ASTContext.h revision b62f6813406a03bf8a371c4e46c9fad51d102121
15f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===--- ASTContext.h - Context to hold long-lived AST nodes ----*- C++ -*-===//
25f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//
35f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//                     The LLVM Compiler Infrastructure
45f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//
55f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// This file was developed by Chris Lattner and is distributed under
65f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer// the University of Illinois Open Source License. See LICENSE.TXT for details.
75f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//
85f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===//
95f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//
105f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//  This file defines the ASTContext interface.
115f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//
125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer//===----------------------------------------------------------------------===//
135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
145f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#ifndef LLVM_CLANG_AST_ASTCONTEXT_H
155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#define LLVM_CLANG_AST_ASTCONTEXT_H
165f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
175f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/AST/Builtins.h"
185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include "clang/AST/Expr.h"
19464175bba1318bef7905122e9fda20cff926df78Chris Lattner#include "clang/AST/RecordLayout.h"
20464175bba1318bef7905122e9fda20cff926df78Chris Lattner#include "clang/AST/Type.h"
21464175bba1318bef7905122e9fda20cff926df78Chris Lattner#include "llvm/ADT/DenseMap.h"
22a9aa5e69d8253e196be90c070738ab5bd9813730Steve Naroff#include "llvm/ADT/StringMap.h"
2368d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff#include "llvm/ADT/FoldingSet.h"
245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#include <vector>
255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencernamespace clang {
275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  class TargetInfo;
28c7229c338c21ef26b01ef3ecf9eec4fd373fa9ecChris Lattner  class IdentifierTable;
29980e508ca70d6de75d2abfd96b4681fc98bb2698Steve Naroff
305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// ASTContext - This class holds long-lived AST nodes (such as types and
315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer/// decls) that can be referred to throughout the semantic analysis of a file.
325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerclass ASTContext {
335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  std::vector<Type*> Types;
345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  llvm::FoldingSet<ComplexType> ComplexTypes;
355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  llvm::FoldingSet<PointerType> PointerTypes;
365f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  llvm::FoldingSet<ReferenceType> ReferenceTypes;
37fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff  llvm::FoldingSet<ConstantArrayType> ArrayTypes;
385f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  llvm::FoldingSet<VectorType> VectorTypes;
395f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  llvm::FoldingSet<FunctionTypeNoProto> FunctionTypeNoProtos;
405f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  llvm::FoldingSet<FunctionTypeProto> FunctionTypeProtos;
414b6c9051c6522894978c9ba6a819a659d102db36Fariborz Jahanian  llvm::FoldingSet<ObjcQualifiedInterfaceType> ObjcQualifiedInterfaceTypes;
42464175bba1318bef7905122e9fda20cff926df78Chris Lattner  llvm::DenseMap<const RecordDecl*, const RecordLayout*> RecordLayoutInfo;
43b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson
44b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson  /// BuiltinVaListType - built-in va list type.
45b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson  /// This is initially null and set by Sema::LazilyCreateBuiltin when
46b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson  /// a builtin that takes a valist is encountered.
47b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson  QualType BuiltinVaListType;
487e219e47de26346885d667131977bd9ca2d7662aSteve Naroff
497e219e47de26346885d667131977bd9ca2d7662aSteve Naroff  /// ObjcIdType - a psuedo built-in typedef type (set by Sema).
507e219e47de26346885d667131977bd9ca2d7662aSteve Naroff  QualType ObjcIdType;
517e219e47de26346885d667131977bd9ca2d7662aSteve Naroff  const RecordType *IdStructType;
522198891824c38d45b2279de5d5e3ef9394eb457cSteve Naroff
53b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian  /// ObjcSelType - another psuedo built-in typedef type (set by Sema).
54b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian  QualType ObjcSelType;
55b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian  const RecordType *SelStructType;
56b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian
572198891824c38d45b2279de5d5e3ef9394eb457cSteve Naroff  QualType ObjcConstantStringType;
582198891824c38d45b2279de5d5e3ef9394eb457cSteve Naroff  RecordDecl *CFConstantStringTypeDecl;
595f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerpublic:
601d5b0e37cd569f3d1ddfc5cabff649ef7e42f3c6Fariborz Jahanian
61b800dc2d5e27ec60f567567b623cdc61152b8fb8Chris Lattner  SourceManager &SourceMgr;
625f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  TargetInfo &Target;
6371993dd85eed9cc42c6b2fa61ee5c53026b74817Anders Carlsson  IdentifierTable &Idents;
6429238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff  SelectorTable &Selectors;
655f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  Builtin::Context BuiltinInfo;
665f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
675f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  // Builtin Types.
685f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType VoidTy;
695f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType BoolTy;
705f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType CharTy;
715f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType SignedCharTy, ShortTy, IntTy, LongTy, LongLongTy;
725f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType UnsignedCharTy, UnsignedShortTy, UnsignedIntTy, UnsignedLongTy;
735f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType UnsignedLongLongTy;
745f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType FloatTy, DoubleTy, LongDoubleTy;
755f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType FloatComplexTy, DoubleComplexTy, LongDoubleComplexTy;
765f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
7768d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff  ASTContext(SourceManager &SM, TargetInfo &t, IdentifierTable &idents,
7829238a0bf7cbf5b396efb451a0adb5fe4aa037caSteve Naroff             SelectorTable &sels) :
7968d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff    CFConstantStringTypeDecl(0), SourceMgr(SM), Target(t),
8068d331a78e655d97294e94fcfa63f92cc1f40578Steve Naroff    Idents(idents), Selectors(sels) {
815f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer    InitBuiltinTypes();
825f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer    BuiltinInfo.InitializeBuiltins(idents, Target);
835f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  }
845f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  ~ASTContext();
855f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
865f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  void PrintStats() const;
87d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner
88464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //===--------------------------------------------------------------------===//
89464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //                           Type Constructors
90464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //===--------------------------------------------------------------------===//
91d2d2a11a91d7ddf468bfb70f66362d24806ed601Chris Lattner
925f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getComplexType - Return the uniqued reference to the type for a complex
935f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// number with the specified element type.
945f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getComplexType(QualType T);
955f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
965f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getPointerType - Return the uniqued reference to the type for a pointer to
975f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// the specified type.
985f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getPointerType(QualType T);
995f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
1005f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getReferenceType - Return the uniqued reference to the type for a
1015f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// reference to the specified type.
1025f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getReferenceType(QualType T);
1035f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
104bdbf7b030a3e0ddb95240076683830e6f78c79a5Steve Naroff  /// getVariableArrayType - Returns a non-unique reference to the type for a
105bdbf7b030a3e0ddb95240076683830e6f78c79a5Steve Naroff  /// variable array of the specified element type.
106c9406125e2cac9208098655ac8058c095c2c3a65Steve Naroff  QualType getVariableArrayType(QualType EltTy, Expr *NumElts,
107c9406125e2cac9208098655ac8058c095c2c3a65Steve Naroff                                ArrayType::ArraySizeModifier ASM,
108c9406125e2cac9208098655ac8058c095c2c3a65Steve Naroff                                unsigned EltTypeQuals);
109fb22d96692c5240fb8d611290dbf7eeed3759c73Steve Naroff
110bdbf7b030a3e0ddb95240076683830e6f78c79a5Steve Naroff  /// getConstantArrayType - Return the unique reference to the type for a
111bdbf7b030a3e0ddb95240076683830e6f78c79a5Steve Naroff  /// constant array of the specified element type.
112c9406125e2cac9208098655ac8058c095c2c3a65Steve Naroff  QualType getConstantArrayType(QualType EltTy, const llvm::APInt &ArySize,
113c9406125e2cac9208098655ac8058c095c2c3a65Steve Naroff                                ArrayType::ArraySizeModifier ASM,
114c9406125e2cac9208098655ac8058c095c2c3a65Steve Naroff                                unsigned EltTypeQuals);
1155f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
11673322924127c873c13101b705dd823f5539ffa5fSteve Naroff  /// getVectorType - Return the unique reference to a vector type of
11773322924127c873c13101b705dd823f5539ffa5fSteve Naroff  /// the specified element type and size. VectorType must be a built-in type.
11873322924127c873c13101b705dd823f5539ffa5fSteve Naroff  QualType getVectorType(QualType VectorType, unsigned NumElts);
11973322924127c873c13101b705dd823f5539ffa5fSteve Naroff
12073322924127c873c13101b705dd823f5539ffa5fSteve Naroff  /// getOCUVectorType - Return the unique reference to an OCU vector type of
12173322924127c873c13101b705dd823f5539ffa5fSteve Naroff  /// the specified element type and size. VectorType must be a built-in type.
12273322924127c873c13101b705dd823f5539ffa5fSteve Naroff  QualType getOCUVectorType(QualType VectorType, unsigned NumElts);
1235f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
1245f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getFunctionTypeNoProto - Return a K&R style C function type like 'int()'.
1255f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  ///
1265f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getFunctionTypeNoProto(QualType ResultTy);
1275f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
1285f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getFunctionType - Return a normal function type with a typed argument
1295f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// list.  isVariadic indicates whether the argument list includes '...'.
1305f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getFunctionType(QualType ResultTy, QualType *ArgArray,
1315f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer                           unsigned NumArgs, bool isVariadic);
1325f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
1335f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getTypedefType - Return the unique reference to the type for the
1345f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// specified typename decl.
1355f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getTypedefType(TypedefDecl *Decl);
1363536b443bc50d58a79f14fca9b6842541a434854Steve Naroff  QualType getObjcInterfaceType(ObjcInterfaceDecl *Decl);
1374b6c9051c6522894978c9ba6a819a659d102db36Fariborz Jahanian
1384b6c9051c6522894978c9ba6a819a659d102db36Fariborz Jahanian  /// getObjcQualifiedInterfaceType - Return a
1394b6c9051c6522894978c9ba6a819a659d102db36Fariborz Jahanian  /// ObjcQualifiedInterfaceType type for the given interface decl and
1404b6c9051c6522894978c9ba6a819a659d102db36Fariborz Jahanian  /// the conforming protocol list.
1414b6c9051c6522894978c9ba6a819a659d102db36Fariborz Jahanian  QualType getObjcQualifiedInterfaceType(ObjcInterfaceDecl *Decl,
1424b6c9051c6522894978c9ba6a819a659d102db36Fariborz Jahanian             ObjcProtocolDecl **ProtocolList, unsigned NumProtocols);
1435f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
144d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff  /// getTypeOfType - GCC extension.
1458d1a3b8ca1e5fcc4567b5a6f51d82be2e460de1cSteve Naroff  QualType getTypeOfExpr(Expr *e);
146d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff  QualType getTypeOfType(QualType t);
147d1861fd633d5096a00777c918eb8575ea7162fe7Steve Naroff
1485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getTagDeclType - Return the unique reference to the type for the
1495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// specified TagDecl (struct/union/class/enum) decl.
1505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getTagDeclType(TagDecl *Decl);
1515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
1525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// getSizeType - Return the unique type for "size_t" (C99 7.17), defined
1535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  /// in <stddef.h>. The sizeof operator requires this (C99 6.5.3.4p4).
1545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  QualType getSizeType() const;
1555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
1568b9023ba35a86838789e2c9034a6128728c547aaChris Lattner  /// getPointerDiffType - Return the unique type for "ptrdiff_t" (ref?)
1578b9023ba35a86838789e2c9034a6128728c547aaChris Lattner  /// defined in <stddef.h>. Pointer - pointer requires this (C99 6.5.6p9).
1588b9023ba35a86838789e2c9034a6128728c547aaChris Lattner  QualType getPointerDiffType() const;
1598b9023ba35a86838789e2c9034a6128728c547aaChris Lattner
1602198891824c38d45b2279de5d5e3ef9394eb457cSteve Naroff  // getCFConstantStringType - Return the type used for constant CFStrings.
1612198891824c38d45b2279de5d5e3ef9394eb457cSteve Naroff  // CURRENTLY UNUSED (10/15/07). ObjCStringLiteral now uses the hook below.
16271993dd85eed9cc42c6b2fa61ee5c53026b74817Anders Carlsson  QualType getCFConstantStringType();
16371993dd85eed9cc42c6b2fa61ee5c53026b74817Anders Carlsson
164983df5b2280980e59b0b062bcc2882230465a61eSteve Naroff  // This setter/getter represents the ObjC type for an NSConstantString.
1652198891824c38d45b2279de5d5e3ef9394eb457cSteve Naroff  void setObjcConstantStringInterface(ObjcInterfaceDecl *Decl);
1662198891824c38d45b2279de5d5e3ef9394eb457cSteve Naroff  QualType getObjcConstantStringInterface() const {
1672198891824c38d45b2279de5d5e3ef9394eb457cSteve Naroff    return ObjcConstantStringType;
1682198891824c38d45b2279de5d5e3ef9394eb457cSteve Naroff  }
169b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian
170983df5b2280980e59b0b062bcc2882230465a61eSteve Naroff  // This setter/getter repreents the ObjC 'id' type. It is setup lazily, by
171983df5b2280980e59b0b062bcc2882230465a61eSteve Naroff  // Sema.
1727e219e47de26346885d667131977bd9ca2d7662aSteve Naroff  void setObjcIdType(TypedefDecl *Decl);
1737e219e47de26346885d667131977bd9ca2d7662aSteve Naroff  QualType getObjcIdType() const { return ObjcIdType; }
174b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian
175b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian  void setObjcSelType(TypedefDecl *Decl);
176b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian  QualType getObjcSelType() const { return ObjcSelType; }
177b62f6813406a03bf8a371c4e46c9fad51d102121Fariborz Jahanian
178b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson  void setBuiltinVaListType(QualType T);
179b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson  QualType getBuiltinVaListType() const { return BuiltinVaListType; }
180b2cf3573d7351094f6247fcca94703ce88eb9ee0Anders Carlsson
181464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //===--------------------------------------------------------------------===//
182464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //                         Type Sizing and Analysis
183464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //===--------------------------------------------------------------------===//
184464175bba1318bef7905122e9fda20cff926df78Chris Lattner
185464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// getTypeInfo - Get the size and alignment of the specified complete type in
186464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// bits.
187464175bba1318bef7905122e9fda20cff926df78Chris Lattner  std::pair<uint64_t, unsigned> getTypeInfo(QualType T, SourceLocation L);
188464175bba1318bef7905122e9fda20cff926df78Chris Lattner
189464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// getTypeSize - Return the size of the specified type, in bits.  This method
190464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// does not work on incomplete types.
191464175bba1318bef7905122e9fda20cff926df78Chris Lattner  uint64_t getTypeSize(QualType T, SourceLocation L) {
192464175bba1318bef7905122e9fda20cff926df78Chris Lattner    return getTypeInfo(T, L).first;
193464175bba1318bef7905122e9fda20cff926df78Chris Lattner  }
194464175bba1318bef7905122e9fda20cff926df78Chris Lattner
195464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// getTypeAlign - Return the alignment of the specified type, in bits.  This
196464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// method does not work on incomplete types.
197464175bba1318bef7905122e9fda20cff926df78Chris Lattner  unsigned getTypeAlign(QualType T, SourceLocation L) {
198464175bba1318bef7905122e9fda20cff926df78Chris Lattner    return getTypeInfo(T, L).second;
199464175bba1318bef7905122e9fda20cff926df78Chris Lattner  }
200464175bba1318bef7905122e9fda20cff926df78Chris Lattner
201464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// getRecordLayout - Get or compute information about the layout of the
202464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// specified record (struct/union/class), which indicates its size and field
203464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// position information.
204464175bba1318bef7905122e9fda20cff926df78Chris Lattner  const RecordLayout &getRecordLayout(const RecordDecl *D, SourceLocation L);
205464175bba1318bef7905122e9fda20cff926df78Chris Lattner
206464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //===--------------------------------------------------------------------===//
207464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //                            Type Operators
208464175bba1318bef7905122e9fda20cff926df78Chris Lattner  //===--------------------------------------------------------------------===//
209464175bba1318bef7905122e9fda20cff926df78Chris Lattner
210464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// maxIntegerType - Returns the highest ranked integer type. Handles 3
211464175bba1318bef7905122e9fda20cff926df78Chris Lattner  /// different type combos: unsigned/unsigned, signed/signed, signed/unsigned.
2125f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  static QualType maxIntegerType(QualType lhs, QualType rhs);
2135f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
214fb0d49669aa370b4c0993c5cee60275ef9fd6518Steve Naroff  /// compareFloatingType - Handles 3 different combos:
215fb0d49669aa370b4c0993c5cee60275ef9fd6518Steve Naroff  /// float/float, float/complex, complex/complex.
216fb0d49669aa370b4c0993c5cee60275ef9fd6518Steve Naroff  /// If lt > rt, return 1. If lt == rt, return 0. If lt < rt, return -1.
217fb0d49669aa370b4c0993c5cee60275ef9fd6518Steve Naroff  static int compareFloatingType(QualType lt, QualType rt);
2185f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
219716c7304ff5d27a95e1e7823acd1d09d5ec3e37fSteve Naroff  /// getFloatingTypeOfSizeWithinDomain - Returns a real floating
220716c7304ff5d27a95e1e7823acd1d09d5ec3e37fSteve Naroff  /// point or a complex type (based on typeDomain/typeSize).
221716c7304ff5d27a95e1e7823acd1d09d5ec3e37fSteve Naroff  /// 'typeDomain' is a real floating point or complex type.
222716c7304ff5d27a95e1e7823acd1d09d5ec3e37fSteve Naroff  /// 'typeSize' is a real floating point or complex type.
223f1448a0e4a1e868ff873a8530a61a09cb68666ccSteve Naroff  QualType getFloatingTypeOfSizeWithinDomain(QualType typeSize,
224f1448a0e4a1e868ff873a8530a61a09cb68666ccSteve Naroff                                             QualType typeDomain) const;
225ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff
226ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  //===--------------------------------------------------------------------===//
227ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  //                    Type Compatibility Predicates
228ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  //===--------------------------------------------------------------------===//
229ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff
230ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  /// Compatibility predicates used to check assignment expressions.
231ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  bool typesAreCompatible(QualType, QualType); // C99 6.2.7p1
232ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  bool tagTypesAreCompatible(QualType, QualType); // C99 6.2.7p1
233ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  bool pointerTypesAreCompatible(QualType, QualType);  // C99 6.7.5.1p2
234ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  bool referenceTypesAreCompatible(QualType, QualType); // C++ 5.17p6
235ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  bool functionTypesAreCompatible(QualType, QualType); // C99 6.7.5.3p15
236ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  bool arrayTypesAreCompatible(QualType, QualType); // C99 6.7.5.2p6
237ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  bool builtinTypesAreCompatible(QualType, QualType);
238ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff
239ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  /// Objective-C specific type checking.
240ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  bool interfaceTypesAreCompatible(QualType, QualType);
241ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  bool objcTypesAreCompatible(QualType, QualType);
242ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  bool isObjcIdType(QualType T) const {
243ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff    return T->getAsStructureType() == IdStructType;
244ec0550fa3653d46560bf4484a2e988329c228e39Steve Naroff  }
2455f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencerprivate:
2465f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  ASTContext(const ASTContext&); // DO NOT IMPLEMENT
2475f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  void operator=(const ASTContext&); // DO NOT IMPLEMENT
2485f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
2495f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  void InitBuiltinTypes();
2505f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer  void InitBuiltinType(QualType &R, BuiltinType::Kind K);
2515f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer};
2525f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
2535f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer}  // end namespace clang
2545f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer
2555f016e2cb5d11daeb237544de1c5d59f20fe1a6eReid Spencer#endif
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