// and the parser are in precisely the same context, which is not the case 6345 /// when, e.g., we are performing any kind of template instantiation. 6346 /// Therefore, the only safe places to use this scope are in the parser 6347 /// itself and in routines directly invoked from the parser and *never* from 6348 /// template substitution or instantiation. 6349 Scope *getCurScope() const { return CurScope; } 6350 6351 Decl *getObjCDeclContext() const; 6352 6353 DeclContext *getCurLexicalContext() const { 6354 return OriginalLexicalContext ? OriginalLexicalContext : CurContext; 6355 } 6356 6357 AvailabilityResult getCurContextAvailability() const; 6358}; 6359 6360/// \brief RAII object that enters a new expression evaluation context. 6361class EnterExpressionEvaluationContext { 6362 Sema &Actions; 6363 6364public: 6365 EnterExpressionEvaluationContext(Sema &Actions, 6366 Sema::ExpressionEvaluationContext NewContext) 6367 : Actions(Actions) { 6368 Actions.PushExpressionEvaluationContext(NewContext); 6369 } 6370 6371 ~EnterExpressionEvaluationContext() { 6372 Actions.PopExpressionEvaluationContext(); 6373 } 6374}; 6375 6376} // end namespace clang 6377 6378#endif 6379