1//===- ASTCommon.h - Common stuff for ASTReader/ASTWriter -*- C++ -*-=========// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file defines common functions that both ASTReader and ASTWriter use. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef LLVM_CLANG_SERIALIZATION_LIB_AST_COMMON_H 15#define LLVM_CLANG_SERIALIZATION_LIB_AST_COMMON_H 16 17#include "clang/AST/ASTContext.h" 18#include "clang/Serialization/ASTBitCodes.h" 19 20namespace clang { 21 22namespace serialization { 23 24enum DeclUpdateKind { 25 UPD_CXX_ADDED_IMPLICIT_MEMBER, 26 UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION, 27 UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, 28 UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER, 29 UPD_CXX_INSTANTIATED_FUNCTION_DEFINITION, 30 UPD_CXX_INSTANTIATED_CLASS_DEFINITION, 31 UPD_CXX_RESOLVED_EXCEPTION_SPEC, 32 UPD_CXX_DEDUCED_RETURN_TYPE, 33 UPD_DECL_MARKED_USED, 34 UPD_MANGLING_NUMBER, 35 UPD_STATIC_LOCAL_NUMBER 36}; 37 38TypeIdx TypeIdxFromBuiltin(const BuiltinType *BT); 39 40template <typename IdxForTypeTy> 41TypeID MakeTypeID(ASTContext &Context, QualType T, IdxForTypeTy IdxForType) { 42 if (T.isNull()) 43 return PREDEF_TYPE_NULL_ID; 44 45 unsigned FastQuals = T.getLocalFastQualifiers(); 46 T.removeLocalFastQualifiers(); 47 48 if (T.hasLocalNonFastQualifiers()) 49 return IdxForType(T).asTypeID(FastQuals); 50 51 assert(!T.hasLocalQualifiers()); 52 53 if (const BuiltinType *BT = dyn_cast<BuiltinType>(T.getTypePtr())) 54 return TypeIdxFromBuiltin(BT).asTypeID(FastQuals); 55 56 if (T == Context.AutoDeductTy) 57 return TypeIdx(PREDEF_TYPE_AUTO_DEDUCT).asTypeID(FastQuals); 58 if (T == Context.AutoRRefDeductTy) 59 return TypeIdx(PREDEF_TYPE_AUTO_RREF_DEDUCT).asTypeID(FastQuals); 60 if (T == Context.VaListTagTy) 61 return TypeIdx(PREDEF_TYPE_VA_LIST_TAG).asTypeID(FastQuals); 62 63 return IdxForType(T).asTypeID(FastQuals); 64} 65 66unsigned ComputeHash(Selector Sel); 67 68/// \brief Retrieve the "definitive" declaration that provides all of the 69/// visible entries for the given declaration context, if there is one. 70/// 71/// The "definitive" declaration is the only place where we need to look to 72/// find information about the declarations within the given declaration 73/// context. For example, C++ and Objective-C classes, C structs/unions, and 74/// Objective-C protocols, categories, and extensions are all defined in a 75/// single place in the source code, so they have definitive declarations 76/// associated with them. C++ namespaces, on the other hand, can have 77/// multiple definitions. 78const DeclContext *getDefinitiveDeclContext(const DeclContext *DC); 79 80/// \brief Determine whether the given declaration kind is redeclarable. 81bool isRedeclarableDeclKind(unsigned Kind); 82 83} // namespace serialization 84 85} // namespace clang 86 87#endif 88