ASTContext.h revision 400f5125e2432d648f2c8a31b36a7f318a880c47
1c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)//===--- ASTContext.h - Context to hold long-lived AST nodes ----*- C++ -*-===// 2c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// 3c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// The LLVM Compiler Infrastructure 4c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// 5c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// This file is distributed under the University of Illinois Open Source 6c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// License. See LICENSE.TXT for details. 7c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// 87dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch//===----------------------------------------------------------------------===// 9c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// 10c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)// This file defines the ASTContext interface. 110529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch// 127dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch//===----------------------------------------------------------------------===// 137dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 147dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#ifndef LLVM_CLANG_AST_ASTCONTEXT_H 15effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch#define LLVM_CLANG_AST_ASTCONTEXT_H 167dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 17c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "clang/Basic/IdentifierTable.h" 18c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "clang/Basic/LangOptions.h" 19c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "clang/Basic/OperatorKinds.h" 20c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "clang/Basic/PartialDiagnostic.h" 21c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "clang/AST/Attr.h" 22c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "clang/AST/Decl.h" 23c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "clang/AST/NestedNameSpecifier.h" 24c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "clang/AST/PrettyPrinter.h" 2546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include "clang/AST/TemplateName.h" 26c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "clang/AST/Type.h" 27c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "clang/AST/CanonicalType.h" 287dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#include "clang/AST/UsuallyTinyPtrVector.h" 297dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#include "llvm/ADT/DenseMap.h" 307dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#include "llvm/ADT/FoldingSet.h" 317dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#include "llvm/ADT/OwningPtr.h" 324e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "llvm/ADT/SmallPtrSet.h" 334e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "llvm/Support/Allocator.h" 344e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include <vector> 354e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 364e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)namespace llvm { 374e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) struct fltSemantics; 384e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) class raw_ostream; 39f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)} 40f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) 41f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles)namespace clang { 42f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) class FileManager; 43f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) class ASTRecordLayout; 44f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) class BlockExpr; 45f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) class CharUnits; 46f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) class Diagnostic; 47f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) class Expr; 484e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) class ExternalASTSource; 49a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) class IdentifierTable; 501320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci class SelectorTable; 511320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci class SourceManager; 521320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci class TargetInfo; 5368043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // Decls 5468043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) class DeclContext; 555c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu class CXXMethodDecl; 565c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu class CXXRecordDecl; 575c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu class Decl; 584e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) class FieldDecl; 594e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) class ObjCIvarDecl; 60f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) class ObjCIvarRefExpr; 61f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) class ObjCPropertyDecl; 624e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) class RecordDecl; 63a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) class StoredDeclsMap; 64f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) class TagDecl; 65f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) class TemplateTemplateParmDecl; 66f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) class TemplateTypeParmDecl; 67f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) class TranslationUnitDecl; 68f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) class TypeDecl; 695c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu class TypedefDecl; 704e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) class UsingDecl; 714e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) class UsingShadowDecl; 724e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) class UnresolvedSetIterator; 734e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 744e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) namespace Builtin { class Context; } 754e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 764e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)/// ASTContext - This class holds long-lived AST nodes (such as types and 774e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)/// decls) that can be referred to throughout the semantic analysis of a file. 784e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)class ASTContext { 794e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) ASTContext &this_() { return *this; } 804e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 814e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) std::vector<Type*> Types; 824e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) llvm::FoldingSet<ExtQuals> ExtQualNodes; 834e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) llvm::FoldingSet<ComplexType> ComplexTypes; 844e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) llvm::FoldingSet<PointerType> PointerTypes; 855c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu llvm::FoldingSet<BlockPointerType> BlockPointerTypes; 865c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu llvm::FoldingSet<LValueReferenceType> LValueReferenceTypes; 875c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu llvm::FoldingSet<RValueReferenceType> RValueReferenceTypes; 885c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu llvm::FoldingSet<MemberPointerType> MemberPointerTypes; 89c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) llvm::FoldingSet<ConstantArrayType> ConstantArrayTypes; 90effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch llvm::FoldingSet<IncompleteArrayType> IncompleteArrayTypes; 91ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch std::vector<VariableArrayType*> VariableArrayTypes; 92c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) llvm::FoldingSet<DependentSizedArrayType> DependentSizedArrayTypes; 93c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) llvm::FoldingSet<DependentSizedExtVectorType> DependentSizedExtVectorTypes; 94a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) llvm::FoldingSet<VectorType> VectorTypes; 95a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) llvm::FoldingSet<FunctionNoProtoType> FunctionNoProtoTypes; 96a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) llvm::FoldingSet<FunctionProtoType> FunctionProtoTypes; 97a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) llvm::FoldingSet<DependentTypeOfExprType> DependentTypeOfExprTypes; 98a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) llvm::FoldingSet<DependentDecltypeType> DependentDecltypeTypes; 9968043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) llvm::FoldingSet<TemplateTypeParmType> TemplateTypeParmTypes; 10068043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) llvm::FoldingSet<SubstTemplateTypeParmType> SubstTemplateTypeParmTypes; 10168043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) llvm::ContextualFoldingSet<TemplateSpecializationType, ASTContext&> 10268043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) TemplateSpecializationTypes; 10368043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) llvm::FoldingSet<ElaboratedType> ElaboratedTypes; 10468043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) llvm::FoldingSet<DependentNameType> DependentNameTypes; 105c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) llvm::ContextualFoldingSet<DependentTemplateSpecializationType, ASTContext&> 1064e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) DependentTemplateSpecializationTypes; 1074e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) llvm::FoldingSet<ObjCObjectTypeImpl> ObjCObjectTypes; 1084e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) llvm::FoldingSet<ObjCObjectPointerType> ObjCObjectPointerTypes; 1094e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 1104e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) llvm::FoldingSet<QualifiedTemplateName> QualifiedTemplateNames; 1114e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) llvm::FoldingSet<DependentTemplateName> DependentTemplateNames; 1124e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 1134e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) /// \brief The set of nested name specifiers. 114cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) /// 115f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) /// This set is managed by the NestedNameSpecifier class. 116f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) llvm::FoldingSet<NestedNameSpecifier> NestedNameSpecifiers; 117f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) NestedNameSpecifier *GlobalNestedNameSpecifier; 118cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) friend class NestedNameSpecifier; 119cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 120cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) /// ASTRecordLayouts - A cache mapping from RecordDecls to ASTRecordLayouts. 121cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) /// This is lazily created. This is intentionally not serialized. 122f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) llvm::DenseMap<const RecordDecl*, const ASTRecordLayout*> ASTRecordLayouts; 123f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) llvm::DenseMap<const ObjCContainerDecl*, const ASTRecordLayout*> ObjCLayouts; 124cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 125c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) /// KeyFunctions - A cache mapping from CXXRecordDecls to key functions. 1264e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) llvm::DenseMap<const CXXRecordDecl*, const CXXMethodDecl*> KeyFunctions; 1274e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 128f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) /// \brief Mapping from ObjCContainers to their ObjCImplementations. 129f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) llvm::DenseMap<ObjCContainerDecl*, ObjCImplDecl*> ObjCImpls; 130c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 131c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) /// \brief Representation of a "canonical" template template parameter that 132c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) /// is used in canonical template names. 133c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) class CanonicalTemplateTemplateParm : public llvm::FoldingSetNode { 134 TemplateTemplateParmDecl *Parm; 135 136 public: 137 CanonicalTemplateTemplateParm(TemplateTemplateParmDecl *Parm) 138 : Parm(Parm) { } 139 140 TemplateTemplateParmDecl *getParam() const { return Parm; } 141 142 void Profile(llvm::FoldingSetNodeID &ID) { Profile(ID, Parm); } 143 144 static void Profile(llvm::FoldingSetNodeID &ID, 145 TemplateTemplateParmDecl *Parm); 146 }; 147 llvm::FoldingSet<CanonicalTemplateTemplateParm> CanonTemplateTemplateParms; 148 149 TemplateTemplateParmDecl *getCanonicalTemplateTemplateParmDecl( 150 TemplateTemplateParmDecl *TTP); 151 152 /// \brief Whether __[u]int128_t identifier is installed. 153 bool IsInt128Installed; 154 155 /// BuiltinVaListType - built-in va list type. 156 /// This is initially null and set by Sema::LazilyCreateBuiltin when 157 /// a builtin that takes a valist is encountered. 158 QualType BuiltinVaListType; 159 160 /// ObjCIdType - a pseudo built-in typedef type (set by Sema). 161 QualType ObjCIdTypedefType; 162 163 /// ObjCSelType - another pseudo built-in typedef type (set by Sema). 164 QualType ObjCSelTypedefType; 165 166 /// ObjCProtoType - another pseudo built-in typedef type (set by Sema). 167 QualType ObjCProtoType; 168 const RecordType *ProtoStructType; 169 170 /// ObjCClassType - another pseudo built-in typedef type (set by Sema). 171 QualType ObjCClassTypedefType; 172 173 QualType ObjCConstantStringType; 174 RecordDecl *CFConstantStringTypeDecl; 175 176 RecordDecl *NSConstantStringTypeDecl; 177 178 RecordDecl *ObjCFastEnumerationStateTypeDecl; 179 180 /// \brief The type for the C FILE type. 181 TypeDecl *FILEDecl; 182 183 /// \brief The type for the C jmp_buf type. 184 TypeDecl *jmp_bufDecl; 185 186 /// \brief The type for the C sigjmp_buf type. 187 TypeDecl *sigjmp_bufDecl; 188 189 /// \brief Type for the Block descriptor for Blocks CodeGen. 190 RecordDecl *BlockDescriptorType; 191 192 /// \brief Type for the Block descriptor for Blocks CodeGen. 193 RecordDecl *BlockDescriptorExtendedType; 194 195 TypeSourceInfo NullTypeSourceInfo; 196 197 /// \brief Keeps track of all declaration attributes. 198 /// 199 /// Since so few decls have attrs, we keep them in a hash map instead of 200 /// wasting space in the Decl class. 201 llvm::DenseMap<const Decl*, Attr*> DeclAttrs; 202 203 /// \brief Keeps track of the static data member templates from which 204 /// static data members of class template specializations were instantiated. 205 /// 206 /// This data structure stores the mapping from instantiations of static 207 /// data members to the static data member representations within the 208 /// class template from which they were instantiated along with the kind 209 /// of instantiation or specialization (a TemplateSpecializationKind - 1). 210 /// 211 /// Given the following example: 212 /// 213 /// \code 214 /// template<typename T> 215 /// struct X { 216 /// static T value; 217 /// }; 218 /// 219 /// template<typename T> 220 /// T X<T>::value = T(17); 221 /// 222 /// int *x = &X<int>::value; 223 /// \endcode 224 /// 225 /// This mapping will contain an entry that maps from the VarDecl for 226 /// X<int>::value to the corresponding VarDecl for X<T>::value (within the 227 /// class template X) and will be marked TSK_ImplicitInstantiation. 228 llvm::DenseMap<const VarDecl *, MemberSpecializationInfo *> 229 InstantiatedFromStaticDataMember; 230 231 /// \brief Keeps track of the declaration from which a UsingDecl was 232 /// created during instantiation. The source declaration is always 233 /// a UsingDecl, an UnresolvedUsingValueDecl, or an 234 /// UnresolvedUsingTypenameDecl. 235 /// 236 /// For example: 237 /// \code 238 /// template<typename T> 239 /// struct A { 240 /// void f(); 241 /// }; 242 /// 243 /// template<typename T> 244 /// struct B : A<T> { 245 /// using A<T>::f; 246 /// }; 247 /// 248 /// template struct B<int>; 249 /// \endcode 250 /// 251 /// This mapping will contain an entry that maps from the UsingDecl in 252 /// B<int> to the UnresolvedUsingDecl in B<T>. 253 llvm::DenseMap<UsingDecl *, NamedDecl *> InstantiatedFromUsingDecl; 254 255 llvm::DenseMap<UsingShadowDecl*, UsingShadowDecl*> 256 InstantiatedFromUsingShadowDecl; 257 258 llvm::DenseMap<FieldDecl *, FieldDecl *> InstantiatedFromUnnamedFieldDecl; 259 260 /// \brief Mapping that stores the methods overridden by a given C++ 261 /// member function. 262 /// 263 /// Since most C++ member functions aren't virtual and therefore 264 /// don't override anything, we store the overridden functions in 265 /// this map on the side rather than within the CXXMethodDecl structure. 266 typedef UsuallyTinyPtrVector<const CXXMethodDecl> CXXMethodVector; 267 llvm::DenseMap<const CXXMethodDecl *, CXXMethodVector> OverriddenMethods; 268 269 TranslationUnitDecl *TUDecl; 270 271 /// SourceMgr - The associated SourceManager object. 272 SourceManager &SourceMgr; 273 274 /// LangOpts - The language options used to create the AST associated with 275 /// this ASTContext object. 276 LangOptions LangOpts; 277 278 /// MallocAlloc/BumpAlloc - The allocator objects used to create AST objects. 279 bool FreeMemory; 280 llvm::MallocAllocator MallocAlloc; 281 llvm::BumpPtrAllocator BumpAlloc; 282 283 /// \brief Allocator for partial diagnostics. 284 PartialDiagnostic::StorageAllocator DiagAllocator; 285 286public: 287 const TargetInfo &Target; 288 IdentifierTable &Idents; 289 SelectorTable &Selectors; 290 Builtin::Context &BuiltinInfo; 291 DeclarationNameTable DeclarationNames; 292 llvm::OwningPtr<ExternalASTSource> ExternalSource; 293 clang::PrintingPolicy PrintingPolicy; 294 295 // Typedefs which may be provided defining the structure of Objective-C 296 // pseudo-builtins 297 QualType ObjCIdRedefinitionType; 298 QualType ObjCClassRedefinitionType; 299 QualType ObjCSelRedefinitionType; 300 301 SourceManager& getSourceManager() { return SourceMgr; } 302 const SourceManager& getSourceManager() const { return SourceMgr; } 303 void *Allocate(unsigned Size, unsigned Align = 8) { 304 return FreeMemory ? MallocAlloc.Allocate(Size, Align) : 305 BumpAlloc.Allocate(Size, Align); 306 } 307 void Deallocate(void *Ptr) { 308 if (FreeMemory) 309 MallocAlloc.Deallocate(Ptr); 310 } 311 312 PartialDiagnostic::StorageAllocator &getDiagAllocator() { 313 return DiagAllocator; 314 } 315 316 const LangOptions& getLangOptions() const { return LangOpts; } 317 318 FullSourceLoc getFullLoc(SourceLocation Loc) const { 319 return FullSourceLoc(Loc,SourceMgr); 320 } 321 322 /// \brief Retrieve the attributes for the given declaration. 323 Attr*& getDeclAttrs(const Decl *D) { return DeclAttrs[D]; } 324 325 /// \brief Erase the attributes corresponding to the given declaration. 326 void eraseDeclAttrs(const Decl *D) { DeclAttrs.erase(D); } 327 328 /// \brief If this variable is an instantiated static data member of a 329 /// class template specialization, returns the templated static data member 330 /// from which it was instantiated. 331 MemberSpecializationInfo *getInstantiatedFromStaticDataMember( 332 const VarDecl *Var); 333 334 /// \brief Note that the static data member \p Inst is an instantiation of 335 /// the static data member template \p Tmpl of a class template. 336 void setInstantiatedFromStaticDataMember(VarDecl *Inst, VarDecl *Tmpl, 337 TemplateSpecializationKind TSK, 338 SourceLocation PointOfInstantiation = SourceLocation()); 339 340 /// \brief If the given using decl is an instantiation of a 341 /// (possibly unresolved) using decl from a template instantiation, 342 /// return it. 343 NamedDecl *getInstantiatedFromUsingDecl(UsingDecl *Inst); 344 345 /// \brief Remember that the using decl \p Inst is an instantiation 346 /// of the using decl \p Pattern of a class template. 347 void setInstantiatedFromUsingDecl(UsingDecl *Inst, NamedDecl *Pattern); 348 349 void setInstantiatedFromUsingShadowDecl(UsingShadowDecl *Inst, 350 UsingShadowDecl *Pattern); 351 UsingShadowDecl *getInstantiatedFromUsingShadowDecl(UsingShadowDecl *Inst); 352 353 FieldDecl *getInstantiatedFromUnnamedFieldDecl(FieldDecl *Field); 354 355 void setInstantiatedFromUnnamedFieldDecl(FieldDecl *Inst, FieldDecl *Tmpl); 356 357 // Access to the set of methods overridden by the given C++ method. 358 typedef CXXMethodVector::iterator overridden_cxx_method_iterator; 359 overridden_cxx_method_iterator 360 overridden_methods_begin(const CXXMethodDecl *Method) const; 361 362 overridden_cxx_method_iterator 363 overridden_methods_end(const CXXMethodDecl *Method) const; 364 365 unsigned overridden_methods_size(const CXXMethodDecl *Method) const; 366 367 /// \brief Note that the given C++ \p Method overrides the given \p 368 /// Overridden method. 369 void addOverriddenMethod(const CXXMethodDecl *Method, 370 const CXXMethodDecl *Overridden); 371 372 TranslationUnitDecl *getTranslationUnitDecl() const { return TUDecl; } 373 374 375 // Builtin Types. 376 CanQualType VoidTy; 377 CanQualType BoolTy; 378 CanQualType CharTy; 379 CanQualType WCharTy; // [C++ 3.9.1p5], integer type in C99. 380 CanQualType Char16Ty; // [C++0x 3.9.1p5], integer type in C99. 381 CanQualType Char32Ty; // [C++0x 3.9.1p5], integer type in C99. 382 CanQualType SignedCharTy, ShortTy, IntTy, LongTy, LongLongTy, Int128Ty; 383 CanQualType UnsignedCharTy, UnsignedShortTy, UnsignedIntTy, UnsignedLongTy; 384 CanQualType UnsignedLongLongTy, UnsignedInt128Ty; 385 CanQualType FloatTy, DoubleTy, LongDoubleTy; 386 CanQualType FloatComplexTy, DoubleComplexTy, LongDoubleComplexTy; 387 CanQualType VoidPtrTy, NullPtrTy; 388 CanQualType OverloadTy; 389 CanQualType DependentTy; 390 CanQualType UndeducedAutoTy; 391 CanQualType ObjCBuiltinIdTy, ObjCBuiltinClassTy, ObjCBuiltinSelTy; 392 393 ASTContext(const LangOptions& LOpts, SourceManager &SM, const TargetInfo &t, 394 IdentifierTable &idents, SelectorTable &sels, 395 Builtin::Context &builtins, 396 bool FreeMemory = true, unsigned size_reserve=0); 397 398 ~ASTContext(); 399 400 /// \brief Attach an external AST source to the AST context. 401 /// 402 /// The external AST source provides the ability to load parts of 403 /// the abstract syntax tree as needed from some external storage, 404 /// e.g., a precompiled header. 405 void setExternalSource(llvm::OwningPtr<ExternalASTSource> &Source); 406 407 /// \brief Retrieve a pointer to the external AST source associated 408 /// with this AST context, if any. 409 ExternalASTSource *getExternalSource() const { return ExternalSource.get(); } 410 411 void PrintStats() const; 412 const std::vector<Type*>& getTypes() const { return Types; } 413 414 //===--------------------------------------------------------------------===// 415 // Type Constructors 416 //===--------------------------------------------------------------------===// 417 418private: 419 /// getExtQualType - Return a type with extended qualifiers. 420 QualType getExtQualType(const Type *Base, Qualifiers Quals); 421 422 QualType getTypeDeclTypeSlow(const TypeDecl *Decl); 423 424public: 425 /// getAddSpaceQualType - Return the uniqued reference to the type for an 426 /// address space qualified type with the specified type and address space. 427 /// The resulting type has a union of the qualifiers from T and the address 428 /// space. If T already has an address space specifier, it is silently 429 /// replaced. 430 QualType getAddrSpaceQualType(QualType T, unsigned AddressSpace); 431 432 /// getObjCGCQualType - Returns the uniqued reference to the type for an 433 /// objc gc qualified type. The retulting type has a union of the qualifiers 434 /// from T and the gc attribute. 435 QualType getObjCGCQualType(QualType T, Qualifiers::GC gcAttr); 436 437 /// getRestrictType - Returns the uniqued reference to the type for a 438 /// 'restrict' qualified type. The resulting type has a union of the 439 /// qualifiers from T and 'restrict'. 440 QualType getRestrictType(QualType T) { 441 return T.withFastQualifiers(Qualifiers::Restrict); 442 } 443 444 /// getVolatileType - Returns the uniqued reference to the type for a 445 /// 'volatile' qualified type. The resulting type has a union of the 446 /// qualifiers from T and 'volatile'. 447 QualType getVolatileType(QualType T); 448 449 /// getConstType - Returns the uniqued reference to the type for a 450 /// 'const' qualified type. The resulting type has a union of the 451 /// qualifiers from T and 'const'. 452 /// 453 /// It can be reasonably expected that this will always be 454 /// equivalent to calling T.withConst(). 455 QualType getConstType(QualType T) { return T.withConst(); } 456 457 /// getNoReturnType - Add or remove the noreturn attribute to the given type 458 /// which must be a FunctionType or a pointer to an allowable type or a 459 /// BlockPointer. 460 QualType getNoReturnType(QualType T, bool AddNoReturn = true); 461 462 /// getCallConvType - Adds the specified calling convention attribute to 463 /// the given type, which must be a FunctionType or a pointer to an 464 /// allowable type. 465 QualType getCallConvType(QualType T, CallingConv CallConv); 466 467 /// getRegParmType - Sets the specified regparm attribute to 468 /// the given type, which must be a FunctionType or a pointer to an 469 /// allowable type. 470 QualType getRegParmType(QualType T, unsigned RegParm); 471 472 /// getComplexType - Return the uniqued reference to the type for a complex 473 /// number with the specified element type. 474 QualType getComplexType(QualType T); 475 CanQualType getComplexType(CanQualType T) { 476 return CanQualType::CreateUnsafe(getComplexType((QualType) T)); 477 } 478 479 /// getPointerType - Return the uniqued reference to the type for a pointer to 480 /// the specified type. 481 QualType getPointerType(QualType T); 482 CanQualType getPointerType(CanQualType T) { 483 return CanQualType::CreateUnsafe(getPointerType((QualType) T)); 484 } 485 486 /// getBlockPointerType - Return the uniqued reference to the type for a block 487 /// of the specified type. 488 QualType getBlockPointerType(QualType T); 489 490 /// This gets the struct used to keep track of the descriptor for pointer to 491 /// blocks. 492 QualType getBlockDescriptorType(); 493 494 // Set the type for a Block descriptor type. 495 void setBlockDescriptorType(QualType T); 496 /// Get the BlockDescriptorType type, or NULL if it hasn't yet been built. 497 QualType getRawBlockdescriptorType() { 498 if (BlockDescriptorType) 499 return getTagDeclType(BlockDescriptorType); 500 return QualType(); 501 } 502 503 /// This gets the struct used to keep track of the extended descriptor for 504 /// pointer to blocks. 505 QualType getBlockDescriptorExtendedType(); 506 507 // Set the type for a Block descriptor extended type. 508 void setBlockDescriptorExtendedType(QualType T); 509 /// Get the BlockDescriptorExtendedType type, or NULL if it hasn't yet been 510 /// built. 511 QualType getRawBlockdescriptorExtendedType() { 512 if (BlockDescriptorExtendedType) 513 return getTagDeclType(BlockDescriptorExtendedType); 514 return QualType(); 515 } 516 517 /// This gets the struct used to keep track of pointer to blocks, complete 518 /// with captured variables. 519 QualType getBlockParmType(bool BlockHasCopyDispose, 520 llvm::SmallVectorImpl<const Expr *> &Layout); 521 522 /// This builds the struct used for __block variables. 523 QualType BuildByRefType(const char *DeclName, QualType Ty); 524 525 /// Returns true iff we need copy/dispose helpers for the given type. 526 bool BlockRequiresCopying(QualType Ty); 527 528 /// getLValueReferenceType - Return the uniqued reference to the type for an 529 /// lvalue reference to the specified type. 530 QualType getLValueReferenceType(QualType T, bool SpelledAsLValue = true); 531 532 /// getRValueReferenceType - Return the uniqued reference to the type for an 533 /// rvalue reference to the specified type. 534 QualType getRValueReferenceType(QualType T); 535 536 /// getMemberPointerType - Return the uniqued reference to the type for a 537 /// member pointer to the specified type in the specified class. The class 538 /// is a Type because it could be a dependent name. 539 QualType getMemberPointerType(QualType T, const Type *Cls); 540 541 /// getVariableArrayType - Returns a non-unique reference to the type for a 542 /// variable array of the specified element type. 543 QualType getVariableArrayType(QualType EltTy, Expr *NumElts, 544 ArrayType::ArraySizeModifier ASM, 545 unsigned EltTypeQuals, 546 SourceRange Brackets); 547 548 /// getDependentSizedArrayType - Returns a non-unique reference to 549 /// the type for a dependently-sized array of the specified element 550 /// type. FIXME: We will need these to be uniqued, or at least 551 /// comparable, at some point. 552 QualType getDependentSizedArrayType(QualType EltTy, Expr *NumElts, 553 ArrayType::ArraySizeModifier ASM, 554 unsigned EltTypeQuals, 555 SourceRange Brackets); 556 557 /// getIncompleteArrayType - Returns a unique reference to the type for a 558 /// incomplete array of the specified element type. 559 QualType getIncompleteArrayType(QualType EltTy, 560 ArrayType::ArraySizeModifier ASM, 561 unsigned EltTypeQuals); 562 563 /// getConstantArrayType - Return the unique reference to the type for a 564 /// constant array of the specified element type. 565 QualType getConstantArrayType(QualType EltTy, const llvm::APInt &ArySize, 566 ArrayType::ArraySizeModifier ASM, 567 unsigned EltTypeQuals); 568 569 /// getVectorType - Return the unique reference to a vector type of 570 /// the specified element type and size. VectorType must be a built-in type. 571 QualType getVectorType(QualType VectorType, unsigned NumElts, 572 VectorType::AltiVecSpecific AltiVecSpec); 573 574 /// getExtVectorType - Return the unique reference to an extended vector type 575 /// of the specified element type and size. VectorType must be a built-in 576 /// type. 577 QualType getExtVectorType(QualType VectorType, unsigned NumElts); 578 579 /// getDependentSizedExtVectorType - Returns a non-unique reference to 580 /// the type for a dependently-sized vector of the specified element 581 /// type. FIXME: We will need these to be uniqued, or at least 582 /// comparable, at some point. 583 QualType getDependentSizedExtVectorType(QualType VectorType, 584 Expr *SizeExpr, 585 SourceLocation AttrLoc); 586 587 /// getFunctionNoProtoType - Return a K&R style C function type like 'int()'. 588 /// 589 QualType getFunctionNoProtoType(QualType ResultTy, 590 const FunctionType::ExtInfo &Info); 591 592 QualType getFunctionNoProtoType(QualType ResultTy) { 593 return getFunctionNoProtoType(ResultTy, FunctionType::ExtInfo()); 594 } 595 596 /// getFunctionType - Return a normal function type with a typed argument 597 /// list. isVariadic indicates whether the argument list includes '...'. 598 QualType getFunctionType(QualType ResultTy, const QualType *ArgArray, 599 unsigned NumArgs, bool isVariadic, 600 unsigned TypeQuals, bool hasExceptionSpec, 601 bool hasAnyExceptionSpec, 602 unsigned NumExs, const QualType *ExArray, 603 const FunctionType::ExtInfo &Info); 604 605 /// getTypeDeclType - Return the unique reference to the type for 606 /// the specified type declaration. 607 QualType getTypeDeclType(const TypeDecl *Decl, 608 const TypeDecl *PrevDecl = 0) { 609 assert(Decl && "Passed null for Decl param"); 610 if (Decl->TypeForDecl) return QualType(Decl->TypeForDecl, 0); 611 612 if (PrevDecl) { 613 assert(PrevDecl->TypeForDecl && "previous decl has no TypeForDecl"); 614 Decl->TypeForDecl = PrevDecl->TypeForDecl; 615 return QualType(PrevDecl->TypeForDecl, 0); 616 } 617 618 return getTypeDeclTypeSlow(Decl); 619 } 620 621 /// getTypedefType - Return the unique reference to the type for the 622 /// specified typename decl. 623 QualType getTypedefType(const TypedefDecl *Decl, QualType Canon = QualType()); 624 625 QualType getRecordType(const RecordDecl *Decl); 626 627 QualType getEnumType(const EnumDecl *Decl); 628 629 QualType getInjectedClassNameType(CXXRecordDecl *Decl, QualType TST); 630 631 QualType getSubstTemplateTypeParmType(const TemplateTypeParmType *Replaced, 632 QualType Replacement); 633 634 QualType getTemplateTypeParmType(unsigned Depth, unsigned Index, 635 bool ParameterPack, 636 IdentifierInfo *Name = 0); 637 638 QualType getTemplateSpecializationType(TemplateName T, 639 const TemplateArgument *Args, 640 unsigned NumArgs, 641 QualType Canon = QualType()); 642 643 QualType getCanonicalTemplateSpecializationType(TemplateName T, 644 const TemplateArgument *Args, 645 unsigned NumArgs); 646 647 QualType getTemplateSpecializationType(TemplateName T, 648 const TemplateArgumentListInfo &Args, 649 QualType Canon = QualType()); 650 651 TypeSourceInfo * 652 getTemplateSpecializationTypeInfo(TemplateName T, SourceLocation TLoc, 653 const TemplateArgumentListInfo &Args, 654 QualType Canon = QualType()); 655 656 QualType getElaboratedType(ElaboratedTypeKeyword Keyword, 657 NestedNameSpecifier *NNS, 658 QualType NamedType); 659 QualType getDependentNameType(ElaboratedTypeKeyword Keyword, 660 NestedNameSpecifier *NNS, 661 const IdentifierInfo *Name, 662 QualType Canon = QualType()); 663 664 QualType getDependentTemplateSpecializationType(ElaboratedTypeKeyword Keyword, 665 NestedNameSpecifier *NNS, 666 const IdentifierInfo *Name, 667 const TemplateArgumentListInfo &Args); 668 QualType getDependentTemplateSpecializationType(ElaboratedTypeKeyword Keyword, 669 NestedNameSpecifier *NNS, 670 const IdentifierInfo *Name, 671 unsigned NumArgs, 672 const TemplateArgument *Args); 673 674 QualType getObjCInterfaceType(const ObjCInterfaceDecl *Decl); 675 676 QualType getObjCObjectType(QualType Base, 677 ObjCProtocolDecl * const *Protocols, 678 unsigned NumProtocols); 679 680 /// getObjCObjectPointerType - Return a ObjCObjectPointerType type 681 /// for the given ObjCObjectType. 682 QualType getObjCObjectPointerType(QualType OIT); 683 684 /// getTypeOfType - GCC extension. 685 QualType getTypeOfExprType(Expr *e); 686 QualType getTypeOfType(QualType t); 687 688 /// getDecltypeType - C++0x decltype. 689 QualType getDecltypeType(Expr *e); 690 691 /// getTagDeclType - Return the unique reference to the type for the 692 /// specified TagDecl (struct/union/class/enum) decl. 693 QualType getTagDeclType(const TagDecl *Decl); 694 695 /// getSizeType - Return the unique type for "size_t" (C99 7.17), defined 696 /// in <stddef.h>. The sizeof operator requires this (C99 6.5.3.4p4). 697 CanQualType getSizeType() const; 698 699 /// getWCharType - In C++, this returns the unique wchar_t type. In C99, this 700 /// returns a type compatible with the type defined in <stddef.h> as defined 701 /// by the target. 702 QualType getWCharType() const { return WCharTy; } 703 704 /// getSignedWCharType - Return the type of "signed wchar_t". 705 /// Used when in C++, as a GCC extension. 706 QualType getSignedWCharType() const; 707 708 /// getUnsignedWCharType - Return the type of "unsigned wchar_t". 709 /// Used when in C++, as a GCC extension. 710 QualType getUnsignedWCharType() const; 711 712 /// getPointerDiffType - Return the unique type for "ptrdiff_t" (ref?) 713 /// defined in <stddef.h>. Pointer - pointer requires this (C99 6.5.6p9). 714 QualType getPointerDiffType() const; 715 716 // getCFConstantStringType - Return the C structure type used to represent 717 // constant CFStrings. 718 QualType getCFConstantStringType(); 719 720 // getNSConstantStringType - Return the C structure type used to represent 721 // constant NSStrings. 722 QualType getNSConstantStringType(); 723 /// Get the structure type used to representation NSStrings, or NULL 724 /// if it hasn't yet been built. 725 QualType getRawNSConstantStringType() { 726 if (NSConstantStringTypeDecl) 727 return getTagDeclType(NSConstantStringTypeDecl); 728 return QualType(); 729 } 730 void setNSConstantStringType(QualType T); 731 732 733 /// Get the structure type used to representation CFStrings, or NULL 734 /// if it hasn't yet been built. 735 QualType getRawCFConstantStringType() { 736 if (CFConstantStringTypeDecl) 737 return getTagDeclType(CFConstantStringTypeDecl); 738 return QualType(); 739 } 740 void setCFConstantStringType(QualType T); 741 742 // This setter/getter represents the ObjC type for an NSConstantString. 743 void setObjCConstantStringInterface(ObjCInterfaceDecl *Decl); 744 QualType getObjCConstantStringInterface() const { 745 return ObjCConstantStringType; 746 } 747 748 //// This gets the struct used to keep track of fast enumerations. 749 QualType getObjCFastEnumerationStateType(); 750 751 /// Get the ObjCFastEnumerationState type, or NULL if it hasn't yet 752 /// been built. 753 QualType getRawObjCFastEnumerationStateType() { 754 if (ObjCFastEnumerationStateTypeDecl) 755 return getTagDeclType(ObjCFastEnumerationStateTypeDecl); 756 return QualType(); 757 } 758 759 void setObjCFastEnumerationStateType(QualType T); 760 761 /// \brief Set the type for the C FILE type. 762 void setFILEDecl(TypeDecl *FILEDecl) { this->FILEDecl = FILEDecl; } 763 764 /// \brief Retrieve the C FILE type. 765 QualType getFILEType() { 766 if (FILEDecl) 767 return getTypeDeclType(FILEDecl); 768 return QualType(); 769 } 770 771 /// \brief Set the type for the C jmp_buf type. 772 void setjmp_bufDecl(TypeDecl *jmp_bufDecl) { 773 this->jmp_bufDecl = jmp_bufDecl; 774 } 775 776 /// \brief Retrieve the C jmp_buf type. 777 QualType getjmp_bufType() { 778 if (jmp_bufDecl) 779 return getTypeDeclType(jmp_bufDecl); 780 return QualType(); 781 } 782 783 /// \brief Set the type for the C sigjmp_buf type. 784 void setsigjmp_bufDecl(TypeDecl *sigjmp_bufDecl) { 785 this->sigjmp_bufDecl = sigjmp_bufDecl; 786 } 787 788 /// \brief Retrieve the C sigjmp_buf type. 789 QualType getsigjmp_bufType() { 790 if (sigjmp_bufDecl) 791 return getTypeDeclType(sigjmp_bufDecl); 792 return QualType(); 793 } 794 795 /// getObjCEncodingForType - Emit the ObjC type encoding for the 796 /// given type into \arg S. If \arg NameFields is specified then 797 /// record field names are also encoded. 798 void getObjCEncodingForType(QualType t, std::string &S, 799 const FieldDecl *Field=0); 800 801 void getLegacyIntegralTypeEncoding(QualType &t) const; 802 803 // Put the string version of type qualifiers into S. 804 void getObjCEncodingForTypeQualifier(Decl::ObjCDeclQualifier QT, 805 std::string &S) const; 806 807 /// getObjCEncodingForMethodDecl - Return the encoded type for this method 808 /// declaration. 809 void getObjCEncodingForMethodDecl(const ObjCMethodDecl *Decl, std::string &S); 810 811 /// getObjCEncodingForBlockDecl - Return the encoded type for this block 812 /// declaration. 813 void getObjCEncodingForBlock(const BlockExpr *Expr, std::string& S); 814 815 /// getObjCEncodingForPropertyDecl - Return the encoded type for 816 /// this method declaration. If non-NULL, Container must be either 817 /// an ObjCCategoryImplDecl or ObjCImplementationDecl; it should 818 /// only be NULL when getting encodings for protocol properties. 819 void getObjCEncodingForPropertyDecl(const ObjCPropertyDecl *PD, 820 const Decl *Container, 821 std::string &S); 822 823 bool ProtocolCompatibleWithProtocol(ObjCProtocolDecl *lProto, 824 ObjCProtocolDecl *rProto); 825 826 /// getObjCEncodingTypeSize returns size of type for objective-c encoding 827 /// purpose in characters. 828 CharUnits getObjCEncodingTypeSize(QualType t); 829 830 /// \brief Whether __[u]int128_t identifier is installed. 831 bool isInt128Installed() const { return IsInt128Installed; } 832 void setInt128Installed() { IsInt128Installed = true; } 833 834 /// This setter/getter represents the ObjC 'id' type. It is setup lazily, by 835 /// Sema. id is always a (typedef for a) pointer type, a pointer to a struct. 836 QualType getObjCIdType() const { return ObjCIdTypedefType; } 837 void setObjCIdType(QualType T); 838 839 void setObjCSelType(QualType T); 840 QualType getObjCSelType() const { return ObjCSelTypedefType; } 841 842 void setObjCProtoType(QualType QT); 843 QualType getObjCProtoType() const { return ObjCProtoType; } 844 845 /// This setter/getter repreents the ObjC 'Class' type. It is setup lazily, by 846 /// Sema. 'Class' is always a (typedef for a) pointer type, a pointer to a 847 /// struct. 848 QualType getObjCClassType() const { return ObjCClassTypedefType; } 849 void setObjCClassType(QualType T); 850 851 void setBuiltinVaListType(QualType T); 852 QualType getBuiltinVaListType() const { return BuiltinVaListType; } 853 854 /// getCVRQualifiedType - Returns a type with additional const, 855 /// volatile, or restrict qualifiers. 856 QualType getCVRQualifiedType(QualType T, unsigned CVR) { 857 return getQualifiedType(T, Qualifiers::fromCVRMask(CVR)); 858 } 859 860 /// getQualifiedType - Returns a type with additional qualifiers. 861 QualType getQualifiedType(QualType T, Qualifiers Qs) { 862 if (!Qs.hasNonFastQualifiers()) 863 return T.withFastQualifiers(Qs.getFastQualifiers()); 864 QualifierCollector Qc(Qs); 865 const Type *Ptr = Qc.strip(T); 866 return getExtQualType(Ptr, Qc); 867 } 868 869 /// getQualifiedType - Returns a type with additional qualifiers. 870 QualType getQualifiedType(const Type *T, Qualifiers Qs) { 871 if (!Qs.hasNonFastQualifiers()) 872 return QualType(T, Qs.getFastQualifiers()); 873 return getExtQualType(T, Qs); 874 } 875 876 DeclarationName getNameForTemplate(TemplateName Name); 877 878 TemplateName getOverloadedTemplateName(UnresolvedSetIterator Begin, 879 UnresolvedSetIterator End); 880 881 TemplateName getQualifiedTemplateName(NestedNameSpecifier *NNS, 882 bool TemplateKeyword, 883 TemplateDecl *Template); 884 885 TemplateName getDependentTemplateName(NestedNameSpecifier *NNS, 886 const IdentifierInfo *Name); 887 TemplateName getDependentTemplateName(NestedNameSpecifier *NNS, 888 OverloadedOperatorKind Operator); 889 890 enum GetBuiltinTypeError { 891 GE_None, //< No error 892 GE_Missing_stdio, //< Missing a type from <stdio.h> 893 GE_Missing_setjmp //< Missing a type from <setjmp.h> 894 }; 895 896 /// GetBuiltinType - Return the type for the specified builtin. 897 QualType GetBuiltinType(unsigned ID, GetBuiltinTypeError &Error); 898 899private: 900 CanQualType getFromTargetType(unsigned Type) const; 901 902 //===--------------------------------------------------------------------===// 903 // Type Predicates. 904 //===--------------------------------------------------------------------===// 905 906public: 907 /// getObjCGCAttr - Returns one of GCNone, Weak or Strong objc's 908 /// garbage collection attribute. 909 /// 910 Qualifiers::GC getObjCGCAttrKind(const QualType &Ty) const; 911 912 /// isObjCNSObjectType - Return true if this is an NSObject object with 913 /// its NSObject attribute set. 914 bool isObjCNSObjectType(QualType Ty) const; 915 916 //===--------------------------------------------------------------------===// 917 // Type Sizing and Analysis 918 //===--------------------------------------------------------------------===// 919 920 /// getFloatTypeSemantics - Return the APFloat 'semantics' for the specified 921 /// scalar floating point type. 922 const llvm::fltSemantics &getFloatTypeSemantics(QualType T) const; 923 924 /// getTypeInfo - Get the size and alignment of the specified complete type in 925 /// bits. 926 std::pair<uint64_t, unsigned> getTypeInfo(const Type *T); 927 std::pair<uint64_t, unsigned> getTypeInfo(QualType T) { 928 return getTypeInfo(T.getTypePtr()); 929 } 930 931 /// getTypeSize - Return the size of the specified type, in bits. This method 932 /// does not work on incomplete types. 933 uint64_t getTypeSize(QualType T) { 934 return getTypeInfo(T).first; 935 } 936 uint64_t getTypeSize(const Type *T) { 937 return getTypeInfo(T).first; 938 } 939 940 /// getCharWidth - Return the size of the character type, in bits 941 uint64_t getCharWidth() { 942 return getTypeSize(CharTy); 943 } 944 945 /// getTypeSizeInChars - Return the size of the specified type, in characters. 946 /// This method does not work on incomplete types. 947 CharUnits getTypeSizeInChars(QualType T); 948 CharUnits getTypeSizeInChars(const Type *T); 949 950 /// getTypeAlign - Return the ABI-specified alignment of a type, in bits. 951 /// This method does not work on incomplete types. 952 unsigned getTypeAlign(QualType T) { 953 return getTypeInfo(T).second; 954 } 955 unsigned getTypeAlign(const Type *T) { 956 return getTypeInfo(T).second; 957 } 958 959 /// getTypeAlignInChars - Return the ABI-specified alignment of a type, in 960 /// characters. This method does not work on incomplete types. 961 CharUnits getTypeAlignInChars(QualType T); 962 CharUnits getTypeAlignInChars(const Type *T); 963 964 std::pair<CharUnits, CharUnits> getTypeInfoInChars(const Type *T); 965 std::pair<CharUnits, CharUnits> getTypeInfoInChars(QualType T); 966 967 /// getPreferredTypeAlign - Return the "preferred" alignment of the specified 968 /// type for the current target in bits. This can be different than the ABI 969 /// alignment in cases where it is beneficial for performance to overalign 970 /// a data type. 971 unsigned getPreferredTypeAlign(const Type *T); 972 973 /// getDeclAlign - Return a conservative estimate of the alignment of 974 /// the specified decl. Note that bitfields do not have a valid alignment, so 975 /// this method will assert on them. 976 /// If @p RefAsPointee, references are treated like their underlying type 977 /// (for alignof), else they're treated like pointers (for CodeGen). 978 CharUnits getDeclAlign(const Decl *D, bool RefAsPointee = false); 979 980 /// getASTRecordLayout - Get or compute information about the layout of the 981 /// specified record (struct/union/class), which indicates its size and field 982 /// position information. 983 const ASTRecordLayout &getASTRecordLayout(const RecordDecl *D); 984 985 /// getASTObjCInterfaceLayout - Get or compute information about the 986 /// layout of the specified Objective-C interface. 987 const ASTRecordLayout &getASTObjCInterfaceLayout(const ObjCInterfaceDecl *D); 988 989 void DumpRecordLayout(const RecordDecl *RD, llvm::raw_ostream &OS); 990 991 /// getASTObjCImplementationLayout - Get or compute information about 992 /// the layout of the specified Objective-C implementation. This may 993 /// differ from the interface if synthesized ivars are present. 994 const ASTRecordLayout & 995 getASTObjCImplementationLayout(const ObjCImplementationDecl *D); 996 997 /// getKeyFunction - Get the key function for the given record decl, or NULL 998 /// if there isn't one. The key function is, according to the Itanium C++ ABI 999 /// section 5.2.3: 1000 /// 1001 /// ...the first non-pure virtual function that is not inline at the point 1002 /// of class definition. 1003 const CXXMethodDecl *getKeyFunction(const CXXRecordDecl *RD); 1004 1005 void CollectObjCIvars(const ObjCInterfaceDecl *OI, 1006 llvm::SmallVectorImpl<FieldDecl*> &Fields); 1007 1008 void ShallowCollectObjCIvars(const ObjCInterfaceDecl *OI, 1009 llvm::SmallVectorImpl<ObjCIvarDecl*> &Ivars); 1010 void CollectNonClassIvars(const ObjCInterfaceDecl *OI, 1011 llvm::SmallVectorImpl<ObjCIvarDecl*> &Ivars); 1012 unsigned CountNonClassIvars(const ObjCInterfaceDecl *OI); 1013 void CollectInheritedProtocols(const Decl *CDecl, 1014 llvm::SmallPtrSet<ObjCProtocolDecl*, 8> &Protocols); 1015 1016 //===--------------------------------------------------------------------===// 1017 // Type Operators 1018 //===--------------------------------------------------------------------===// 1019 1020 /// getCanonicalType - Return the canonical (structural) type corresponding to 1021 /// the specified potentially non-canonical type. The non-canonical version 1022 /// of a type may have many "decorated" versions of types. Decorators can 1023 /// include typedefs, 'typeof' operators, etc. The returned type is guaranteed 1024 /// to be free of any of these, allowing two canonical types to be compared 1025 /// for exact equality with a simple pointer comparison. 1026 CanQualType getCanonicalType(QualType T); 1027 const Type *getCanonicalType(const Type *T) { 1028 return T->getCanonicalTypeInternal().getTypePtr(); 1029 } 1030 1031 /// getCanonicalParamType - Return the canonical parameter type 1032 /// corresponding to the specific potentially non-canonical one. 1033 /// Qualifiers are stripped off, functions are turned into function 1034 /// pointers, and arrays decay one level into pointers. 1035 CanQualType getCanonicalParamType(QualType T); 1036 1037 /// \brief Determine whether the given types are equivalent. 1038 bool hasSameType(QualType T1, QualType T2) { 1039 return getCanonicalType(T1) == getCanonicalType(T2); 1040 } 1041 1042 /// \brief Returns this type as a completely-unqualified array type, 1043 /// capturing the qualifiers in Quals. This will remove the minimal amount of 1044 /// sugaring from the types, similar to the behavior of 1045 /// QualType::getUnqualifiedType(). 1046 /// 1047 /// \param T is the qualified type, which may be an ArrayType 1048 /// 1049 /// \param Quals will receive the full set of qualifiers that were 1050 /// applied to the array. 1051 /// 1052 /// \returns if this is an array type, the completely unqualified array type 1053 /// that corresponds to it. Otherwise, returns T.getUnqualifiedType(). 1054 QualType getUnqualifiedArrayType(QualType T, Qualifiers &Quals); 1055 1056 /// \brief Determine whether the given types are equivalent after 1057 /// cvr-qualifiers have been removed. 1058 bool hasSameUnqualifiedType(QualType T1, QualType T2) { 1059 CanQualType CT1 = getCanonicalType(T1); 1060 CanQualType CT2 = getCanonicalType(T2); 1061 1062 Qualifiers Quals; 1063 QualType UnqualT1 = getUnqualifiedArrayType(CT1, Quals); 1064 QualType UnqualT2 = getUnqualifiedArrayType(CT2, Quals); 1065 return UnqualT1 == UnqualT2; 1066 } 1067 1068 bool UnwrapSimilarPointerTypes(QualType &T1, QualType &T2); 1069 1070 /// \brief Retrieves the "canonical" declaration of 1071 1072 /// \brief Retrieves the "canonical" nested name specifier for a 1073 /// given nested name specifier. 1074 /// 1075 /// The canonical nested name specifier is a nested name specifier 1076 /// that uniquely identifies a type or namespace within the type 1077 /// system. For example, given: 1078 /// 1079 /// \code 1080 /// namespace N { 1081 /// struct S { 1082 /// template<typename T> struct X { typename T* type; }; 1083 /// }; 1084 /// } 1085 /// 1086 /// template<typename T> struct Y { 1087 /// typename N::S::X<T>::type member; 1088 /// }; 1089 /// \endcode 1090 /// 1091 /// Here, the nested-name-specifier for N::S::X<T>:: will be 1092 /// S::X<template-param-0-0>, since 'S' and 'X' are uniquely defined 1093 /// by declarations in the type system and the canonical type for 1094 /// the template type parameter 'T' is template-param-0-0. 1095 NestedNameSpecifier * 1096 getCanonicalNestedNameSpecifier(NestedNameSpecifier *NNS); 1097 1098 /// \brief Retrieves the canonical representation of the given 1099 /// calling convention. 1100 CallingConv getCanonicalCallConv(CallingConv CC) { 1101 if (CC == CC_C) 1102 return CC_Default; 1103 return CC; 1104 } 1105 1106 /// \brief Determines whether two calling conventions name the same 1107 /// calling convention. 1108 bool isSameCallConv(CallingConv lcc, CallingConv rcc) { 1109 return (getCanonicalCallConv(lcc) == getCanonicalCallConv(rcc)); 1110 } 1111 1112 /// \brief Retrieves the "canonical" template name that refers to a 1113 /// given template. 1114 /// 1115 /// The canonical template name is the simplest expression that can 1116 /// be used to refer to a given template. For most templates, this 1117 /// expression is just the template declaration itself. For example, 1118 /// the template std::vector can be referred to via a variety of 1119 /// names---std::vector, ::std::vector, vector (if vector is in 1120 /// scope), etc.---but all of these names map down to the same 1121 /// TemplateDecl, which is used to form the canonical template name. 1122 /// 1123 /// Dependent template names are more interesting. Here, the 1124 /// template name could be something like T::template apply or 1125 /// std::allocator<T>::template rebind, where the nested name 1126 /// specifier itself is dependent. In this case, the canonical 1127 /// template name uses the shortest form of the dependent 1128 /// nested-name-specifier, which itself contains all canonical 1129 /// types, values, and templates. 1130 TemplateName getCanonicalTemplateName(TemplateName Name); 1131 1132 /// \brief Determine whether the given template names refer to the same 1133 /// template. 1134 bool hasSameTemplateName(TemplateName X, TemplateName Y); 1135 1136 /// \brief Retrieve the "canonical" template argument. 1137 /// 1138 /// The canonical template argument is the simplest template argument 1139 /// (which may be a type, value, expression, or declaration) that 1140 /// expresses the value of the argument. 1141 TemplateArgument getCanonicalTemplateArgument(const TemplateArgument &Arg); 1142 1143 /// Type Query functions. If the type is an instance of the specified class, 1144 /// return the Type pointer for the underlying maximally pretty type. This 1145 /// is a member of ASTContext because this may need to do some amount of 1146 /// canonicalization, e.g. to move type qualifiers into the element type. 1147 const ArrayType *getAsArrayType(QualType T); 1148 const ConstantArrayType *getAsConstantArrayType(QualType T) { 1149 return dyn_cast_or_null<ConstantArrayType>(getAsArrayType(T)); 1150 } 1151 const VariableArrayType *getAsVariableArrayType(QualType T) { 1152 return dyn_cast_or_null<VariableArrayType>(getAsArrayType(T)); 1153 } 1154 const IncompleteArrayType *getAsIncompleteArrayType(QualType T) { 1155 return dyn_cast_or_null<IncompleteArrayType>(getAsArrayType(T)); 1156 } 1157 const DependentSizedArrayType *getAsDependentSizedArrayType(QualType T) { 1158 return dyn_cast_or_null<DependentSizedArrayType>(getAsArrayType(T)); 1159 } 1160 1161 /// getBaseElementType - Returns the innermost element type of an array type. 1162 /// For example, will return "int" for int[m][n] 1163 QualType getBaseElementType(const ArrayType *VAT); 1164 1165 /// getBaseElementType - Returns the innermost element type of a type 1166 /// (which needn't actually be an array type). 1167 QualType getBaseElementType(QualType QT); 1168 1169 /// getConstantArrayElementCount - Returns number of constant array elements. 1170 uint64_t getConstantArrayElementCount(const ConstantArrayType *CA) const; 1171 1172 /// getArrayDecayedType - Return the properly qualified result of decaying the 1173 /// specified array type to a pointer. This operation is non-trivial when 1174 /// handling typedefs etc. The canonical type of "T" must be an array type, 1175 /// this returns a pointer to a properly qualified element of the array. 1176 /// 1177 /// See C99 6.7.5.3p7 and C99 6.3.2.1p3. 1178 QualType getArrayDecayedType(QualType T); 1179 1180 /// getPromotedIntegerType - Returns the type that Promotable will 1181 /// promote to: C99 6.3.1.1p2, assuming that Promotable is a promotable 1182 /// integer type. 1183 QualType getPromotedIntegerType(QualType PromotableType); 1184 1185 /// \brief Whether this is a promotable bitfield reference according 1186 /// to C99 6.3.1.1p2, bullet 2 (and GCC extensions). 1187 /// 1188 /// \returns the type this bit-field will promote to, or NULL if no 1189 /// promotion occurs. 1190 QualType isPromotableBitField(Expr *E); 1191 1192 /// getIntegerTypeOrder - Returns the highest ranked integer type: 1193 /// C99 6.3.1.8p1. If LHS > RHS, return 1. If LHS == RHS, return 0. If 1194 /// LHS < RHS, return -1. 1195 int getIntegerTypeOrder(QualType LHS, QualType RHS); 1196 1197 /// getFloatingTypeOrder - Compare the rank of the two specified floating 1198 /// point types, ignoring the domain of the type (i.e. 'double' == 1199 /// '_Complex double'). If LHS > RHS, return 1. If LHS == RHS, return 0. If 1200 /// LHS < RHS, return -1. 1201 int getFloatingTypeOrder(QualType LHS, QualType RHS); 1202 1203 /// getFloatingTypeOfSizeWithinDomain - Returns a real floating 1204 /// point or a complex type (based on typeDomain/typeSize). 1205 /// 'typeDomain' is a real floating point or complex type. 1206 /// 'typeSize' is a real floating point or complex type. 1207 QualType getFloatingTypeOfSizeWithinDomain(QualType typeSize, 1208 QualType typeDomain) const; 1209 1210private: 1211 // Helper for integer ordering 1212 unsigned getIntegerRank(Type* T); 1213 1214public: 1215 1216 //===--------------------------------------------------------------------===// 1217 // Type Compatibility Predicates 1218 //===--------------------------------------------------------------------===// 1219 1220 /// Compatibility predicates used to check assignment expressions. 1221 bool typesAreCompatible(QualType, QualType); // C99 6.2.7p1 1222 1223 bool typesAreBlockPointerCompatible(QualType, QualType); 1224 1225 bool isObjCIdType(QualType T) const { 1226 return T == ObjCIdTypedefType; 1227 } 1228 bool isObjCClassType(QualType T) const { 1229 return T == ObjCClassTypedefType; 1230 } 1231 bool isObjCSelType(QualType T) const { 1232 return T == ObjCSelTypedefType; 1233 } 1234 bool QualifiedIdConformsQualifiedId(QualType LHS, QualType RHS); 1235 bool ObjCQualifiedIdTypesAreCompatible(QualType LHS, QualType RHS, 1236 bool ForCompare); 1237 1238 // Check the safety of assignment from LHS to RHS 1239 bool canAssignObjCInterfaces(const ObjCObjectPointerType *LHSOPT, 1240 const ObjCObjectPointerType *RHSOPT); 1241 bool canAssignObjCInterfaces(const ObjCObjectType *LHS, 1242 const ObjCObjectType *RHS); 1243 bool canAssignObjCInterfacesInBlockPointer( 1244 const ObjCObjectPointerType *LHSOPT, 1245 const ObjCObjectPointerType *RHSOPT); 1246 bool areComparableObjCPointerTypes(QualType LHS, QualType RHS); 1247 QualType areCommonBaseCompatible(const ObjCObjectPointerType *LHSOPT, 1248 const ObjCObjectPointerType *RHSOPT); 1249 1250 // Functions for calculating composite types 1251 QualType mergeTypes(QualType, QualType, bool OfBlockPointer=false); 1252 QualType mergeFunctionTypes(QualType, QualType, bool OfBlockPointer=false); 1253 1254 QualType mergeObjCGCQualifiers(QualType, QualType); 1255 1256 /// UsualArithmeticConversionsType - handles the various conversions 1257 /// that are common to binary operators (C99 6.3.1.8, C++ [expr]p9) 1258 /// and returns the result type of that conversion. 1259 QualType UsualArithmeticConversionsType(QualType lhs, QualType rhs); 1260 1261 //===--------------------------------------------------------------------===// 1262 // Integer Predicates 1263 //===--------------------------------------------------------------------===// 1264 1265 // The width of an integer, as defined in C99 6.2.6.2. This is the number 1266 // of bits in an integer type excluding any padding bits. 1267 unsigned getIntWidth(QualType T); 1268 1269 // Per C99 6.2.5p6, for every signed integer type, there is a corresponding 1270 // unsigned integer type. This method takes a signed type, and returns the 1271 // corresponding unsigned integer type. 1272 QualType getCorrespondingUnsignedType(QualType T); 1273 1274 //===--------------------------------------------------------------------===// 1275 // Type Iterators. 1276 //===--------------------------------------------------------------------===// 1277 1278 typedef std::vector<Type*>::iterator type_iterator; 1279 typedef std::vector<Type*>::const_iterator const_type_iterator; 1280 1281 type_iterator types_begin() { return Types.begin(); } 1282 type_iterator types_end() { return Types.end(); } 1283 const_type_iterator types_begin() const { return Types.begin(); } 1284 const_type_iterator types_end() const { return Types.end(); } 1285 1286 //===--------------------------------------------------------------------===// 1287 // Integer Values 1288 //===--------------------------------------------------------------------===// 1289 1290 /// MakeIntValue - Make an APSInt of the appropriate width and 1291 /// signedness for the given \arg Value and integer \arg Type. 1292 llvm::APSInt MakeIntValue(uint64_t Value, QualType Type) { 1293 llvm::APSInt Res(getIntWidth(Type), !Type->isSignedIntegerType()); 1294 Res = Value; 1295 return Res; 1296 } 1297 1298 /// \brief Get the implementation of ObjCInterfaceDecl,or NULL if none exists. 1299 ObjCImplementationDecl *getObjCImplementation(ObjCInterfaceDecl *D); 1300 /// \brief Get the implementation of ObjCCategoryDecl, or NULL if none exists. 1301 ObjCCategoryImplDecl *getObjCImplementation(ObjCCategoryDecl *D); 1302 1303 /// \brief Set the implementation of ObjCInterfaceDecl. 1304 void setObjCImplementation(ObjCInterfaceDecl *IFaceD, 1305 ObjCImplementationDecl *ImplD); 1306 /// \brief Set the implementation of ObjCCategoryDecl. 1307 void setObjCImplementation(ObjCCategoryDecl *CatD, 1308 ObjCCategoryImplDecl *ImplD); 1309 1310 /// \brief Allocate an uninitialized TypeSourceInfo. 1311 /// 1312 /// The caller should initialize the memory held by TypeSourceInfo using 1313 /// the TypeLoc wrappers. 1314 /// 1315 /// \param T the type that will be the basis for type source info. This type 1316 /// should refer to how the declarator was written in source code, not to 1317 /// what type semantic analysis resolved the declarator to. 1318 /// 1319 /// \param Size the size of the type info to create, or 0 if the size 1320 /// should be calculated based on the type. 1321 TypeSourceInfo *CreateTypeSourceInfo(QualType T, unsigned Size = 0); 1322 1323 /// \brief Allocate a TypeSourceInfo where all locations have been 1324 /// initialized to a given location, which defaults to the empty 1325 /// location. 1326 TypeSourceInfo * 1327 getTrivialTypeSourceInfo(QualType T, SourceLocation Loc = SourceLocation()); 1328 1329 TypeSourceInfo *getNullTypeSourceInfo() { return &NullTypeSourceInfo; } 1330 1331 /// \brief Add a deallocation callback that will be invoked when the 1332 /// ASTContext is destroyed. 1333 /// 1334 /// \brief Callback A callback function that will be invoked on destruction. 1335 /// 1336 /// \brief Data Pointer data that will be provided to the callback function 1337 /// when it is called. 1338 void AddDeallocation(void (*Callback)(void*), void *Data); 1339 1340 //===--------------------------------------------------------------------===// 1341 // Statistics 1342 //===--------------------------------------------------------------------===// 1343 1344 /// \brief The number of implicitly-declared default constructors. 1345 static unsigned NumImplicitDefaultConstructors; 1346 1347 /// \brief The number of implicitly-declared default constructors for 1348 /// which declarations were built. 1349 static unsigned NumImplicitDefaultConstructorsDeclared; 1350 1351 /// \brief The number of implicitly-declared copy constructors. 1352 static unsigned NumImplicitCopyConstructors; 1353 1354 /// \brief The number of implicitly-declared copy constructors for 1355 /// which declarations were built. 1356 static unsigned NumImplicitCopyConstructorsDeclared; 1357 1358 /// \brief The number of implicitly-declared copy assignment operators. 1359 static unsigned NumImplicitCopyAssignmentOperators; 1360 1361 /// \brief The number of implicitly-declared copy assignment operators for 1362 /// which declarations were built. 1363 static unsigned NumImplicitCopyAssignmentOperatorsDeclared; 1364 1365 /// \brief The number of implicitly-declared destructors. 1366 static unsigned NumImplicitDestructors; 1367 1368 /// \brief The number of implicitly-declared destructors for which 1369 /// declarations were built. 1370 static unsigned NumImplicitDestructorsDeclared; 1371 1372private: 1373 ASTContext(const ASTContext&); // DO NOT IMPLEMENT 1374 void operator=(const ASTContext&); // DO NOT IMPLEMENT 1375 1376 void InitBuiltinTypes(); 1377 void InitBuiltinType(CanQualType &R, BuiltinType::Kind K); 1378 1379 // Return the ObjC type encoding for a given type. 1380 void getObjCEncodingForTypeImpl(QualType t, std::string &S, 1381 bool ExpandPointedToStructures, 1382 bool ExpandStructures, 1383 const FieldDecl *Field, 1384 bool OutermostType = false, 1385 bool EncodingProperty = false); 1386 1387 const ASTRecordLayout &getObjCLayout(const ObjCInterfaceDecl *D, 1388 const ObjCImplementationDecl *Impl); 1389 1390private: 1391 /// \brief A set of deallocations that should be performed when the 1392 /// ASTContext is destroyed. 1393 llvm::SmallVector<std::pair<void (*)(void*), void *>, 16> Deallocations; 1394 1395 // FIXME: This currently contains the set of StoredDeclMaps used 1396 // by DeclContext objects. This probably should not be in ASTContext, 1397 // but we include it here so that ASTContext can quickly deallocate them. 1398 llvm::PointerIntPair<StoredDeclsMap*,1> LastSDM; 1399 1400 /// \brief A counter used to uniquely identify "blocks". 1401 unsigned int UniqueBlockByRefTypeID; 1402 unsigned int UniqueBlockParmTypeID; 1403 1404 friend class DeclContext; 1405 friend class DeclarationNameTable; 1406 void ReleaseDeclContextMaps(); 1407}; 1408 1409/// @brief Utility function for constructing a nullary selector. 1410static inline Selector GetNullarySelector(const char* name, ASTContext& Ctx) { 1411 IdentifierInfo* II = &Ctx.Idents.get(name); 1412 return Ctx.Selectors.getSelector(0, &II); 1413} 1414 1415/// @brief Utility function for constructing an unary selector. 1416static inline Selector GetUnarySelector(const char* name, ASTContext& Ctx) { 1417 IdentifierInfo* II = &Ctx.Idents.get(name); 1418 return Ctx.Selectors.getSelector(1, &II); 1419} 1420 1421} // end namespace clang 1422 1423// operator new and delete aren't allowed inside namespaces. 1424// The throw specifications are mandated by the standard. 1425/// @brief Placement new for using the ASTContext's allocator. 1426/// 1427/// This placement form of operator new uses the ASTContext's allocator for 1428/// obtaining memory. It is a non-throwing new, which means that it returns 1429/// null on error. (If that is what the allocator does. The current does, so if 1430/// this ever changes, this operator will have to be changed, too.) 1431/// Usage looks like this (assuming there's an ASTContext 'Context' in scope): 1432/// @code 1433/// // Default alignment (8) 1434/// IntegerLiteral *Ex = new (Context) IntegerLiteral(arguments); 1435/// // Specific alignment 1436/// IntegerLiteral *Ex2 = new (Context, 4) IntegerLiteral(arguments); 1437/// @endcode 1438/// Please note that you cannot use delete on the pointer; it must be 1439/// deallocated using an explicit destructor call followed by 1440/// @c Context.Deallocate(Ptr). 1441/// 1442/// @param Bytes The number of bytes to allocate. Calculated by the compiler. 1443/// @param C The ASTContext that provides the allocator. 1444/// @param Alignment The alignment of the allocated memory (if the underlying 1445/// allocator supports it). 1446/// @return The allocated memory. Could be NULL. 1447inline void *operator new(size_t Bytes, clang::ASTContext &C, 1448 size_t Alignment) throw () { 1449 return C.Allocate(Bytes, Alignment); 1450} 1451/// @brief Placement delete companion to the new above. 1452/// 1453/// This operator is just a companion to the new above. There is no way of 1454/// invoking it directly; see the new operator for more details. This operator 1455/// is called implicitly by the compiler if a placement new expression using 1456/// the ASTContext throws in the object constructor. 1457inline void operator delete(void *Ptr, clang::ASTContext &C, size_t) 1458 throw () { 1459 C.Deallocate(Ptr); 1460} 1461 1462/// This placement form of operator new[] uses the ASTContext's allocator for 1463/// obtaining memory. It is a non-throwing new[], which means that it returns 1464/// null on error. 1465/// Usage looks like this (assuming there's an ASTContext 'Context' in scope): 1466/// @code 1467/// // Default alignment (8) 1468/// char *data = new (Context) char[10]; 1469/// // Specific alignment 1470/// char *data = new (Context, 4) char[10]; 1471/// @endcode 1472/// Please note that you cannot use delete on the pointer; it must be 1473/// deallocated using an explicit destructor call followed by 1474/// @c Context.Deallocate(Ptr). 1475/// 1476/// @param Bytes The number of bytes to allocate. Calculated by the compiler. 1477/// @param C The ASTContext that provides the allocator. 1478/// @param Alignment The alignment of the allocated memory (if the underlying 1479/// allocator supports it). 1480/// @return The allocated memory. Could be NULL. 1481inline void *operator new[](size_t Bytes, clang::ASTContext& C, 1482 size_t Alignment = 8) throw () { 1483 return C.Allocate(Bytes, Alignment); 1484} 1485 1486/// @brief Placement delete[] companion to the new[] above. 1487/// 1488/// This operator is just a companion to the new[] above. There is no way of 1489/// invoking it directly; see the new[] operator for more details. This operator 1490/// is called implicitly by the compiler if a placement new[] expression using 1491/// the ASTContext throws in the object constructor. 1492inline void operator delete[](void *Ptr, clang::ASTContext &C, size_t) 1493 throw () { 1494 C.Deallocate(Ptr); 1495} 1496 1497#endif 1498