Sema.h revision a126f17ca83b985300c1f65cee647bea108db657
1e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng//===--- Sema.h - Semantic Analysis & AST Building --------------*- C++ -*-===// 2e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng// 3e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng// The LLVM Compiler Infrastructure 4e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng// 5e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng// This file is distributed under the University of Illinois Open Source 6e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng// License. See LICENSE.TXT for details. 7e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng// 8e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng//===----------------------------------------------------------------------===// 9e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng// 10e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng// This file defines the Sema class, which performs semantic analysis and 11e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng// builds ASTs. 12e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng// 13e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng//===----------------------------------------------------------------------===// 14e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 15e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#ifndef LLVM_CLANG_SEMA_SEMA_H 16e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#define LLVM_CLANG_SEMA_SEMA_H 17e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 18e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/Sema/Ownership.h" 19e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/Sema/AnalysisBasedWarnings.h" 20e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/Sema/IdentifierResolver.h" 21e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/Sema/ObjCMethodList.h" 22e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/Sema/DeclSpec.h" 23e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/Sema/ExternalSemaSource.h" 24e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/Sema/LocInfoType.h" 25e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/Sema/TypoCorrection.h" 26e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/AST/Expr.h" 27e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/AST/DeclarationName.h" 28e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/AST/ExternalASTSource.h" 29e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/AST/TypeLoc.h" 30e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/Basic/Specifiers.h" 31e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/Basic/TemplateKinds.h" 32e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/Basic/TypeTraits.h" 33e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "clang/Basic/ExpressionTraits.h" 34e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "llvm/ADT/OwningPtr.h" 35e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "llvm/ADT/SmallPtrSet.h" 36e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include "llvm/ADT/SmallVector.h" 37e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include <deque> 38e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng#include <string> 39e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 40e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengnamespace llvm { 41e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class APSInt; 42e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng template <typename ValueT> struct DenseMapInfo; 43e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng template <typename ValueT, typename ValueInfoT> class DenseSet; 44e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 45e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 46e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengnamespace clang { 47e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ADLResult; 48e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ASTConsumer; 49e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ASTContext; 50e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ASTMutationListener; 51e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ASTReader; 52e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ASTWriter; 53e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ArrayType; 54e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class AttributeList; 55e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class BlockDecl; 56e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CXXBasePath; 57e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CXXBasePaths; 58e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef SmallVector<CXXBaseSpecifier*, 4> CXXCastPath; 59e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CXXConstructorDecl; 60e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CXXConversionDecl; 61e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CXXDestructorDecl; 62e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CXXFieldCollector; 63e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CXXMemberCallExpr; 64e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CXXMethodDecl; 65e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CXXScopeSpec; 66e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CXXTemporary; 67e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CXXTryStmt; 68e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CallExpr; 69e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ClassTemplateDecl; 70e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ClassTemplatePartialSpecializationDecl; 71e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ClassTemplateSpecializationDecl; 72e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CodeCompleteConsumer; 73e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CodeCompletionAllocator; 74e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class CodeCompletionResult; 75e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class Decl; 76e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class DeclAccessPair; 77e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class DeclContext; 78e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class DeclRefExpr; 79e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class DeclaratorDecl; 80e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class DeducedTemplateArgument; 81e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class DependentDiagnostic; 82e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class DesignatedInitExpr; 83e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class Designation; 84e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class EnumConstantDecl; 85e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class Expr; 86e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ExtVectorType; 87e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ExternalSemaSource; 88e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class FormatAttr; 89e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class FriendDecl; 90e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class FunctionDecl; 91e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class FunctionProtoType; 92e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class FunctionTemplateDecl; 93e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ImplicitConversionSequence; 94e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class InitListExpr; 95e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class InitializationKind; 96e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class InitializationSequence; 97e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class InitializedEntity; 98e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class IntegerLiteral; 99e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class LabelStmt; 100e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class LangOptions; 101e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class LocalInstantiationScope; 102e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class LookupResult; 103e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class MacroInfo; 104e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class MultiLevelTemplateArgumentList; 105e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class NamedDecl; 106e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class NonNullAttr; 107e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ObjCCategoryDecl; 108e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ObjCCategoryImplDecl; 109e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ObjCCompatibleAliasDecl; 110e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ObjCContainerDecl; 111e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ObjCImplDecl; 112e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ObjCImplementationDecl; 113e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ObjCInterfaceDecl; 114e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ObjCIvarDecl; 115e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng template <class T> class ObjCList; 116e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ObjCMessageExpr; 117e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ObjCMethodDecl; 118e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ObjCPropertyDecl; 119e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ObjCProtocolDecl; 120e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class OverloadCandidateSet; 121e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class OverloadExpr; 122e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ParenListExpr; 123e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ParmVarDecl; 124e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class Preprocessor; 125e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class PseudoDestructorTypeStorage; 126e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class QualType; 127e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class StandardConversionSequence; 128e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class Stmt; 129e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class StringLiteral; 130e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class SwitchStmt; 131e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class TargetAttributesSema; 132e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class TemplateArgument; 133e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class TemplateArgumentList; 134e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class TemplateArgumentLoc; 135e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class TemplateDecl; 136e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class TemplateParameterList; 137e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class TemplatePartialOrderingContext; 138e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class TemplateTemplateParmDecl; 139e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class Token; 140e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class TypeAliasDecl; 141e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class TypedefDecl; 142e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class TypedefNameDecl; 143e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class TypeLoc; 144e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class UnqualifiedId; 145e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class UnresolvedLookupExpr; 146e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class UnresolvedMemberExpr; 147e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class UnresolvedSetImpl; 148e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class UnresolvedSetIterator; 149e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class UsingDecl; 150e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class UsingShadowDecl; 151e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ValueDecl; 152e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class VarDecl; 153e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class VisibilityAttr; 154e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class VisibleDeclConsumer; 155e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class IndirectFieldDecl; 156e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 157e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengnamespace sema { 158e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class AccessedEntity; 159e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class BlockScopeInfo; 160e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class DelayedDiagnostic; 161e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class FunctionScopeInfo; 162e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class TemplateDeductionInfo; 163e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng} 164e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 165e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng// FIXME: No way to easily map from TemplateTypeParmTypes to 166e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng// TemplateTypeParmDecls, so we have this horrible PointerUnion. 167e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengtypedef std::pair<llvm::PointerUnion<const TemplateTypeParmType*, NamedDecl*>, 168e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng SourceLocation> UnexpandedParameterPack; 169e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 170e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng/// Sema - This implements semantic analysis and AST building for C. 171e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengclass Sema { 172e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng Sema(const Sema&); // DO NOT IMPLEMENT 173e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng void operator=(const Sema&); // DO NOT IMPLEMENT 174e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng mutable const TargetAttributesSema* TheTargetAttributesSema; 175e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Chengpublic: 176e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef OpaquePtr<DeclGroupRef> DeclGroupPtrTy; 177e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef OpaquePtr<TemplateName> TemplateTy; 178e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef OpaquePtr<QualType> TypeTy; 179e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef Attr AttrTy; 180e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef CXXBaseSpecifier BaseTy; 181e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef CXXCtorInitializer MemInitTy; 182e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef Expr ExprTy; 183e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef Stmt StmtTy; 184e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef TemplateParameterList TemplateParamsTy; 185e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef NestedNameSpecifier CXXScopeTy; 186e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 187e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng OpenCLOptions OpenCLFeatures; 188e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng FPOptions FPFeatures; 189e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 190e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng const LangOptions &LangOpts; 191e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng Preprocessor &PP; 192e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ASTContext &Context; 193e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ASTConsumer &Consumer; 194e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng Diagnostic &Diags; 195e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng SourceManager &SourceMgr; 196e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 197e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief Flag indicating whether or not to collect detailed statistics. 198e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng bool CollectStats; 199e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 200e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief Source of additional semantic information. 201e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ExternalSemaSource *ExternalSource; 202e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 203e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief Code-completion consumer. 204e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng CodeCompleteConsumer *CodeCompleter; 205e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 206e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// CurContext - This is the current declaration context of parsing. 207e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng DeclContext *CurContext; 208e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 209e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// VAListTagName - The declaration name corresponding to __va_list_tag. 210e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// This is used as part of a hack to omit that class from ADL results. 211e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng DeclarationName VAListTagName; 212e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 213e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// PackContext - Manages the stack for #pragma pack. An alignment 214e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// of 0 indicates default alignment. 215e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng void *PackContext; // Really a "PragmaPackStack*" 216e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 217e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng bool MSStructPragmaOn; // True when #pragma ms_struct on 218e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 219e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// VisContext - Manages the stack for #pragma GCC visibility. 220e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng void *VisContext; // Really a "PragmaVisStack*" 221e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 222e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// ExprNeedsCleanups - True if the current evaluation context 223e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// requires cleanups to be run at its conclusion. 224e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng bool ExprNeedsCleanups; 225e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 226e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief Stack containing information about each of the nested 227e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// function, block, and method scopes that are currently active. 228e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// 229e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// This array is never empty. Clients should ignore the first 230e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// element, which is used to cache a single FunctionScopeInfo 231e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// that's used to parse every top-level function. 232e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng SmallVector<sema::FunctionScopeInfo *, 4> FunctionScopes; 233e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 234e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// ExprTemporaries - This is the stack of temporaries that are created by 235e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// the current full expression. 236e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng SmallVector<CXXTemporary*, 8> ExprTemporaries; 237e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 238e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef LazyVector<TypedefNameDecl *, ExternalSemaSource, 239e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng &ExternalSemaSource::ReadExtVectorDecls, 2, 2> 240e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ExtVectorDeclsType; 241e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 242e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// ExtVectorDecls - This is a list all the extended vector types. This allows 243e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// us to associate a raw vector type with one of the ext_vector type names. 244e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// This is only necessary for issuing pretty diagnostics. 245e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ExtVectorDeclsType ExtVectorDecls; 246e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 247e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// FieldCollector - Collects CXXFieldDecls during parsing of C++ classes. 248e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng llvm::OwningPtr<CXXFieldCollector> FieldCollector; 249e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 250e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef llvm::SmallPtrSet<const CXXRecordDecl*, 8> RecordDeclSetTy; 251e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 252e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// PureVirtualClassDiagSet - a set of class declarations which we have 253e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// emitted a list of pure virtual functions. Used to prevent emitting the 254e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// same list more than once. 255e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng llvm::OwningPtr<RecordDeclSetTy> PureVirtualClassDiagSet; 256e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 257e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// ParsingInitForAutoVars - a set of declarations with auto types for which 258e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// we are currently parsing the initializer. 259e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng llvm::SmallPtrSet<const Decl*, 4> ParsingInitForAutoVars; 260e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 261e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief A mapping from external names to the most recent 262e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// locally-scoped external declaration with that name. 263e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// 264e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// This map contains external declarations introduced in local 265e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// scoped, e.g., 266e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// 267e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \code 268e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// void f() { 269e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// void foo(int, int); 270e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// } 271e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \endcode 272e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// 273e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// Here, the name "foo" will be associated with the declaration on 274e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// "foo" within f. This name is not visible outside of 275e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// "f". However, we still find it in two cases: 276e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// 277e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// - If we are declaring another external with the name "foo", we 278e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// can find "foo" as a previous declaration, so that the types 279e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// of this external declaration can be checked for 280e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// compatibility. 281e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// 282e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// - If we would implicitly declare "foo" (e.g., due to a call to 283e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// "foo" in C when no prototype or definition is visible), then 284e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// we find this declaration of "foo" and complain that it is 285e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// not visible. 286e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng llvm::DenseMap<DeclarationName, NamedDecl *> LocallyScopedExternalDecls; 287e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 288e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef LazyVector<VarDecl *, ExternalSemaSource, 289e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng &ExternalSemaSource::ReadTentativeDefinitions, 2, 2> 290e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng TentativeDefinitionsType; 291e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 292e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief All the tentative definitions encountered in the TU. 293e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng TentativeDefinitionsType TentativeDefinitions; 294e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 295e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef LazyVector<const DeclaratorDecl *, ExternalSemaSource, 296e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng &ExternalSemaSource::ReadUnusedFileScopedDecls, 2, 2> 297e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng UnusedFileScopedDeclsType; 298e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 299e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief The set of file scoped decls seen so far that have not been used 300e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// and must warn if not used. Only contains the first declaration. 301e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng UnusedFileScopedDeclsType UnusedFileScopedDecls; 302e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 303e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef LazyVector<CXXConstructorDecl *, ExternalSemaSource, 304e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng &ExternalSemaSource::ReadDelegatingConstructors, 2, 2> 305e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng DelegatingCtorDeclsType; 306e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 307e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief All the delegating constructors seen so far in the file, used for 308e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// cycle detection at the end of the TU. 309e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng DelegatingCtorDeclsType DelegatingCtorDecls; 310e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 311e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief All the overriding destructors seen during a class definition 312e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// (there could be multiple due to nested classes) that had their exception 313e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// spec checks delayed, plus the overridden destructor. 314e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng SmallVector<std::pair<const CXXDestructorDecl*, 315e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng const CXXDestructorDecl*>, 2> 316e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng DelayedDestructorExceptionSpecChecks; 317e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 318e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief Callback to the parser to parse templated functions when needed. 319e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng typedef void LateTemplateParserCB(void *P, const FunctionDecl *FD); 320e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng LateTemplateParserCB *LateTemplateParser; 321e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng void *OpaqueParser; 322e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 323e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng void SetLateTemplateParser(LateTemplateParserCB *LTP, void *P) { 324e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng LateTemplateParser = LTP; 325e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng OpaqueParser = P; 326e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } 327e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 328e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class DelayedDiagnostics; 329e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 330e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ParsingDeclState { 331e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng unsigned SavedStackSize; 332e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng friend class Sema::DelayedDiagnostics; 333e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng }; 334e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 335e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ProcessingContextState { 336e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng unsigned SavedParsingDepth; 337e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng unsigned SavedActiveStackBase; 338e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng friend class Sema::DelayedDiagnostics; 339e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng }; 340e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 341e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// A class which encapsulates the logic for delaying diagnostics 342e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// during parsing and other processing. 343e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class DelayedDiagnostics { 344e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief The stack of diagnostics that were delayed due to being 345e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// produced during the parsing of a declaration. 346e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng sema::DelayedDiagnostic *Stack; 347e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 348e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief The number of objects on the delayed-diagnostics stack. 349e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng unsigned StackSize; 350e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 351e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief The current capacity of the delayed-diagnostics stack. 352e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng unsigned StackCapacity; 353e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 354e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief The index of the first "active" delayed diagnostic in 355e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// the stack. When parsing class definitions, we ignore active 356e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// delayed diagnostics from the surrounding context. 357e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng unsigned ActiveStackBase; 358e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 359e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief The depth of the declarations we're currently parsing. 360e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// This gets saved and reset whenever we enter a class definition. 361e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng unsigned ParsingDepth; 362e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 363e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng public: 364e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng DelayedDiagnostics() : Stack(0), StackSize(0), StackCapacity(0), 365e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ActiveStackBase(0), ParsingDepth(0) {} 366e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 367e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ~DelayedDiagnostics() { 368e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng delete[] reinterpret_cast<char*>(Stack); 369e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } 370e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 371e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// Adds a delayed diagnostic. 372e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng void add(const sema::DelayedDiagnostic &diag); 373e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 374e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// Determines whether diagnostics should be delayed. 375e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng bool shouldDelayDiagnostics() { return ParsingDepth > 0; } 376e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 377e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// Observe that we've started parsing a declaration. Access and 378e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// deprecation diagnostics will be delayed; when the declaration 379e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// is completed, all active delayed diagnostics will be evaluated 380e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// in its context, and then active diagnostics stack will be 381e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// popped down to the saved depth. 382e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ParsingDeclState pushParsingDecl() { 383e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ParsingDepth++; 384e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 385e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ParsingDeclState state; 386e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng state.SavedStackSize = StackSize; 387e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng return state; 388e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } 389e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 390e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// Observe that we're completed parsing a declaration. 391e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng static void popParsingDecl(Sema &S, ParsingDeclState state, Decl *decl); 392e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 393e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// Observe that we've started processing a different context, the 394e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// contents of which are semantically separate from the 395e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// declarations it may lexically appear in. This sets aside the 396e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// current stack of active diagnostics and starts afresh. 397e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ProcessingContextState pushContext() { 398e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng assert(StackSize >= ActiveStackBase); 399e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 400e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ProcessingContextState state; 401e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng state.SavedParsingDepth = ParsingDepth; 402e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng state.SavedActiveStackBase = ActiveStackBase; 403e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 404e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ActiveStackBase = StackSize; 405e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ParsingDepth = 0; 406e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 407e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng return state; 408e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } 409e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 410e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// Observe that we've stopped processing a context. This 411e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// restores the previous stack of active diagnostics. 412e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng void popContext(ProcessingContextState state) { 413e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng assert(ActiveStackBase == StackSize); 414e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng assert(ParsingDepth == 0); 415e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ActiveStackBase = state.SavedActiveStackBase; 416e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ParsingDepth = state.SavedParsingDepth; 417e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } 418e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } DelayedDiagnostics; 419e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 420e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// A RAII object to temporarily push a declaration context. 421e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class ContextRAII { 422e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng private: 423e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng Sema &S; 424e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng DeclContext *SavedContext; 425e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ProcessingContextState SavedContextState; 426e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 427e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng public: 428e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ContextRAII(Sema &S, DeclContext *ContextToPush) 429e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng : S(S), SavedContext(S.CurContext), 430e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng SavedContextState(S.DelayedDiagnostics.pushContext()) 431e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng { 432e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng assert(ContextToPush && "pushing null context"); 433e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng S.CurContext = ContextToPush; 434e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } 435e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 436e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng void pop() { 437e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng if (!SavedContext) return; 438e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng S.CurContext = SavedContext; 439e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng S.DelayedDiagnostics.popContext(SavedContextState); 440e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng SavedContext = 0; 441e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } 442e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 443e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng ~ContextRAII() { 444e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng pop(); 445e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } 446e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng }; 447e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 448e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// WeakUndeclaredIdentifiers - Identifiers contained in 449e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// #pragma weak before declared. rare. may alias another 450e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// identifier, declared or undeclared 451e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng class WeakInfo { 452e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng IdentifierInfo *alias; // alias (optional) 453e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng SourceLocation loc; // for diagnostics 454e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng bool used; // identifier later declared? 455e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng public: 456e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WeakInfo() 457e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng : alias(0), loc(SourceLocation()), used(false) {} 458e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng WeakInfo(IdentifierInfo *Alias, SourceLocation Loc) 459e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng : alias(Alias), loc(Loc), used(false) {} 460e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng inline IdentifierInfo * getAlias() const { return alias; } 461e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng inline SourceLocation getLocation() const { return loc; } 462e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng void setUsed(bool Used=true) { used = Used; } 463e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng inline bool getUsed() { return used; } 464e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng bool operator==(WeakInfo RHS) const { 465e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng return alias == RHS.getAlias() && loc == RHS.getLocation(); 466e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng } 467e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng bool operator!=(WeakInfo RHS) const { return !(*this == RHS); } 468e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng }; 469e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng llvm::DenseMap<IdentifierInfo*,WeakInfo> WeakUndeclaredIdentifiers; 470e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 471e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// WeakTopLevelDecl - Translation-unit scoped declarations generated by 472e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// #pragma weak during processing of other Decls. 473e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// I couldn't figure out a clean way to generate these in-line, so 474e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// we store them here and handle separately -- which is a hack. 475e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// It would be best to refactor this. 476e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng SmallVector<Decl*,2> WeakTopLevelDecl; 477e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 478e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng IdentifierResolver IdResolver; 479e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 480e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// Translation Unit Scope - useful to Objective-C actions that need 481e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// to lookup file scope declarations in the "ordinary" C decl namespace. 482e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// For example, user-defined classes, built-in "id" type, etc. 483e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng Scope *TUScope; 484e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 485e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief The C++ "std" namespace, where the standard library resides. 486e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng LazyDeclPtr StdNamespace; 487e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 488e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief The C++ "std::bad_alloc" class, which is defined by the C++ 489e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// standard library. 490e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng LazyDeclPtr StdBadAlloc; 491e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 492e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief The C++ "type_info" declaration, which is defined in <typeinfo>. 493e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng RecordDecl *CXXTypeInfoDecl; 494e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 495e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng /// \brief The MSVC "_GUID" struct, which is defined in MSVC header files. 496e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng RecordDecl *MSVCGuidDecl; 497e6e8a0bd7cffcc9ae2e0e75546fb12a19213d4aeBen Cheng 498 /// A flag to remember whether the implicit forms of operator new and delete 499 /// have been declared. 500 bool GlobalNewDeleteDeclared; 501 502 /// \brief The set of declarations that have been referenced within 503 /// a potentially evaluated expression. 504 typedef SmallVector<std::pair<SourceLocation, Decl *>, 10> 505 PotentiallyReferencedDecls; 506 507 /// \brief A set of diagnostics that may be emitted. 508 typedef SmallVector<std::pair<SourceLocation, PartialDiagnostic>, 10> 509 PotentiallyEmittedDiagnostics; 510 511 /// \brief Describes how the expressions currently being parsed are 512 /// evaluated at run-time, if at all. 513 enum ExpressionEvaluationContext { 514 /// \brief The current expression and its subexpressions occur within an 515 /// unevaluated operand (C++0x [expr]p8), such as a constant expression 516 /// or the subexpression of \c sizeof, where the type or the value of the 517 /// expression may be significant but no code will be generated to evaluate 518 /// the value of the expression at run time. 519 Unevaluated, 520 521 /// \brief The current expression is potentially evaluated at run time, 522 /// which means that code may be generated to evaluate the value of the 523 /// expression at run time. 524 PotentiallyEvaluated, 525 526 /// \brief The current expression may be potentially evaluated or it may 527 /// be unevaluated, but it is impossible to tell from the lexical context. 528 /// This evaluation context is used primary for the operand of the C++ 529 /// \c typeid expression, whose argument is potentially evaluated only when 530 /// it is an lvalue of polymorphic class type (C++ [basic.def.odr]p2). 531 PotentiallyPotentiallyEvaluated, 532 533 /// \brief The current expression is potentially evaluated, but any 534 /// declarations referenced inside that expression are only used if 535 /// in fact the current expression is used. 536 /// 537 /// This value is used when parsing default function arguments, for which 538 /// we would like to provide diagnostics (e.g., passing non-POD arguments 539 /// through varargs) but do not want to mark declarations as "referenced" 540 /// until the default argument is used. 541 PotentiallyEvaluatedIfUsed 542 }; 543 544 /// \brief Data structure used to record current or nested 545 /// expression evaluation contexts. 546 struct ExpressionEvaluationContextRecord { 547 /// \brief The expression evaluation context. 548 ExpressionEvaluationContext Context; 549 550 /// \brief Whether the enclosing context needed a cleanup. 551 bool ParentNeedsCleanups; 552 553 /// \brief The number of temporaries that were active when we 554 /// entered this expression evaluation context. 555 unsigned NumTemporaries; 556 557 /// \brief The set of declarations referenced within a 558 /// potentially potentially-evaluated context. 559 /// 560 /// When leaving a potentially potentially-evaluated context, each 561 /// of these elements will be as referenced if the corresponding 562 /// potentially potentially evaluated expression is potentially 563 /// evaluated. 564 PotentiallyReferencedDecls *PotentiallyReferenced; 565 566 /// \brief The set of diagnostics to emit should this potentially 567 /// potentially-evaluated context become evaluated. 568 PotentiallyEmittedDiagnostics *PotentiallyDiagnosed; 569 570 ExpressionEvaluationContextRecord(ExpressionEvaluationContext Context, 571 unsigned NumTemporaries, 572 bool ParentNeedsCleanups) 573 : Context(Context), ParentNeedsCleanups(ParentNeedsCleanups), 574 NumTemporaries(NumTemporaries), 575 PotentiallyReferenced(0), PotentiallyDiagnosed(0) { } 576 577 void addReferencedDecl(SourceLocation Loc, Decl *Decl) { 578 if (!PotentiallyReferenced) 579 PotentiallyReferenced = new PotentiallyReferencedDecls; 580 PotentiallyReferenced->push_back(std::make_pair(Loc, Decl)); 581 } 582 583 void addDiagnostic(SourceLocation Loc, const PartialDiagnostic &PD) { 584 if (!PotentiallyDiagnosed) 585 PotentiallyDiagnosed = new PotentiallyEmittedDiagnostics; 586 PotentiallyDiagnosed->push_back(std::make_pair(Loc, PD)); 587 } 588 589 void Destroy() { 590 delete PotentiallyReferenced; 591 delete PotentiallyDiagnosed; 592 PotentiallyReferenced = 0; 593 PotentiallyDiagnosed = 0; 594 } 595 }; 596 597 /// A stack of expression evaluation contexts. 598 SmallVector<ExpressionEvaluationContextRecord, 8> ExprEvalContexts; 599 600 /// SpecialMemberOverloadResult - The overloading result for a special member 601 /// function. 602 /// 603 /// This is basically a wrapper around PointerIntPair. The lowest bit of the 604 /// integer is used to determine whether we have a parameter qualification 605 /// match, the second-lowest is whether we had success in resolving the 606 /// overload to a unique non-deleted function. 607 /// 608 /// The ConstParamMatch bit represents whether, when looking up a copy 609 /// constructor or assignment operator, we found a potential copy 610 /// constructor/assignment operator whose first parameter is const-qualified. 611 /// This is used for determining parameter types of other objects and is 612 /// utterly meaningless on other types of special members. 613 class SpecialMemberOverloadResult : public llvm::FastFoldingSetNode { 614 llvm::PointerIntPair<CXXMethodDecl*, 2> Pair; 615 public: 616 SpecialMemberOverloadResult(const llvm::FoldingSetNodeID &ID) 617 : FastFoldingSetNode(ID) 618 {} 619 620 CXXMethodDecl *getMethod() const { return Pair.getPointer(); } 621 void setMethod(CXXMethodDecl *MD) { Pair.setPointer(MD); } 622 623 bool hasSuccess() const { return Pair.getInt() & 0x1; } 624 void setSuccess(bool B) { 625 Pair.setInt(unsigned(B) | hasConstParamMatch() << 1); 626 } 627 628 bool hasConstParamMatch() const { return Pair.getInt() & 0x2; } 629 void setConstParamMatch(bool B) { 630 Pair.setInt(B << 1 | unsigned(hasSuccess())); 631 } 632 }; 633 634 /// \brief A cache of special member function overload resolution results 635 /// for C++ records. 636 llvm::FoldingSet<SpecialMemberOverloadResult> SpecialMemberCache; 637 638 /// \brief Whether the code handled by Sema should be considered a 639 /// complete translation unit or not. 640 /// 641 /// When true (which is generally the case), Sema will perform 642 /// end-of-translation-unit semantic tasks (such as creating 643 /// initializers for tentative definitions in C) once parsing has 644 /// completed. This flag will be false when building PCH files, 645 /// since a PCH file is by definition not a complete translation 646 /// unit. 647 bool CompleteTranslationUnit; 648 649 llvm::BumpPtrAllocator BumpAlloc; 650 651 /// \brief The number of SFINAE diagnostics that have been trapped. 652 unsigned NumSFINAEErrors; 653 654 typedef llvm::DenseMap<ParmVarDecl *, SmallVector<ParmVarDecl *, 1> > 655 UnparsedDefaultArgInstantiationsMap; 656 657 /// \brief A mapping from parameters with unparsed default arguments to the 658 /// set of instantiations of each parameter. 659 /// 660 /// This mapping is a temporary data structure used when parsing 661 /// nested class templates or nested classes of class templates, 662 /// where we might end up instantiating an inner class before the 663 /// default arguments of its methods have been parsed. 664 UnparsedDefaultArgInstantiationsMap UnparsedDefaultArgInstantiations; 665 666 // Contains the locations of the beginning of unparsed default 667 // argument locations. 668 llvm::DenseMap<ParmVarDecl *,SourceLocation> UnparsedDefaultArgLocs; 669 670 /// UndefinedInternals - all the used, undefined objects with 671 /// internal linkage in this translation unit. 672 llvm::DenseMap<NamedDecl*, SourceLocation> UndefinedInternals; 673 674 typedef std::pair<ObjCMethodList, ObjCMethodList> GlobalMethods; 675 typedef llvm::DenseMap<Selector, GlobalMethods> GlobalMethodPool; 676 677 /// Method Pool - allows efficient lookup when typechecking messages to "id". 678 /// We need to maintain a list, since selectors can have differing signatures 679 /// across classes. In Cocoa, this happens to be extremely uncommon (only 1% 680 /// of selectors are "overloaded"). 681 GlobalMethodPool MethodPool; 682 683 /// Method selectors used in a @selector expression. Used for implementation 684 /// of -Wselector. 685 llvm::DenseMap<Selector, SourceLocation> ReferencedSelectors; 686 687 GlobalMethodPool::iterator ReadMethodPool(Selector Sel); 688 689 /// Private Helper predicate to check for 'self'. 690 bool isSelfExpr(Expr *RExpr); 691public: 692 Sema(Preprocessor &pp, ASTContext &ctxt, ASTConsumer &consumer, 693 bool CompleteTranslationUnit = true, 694 CodeCompleteConsumer *CompletionConsumer = 0); 695 ~Sema(); 696 697 /// \brief Perform initialization that occurs after the parser has been 698 /// initialized but before it parses anything. 699 void Initialize(); 700 701 const LangOptions &getLangOptions() const { return LangOpts; } 702 OpenCLOptions &getOpenCLOptions() { return OpenCLFeatures; } 703 FPOptions &getFPOptions() { return FPFeatures; } 704 705 Diagnostic &getDiagnostics() const { return Diags; } 706 SourceManager &getSourceManager() const { return SourceMgr; } 707 const TargetAttributesSema &getTargetAttributesSema() const; 708 Preprocessor &getPreprocessor() const { return PP; } 709 ASTContext &getASTContext() const { return Context; } 710 ASTConsumer &getASTConsumer() const { return Consumer; } 711 ASTMutationListener *getASTMutationListener() const; 712 713 void PrintStats() const; 714 715 /// \brief Helper class that creates diagnostics with optional 716 /// template instantiation stacks. 717 /// 718 /// This class provides a wrapper around the basic DiagnosticBuilder 719 /// class that emits diagnostics. SemaDiagnosticBuilder is 720 /// responsible for emitting the diagnostic (as DiagnosticBuilder 721 /// does) and, if the diagnostic comes from inside a template 722 /// instantiation, printing the template instantiation stack as 723 /// well. 724 class SemaDiagnosticBuilder : public DiagnosticBuilder { 725 Sema &SemaRef; 726 unsigned DiagID; 727 728 public: 729 SemaDiagnosticBuilder(DiagnosticBuilder &DB, Sema &SemaRef, unsigned DiagID) 730 : DiagnosticBuilder(DB), SemaRef(SemaRef), DiagID(DiagID) { } 731 732 explicit SemaDiagnosticBuilder(Sema &SemaRef) 733 : DiagnosticBuilder(DiagnosticBuilder::Suppress), SemaRef(SemaRef) { } 734 735 ~SemaDiagnosticBuilder(); 736 }; 737 738 /// \brief Emit a diagnostic. 739 SemaDiagnosticBuilder Diag(SourceLocation Loc, unsigned DiagID); 740 741 /// \brief Emit a partial diagnostic. 742 SemaDiagnosticBuilder Diag(SourceLocation Loc, const PartialDiagnostic& PD); 743 744 /// \brief Build a partial diagnostic. 745 PartialDiagnostic PDiag(unsigned DiagID = 0); // in SemaInternal.h 746 747 bool findMacroSpelling(SourceLocation &loc, StringRef name); 748 749 ExprResult Owned(Expr* E) { return E; } 750 ExprResult Owned(ExprResult R) { return R; } 751 StmtResult Owned(Stmt* S) { return S; } 752 753 void ActOnEndOfTranslationUnit(); 754 755 void CheckDelegatingCtorCycles(); 756 757 Scope *getScopeForContext(DeclContext *Ctx); 758 759 void PushFunctionScope(); 760 void PushBlockScope(Scope *BlockScope, BlockDecl *Block); 761 void PopFunctionOrBlockScope(const sema::AnalysisBasedWarnings::Policy *WP =0, 762 const Decl *D = 0, const BlockExpr *blkExpr = 0); 763 764 sema::FunctionScopeInfo *getCurFunction() const { 765 return FunctionScopes.back(); 766 } 767 768 bool hasAnyUnrecoverableErrorsInThisFunction() const; 769 770 /// \brief Retrieve the current block, if any. 771 sema::BlockScopeInfo *getCurBlock(); 772 773 /// WeakTopLevelDeclDecls - access to #pragma weak-generated Decls 774 SmallVector<Decl*,2> &WeakTopLevelDecls() { return WeakTopLevelDecl; } 775 776 //===--------------------------------------------------------------------===// 777 // Type Analysis / Processing: SemaType.cpp. 778 // 779 780 QualType BuildQualifiedType(QualType T, SourceLocation Loc, Qualifiers Qs); 781 QualType BuildQualifiedType(QualType T, SourceLocation Loc, unsigned CVR) { 782 return BuildQualifiedType(T, Loc, Qualifiers::fromCVRMask(CVR)); 783 } 784 QualType BuildPointerType(QualType T, 785 SourceLocation Loc, DeclarationName Entity); 786 QualType BuildReferenceType(QualType T, bool LValueRef, 787 SourceLocation Loc, DeclarationName Entity); 788 QualType BuildArrayType(QualType T, ArrayType::ArraySizeModifier ASM, 789 Expr *ArraySize, unsigned Quals, 790 SourceRange Brackets, DeclarationName Entity); 791 QualType BuildExtVectorType(QualType T, Expr *ArraySize, 792 SourceLocation AttrLoc); 793 QualType BuildFunctionType(QualType T, 794 QualType *ParamTypes, unsigned NumParamTypes, 795 bool Variadic, unsigned Quals, 796 RefQualifierKind RefQualifier, 797 SourceLocation Loc, DeclarationName Entity, 798 FunctionType::ExtInfo Info); 799 QualType BuildMemberPointerType(QualType T, QualType Class, 800 SourceLocation Loc, 801 DeclarationName Entity); 802 QualType BuildBlockPointerType(QualType T, 803 SourceLocation Loc, DeclarationName Entity); 804 QualType BuildParenType(QualType T); 805 806 TypeSourceInfo *GetTypeForDeclarator(Declarator &D, Scope *S); 807 TypeSourceInfo *GetTypeForDeclaratorCast(Declarator &D, QualType FromTy); 808 TypeSourceInfo *GetTypeSourceInfoForDeclarator(Declarator &D, QualType T, 809 TypeSourceInfo *ReturnTypeInfo); 810 /// \brief Package the given type and TSI into a ParsedType. 811 ParsedType CreateParsedType(QualType T, TypeSourceInfo *TInfo); 812 DeclarationNameInfo GetNameForDeclarator(Declarator &D); 813 DeclarationNameInfo GetNameFromUnqualifiedId(const UnqualifiedId &Name); 814 static QualType GetTypeFromParser(ParsedType Ty, TypeSourceInfo **TInfo = 0); 815 bool CheckSpecifiedExceptionType(QualType T, const SourceRange &Range); 816 bool CheckDistantExceptionSpec(QualType T); 817 bool CheckEquivalentExceptionSpec(FunctionDecl *Old, FunctionDecl *New); 818 bool CheckEquivalentExceptionSpec( 819 const FunctionProtoType *Old, SourceLocation OldLoc, 820 const FunctionProtoType *New, SourceLocation NewLoc); 821 bool CheckEquivalentExceptionSpec( 822 const PartialDiagnostic &DiagID, const PartialDiagnostic & NoteID, 823 const FunctionProtoType *Old, SourceLocation OldLoc, 824 const FunctionProtoType *New, SourceLocation NewLoc, 825 bool *MissingExceptionSpecification = 0, 826 bool *MissingEmptyExceptionSpecification = 0, 827 bool AllowNoexceptAllMatchWithNoSpec = false, 828 bool IsOperatorNew = false); 829 bool CheckExceptionSpecSubset( 830 const PartialDiagnostic &DiagID, const PartialDiagnostic & NoteID, 831 const FunctionProtoType *Superset, SourceLocation SuperLoc, 832 const FunctionProtoType *Subset, SourceLocation SubLoc); 833 bool CheckParamExceptionSpec(const PartialDiagnostic & NoteID, 834 const FunctionProtoType *Target, SourceLocation TargetLoc, 835 const FunctionProtoType *Source, SourceLocation SourceLoc); 836 837 TypeResult ActOnTypeName(Scope *S, Declarator &D); 838 839 bool RequireCompleteType(SourceLocation Loc, QualType T, 840 const PartialDiagnostic &PD, 841 std::pair<SourceLocation, PartialDiagnostic> Note); 842 bool RequireCompleteType(SourceLocation Loc, QualType T, 843 const PartialDiagnostic &PD); 844 bool RequireCompleteType(SourceLocation Loc, QualType T, 845 unsigned DiagID); 846 bool RequireCompleteExprType(Expr *E, const PartialDiagnostic &PD, 847 std::pair<SourceLocation, 848 PartialDiagnostic> Note); 849 850 851 QualType getElaboratedType(ElaboratedTypeKeyword Keyword, 852 const CXXScopeSpec &SS, QualType T); 853 854 QualType BuildTypeofExprType(Expr *E, SourceLocation Loc); 855 QualType BuildDecltypeType(Expr *E, SourceLocation Loc); 856 QualType BuildUnaryTransformType(QualType BaseType, 857 UnaryTransformType::UTTKind UKind, 858 SourceLocation Loc); 859 860 //===--------------------------------------------------------------------===// 861 // Symbol table / Decl tracking callbacks: SemaDecl.cpp. 862 // 863 864 DeclGroupPtrTy ConvertDeclToDeclGroup(Decl *Ptr, Decl *OwnedType = 0); 865 866 void DiagnoseUseOfUnimplementedSelectors(); 867 868 ParsedType getTypeName(IdentifierInfo &II, SourceLocation NameLoc, 869 Scope *S, CXXScopeSpec *SS = 0, 870 bool isClassName = false, 871 bool HasTrailingDot = false, 872 ParsedType ObjectType = ParsedType(), 873 bool WantNontrivialTypeSourceInfo = false); 874 TypeSpecifierType isTagName(IdentifierInfo &II, Scope *S); 875 bool isMicrosoftMissingTypename(const CXXScopeSpec *SS); 876 bool DiagnoseUnknownTypeName(const IdentifierInfo &II, 877 SourceLocation IILoc, 878 Scope *S, 879 CXXScopeSpec *SS, 880 ParsedType &SuggestedType); 881 882 /// \brief Describes the result of the name lookup and resolution performed 883 /// by \c ClassifyName(). 884 enum NameClassificationKind { 885 NC_Unknown, 886 NC_Error, 887 NC_Keyword, 888 NC_Type, 889 NC_Expression, 890 NC_NestedNameSpecifier, 891 NC_TypeTemplate, 892 NC_FunctionTemplate 893 }; 894 895 class NameClassification { 896 NameClassificationKind Kind; 897 ExprResult Expr; 898 TemplateName Template; 899 ParsedType Type; 900 const IdentifierInfo *Keyword; 901 902 explicit NameClassification(NameClassificationKind Kind) : Kind(Kind) {} 903 904 public: 905 NameClassification(ExprResult Expr) : Kind(NC_Expression), Expr(Expr) {} 906 907 NameClassification(ParsedType Type) : Kind(NC_Type), Type(Type) {} 908 909 NameClassification(const IdentifierInfo *Keyword) 910 : Kind(NC_Keyword), Keyword(Keyword) { } 911 912 static NameClassification Error() { 913 return NameClassification(NC_Error); 914 } 915 916 static NameClassification Unknown() { 917 return NameClassification(NC_Unknown); 918 } 919 920 static NameClassification NestedNameSpecifier() { 921 return NameClassification(NC_NestedNameSpecifier); 922 } 923 924 static NameClassification TypeTemplate(TemplateName Name) { 925 NameClassification Result(NC_TypeTemplate); 926 Result.Template = Name; 927 return Result; 928 } 929 930 static NameClassification FunctionTemplate(TemplateName Name) { 931 NameClassification Result(NC_FunctionTemplate); 932 Result.Template = Name; 933 return Result; 934 } 935 936 NameClassificationKind getKind() const { return Kind; } 937 938 ParsedType getType() const { 939 assert(Kind == NC_Type); 940 return Type; 941 } 942 943 ExprResult getExpression() const { 944 assert(Kind == NC_Expression); 945 return Expr; 946 } 947 948 TemplateName getTemplateName() const { 949 assert(Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate); 950 return Template; 951 } 952 953 TemplateNameKind getTemplateNameKind() const { 954 assert(Kind == NC_TypeTemplate || Kind == NC_FunctionTemplate); 955 return Kind == NC_TypeTemplate? TNK_Type_template : TNK_Function_template; 956 } 957}; 958 959 /// \brief Perform name lookup on the given name, classifying it based on 960 /// the results of name lookup and the following token. 961 /// 962 /// This routine is used by the parser to resolve identifiers and help direct 963 /// parsing. When the identifier cannot be found, this routine will attempt 964 /// to correct the typo and classify based on the resulting name. 965 /// 966 /// \param S The scope in which we're performing name lookup. 967 /// 968 /// \param SS The nested-name-specifier that precedes the name. 969 /// 970 /// \param Name The identifier. If typo correction finds an alternative name, 971 /// this pointer parameter will be updated accordingly. 972 /// 973 /// \param NameLoc The location of the identifier. 974 /// 975 /// \param NextToken The token following the identifier. Used to help 976 /// disambiguate the name. 977 NameClassification ClassifyName(Scope *S, 978 CXXScopeSpec &SS, 979 IdentifierInfo *&Name, 980 SourceLocation NameLoc, 981 const Token &NextToken); 982 983 Decl *ActOnDeclarator(Scope *S, Declarator &D); 984 985 Decl *HandleDeclarator(Scope *S, Declarator &D, 986 MultiTemplateParamsArg TemplateParameterLists, 987 bool IsFunctionDefinition); 988 void RegisterLocallyScopedExternCDecl(NamedDecl *ND, 989 const LookupResult &Previous, 990 Scope *S); 991 bool DiagnoseClassNameShadow(DeclContext *DC, DeclarationNameInfo Info); 992 void DiagnoseFunctionSpecifiers(Declarator& D); 993 void CheckShadow(Scope *S, VarDecl *D, const LookupResult& R); 994 void CheckShadow(Scope *S, VarDecl *D); 995 void CheckCastAlign(Expr *Op, QualType T, SourceRange TRange); 996 void CheckTypedefForVariablyModifiedType(Scope *S, TypedefNameDecl *D); 997 NamedDecl* ActOnTypedefDeclarator(Scope* S, Declarator& D, DeclContext* DC, 998 QualType R, TypeSourceInfo *TInfo, 999 LookupResult &Previous, bool &Redeclaration); 1000 NamedDecl* ActOnTypedefNameDecl(Scope* S, DeclContext* DC, TypedefNameDecl *D, 1001 LookupResult &Previous, bool &Redeclaration); 1002 NamedDecl* ActOnVariableDeclarator(Scope* S, Declarator& D, DeclContext* DC, 1003 QualType R, TypeSourceInfo *TInfo, 1004 LookupResult &Previous, 1005 MultiTemplateParamsArg TemplateParamLists, 1006 bool &Redeclaration); 1007 void CheckVariableDeclaration(VarDecl *NewVD, LookupResult &Previous, 1008 bool &Redeclaration); 1009 void CheckCompleteVariableDeclaration(VarDecl *var); 1010 NamedDecl* ActOnFunctionDeclarator(Scope* S, Declarator& D, DeclContext* DC, 1011 QualType R, TypeSourceInfo *TInfo, 1012 LookupResult &Previous, 1013 MultiTemplateParamsArg TemplateParamLists, 1014 bool IsFunctionDefinition, 1015 bool &Redeclaration); 1016 bool AddOverriddenMethods(CXXRecordDecl *DC, CXXMethodDecl *MD); 1017 void DiagnoseHiddenVirtualMethods(CXXRecordDecl *DC, CXXMethodDecl *MD); 1018 void CheckFunctionDeclaration(Scope *S, 1019 FunctionDecl *NewFD, LookupResult &Previous, 1020 bool IsExplicitSpecialization, 1021 bool &Redeclaration); 1022 void CheckMain(FunctionDecl *FD); 1023 Decl *ActOnParamDeclarator(Scope *S, Declarator &D); 1024 ParmVarDecl *BuildParmVarDeclForTypedef(DeclContext *DC, 1025 SourceLocation Loc, 1026 QualType T); 1027 ParmVarDecl *CheckParameter(DeclContext *DC, SourceLocation StartLoc, 1028 SourceLocation NameLoc, IdentifierInfo *Name, 1029 QualType T, TypeSourceInfo *TSInfo, 1030 StorageClass SC, StorageClass SCAsWritten); 1031 void ActOnParamDefaultArgument(Decl *param, 1032 SourceLocation EqualLoc, 1033 Expr *defarg); 1034 void ActOnParamUnparsedDefaultArgument(Decl *param, 1035 SourceLocation EqualLoc, 1036 SourceLocation ArgLoc); 1037 void ActOnParamDefaultArgumentError(Decl *param); 1038 bool SetParamDefaultArgument(ParmVarDecl *Param, Expr *DefaultArg, 1039 SourceLocation EqualLoc); 1040 1041 void AddInitializerToDecl(Decl *dcl, Expr *init, bool DirectInit, 1042 bool TypeMayContainAuto); 1043 void ActOnUninitializedDecl(Decl *dcl, bool TypeMayContainAuto); 1044 void ActOnInitializerError(Decl *Dcl); 1045 void ActOnCXXForRangeDecl(Decl *D); 1046 void SetDeclDeleted(Decl *dcl, SourceLocation DelLoc); 1047 void SetDeclDefaulted(Decl *dcl, SourceLocation DefaultLoc); 1048 void FinalizeDeclaration(Decl *D); 1049 DeclGroupPtrTy FinalizeDeclaratorGroup(Scope *S, const DeclSpec &DS, 1050 Decl **Group, 1051 unsigned NumDecls); 1052 DeclGroupPtrTy BuildDeclaratorGroup(Decl **Group, unsigned NumDecls, 1053 bool TypeMayContainAuto = true); 1054 void ActOnFinishKNRParamDeclarations(Scope *S, Declarator &D, 1055 SourceLocation LocAfterDecls); 1056 void CheckForFunctionRedefinition(FunctionDecl *FD); 1057 Decl *ActOnStartOfFunctionDef(Scope *S, Declarator &D); 1058 Decl *ActOnStartOfFunctionDef(Scope *S, Decl *D); 1059 void ActOnStartOfObjCMethodDef(Scope *S, Decl *D); 1060 1061 Decl *ActOnFinishFunctionBody(Decl *Decl, Stmt *Body); 1062 Decl *ActOnFinishFunctionBody(Decl *Decl, Stmt *Body, bool IsInstantiation); 1063 1064 /// \brief Diagnose any unused parameters in the given sequence of 1065 /// ParmVarDecl pointers. 1066 void DiagnoseUnusedParameters(ParmVarDecl * const *Begin, 1067 ParmVarDecl * const *End); 1068 1069 /// \brief Diagnose whether the size of parameters or return value of a 1070 /// function or obj-c method definition is pass-by-value and larger than a 1071 /// specified threshold. 1072 void DiagnoseSizeOfParametersAndReturnValue(ParmVarDecl * const *Begin, 1073 ParmVarDecl * const *End, 1074 QualType ReturnTy, 1075 NamedDecl *D); 1076 1077 void DiagnoseInvalidJumps(Stmt *Body); 1078 Decl *ActOnFileScopeAsmDecl(Expr *expr, 1079 SourceLocation AsmLoc, 1080 SourceLocation RParenLoc); 1081 1082 /// Scope actions. 1083 void ActOnPopScope(SourceLocation Loc, Scope *S); 1084 void ActOnTranslationUnitScope(Scope *S); 1085 1086 Decl *ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS, 1087 DeclSpec &DS); 1088 Decl *ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS, 1089 DeclSpec &DS, 1090 MultiTemplateParamsArg TemplateParams); 1091 1092 StmtResult ActOnVlaStmt(const DeclSpec &DS); 1093 1094 Decl *BuildAnonymousStructOrUnion(Scope *S, DeclSpec &DS, 1095 AccessSpecifier AS, 1096 RecordDecl *Record); 1097 1098 Decl *BuildMicrosoftCAnonymousStruct(Scope *S, DeclSpec &DS, 1099 RecordDecl *Record); 1100 1101 bool isAcceptableTagRedeclaration(const TagDecl *Previous, 1102 TagTypeKind NewTag, bool isDefinition, 1103 SourceLocation NewTagLoc, 1104 const IdentifierInfo &Name); 1105 1106 enum TagUseKind { 1107 TUK_Reference, // Reference to a tag: 'struct foo *X;' 1108 TUK_Declaration, // Fwd decl of a tag: 'struct foo;' 1109 TUK_Definition, // Definition of a tag: 'struct foo { int X; } Y;' 1110 TUK_Friend // Friend declaration: 'friend struct foo;' 1111 }; 1112 1113 Decl *ActOnTag(Scope *S, unsigned TagSpec, TagUseKind TUK, 1114 SourceLocation KWLoc, CXXScopeSpec &SS, 1115 IdentifierInfo *Name, SourceLocation NameLoc, 1116 AttributeList *Attr, AccessSpecifier AS, 1117 MultiTemplateParamsArg TemplateParameterLists, 1118 bool &OwnedDecl, bool &IsDependent, bool ScopedEnum, 1119 bool ScopedEnumUsesClassTag, TypeResult UnderlyingType); 1120 1121 Decl *ActOnTemplatedFriendTag(Scope *S, SourceLocation FriendLoc, 1122 unsigned TagSpec, SourceLocation TagLoc, 1123 CXXScopeSpec &SS, 1124 IdentifierInfo *Name, SourceLocation NameLoc, 1125 AttributeList *Attr, 1126 MultiTemplateParamsArg TempParamLists); 1127 1128 TypeResult ActOnDependentTag(Scope *S, 1129 unsigned TagSpec, 1130 TagUseKind TUK, 1131 const CXXScopeSpec &SS, 1132 IdentifierInfo *Name, 1133 SourceLocation TagLoc, 1134 SourceLocation NameLoc); 1135 1136 void ActOnDefs(Scope *S, Decl *TagD, SourceLocation DeclStart, 1137 IdentifierInfo *ClassName, 1138 SmallVectorImpl<Decl *> &Decls); 1139 Decl *ActOnField(Scope *S, Decl *TagD, SourceLocation DeclStart, 1140 Declarator &D, Expr *BitfieldWidth); 1141 1142 FieldDecl *HandleField(Scope *S, RecordDecl *TagD, SourceLocation DeclStart, 1143 Declarator &D, Expr *BitfieldWidth, bool HasInit, 1144 AccessSpecifier AS); 1145 1146 FieldDecl *CheckFieldDecl(DeclarationName Name, QualType T, 1147 TypeSourceInfo *TInfo, 1148 RecordDecl *Record, SourceLocation Loc, 1149 bool Mutable, Expr *BitfieldWidth, bool HasInit, 1150 SourceLocation TSSL, 1151 AccessSpecifier AS, NamedDecl *PrevDecl, 1152 Declarator *D = 0); 1153 1154 enum CXXSpecialMember { 1155 CXXDefaultConstructor, 1156 CXXCopyConstructor, 1157 CXXMoveConstructor, 1158 CXXCopyAssignment, 1159 CXXMoveAssignment, 1160 CXXDestructor, 1161 CXXInvalid 1162 }; 1163 bool CheckNontrivialField(FieldDecl *FD); 1164 void DiagnoseNontrivial(const RecordType* Record, CXXSpecialMember mem); 1165 CXXSpecialMember getSpecialMember(const CXXMethodDecl *MD); 1166 void ActOnLastBitfield(SourceLocation DeclStart, Decl *IntfDecl, 1167 SmallVectorImpl<Decl *> &AllIvarDecls); 1168 Decl *ActOnIvar(Scope *S, SourceLocation DeclStart, Decl *IntfDecl, 1169 Declarator &D, Expr *BitfieldWidth, 1170 tok::ObjCKeywordKind visibility); 1171 1172 // This is used for both record definitions and ObjC interface declarations. 1173 void ActOnFields(Scope* S, SourceLocation RecLoc, Decl *TagDecl, 1174 Decl **Fields, unsigned NumFields, 1175 SourceLocation LBrac, SourceLocation RBrac, 1176 AttributeList *AttrList); 1177 1178 /// ActOnTagStartDefinition - Invoked when we have entered the 1179 /// scope of a tag's definition (e.g., for an enumeration, class, 1180 /// struct, or union). 1181 void ActOnTagStartDefinition(Scope *S, Decl *TagDecl); 1182 1183 /// ActOnStartCXXMemberDeclarations - Invoked when we have parsed a 1184 /// C++ record definition's base-specifiers clause and are starting its 1185 /// member declarations. 1186 void ActOnStartCXXMemberDeclarations(Scope *S, Decl *TagDecl, 1187 SourceLocation FinalLoc, 1188 SourceLocation LBraceLoc); 1189 1190 /// ActOnTagFinishDefinition - Invoked once we have finished parsing 1191 /// the definition of a tag (enumeration, class, struct, or union). 1192 void ActOnTagFinishDefinition(Scope *S, Decl *TagDecl, 1193 SourceLocation RBraceLoc); 1194 1195 /// ActOnTagDefinitionError - Invoked when there was an unrecoverable 1196 /// error parsing the definition of a tag. 1197 void ActOnTagDefinitionError(Scope *S, Decl *TagDecl); 1198 1199 EnumConstantDecl *CheckEnumConstant(EnumDecl *Enum, 1200 EnumConstantDecl *LastEnumConst, 1201 SourceLocation IdLoc, 1202 IdentifierInfo *Id, 1203 Expr *val); 1204 1205 Decl *ActOnEnumConstant(Scope *S, Decl *EnumDecl, Decl *LastEnumConstant, 1206 SourceLocation IdLoc, IdentifierInfo *Id, 1207 AttributeList *Attrs, 1208 SourceLocation EqualLoc, Expr *Val); 1209 void ActOnEnumBody(SourceLocation EnumLoc, SourceLocation LBraceLoc, 1210 SourceLocation RBraceLoc, Decl *EnumDecl, 1211 Decl **Elements, unsigned NumElements, 1212 Scope *S, AttributeList *Attr); 1213 1214 DeclContext *getContainingDC(DeclContext *DC); 1215 1216 /// Set the current declaration context until it gets popped. 1217 void PushDeclContext(Scope *S, DeclContext *DC); 1218 void PopDeclContext(); 1219 1220 /// EnterDeclaratorContext - Used when we must lookup names in the context 1221 /// of a declarator's nested name specifier. 1222 void EnterDeclaratorContext(Scope *S, DeclContext *DC); 1223 void ExitDeclaratorContext(Scope *S); 1224 1225 DeclContext *getFunctionLevelDeclContext(); 1226 1227 /// getCurFunctionDecl - If inside of a function body, this returns a pointer 1228 /// to the function decl for the function being parsed. If we're currently 1229 /// in a 'block', this returns the containing context. 1230 FunctionDecl *getCurFunctionDecl(); 1231 1232 /// getCurMethodDecl - If inside of a method body, this returns a pointer to 1233 /// the method decl for the method being parsed. If we're currently 1234 /// in a 'block', this returns the containing context. 1235 ObjCMethodDecl *getCurMethodDecl(); 1236 1237 /// getCurFunctionOrMethodDecl - Return the Decl for the current ObjC method 1238 /// or C function we're in, otherwise return null. If we're currently 1239 /// in a 'block', this returns the containing context. 1240 NamedDecl *getCurFunctionOrMethodDecl(); 1241 1242 /// Add this decl to the scope shadowed decl chains. 1243 void PushOnScopeChains(NamedDecl *D, Scope *S, bool AddToContext = true); 1244 1245 /// isDeclInScope - If 'Ctx' is a function/method, isDeclInScope returns true 1246 /// if 'D' is in Scope 'S', otherwise 'S' is ignored and isDeclInScope returns 1247 /// true if 'D' belongs to the given declaration context. 1248 /// 1249 /// \param ExplicitInstantiationOrSpecialization When true, we are checking 1250 /// whether the declaration is in scope for the purposes of explicit template 1251 /// instantiation or specialization. The default is false. 1252 bool isDeclInScope(NamedDecl *&D, DeclContext *Ctx, Scope *S = 0, 1253 bool ExplicitInstantiationOrSpecialization = false); 1254 1255 /// Finds the scope corresponding to the given decl context, if it 1256 /// happens to be an enclosing scope. Otherwise return NULL. 1257 static Scope *getScopeForDeclContext(Scope *S, DeclContext *DC); 1258 1259 /// Subroutines of ActOnDeclarator(). 1260 TypedefDecl *ParseTypedefDecl(Scope *S, Declarator &D, QualType T, 1261 TypeSourceInfo *TInfo); 1262 void MergeTypedefNameDecl(TypedefNameDecl *New, LookupResult &OldDecls); 1263 bool MergeFunctionDecl(FunctionDecl *New, Decl *Old); 1264 bool MergeCompatibleFunctionDecls(FunctionDecl *New, FunctionDecl *Old); 1265 void mergeObjCMethodDecls(ObjCMethodDecl *New, const ObjCMethodDecl *Old); 1266 void MergeVarDecl(VarDecl *New, LookupResult &OldDecls); 1267 void MergeVarDeclTypes(VarDecl *New, VarDecl *Old); 1268 void MergeVarDeclExceptionSpecs(VarDecl *New, VarDecl *Old); 1269 bool MergeCXXFunctionDecl(FunctionDecl *New, FunctionDecl *Old); 1270 1271 // AssignmentAction - This is used by all the assignment diagnostic functions 1272 // to represent what is actually causing the operation 1273 enum AssignmentAction { 1274 AA_Assigning, 1275 AA_Passing, 1276 AA_Returning, 1277 AA_Converting, 1278 AA_Initializing, 1279 AA_Sending, 1280 AA_Casting 1281 }; 1282 1283 /// C++ Overloading. 1284 enum OverloadKind { 1285 /// This is a legitimate overload: the existing declarations are 1286 /// functions or function templates with different signatures. 1287 Ovl_Overload, 1288 1289 /// This is not an overload because the signature exactly matches 1290 /// an existing declaration. 1291 Ovl_Match, 1292 1293 /// This is not an overload because the lookup results contain a 1294 /// non-function. 1295 Ovl_NonFunction 1296 }; 1297 OverloadKind CheckOverload(Scope *S, 1298 FunctionDecl *New, 1299 const LookupResult &OldDecls, 1300 NamedDecl *&OldDecl, 1301 bool IsForUsingDecl); 1302 bool IsOverload(FunctionDecl *New, FunctionDecl *Old, bool IsForUsingDecl); 1303 1304 /// \brief Checks availability of the function depending on the current 1305 /// function context.Inside an unavailable function,unavailability is ignored. 1306 /// 1307 /// \returns true if \arg FD is unavailable and current context is inside 1308 /// an available function, false otherwise. 1309 bool isFunctionConsideredUnavailable(FunctionDecl *FD); 1310 1311 ImplicitConversionSequence 1312 TryImplicitConversion(Expr *From, QualType ToType, 1313 bool SuppressUserConversions, 1314 bool AllowExplicit, 1315 bool InOverloadResolution, 1316 bool CStyle, 1317 bool AllowObjCWritebackConversion); 1318 1319 bool IsIntegralPromotion(Expr *From, QualType FromType, QualType ToType); 1320 bool IsFloatingPointPromotion(QualType FromType, QualType ToType); 1321 bool IsComplexPromotion(QualType FromType, QualType ToType); 1322 bool IsPointerConversion(Expr *From, QualType FromType, QualType ToType, 1323 bool InOverloadResolution, 1324 QualType& ConvertedType, bool &IncompatibleObjC); 1325 bool isObjCPointerConversion(QualType FromType, QualType ToType, 1326 QualType& ConvertedType, bool &IncompatibleObjC); 1327 bool isObjCWritebackConversion(QualType FromType, QualType ToType, 1328 QualType &ConvertedType); 1329 bool IsBlockPointerConversion(QualType FromType, QualType ToType, 1330 QualType& ConvertedType); 1331 bool FunctionArgTypesAreEqual(const FunctionProtoType *OldType, 1332 const FunctionProtoType *NewType); 1333 1334 bool CheckPointerConversion(Expr *From, QualType ToType, 1335 CastKind &Kind, 1336 CXXCastPath& BasePath, 1337 bool IgnoreBaseAccess); 1338 bool IsMemberPointerConversion(Expr *From, QualType FromType, QualType ToType, 1339 bool InOverloadResolution, 1340 QualType &ConvertedType); 1341 bool CheckMemberPointerConversion(Expr *From, QualType ToType, 1342 CastKind &Kind, 1343 CXXCastPath &BasePath, 1344 bool IgnoreBaseAccess); 1345 bool IsQualificationConversion(QualType FromType, QualType ToType, 1346 bool CStyle, bool &ObjCLifetimeConversion); 1347 bool IsNoReturnConversion(QualType FromType, QualType ToType, 1348 QualType &ResultTy); 1349 bool DiagnoseMultipleUserDefinedConversion(Expr *From, QualType ToType); 1350 1351 1352 ExprResult PerformMoveOrCopyInitialization(const InitializedEntity &Entity, 1353 const VarDecl *NRVOCandidate, 1354 QualType ResultType, 1355 Expr *Value, 1356 bool AllowNRVO = true); 1357 1358 bool CanPerformCopyInitialization(const InitializedEntity &Entity, 1359 ExprResult Init); 1360 ExprResult PerformCopyInitialization(const InitializedEntity &Entity, 1361 SourceLocation EqualLoc, 1362 ExprResult Init, 1363 bool TopLevelOfInitList = false); 1364 ExprResult PerformObjectArgumentInitialization(Expr *From, 1365 NestedNameSpecifier *Qualifier, 1366 NamedDecl *FoundDecl, 1367 CXXMethodDecl *Method); 1368 1369 ExprResult PerformContextuallyConvertToBool(Expr *From); 1370 ExprResult PerformContextuallyConvertToObjCId(Expr *From); 1371 1372 ExprResult 1373 ConvertToIntegralOrEnumerationType(SourceLocation Loc, Expr *FromE, 1374 const PartialDiagnostic &NotIntDiag, 1375 const PartialDiagnostic &IncompleteDiag, 1376 const PartialDiagnostic &ExplicitConvDiag, 1377 const PartialDiagnostic &ExplicitConvNote, 1378 const PartialDiagnostic &AmbigDiag, 1379 const PartialDiagnostic &AmbigNote, 1380 const PartialDiagnostic &ConvDiag); 1381 1382 ExprResult PerformObjectMemberConversion(Expr *From, 1383 NestedNameSpecifier *Qualifier, 1384 NamedDecl *FoundDecl, 1385 NamedDecl *Member); 1386 1387 // Members have to be NamespaceDecl* or TranslationUnitDecl*. 1388 // TODO: make this is a typesafe union. 1389 typedef llvm::SmallPtrSet<DeclContext *, 16> AssociatedNamespaceSet; 1390 typedef llvm::SmallPtrSet<CXXRecordDecl *, 16> AssociatedClassSet; 1391 1392 void AddOverloadCandidate(NamedDecl *Function, 1393 DeclAccessPair FoundDecl, 1394 Expr **Args, unsigned NumArgs, 1395 OverloadCandidateSet &CandidateSet); 1396 1397 void AddOverloadCandidate(FunctionDecl *Function, 1398 DeclAccessPair FoundDecl, 1399 Expr **Args, unsigned NumArgs, 1400 OverloadCandidateSet& CandidateSet, 1401 bool SuppressUserConversions = false, 1402 bool PartialOverloading = false); 1403 void AddFunctionCandidates(const UnresolvedSetImpl &Functions, 1404 Expr **Args, unsigned NumArgs, 1405 OverloadCandidateSet& CandidateSet, 1406 bool SuppressUserConversions = false); 1407 void AddMethodCandidate(DeclAccessPair FoundDecl, 1408 QualType ObjectType, 1409 Expr::Classification ObjectClassification, 1410 Expr **Args, unsigned NumArgs, 1411 OverloadCandidateSet& CandidateSet, 1412 bool SuppressUserConversion = false); 1413 void AddMethodCandidate(CXXMethodDecl *Method, 1414 DeclAccessPair FoundDecl, 1415 CXXRecordDecl *ActingContext, QualType ObjectType, 1416 Expr::Classification ObjectClassification, 1417 Expr **Args, unsigned NumArgs, 1418 OverloadCandidateSet& CandidateSet, 1419 bool SuppressUserConversions = false); 1420 void AddMethodTemplateCandidate(FunctionTemplateDecl *MethodTmpl, 1421 DeclAccessPair FoundDecl, 1422 CXXRecordDecl *ActingContext, 1423 TemplateArgumentListInfo *ExplicitTemplateArgs, 1424 QualType ObjectType, 1425 Expr::Classification ObjectClassification, 1426 Expr **Args, unsigned NumArgs, 1427 OverloadCandidateSet& CandidateSet, 1428 bool SuppressUserConversions = false); 1429 void AddTemplateOverloadCandidate(FunctionTemplateDecl *FunctionTemplate, 1430 DeclAccessPair FoundDecl, 1431 TemplateArgumentListInfo *ExplicitTemplateArgs, 1432 Expr **Args, unsigned NumArgs, 1433 OverloadCandidateSet& CandidateSet, 1434 bool SuppressUserConversions = false); 1435 void AddConversionCandidate(CXXConversionDecl *Conversion, 1436 DeclAccessPair FoundDecl, 1437 CXXRecordDecl *ActingContext, 1438 Expr *From, QualType ToType, 1439 OverloadCandidateSet& CandidateSet); 1440 void AddTemplateConversionCandidate(FunctionTemplateDecl *FunctionTemplate, 1441 DeclAccessPair FoundDecl, 1442 CXXRecordDecl *ActingContext, 1443 Expr *From, QualType ToType, 1444 OverloadCandidateSet &CandidateSet); 1445 void AddSurrogateCandidate(CXXConversionDecl *Conversion, 1446 DeclAccessPair FoundDecl, 1447 CXXRecordDecl *ActingContext, 1448 const FunctionProtoType *Proto, 1449 Expr *Object, Expr **Args, unsigned NumArgs, 1450 OverloadCandidateSet& CandidateSet); 1451 void AddMemberOperatorCandidates(OverloadedOperatorKind Op, 1452 SourceLocation OpLoc, 1453 Expr **Args, unsigned NumArgs, 1454 OverloadCandidateSet& CandidateSet, 1455 SourceRange OpRange = SourceRange()); 1456 void AddBuiltinCandidate(QualType ResultTy, QualType *ParamTys, 1457 Expr **Args, unsigned NumArgs, 1458 OverloadCandidateSet& CandidateSet, 1459 bool IsAssignmentOperator = false, 1460 unsigned NumContextualBoolArguments = 0); 1461 void AddBuiltinOperatorCandidates(OverloadedOperatorKind Op, 1462 SourceLocation OpLoc, 1463 Expr **Args, unsigned NumArgs, 1464 OverloadCandidateSet& CandidateSet); 1465 void AddArgumentDependentLookupCandidates(DeclarationName Name, 1466 bool Operator, 1467 Expr **Args, unsigned NumArgs, 1468 TemplateArgumentListInfo *ExplicitTemplateArgs, 1469 OverloadCandidateSet& CandidateSet, 1470 bool PartialOverloading = false, 1471 bool StdNamespaceIsAssociated = false); 1472 1473 // Emit as a 'note' the specific overload candidate 1474 void NoteOverloadCandidate(FunctionDecl *Fn); 1475 1476 // Emit as a series of 'note's all template and non-templates 1477 // identified by the expression Expr 1478 void NoteAllOverloadCandidates(Expr* E); 1479 1480 // [PossiblyAFunctionType] --> [Return] 1481 // NonFunctionType --> NonFunctionType 1482 // R (A) --> R(A) 1483 // R (*)(A) --> R (A) 1484 // R (&)(A) --> R (A) 1485 // R (S::*)(A) --> R (A) 1486 QualType ExtractUnqualifiedFunctionType(QualType PossiblyAFunctionType); 1487 1488 FunctionDecl *ResolveAddressOfOverloadedFunction(Expr *AddressOfExpr, QualType TargetType, 1489 bool Complain, 1490 DeclAccessPair &Found); 1491 1492 FunctionDecl *ResolveSingleFunctionTemplateSpecialization(OverloadExpr *ovl, 1493 bool Complain = false, 1494 DeclAccessPair* Found = 0); 1495 1496 ExprResult ResolveAndFixSingleFunctionTemplateSpecialization( 1497 Expr *SrcExpr, bool DoFunctionPointerConverion = false, 1498 bool Complain = false, 1499 const SourceRange& OpRangeForComplaining = SourceRange(), 1500 QualType DestTypeForComplaining = QualType(), 1501 unsigned DiagIDForComplaining = 0); 1502 1503 1504 Expr *FixOverloadedFunctionReference(Expr *E, 1505 DeclAccessPair FoundDecl, 1506 FunctionDecl *Fn); 1507 ExprResult FixOverloadedFunctionReference(ExprResult, 1508 DeclAccessPair FoundDecl, 1509 FunctionDecl *Fn); 1510 1511 void AddOverloadedCallCandidates(UnresolvedLookupExpr *ULE, 1512 Expr **Args, unsigned NumArgs, 1513 OverloadCandidateSet &CandidateSet, 1514 bool PartialOverloading = false); 1515 1516 ExprResult BuildOverloadedCallExpr(Scope *S, Expr *Fn, 1517 UnresolvedLookupExpr *ULE, 1518 SourceLocation LParenLoc, 1519 Expr **Args, unsigned NumArgs, 1520 SourceLocation RParenLoc, 1521 Expr *ExecConfig); 1522 1523 ExprResult CreateOverloadedUnaryOp(SourceLocation OpLoc, 1524 unsigned Opc, 1525 const UnresolvedSetImpl &Fns, 1526 Expr *input); 1527 1528 ExprResult CreateOverloadedBinOp(SourceLocation OpLoc, 1529 unsigned Opc, 1530 const UnresolvedSetImpl &Fns, 1531 Expr *LHS, Expr *RHS); 1532 1533 ExprResult CreateOverloadedArraySubscriptExpr(SourceLocation LLoc, 1534 SourceLocation RLoc, 1535 Expr *Base,Expr *Idx); 1536 1537 ExprResult 1538 BuildCallToMemberFunction(Scope *S, Expr *MemExpr, 1539 SourceLocation LParenLoc, Expr **Args, 1540 unsigned NumArgs, SourceLocation RParenLoc); 1541 ExprResult 1542 BuildCallToObjectOfClassType(Scope *S, Expr *Object, SourceLocation LParenLoc, 1543 Expr **Args, unsigned NumArgs, 1544 SourceLocation RParenLoc); 1545 1546 ExprResult BuildOverloadedArrowExpr(Scope *S, Expr *Base, 1547 SourceLocation OpLoc); 1548 1549 /// CheckCallReturnType - Checks that a call expression's return type is 1550 /// complete. Returns true on failure. The location passed in is the location 1551 /// that best represents the call. 1552 bool CheckCallReturnType(QualType ReturnType, SourceLocation Loc, 1553 CallExpr *CE, FunctionDecl *FD); 1554 1555 /// Helpers for dealing with blocks and functions. 1556 bool CheckParmsForFunctionDef(ParmVarDecl **Param, ParmVarDecl **ParamEnd, 1557 bool CheckParameterNames); 1558 void CheckCXXDefaultArguments(FunctionDecl *FD); 1559 void CheckExtraCXXDefaultArguments(Declarator &D); 1560 Scope *getNonFieldDeclScope(Scope *S); 1561 1562 /// \name Name lookup 1563 /// 1564 /// These routines provide name lookup that is used during semantic 1565 /// analysis to resolve the various kinds of names (identifiers, 1566 /// overloaded operator names, constructor names, etc.) into zero or 1567 /// more declarations within a particular scope. The major entry 1568 /// points are LookupName, which performs unqualified name lookup, 1569 /// and LookupQualifiedName, which performs qualified name lookup. 1570 /// 1571 /// All name lookup is performed based on some specific criteria, 1572 /// which specify what names will be visible to name lookup and how 1573 /// far name lookup should work. These criteria are important both 1574 /// for capturing language semantics (certain lookups will ignore 1575 /// certain names, for example) and for performance, since name 1576 /// lookup is often a bottleneck in the compilation of C++. Name 1577 /// lookup criteria is specified via the LookupCriteria enumeration. 1578 /// 1579 /// The results of name lookup can vary based on the kind of name 1580 /// lookup performed, the current language, and the translation 1581 /// unit. In C, for example, name lookup will either return nothing 1582 /// (no entity found) or a single declaration. In C++, name lookup 1583 /// can additionally refer to a set of overloaded functions or 1584 /// result in an ambiguity. All of the possible results of name 1585 /// lookup are captured by the LookupResult class, which provides 1586 /// the ability to distinguish among them. 1587 //@{ 1588 1589 /// @brief Describes the kind of name lookup to perform. 1590 enum LookupNameKind { 1591 /// Ordinary name lookup, which finds ordinary names (functions, 1592 /// variables, typedefs, etc.) in C and most kinds of names 1593 /// (functions, variables, members, types, etc.) in C++. 1594 LookupOrdinaryName = 0, 1595 /// Tag name lookup, which finds the names of enums, classes, 1596 /// structs, and unions. 1597 LookupTagName, 1598 /// Label name lookup. 1599 LookupLabel, 1600 /// Member name lookup, which finds the names of 1601 /// class/struct/union members. 1602 LookupMemberName, 1603 /// Look up of an operator name (e.g., operator+) for use with 1604 /// operator overloading. This lookup is similar to ordinary name 1605 /// lookup, but will ignore any declarations that are class members. 1606 LookupOperatorName, 1607 /// Look up of a name that precedes the '::' scope resolution 1608 /// operator in C++. This lookup completely ignores operator, object, 1609 /// function, and enumerator names (C++ [basic.lookup.qual]p1). 1610 LookupNestedNameSpecifierName, 1611 /// Look up a namespace name within a C++ using directive or 1612 /// namespace alias definition, ignoring non-namespace names (C++ 1613 /// [basic.lookup.udir]p1). 1614 LookupNamespaceName, 1615 /// Look up all declarations in a scope with the given name, 1616 /// including resolved using declarations. This is appropriate 1617 /// for checking redeclarations for a using declaration. 1618 LookupUsingDeclName, 1619 /// Look up an ordinary name that is going to be redeclared as a 1620 /// name with linkage. This lookup ignores any declarations that 1621 /// are outside of the current scope unless they have linkage. See 1622 /// C99 6.2.2p4-5 and C++ [basic.link]p6. 1623 LookupRedeclarationWithLinkage, 1624 /// Look up the name of an Objective-C protocol. 1625 LookupObjCProtocolName, 1626 /// Look up implicit 'self' parameter of an objective-c method. 1627 LookupObjCImplicitSelfParam, 1628 /// \brief Look up any declaration with any name. 1629 LookupAnyName 1630 }; 1631 1632 /// \brief Specifies whether (or how) name lookup is being performed for a 1633 /// redeclaration (vs. a reference). 1634 enum RedeclarationKind { 1635 /// \brief The lookup is a reference to this name that is not for the 1636 /// purpose of redeclaring the name. 1637 NotForRedeclaration = 0, 1638 /// \brief The lookup results will be used for redeclaration of a name, 1639 /// if an entity by that name already exists. 1640 ForRedeclaration 1641 }; 1642 1643private: 1644 bool CppLookupName(LookupResult &R, Scope *S); 1645 1646 SpecialMemberOverloadResult *LookupSpecialMember(CXXRecordDecl *D, 1647 CXXSpecialMember SM, 1648 bool ConstArg, 1649 bool VolatileArg, 1650 bool RValueThis, 1651 bool ConstThis, 1652 bool VolatileThis); 1653 1654 // \brief The set of known/encountered (unique, canonicalized) NamespaceDecls. 1655 // 1656 // The boolean value will be true to indicate that the namespace was loaded 1657 // from an AST/PCH file, or false otherwise. 1658 llvm::DenseMap<NamespaceDecl*, bool> KnownNamespaces; 1659 1660 /// \brief Whether we have already loaded known namespaces from an extenal 1661 /// source. 1662 bool LoadedExternalKnownNamespaces; 1663 1664public: 1665 /// \brief Look up a name, looking for a single declaration. Return 1666 /// null if the results were absent, ambiguous, or overloaded. 1667 /// 1668 /// It is preferable to use the elaborated form and explicitly handle 1669 /// ambiguity and overloaded. 1670 NamedDecl *LookupSingleName(Scope *S, DeclarationName Name, 1671 SourceLocation Loc, 1672 LookupNameKind NameKind, 1673 RedeclarationKind Redecl 1674 = NotForRedeclaration); 1675 bool LookupName(LookupResult &R, Scope *S, 1676 bool AllowBuiltinCreation = false); 1677 bool LookupQualifiedName(LookupResult &R, DeclContext *LookupCtx, 1678 bool InUnqualifiedLookup = false); 1679 bool LookupParsedName(LookupResult &R, Scope *S, CXXScopeSpec *SS, 1680 bool AllowBuiltinCreation = false, 1681 bool EnteringContext = false); 1682 ObjCProtocolDecl *LookupProtocol(IdentifierInfo *II, SourceLocation IdLoc); 1683 1684 void LookupOverloadedOperatorName(OverloadedOperatorKind Op, Scope *S, 1685 QualType T1, QualType T2, 1686 UnresolvedSetImpl &Functions); 1687 1688 LabelDecl *LookupOrCreateLabel(IdentifierInfo *II, SourceLocation IdentLoc, 1689 SourceLocation GnuLabelLoc = SourceLocation()); 1690 1691 DeclContextLookupResult LookupConstructors(CXXRecordDecl *Class); 1692 CXXConstructorDecl *LookupDefaultConstructor(CXXRecordDecl *Class); 1693 CXXConstructorDecl *LookupCopyingConstructor(CXXRecordDecl *Class, 1694 unsigned Quals, 1695 bool *ConstParam = 0); 1696 CXXMethodDecl *LookupCopyingAssignment(CXXRecordDecl *Class, unsigned Quals, 1697 bool RValueThis, unsigned ThisQuals, 1698 bool *ConstParam = 0); 1699 CXXDestructorDecl *LookupDestructor(CXXRecordDecl *Class); 1700 1701 void ArgumentDependentLookup(DeclarationName Name, bool Operator, 1702 Expr **Args, unsigned NumArgs, 1703 ADLResult &Functions, 1704 bool StdNamespaceIsAssociated = false); 1705 1706 void LookupVisibleDecls(Scope *S, LookupNameKind Kind, 1707 VisibleDeclConsumer &Consumer, 1708 bool IncludeGlobalScope = true); 1709 void LookupVisibleDecls(DeclContext *Ctx, LookupNameKind Kind, 1710 VisibleDeclConsumer &Consumer, 1711 bool IncludeGlobalScope = true); 1712 1713 /// \brief The context in which typo-correction occurs. 1714 /// 1715 /// The typo-correction context affects which keywords (if any) are 1716 /// considered when trying to correct for typos. 1717 enum CorrectTypoContext { 1718 /// \brief An unknown context, where any keyword might be valid. 1719 CTC_Unknown, 1720 /// \brief A context where no keywords are used (e.g. we expect an actual 1721 /// name). 1722 CTC_NoKeywords, 1723 /// \brief A context where we're correcting a type name. 1724 CTC_Type, 1725 /// \brief An expression context. 1726 CTC_Expression, 1727 /// \brief A type cast, or anything else that can be followed by a '<'. 1728 CTC_CXXCasts, 1729 /// \brief A member lookup context. 1730 CTC_MemberLookup, 1731 /// \brief An Objective-C ivar lookup context (e.g., self->ivar). 1732 CTC_ObjCIvarLookup, 1733 /// \brief An Objective-C property lookup context (e.g., self.prop). 1734 CTC_ObjCPropertyLookup, 1735 /// \brief The receiver of an Objective-C message send within an 1736 /// Objective-C method where 'super' is a valid keyword. 1737 CTC_ObjCMessageReceiver 1738 }; 1739 1740 TypoCorrection CorrectTypo(const DeclarationNameInfo &Typo, 1741 Sema::LookupNameKind LookupKind, 1742 Scope *S, CXXScopeSpec *SS, 1743 DeclContext *MemberContext = NULL, 1744 bool EnteringContext = false, 1745 CorrectTypoContext CTC = CTC_Unknown, 1746 const ObjCObjectPointerType *OPT = NULL); 1747 1748 void FindAssociatedClassesAndNamespaces(Expr **Args, unsigned NumArgs, 1749 AssociatedNamespaceSet &AssociatedNamespaces, 1750 AssociatedClassSet &AssociatedClasses); 1751 1752 void FilterLookupForScope(LookupResult &R, DeclContext *Ctx, Scope *S, 1753 bool ConsiderLinkage, 1754 bool ExplicitInstantiationOrSpecialization); 1755 1756 bool DiagnoseAmbiguousLookup(LookupResult &Result); 1757 //@} 1758 1759 ObjCInterfaceDecl *getObjCInterfaceDecl(IdentifierInfo *&Id, 1760 SourceLocation IdLoc, 1761 bool TypoCorrection = false); 1762 NamedDecl *LazilyCreateBuiltin(IdentifierInfo *II, unsigned ID, 1763 Scope *S, bool ForRedeclaration, 1764 SourceLocation Loc); 1765 NamedDecl *ImplicitlyDefineFunction(SourceLocation Loc, IdentifierInfo &II, 1766 Scope *S); 1767 void AddKnownFunctionAttributes(FunctionDecl *FD); 1768 1769 // More parsing and symbol table subroutines. 1770 1771 // Decl attributes - this routine is the top level dispatcher. 1772 void ProcessDeclAttributes(Scope *S, Decl *D, const Declarator &PD, 1773 bool NonInheritable = true, bool Inheritable = true); 1774 void ProcessDeclAttributeList(Scope *S, Decl *D, const AttributeList *AL, 1775 bool NonInheritable = true, bool Inheritable = true); 1776 1777 bool CheckRegparmAttr(const AttributeList &attr, unsigned &value); 1778 bool CheckCallingConvAttr(const AttributeList &attr, CallingConv &CC); 1779 bool CheckNoReturnAttr(const AttributeList &attr); 1780 1781 void WarnUndefinedMethod(SourceLocation ImpLoc, ObjCMethodDecl *method, 1782 bool &IncompleteImpl, unsigned DiagID); 1783 void WarnConflictingTypedMethods(ObjCMethodDecl *Method, 1784 ObjCMethodDecl *MethodDecl, 1785 bool IsProtocolMethodDecl, 1786 bool IsDeclaration = false); 1787 1788 bool isPropertyReadonly(ObjCPropertyDecl *PropertyDecl, 1789 ObjCInterfaceDecl *IDecl); 1790 1791 typedef llvm::DenseSet<Selector, llvm::DenseMapInfo<Selector> > SelectorSet; 1792 1793 /// CheckProtocolMethodDefs - This routine checks unimplemented 1794 /// methods declared in protocol, and those referenced by it. 1795 /// \param IDecl - Used for checking for methods which may have been 1796 /// inherited. 1797 void CheckProtocolMethodDefs(SourceLocation ImpLoc, 1798 ObjCProtocolDecl *PDecl, 1799 bool& IncompleteImpl, 1800 const SelectorSet &InsMap, 1801 const SelectorSet &ClsMap, 1802 ObjCContainerDecl *CDecl); 1803 1804 /// CheckImplementationIvars - This routine checks if the instance variables 1805 /// listed in the implelementation match those listed in the interface. 1806 void CheckImplementationIvars(ObjCImplementationDecl *ImpDecl, 1807 ObjCIvarDecl **Fields, unsigned nIvars, 1808 SourceLocation Loc); 1809 1810 /// \brief Determine whether we can synthesize a provisional ivar for the 1811 /// given name. 1812 ObjCPropertyDecl *canSynthesizeProvisionalIvar(IdentifierInfo *II); 1813 1814 /// \brief Determine whether we can synthesize a provisional ivar for the 1815 /// given property. 1816 bool canSynthesizeProvisionalIvar(ObjCPropertyDecl *Property); 1817 1818 /// ImplMethodsVsClassMethods - This is main routine to warn if any method 1819 /// remains unimplemented in the class or category @implementation. 1820 void ImplMethodsVsClassMethods(Scope *S, ObjCImplDecl* IMPDecl, 1821 ObjCContainerDecl* IDecl, 1822 bool IncompleteImpl = false); 1823 1824 /// DiagnoseUnimplementedProperties - This routine warns on those properties 1825 /// which must be implemented by this implementation. 1826 void DiagnoseUnimplementedProperties(Scope *S, ObjCImplDecl* IMPDecl, 1827 ObjCContainerDecl *CDecl, 1828 const SelectorSet &InsMap); 1829 1830 /// DefaultSynthesizeProperties - This routine default synthesizes all 1831 /// properties which must be synthesized in class's @implementation. 1832 void DefaultSynthesizeProperties (Scope *S, ObjCImplDecl* IMPDecl, 1833 ObjCInterfaceDecl *IDecl); 1834 1835 /// CollectImmediateProperties - This routine collects all properties in 1836 /// the class and its conforming protocols; but not those it its super class. 1837 void CollectImmediateProperties(ObjCContainerDecl *CDecl, 1838 llvm::DenseMap<IdentifierInfo *, ObjCPropertyDecl*>& PropMap, 1839 llvm::DenseMap<IdentifierInfo *, ObjCPropertyDecl*>& SuperPropMap); 1840 1841 1842 /// LookupPropertyDecl - Looks up a property in the current class and all 1843 /// its protocols. 1844 ObjCPropertyDecl *LookupPropertyDecl(const ObjCContainerDecl *CDecl, 1845 IdentifierInfo *II); 1846 1847 /// Called by ActOnProperty to handle @property declarations in 1848 //// class extensions. 1849 Decl *HandlePropertyInClassExtension(Scope *S, 1850 ObjCCategoryDecl *CDecl, 1851 SourceLocation AtLoc, 1852 FieldDeclarator &FD, 1853 Selector GetterSel, 1854 Selector SetterSel, 1855 const bool isAssign, 1856 const bool isReadWrite, 1857 const unsigned Attributes, 1858 bool *isOverridingProperty, 1859 TypeSourceInfo *T, 1860 tok::ObjCKeywordKind MethodImplKind); 1861 1862 /// Called by ActOnProperty and HandlePropertyInClassExtension to 1863 /// handle creating the ObjcPropertyDecl for a category or @interface. 1864 ObjCPropertyDecl *CreatePropertyDecl(Scope *S, 1865 ObjCContainerDecl *CDecl, 1866 SourceLocation AtLoc, 1867 FieldDeclarator &FD, 1868 Selector GetterSel, 1869 Selector SetterSel, 1870 const bool isAssign, 1871 const bool isReadWrite, 1872 const unsigned Attributes, 1873 TypeSourceInfo *T, 1874 tok::ObjCKeywordKind MethodImplKind, 1875 DeclContext *lexicalDC = 0); 1876 1877 /// AtomicPropertySetterGetterRules - This routine enforces the rule (via 1878 /// warning) when atomic property has one but not the other user-declared 1879 /// setter or getter. 1880 void AtomicPropertySetterGetterRules(ObjCImplDecl* IMPDecl, 1881 ObjCContainerDecl* IDecl); 1882 1883 void DiagnoseOwningPropertyGetterSynthesis(const ObjCImplementationDecl *D); 1884 1885 void DiagnoseDuplicateIvars(ObjCInterfaceDecl *ID, ObjCInterfaceDecl *SID); 1886 1887 enum MethodMatchStrategy { 1888 MMS_loose, 1889 MMS_strict 1890 }; 1891 1892 /// MatchTwoMethodDeclarations - Checks if two methods' type match and returns 1893 /// true, or false, accordingly. 1894 bool MatchTwoMethodDeclarations(const ObjCMethodDecl *Method, 1895 const ObjCMethodDecl *PrevMethod, 1896 MethodMatchStrategy strategy = MMS_strict); 1897 1898 /// MatchAllMethodDeclarations - Check methods declaraed in interface or 1899 /// or protocol against those declared in their implementations. 1900 void MatchAllMethodDeclarations(const SelectorSet &InsMap, 1901 const SelectorSet &ClsMap, 1902 SelectorSet &InsMapSeen, 1903 SelectorSet &ClsMapSeen, 1904 ObjCImplDecl* IMPDecl, 1905 ObjCContainerDecl* IDecl, 1906 bool &IncompleteImpl, 1907 bool ImmediateClass); 1908 1909 /// MatchMethodsInClassAndItsProtocol - Check that any redeclaration of 1910 /// method in protocol in its qualified class match in their type and 1911 /// issue warnings otherwise. 1912 void MatchMethodsInClassAndItsProtocol(const ObjCInterfaceDecl *CDecl); 1913 1914private: 1915 /// AddMethodToGlobalPool - Add an instance or factory method to the global 1916 /// pool. See descriptoin of AddInstanceMethodToGlobalPool. 1917 void AddMethodToGlobalPool(ObjCMethodDecl *Method, bool impl, bool instance); 1918 1919 /// LookupMethodInGlobalPool - Returns the instance or factory method and 1920 /// optionally warns if there are multiple signatures. 1921 ObjCMethodDecl *LookupMethodInGlobalPool(Selector Sel, SourceRange R, 1922 bool receiverIdOrClass, 1923 bool warn, bool instance); 1924 1925public: 1926 /// AddInstanceMethodToGlobalPool - All instance methods in a translation 1927 /// unit are added to a global pool. This allows us to efficiently associate 1928 /// a selector with a method declaraation for purposes of typechecking 1929 /// messages sent to "id" (where the class of the object is unknown). 1930 void AddInstanceMethodToGlobalPool(ObjCMethodDecl *Method, bool impl=false) { 1931 AddMethodToGlobalPool(Method, impl, /*instance*/true); 1932 } 1933 1934 /// AddFactoryMethodToGlobalPool - Same as above, but for factory methods. 1935 void AddFactoryMethodToGlobalPool(ObjCMethodDecl *Method, bool impl=false) { 1936 AddMethodToGlobalPool(Method, impl, /*instance*/false); 1937 } 1938 1939 /// LookupInstanceMethodInGlobalPool - Returns the method and warns if 1940 /// there are multiple signatures. 1941 ObjCMethodDecl *LookupInstanceMethodInGlobalPool(Selector Sel, SourceRange R, 1942 bool receiverIdOrClass=false, 1943 bool warn=true) { 1944 return LookupMethodInGlobalPool(Sel, R, receiverIdOrClass, 1945 warn, /*instance*/true); 1946 } 1947 1948 /// LookupFactoryMethodInGlobalPool - Returns the method and warns if 1949 /// there are multiple signatures. 1950 ObjCMethodDecl *LookupFactoryMethodInGlobalPool(Selector Sel, SourceRange R, 1951 bool receiverIdOrClass=false, 1952 bool warn=true) { 1953 return LookupMethodInGlobalPool(Sel, R, receiverIdOrClass, 1954 warn, /*instance*/false); 1955 } 1956 1957 /// LookupImplementedMethodInGlobalPool - Returns the method which has an 1958 /// implementation. 1959 ObjCMethodDecl *LookupImplementedMethodInGlobalPool(Selector Sel); 1960 1961 /// CollectIvarsToConstructOrDestruct - Collect those ivars which require 1962 /// initialization. 1963 void CollectIvarsToConstructOrDestruct(ObjCInterfaceDecl *OI, 1964 SmallVectorImpl<ObjCIvarDecl*> &Ivars); 1965 1966 //===--------------------------------------------------------------------===// 1967 // Statement Parsing Callbacks: SemaStmt.cpp. 1968public: 1969 class FullExprArg { 1970 public: 1971 FullExprArg(Sema &actions) : E(0) { } 1972 1973 // FIXME: The const_cast here is ugly. RValue references would make this 1974 // much nicer (or we could duplicate a bunch of the move semantics 1975 // emulation code from Ownership.h). 1976 FullExprArg(const FullExprArg& Other) : E(Other.E) {} 1977 1978 ExprResult release() { 1979 return move(E); 1980 } 1981 1982 Expr *get() const { return E; } 1983 1984 Expr *operator->() { 1985 return E; 1986 } 1987 1988 private: 1989 // FIXME: No need to make the entire Sema class a friend when it's just 1990 // Sema::MakeFullExpr that needs access to the constructor below. 1991 friend class Sema; 1992 1993 explicit FullExprArg(Expr *expr) : E(expr) {} 1994 1995 Expr *E; 1996 }; 1997 1998 FullExprArg MakeFullExpr(Expr *Arg) { 1999 return FullExprArg(ActOnFinishFullExpr(Arg).release()); 2000 } 2001 2002 StmtResult ActOnExprStmt(FullExprArg Expr); 2003 2004 StmtResult ActOnNullStmt(SourceLocation SemiLoc, 2005 SourceLocation LeadingEmptyMacroLoc = SourceLocation()); 2006 StmtResult ActOnCompoundStmt(SourceLocation L, SourceLocation R, 2007 MultiStmtArg Elts, 2008 bool isStmtExpr); 2009 StmtResult ActOnDeclStmt(DeclGroupPtrTy Decl, 2010 SourceLocation StartLoc, 2011 SourceLocation EndLoc); 2012 void ActOnForEachDeclStmt(DeclGroupPtrTy Decl); 2013 StmtResult ActOnForEachLValueExpr(Expr *E); 2014 StmtResult ActOnCaseStmt(SourceLocation CaseLoc, Expr *LHSVal, 2015 SourceLocation DotDotDotLoc, Expr *RHSVal, 2016 SourceLocation ColonLoc); 2017 void ActOnCaseStmtBody(Stmt *CaseStmt, Stmt *SubStmt); 2018 2019 StmtResult ActOnDefaultStmt(SourceLocation DefaultLoc, 2020 SourceLocation ColonLoc, 2021 Stmt *SubStmt, Scope *CurScope); 2022 StmtResult ActOnLabelStmt(SourceLocation IdentLoc, LabelDecl *TheDecl, 2023 SourceLocation ColonLoc, Stmt *SubStmt); 2024 2025 StmtResult ActOnIfStmt(SourceLocation IfLoc, 2026 FullExprArg CondVal, Decl *CondVar, 2027 Stmt *ThenVal, 2028 SourceLocation ElseLoc, Stmt *ElseVal); 2029 StmtResult ActOnStartOfSwitchStmt(SourceLocation SwitchLoc, 2030 Expr *Cond, 2031 Decl *CondVar); 2032 StmtResult ActOnFinishSwitchStmt(SourceLocation SwitchLoc, 2033 Stmt *Switch, Stmt *Body); 2034 StmtResult ActOnWhileStmt(SourceLocation WhileLoc, 2035 FullExprArg Cond, 2036 Decl *CondVar, Stmt *Body); 2037 StmtResult ActOnDoStmt(SourceLocation DoLoc, Stmt *Body, 2038 SourceLocation WhileLoc, 2039 SourceLocation CondLParen, Expr *Cond, 2040 SourceLocation CondRParen); 2041 2042 StmtResult ActOnForStmt(SourceLocation ForLoc, 2043 SourceLocation LParenLoc, 2044 Stmt *First, FullExprArg Second, 2045 Decl *SecondVar, 2046 FullExprArg Third, 2047 SourceLocation RParenLoc, 2048 Stmt *Body); 2049 ExprResult ActOnObjCForCollectionOperand(SourceLocation forLoc, 2050 Expr *collection); 2051 StmtResult ActOnObjCForCollectionStmt(SourceLocation ForColLoc, 2052 SourceLocation LParenLoc, 2053 Stmt *First, Expr *Second, 2054 SourceLocation RParenLoc, Stmt *Body); 2055 StmtResult ActOnCXXForRangeStmt(SourceLocation ForLoc, 2056 SourceLocation LParenLoc, Stmt *LoopVar, 2057 SourceLocation ColonLoc, Expr *Collection, 2058 SourceLocation RParenLoc); 2059 StmtResult BuildCXXForRangeStmt(SourceLocation ForLoc, 2060 SourceLocation ColonLoc, 2061 Stmt *RangeDecl, Stmt *BeginEndDecl, 2062 Expr *Cond, Expr *Inc, 2063 Stmt *LoopVarDecl, 2064 SourceLocation RParenLoc); 2065 StmtResult FinishCXXForRangeStmt(Stmt *ForRange, Stmt *Body); 2066 2067 StmtResult ActOnGotoStmt(SourceLocation GotoLoc, 2068 SourceLocation LabelLoc, 2069 LabelDecl *TheDecl); 2070 StmtResult ActOnIndirectGotoStmt(SourceLocation GotoLoc, 2071 SourceLocation StarLoc, 2072 Expr *DestExp); 2073 StmtResult ActOnContinueStmt(SourceLocation ContinueLoc, Scope *CurScope); 2074 StmtResult ActOnBreakStmt(SourceLocation GotoLoc, Scope *CurScope); 2075 2076 const VarDecl *getCopyElisionCandidate(QualType ReturnType, Expr *E, 2077 bool AllowFunctionParameters); 2078 2079 StmtResult ActOnReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp); 2080 StmtResult ActOnBlockReturnStmt(SourceLocation ReturnLoc, Expr *RetValExp); 2081 2082 StmtResult ActOnAsmStmt(SourceLocation AsmLoc, 2083 bool IsSimple, bool IsVolatile, 2084 unsigned NumOutputs, unsigned NumInputs, 2085 IdentifierInfo **Names, 2086 MultiExprArg Constraints, 2087 MultiExprArg Exprs, 2088 Expr *AsmString, 2089 MultiExprArg Clobbers, 2090 SourceLocation RParenLoc, 2091 bool MSAsm = false); 2092 2093 2094 VarDecl *BuildObjCExceptionDecl(TypeSourceInfo *TInfo, QualType ExceptionType, 2095 SourceLocation StartLoc, 2096 SourceLocation IdLoc, IdentifierInfo *Id, 2097 bool Invalid = false); 2098 2099 Decl *ActOnObjCExceptionDecl(Scope *S, Declarator &D); 2100 2101 StmtResult ActOnObjCAtCatchStmt(SourceLocation AtLoc, SourceLocation RParen, 2102 Decl *Parm, Stmt *Body); 2103 2104 StmtResult ActOnObjCAtFinallyStmt(SourceLocation AtLoc, Stmt *Body); 2105 2106 StmtResult ActOnObjCAtTryStmt(SourceLocation AtLoc, Stmt *Try, 2107 MultiStmtArg Catch, Stmt *Finally); 2108 2109 StmtResult BuildObjCAtThrowStmt(SourceLocation AtLoc, Expr *Throw); 2110 StmtResult ActOnObjCAtThrowStmt(SourceLocation AtLoc, Expr *Throw, 2111 Scope *CurScope); 2112 ExprResult ActOnObjCAtSynchronizedOperand(SourceLocation atLoc, 2113 Expr *operand); 2114 StmtResult ActOnObjCAtSynchronizedStmt(SourceLocation AtLoc, 2115 Expr *SynchExpr, 2116 Stmt *SynchBody); 2117 2118 StmtResult ActOnObjCAutoreleasePoolStmt(SourceLocation AtLoc, Stmt *Body); 2119 2120 VarDecl *BuildExceptionDeclaration(Scope *S, TypeSourceInfo *TInfo, 2121 SourceLocation StartLoc, 2122 SourceLocation IdLoc, 2123 IdentifierInfo *Id); 2124 2125 Decl *ActOnExceptionDeclarator(Scope *S, Declarator &D); 2126 2127 StmtResult ActOnCXXCatchBlock(SourceLocation CatchLoc, 2128 Decl *ExDecl, Stmt *HandlerBlock); 2129 StmtResult ActOnCXXTryBlock(SourceLocation TryLoc, Stmt *TryBlock, 2130 MultiStmtArg Handlers); 2131 2132 StmtResult ActOnSEHTryBlock(bool IsCXXTry, // try (true) or __try (false) ? 2133 SourceLocation TryLoc, 2134 Stmt *TryBlock, 2135 Stmt *Handler); 2136 2137 StmtResult ActOnSEHExceptBlock(SourceLocation Loc, 2138 Expr *FilterExpr, 2139 Stmt *Block); 2140 2141 StmtResult ActOnSEHFinallyBlock(SourceLocation Loc, 2142 Stmt *Block); 2143 2144 void DiagnoseReturnInConstructorExceptionHandler(CXXTryStmt *TryBlock); 2145 2146 bool ShouldWarnIfUnusedFileScopedDecl(const DeclaratorDecl *D) const; 2147 2148 /// \brief If it's a file scoped decl that must warn if not used, keep track 2149 /// of it. 2150 void MarkUnusedFileScopedDecl(const DeclaratorDecl *D); 2151 2152 /// DiagnoseUnusedExprResult - If the statement passed in is an expression 2153 /// whose result is unused, warn. 2154 void DiagnoseUnusedExprResult(const Stmt *S); 2155 void DiagnoseUnusedDecl(const NamedDecl *ND); 2156 2157 ParsingDeclState PushParsingDeclaration() { 2158 return DelayedDiagnostics.pushParsingDecl(); 2159 } 2160 void PopParsingDeclaration(ParsingDeclState state, Decl *decl) { 2161 DelayedDiagnostics::popParsingDecl(*this, state, decl); 2162 } 2163 2164 typedef ProcessingContextState ParsingClassState; 2165 ParsingClassState PushParsingClass() { 2166 return DelayedDiagnostics.pushContext(); 2167 } 2168 void PopParsingClass(ParsingClassState state) { 2169 DelayedDiagnostics.popContext(state); 2170 } 2171 2172 void EmitDeprecationWarning(NamedDecl *D, StringRef Message, 2173 SourceLocation Loc, 2174 const ObjCInterfaceDecl *UnknownObjCClass=0); 2175 2176 void HandleDelayedDeprecationCheck(sema::DelayedDiagnostic &DD, Decl *Ctx); 2177 2178 bool makeUnavailableInSystemHeader(SourceLocation loc, 2179 StringRef message); 2180 2181 //===--------------------------------------------------------------------===// 2182 // Expression Parsing Callbacks: SemaExpr.cpp. 2183 2184 bool DiagnoseUseOfDecl(NamedDecl *D, SourceLocation Loc, 2185 const ObjCInterfaceDecl *UnknownObjCClass=0); 2186 std::string getDeletedOrUnavailableSuffix(const FunctionDecl *FD); 2187 bool DiagnosePropertyAccessorMismatch(ObjCPropertyDecl *PD, 2188 ObjCMethodDecl *Getter, 2189 SourceLocation Loc); 2190 void DiagnoseSentinelCalls(NamedDecl *D, SourceLocation Loc, 2191 Expr **Args, unsigned NumArgs); 2192 2193 void PushExpressionEvaluationContext(ExpressionEvaluationContext NewContext); 2194 2195 void PopExpressionEvaluationContext(); 2196 2197 void DiscardCleanupsInEvaluationContext(); 2198 2199 void MarkDeclarationReferenced(SourceLocation Loc, Decl *D); 2200 void MarkDeclarationsReferencedInType(SourceLocation Loc, QualType T); 2201 void MarkDeclarationsReferencedInExpr(Expr *E); 2202 2203 /// \brief Figure out if an expression could be turned into a call. 2204 bool isExprCallable(const Expr &E, QualType &ZeroArgCallReturnTy, 2205 UnresolvedSetImpl &NonTemplateOverloads); 2206 /// \brief Give notes for a set of overloads. 2207 void NoteOverloads(const UnresolvedSetImpl &Overloads, 2208 const SourceLocation FinalNoteLoc); 2209 2210 /// \brief Conditionally issue a diagnostic based on the current 2211 /// evaluation context. 2212 /// 2213 /// \param stmt - If stmt is non-null, delay reporting the diagnostic until 2214 /// the function body is parsed, and then do a basic reachability analysis to 2215 /// determine if the statement is reachable. If it is unreachable, the 2216 /// diagnostic will not be emitted. 2217 bool DiagRuntimeBehavior(SourceLocation Loc, const Stmt *stmt, 2218 const PartialDiagnostic &PD); 2219 2220 // Primary Expressions. 2221 SourceRange getExprRange(Expr *E) const; 2222 2223 ObjCIvarDecl *SynthesizeProvisionalIvar(LookupResult &Lookup, 2224 IdentifierInfo *II, 2225 SourceLocation NameLoc); 2226 2227 ExprResult ActOnIdExpression(Scope *S, CXXScopeSpec &SS, UnqualifiedId &Name, 2228 bool HasTrailingLParen, bool IsAddressOfOperand); 2229 2230 void DecomposeUnqualifiedId(const UnqualifiedId &Id, 2231 TemplateArgumentListInfo &Buffer, 2232 DeclarationNameInfo &NameInfo, 2233 const TemplateArgumentListInfo *&TemplateArgs); 2234 2235 bool DiagnoseEmptyLookup(Scope *S, CXXScopeSpec &SS, LookupResult &R, 2236 CorrectTypoContext CTC = CTC_Unknown); 2237 2238 ExprResult LookupInObjCMethod(LookupResult &R, Scope *S, IdentifierInfo *II, 2239 bool AllowBuiltinCreation=false); 2240 2241 ExprResult ActOnDependentIdExpression(const CXXScopeSpec &SS, 2242 const DeclarationNameInfo &NameInfo, 2243 bool isAddressOfOperand, 2244 const TemplateArgumentListInfo *TemplateArgs); 2245 2246 ExprResult BuildDeclRefExpr(ValueDecl *D, QualType Ty, 2247 ExprValueKind VK, 2248 SourceLocation Loc, 2249 const CXXScopeSpec *SS = 0); 2250 ExprResult BuildDeclRefExpr(ValueDecl *D, QualType Ty, 2251 ExprValueKind VK, 2252 const DeclarationNameInfo &NameInfo, 2253 const CXXScopeSpec *SS = 0); 2254 ExprResult 2255 BuildAnonymousStructUnionMemberReference(const CXXScopeSpec &SS, 2256 SourceLocation nameLoc, 2257 IndirectFieldDecl *indirectField, 2258 Expr *baseObjectExpr = 0, 2259 SourceLocation opLoc = SourceLocation()); 2260 ExprResult BuildPossibleImplicitMemberExpr(const CXXScopeSpec &SS, 2261 LookupResult &R, 2262 const TemplateArgumentListInfo *TemplateArgs); 2263 ExprResult BuildImplicitMemberExpr(const CXXScopeSpec &SS, 2264 LookupResult &R, 2265 const TemplateArgumentListInfo *TemplateArgs, 2266 bool IsDefiniteInstance); 2267 bool UseArgumentDependentLookup(const CXXScopeSpec &SS, 2268 const LookupResult &R, 2269 bool HasTrailingLParen); 2270 2271 ExprResult BuildQualifiedDeclarationNameExpr(CXXScopeSpec &SS, 2272 const DeclarationNameInfo &NameInfo); 2273 ExprResult BuildDependentDeclRefExpr(const CXXScopeSpec &SS, 2274 const DeclarationNameInfo &NameInfo, 2275 const TemplateArgumentListInfo *TemplateArgs); 2276 2277 ExprResult BuildDeclarationNameExpr(const CXXScopeSpec &SS, 2278 LookupResult &R, 2279 bool ADL); 2280 ExprResult BuildDeclarationNameExpr(const CXXScopeSpec &SS, 2281 const DeclarationNameInfo &NameInfo, 2282 NamedDecl *D); 2283 2284 ExprResult ActOnPredefinedExpr(SourceLocation Loc, tok::TokenKind Kind); 2285 ExprResult ActOnNumericConstant(const Token &); 2286 ExprResult ActOnCharacterConstant(const Token &); 2287 ExprResult ActOnParenExpr(SourceLocation L, SourceLocation R, Expr *Val); 2288 ExprResult ActOnParenOrParenListExpr(SourceLocation L, 2289 SourceLocation R, 2290 MultiExprArg Val); 2291 2292 /// ActOnStringLiteral - The specified tokens were lexed as pasted string 2293 /// fragments (e.g. "foo" "bar" L"baz"). 2294 ExprResult ActOnStringLiteral(const Token *Toks, unsigned NumToks); 2295 2296 ExprResult ActOnGenericSelectionExpr(SourceLocation KeyLoc, 2297 SourceLocation DefaultLoc, 2298 SourceLocation RParenLoc, 2299 Expr *ControllingExpr, 2300 MultiTypeArg Types, 2301 MultiExprArg Exprs); 2302 ExprResult CreateGenericSelectionExpr(SourceLocation KeyLoc, 2303 SourceLocation DefaultLoc, 2304 SourceLocation RParenLoc, 2305 Expr *ControllingExpr, 2306 TypeSourceInfo **Types, 2307 Expr **Exprs, 2308 unsigned NumAssocs); 2309 2310 // Binary/Unary Operators. 'Tok' is the token for the operator. 2311 ExprResult CreateBuiltinUnaryOp(SourceLocation OpLoc, UnaryOperatorKind Opc, 2312 Expr *InputArg); 2313 ExprResult BuildUnaryOp(Scope *S, SourceLocation OpLoc, 2314 UnaryOperatorKind Opc, Expr *input); 2315 ExprResult ActOnUnaryOp(Scope *S, SourceLocation OpLoc, 2316 tok::TokenKind Op, Expr *Input); 2317 2318 ExprResult CreateUnaryExprOrTypeTraitExpr(TypeSourceInfo *T, 2319 SourceLocation OpLoc, 2320 UnaryExprOrTypeTrait ExprKind, 2321 SourceRange R); 2322 ExprResult CreateUnaryExprOrTypeTraitExpr(Expr *E, SourceLocation OpLoc, 2323 UnaryExprOrTypeTrait ExprKind); 2324 ExprResult 2325 ActOnUnaryExprOrTypeTraitExpr(SourceLocation OpLoc, 2326 UnaryExprOrTypeTrait ExprKind, 2327 bool isType, void *TyOrEx, 2328 const SourceRange &ArgRange); 2329 2330 ExprResult CheckPlaceholderExpr(Expr *E); 2331 bool CheckVecStepExpr(Expr *E); 2332 2333 bool CheckUnaryExprOrTypeTraitOperand(Expr *E, UnaryExprOrTypeTrait ExprKind); 2334 bool CheckUnaryExprOrTypeTraitOperand(QualType type, SourceLocation OpLoc, 2335 SourceRange R, 2336 UnaryExprOrTypeTrait ExprKind); 2337 ExprResult ActOnSizeofParameterPackExpr(Scope *S, 2338 SourceLocation OpLoc, 2339 IdentifierInfo &Name, 2340 SourceLocation NameLoc, 2341 SourceLocation RParenLoc); 2342 ExprResult ActOnPostfixUnaryOp(Scope *S, SourceLocation OpLoc, 2343 tok::TokenKind Kind, Expr *Input); 2344 2345 ExprResult ActOnArraySubscriptExpr(Scope *S, Expr *Base, SourceLocation LLoc, 2346 Expr *Idx, SourceLocation RLoc); 2347 ExprResult CreateBuiltinArraySubscriptExpr(Expr *Base, SourceLocation LLoc, 2348 Expr *Idx, SourceLocation RLoc); 2349 2350 ExprResult BuildMemberReferenceExpr(Expr *Base, QualType BaseType, 2351 SourceLocation OpLoc, bool IsArrow, 2352 CXXScopeSpec &SS, 2353 NamedDecl *FirstQualifierInScope, 2354 const DeclarationNameInfo &NameInfo, 2355 const TemplateArgumentListInfo *TemplateArgs); 2356 2357 ExprResult BuildMemberReferenceExpr(Expr *Base, QualType BaseType, 2358 SourceLocation OpLoc, bool IsArrow, 2359 const CXXScopeSpec &SS, 2360 NamedDecl *FirstQualifierInScope, 2361 LookupResult &R, 2362 const TemplateArgumentListInfo *TemplateArgs, 2363 bool SuppressQualifierCheck = false); 2364 2365 ExprResult LookupMemberExpr(LookupResult &R, ExprResult &Base, 2366 bool &IsArrow, SourceLocation OpLoc, 2367 CXXScopeSpec &SS, 2368 Decl *ObjCImpDecl, 2369 bool HasTemplateArgs); 2370 2371 bool CheckQualifiedMemberReference(Expr *BaseExpr, QualType BaseType, 2372 const CXXScopeSpec &SS, 2373 const LookupResult &R); 2374 2375 ExprResult ActOnDependentMemberExpr(Expr *Base, QualType BaseType, 2376 bool IsArrow, SourceLocation OpLoc, 2377 const CXXScopeSpec &SS, 2378 NamedDecl *FirstQualifierInScope, 2379 const DeclarationNameInfo &NameInfo, 2380 const TemplateArgumentListInfo *TemplateArgs); 2381 2382 ExprResult ActOnMemberAccessExpr(Scope *S, Expr *Base, 2383 SourceLocation OpLoc, 2384 tok::TokenKind OpKind, 2385 CXXScopeSpec &SS, 2386 UnqualifiedId &Member, 2387 Decl *ObjCImpDecl, 2388 bool HasTrailingLParen); 2389 2390 void ActOnDefaultCtorInitializers(Decl *CDtorDecl); 2391 bool ConvertArgumentsForCall(CallExpr *Call, Expr *Fn, 2392 FunctionDecl *FDecl, 2393 const FunctionProtoType *Proto, 2394 Expr **Args, unsigned NumArgs, 2395 SourceLocation RParenLoc); 2396 2397 /// ActOnCallExpr - Handle a call to Fn with the specified array of arguments. 2398 /// This provides the location of the left/right parens and a list of comma 2399 /// locations. 2400 ExprResult ActOnCallExpr(Scope *S, Expr *Fn, SourceLocation LParenLoc, 2401 MultiExprArg Args, SourceLocation RParenLoc, 2402 Expr *ExecConfig = 0); 2403 ExprResult BuildResolvedCallExpr(Expr *Fn, NamedDecl *NDecl, 2404 SourceLocation LParenLoc, 2405 Expr **Args, unsigned NumArgs, 2406 SourceLocation RParenLoc, 2407 Expr *ExecConfig = 0); 2408 2409 ExprResult ActOnCUDAExecConfigExpr(Scope *S, SourceLocation LLLLoc, 2410 MultiExprArg ExecConfig, SourceLocation GGGLoc); 2411 2412 ExprResult ActOnCastExpr(Scope *S, SourceLocation LParenLoc, 2413 Declarator &D, ParsedType &Ty, 2414 SourceLocation RParenLoc, Expr *Op); 2415 ExprResult BuildCStyleCastExpr(SourceLocation LParenLoc, 2416 TypeSourceInfo *Ty, 2417 SourceLocation RParenLoc, 2418 Expr *Op); 2419 2420 /// \brief Build an altivec or OpenCL literal. 2421 ExprResult BuildVectorLiteral(SourceLocation LParenLoc, 2422 SourceLocation RParenLoc, Expr *E, 2423 TypeSourceInfo *TInfo); 2424 2425 ExprResult MaybeConvertParenListExprToParenExpr(Scope *S, Expr *ME); 2426 2427 ExprResult ActOnCompoundLiteral(SourceLocation LParenLoc, 2428 ParsedType Ty, 2429 SourceLocation RParenLoc, 2430 Expr *Op); 2431 2432 ExprResult BuildCompoundLiteralExpr(SourceLocation LParenLoc, 2433 TypeSourceInfo *TInfo, 2434 SourceLocation RParenLoc, 2435 Expr *InitExpr); 2436 2437 ExprResult ActOnInitList(SourceLocation LParenLoc, 2438 MultiExprArg InitList, 2439 SourceLocation RParenLoc); 2440 2441 ExprResult ActOnDesignatedInitializer(Designation &Desig, 2442 SourceLocation Loc, 2443 bool GNUSyntax, 2444 ExprResult Init); 2445 2446 ExprResult ActOnBinOp(Scope *S, SourceLocation TokLoc, 2447 tok::TokenKind Kind, Expr *LHS, Expr *RHS); 2448 ExprResult BuildBinOp(Scope *S, SourceLocation OpLoc, 2449 BinaryOperatorKind Opc, Expr *lhs, Expr *rhs); 2450 ExprResult CreateBuiltinBinOp(SourceLocation TokLoc, 2451 BinaryOperatorKind Opc, Expr *lhs, Expr *rhs); 2452 2453 /// ActOnConditionalOp - Parse a ?: operation. Note that 'LHS' may be null 2454 /// in the case of a the GNU conditional expr extension. 2455 ExprResult ActOnConditionalOp(SourceLocation QuestionLoc, 2456 SourceLocation ColonLoc, 2457 Expr *Cond, Expr *LHS, Expr *RHS); 2458 2459 /// ActOnAddrLabel - Parse the GNU address of label extension: "&&foo". 2460 ExprResult ActOnAddrLabel(SourceLocation OpLoc, SourceLocation LabLoc, 2461 LabelDecl *LD); 2462 2463 ExprResult ActOnStmtExpr(SourceLocation LPLoc, Stmt *SubStmt, 2464 SourceLocation RPLoc); // "({..})" 2465 2466 // __builtin_offsetof(type, identifier(.identifier|[expr])*) 2467 struct OffsetOfComponent { 2468 SourceLocation LocStart, LocEnd; 2469 bool isBrackets; // true if [expr], false if .ident 2470 union { 2471 IdentifierInfo *IdentInfo; 2472 ExprTy *E; 2473 } U; 2474 }; 2475 2476 /// __builtin_offsetof(type, a.b[123][456].c) 2477 ExprResult BuildBuiltinOffsetOf(SourceLocation BuiltinLoc, 2478 TypeSourceInfo *TInfo, 2479 OffsetOfComponent *CompPtr, 2480 unsigned NumComponents, 2481 SourceLocation RParenLoc); 2482 ExprResult ActOnBuiltinOffsetOf(Scope *S, 2483 SourceLocation BuiltinLoc, 2484 SourceLocation TypeLoc, 2485 ParsedType Arg1, 2486 OffsetOfComponent *CompPtr, 2487 unsigned NumComponents, 2488 SourceLocation RParenLoc); 2489 2490 // __builtin_choose_expr(constExpr, expr1, expr2) 2491 ExprResult ActOnChooseExpr(SourceLocation BuiltinLoc, 2492 Expr *cond, Expr *expr1, 2493 Expr *expr2, SourceLocation RPLoc); 2494 2495 // __builtin_va_arg(expr, type) 2496 ExprResult ActOnVAArg(SourceLocation BuiltinLoc, 2497 Expr *expr, ParsedType type, 2498 SourceLocation RPLoc); 2499 ExprResult BuildVAArgExpr(SourceLocation BuiltinLoc, 2500 Expr *expr, TypeSourceInfo *TInfo, 2501 SourceLocation RPLoc); 2502 2503 // __null 2504 ExprResult ActOnGNUNullExpr(SourceLocation TokenLoc); 2505 2506 bool CheckCaseExpression(Expr *expr); 2507 2508 bool CheckMicrosoftIfExistsSymbol(CXXScopeSpec &SS, UnqualifiedId &Name); 2509 2510 //===------------------------- "Block" Extension ------------------------===// 2511 2512 /// ActOnBlockStart - This callback is invoked when a block literal is 2513 /// started. 2514 void ActOnBlockStart(SourceLocation CaretLoc, Scope *CurScope); 2515 2516 /// ActOnBlockArguments - This callback allows processing of block arguments. 2517 /// If there are no arguments, this is still invoked. 2518 void ActOnBlockArguments(Declarator &ParamInfo, Scope *CurScope); 2519 2520 /// ActOnBlockError - If there is an error parsing a block, this callback 2521 /// is invoked to pop the information about the block from the action impl. 2522 void ActOnBlockError(SourceLocation CaretLoc, Scope *CurScope); 2523 2524 /// ActOnBlockStmtExpr - This is called when the body of a block statement 2525 /// literal was successfully completed. ^(int x){...} 2526 ExprResult ActOnBlockStmtExpr(SourceLocation CaretLoc, 2527 Stmt *Body, Scope *CurScope); 2528 2529 //===---------------------------- OpenCL Features -----------------------===// 2530 2531 /// __builtin_astype(...) 2532 ExprResult ActOnAsTypeExpr(Expr *expr, ParsedType DestTy, 2533 SourceLocation BuiltinLoc, 2534 SourceLocation RParenLoc); 2535 2536 //===---------------------------- C++ Features --------------------------===// 2537 2538 // Act on C++ namespaces 2539 Decl *ActOnStartNamespaceDef(Scope *S, SourceLocation InlineLoc, 2540 SourceLocation NamespaceLoc, 2541 SourceLocation IdentLoc, 2542 IdentifierInfo *Ident, 2543 SourceLocation LBrace, 2544 AttributeList *AttrList); 2545 void ActOnFinishNamespaceDef(Decl *Dcl, SourceLocation RBrace); 2546 2547 NamespaceDecl *getStdNamespace() const; 2548 NamespaceDecl *getOrCreateStdNamespace(); 2549 2550 CXXRecordDecl *getStdBadAlloc() const; 2551 2552 Decl *ActOnUsingDirective(Scope *CurScope, 2553 SourceLocation UsingLoc, 2554 SourceLocation NamespcLoc, 2555 CXXScopeSpec &SS, 2556 SourceLocation IdentLoc, 2557 IdentifierInfo *NamespcName, 2558 AttributeList *AttrList); 2559 2560 void PushUsingDirective(Scope *S, UsingDirectiveDecl *UDir); 2561 2562 Decl *ActOnNamespaceAliasDef(Scope *CurScope, 2563 SourceLocation NamespaceLoc, 2564 SourceLocation AliasLoc, 2565 IdentifierInfo *Alias, 2566 CXXScopeSpec &SS, 2567 SourceLocation IdentLoc, 2568 IdentifierInfo *Ident); 2569 2570 void HideUsingShadowDecl(Scope *S, UsingShadowDecl *Shadow); 2571 bool CheckUsingShadowDecl(UsingDecl *UD, NamedDecl *Target, 2572 const LookupResult &PreviousDecls); 2573 UsingShadowDecl *BuildUsingShadowDecl(Scope *S, UsingDecl *UD, 2574 NamedDecl *Target); 2575 2576 bool CheckUsingDeclRedeclaration(SourceLocation UsingLoc, 2577 bool isTypeName, 2578 const CXXScopeSpec &SS, 2579 SourceLocation NameLoc, 2580 const LookupResult &Previous); 2581 bool CheckUsingDeclQualifier(SourceLocation UsingLoc, 2582 const CXXScopeSpec &SS, 2583 SourceLocation NameLoc); 2584 2585 NamedDecl *BuildUsingDeclaration(Scope *S, AccessSpecifier AS, 2586 SourceLocation UsingLoc, 2587 CXXScopeSpec &SS, 2588 const DeclarationNameInfo &NameInfo, 2589 AttributeList *AttrList, 2590 bool IsInstantiation, 2591 bool IsTypeName, 2592 SourceLocation TypenameLoc); 2593 2594 bool CheckInheritedConstructorUsingDecl(UsingDecl *UD); 2595 2596 Decl *ActOnUsingDeclaration(Scope *CurScope, 2597 AccessSpecifier AS, 2598 bool HasUsingKeyword, 2599 SourceLocation UsingLoc, 2600 CXXScopeSpec &SS, 2601 UnqualifiedId &Name, 2602 AttributeList *AttrList, 2603 bool IsTypeName, 2604 SourceLocation TypenameLoc); 2605 Decl *ActOnAliasDeclaration(Scope *CurScope, 2606 AccessSpecifier AS, 2607 MultiTemplateParamsArg TemplateParams, 2608 SourceLocation UsingLoc, 2609 UnqualifiedId &Name, 2610 TypeResult Type); 2611 2612 /// AddCXXDirectInitializerToDecl - This action is called immediately after 2613 /// ActOnDeclarator, when a C++ direct initializer is present. 2614 /// e.g: "int x(1);" 2615 void AddCXXDirectInitializerToDecl(Decl *Dcl, 2616 SourceLocation LParenLoc, 2617 MultiExprArg Exprs, 2618 SourceLocation RParenLoc, 2619 bool TypeMayContainAuto); 2620 2621 /// InitializeVarWithConstructor - Creates an CXXConstructExpr 2622 /// and sets it as the initializer for the the passed in VarDecl. 2623 bool InitializeVarWithConstructor(VarDecl *VD, 2624 CXXConstructorDecl *Constructor, 2625 MultiExprArg Exprs); 2626 2627 /// BuildCXXConstructExpr - Creates a complete call to a constructor, 2628 /// including handling of its default argument expressions. 2629 /// 2630 /// \param ConstructKind - a CXXConstructExpr::ConstructionKind 2631 ExprResult 2632 BuildCXXConstructExpr(SourceLocation ConstructLoc, QualType DeclInitType, 2633 CXXConstructorDecl *Constructor, MultiExprArg Exprs, 2634 bool RequiresZeroInit, unsigned ConstructKind, 2635 SourceRange ParenRange); 2636 2637 // FIXME: Can re remove this and have the above BuildCXXConstructExpr check if 2638 // the constructor can be elidable? 2639 ExprResult 2640 BuildCXXConstructExpr(SourceLocation ConstructLoc, QualType DeclInitType, 2641 CXXConstructorDecl *Constructor, bool Elidable, 2642 MultiExprArg Exprs, bool RequiresZeroInit, 2643 unsigned ConstructKind, 2644 SourceRange ParenRange); 2645 2646 /// BuildCXXDefaultArgExpr - Creates a CXXDefaultArgExpr, instantiating 2647 /// the default expr if needed. 2648 ExprResult BuildCXXDefaultArgExpr(SourceLocation CallLoc, 2649 FunctionDecl *FD, 2650 ParmVarDecl *Param); 2651 2652 /// FinalizeVarWithDestructor - Prepare for calling destructor on the 2653 /// constructed variable. 2654 void FinalizeVarWithDestructor(VarDecl *VD, const RecordType *DeclInitType); 2655 2656 /// \brief Helper class that collects exception specifications for 2657 /// implicitly-declared special member functions. 2658 class ImplicitExceptionSpecification { 2659 // Pointer to allow copying 2660 ASTContext *Context; 2661 // We order exception specifications thus: 2662 // noexcept is the most restrictive, but is only used in C++0x. 2663 // throw() comes next. 2664 // Then a throw(collected exceptions) 2665 // Finally no specification. 2666 // throw(...) is used instead if any called function uses it. 2667 // 2668 // If this exception specification cannot be known yet (for instance, 2669 // because this is the exception specification for a defaulted default 2670 // constructor and we haven't finished parsing the deferred parts of the 2671 // class yet), the C++0x standard does not specify how to behave. We 2672 // record this as an 'unknown' exception specification, which overrules 2673 // any other specification (even 'none', to keep this rule simple). 2674 ExceptionSpecificationType ComputedEST; 2675 llvm::SmallPtrSet<CanQualType, 4> ExceptionsSeen; 2676 SmallVector<QualType, 4> Exceptions; 2677 2678 void ClearExceptions() { 2679 ExceptionsSeen.clear(); 2680 Exceptions.clear(); 2681 } 2682 2683 public: 2684 explicit ImplicitExceptionSpecification(ASTContext &Context) 2685 : Context(&Context), ComputedEST(EST_BasicNoexcept) { 2686 if (!Context.getLangOptions().CPlusPlus0x) 2687 ComputedEST = EST_DynamicNone; 2688 } 2689 2690 /// \brief Get the computed exception specification type. 2691 ExceptionSpecificationType getExceptionSpecType() const { 2692 assert(ComputedEST != EST_ComputedNoexcept && 2693 "noexcept(expr) should not be a possible result"); 2694 return ComputedEST; 2695 } 2696 2697 /// \brief The number of exceptions in the exception specification. 2698 unsigned size() const { return Exceptions.size(); } 2699 2700 /// \brief The set of exceptions in the exception specification. 2701 const QualType *data() const { return Exceptions.data(); } 2702 2703 /// \brief Integrate another called method into the collected data. 2704 void CalledDecl(CXXMethodDecl *Method); 2705 2706 /// \brief Integrate an invoked expression into the collected data. 2707 void CalledExpr(Expr *E); 2708 2709 /// \brief Specify that the exception specification can't be detemined yet. 2710 void SetDelayed() { 2711 ClearExceptions(); 2712 ComputedEST = EST_Delayed; 2713 } 2714 2715 FunctionProtoType::ExtProtoInfo getEPI() const { 2716 FunctionProtoType::ExtProtoInfo EPI; 2717 EPI.ExceptionSpecType = getExceptionSpecType(); 2718 EPI.NumExceptions = size(); 2719 EPI.Exceptions = data(); 2720 return EPI; 2721 } 2722 }; 2723 2724 /// \brief Determine what sort of exception specification a defaulted 2725 /// copy constructor of a class will have. 2726 ImplicitExceptionSpecification 2727 ComputeDefaultedDefaultCtorExceptionSpec(CXXRecordDecl *ClassDecl); 2728 2729 /// \brief Determine what sort of exception specification a defaulted 2730 /// default constructor of a class will have, and whether the parameter 2731 /// will be const. 2732 std::pair<ImplicitExceptionSpecification, bool> 2733 ComputeDefaultedCopyCtorExceptionSpecAndConst(CXXRecordDecl *ClassDecl); 2734 2735 /// \brief Determine what sort of exception specification a defautled 2736 /// copy assignment operator of a class will have, and whether the 2737 /// parameter will be const. 2738 std::pair<ImplicitExceptionSpecification, bool> 2739 ComputeDefaultedCopyAssignmentExceptionSpecAndConst(CXXRecordDecl *ClassDecl); 2740 2741 /// \brief Determine what sort of exception specification a defaulted 2742 /// destructor of a class will have. 2743 ImplicitExceptionSpecification 2744 ComputeDefaultedDtorExceptionSpec(CXXRecordDecl *ClassDecl); 2745 2746 /// \brief Determine if a defaulted default constructor ought to be 2747 /// deleted. 2748 bool ShouldDeleteDefaultConstructor(CXXConstructorDecl *CD); 2749 2750 /// \brief Determine if a defaulted copy constructor ought to be 2751 /// deleted. 2752 bool ShouldDeleteCopyConstructor(CXXConstructorDecl *CD); 2753 2754 /// \brief Determine if a defaulted copy assignment operator ought to be 2755 /// deleted. 2756 bool ShouldDeleteCopyAssignmentOperator(CXXMethodDecl *MD); 2757 2758 /// \brief Determine if a defaulted destructor ought to be deleted. 2759 bool ShouldDeleteDestructor(CXXDestructorDecl *DD); 2760 2761 /// \brief Declare the implicit default constructor for the given class. 2762 /// 2763 /// \param ClassDecl The class declaration into which the implicit 2764 /// default constructor will be added. 2765 /// 2766 /// \returns The implicitly-declared default constructor. 2767 CXXConstructorDecl *DeclareImplicitDefaultConstructor( 2768 CXXRecordDecl *ClassDecl); 2769 2770 /// DefineImplicitDefaultConstructor - Checks for feasibility of 2771 /// defining this constructor as the default constructor. 2772 void DefineImplicitDefaultConstructor(SourceLocation CurrentLocation, 2773 CXXConstructorDecl *Constructor); 2774 2775 /// \brief Declare the implicit destructor for the given class. 2776 /// 2777 /// \param ClassDecl The class declaration into which the implicit 2778 /// destructor will be added. 2779 /// 2780 /// \returns The implicitly-declared destructor. 2781 CXXDestructorDecl *DeclareImplicitDestructor(CXXRecordDecl *ClassDecl); 2782 2783 /// DefineImplicitDestructor - Checks for feasibility of 2784 /// defining this destructor as the default destructor. 2785 void DefineImplicitDestructor(SourceLocation CurrentLocation, 2786 CXXDestructorDecl *Destructor); 2787 2788 /// \brief Build an exception spec for destructors that don't have one. 2789 /// 2790 /// C++11 says that user-defined destructors with no exception spec get one 2791 /// that looks as if the destructor was implicitly declared. 2792 void AdjustDestructorExceptionSpec(CXXRecordDecl *ClassDecl, 2793 CXXDestructorDecl *Destructor); 2794 2795 /// \brief Declare all inherited constructors for the given class. 2796 /// 2797 /// \param ClassDecl The class declaration into which the inherited 2798 /// constructors will be added. 2799 void DeclareInheritedConstructors(CXXRecordDecl *ClassDecl); 2800 2801 /// \brief Declare the implicit copy constructor for the given class. 2802 /// 2803 /// \param S The scope of the class, which may be NULL if this is a 2804 /// template instantiation. 2805 /// 2806 /// \param ClassDecl The class declaration into which the implicit 2807 /// copy constructor will be added. 2808 /// 2809 /// \returns The implicitly-declared copy constructor. 2810 CXXConstructorDecl *DeclareImplicitCopyConstructor(CXXRecordDecl *ClassDecl); 2811 2812 /// DefineImplicitCopyConstructor - Checks for feasibility of 2813 /// defining this constructor as the copy constructor. 2814 void DefineImplicitCopyConstructor(SourceLocation CurrentLocation, 2815 CXXConstructorDecl *Constructor); 2816 2817 /// \brief Declare the implicit copy assignment operator for the given class. 2818 /// 2819 /// \param S The scope of the class, which may be NULL if this is a 2820 /// template instantiation. 2821 /// 2822 /// \param ClassDecl The class declaration into which the implicit 2823 /// copy-assignment operator will be added. 2824 /// 2825 /// \returns The implicitly-declared copy assignment operator. 2826 CXXMethodDecl *DeclareImplicitCopyAssignment(CXXRecordDecl *ClassDecl); 2827 2828 /// \brief Defined an implicitly-declared copy assignment operator. 2829 void DefineImplicitCopyAssignment(SourceLocation CurrentLocation, 2830 CXXMethodDecl *MethodDecl); 2831 2832 /// \brief Force the declaration of any implicitly-declared members of this 2833 /// class. 2834 void ForceDeclarationOfImplicitMembers(CXXRecordDecl *Class); 2835 2836 /// MaybeBindToTemporary - If the passed in expression has a record type with 2837 /// a non-trivial destructor, this will return CXXBindTemporaryExpr. Otherwise 2838 /// it simply returns the passed in expression. 2839 ExprResult MaybeBindToTemporary(Expr *E); 2840 2841 bool CompleteConstructorCall(CXXConstructorDecl *Constructor, 2842 MultiExprArg ArgsPtr, 2843 SourceLocation Loc, 2844 ASTOwningVector<Expr*> &ConvertedArgs); 2845 2846 ParsedType getDestructorName(SourceLocation TildeLoc, 2847 IdentifierInfo &II, SourceLocation NameLoc, 2848 Scope *S, CXXScopeSpec &SS, 2849 ParsedType ObjectType, 2850 bool EnteringContext); 2851 2852 // Checks that reinterpret casts don't have undefined behavior. 2853 void CheckCompatibleReinterpretCast(QualType SrcType, QualType DestType, 2854 bool IsDereference, SourceRange Range); 2855 2856 /// ActOnCXXNamedCast - Parse {dynamic,static,reinterpret,const}_cast's. 2857 ExprResult ActOnCXXNamedCast(SourceLocation OpLoc, 2858 tok::TokenKind Kind, 2859 SourceLocation LAngleBracketLoc, 2860 Declarator &D, 2861 SourceLocation RAngleBracketLoc, 2862 SourceLocation LParenLoc, 2863 Expr *E, 2864 SourceLocation RParenLoc); 2865 2866 ExprResult BuildCXXNamedCast(SourceLocation OpLoc, 2867 tok::TokenKind Kind, 2868 TypeSourceInfo *Ty, 2869 Expr *E, 2870 SourceRange AngleBrackets, 2871 SourceRange Parens); 2872 2873 ExprResult BuildCXXTypeId(QualType TypeInfoType, 2874 SourceLocation TypeidLoc, 2875 TypeSourceInfo *Operand, 2876 SourceLocation RParenLoc); 2877 ExprResult BuildCXXTypeId(QualType TypeInfoType, 2878 SourceLocation TypeidLoc, 2879 Expr *Operand, 2880 SourceLocation RParenLoc); 2881 2882 /// ActOnCXXTypeid - Parse typeid( something ). 2883 ExprResult ActOnCXXTypeid(SourceLocation OpLoc, 2884 SourceLocation LParenLoc, bool isType, 2885 void *TyOrExpr, 2886 SourceLocation RParenLoc); 2887 2888 ExprResult BuildCXXUuidof(QualType TypeInfoType, 2889 SourceLocation TypeidLoc, 2890 TypeSourceInfo *Operand, 2891 SourceLocation RParenLoc); 2892 ExprResult BuildCXXUuidof(QualType TypeInfoType, 2893 SourceLocation TypeidLoc, 2894 Expr *Operand, 2895 SourceLocation RParenLoc); 2896 2897 /// ActOnCXXUuidof - Parse __uuidof( something ). 2898 ExprResult ActOnCXXUuidof(SourceLocation OpLoc, 2899 SourceLocation LParenLoc, bool isType, 2900 void *TyOrExpr, 2901 SourceLocation RParenLoc); 2902 2903 2904 //// ActOnCXXThis - Parse 'this' pointer. 2905 ExprResult ActOnCXXThis(SourceLocation loc); 2906 2907 /// getAndCaptureCurrentThisType - Try to capture a 'this' pointer. Returns 2908 /// the type of the 'this' pointer, or a null type if this is not possible. 2909 QualType getAndCaptureCurrentThisType(); 2910 2911 /// ActOnCXXBoolLiteral - Parse {true,false} literals. 2912 ExprResult ActOnCXXBoolLiteral(SourceLocation OpLoc, tok::TokenKind Kind); 2913 2914 /// ActOnCXXNullPtrLiteral - Parse 'nullptr'. 2915 ExprResult ActOnCXXNullPtrLiteral(SourceLocation Loc); 2916 2917 //// ActOnCXXThrow - Parse throw expressions. 2918 ExprResult ActOnCXXThrow(Scope *S, SourceLocation OpLoc, Expr *expr); 2919 ExprResult BuildCXXThrow(SourceLocation OpLoc, Expr *Ex, 2920 bool IsThrownVarInScope); 2921 ExprResult CheckCXXThrowOperand(SourceLocation ThrowLoc, Expr *E, 2922 bool IsThrownVarInScope); 2923 2924 /// ActOnCXXTypeConstructExpr - Parse construction of a specified type. 2925 /// Can be interpreted either as function-style casting ("int(x)") 2926 /// or class type construction ("ClassType(x,y,z)") 2927 /// or creation of a value-initialized type ("int()"). 2928 ExprResult ActOnCXXTypeConstructExpr(ParsedType TypeRep, 2929 SourceLocation LParenLoc, 2930 MultiExprArg Exprs, 2931 SourceLocation RParenLoc); 2932 2933 ExprResult BuildCXXTypeConstructExpr(TypeSourceInfo *Type, 2934 SourceLocation LParenLoc, 2935 MultiExprArg Exprs, 2936 SourceLocation RParenLoc); 2937 2938 /// ActOnCXXNew - Parsed a C++ 'new' expression. 2939 ExprResult ActOnCXXNew(SourceLocation StartLoc, bool UseGlobal, 2940 SourceLocation PlacementLParen, 2941 MultiExprArg PlacementArgs, 2942 SourceLocation PlacementRParen, 2943 SourceRange TypeIdParens, Declarator &D, 2944 SourceLocation ConstructorLParen, 2945 MultiExprArg ConstructorArgs, 2946 SourceLocation ConstructorRParen); 2947 ExprResult BuildCXXNew(SourceLocation StartLoc, bool UseGlobal, 2948 SourceLocation PlacementLParen, 2949 MultiExprArg PlacementArgs, 2950 SourceLocation PlacementRParen, 2951 SourceRange TypeIdParens, 2952 QualType AllocType, 2953 TypeSourceInfo *AllocTypeInfo, 2954 Expr *ArraySize, 2955 SourceLocation ConstructorLParen, 2956 MultiExprArg ConstructorArgs, 2957 SourceLocation ConstructorRParen, 2958 bool TypeMayContainAuto = true); 2959 2960 bool CheckAllocatedType(QualType AllocType, SourceLocation Loc, 2961 SourceRange R); 2962 bool FindAllocationFunctions(SourceLocation StartLoc, SourceRange Range, 2963 bool UseGlobal, QualType AllocType, bool IsArray, 2964 Expr **PlaceArgs, unsigned NumPlaceArgs, 2965 FunctionDecl *&OperatorNew, 2966 FunctionDecl *&OperatorDelete); 2967 bool FindAllocationOverload(SourceLocation StartLoc, SourceRange Range, 2968 DeclarationName Name, Expr** Args, 2969 unsigned NumArgs, DeclContext *Ctx, 2970 bool AllowMissing, FunctionDecl *&Operator, 2971 bool Diagnose = true); 2972 void DeclareGlobalNewDelete(); 2973 void DeclareGlobalAllocationFunction(DeclarationName Name, QualType Return, 2974 QualType Argument, 2975 bool addMallocAttr = false); 2976 2977 bool FindDeallocationFunction(SourceLocation StartLoc, CXXRecordDecl *RD, 2978 DeclarationName Name, FunctionDecl* &Operator, 2979 bool Diagnose = true); 2980 2981 /// ActOnCXXDelete - Parsed a C++ 'delete' expression 2982 ExprResult ActOnCXXDelete(SourceLocation StartLoc, 2983 bool UseGlobal, bool ArrayForm, 2984 Expr *Operand); 2985 2986 DeclResult ActOnCXXConditionDeclaration(Scope *S, Declarator &D); 2987 ExprResult CheckConditionVariable(VarDecl *ConditionVar, 2988 SourceLocation StmtLoc, 2989 bool ConvertToBoolean); 2990 2991 ExprResult ActOnNoexceptExpr(SourceLocation KeyLoc, SourceLocation LParen, 2992 Expr *Operand, SourceLocation RParen); 2993 ExprResult BuildCXXNoexceptExpr(SourceLocation KeyLoc, Expr *Operand, 2994 SourceLocation RParen); 2995 2996 /// ActOnUnaryTypeTrait - Parsed one of the unary type trait support 2997 /// pseudo-functions. 2998 ExprResult ActOnUnaryTypeTrait(UnaryTypeTrait OTT, 2999 SourceLocation KWLoc, 3000 ParsedType Ty, 3001 SourceLocation RParen); 3002 3003 ExprResult BuildUnaryTypeTrait(UnaryTypeTrait OTT, 3004 SourceLocation KWLoc, 3005 TypeSourceInfo *T, 3006 SourceLocation RParen); 3007 3008 /// ActOnBinaryTypeTrait - Parsed one of the bianry type trait support 3009 /// pseudo-functions. 3010 ExprResult ActOnBinaryTypeTrait(BinaryTypeTrait OTT, 3011 SourceLocation KWLoc, 3012 ParsedType LhsTy, 3013 ParsedType RhsTy, 3014 SourceLocation RParen); 3015 3016 ExprResult BuildBinaryTypeTrait(BinaryTypeTrait BTT, 3017 SourceLocation KWLoc, 3018 TypeSourceInfo *LhsT, 3019 TypeSourceInfo *RhsT, 3020 SourceLocation RParen); 3021 3022 /// ActOnArrayTypeTrait - Parsed one of the bianry type trait support 3023 /// pseudo-functions. 3024 ExprResult ActOnArrayTypeTrait(ArrayTypeTrait ATT, 3025 SourceLocation KWLoc, 3026 ParsedType LhsTy, 3027 Expr *DimExpr, 3028 SourceLocation RParen); 3029 3030 ExprResult BuildArrayTypeTrait(ArrayTypeTrait ATT, 3031 SourceLocation KWLoc, 3032 TypeSourceInfo *TSInfo, 3033 Expr *DimExpr, 3034 SourceLocation RParen); 3035 3036 /// ActOnExpressionTrait - Parsed one of the unary type trait support 3037 /// pseudo-functions. 3038 ExprResult ActOnExpressionTrait(ExpressionTrait OET, 3039 SourceLocation KWLoc, 3040 Expr *Queried, 3041 SourceLocation RParen); 3042 3043 ExprResult BuildExpressionTrait(ExpressionTrait OET, 3044 SourceLocation KWLoc, 3045 Expr *Queried, 3046 SourceLocation RParen); 3047 3048 ExprResult ActOnStartCXXMemberReference(Scope *S, 3049 Expr *Base, 3050 SourceLocation OpLoc, 3051 tok::TokenKind OpKind, 3052 ParsedType &ObjectType, 3053 bool &MayBePseudoDestructor); 3054 3055 ExprResult DiagnoseDtorReference(SourceLocation NameLoc, Expr *MemExpr); 3056 3057 ExprResult BuildPseudoDestructorExpr(Expr *Base, 3058 SourceLocation OpLoc, 3059 tok::TokenKind OpKind, 3060 const CXXScopeSpec &SS, 3061 TypeSourceInfo *ScopeType, 3062 SourceLocation CCLoc, 3063 SourceLocation TildeLoc, 3064 PseudoDestructorTypeStorage DestroyedType, 3065 bool HasTrailingLParen); 3066 3067 ExprResult ActOnPseudoDestructorExpr(Scope *S, Expr *Base, 3068 SourceLocation OpLoc, 3069 tok::TokenKind OpKind, 3070 CXXScopeSpec &SS, 3071 UnqualifiedId &FirstTypeName, 3072 SourceLocation CCLoc, 3073 SourceLocation TildeLoc, 3074 UnqualifiedId &SecondTypeName, 3075 bool HasTrailingLParen); 3076 3077 /// MaybeCreateExprWithCleanups - If the current full-expression 3078 /// requires any cleanups, surround it with a ExprWithCleanups node. 3079 /// Otherwise, just returns the passed-in expression. 3080 Expr *MaybeCreateExprWithCleanups(Expr *SubExpr); 3081 Stmt *MaybeCreateStmtWithCleanups(Stmt *SubStmt); 3082 ExprResult MaybeCreateExprWithCleanups(ExprResult SubExpr); 3083 3084 ExprResult ActOnFinishFullExpr(Expr *Expr); 3085 StmtResult ActOnFinishFullStmt(Stmt *Stmt); 3086 3087 // Marks SS invalid if it represents an incomplete type. 3088 bool RequireCompleteDeclContext(CXXScopeSpec &SS, DeclContext *DC); 3089 3090 DeclContext *computeDeclContext(QualType T); 3091 DeclContext *computeDeclContext(const CXXScopeSpec &SS, 3092 bool EnteringContext = false); 3093 bool isDependentScopeSpecifier(const CXXScopeSpec &SS); 3094 CXXRecordDecl *getCurrentInstantiationOf(NestedNameSpecifier *NNS); 3095 bool isUnknownSpecialization(const CXXScopeSpec &SS); 3096 3097 /// \brief The parser has parsed a global nested-name-specifier '::'. 3098 /// 3099 /// \param S The scope in which this nested-name-specifier occurs. 3100 /// 3101 /// \param CCLoc The location of the '::'. 3102 /// 3103 /// \param SS The nested-name-specifier, which will be updated in-place 3104 /// to reflect the parsed nested-name-specifier. 3105 /// 3106 /// \returns true if an error occurred, false otherwise. 3107 bool ActOnCXXGlobalScopeSpecifier(Scope *S, SourceLocation CCLoc, 3108 CXXScopeSpec &SS); 3109 3110 bool isAcceptableNestedNameSpecifier(NamedDecl *SD); 3111 NamedDecl *FindFirstQualifierInScope(Scope *S, NestedNameSpecifier *NNS); 3112 3113 bool isNonTypeNestedNameSpecifier(Scope *S, CXXScopeSpec &SS, 3114 SourceLocation IdLoc, 3115 IdentifierInfo &II, 3116 ParsedType ObjectType); 3117 3118 bool BuildCXXNestedNameSpecifier(Scope *S, 3119 IdentifierInfo &Identifier, 3120 SourceLocation IdentifierLoc, 3121 SourceLocation CCLoc, 3122 QualType ObjectType, 3123 bool EnteringContext, 3124 CXXScopeSpec &SS, 3125 NamedDecl *ScopeLookupResult, 3126 bool ErrorRecoveryLookup); 3127 3128 /// \brief The parser has parsed a nested-name-specifier 'identifier::'. 3129 /// 3130 /// \param S The scope in which this nested-name-specifier occurs. 3131 /// 3132 /// \param Identifier The identifier preceding the '::'. 3133 /// 3134 /// \param IdentifierLoc The location of the identifier. 3135 /// 3136 /// \param CCLoc The location of the '::'. 3137 /// 3138 /// \param ObjectType The type of the object, if we're parsing 3139 /// nested-name-specifier in a member access expression. 3140 /// 3141 /// \param EnteringContext Whether we're entering the context nominated by 3142 /// this nested-name-specifier. 3143 /// 3144 /// \param SS The nested-name-specifier, which is both an input 3145 /// parameter (the nested-name-specifier before this type) and an 3146 /// output parameter (containing the full nested-name-specifier, 3147 /// including this new type). 3148 /// 3149 /// \returns true if an error occurred, false otherwise. 3150 bool ActOnCXXNestedNameSpecifier(Scope *S, 3151 IdentifierInfo &Identifier, 3152 SourceLocation IdentifierLoc, 3153 SourceLocation CCLoc, 3154 ParsedType ObjectType, 3155 bool EnteringContext, 3156 CXXScopeSpec &SS); 3157 3158 bool IsInvalidUnlessNestedName(Scope *S, CXXScopeSpec &SS, 3159 IdentifierInfo &Identifier, 3160 SourceLocation IdentifierLoc, 3161 SourceLocation ColonLoc, 3162 ParsedType ObjectType, 3163 bool EnteringContext); 3164 3165 /// \brief The parser has parsed a nested-name-specifier 3166 /// 'template[opt] template-name < template-args >::'. 3167 /// 3168 /// \param S The scope in which this nested-name-specifier occurs. 3169 /// 3170 /// \param TemplateLoc The location of the 'template' keyword, if any. 3171 /// 3172 /// \param SS The nested-name-specifier, which is both an input 3173 /// parameter (the nested-name-specifier before this type) and an 3174 /// output parameter (containing the full nested-name-specifier, 3175 /// including this new type). 3176 /// 3177 /// \param TemplateLoc the location of the 'template' keyword, if any. 3178 /// \param TemplateName The template name. 3179 /// \param TemplateNameLoc The location of the template name. 3180 /// \param LAngleLoc The location of the opening angle bracket ('<'). 3181 /// \param TemplateArgs The template arguments. 3182 /// \param RAngleLoc The location of the closing angle bracket ('>'). 3183 /// \param CCLoc The location of the '::'. 3184 3185 /// \param EnteringContext Whether we're entering the context of the 3186 /// nested-name-specifier. 3187 /// 3188 /// 3189 /// \returns true if an error occurred, false otherwise. 3190 bool ActOnCXXNestedNameSpecifier(Scope *S, 3191 SourceLocation TemplateLoc, 3192 CXXScopeSpec &SS, 3193 TemplateTy Template, 3194 SourceLocation TemplateNameLoc, 3195 SourceLocation LAngleLoc, 3196 ASTTemplateArgsPtr TemplateArgs, 3197 SourceLocation RAngleLoc, 3198 SourceLocation CCLoc, 3199 bool EnteringContext); 3200 3201 /// \brief Given a C++ nested-name-specifier, produce an annotation value 3202 /// that the parser can use later to reconstruct the given 3203 /// nested-name-specifier. 3204 /// 3205 /// \param SS A nested-name-specifier. 3206 /// 3207 /// \returns A pointer containing all of the information in the 3208 /// nested-name-specifier \p SS. 3209 void *SaveNestedNameSpecifierAnnotation(CXXScopeSpec &SS); 3210 3211 /// \brief Given an annotation pointer for a nested-name-specifier, restore 3212 /// the nested-name-specifier structure. 3213 /// 3214 /// \param Annotation The annotation pointer, produced by 3215 /// \c SaveNestedNameSpecifierAnnotation(). 3216 /// 3217 /// \param AnnotationRange The source range corresponding to the annotation. 3218 /// 3219 /// \param SS The nested-name-specifier that will be updated with the contents 3220 /// of the annotation pointer. 3221 void RestoreNestedNameSpecifierAnnotation(void *Annotation, 3222 SourceRange AnnotationRange, 3223 CXXScopeSpec &SS); 3224 3225 bool ShouldEnterDeclaratorScope(Scope *S, const CXXScopeSpec &SS); 3226 3227 /// ActOnCXXEnterDeclaratorScope - Called when a C++ scope specifier (global 3228 /// scope or nested-name-specifier) is parsed, part of a declarator-id. 3229 /// After this method is called, according to [C++ 3.4.3p3], names should be 3230 /// looked up in the declarator-id's scope, until the declarator is parsed and 3231 /// ActOnCXXExitDeclaratorScope is called. 3232 /// The 'SS' should be a non-empty valid CXXScopeSpec. 3233 bool ActOnCXXEnterDeclaratorScope(Scope *S, CXXScopeSpec &SS); 3234 3235 /// ActOnCXXExitDeclaratorScope - Called when a declarator that previously 3236 /// invoked ActOnCXXEnterDeclaratorScope(), is finished. 'SS' is the same 3237 /// CXXScopeSpec that was passed to ActOnCXXEnterDeclaratorScope as well. 3238 /// Used to indicate that names should revert to being looked up in the 3239 /// defining scope. 3240 void ActOnCXXExitDeclaratorScope(Scope *S, const CXXScopeSpec &SS); 3241 3242 /// ActOnCXXEnterDeclInitializer - Invoked when we are about to parse an 3243 /// initializer for the declaration 'Dcl'. 3244 /// After this method is called, according to [C++ 3.4.1p13], if 'Dcl' is a 3245 /// static data member of class X, names should be looked up in the scope of 3246 /// class X. 3247 void ActOnCXXEnterDeclInitializer(Scope *S, Decl *Dcl); 3248 3249 /// ActOnCXXExitDeclInitializer - Invoked after we are finished parsing an 3250 /// initializer for the declaration 'Dcl'. 3251 void ActOnCXXExitDeclInitializer(Scope *S, Decl *Dcl); 3252 3253 // ParseObjCStringLiteral - Parse Objective-C string literals. 3254 ExprResult ParseObjCStringLiteral(SourceLocation *AtLocs, 3255 Expr **Strings, 3256 unsigned NumStrings); 3257 3258 ExprResult BuildObjCEncodeExpression(SourceLocation AtLoc, 3259 TypeSourceInfo *EncodedTypeInfo, 3260 SourceLocation RParenLoc); 3261 ExprResult BuildCXXMemberCallExpr(Expr *Exp, NamedDecl *FoundDecl, 3262 CXXMethodDecl *Method); 3263 3264 ExprResult ParseObjCEncodeExpression(SourceLocation AtLoc, 3265 SourceLocation EncodeLoc, 3266 SourceLocation LParenLoc, 3267 ParsedType Ty, 3268 SourceLocation RParenLoc); 3269 3270 // ParseObjCSelectorExpression - Build selector expression for @selector 3271 ExprResult ParseObjCSelectorExpression(Selector Sel, 3272 SourceLocation AtLoc, 3273 SourceLocation SelLoc, 3274 SourceLocation LParenLoc, 3275 SourceLocation RParenLoc); 3276 3277 // ParseObjCProtocolExpression - Build protocol expression for @protocol 3278 ExprResult ParseObjCProtocolExpression(IdentifierInfo * ProtocolName, 3279 SourceLocation AtLoc, 3280 SourceLocation ProtoLoc, 3281 SourceLocation LParenLoc, 3282 SourceLocation RParenLoc); 3283 3284 //===--------------------------------------------------------------------===// 3285 // C++ Declarations 3286 // 3287 Decl *ActOnStartLinkageSpecification(Scope *S, 3288 SourceLocation ExternLoc, 3289 SourceLocation LangLoc, 3290 StringRef Lang, 3291 SourceLocation LBraceLoc); 3292 Decl *ActOnFinishLinkageSpecification(Scope *S, 3293 Decl *LinkageSpec, 3294 SourceLocation RBraceLoc); 3295 3296 3297 //===--------------------------------------------------------------------===// 3298 // C++ Classes 3299 // 3300 bool isCurrentClassName(const IdentifierInfo &II, Scope *S, 3301 const CXXScopeSpec *SS = 0); 3302 3303 Decl *ActOnAccessSpecifier(AccessSpecifier Access, 3304 SourceLocation ASLoc, 3305 SourceLocation ColonLoc); 3306 3307 Decl *ActOnCXXMemberDeclarator(Scope *S, AccessSpecifier AS, 3308 Declarator &D, 3309 MultiTemplateParamsArg TemplateParameterLists, 3310 Expr *BitfieldWidth, const VirtSpecifiers &VS, 3311 Expr *Init, bool HasDeferredInit, 3312 bool IsDefinition); 3313 void ActOnCXXInClassMemberInitializer(Decl *VarDecl, SourceLocation EqualLoc, 3314 Expr *Init); 3315 3316 MemInitResult ActOnMemInitializer(Decl *ConstructorD, 3317 Scope *S, 3318 CXXScopeSpec &SS, 3319 IdentifierInfo *MemberOrBase, 3320 ParsedType TemplateTypeTy, 3321 SourceLocation IdLoc, 3322 SourceLocation LParenLoc, 3323 Expr **Args, unsigned NumArgs, 3324 SourceLocation RParenLoc, 3325 SourceLocation EllipsisLoc); 3326 3327 MemInitResult BuildMemberInitializer(ValueDecl *Member, Expr **Args, 3328 unsigned NumArgs, SourceLocation IdLoc, 3329 SourceLocation LParenLoc, 3330 SourceLocation RParenLoc); 3331 3332 MemInitResult BuildBaseInitializer(QualType BaseType, 3333 TypeSourceInfo *BaseTInfo, 3334 Expr **Args, unsigned NumArgs, 3335 SourceLocation LParenLoc, 3336 SourceLocation RParenLoc, 3337 CXXRecordDecl *ClassDecl, 3338 SourceLocation EllipsisLoc); 3339 3340 MemInitResult BuildDelegatingInitializer(TypeSourceInfo *TInfo, 3341 Expr **Args, unsigned NumArgs, 3342 SourceLocation BaseLoc, 3343 SourceLocation RParenLoc, 3344 SourceLocation LParenLoc, 3345 CXXRecordDecl *ClassDecl); 3346 3347 bool SetDelegatingInitializer(CXXConstructorDecl *Constructor, 3348 CXXCtorInitializer *Initializer); 3349 3350 bool SetCtorInitializers(CXXConstructorDecl *Constructor, 3351 CXXCtorInitializer **Initializers, 3352 unsigned NumInitializers, bool AnyErrors); 3353 3354 void SetIvarInitializers(ObjCImplementationDecl *ObjCImplementation); 3355 3356 3357 /// MarkBaseAndMemberDestructorsReferenced - Given a record decl, 3358 /// mark all the non-trivial destructors of its members and bases as 3359 /// referenced. 3360 void MarkBaseAndMemberDestructorsReferenced(SourceLocation Loc, 3361 CXXRecordDecl *Record); 3362 3363 /// \brief The list of classes whose vtables have been used within 3364 /// this translation unit, and the source locations at which the 3365 /// first use occurred. 3366 typedef std::pair<CXXRecordDecl*, SourceLocation> VTableUse; 3367 3368 /// \brief The list of vtables that are required but have not yet been 3369 /// materialized. 3370 SmallVector<VTableUse, 16> VTableUses; 3371 3372 /// \brief The set of classes whose vtables have been used within 3373 /// this translation unit, and a bit that will be true if the vtable is 3374 /// required to be emitted (otherwise, it should be emitted only if needed 3375 /// by code generation). 3376 llvm::DenseMap<CXXRecordDecl *, bool> VTablesUsed; 3377 3378 typedef LazyVector<CXXRecordDecl *, ExternalSemaSource, 3379 &ExternalSemaSource::ReadDynamicClasses, 2, 2> 3380 DynamicClassesType; 3381 3382 /// \brief A list of all of the dynamic classes in this translation 3383 /// unit. 3384 DynamicClassesType DynamicClasses; 3385 3386 /// \brief Note that the vtable for the given class was used at the 3387 /// given location. 3388 void MarkVTableUsed(SourceLocation Loc, CXXRecordDecl *Class, 3389 bool DefinitionRequired = false); 3390 3391 /// MarkVirtualMembersReferenced - Will mark all members of the given 3392 /// CXXRecordDecl referenced. 3393 void MarkVirtualMembersReferenced(SourceLocation Loc, 3394 const CXXRecordDecl *RD); 3395 3396 /// \brief Define all of the vtables that have been used in this 3397 /// translation unit and reference any virtual members used by those 3398 /// vtables. 3399 /// 3400 /// \returns true if any work was done, false otherwise. 3401 bool DefineUsedVTables(); 3402 3403 void AddImplicitlyDeclaredMembersToClass(CXXRecordDecl *ClassDecl); 3404 3405 void ActOnMemInitializers(Decl *ConstructorDecl, 3406 SourceLocation ColonLoc, 3407 MemInitTy **MemInits, unsigned NumMemInits, 3408 bool AnyErrors); 3409 3410 void CheckCompletedCXXClass(CXXRecordDecl *Record); 3411 void ActOnFinishCXXMemberSpecification(Scope* S, SourceLocation RLoc, 3412 Decl *TagDecl, 3413 SourceLocation LBrac, 3414 SourceLocation RBrac, 3415 AttributeList *AttrList); 3416 3417 void ActOnReenterTemplateScope(Scope *S, Decl *Template); 3418 void ActOnReenterDeclaratorTemplateScope(Scope *S, DeclaratorDecl *D); 3419 void ActOnStartDelayedMemberDeclarations(Scope *S, Decl *Record); 3420 void ActOnStartDelayedCXXMethodDeclaration(Scope *S, Decl *Method); 3421 void ActOnDelayedCXXMethodParameter(Scope *S, Decl *Param); 3422 void ActOnFinishDelayedMemberDeclarations(Scope *S, Decl *Record); 3423 void ActOnFinishDelayedCXXMethodDeclaration(Scope *S, Decl *Method); 3424 void ActOnFinishDelayedMemberInitializers(Decl *Record); 3425 void MarkAsLateParsedTemplate(FunctionDecl *FD, bool Flag = true); 3426 bool IsInsideALocalClassWithinATemplateFunction(); 3427 3428 Decl *ActOnStaticAssertDeclaration(SourceLocation StaticAssertLoc, 3429 Expr *AssertExpr, 3430 Expr *AssertMessageExpr, 3431 SourceLocation RParenLoc); 3432 3433 FriendDecl *CheckFriendTypeDecl(SourceLocation FriendLoc, 3434 TypeSourceInfo *TSInfo); 3435 Decl *ActOnFriendTypeDecl(Scope *S, const DeclSpec &DS, 3436 MultiTemplateParamsArg TemplateParams); 3437 Decl *ActOnFriendFunctionDecl(Scope *S, Declarator &D, bool IsDefinition, 3438 MultiTemplateParamsArg TemplateParams); 3439 3440 QualType CheckConstructorDeclarator(Declarator &D, QualType R, 3441 StorageClass& SC); 3442 void CheckConstructor(CXXConstructorDecl *Constructor); 3443 QualType CheckDestructorDeclarator(Declarator &D, QualType R, 3444 StorageClass& SC); 3445 bool CheckDestructor(CXXDestructorDecl *Destructor); 3446 void CheckConversionDeclarator(Declarator &D, QualType &R, 3447 StorageClass& SC); 3448 Decl *ActOnConversionDeclarator(CXXConversionDecl *Conversion); 3449 3450 void CheckExplicitlyDefaultedMethods(CXXRecordDecl *Record); 3451 void CheckExplicitlyDefaultedDefaultConstructor(CXXConstructorDecl *Ctor); 3452 void CheckExplicitlyDefaultedCopyConstructor(CXXConstructorDecl *Ctor); 3453 void CheckExplicitlyDefaultedCopyAssignment(CXXMethodDecl *Method); 3454 void CheckExplicitlyDefaultedDestructor(CXXDestructorDecl *Dtor); 3455 3456 //===--------------------------------------------------------------------===// 3457 // C++ Derived Classes 3458 // 3459 3460 /// ActOnBaseSpecifier - Parsed a base specifier 3461 CXXBaseSpecifier *CheckBaseSpecifier(CXXRecordDecl *Class, 3462 SourceRange SpecifierRange, 3463 bool Virtual, AccessSpecifier Access, 3464 TypeSourceInfo *TInfo, 3465 SourceLocation EllipsisLoc); 3466 3467 BaseResult ActOnBaseSpecifier(Decl *classdecl, 3468 SourceRange SpecifierRange, 3469 bool Virtual, AccessSpecifier Access, 3470 ParsedType basetype, 3471 SourceLocation BaseLoc, 3472 SourceLocation EllipsisLoc); 3473 3474 bool AttachBaseSpecifiers(CXXRecordDecl *Class, CXXBaseSpecifier **Bases, 3475 unsigned NumBases); 3476 void ActOnBaseSpecifiers(Decl *ClassDecl, BaseTy **Bases, unsigned NumBases); 3477 3478 bool IsDerivedFrom(QualType Derived, QualType Base); 3479 bool IsDerivedFrom(QualType Derived, QualType Base, CXXBasePaths &Paths); 3480 3481 // FIXME: I don't like this name. 3482 void BuildBasePathArray(const CXXBasePaths &Paths, CXXCastPath &BasePath); 3483 3484 bool BasePathInvolvesVirtualBase(const CXXCastPath &BasePath); 3485 3486 bool CheckDerivedToBaseConversion(QualType Derived, QualType Base, 3487 SourceLocation Loc, SourceRange Range, 3488 CXXCastPath *BasePath = 0, 3489 bool IgnoreAccess = false); 3490 bool CheckDerivedToBaseConversion(QualType Derived, QualType Base, 3491 unsigned InaccessibleBaseID, 3492 unsigned AmbigiousBaseConvID, 3493 SourceLocation Loc, SourceRange Range, 3494 DeclarationName Name, 3495 CXXCastPath *BasePath); 3496 3497 std::string getAmbiguousPathsDisplayString(CXXBasePaths &Paths); 3498 3499 /// CheckOverridingFunctionReturnType - Checks whether the return types are 3500 /// covariant, according to C++ [class.virtual]p5. 3501 bool CheckOverridingFunctionReturnType(const CXXMethodDecl *New, 3502 const CXXMethodDecl *Old); 3503 3504 /// CheckOverridingFunctionExceptionSpec - Checks whether the exception 3505 /// spec is a subset of base spec. 3506 bool CheckOverridingFunctionExceptionSpec(const CXXMethodDecl *New, 3507 const CXXMethodDecl *Old); 3508 3509 bool CheckPureMethod(CXXMethodDecl *Method, SourceRange InitRange); 3510 3511 /// CheckOverrideControl - Check C++0x override control semantics. 3512 void CheckOverrideControl(const Decl *D); 3513 3514 /// CheckForFunctionMarkedFinal - Checks whether a virtual member function 3515 /// overrides a virtual member function marked 'final', according to 3516 /// C++0x [class.virtual]p3. 3517 bool CheckIfOverriddenFunctionIsMarkedFinal(const CXXMethodDecl *New, 3518 const CXXMethodDecl *Old); 3519 3520 3521 //===--------------------------------------------------------------------===// 3522 // C++ Access Control 3523 // 3524 3525 enum AccessResult { 3526 AR_accessible, 3527 AR_inaccessible, 3528 AR_dependent, 3529 AR_delayed 3530 }; 3531 3532 bool SetMemberAccessSpecifier(NamedDecl *MemberDecl, 3533 NamedDecl *PrevMemberDecl, 3534 AccessSpecifier LexicalAS); 3535 3536 AccessResult CheckUnresolvedMemberAccess(UnresolvedMemberExpr *E, 3537 DeclAccessPair FoundDecl); 3538 AccessResult CheckUnresolvedLookupAccess(UnresolvedLookupExpr *E, 3539 DeclAccessPair FoundDecl); 3540 AccessResult CheckAllocationAccess(SourceLocation OperatorLoc, 3541 SourceRange PlacementRange, 3542 CXXRecordDecl *NamingClass, 3543 DeclAccessPair FoundDecl, 3544 bool Diagnose = true); 3545 AccessResult CheckConstructorAccess(SourceLocation Loc, 3546 CXXConstructorDecl *D, 3547 const InitializedEntity &Entity, 3548 AccessSpecifier Access, 3549 bool IsCopyBindingRefToTemp = false); 3550 AccessResult CheckConstructorAccess(SourceLocation Loc, 3551 CXXConstructorDecl *D, 3552 AccessSpecifier Access, 3553 PartialDiagnostic PD); 3554 AccessResult CheckDestructorAccess(SourceLocation Loc, 3555 CXXDestructorDecl *Dtor, 3556 const PartialDiagnostic &PDiag); 3557 AccessResult CheckDirectMemberAccess(SourceLocation Loc, 3558 NamedDecl *D, 3559 const PartialDiagnostic &PDiag); 3560 AccessResult CheckMemberOperatorAccess(SourceLocation Loc, 3561 Expr *ObjectExpr, 3562 Expr *ArgExpr, 3563 DeclAccessPair FoundDecl); 3564 AccessResult CheckAddressOfMemberAccess(Expr *OvlExpr, 3565 DeclAccessPair FoundDecl); 3566 AccessResult CheckBaseClassAccess(SourceLocation AccessLoc, 3567 QualType Base, QualType Derived, 3568 const CXXBasePath &Path, 3569 unsigned DiagID, 3570 bool ForceCheck = false, 3571 bool ForceUnprivileged = false); 3572 void CheckLookupAccess(const LookupResult &R); 3573 3574 void HandleDependentAccessCheck(const DependentDiagnostic &DD, 3575 const MultiLevelTemplateArgumentList &TemplateArgs); 3576 void PerformDependentDiagnostics(const DeclContext *Pattern, 3577 const MultiLevelTemplateArgumentList &TemplateArgs); 3578 3579 void HandleDelayedAccessCheck(sema::DelayedDiagnostic &DD, Decl *Ctx); 3580 3581 /// A flag to suppress access checking. 3582 bool SuppressAccessChecking; 3583 3584 /// \brief When true, access checking violations are treated as SFINAE 3585 /// failures rather than hard errors. 3586 bool AccessCheckingSFINAE; 3587 3588 void ActOnStartSuppressingAccessChecks(); 3589 void ActOnStopSuppressingAccessChecks(); 3590 3591 enum AbstractDiagSelID { 3592 AbstractNone = -1, 3593 AbstractReturnType, 3594 AbstractParamType, 3595 AbstractVariableType, 3596 AbstractFieldType, 3597 AbstractArrayType 3598 }; 3599 3600 bool RequireNonAbstractType(SourceLocation Loc, QualType T, 3601 const PartialDiagnostic &PD); 3602 void DiagnoseAbstractType(const CXXRecordDecl *RD); 3603 3604 bool RequireNonAbstractType(SourceLocation Loc, QualType T, unsigned DiagID, 3605 AbstractDiagSelID SelID = AbstractNone); 3606 3607 //===--------------------------------------------------------------------===// 3608 // C++ Overloaded Operators [C++ 13.5] 3609 // 3610 3611 bool CheckOverloadedOperatorDeclaration(FunctionDecl *FnDecl); 3612 3613 bool CheckLiteralOperatorDeclaration(FunctionDecl *FnDecl); 3614 3615 //===--------------------------------------------------------------------===// 3616 // C++ Templates [C++ 14] 3617 // 3618 void FilterAcceptableTemplateNames(LookupResult &R); 3619 bool hasAnyAcceptableTemplateNames(LookupResult &R); 3620 3621 void LookupTemplateName(LookupResult &R, Scope *S, CXXScopeSpec &SS, 3622 QualType ObjectType, bool EnteringContext, 3623 bool &MemberOfUnknownSpecialization); 3624 3625 TemplateNameKind isTemplateName(Scope *S, 3626 CXXScopeSpec &SS, 3627 bool hasTemplateKeyword, 3628 UnqualifiedId &Name, 3629 ParsedType ObjectType, 3630 bool EnteringContext, 3631 TemplateTy &Template, 3632 bool &MemberOfUnknownSpecialization); 3633 3634 bool DiagnoseUnknownTemplateName(const IdentifierInfo &II, 3635 SourceLocation IILoc, 3636 Scope *S, 3637 const CXXScopeSpec *SS, 3638 TemplateTy &SuggestedTemplate, 3639 TemplateNameKind &SuggestedKind); 3640 3641 bool DiagnoseTemplateParameterShadow(SourceLocation Loc, Decl *PrevDecl); 3642 TemplateDecl *AdjustDeclIfTemplate(Decl *&Decl); 3643 3644 Decl *ActOnTypeParameter(Scope *S, bool Typename, bool Ellipsis, 3645 SourceLocation EllipsisLoc, 3646 SourceLocation KeyLoc, 3647 IdentifierInfo *ParamName, 3648 SourceLocation ParamNameLoc, 3649 unsigned Depth, unsigned Position, 3650 SourceLocation EqualLoc, 3651 ParsedType DefaultArg); 3652 3653 QualType CheckNonTypeTemplateParameterType(QualType T, SourceLocation Loc); 3654 Decl *ActOnNonTypeTemplateParameter(Scope *S, Declarator &D, 3655 unsigned Depth, 3656 unsigned Position, 3657 SourceLocation EqualLoc, 3658 Expr *DefaultArg); 3659 Decl *ActOnTemplateTemplateParameter(Scope *S, 3660 SourceLocation TmpLoc, 3661 TemplateParamsTy *Params, 3662 SourceLocation EllipsisLoc, 3663 IdentifierInfo *ParamName, 3664 SourceLocation ParamNameLoc, 3665 unsigned Depth, 3666 unsigned Position, 3667 SourceLocation EqualLoc, 3668 ParsedTemplateArgument DefaultArg); 3669 3670 TemplateParamsTy * 3671 ActOnTemplateParameterList(unsigned Depth, 3672 SourceLocation ExportLoc, 3673 SourceLocation TemplateLoc, 3674 SourceLocation LAngleLoc, 3675 Decl **Params, unsigned NumParams, 3676 SourceLocation RAngleLoc); 3677 3678 /// \brief The context in which we are checking a template parameter 3679 /// list. 3680 enum TemplateParamListContext { 3681 TPC_ClassTemplate, 3682 TPC_FunctionTemplate, 3683 TPC_ClassTemplateMember, 3684 TPC_FriendFunctionTemplate, 3685 TPC_FriendFunctionTemplateDefinition, 3686 TPC_TypeAliasTemplate 3687 }; 3688 3689 bool CheckTemplateParameterList(TemplateParameterList *NewParams, 3690 TemplateParameterList *OldParams, 3691 TemplateParamListContext TPC); 3692 TemplateParameterList * 3693 MatchTemplateParametersToScopeSpecifier(SourceLocation DeclStartLoc, 3694 SourceLocation DeclLoc, 3695 const CXXScopeSpec &SS, 3696 TemplateParameterList **ParamLists, 3697 unsigned NumParamLists, 3698 bool IsFriend, 3699 bool &IsExplicitSpecialization, 3700 bool &Invalid); 3701 3702 DeclResult CheckClassTemplate(Scope *S, unsigned TagSpec, TagUseKind TUK, 3703 SourceLocation KWLoc, CXXScopeSpec &SS, 3704 IdentifierInfo *Name, SourceLocation NameLoc, 3705 AttributeList *Attr, 3706 TemplateParameterList *TemplateParams, 3707 AccessSpecifier AS, 3708 unsigned NumOuterTemplateParamLists, 3709 TemplateParameterList **OuterTemplateParamLists); 3710 3711 void translateTemplateArguments(const ASTTemplateArgsPtr &In, 3712 TemplateArgumentListInfo &Out); 3713 3714 void NoteAllFoundTemplates(TemplateName Name); 3715 3716 QualType CheckTemplateIdType(TemplateName Template, 3717 SourceLocation TemplateLoc, 3718 TemplateArgumentListInfo &TemplateArgs); 3719 3720 TypeResult 3721 ActOnTemplateIdType(CXXScopeSpec &SS, 3722 TemplateTy Template, SourceLocation TemplateLoc, 3723 SourceLocation LAngleLoc, 3724 ASTTemplateArgsPtr TemplateArgs, 3725 SourceLocation RAngleLoc); 3726 3727 /// \brief Parsed an elaborated-type-specifier that refers to a template-id, 3728 /// such as \c class T::template apply<U>. 3729 /// 3730 /// \param TUK 3731 TypeResult ActOnTagTemplateIdType(TagUseKind TUK, 3732 TypeSpecifierType TagSpec, 3733 SourceLocation TagLoc, 3734 CXXScopeSpec &SS, 3735 TemplateTy TemplateD, 3736 SourceLocation TemplateLoc, 3737 SourceLocation LAngleLoc, 3738 ASTTemplateArgsPtr TemplateArgsIn, 3739 SourceLocation RAngleLoc); 3740 3741 3742 ExprResult BuildTemplateIdExpr(const CXXScopeSpec &SS, 3743 LookupResult &R, 3744 bool RequiresADL, 3745 const TemplateArgumentListInfo &TemplateArgs); 3746 ExprResult BuildQualifiedTemplateIdExpr(CXXScopeSpec &SS, 3747 const DeclarationNameInfo &NameInfo, 3748 const TemplateArgumentListInfo &TemplateArgs); 3749 3750 TemplateNameKind ActOnDependentTemplateName(Scope *S, 3751 SourceLocation TemplateKWLoc, 3752 CXXScopeSpec &SS, 3753 UnqualifiedId &Name, 3754 ParsedType ObjectType, 3755 bool EnteringContext, 3756 TemplateTy &Template); 3757 3758 DeclResult 3759 ActOnClassTemplateSpecialization(Scope *S, unsigned TagSpec, TagUseKind TUK, 3760 SourceLocation KWLoc, 3761 CXXScopeSpec &SS, 3762 TemplateTy Template, 3763 SourceLocation TemplateNameLoc, 3764 SourceLocation LAngleLoc, 3765 ASTTemplateArgsPtr TemplateArgs, 3766 SourceLocation RAngleLoc, 3767 AttributeList *Attr, 3768 MultiTemplateParamsArg TemplateParameterLists); 3769 3770 Decl *ActOnTemplateDeclarator(Scope *S, 3771 MultiTemplateParamsArg TemplateParameterLists, 3772 Declarator &D); 3773 3774 Decl *ActOnStartOfFunctionTemplateDef(Scope *FnBodyScope, 3775 MultiTemplateParamsArg TemplateParameterLists, 3776 Declarator &D); 3777 3778 bool 3779 CheckSpecializationInstantiationRedecl(SourceLocation NewLoc, 3780 TemplateSpecializationKind NewTSK, 3781 NamedDecl *PrevDecl, 3782 TemplateSpecializationKind PrevTSK, 3783 SourceLocation PrevPtOfInstantiation, 3784 bool &SuppressNew); 3785 3786 bool CheckDependentFunctionTemplateSpecialization(FunctionDecl *FD, 3787 const TemplateArgumentListInfo &ExplicitTemplateArgs, 3788 LookupResult &Previous); 3789 3790 bool CheckFunctionTemplateSpecialization(FunctionDecl *FD, 3791 TemplateArgumentListInfo *ExplicitTemplateArgs, 3792 LookupResult &Previous); 3793 bool CheckMemberSpecialization(NamedDecl *Member, LookupResult &Previous); 3794 3795 DeclResult 3796 ActOnExplicitInstantiation(Scope *S, 3797 SourceLocation ExternLoc, 3798 SourceLocation TemplateLoc, 3799 unsigned TagSpec, 3800 SourceLocation KWLoc, 3801 const CXXScopeSpec &SS, 3802 TemplateTy Template, 3803 SourceLocation TemplateNameLoc, 3804 SourceLocation LAngleLoc, 3805 ASTTemplateArgsPtr TemplateArgs, 3806 SourceLocation RAngleLoc, 3807 AttributeList *Attr); 3808 3809 DeclResult 3810 ActOnExplicitInstantiation(Scope *S, 3811 SourceLocation ExternLoc, 3812 SourceLocation TemplateLoc, 3813 unsigned TagSpec, 3814 SourceLocation KWLoc, 3815 CXXScopeSpec &SS, 3816 IdentifierInfo *Name, 3817 SourceLocation NameLoc, 3818 AttributeList *Attr); 3819 3820 DeclResult ActOnExplicitInstantiation(Scope *S, 3821 SourceLocation ExternLoc, 3822 SourceLocation TemplateLoc, 3823 Declarator &D); 3824 3825 TemplateArgumentLoc 3826 SubstDefaultTemplateArgumentIfAvailable(TemplateDecl *Template, 3827 SourceLocation TemplateLoc, 3828 SourceLocation RAngleLoc, 3829 Decl *Param, 3830 SmallVectorImpl<TemplateArgument> &Converted); 3831 3832 /// \brief Specifies the context in which a particular template 3833 /// argument is being checked. 3834 enum CheckTemplateArgumentKind { 3835 /// \brief The template argument was specified in the code or was 3836 /// instantiated with some deduced template arguments. 3837 CTAK_Specified, 3838 3839 /// \brief The template argument was deduced via template argument 3840 /// deduction. 3841 CTAK_Deduced, 3842 3843 /// \brief The template argument was deduced from an array bound 3844 /// via template argument deduction. 3845 CTAK_DeducedFromArrayBound 3846 }; 3847 3848 bool CheckTemplateArgument(NamedDecl *Param, 3849 const TemplateArgumentLoc &Arg, 3850 NamedDecl *Template, 3851 SourceLocation TemplateLoc, 3852 SourceLocation RAngleLoc, 3853 unsigned ArgumentPackIndex, 3854 SmallVectorImpl<TemplateArgument> &Converted, 3855 CheckTemplateArgumentKind CTAK = CTAK_Specified); 3856 3857 /// \brief Check that the given template arguments can be be provided to 3858 /// the given template, converting the arguments along the way. 3859 /// 3860 /// \param Template The template to which the template arguments are being 3861 /// provided. 3862 /// 3863 /// \param TemplateLoc The location of the template name in the source. 3864 /// 3865 /// \param TemplateArgs The list of template arguments. If the template is 3866 /// a template template parameter, this function may extend the set of 3867 /// template arguments to also include substituted, defaulted template 3868 /// arguments. 3869 /// 3870 /// \param PartialTemplateArgs True if the list of template arguments is 3871 /// intentionally partial, e.g., because we're checking just the initial 3872 /// set of template arguments. 3873 /// 3874 /// \param Converted Will receive the converted, canonicalized template 3875 /// arguments. 3876 /// 3877 /// \returns True if an error occurred, false otherwise. 3878 bool CheckTemplateArgumentList(TemplateDecl *Template, 3879 SourceLocation TemplateLoc, 3880 TemplateArgumentListInfo &TemplateArgs, 3881 bool PartialTemplateArgs, 3882 SmallVectorImpl<TemplateArgument> &Converted); 3883 3884 bool CheckTemplateTypeArgument(TemplateTypeParmDecl *Param, 3885 const TemplateArgumentLoc &Arg, 3886 SmallVectorImpl<TemplateArgument> &Converted); 3887 3888 bool CheckTemplateArgument(TemplateTypeParmDecl *Param, 3889 TypeSourceInfo *Arg); 3890 bool CheckTemplateArgumentPointerToMember(Expr *Arg, 3891 TemplateArgument &Converted); 3892 ExprResult CheckTemplateArgument(NonTypeTemplateParmDecl *Param, 3893 QualType InstantiatedParamType, Expr *Arg, 3894 TemplateArgument &Converted, 3895 CheckTemplateArgumentKind CTAK = CTAK_Specified); 3896 bool CheckTemplateArgument(TemplateTemplateParmDecl *Param, 3897 const TemplateArgumentLoc &Arg); 3898 3899 ExprResult 3900 BuildExpressionFromDeclTemplateArgument(const TemplateArgument &Arg, 3901 QualType ParamType, 3902 SourceLocation Loc); 3903 ExprResult 3904 BuildExpressionFromIntegralTemplateArgument(const TemplateArgument &Arg, 3905 SourceLocation Loc); 3906 3907 /// \brief Enumeration describing how template parameter lists are compared 3908 /// for equality. 3909 enum TemplateParameterListEqualKind { 3910 /// \brief We are matching the template parameter lists of two templates 3911 /// that might be redeclarations. 3912 /// 3913 /// \code 3914 /// template<typename T> struct X; 3915 /// template<typename T> struct X; 3916 /// \endcode 3917 TPL_TemplateMatch, 3918 3919 /// \brief We are matching the template parameter lists of two template 3920 /// template parameters as part of matching the template parameter lists 3921 /// of two templates that might be redeclarations. 3922 /// 3923 /// \code 3924 /// template<template<int I> class TT> struct X; 3925 /// template<template<int Value> class Other> struct X; 3926 /// \endcode 3927 TPL_TemplateTemplateParmMatch, 3928 3929 /// \brief We are matching the template parameter lists of a template 3930 /// template argument against the template parameter lists of a template 3931 /// template parameter. 3932 /// 3933 /// \code 3934 /// template<template<int Value> class Metafun> struct X; 3935 /// template<int Value> struct integer_c; 3936 /// X<integer_c> xic; 3937 /// \endcode 3938 TPL_TemplateTemplateArgumentMatch 3939 }; 3940 3941 bool TemplateParameterListsAreEqual(TemplateParameterList *New, 3942 TemplateParameterList *Old, 3943 bool Complain, 3944 TemplateParameterListEqualKind Kind, 3945 SourceLocation TemplateArgLoc 3946 = SourceLocation()); 3947 3948 bool CheckTemplateDeclScope(Scope *S, TemplateParameterList *TemplateParams); 3949 3950 /// \brief Called when the parser has parsed a C++ typename 3951 /// specifier, e.g., "typename T::type". 3952 /// 3953 /// \param S The scope in which this typename type occurs. 3954 /// \param TypenameLoc the location of the 'typename' keyword 3955 /// \param SS the nested-name-specifier following the typename (e.g., 'T::'). 3956 /// \param II the identifier we're retrieving (e.g., 'type' in the example). 3957 /// \param IdLoc the location of the identifier. 3958 TypeResult 3959 ActOnTypenameType(Scope *S, SourceLocation TypenameLoc, 3960 const CXXScopeSpec &SS, const IdentifierInfo &II, 3961 SourceLocation IdLoc); 3962 3963 /// \brief Called when the parser has parsed a C++ typename 3964 /// specifier that ends in a template-id, e.g., 3965 /// "typename MetaFun::template apply<T1, T2>". 3966 /// 3967 /// \param S The scope in which this typename type occurs. 3968 /// \param TypenameLoc the location of the 'typename' keyword 3969 /// \param SS the nested-name-specifier following the typename (e.g., 'T::'). 3970 /// \param TemplateLoc the location of the 'template' keyword, if any. 3971 /// \param TemplateName The template name. 3972 /// \param TemplateNameLoc The location of the template name. 3973 /// \param LAngleLoc The location of the opening angle bracket ('<'). 3974 /// \param TemplateArgs The template arguments. 3975 /// \param RAngleLoc The location of the closing angle bracket ('>'). 3976 TypeResult 3977 ActOnTypenameType(Scope *S, SourceLocation TypenameLoc, 3978 const CXXScopeSpec &SS, 3979 SourceLocation TemplateLoc, 3980 TemplateTy Template, 3981 SourceLocation TemplateNameLoc, 3982 SourceLocation LAngleLoc, 3983 ASTTemplateArgsPtr TemplateArgs, 3984 SourceLocation RAngleLoc); 3985 3986 QualType CheckTypenameType(ElaboratedTypeKeyword Keyword, 3987 SourceLocation KeywordLoc, 3988 NestedNameSpecifierLoc QualifierLoc, 3989 const IdentifierInfo &II, 3990 SourceLocation IILoc); 3991 3992 TypeSourceInfo *RebuildTypeInCurrentInstantiation(TypeSourceInfo *T, 3993 SourceLocation Loc, 3994 DeclarationName Name); 3995 bool RebuildNestedNameSpecifierInCurrentInstantiation(CXXScopeSpec &SS); 3996 3997 ExprResult RebuildExprInCurrentInstantiation(Expr *E); 3998 3999 std::string 4000 getTemplateArgumentBindingsText(const TemplateParameterList *Params, 4001 const TemplateArgumentList &Args); 4002 4003 std::string 4004 getTemplateArgumentBindingsText(const TemplateParameterList *Params, 4005 const TemplateArgument *Args, 4006 unsigned NumArgs); 4007 4008 //===--------------------------------------------------------------------===// 4009 // C++ Variadic Templates (C++0x [temp.variadic]) 4010 //===--------------------------------------------------------------------===// 4011 4012 /// \brief The context in which an unexpanded parameter pack is 4013 /// being diagnosed. 4014 /// 4015 /// Note that the values of this enumeration line up with the first 4016 /// argument to the \c err_unexpanded_parameter_pack diagnostic. 4017 enum UnexpandedParameterPackContext { 4018 /// \brief An arbitrary expression. 4019 UPPC_Expression = 0, 4020 4021 /// \brief The base type of a class type. 4022 UPPC_BaseType, 4023 4024 /// \brief The type of an arbitrary declaration. 4025 UPPC_DeclarationType, 4026 4027 /// \brief The type of a data member. 4028 UPPC_DataMemberType, 4029 4030 /// \brief The size of a bit-field. 4031 UPPC_BitFieldWidth, 4032 4033 /// \brief The expression in a static assertion. 4034 UPPC_StaticAssertExpression, 4035 4036 /// \brief The fixed underlying type of an enumeration. 4037 UPPC_FixedUnderlyingType, 4038 4039 /// \brief The enumerator value. 4040 UPPC_EnumeratorValue, 4041 4042 /// \brief A using declaration. 4043 UPPC_UsingDeclaration, 4044 4045 /// \brief A friend declaration. 4046 UPPC_FriendDeclaration, 4047 4048 /// \brief A declaration qualifier. 4049 UPPC_DeclarationQualifier, 4050 4051 /// \brief An initializer. 4052 UPPC_Initializer, 4053 4054 /// \brief A default argument. 4055 UPPC_DefaultArgument, 4056 4057 /// \brief The type of a non-type template parameter. 4058 UPPC_NonTypeTemplateParameterType, 4059 4060 /// \brief The type of an exception. 4061 UPPC_ExceptionType, 4062 4063 /// \brief Partial specialization. 4064 UPPC_PartialSpecialization 4065 }; 4066 4067 /// \brief If the given type contains an unexpanded parameter pack, 4068 /// diagnose the error. 4069 /// 4070 /// \param Loc The source location where a diagnostc should be emitted. 4071 /// 4072 /// \param T The type that is being checked for unexpanded parameter 4073 /// packs. 4074 /// 4075 /// \returns true if an error occurred, false otherwise. 4076 bool DiagnoseUnexpandedParameterPack(SourceLocation Loc, TypeSourceInfo *T, 4077 UnexpandedParameterPackContext UPPC); 4078 4079 /// \brief If the given expression contains an unexpanded parameter 4080 /// pack, diagnose the error. 4081 /// 4082 /// \param E The expression that is being checked for unexpanded 4083 /// parameter packs. 4084 /// 4085 /// \returns true if an error occurred, false otherwise. 4086 bool DiagnoseUnexpandedParameterPack(Expr *E, 4087 UnexpandedParameterPackContext UPPC = UPPC_Expression); 4088 4089 /// \brief If the given nested-name-specifier contains an unexpanded 4090 /// parameter pack, diagnose the error. 4091 /// 4092 /// \param SS The nested-name-specifier that is being checked for 4093 /// unexpanded parameter packs. 4094 /// 4095 /// \returns true if an error occurred, false otherwise. 4096 bool DiagnoseUnexpandedParameterPack(const CXXScopeSpec &SS, 4097 UnexpandedParameterPackContext UPPC); 4098 4099 /// \brief If the given name contains an unexpanded parameter pack, 4100 /// diagnose the error. 4101 /// 4102 /// \param NameInfo The name (with source location information) that 4103 /// is being checked for unexpanded parameter packs. 4104 /// 4105 /// \returns true if an error occurred, false otherwise. 4106 bool DiagnoseUnexpandedParameterPack(const DeclarationNameInfo &NameInfo, 4107 UnexpandedParameterPackContext UPPC); 4108 4109 /// \brief If the given template name contains an unexpanded parameter pack, 4110 /// diagnose the error. 4111 /// 4112 /// \param Loc The location of the template name. 4113 /// 4114 /// \param Template The template name that is being checked for unexpanded 4115 /// parameter packs. 4116 /// 4117 /// \returns true if an error occurred, false otherwise. 4118 bool DiagnoseUnexpandedParameterPack(SourceLocation Loc, 4119 TemplateName Template, 4120 UnexpandedParameterPackContext UPPC); 4121 4122 /// \brief If the given template argument contains an unexpanded parameter 4123 /// pack, diagnose the error. 4124 /// 4125 /// \param Arg The template argument that is being checked for unexpanded 4126 /// parameter packs. 4127 /// 4128 /// \returns true if an error occurred, false otherwise. 4129 bool DiagnoseUnexpandedParameterPack(TemplateArgumentLoc Arg, 4130 UnexpandedParameterPackContext UPPC); 4131 4132 /// \brief Collect the set of unexpanded parameter packs within the given 4133 /// template argument. 4134 /// 4135 /// \param Arg The template argument that will be traversed to find 4136 /// unexpanded parameter packs. 4137 void collectUnexpandedParameterPacks(TemplateArgument Arg, 4138 SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); 4139 4140 /// \brief Collect the set of unexpanded parameter packs within the given 4141 /// template argument. 4142 /// 4143 /// \param Arg The template argument that will be traversed to find 4144 /// unexpanded parameter packs. 4145 void collectUnexpandedParameterPacks(TemplateArgumentLoc Arg, 4146 SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); 4147 4148 /// \brief Collect the set of unexpanded parameter packs within the given 4149 /// type. 4150 /// 4151 /// \param T The type that will be traversed to find 4152 /// unexpanded parameter packs. 4153 void collectUnexpandedParameterPacks(QualType T, 4154 SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); 4155 4156 /// \brief Collect the set of unexpanded parameter packs within the given 4157 /// type. 4158 /// 4159 /// \param TL The type that will be traversed to find 4160 /// unexpanded parameter packs. 4161 void collectUnexpandedParameterPacks(TypeLoc TL, 4162 SmallVectorImpl<UnexpandedParameterPack> &Unexpanded); 4163 4164 /// \brief Invoked when parsing a template argument followed by an 4165 /// ellipsis, which creates a pack expansion. 4166 /// 4167 /// \param Arg The template argument preceding the ellipsis, which 4168 /// may already be invalid. 4169 /// 4170 /// \param EllipsisLoc The location of the ellipsis. 4171 ParsedTemplateArgument ActOnPackExpansion(const ParsedTemplateArgument &Arg, 4172 SourceLocation EllipsisLoc); 4173 4174 /// \brief Invoked when parsing a type followed by an ellipsis, which 4175 /// creates a pack expansion. 4176 /// 4177 /// \param Type The type preceding the ellipsis, which will become 4178 /// the pattern of the pack expansion. 4179 /// 4180 /// \param EllipsisLoc The location of the ellipsis. 4181 TypeResult ActOnPackExpansion(ParsedType Type, SourceLocation EllipsisLoc); 4182 4183 /// \brief Construct a pack expansion type from the pattern of the pack 4184 /// expansion. 4185 TypeSourceInfo *CheckPackExpansion(TypeSourceInfo *Pattern, 4186 SourceLocation EllipsisLoc, 4187 llvm::Optional<unsigned> NumExpansions); 4188 4189 /// \brief Construct a pack expansion type from the pattern of the pack 4190 /// expansion. 4191 QualType CheckPackExpansion(QualType Pattern, 4192 SourceRange PatternRange, 4193 SourceLocation EllipsisLoc, 4194 llvm::Optional<unsigned> NumExpansions); 4195 4196 /// \brief Invoked when parsing an expression followed by an ellipsis, which 4197 /// creates a pack expansion. 4198 /// 4199 /// \param Pattern The expression preceding the ellipsis, which will become 4200 /// the pattern of the pack expansion. 4201 /// 4202 /// \param EllipsisLoc The location of the ellipsis. 4203 ExprResult ActOnPackExpansion(Expr *Pattern, SourceLocation EllipsisLoc); 4204 4205 /// \brief Invoked when parsing an expression followed by an ellipsis, which 4206 /// creates a pack expansion. 4207 /// 4208 /// \param Pattern The expression preceding the ellipsis, which will become 4209 /// the pattern of the pack expansion. 4210 /// 4211 /// \param EllipsisLoc The location of the ellipsis. 4212 ExprResult CheckPackExpansion(Expr *Pattern, SourceLocation EllipsisLoc, 4213 llvm::Optional<unsigned> NumExpansions); 4214 4215 /// \brief Determine whether we could expand a pack expansion with the 4216 /// given set of parameter packs into separate arguments by repeatedly 4217 /// transforming the pattern. 4218 /// 4219 /// \param EllipsisLoc The location of the ellipsis that identifies the 4220 /// pack expansion. 4221 /// 4222 /// \param PatternRange The source range that covers the entire pattern of 4223 /// the pack expansion. 4224 /// 4225 /// \param Unexpanded The set of unexpanded parameter packs within the 4226 /// pattern. 4227 /// 4228 /// \param NumUnexpanded The number of unexpanded parameter packs in 4229 /// \p Unexpanded. 4230 /// 4231 /// \param ShouldExpand Will be set to \c true if the transformer should 4232 /// expand the corresponding pack expansions into separate arguments. When 4233 /// set, \c NumExpansions must also be set. 4234 /// 4235 /// \param RetainExpansion Whether the caller should add an unexpanded 4236 /// pack expansion after all of the expanded arguments. This is used 4237 /// when extending explicitly-specified template argument packs per 4238 /// C++0x [temp.arg.explicit]p9. 4239 /// 4240 /// \param NumExpansions The number of separate arguments that will be in 4241 /// the expanded form of the corresponding pack expansion. This is both an 4242 /// input and an output parameter, which can be set by the caller if the 4243 /// number of expansions is known a priori (e.g., due to a prior substitution) 4244 /// and will be set by the callee when the number of expansions is known. 4245 /// The callee must set this value when \c ShouldExpand is \c true; it may 4246 /// set this value in other cases. 4247 /// 4248 /// \returns true if an error occurred (e.g., because the parameter packs 4249 /// are to be instantiated with arguments of different lengths), false 4250 /// otherwise. If false, \c ShouldExpand (and possibly \c NumExpansions) 4251 /// must be set. 4252 bool CheckParameterPacksForExpansion(SourceLocation EllipsisLoc, 4253 SourceRange PatternRange, 4254 const UnexpandedParameterPack *Unexpanded, 4255 unsigned NumUnexpanded, 4256 const MultiLevelTemplateArgumentList &TemplateArgs, 4257 bool &ShouldExpand, 4258 bool &RetainExpansion, 4259 llvm::Optional<unsigned> &NumExpansions); 4260 4261 /// \brief Determine the number of arguments in the given pack expansion 4262 /// type. 4263 /// 4264 /// This routine already assumes that the pack expansion type can be 4265 /// expanded and that the number of arguments in the expansion is 4266 /// consistent across all of the unexpanded parameter packs in its pattern. 4267 unsigned getNumArgumentsInExpansion(QualType T, 4268 const MultiLevelTemplateArgumentList &TemplateArgs); 4269 4270 /// \brief Determine whether the given declarator contains any unexpanded 4271 /// parameter packs. 4272 /// 4273 /// This routine is used by the parser to disambiguate function declarators 4274 /// with an ellipsis prior to the ')', e.g., 4275 /// 4276 /// \code 4277 /// void f(T...); 4278 /// \endcode 4279 /// 4280 /// To determine whether we have an (unnamed) function parameter pack or 4281 /// a variadic function. 4282 /// 4283 /// \returns true if the declarator contains any unexpanded parameter packs, 4284 /// false otherwise. 4285 bool containsUnexpandedParameterPacks(Declarator &D); 4286 4287 //===--------------------------------------------------------------------===// 4288 // C++ Template Argument Deduction (C++ [temp.deduct]) 4289 //===--------------------------------------------------------------------===// 4290 4291 /// \brief Describes the result of template argument deduction. 4292 /// 4293 /// The TemplateDeductionResult enumeration describes the result of 4294 /// template argument deduction, as returned from 4295 /// DeduceTemplateArguments(). The separate TemplateDeductionInfo 4296 /// structure provides additional information about the results of 4297 /// template argument deduction, e.g., the deduced template argument 4298 /// list (if successful) or the specific template parameters or 4299 /// deduced arguments that were involved in the failure. 4300 enum TemplateDeductionResult { 4301 /// \brief Template argument deduction was successful. 4302 TDK_Success = 0, 4303 /// \brief Template argument deduction exceeded the maximum template 4304 /// instantiation depth (which has already been diagnosed). 4305 TDK_InstantiationDepth, 4306 /// \brief Template argument deduction did not deduce a value 4307 /// for every template parameter. 4308 TDK_Incomplete, 4309 /// \brief Template argument deduction produced inconsistent 4310 /// deduced values for the given template parameter. 4311 TDK_Inconsistent, 4312 /// \brief Template argument deduction failed due to inconsistent 4313 /// cv-qualifiers on a template parameter type that would 4314 /// otherwise be deduced, e.g., we tried to deduce T in "const T" 4315 /// but were given a non-const "X". 4316 TDK_Underqualified, 4317 /// \brief Substitution of the deduced template argument values 4318 /// resulted in an error. 4319 TDK_SubstitutionFailure, 4320 /// \brief Substitution of the deduced template argument values 4321 /// into a non-deduced context produced a type or value that 4322 /// produces a type that does not match the original template 4323 /// arguments provided. 4324 TDK_NonDeducedMismatch, 4325 /// \brief When performing template argument deduction for a function 4326 /// template, there were too many call arguments. 4327 TDK_TooManyArguments, 4328 /// \brief When performing template argument deduction for a function 4329 /// template, there were too few call arguments. 4330 TDK_TooFewArguments, 4331 /// \brief The explicitly-specified template arguments were not valid 4332 /// template arguments for the given template. 4333 TDK_InvalidExplicitArguments, 4334 /// \brief The arguments included an overloaded function name that could 4335 /// not be resolved to a suitable function. 4336 TDK_FailedOverloadResolution 4337 }; 4338 4339 TemplateDeductionResult 4340 DeduceTemplateArguments(ClassTemplatePartialSpecializationDecl *Partial, 4341 const TemplateArgumentList &TemplateArgs, 4342 sema::TemplateDeductionInfo &Info); 4343 4344 TemplateDeductionResult 4345 SubstituteExplicitTemplateArguments(FunctionTemplateDecl *FunctionTemplate, 4346 TemplateArgumentListInfo &ExplicitTemplateArgs, 4347 SmallVectorImpl<DeducedTemplateArgument> &Deduced, 4348 SmallVectorImpl<QualType> &ParamTypes, 4349 QualType *FunctionType, 4350 sema::TemplateDeductionInfo &Info); 4351 4352 /// brief A function argument from which we performed template argument 4353 // deduction for a call. 4354 struct OriginalCallArg { 4355 OriginalCallArg(QualType OriginalParamType, 4356 unsigned ArgIdx, 4357 QualType OriginalArgType) 4358 : OriginalParamType(OriginalParamType), ArgIdx(ArgIdx), 4359 OriginalArgType(OriginalArgType) { } 4360 4361 QualType OriginalParamType; 4362 unsigned ArgIdx; 4363 QualType OriginalArgType; 4364 }; 4365 4366 TemplateDeductionResult 4367 FinishTemplateArgumentDeduction(FunctionTemplateDecl *FunctionTemplate, 4368 SmallVectorImpl<DeducedTemplateArgument> &Deduced, 4369 unsigned NumExplicitlySpecified, 4370 FunctionDecl *&Specialization, 4371 sema::TemplateDeductionInfo &Info, 4372 SmallVectorImpl<OriginalCallArg> const *OriginalCallArgs = 0); 4373 4374 TemplateDeductionResult 4375 DeduceTemplateArguments(FunctionTemplateDecl *FunctionTemplate, 4376 TemplateArgumentListInfo *ExplicitTemplateArgs, 4377 Expr **Args, unsigned NumArgs, 4378 FunctionDecl *&Specialization, 4379 sema::TemplateDeductionInfo &Info); 4380 4381 TemplateDeductionResult 4382 DeduceTemplateArguments(FunctionTemplateDecl *FunctionTemplate, 4383 TemplateArgumentListInfo *ExplicitTemplateArgs, 4384 QualType ArgFunctionType, 4385 FunctionDecl *&Specialization, 4386 sema::TemplateDeductionInfo &Info); 4387 4388 TemplateDeductionResult 4389 DeduceTemplateArguments(FunctionTemplateDecl *FunctionTemplate, 4390 QualType ToType, 4391 CXXConversionDecl *&Specialization, 4392 sema::TemplateDeductionInfo &Info); 4393 4394 TemplateDeductionResult 4395 DeduceTemplateArguments(FunctionTemplateDecl *FunctionTemplate, 4396 TemplateArgumentListInfo *ExplicitTemplateArgs, 4397 FunctionDecl *&Specialization, 4398 sema::TemplateDeductionInfo &Info); 4399 4400 bool DeduceAutoType(TypeSourceInfo *AutoType, Expr *Initializer, 4401 TypeSourceInfo *&Result); 4402 4403 FunctionTemplateDecl *getMoreSpecializedTemplate(FunctionTemplateDecl *FT1, 4404 FunctionTemplateDecl *FT2, 4405 SourceLocation Loc, 4406 TemplatePartialOrderingContext TPOC, 4407 unsigned NumCallArguments); 4408 UnresolvedSetIterator getMostSpecialized(UnresolvedSetIterator SBegin, 4409 UnresolvedSetIterator SEnd, 4410 TemplatePartialOrderingContext TPOC, 4411 unsigned NumCallArguments, 4412 SourceLocation Loc, 4413 const PartialDiagnostic &NoneDiag, 4414 const PartialDiagnostic &AmbigDiag, 4415 const PartialDiagnostic &CandidateDiag, 4416 bool Complain = true); 4417 4418 ClassTemplatePartialSpecializationDecl * 4419 getMoreSpecializedPartialSpecialization( 4420 ClassTemplatePartialSpecializationDecl *PS1, 4421 ClassTemplatePartialSpecializationDecl *PS2, 4422 SourceLocation Loc); 4423 4424 void MarkUsedTemplateParameters(const TemplateArgumentList &TemplateArgs, 4425 bool OnlyDeduced, 4426 unsigned Depth, 4427 SmallVectorImpl<bool> &Used); 4428 void MarkDeducedTemplateParameters(FunctionTemplateDecl *FunctionTemplate, 4429 SmallVectorImpl<bool> &Deduced); 4430 4431 //===--------------------------------------------------------------------===// 4432 // C++ Template Instantiation 4433 // 4434 4435 MultiLevelTemplateArgumentList getTemplateInstantiationArgs(NamedDecl *D, 4436 const TemplateArgumentList *Innermost = 0, 4437 bool RelativeToPrimary = false, 4438 const FunctionDecl *Pattern = 0); 4439 4440 /// \brief A template instantiation that is currently in progress. 4441 struct ActiveTemplateInstantiation { 4442 /// \brief The kind of template instantiation we are performing 4443 enum InstantiationKind { 4444 /// We are instantiating a template declaration. The entity is 4445 /// the declaration we're instantiating (e.g., a CXXRecordDecl). 4446 TemplateInstantiation, 4447 4448 /// We are instantiating a default argument for a template 4449 /// parameter. The Entity is the template, and 4450 /// TemplateArgs/NumTemplateArguments provides the template 4451 /// arguments as specified. 4452 /// FIXME: Use a TemplateArgumentList 4453 DefaultTemplateArgumentInstantiation, 4454 4455 /// We are instantiating a default argument for a function. 4456 /// The Entity is the ParmVarDecl, and TemplateArgs/NumTemplateArgs 4457 /// provides the template arguments as specified. 4458 DefaultFunctionArgumentInstantiation, 4459 4460 /// We are substituting explicit template arguments provided for 4461 /// a function template. The entity is a FunctionTemplateDecl. 4462 ExplicitTemplateArgumentSubstitution, 4463 4464 /// We are substituting template argument determined as part of 4465 /// template argument deduction for either a class template 4466 /// partial specialization or a function template. The 4467 /// Entity is either a ClassTemplatePartialSpecializationDecl or 4468 /// a FunctionTemplateDecl. 4469 DeducedTemplateArgumentSubstitution, 4470 4471 /// We are substituting prior template arguments into a new 4472 /// template parameter. The template parameter itself is either a 4473 /// NonTypeTemplateParmDecl or a TemplateTemplateParmDecl. 4474 PriorTemplateArgumentSubstitution, 4475 4476 /// We are checking the validity of a default template argument that 4477 /// has been used when naming a template-id. 4478 DefaultTemplateArgumentChecking 4479 } Kind; 4480 4481 /// \brief The point of instantiation within the source code. 4482 SourceLocation PointOfInstantiation; 4483 4484 /// \brief The template (or partial specialization) in which we are 4485 /// performing the instantiation, for substitutions of prior template 4486 /// arguments. 4487 NamedDecl *Template; 4488 4489 /// \brief The entity that is being instantiated. 4490 uintptr_t Entity; 4491 4492 /// \brief The list of template arguments we are substituting, if they 4493 /// are not part of the entity. 4494 const TemplateArgument *TemplateArgs; 4495 4496 /// \brief The number of template arguments in TemplateArgs. 4497 unsigned NumTemplateArgs; 4498 4499 /// \brief The template deduction info object associated with the 4500 /// substitution or checking of explicit or deduced template arguments. 4501 sema::TemplateDeductionInfo *DeductionInfo; 4502 4503 /// \brief The source range that covers the construct that cause 4504 /// the instantiation, e.g., the template-id that causes a class 4505 /// template instantiation. 4506 SourceRange InstantiationRange; 4507 4508 ActiveTemplateInstantiation() 4509 : Kind(TemplateInstantiation), Template(0), Entity(0), TemplateArgs(0), 4510 NumTemplateArgs(0), DeductionInfo(0) {} 4511 4512 /// \brief Determines whether this template is an actual instantiation 4513 /// that should be counted toward the maximum instantiation depth. 4514 bool isInstantiationRecord() const; 4515 4516 friend bool operator==(const ActiveTemplateInstantiation &X, 4517 const ActiveTemplateInstantiation &Y) { 4518 if (X.Kind != Y.Kind) 4519 return false; 4520 4521 if (X.Entity != Y.Entity) 4522 return false; 4523 4524 switch (X.Kind) { 4525 case TemplateInstantiation: 4526 return true; 4527 4528 case PriorTemplateArgumentSubstitution: 4529 case DefaultTemplateArgumentChecking: 4530 if (X.Template != Y.Template) 4531 return false; 4532 4533 // Fall through 4534 4535 case DefaultTemplateArgumentInstantiation: 4536 case ExplicitTemplateArgumentSubstitution: 4537 case DeducedTemplateArgumentSubstitution: 4538 case DefaultFunctionArgumentInstantiation: 4539 return X.TemplateArgs == Y.TemplateArgs; 4540 4541 } 4542 4543 return true; 4544 } 4545 4546 friend bool operator!=(const ActiveTemplateInstantiation &X, 4547 const ActiveTemplateInstantiation &Y) { 4548 return !(X == Y); 4549 } 4550 }; 4551 4552 /// \brief List of active template instantiations. 4553 /// 4554 /// This vector is treated as a stack. As one template instantiation 4555 /// requires another template instantiation, additional 4556 /// instantiations are pushed onto the stack up to a 4557 /// user-configurable limit LangOptions::InstantiationDepth. 4558 SmallVector<ActiveTemplateInstantiation, 16> 4559 ActiveTemplateInstantiations; 4560 4561 /// \brief Whether we are in a SFINAE context that is not associated with 4562 /// template instantiation. 4563 /// 4564 /// This is used when setting up a SFINAE trap (\c see SFINAETrap) outside 4565 /// of a template instantiation or template argument deduction. 4566 bool InNonInstantiationSFINAEContext; 4567 4568 /// \brief The number of ActiveTemplateInstantiation entries in 4569 /// \c ActiveTemplateInstantiations that are not actual instantiations and, 4570 /// therefore, should not be counted as part of the instantiation depth. 4571 unsigned NonInstantiationEntries; 4572 4573 /// \brief The last template from which a template instantiation 4574 /// error or warning was produced. 4575 /// 4576 /// This value is used to suppress printing of redundant template 4577 /// instantiation backtraces when there are multiple errors in the 4578 /// same instantiation. FIXME: Does this belong in Sema? It's tough 4579 /// to implement it anywhere else. 4580 ActiveTemplateInstantiation LastTemplateInstantiationErrorContext; 4581 4582 /// \brief The current index into pack expansion arguments that will be 4583 /// used for substitution of parameter packs. 4584 /// 4585 /// The pack expansion index will be -1 to indicate that parameter packs 4586 /// should be instantiated as themselves. Otherwise, the index specifies 4587 /// which argument within the parameter pack will be used for substitution. 4588 int ArgumentPackSubstitutionIndex; 4589 4590 /// \brief RAII object used to change the argument pack substitution index 4591 /// within a \c Sema object. 4592 /// 4593 /// See \c ArgumentPackSubstitutionIndex for more information. 4594 class ArgumentPackSubstitutionIndexRAII { 4595 Sema &Self; 4596 int OldSubstitutionIndex; 4597 4598 public: 4599 ArgumentPackSubstitutionIndexRAII(Sema &Self, int NewSubstitutionIndex) 4600 : Self(Self), OldSubstitutionIndex(Self.ArgumentPackSubstitutionIndex) { 4601 Self.ArgumentPackSubstitutionIndex = NewSubstitutionIndex; 4602 } 4603 4604 ~ArgumentPackSubstitutionIndexRAII() { 4605 Self.ArgumentPackSubstitutionIndex = OldSubstitutionIndex; 4606 } 4607 }; 4608 4609 friend class ArgumentPackSubstitutionRAII; 4610 4611 /// \brief The stack of calls expression undergoing template instantiation. 4612 /// 4613 /// The top of this stack is used by a fixit instantiating unresolved 4614 /// function calls to fix the AST to match the textual change it prints. 4615 SmallVector<CallExpr *, 8> CallsUndergoingInstantiation; 4616 4617 /// \brief For each declaration that involved template argument deduction, the 4618 /// set of diagnostics that were suppressed during that template argument 4619 /// deduction. 4620 /// 4621 /// FIXME: Serialize this structure to the AST file. 4622 llvm::DenseMap<Decl *, SmallVector<PartialDiagnosticAt, 1> > 4623 SuppressedDiagnostics; 4624 4625 /// \brief A stack object to be created when performing template 4626 /// instantiation. 4627 /// 4628 /// Construction of an object of type \c InstantiatingTemplate 4629 /// pushes the current instantiation onto the stack of active 4630 /// instantiations. If the size of this stack exceeds the maximum 4631 /// number of recursive template instantiations, construction 4632 /// produces an error and evaluates true. 4633 /// 4634 /// Destruction of this object will pop the named instantiation off 4635 /// the stack. 4636 struct InstantiatingTemplate { 4637 /// \brief Note that we are instantiating a class template, 4638 /// function template, or a member thereof. 4639 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4640 Decl *Entity, 4641 SourceRange InstantiationRange = SourceRange()); 4642 4643 /// \brief Note that we are instantiating a default argument in a 4644 /// template-id. 4645 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4646 TemplateDecl *Template, 4647 const TemplateArgument *TemplateArgs, 4648 unsigned NumTemplateArgs, 4649 SourceRange InstantiationRange = SourceRange()); 4650 4651 /// \brief Note that we are instantiating a default argument in a 4652 /// template-id. 4653 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4654 FunctionTemplateDecl *FunctionTemplate, 4655 const TemplateArgument *TemplateArgs, 4656 unsigned NumTemplateArgs, 4657 ActiveTemplateInstantiation::InstantiationKind Kind, 4658 sema::TemplateDeductionInfo &DeductionInfo, 4659 SourceRange InstantiationRange = SourceRange()); 4660 4661 /// \brief Note that we are instantiating as part of template 4662 /// argument deduction for a class template partial 4663 /// specialization. 4664 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4665 ClassTemplatePartialSpecializationDecl *PartialSpec, 4666 const TemplateArgument *TemplateArgs, 4667 unsigned NumTemplateArgs, 4668 sema::TemplateDeductionInfo &DeductionInfo, 4669 SourceRange InstantiationRange = SourceRange()); 4670 4671 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4672 ParmVarDecl *Param, 4673 const TemplateArgument *TemplateArgs, 4674 unsigned NumTemplateArgs, 4675 SourceRange InstantiationRange = SourceRange()); 4676 4677 /// \brief Note that we are substituting prior template arguments into a 4678 /// non-type or template template parameter. 4679 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4680 NamedDecl *Template, 4681 NonTypeTemplateParmDecl *Param, 4682 const TemplateArgument *TemplateArgs, 4683 unsigned NumTemplateArgs, 4684 SourceRange InstantiationRange); 4685 4686 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4687 NamedDecl *Template, 4688 TemplateTemplateParmDecl *Param, 4689 const TemplateArgument *TemplateArgs, 4690 unsigned NumTemplateArgs, 4691 SourceRange InstantiationRange); 4692 4693 /// \brief Note that we are checking the default template argument 4694 /// against the template parameter for a given template-id. 4695 InstantiatingTemplate(Sema &SemaRef, SourceLocation PointOfInstantiation, 4696 TemplateDecl *Template, 4697 NamedDecl *Param, 4698 const TemplateArgument *TemplateArgs, 4699 unsigned NumTemplateArgs, 4700 SourceRange InstantiationRange); 4701 4702 4703 /// \brief Note that we have finished instantiating this template. 4704 void Clear(); 4705 4706 ~InstantiatingTemplate() { Clear(); } 4707 4708 /// \brief Determines whether we have exceeded the maximum 4709 /// recursive template instantiations. 4710 operator bool() const { return Invalid; } 4711 4712 private: 4713 Sema &SemaRef; 4714 bool Invalid; 4715 bool SavedInNonInstantiationSFINAEContext; 4716 bool CheckInstantiationDepth(SourceLocation PointOfInstantiation, 4717 SourceRange InstantiationRange); 4718 4719 InstantiatingTemplate(const InstantiatingTemplate&); // not implemented 4720 4721 InstantiatingTemplate& 4722 operator=(const InstantiatingTemplate&); // not implemented 4723 }; 4724 4725 void PrintInstantiationStack(); 4726 4727 /// \brief Determines whether we are currently in a context where 4728 /// template argument substitution failures are not considered 4729 /// errors. 4730 /// 4731 /// \returns An empty \c llvm::Optional if we're not in a SFINAE context. 4732 /// Otherwise, contains a pointer that, if non-NULL, contains the nearest 4733 /// template-deduction context object, which can be used to capture 4734 /// diagnostics that will be suppressed. 4735 llvm::Optional<sema::TemplateDeductionInfo *> isSFINAEContext() const; 4736 4737 /// \brief RAII class used to determine whether SFINAE has 4738 /// trapped any errors that occur during template argument 4739 /// deduction.` 4740 class SFINAETrap { 4741 Sema &SemaRef; 4742 unsigned PrevSFINAEErrors; 4743 bool PrevInNonInstantiationSFINAEContext; 4744 bool PrevAccessCheckingSFINAE; 4745 4746 public: 4747 explicit SFINAETrap(Sema &SemaRef, bool AccessCheckingSFINAE = false) 4748 : SemaRef(SemaRef), PrevSFINAEErrors(SemaRef.NumSFINAEErrors), 4749 PrevInNonInstantiationSFINAEContext( 4750 SemaRef.InNonInstantiationSFINAEContext), 4751 PrevAccessCheckingSFINAE(SemaRef.AccessCheckingSFINAE) 4752 { 4753 if (!SemaRef.isSFINAEContext()) 4754 SemaRef.InNonInstantiationSFINAEContext = true; 4755 SemaRef.AccessCheckingSFINAE = AccessCheckingSFINAE; 4756 } 4757 4758 ~SFINAETrap() { 4759 SemaRef.NumSFINAEErrors = PrevSFINAEErrors; 4760 SemaRef.InNonInstantiationSFINAEContext 4761 = PrevInNonInstantiationSFINAEContext; 4762 SemaRef.AccessCheckingSFINAE = PrevAccessCheckingSFINAE; 4763 } 4764 4765 /// \brief Determine whether any SFINAE errors have been trapped. 4766 bool hasErrorOccurred() const { 4767 return SemaRef.NumSFINAEErrors > PrevSFINAEErrors; 4768 } 4769 }; 4770 4771 /// \brief The current instantiation scope used to store local 4772 /// variables. 4773 LocalInstantiationScope *CurrentInstantiationScope; 4774 4775 /// \brief The number of typos corrected by CorrectTypo. 4776 unsigned TyposCorrected; 4777 4778 typedef llvm::DenseMap<IdentifierInfo *, TypoCorrection> 4779 UnqualifiedTyposCorrectedMap; 4780 4781 /// \brief A cache containing the results of typo correction for unqualified 4782 /// name lookup. 4783 /// 4784 /// The string is the string that we corrected to (which may be empty, if 4785 /// there was no correction), while the boolean will be true when the 4786 /// string represents a keyword. 4787 UnqualifiedTyposCorrectedMap UnqualifiedTyposCorrected; 4788 4789 /// \brief Worker object for performing CFG-based warnings. 4790 sema::AnalysisBasedWarnings AnalysisWarnings; 4791 4792 /// \brief An entity for which implicit template instantiation is required. 4793 /// 4794 /// The source location associated with the declaration is the first place in 4795 /// the source code where the declaration was "used". It is not necessarily 4796 /// the point of instantiation (which will be either before or after the 4797 /// namespace-scope declaration that triggered this implicit instantiation), 4798 /// However, it is the location that diagnostics should generally refer to, 4799 /// because users will need to know what code triggered the instantiation. 4800 typedef std::pair<ValueDecl *, SourceLocation> PendingImplicitInstantiation; 4801 4802 /// \brief The queue of implicit template instantiations that are required 4803 /// but have not yet been performed. 4804 std::deque<PendingImplicitInstantiation> PendingInstantiations; 4805 4806 /// \brief The queue of implicit template instantiations that are required 4807 /// and must be performed within the current local scope. 4808 /// 4809 /// This queue is only used for member functions of local classes in 4810 /// templates, which must be instantiated in the same scope as their 4811 /// enclosing function, so that they can reference function-local 4812 /// types, static variables, enumerators, etc. 4813 std::deque<PendingImplicitInstantiation> PendingLocalImplicitInstantiations; 4814 4815 void PerformPendingInstantiations(bool LocalOnly = false); 4816 4817 TypeSourceInfo *SubstType(TypeSourceInfo *T, 4818 const MultiLevelTemplateArgumentList &TemplateArgs, 4819 SourceLocation Loc, DeclarationName Entity); 4820 4821 QualType SubstType(QualType T, 4822 const MultiLevelTemplateArgumentList &TemplateArgs, 4823 SourceLocation Loc, DeclarationName Entity); 4824 4825 TypeSourceInfo *SubstType(TypeLoc TL, 4826 const MultiLevelTemplateArgumentList &TemplateArgs, 4827 SourceLocation Loc, DeclarationName Entity); 4828 4829 TypeSourceInfo *SubstFunctionDeclType(TypeSourceInfo *T, 4830 const MultiLevelTemplateArgumentList &TemplateArgs, 4831 SourceLocation Loc, 4832 DeclarationName Entity); 4833 ParmVarDecl *SubstParmVarDecl(ParmVarDecl *D, 4834 const MultiLevelTemplateArgumentList &TemplateArgs, 4835 int indexAdjustment, 4836 llvm::Optional<unsigned> NumExpansions); 4837 bool SubstParmTypes(SourceLocation Loc, 4838 ParmVarDecl **Params, unsigned NumParams, 4839 const MultiLevelTemplateArgumentList &TemplateArgs, 4840 SmallVectorImpl<QualType> &ParamTypes, 4841 SmallVectorImpl<ParmVarDecl *> *OutParams = 0); 4842 ExprResult SubstExpr(Expr *E, 4843 const MultiLevelTemplateArgumentList &TemplateArgs); 4844 4845 /// \brief Substitute the given template arguments into a list of 4846 /// expressions, expanding pack expansions if required. 4847 /// 4848 /// \param Exprs The list of expressions to substitute into. 4849 /// 4850 /// \param NumExprs The number of expressions in \p Exprs. 4851 /// 4852 /// \param IsCall Whether this is some form of call, in which case 4853 /// default arguments will be dropped. 4854 /// 4855 /// \param TemplateArgs The set of template arguments to substitute. 4856 /// 4857 /// \param Outputs Will receive all of the substituted arguments. 4858 /// 4859 /// \returns true if an error occurred, false otherwise. 4860 bool SubstExprs(Expr **Exprs, unsigned NumExprs, bool IsCall, 4861 const MultiLevelTemplateArgumentList &TemplateArgs, 4862 SmallVectorImpl<Expr *> &Outputs); 4863 4864 StmtResult SubstStmt(Stmt *S, 4865 const MultiLevelTemplateArgumentList &TemplateArgs); 4866 4867 Decl *SubstDecl(Decl *D, DeclContext *Owner, 4868 const MultiLevelTemplateArgumentList &TemplateArgs); 4869 4870 bool 4871 SubstBaseSpecifiers(CXXRecordDecl *Instantiation, 4872 CXXRecordDecl *Pattern, 4873 const MultiLevelTemplateArgumentList &TemplateArgs); 4874 4875 bool 4876 InstantiateClass(SourceLocation PointOfInstantiation, 4877 CXXRecordDecl *Instantiation, CXXRecordDecl *Pattern, 4878 const MultiLevelTemplateArgumentList &TemplateArgs, 4879 TemplateSpecializationKind TSK, 4880 bool Complain = true); 4881 4882 void InstantiateAttrs(const MultiLevelTemplateArgumentList &TemplateArgs, 4883 const Decl *Pattern, Decl *Inst); 4884 4885 bool 4886 InstantiateClassTemplateSpecialization(SourceLocation PointOfInstantiation, 4887 ClassTemplateSpecializationDecl *ClassTemplateSpec, 4888 TemplateSpecializationKind TSK, 4889 bool Complain = true); 4890 4891 void InstantiateClassMembers(SourceLocation PointOfInstantiation, 4892 CXXRecordDecl *Instantiation, 4893 const MultiLevelTemplateArgumentList &TemplateArgs, 4894 TemplateSpecializationKind TSK); 4895 4896 void InstantiateClassTemplateSpecializationMembers( 4897 SourceLocation PointOfInstantiation, 4898 ClassTemplateSpecializationDecl *ClassTemplateSpec, 4899 TemplateSpecializationKind TSK); 4900 4901 NestedNameSpecifierLoc 4902 SubstNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS, 4903 const MultiLevelTemplateArgumentList &TemplateArgs); 4904 4905 DeclarationNameInfo 4906 SubstDeclarationNameInfo(const DeclarationNameInfo &NameInfo, 4907 const MultiLevelTemplateArgumentList &TemplateArgs); 4908 TemplateName 4909 SubstTemplateName(NestedNameSpecifierLoc QualifierLoc, TemplateName Name, 4910 SourceLocation Loc, 4911 const MultiLevelTemplateArgumentList &TemplateArgs); 4912 bool Subst(const TemplateArgumentLoc *Args, unsigned NumArgs, 4913 TemplateArgumentListInfo &Result, 4914 const MultiLevelTemplateArgumentList &TemplateArgs); 4915 4916 void InstantiateFunctionDefinition(SourceLocation PointOfInstantiation, 4917 FunctionDecl *Function, 4918 bool Recursive = false, 4919 bool DefinitionRequired = false); 4920 void InstantiateStaticDataMemberDefinition( 4921 SourceLocation PointOfInstantiation, 4922 VarDecl *Var, 4923 bool Recursive = false, 4924 bool DefinitionRequired = false); 4925 4926 void InstantiateMemInitializers(CXXConstructorDecl *New, 4927 const CXXConstructorDecl *Tmpl, 4928 const MultiLevelTemplateArgumentList &TemplateArgs); 4929 bool InstantiateInitializer(Expr *Init, 4930 const MultiLevelTemplateArgumentList &TemplateArgs, 4931 SourceLocation &LParenLoc, 4932 ASTOwningVector<Expr*> &NewArgs, 4933 SourceLocation &RParenLoc); 4934 4935 NamedDecl *FindInstantiatedDecl(SourceLocation Loc, NamedDecl *D, 4936 const MultiLevelTemplateArgumentList &TemplateArgs); 4937 DeclContext *FindInstantiatedContext(SourceLocation Loc, DeclContext *DC, 4938 const MultiLevelTemplateArgumentList &TemplateArgs); 4939 4940 // Objective-C declarations. 4941 Decl *ActOnStartClassInterface(SourceLocation AtInterfaceLoc, 4942 IdentifierInfo *ClassName, 4943 SourceLocation ClassLoc, 4944 IdentifierInfo *SuperName, 4945 SourceLocation SuperLoc, 4946 Decl * const *ProtoRefs, 4947 unsigned NumProtoRefs, 4948 const SourceLocation *ProtoLocs, 4949 SourceLocation EndProtoLoc, 4950 AttributeList *AttrList); 4951 4952 Decl *ActOnCompatiblityAlias( 4953 SourceLocation AtCompatibilityAliasLoc, 4954 IdentifierInfo *AliasName, SourceLocation AliasLocation, 4955 IdentifierInfo *ClassName, SourceLocation ClassLocation); 4956 4957 bool CheckForwardProtocolDeclarationForCircularDependency( 4958 IdentifierInfo *PName, 4959 SourceLocation &PLoc, SourceLocation PrevLoc, 4960 const ObjCList<ObjCProtocolDecl> &PList); 4961 4962 Decl *ActOnStartProtocolInterface( 4963 SourceLocation AtProtoInterfaceLoc, 4964 IdentifierInfo *ProtocolName, SourceLocation ProtocolLoc, 4965 Decl * const *ProtoRefNames, unsigned NumProtoRefs, 4966 const SourceLocation *ProtoLocs, 4967 SourceLocation EndProtoLoc, 4968 AttributeList *AttrList); 4969 4970 Decl *ActOnStartCategoryInterface(SourceLocation AtInterfaceLoc, 4971 IdentifierInfo *ClassName, 4972 SourceLocation ClassLoc, 4973 IdentifierInfo *CategoryName, 4974 SourceLocation CategoryLoc, 4975 Decl * const *ProtoRefs, 4976 unsigned NumProtoRefs, 4977 const SourceLocation *ProtoLocs, 4978 SourceLocation EndProtoLoc); 4979 4980 Decl *ActOnStartClassImplementation( 4981 SourceLocation AtClassImplLoc, 4982 IdentifierInfo *ClassName, SourceLocation ClassLoc, 4983 IdentifierInfo *SuperClassname, 4984 SourceLocation SuperClassLoc); 4985 4986 Decl *ActOnStartCategoryImplementation(SourceLocation AtCatImplLoc, 4987 IdentifierInfo *ClassName, 4988 SourceLocation ClassLoc, 4989 IdentifierInfo *CatName, 4990 SourceLocation CatLoc); 4991 4992 Decl *ActOnForwardClassDeclaration(SourceLocation Loc, 4993 IdentifierInfo **IdentList, 4994 SourceLocation *IdentLocs, 4995 unsigned NumElts); 4996 4997 Decl *ActOnForwardProtocolDeclaration(SourceLocation AtProtoclLoc, 4998 const IdentifierLocPair *IdentList, 4999 unsigned NumElts, 5000 AttributeList *attrList); 5001 5002 void FindProtocolDeclaration(bool WarnOnDeclarations, 5003 const IdentifierLocPair *ProtocolId, 5004 unsigned NumProtocols, 5005 SmallVectorImpl<Decl *> &Protocols); 5006 5007 /// Ensure attributes are consistent with type. 5008 /// \param [in, out] Attributes The attributes to check; they will 5009 /// be modified to be consistent with \arg PropertyTy. 5010 void CheckObjCPropertyAttributes(Decl *PropertyPtrTy, 5011 SourceLocation Loc, 5012 unsigned &Attributes); 5013 5014 /// Process the specified property declaration and create decls for the 5015 /// setters and getters as needed. 5016 /// \param property The property declaration being processed 5017 /// \param DC The semantic container for the property 5018 /// \param redeclaredProperty Declaration for property if redeclared 5019 /// in class extension. 5020 /// \param lexicalDC Container for redeclaredProperty. 5021 void ProcessPropertyDecl(ObjCPropertyDecl *property, 5022 ObjCContainerDecl *DC, 5023 ObjCPropertyDecl *redeclaredProperty = 0, 5024 ObjCContainerDecl *lexicalDC = 0); 5025 5026 void DiagnosePropertyMismatch(ObjCPropertyDecl *Property, 5027 ObjCPropertyDecl *SuperProperty, 5028 const IdentifierInfo *Name); 5029 void ComparePropertiesInBaseAndSuper(ObjCInterfaceDecl *IDecl); 5030 5031 void CompareMethodParamsInBaseAndSuper(Decl *IDecl, 5032 ObjCMethodDecl *MethodDecl, 5033 bool IsInstance); 5034 5035 void CompareProperties(Decl *CDecl, Decl *MergeProtocols); 5036 5037 void DiagnoseClassExtensionDupMethods(ObjCCategoryDecl *CAT, 5038 ObjCInterfaceDecl *ID); 5039 5040 void MatchOneProtocolPropertiesInClass(Decl *CDecl, 5041 ObjCProtocolDecl *PDecl); 5042 5043 void ActOnAtEnd(Scope *S, SourceRange AtEnd, Decl *classDecl, 5044 Decl **allMethods = 0, unsigned allNum = 0, 5045 Decl **allProperties = 0, unsigned pNum = 0, 5046 DeclGroupPtrTy *allTUVars = 0, unsigned tuvNum = 0); 5047 5048 Decl *ActOnProperty(Scope *S, SourceLocation AtLoc, 5049 FieldDeclarator &FD, ObjCDeclSpec &ODS, 5050 Selector GetterSel, Selector SetterSel, 5051 Decl *ClassCategory, 5052 bool *OverridingProperty, 5053 tok::ObjCKeywordKind MethodImplKind, 5054 DeclContext *lexicalDC = 0); 5055 5056 Decl *ActOnPropertyImplDecl(Scope *S, 5057 SourceLocation AtLoc, 5058 SourceLocation PropertyLoc, 5059 bool ImplKind,Decl *ClassImplDecl, 5060 IdentifierInfo *PropertyId, 5061 IdentifierInfo *PropertyIvar, 5062 SourceLocation PropertyIvarLoc); 5063 5064 enum ObjCSpecialMethodKind { 5065 OSMK_None, 5066 OSMK_Alloc, 5067 OSMK_New, 5068 OSMK_Copy, 5069 OSMK_RetainingInit, 5070 OSMK_NonRetainingInit 5071 }; 5072 5073 struct ObjCArgInfo { 5074 IdentifierInfo *Name; 5075 SourceLocation NameLoc; 5076 // The Type is null if no type was specified, and the DeclSpec is invalid 5077 // in this case. 5078 ParsedType Type; 5079 ObjCDeclSpec DeclSpec; 5080 5081 /// ArgAttrs - Attribute list for this argument. 5082 AttributeList *ArgAttrs; 5083 }; 5084 5085 Decl *ActOnMethodDeclaration( 5086 Scope *S, 5087 SourceLocation BeginLoc, // location of the + or -. 5088 SourceLocation EndLoc, // location of the ; or {. 5089 tok::TokenKind MethodType, 5090 Decl *ClassDecl, ObjCDeclSpec &ReturnQT, ParsedType ReturnType, 5091 SourceLocation SelectorStartLoc, Selector Sel, 5092 // optional arguments. The number of types/arguments is obtained 5093 // from the Sel.getNumArgs(). 5094 ObjCArgInfo *ArgInfo, 5095 DeclaratorChunk::ParamInfo *CParamInfo, unsigned CNumArgs, // c-style args 5096 AttributeList *AttrList, tok::ObjCKeywordKind MethodImplKind, 5097 bool isVariadic, bool MethodDefinition); 5098 5099 // Helper method for ActOnClassMethod/ActOnInstanceMethod. 5100 // Will search "local" class/category implementations for a method decl. 5101 // Will also search in class's root looking for instance method. 5102 // Returns 0 if no method is found. 5103 ObjCMethodDecl *LookupPrivateClassMethod(Selector Sel, 5104 ObjCInterfaceDecl *CDecl); 5105 ObjCMethodDecl *LookupPrivateInstanceMethod(Selector Sel, 5106 ObjCInterfaceDecl *ClassDecl); 5107 ObjCMethodDecl *LookupMethodInQualifiedType(Selector Sel, 5108 const ObjCObjectPointerType *OPT, 5109 bool IsInstance); 5110 5111 bool inferObjCARCLifetime(ValueDecl *decl); 5112 5113 ExprResult 5114 HandleExprPropertyRefExpr(const ObjCObjectPointerType *OPT, 5115 Expr *BaseExpr, 5116 SourceLocation OpLoc, 5117 DeclarationName MemberName, 5118 SourceLocation MemberLoc, 5119 SourceLocation SuperLoc, QualType SuperType, 5120 bool Super); 5121 5122 ExprResult 5123 ActOnClassPropertyRefExpr(IdentifierInfo &receiverName, 5124 IdentifierInfo &propertyName, 5125 SourceLocation receiverNameLoc, 5126 SourceLocation propertyNameLoc); 5127 5128 ObjCMethodDecl *tryCaptureObjCSelf(); 5129 5130 /// \brief Describes the kind of message expression indicated by a message 5131 /// send that starts with an identifier. 5132 enum ObjCMessageKind { 5133 /// \brief The message is sent to 'super'. 5134 ObjCSuperMessage, 5135 /// \brief The message is an instance message. 5136 ObjCInstanceMessage, 5137 /// \brief The message is a class message, and the identifier is a type 5138 /// name. 5139 ObjCClassMessage 5140 }; 5141 5142 ObjCMessageKind getObjCMessageKind(Scope *S, 5143 IdentifierInfo *Name, 5144 SourceLocation NameLoc, 5145 bool IsSuper, 5146 bool HasTrailingDot, 5147 ParsedType &ReceiverType); 5148 5149 ExprResult ActOnSuperMessage(Scope *S, SourceLocation SuperLoc, 5150 Selector Sel, 5151 SourceLocation LBracLoc, 5152 SourceLocation SelectorLoc, 5153 SourceLocation RBracLoc, 5154 MultiExprArg Args); 5155 5156 ExprResult BuildClassMessage(TypeSourceInfo *ReceiverTypeInfo, 5157 QualType ReceiverType, 5158 SourceLocation SuperLoc, 5159 Selector Sel, 5160 ObjCMethodDecl *Method, 5161 SourceLocation LBracLoc, 5162 SourceLocation SelectorLoc, 5163 SourceLocation RBracLoc, 5164 MultiExprArg Args); 5165 5166 ExprResult ActOnClassMessage(Scope *S, 5167 ParsedType Receiver, 5168 Selector Sel, 5169 SourceLocation LBracLoc, 5170 SourceLocation SelectorLoc, 5171 SourceLocation RBracLoc, 5172 MultiExprArg Args); 5173 5174 ExprResult BuildInstanceMessage(Expr *Receiver, 5175 QualType ReceiverType, 5176 SourceLocation SuperLoc, 5177 Selector Sel, 5178 ObjCMethodDecl *Method, 5179 SourceLocation LBracLoc, 5180 SourceLocation SelectorLoc, 5181 SourceLocation RBracLoc, 5182 MultiExprArg Args); 5183 5184 ExprResult ActOnInstanceMessage(Scope *S, 5185 Expr *Receiver, 5186 Selector Sel, 5187 SourceLocation LBracLoc, 5188 SourceLocation SelectorLoc, 5189 SourceLocation RBracLoc, 5190 MultiExprArg Args); 5191 5192 ExprResult BuildObjCBridgedCast(SourceLocation LParenLoc, 5193 ObjCBridgeCastKind Kind, 5194 SourceLocation BridgeKeywordLoc, 5195 TypeSourceInfo *TSInfo, 5196 Expr *SubExpr); 5197 5198 ExprResult ActOnObjCBridgedCast(Scope *S, 5199 SourceLocation LParenLoc, 5200 ObjCBridgeCastKind Kind, 5201 SourceLocation BridgeKeywordLoc, 5202 ParsedType Type, 5203 SourceLocation RParenLoc, 5204 Expr *SubExpr); 5205 5206 bool checkInitMethod(ObjCMethodDecl *method, QualType receiverTypeIfCall); 5207 5208 /// \brief Check whether the given new method is a valid override of the 5209 /// given overridden method, and set any properties that should be inherited. 5210 /// 5211 /// \returns True if an error occurred. 5212 bool CheckObjCMethodOverride(ObjCMethodDecl *NewMethod, 5213 const ObjCMethodDecl *Overridden, 5214 bool IsImplementation); 5215 5216 /// \brief Check whether the given method overrides any methods in its class, 5217 /// calling \c CheckObjCMethodOverride for each overridden method. 5218 bool CheckObjCMethodOverrides(ObjCMethodDecl *NewMethod, DeclContext *DC); 5219 5220 enum PragmaOptionsAlignKind { 5221 POAK_Native, // #pragma options align=native 5222 POAK_Natural, // #pragma options align=natural 5223 POAK_Packed, // #pragma options align=packed 5224 POAK_Power, // #pragma options align=power 5225 POAK_Mac68k, // #pragma options align=mac68k 5226 POAK_Reset // #pragma options align=reset 5227 }; 5228 5229 /// ActOnPragmaOptionsAlign - Called on well formed #pragma options align. 5230 void ActOnPragmaOptionsAlign(PragmaOptionsAlignKind Kind, 5231 SourceLocation PragmaLoc, 5232 SourceLocation KindLoc); 5233 5234 enum PragmaPackKind { 5235 PPK_Default, // #pragma pack([n]) 5236 PPK_Show, // #pragma pack(show), only supported by MSVC. 5237 PPK_Push, // #pragma pack(push, [identifier], [n]) 5238 PPK_Pop // #pragma pack(pop, [identifier], [n]) 5239 }; 5240 5241 enum PragmaMSStructKind { 5242 PMSST_OFF, // #pragms ms_struct off 5243 PMSST_ON // #pragms ms_struct on 5244 }; 5245 5246 /// ActOnPragmaPack - Called on well formed #pragma pack(...). 5247 void ActOnPragmaPack(PragmaPackKind Kind, 5248 IdentifierInfo *Name, 5249 Expr *Alignment, 5250 SourceLocation PragmaLoc, 5251 SourceLocation LParenLoc, 5252 SourceLocation RParenLoc); 5253 5254 /// ActOnPragmaMSStruct - Called on well formed #pragms ms_struct [on|off]. 5255 void ActOnPragmaMSStruct(PragmaMSStructKind Kind); 5256 5257 /// ActOnPragmaUnused - Called on well-formed '#pragma unused'. 5258 void ActOnPragmaUnused(const Token &Identifier, 5259 Scope *curScope, 5260 SourceLocation PragmaLoc); 5261 5262 /// ActOnPragmaVisibility - Called on well formed #pragma GCC visibility... . 5263 void ActOnPragmaVisibility(bool IsPush, const IdentifierInfo* VisType, 5264 SourceLocation PragmaLoc); 5265 5266 NamedDecl *DeclClonePragmaWeak(NamedDecl *ND, IdentifierInfo *II); 5267 void DeclApplyPragmaWeak(Scope *S, NamedDecl *ND, WeakInfo &W); 5268 5269 /// ActOnPragmaWeakID - Called on well formed #pragma weak ident. 5270 void ActOnPragmaWeakID(IdentifierInfo* WeakName, 5271 SourceLocation PragmaLoc, 5272 SourceLocation WeakNameLoc); 5273 5274 /// ActOnPragmaWeakAlias - Called on well formed #pragma weak ident = ident. 5275 void ActOnPragmaWeakAlias(IdentifierInfo* WeakName, 5276 IdentifierInfo* AliasName, 5277 SourceLocation PragmaLoc, 5278 SourceLocation WeakNameLoc, 5279 SourceLocation AliasNameLoc); 5280 5281 /// ActOnPragmaFPContract - Called on well formed 5282 /// #pragma {STDC,OPENCL} FP_CONTRACT 5283 void ActOnPragmaFPContract(tok::OnOffSwitch OOS); 5284 5285 /// AddAlignmentAttributesForRecord - Adds any needed alignment attributes to 5286 /// a the record decl, to handle '#pragma pack' and '#pragma options align'. 5287 void AddAlignmentAttributesForRecord(RecordDecl *RD); 5288 5289 /// AddMsStructLayoutForRecord - Adds ms_struct layout attribute to record. 5290 void AddMsStructLayoutForRecord(RecordDecl *RD); 5291 5292 /// FreePackedContext - Deallocate and null out PackContext. 5293 void FreePackedContext(); 5294 5295 /// PushNamespaceVisibilityAttr - Note that we've entered a 5296 /// namespace with a visibility attribute. 5297 void PushNamespaceVisibilityAttr(const VisibilityAttr *Attr); 5298 5299 /// AddPushedVisibilityAttribute - If '#pragma GCC visibility' was used, 5300 /// add an appropriate visibility attribute. 5301 void AddPushedVisibilityAttribute(Decl *RD); 5302 5303 /// PopPragmaVisibility - Pop the top element of the visibility stack; used 5304 /// for '#pragma GCC visibility' and visibility attributes on namespaces. 5305 void PopPragmaVisibility(); 5306 5307 /// FreeVisContext - Deallocate and null out VisContext. 5308 void FreeVisContext(); 5309 5310 /// AddAlignedAttr - Adds an aligned attribute to a particular declaration. 5311 void AddAlignedAttr(SourceLocation AttrLoc, Decl *D, Expr *E); 5312 void AddAlignedAttr(SourceLocation AttrLoc, Decl *D, TypeSourceInfo *T); 5313 5314 /// CastCategory - Get the correct forwarded implicit cast result category 5315 /// from the inner expression. 5316 ExprValueKind CastCategory(Expr *E); 5317 5318 /// \brief The kind of conversion being performed. 5319 enum CheckedConversionKind { 5320 /// \brief An implicit conversion. 5321 CCK_ImplicitConversion, 5322 /// \brief A C-style cast. 5323 CCK_CStyleCast, 5324 /// \brief A functional-style cast. 5325 CCK_FunctionalCast, 5326 /// \brief A cast other than a C-style cast. 5327 CCK_OtherCast 5328 }; 5329 5330 /// ImpCastExprToType - If Expr is not of type 'Type', insert an implicit 5331 /// cast. If there is already an implicit cast, merge into the existing one. 5332 /// If isLvalue, the result of the cast is an lvalue. 5333 ExprResult ImpCastExprToType(Expr *E, QualType Type, CastKind CK, 5334 ExprValueKind VK = VK_RValue, 5335 const CXXCastPath *BasePath = 0, 5336 CheckedConversionKind CCK 5337 = CCK_ImplicitConversion); 5338 5339 /// ScalarTypeToBooleanCastKind - Returns the cast kind corresponding 5340 /// to the conversion from scalar type ScalarTy to the Boolean type. 5341 static CastKind ScalarTypeToBooleanCastKind(QualType ScalarTy); 5342 5343 /// IgnoredValueConversions - Given that an expression's result is 5344 /// syntactically ignored, perform any conversions that are 5345 /// required. 5346 ExprResult IgnoredValueConversions(Expr *E); 5347 5348 // UsualUnaryConversions - promotes integers (C99 6.3.1.1p2) and converts 5349 // functions and arrays to their respective pointers (C99 6.3.2.1). 5350 ExprResult UsualUnaryConversions(Expr *E); 5351 5352 // DefaultFunctionArrayConversion - converts functions and arrays 5353 // to their respective pointers (C99 6.3.2.1). 5354 ExprResult DefaultFunctionArrayConversion(Expr *E); 5355 5356 // DefaultFunctionArrayLvalueConversion - converts functions and 5357 // arrays to their respective pointers and performs the 5358 // lvalue-to-rvalue conversion. 5359 ExprResult DefaultFunctionArrayLvalueConversion(Expr *E); 5360 5361 // DefaultLvalueConversion - performs lvalue-to-rvalue conversion on 5362 // the operand. This is DefaultFunctionArrayLvalueConversion, 5363 // except that it assumes the operand isn't of function or array 5364 // type. 5365 ExprResult DefaultLvalueConversion(Expr *E); 5366 5367 // DefaultArgumentPromotion (C99 6.5.2.2p6). Used for function calls that 5368 // do not have a prototype. Integer promotions are performed on each 5369 // argument, and arguments that have type float are promoted to double. 5370 ExprResult DefaultArgumentPromotion(Expr *E); 5371 5372 // Used for emitting the right warning by DefaultVariadicArgumentPromotion 5373 enum VariadicCallType { 5374 VariadicFunction, 5375 VariadicBlock, 5376 VariadicMethod, 5377 VariadicConstructor, 5378 VariadicDoesNotApply 5379 }; 5380 5381 /// GatherArgumentsForCall - Collector argument expressions for various 5382 /// form of call prototypes. 5383 bool GatherArgumentsForCall(SourceLocation CallLoc, 5384 FunctionDecl *FDecl, 5385 const FunctionProtoType *Proto, 5386 unsigned FirstProtoArg, 5387 Expr **Args, unsigned NumArgs, 5388 SmallVector<Expr *, 8> &AllArgs, 5389 VariadicCallType CallType = VariadicDoesNotApply); 5390 5391 // DefaultVariadicArgumentPromotion - Like DefaultArgumentPromotion, but 5392 // will warn if the resulting type is not a POD type. 5393 ExprResult DefaultVariadicArgumentPromotion(Expr *E, VariadicCallType CT, 5394 FunctionDecl *FDecl); 5395 5396 // UsualArithmeticConversions - performs the UsualUnaryConversions on it's 5397 // operands and then handles various conversions that are common to binary 5398 // operators (C99 6.3.1.8). If both operands aren't arithmetic, this 5399 // routine returns the first non-arithmetic type found. The client is 5400 // responsible for emitting appropriate error diagnostics. 5401 QualType UsualArithmeticConversions(ExprResult &lExpr, ExprResult &rExpr, 5402 bool isCompAssign = false); 5403 5404 /// AssignConvertType - All of the 'assignment' semantic checks return this 5405 /// enum to indicate whether the assignment was allowed. These checks are 5406 /// done for simple assignments, as well as initialization, return from 5407 /// function, argument passing, etc. The query is phrased in terms of a 5408 /// source and destination type. 5409 enum AssignConvertType { 5410 /// Compatible - the types are compatible according to the standard. 5411 Compatible, 5412 5413 /// PointerToInt - The assignment converts a pointer to an int, which we 5414 /// accept as an extension. 5415 PointerToInt, 5416 5417 /// IntToPointer - The assignment converts an int to a pointer, which we 5418 /// accept as an extension. 5419 IntToPointer, 5420 5421 /// FunctionVoidPointer - The assignment is between a function pointer and 5422 /// void*, which the standard doesn't allow, but we accept as an extension. 5423 FunctionVoidPointer, 5424 5425 /// IncompatiblePointer - The assignment is between two pointers types that 5426 /// are not compatible, but we accept them as an extension. 5427 IncompatiblePointer, 5428 5429 /// IncompatiblePointer - The assignment is between two pointers types which 5430 /// point to integers which have a different sign, but are otherwise identical. 5431 /// This is a subset of the above, but broken out because it's by far the most 5432 /// common case of incompatible pointers. 5433 IncompatiblePointerSign, 5434 5435 /// CompatiblePointerDiscardsQualifiers - The assignment discards 5436 /// c/v/r qualifiers, which we accept as an extension. 5437 CompatiblePointerDiscardsQualifiers, 5438 5439 /// IncompatiblePointerDiscardsQualifiers - The assignment 5440 /// discards qualifiers that we don't permit to be discarded, 5441 /// like address spaces. 5442 IncompatiblePointerDiscardsQualifiers, 5443 5444 /// IncompatibleNestedPointerQualifiers - The assignment is between two 5445 /// nested pointer types, and the qualifiers other than the first two 5446 /// levels differ e.g. char ** -> const char **, but we accept them as an 5447 /// extension. 5448 IncompatibleNestedPointerQualifiers, 5449 5450 /// IncompatibleVectors - The assignment is between two vector types that 5451 /// have the same size, which we accept as an extension. 5452 IncompatibleVectors, 5453 5454 /// IntToBlockPointer - The assignment converts an int to a block 5455 /// pointer. We disallow this. 5456 IntToBlockPointer, 5457 5458 /// IncompatibleBlockPointer - The assignment is between two block 5459 /// pointers types that are not compatible. 5460 IncompatibleBlockPointer, 5461 5462 /// IncompatibleObjCQualifiedId - The assignment is between a qualified 5463 /// id type and something else (that is incompatible with it). For example, 5464 /// "id <XXX>" = "Foo *", where "Foo *" doesn't implement the XXX protocol. 5465 IncompatibleObjCQualifiedId, 5466 5467 /// IncompatibleObjCWeakRef - Assigning a weak-unavailable object to an 5468 /// object with __weak qualifier. 5469 IncompatibleObjCWeakRef, 5470 5471 /// Incompatible - We reject this conversion outright, it is invalid to 5472 /// represent it in the AST. 5473 Incompatible 5474 }; 5475 5476 /// DiagnoseAssignmentResult - Emit a diagnostic, if required, for the 5477 /// assignment conversion type specified by ConvTy. This returns true if the 5478 /// conversion was invalid or false if the conversion was accepted. 5479 bool DiagnoseAssignmentResult(AssignConvertType ConvTy, 5480 SourceLocation Loc, 5481 QualType DstType, QualType SrcType, 5482 Expr *SrcExpr, AssignmentAction Action, 5483 bool *Complained = 0); 5484 5485 /// CheckAssignmentConstraints - Perform type checking for assignment, 5486 /// argument passing, variable initialization, and function return values. 5487 /// C99 6.5.16. 5488 AssignConvertType CheckAssignmentConstraints(SourceLocation Loc, 5489 QualType lhs, QualType rhs); 5490 5491 /// Check assignment constraints and prepare for a conversion of the 5492 /// RHS to the LHS type. 5493 AssignConvertType CheckAssignmentConstraints(QualType lhs, ExprResult &rhs, 5494 CastKind &Kind); 5495 5496 // CheckSingleAssignmentConstraints - Currently used by 5497 // CheckAssignmentOperands, and ActOnReturnStmt. Prior to type checking, 5498 // this routine performs the default function/array converions. 5499 AssignConvertType CheckSingleAssignmentConstraints(QualType lhs, 5500 ExprResult &rExprRes); 5501 5502 // \brief If the lhs type is a transparent union, check whether we 5503 // can initialize the transparent union with the given expression. 5504 AssignConvertType CheckTransparentUnionArgumentConstraints(QualType lhs, 5505 ExprResult &rExpr); 5506 5507 bool IsStringLiteralToNonConstPointerConversion(Expr *From, QualType ToType); 5508 5509 bool CheckExceptionSpecCompatibility(Expr *From, QualType ToType); 5510 5511 ExprResult PerformImplicitConversion(Expr *From, QualType ToType, 5512 AssignmentAction Action, 5513 bool AllowExplicit = false); 5514 ExprResult PerformImplicitConversion(Expr *From, QualType ToType, 5515 AssignmentAction Action, 5516 bool AllowExplicit, 5517 ImplicitConversionSequence& ICS); 5518 ExprResult PerformImplicitConversion(Expr *From, QualType ToType, 5519 const ImplicitConversionSequence& ICS, 5520 AssignmentAction Action, 5521 CheckedConversionKind CCK 5522 = CCK_ImplicitConversion); 5523 ExprResult PerformImplicitConversion(Expr *From, QualType ToType, 5524 const StandardConversionSequence& SCS, 5525 AssignmentAction Action, 5526 CheckedConversionKind CCK); 5527 5528 /// the following "Check" methods will return a valid/converted QualType 5529 /// or a null QualType (indicating an error diagnostic was issued). 5530 5531 /// type checking binary operators (subroutines of CreateBuiltinBinOp). 5532 QualType InvalidOperands(SourceLocation l, ExprResult &lex, ExprResult &rex); 5533 QualType CheckPointerToMemberOperands( // C++ 5.5 5534 ExprResult &lex, ExprResult &rex, ExprValueKind &VK, 5535 SourceLocation OpLoc, bool isIndirect); 5536 QualType CheckMultiplyDivideOperands( // C99 6.5.5 5537 ExprResult &lex, ExprResult &rex, SourceLocation OpLoc, bool isCompAssign, 5538 bool isDivide); 5539 QualType CheckRemainderOperands( // C99 6.5.5 5540 ExprResult &lex, ExprResult &rex, SourceLocation OpLoc, bool isCompAssign = false); 5541 QualType CheckAdditionOperands( // C99 6.5.6 5542 ExprResult &lex, ExprResult &rex, SourceLocation OpLoc, QualType* CompLHSTy = 0); 5543 QualType CheckSubtractionOperands( // C99 6.5.6 5544 ExprResult &lex, ExprResult &rex, SourceLocation OpLoc, QualType* CompLHSTy = 0); 5545 QualType CheckShiftOperands( // C99 6.5.7 5546 ExprResult &lex, ExprResult &rex, SourceLocation OpLoc, unsigned Opc, 5547 bool isCompAssign = false); 5548 QualType CheckCompareOperands( // C99 6.5.8/9 5549 ExprResult &lex, ExprResult &rex, SourceLocation OpLoc, unsigned Opc, 5550 bool isRelational); 5551 QualType CheckBitwiseOperands( // C99 6.5.[10...12] 5552 ExprResult &lex, ExprResult &rex, SourceLocation OpLoc, bool isCompAssign = false); 5553 QualType CheckLogicalOperands( // C99 6.5.[13,14] 5554 ExprResult &lex, ExprResult &rex, SourceLocation OpLoc, unsigned Opc); 5555 // CheckAssignmentOperands is used for both simple and compound assignment. 5556 // For simple assignment, pass both expressions and a null converted type. 5557 // For compound assignment, pass both expressions and the converted type. 5558 QualType CheckAssignmentOperands( // C99 6.5.16.[1,2] 5559 Expr *lex, ExprResult &rex, SourceLocation OpLoc, QualType convertedType); 5560 5561 void ConvertPropertyForLValue(ExprResult &LHS, ExprResult &RHS, QualType& LHSTy); 5562 ExprResult ConvertPropertyForRValue(Expr *E); 5563 5564 QualType CheckConditionalOperands( // C99 6.5.15 5565 ExprResult &cond, ExprResult &lhs, ExprResult &rhs, 5566 ExprValueKind &VK, ExprObjectKind &OK, SourceLocation questionLoc); 5567 QualType CXXCheckConditionalOperands( // C++ 5.16 5568 ExprResult &cond, ExprResult &lhs, ExprResult &rhs, 5569 ExprValueKind &VK, ExprObjectKind &OK, SourceLocation questionLoc); 5570 QualType FindCompositePointerType(SourceLocation Loc, Expr *&E1, Expr *&E2, 5571 bool *NonStandardCompositeType = 0); 5572 QualType FindCompositePointerType(SourceLocation Loc, ExprResult &E1, ExprResult &E2, 5573 bool *NonStandardCompositeType = 0) { 5574 Expr *E1Tmp = E1.take(), *E2Tmp = E2.take(); 5575 QualType Composite = FindCompositePointerType(Loc, E1Tmp, E2Tmp, NonStandardCompositeType); 5576 E1 = Owned(E1Tmp); 5577 E2 = Owned(E2Tmp); 5578 return Composite; 5579 } 5580 5581 QualType FindCompositeObjCPointerType(ExprResult &LHS, ExprResult &RHS, 5582 SourceLocation questionLoc); 5583 5584 bool DiagnoseConditionalForNull(Expr *LHS, Expr *RHS, 5585 SourceLocation QuestionLoc); 5586 5587 /// type checking for vector binary operators. 5588 QualType CheckVectorOperands(ExprResult &lex, ExprResult &rex, 5589 SourceLocation Loc, bool isCompAssign); 5590 QualType CheckVectorCompareOperands(ExprResult &lex, ExprResult &rx, 5591 SourceLocation l, bool isRel); 5592 5593 /// type checking declaration initializers (C99 6.7.8) 5594 bool CheckInitList(const InitializedEntity &Entity, 5595 InitListExpr *&InitList, QualType &DeclType); 5596 bool CheckForConstantInitializer(Expr *e, QualType t); 5597 5598 // type checking C++ declaration initializers (C++ [dcl.init]). 5599 5600 /// ReferenceCompareResult - Expresses the result of comparing two 5601 /// types (cv1 T1 and cv2 T2) to determine their compatibility for the 5602 /// purposes of initialization by reference (C++ [dcl.init.ref]p4). 5603 enum ReferenceCompareResult { 5604 /// Ref_Incompatible - The two types are incompatible, so direct 5605 /// reference binding is not possible. 5606 Ref_Incompatible = 0, 5607 /// Ref_Related - The two types are reference-related, which means 5608 /// that their unqualified forms (T1 and T2) are either the same 5609 /// or T1 is a base class of T2. 5610 Ref_Related, 5611 /// Ref_Compatible_With_Added_Qualification - The two types are 5612 /// reference-compatible with added qualification, meaning that 5613 /// they are reference-compatible and the qualifiers on T1 (cv1) 5614 /// are greater than the qualifiers on T2 (cv2). 5615 Ref_Compatible_With_Added_Qualification, 5616 /// Ref_Compatible - The two types are reference-compatible and 5617 /// have equivalent qualifiers (cv1 == cv2). 5618 Ref_Compatible 5619 }; 5620 5621 ReferenceCompareResult CompareReferenceRelationship(SourceLocation Loc, 5622 QualType T1, QualType T2, 5623 bool &DerivedToBase, 5624 bool &ObjCConversion, 5625 bool &ObjCLifetimeConversion); 5626 5627 /// CheckCastTypes - Check type constraints for casting between types under 5628 /// C semantics, or forward to CXXCheckCStyleCast in C++. 5629 ExprResult CheckCastTypes(SourceLocation CastStartLoc, SourceRange TyRange, 5630 QualType CastTy, Expr *CastExpr, CastKind &Kind, 5631 ExprValueKind &VK, CXXCastPath &BasePath, 5632 bool FunctionalStyle = false); 5633 5634 ExprResult checkUnknownAnyCast(SourceRange TyRange, QualType castType, 5635 Expr *castExpr, CastKind &castKind, 5636 ExprValueKind &valueKind, CXXCastPath &BasePath); 5637 5638 // CheckVectorCast - check type constraints for vectors. 5639 // Since vectors are an extension, there are no C standard reference for this. 5640 // We allow casting between vectors and integer datatypes of the same size. 5641 // returns true if the cast is invalid 5642 bool CheckVectorCast(SourceRange R, QualType VectorTy, QualType Ty, 5643 CastKind &Kind); 5644 5645 // CheckExtVectorCast - check type constraints for extended vectors. 5646 // Since vectors are an extension, there are no C standard reference for this. 5647 // We allow casting between vectors and integer datatypes of the same size, 5648 // or vectors and the element type of that vector. 5649 // returns the cast expr 5650 ExprResult CheckExtVectorCast(SourceRange R, QualType VectorTy, Expr *CastExpr, 5651 CastKind &Kind); 5652 5653 /// CXXCheckCStyleCast - Check constraints of a C-style or function-style 5654 /// cast under C++ semantics. 5655 ExprResult CXXCheckCStyleCast(SourceRange R, QualType CastTy, ExprValueKind &VK, 5656 Expr *CastExpr, CastKind &Kind, 5657 CXXCastPath &BasePath, bool FunctionalStyle); 5658 5659 /// \brief Checks for valid expressions which can be cast to an ObjC 5660 /// pointer without needing a bridge cast. 5661 bool ValidObjCARCNoBridgeCastExpr(Expr *&Exp, QualType castType); 5662 5663 /// \brief Checks for invalid conversions and casts between 5664 /// retainable pointers and other pointer kinds. 5665 void CheckObjCARCConversion(SourceRange castRange, QualType castType, 5666 Expr *&op, CheckedConversionKind CCK); 5667 5668 bool CheckObjCARCUnavailableWeakConversion(QualType castType, 5669 QualType ExprType); 5670 5671 /// checkRetainCycles - Check whether an Objective-C message send 5672 /// might create an obvious retain cycle. 5673 void checkRetainCycles(ObjCMessageExpr *msg); 5674 void checkRetainCycles(Expr *receiver, Expr *argument); 5675 5676 /// checkUnsafeAssigns - Check whether +1 expr is being assigned 5677 /// to weak/__unsafe_unretained type. 5678 bool checkUnsafeAssigns(SourceLocation Loc, QualType LHS, Expr *RHS); 5679 5680 /// checkUnsafeExprAssigns - Check whether +1 expr is being assigned 5681 /// to weak/__unsafe_unretained expression. 5682 void checkUnsafeExprAssigns(SourceLocation Loc, Expr *LHS, Expr *RHS); 5683 5684 /// CheckMessageArgumentTypes - Check types in an Obj-C message send. 5685 /// \param Method - May be null. 5686 /// \param [out] ReturnType - The return type of the send. 5687 /// \return true iff there were any incompatible types. 5688 bool CheckMessageArgumentTypes(QualType ReceiverType, 5689 Expr **Args, unsigned NumArgs, Selector Sel, 5690 ObjCMethodDecl *Method, bool isClassMessage, 5691 bool isSuperMessage, 5692 SourceLocation lbrac, SourceLocation rbrac, 5693 QualType &ReturnType, ExprValueKind &VK); 5694 5695 /// \brief Determine the result of a message send expression based on 5696 /// the type of the receiver, the method expected to receive the message, 5697 /// and the form of the message send. 5698 QualType getMessageSendResultType(QualType ReceiverType, 5699 ObjCMethodDecl *Method, 5700 bool isClassMessage, bool isSuperMessage); 5701 5702 /// \brief If the given expression involves a message send to a method 5703 /// with a related result type, emit a note describing what happened. 5704 void EmitRelatedResultTypeNote(const Expr *E); 5705 5706 /// CheckBooleanCondition - Diagnose problems involving the use of 5707 /// the given expression as a boolean condition (e.g. in an if 5708 /// statement). Also performs the standard function and array 5709 /// decays, possibly changing the input variable. 5710 /// 5711 /// \param Loc - A location associated with the condition, e.g. the 5712 /// 'if' keyword. 5713 /// \return true iff there were any errors 5714 ExprResult CheckBooleanCondition(Expr *CondExpr, SourceLocation Loc); 5715 5716 ExprResult ActOnBooleanCondition(Scope *S, SourceLocation Loc, 5717 Expr *SubExpr); 5718 5719 /// DiagnoseAssignmentAsCondition - Given that an expression is 5720 /// being used as a boolean condition, warn if it's an assignment. 5721 void DiagnoseAssignmentAsCondition(Expr *E); 5722 5723 /// \brief Redundant parentheses over an equality comparison can indicate 5724 /// that the user intended an assignment used as condition. 5725 void DiagnoseEqualityWithExtraParens(ParenExpr *parenE); 5726 5727 /// CheckCXXBooleanCondition - Returns true if conversion to bool is invalid. 5728 ExprResult CheckCXXBooleanCondition(Expr *CondExpr); 5729 5730 /// ConvertIntegerToTypeWarnOnOverflow - Convert the specified APInt to have 5731 /// the specified width and sign. If an overflow occurs, detect it and emit 5732 /// the specified diagnostic. 5733 void ConvertIntegerToTypeWarnOnOverflow(llvm::APSInt &OldVal, 5734 unsigned NewWidth, bool NewSign, 5735 SourceLocation Loc, unsigned DiagID); 5736 5737 /// Checks that the Objective-C declaration is declared in the global scope. 5738 /// Emits an error and marks the declaration as invalid if it's not declared 5739 /// in the global scope. 5740 bool CheckObjCDeclScope(Decl *D); 5741 5742 /// VerifyIntegerConstantExpression - verifies that an expression is an ICE, 5743 /// and reports the appropriate diagnostics. Returns false on success. 5744 /// Can optionally return the value of the expression. 5745 bool VerifyIntegerConstantExpression(const Expr *E, llvm::APSInt *Result = 0); 5746 5747 /// VerifyBitField - verifies that a bit field expression is an ICE and has 5748 /// the correct width, and that the field type is valid. 5749 /// Returns false on success. 5750 /// Can optionally return whether the bit-field is of width 0 5751 bool VerifyBitField(SourceLocation FieldLoc, IdentifierInfo *FieldName, 5752 QualType FieldTy, const Expr *BitWidth, 5753 bool *ZeroWidth = 0); 5754 5755 /// \name Code completion 5756 //@{ 5757 /// \brief Describes the context in which code completion occurs. 5758 enum ParserCompletionContext { 5759 /// \brief Code completion occurs at top-level or namespace context. 5760 PCC_Namespace, 5761 /// \brief Code completion occurs within a class, struct, or union. 5762 PCC_Class, 5763 /// \brief Code completion occurs within an Objective-C interface, protocol, 5764 /// or category. 5765 PCC_ObjCInterface, 5766 /// \brief Code completion occurs within an Objective-C implementation or 5767 /// category implementation 5768 PCC_ObjCImplementation, 5769 /// \brief Code completion occurs within the list of instance variables 5770 /// in an Objective-C interface, protocol, category, or implementation. 5771 PCC_ObjCInstanceVariableList, 5772 /// \brief Code completion occurs following one or more template 5773 /// headers. 5774 PCC_Template, 5775 /// \brief Code completion occurs following one or more template 5776 /// headers within a class. 5777 PCC_MemberTemplate, 5778 /// \brief Code completion occurs within an expression. 5779 PCC_Expression, 5780 /// \brief Code completion occurs within a statement, which may 5781 /// also be an expression or a declaration. 5782 PCC_Statement, 5783 /// \brief Code completion occurs at the beginning of the 5784 /// initialization statement (or expression) in a for loop. 5785 PCC_ForInit, 5786 /// \brief Code completion occurs within the condition of an if, 5787 /// while, switch, or for statement. 5788 PCC_Condition, 5789 /// \brief Code completion occurs within the body of a function on a 5790 /// recovery path, where we do not have a specific handle on our position 5791 /// in the grammar. 5792 PCC_RecoveryInFunction, 5793 /// \brief Code completion occurs where only a type is permitted. 5794 PCC_Type, 5795 /// \brief Code completion occurs in a parenthesized expression, which 5796 /// might also be a type cast. 5797 PCC_ParenthesizedExpression, 5798 /// \brief Code completion occurs within a sequence of declaration 5799 /// specifiers within a function, method, or block. 5800 PCC_LocalDeclarationSpecifiers 5801 }; 5802 5803 void CodeCompleteOrdinaryName(Scope *S, 5804 ParserCompletionContext CompletionContext); 5805 void CodeCompleteDeclSpec(Scope *S, DeclSpec &DS, 5806 bool AllowNonIdentifiers, 5807 bool AllowNestedNameSpecifiers); 5808 5809 struct CodeCompleteExpressionData; 5810 void CodeCompleteExpression(Scope *S, 5811 const CodeCompleteExpressionData &Data); 5812 void CodeCompleteMemberReferenceExpr(Scope *S, Expr *Base, 5813 SourceLocation OpLoc, 5814 bool IsArrow); 5815 void CodeCompletePostfixExpression(Scope *S, ExprResult LHS); 5816 void CodeCompleteTag(Scope *S, unsigned TagSpec); 5817 void CodeCompleteTypeQualifiers(DeclSpec &DS); 5818 void CodeCompleteCase(Scope *S); 5819 void CodeCompleteCall(Scope *S, Expr *Fn, Expr **Args, unsigned NumArgs); 5820 void CodeCompleteInitializer(Scope *S, Decl *D); 5821 void CodeCompleteReturn(Scope *S); 5822 void CodeCompleteAssignmentRHS(Scope *S, Expr *LHS); 5823 5824 void CodeCompleteQualifiedId(Scope *S, CXXScopeSpec &SS, 5825 bool EnteringContext); 5826 void CodeCompleteUsing(Scope *S); 5827 void CodeCompleteUsingDirective(Scope *S); 5828 void CodeCompleteNamespaceDecl(Scope *S); 5829 void CodeCompleteNamespaceAliasDecl(Scope *S); 5830 void CodeCompleteOperatorName(Scope *S); 5831 void CodeCompleteConstructorInitializer(Decl *Constructor, 5832 CXXCtorInitializer** Initializers, 5833 unsigned NumInitializers); 5834 5835 void CodeCompleteObjCAtDirective(Scope *S, Decl *ObjCImpDecl, 5836 bool InInterface); 5837 void CodeCompleteObjCAtVisibility(Scope *S); 5838 void CodeCompleteObjCAtStatement(Scope *S); 5839 void CodeCompleteObjCAtExpression(Scope *S); 5840 void CodeCompleteObjCPropertyFlags(Scope *S, ObjCDeclSpec &ODS); 5841 void CodeCompleteObjCPropertyGetter(Scope *S, Decl *ClassDecl); 5842 void CodeCompleteObjCPropertySetter(Scope *S, Decl *ClassDecl); 5843 void CodeCompleteObjCPassingType(Scope *S, ObjCDeclSpec &DS, 5844 bool IsParameter); 5845 void CodeCompleteObjCMessageReceiver(Scope *S); 5846 void CodeCompleteObjCSuperMessage(Scope *S, SourceLocation SuperLoc, 5847 IdentifierInfo **SelIdents, 5848 unsigned NumSelIdents, 5849 bool AtArgumentExpression); 5850 void CodeCompleteObjCClassMessage(Scope *S, ParsedType Receiver, 5851 IdentifierInfo **SelIdents, 5852 unsigned NumSelIdents, 5853 bool AtArgumentExpression, 5854 bool IsSuper = false); 5855 void CodeCompleteObjCInstanceMessage(Scope *S, ExprTy *Receiver, 5856 IdentifierInfo **SelIdents, 5857 unsigned NumSelIdents, 5858 bool AtArgumentExpression, 5859 ObjCInterfaceDecl *Super = 0); 5860 void CodeCompleteObjCForCollection(Scope *S, 5861 DeclGroupPtrTy IterationVar); 5862 void CodeCompleteObjCSelector(Scope *S, 5863 IdentifierInfo **SelIdents, 5864 unsigned NumSelIdents); 5865 void CodeCompleteObjCProtocolReferences(IdentifierLocPair *Protocols, 5866 unsigned NumProtocols); 5867 void CodeCompleteObjCProtocolDecl(Scope *S); 5868 void CodeCompleteObjCInterfaceDecl(Scope *S); 5869 void CodeCompleteObjCSuperclass(Scope *S, 5870 IdentifierInfo *ClassName, 5871 SourceLocation ClassNameLoc); 5872 void CodeCompleteObjCImplementationDecl(Scope *S); 5873 void CodeCompleteObjCInterfaceCategory(Scope *S, 5874 IdentifierInfo *ClassName, 5875 SourceLocation ClassNameLoc); 5876 void CodeCompleteObjCImplementationCategory(Scope *S, 5877 IdentifierInfo *ClassName, 5878 SourceLocation ClassNameLoc); 5879 void CodeCompleteObjCPropertyDefinition(Scope *S, Decl *ObjCImpDecl); 5880 void CodeCompleteObjCPropertySynthesizeIvar(Scope *S, 5881 IdentifierInfo *PropertyName, 5882 Decl *ObjCImpDecl); 5883 void CodeCompleteObjCMethodDecl(Scope *S, 5884 bool IsInstanceMethod, 5885 ParsedType ReturnType, 5886 Decl *IDecl); 5887 void CodeCompleteObjCMethodDeclSelector(Scope *S, 5888 bool IsInstanceMethod, 5889 bool AtParameterName, 5890 ParsedType ReturnType, 5891 IdentifierInfo **SelIdents, 5892 unsigned NumSelIdents); 5893 void CodeCompletePreprocessorDirective(bool InConditional); 5894 void CodeCompleteInPreprocessorConditionalExclusion(Scope *S); 5895 void CodeCompletePreprocessorMacroName(bool IsDefinition); 5896 void CodeCompletePreprocessorExpression(); 5897 void CodeCompletePreprocessorMacroArgument(Scope *S, 5898 IdentifierInfo *Macro, 5899 MacroInfo *MacroInfo, 5900 unsigned Argument); 5901 void CodeCompleteNaturalLanguage(); 5902 void GatherGlobalCodeCompletions(CodeCompletionAllocator &Allocator, 5903 SmallVectorImpl<CodeCompletionResult> &Results); 5904 //@} 5905 5906 //===--------------------------------------------------------------------===// 5907 // Extra semantic analysis beyond the C type system 5908 5909public: 5910 SourceLocation getLocationOfStringLiteralByte(const StringLiteral *SL, 5911 unsigned ByteNo) const; 5912 5913private: 5914 void CheckArrayAccess(const Expr *E); 5915 bool CheckFunctionCall(FunctionDecl *FDecl, CallExpr *TheCall); 5916 bool CheckBlockCall(NamedDecl *NDecl, CallExpr *TheCall); 5917 5918 bool CheckablePrintfAttr(const FormatAttr *Format, CallExpr *TheCall); 5919 bool CheckObjCString(Expr *Arg); 5920 5921 ExprResult CheckBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); 5922 bool CheckARMBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall); 5923 5924 bool SemaBuiltinVAStart(CallExpr *TheCall); 5925 bool SemaBuiltinUnorderedCompare(CallExpr *TheCall); 5926 bool SemaBuiltinFPClassification(CallExpr *TheCall, unsigned NumArgs); 5927 5928public: 5929 // Used by C++ template instantiation. 5930 ExprResult SemaBuiltinShuffleVector(CallExpr *TheCall); 5931 5932private: 5933 bool SemaBuiltinPrefetch(CallExpr *TheCall); 5934 bool SemaBuiltinObjectSize(CallExpr *TheCall); 5935 bool SemaBuiltinLongjmp(CallExpr *TheCall); 5936 ExprResult SemaBuiltinAtomicOverloaded(ExprResult TheCallResult); 5937 bool SemaBuiltinConstantArg(CallExpr *TheCall, int ArgNum, 5938 llvm::APSInt &Result); 5939 5940 bool SemaCheckStringLiteral(const Expr *E, const CallExpr *TheCall, 5941 bool HasVAListArg, unsigned format_idx, 5942 unsigned firstDataArg, bool isPrintf); 5943 5944 void CheckFormatString(const StringLiteral *FExpr, const Expr *OrigFormatExpr, 5945 const CallExpr *TheCall, bool HasVAListArg, 5946 unsigned format_idx, unsigned firstDataArg, 5947 bool isPrintf); 5948 5949 void CheckNonNullArguments(const NonNullAttr *NonNull, 5950 const Expr * const *ExprArgs, 5951 SourceLocation CallSiteLoc); 5952 5953 void CheckPrintfScanfArguments(const CallExpr *TheCall, bool HasVAListArg, 5954 unsigned format_idx, unsigned firstDataArg, 5955 bool isPrintf); 5956 5957 /// \brief Enumeration used to describe which of the memory setting or copying 5958 /// functions is being checked by \c CheckMemsetcpymoveArguments(). 5959 enum CheckedMemoryFunction { 5960 CMF_Memset, 5961 CMF_Memcpy, 5962 CMF_Memmove 5963 }; 5964 5965 void CheckMemsetcpymoveArguments(const CallExpr *Call, 5966 CheckedMemoryFunction CMF, 5967 IdentifierInfo *FnName); 5968 5969 void CheckReturnStackAddr(Expr *RetValExp, QualType lhsType, 5970 SourceLocation ReturnLoc); 5971 void CheckFloatComparison(SourceLocation loc, Expr* lex, Expr* rex); 5972 void CheckImplicitConversions(Expr *E, SourceLocation CC = SourceLocation()); 5973 5974 void CheckBitFieldInitialization(SourceLocation InitLoc, FieldDecl *Field, 5975 Expr *Init); 5976 5977 /// \brief The parser's current scope. 5978 /// 5979 /// The parser maintains this state here. 5980 Scope *CurScope; 5981 5982protected: 5983 friend class Parser; 5984 friend class InitializationSequence; 5985 friend class ASTReader; 5986 friend class ASTWriter; 5987 5988public: 5989 /// \brief Retrieve the parser's current scope. 5990 /// 5991 /// This routine must only be used when it is certain that semantic analysis 5992 /// and the parser are in precisely the same context, which is not the case 5993 /// when, e.g., we are performing any kind of template instantiation. 5994 /// Therefore, the only safe places to use this scope are in the parser 5995 /// itself and in routines directly invoked from the parser and *never* from 5996 /// template substitution or instantiation. 5997 Scope *getCurScope() const { return CurScope; } 5998}; 5999 6000/// \brief RAII object that enters a new expression evaluation context. 6001class EnterExpressionEvaluationContext { 6002 Sema &Actions; 6003 6004public: 6005 EnterExpressionEvaluationContext(Sema &Actions, 6006 Sema::ExpressionEvaluationContext NewContext) 6007 : Actions(Actions) { 6008 Actions.PushExpressionEvaluationContext(NewContext); 6009 } 6010 6011 ~EnterExpressionEvaluationContext() { 6012 Actions.PopExpressionEvaluationContext(); 6013 } 6014}; 6015 6016} // end namespace clang 6017 6018#endif 6019