| //===- ASTCommon.h - Common stuff for ASTReader/ASTWriter -*- C++ -*-=========// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file defines common functions that both ASTReader and ASTWriter use. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CLANG_LIB_SERIALIZATION_ASTCOMMON_H |
| #define LLVM_CLANG_LIB_SERIALIZATION_ASTCOMMON_H |
| |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/DeclFriend.h" |
| #include "clang/Serialization/ASTBitCodes.h" |
| |
| namespace clang { |
| |
| namespace serialization { |
| |
| enum DeclUpdateKind { |
| UPD_CXX_ADDED_IMPLICIT_MEMBER, |
| UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION, |
| UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, |
| UPD_CXX_ADDED_FUNCTION_DEFINITION, |
| UPD_CXX_ADDED_VAR_DEFINITION, |
| UPD_CXX_POINT_OF_INSTANTIATION, |
| UPD_CXX_INSTANTIATED_CLASS_DEFINITION, |
| UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT, |
| UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER, |
| UPD_CXX_RESOLVED_DTOR_DELETE, |
| UPD_CXX_RESOLVED_EXCEPTION_SPEC, |
| UPD_CXX_DEDUCED_RETURN_TYPE, |
| UPD_DECL_MARKED_USED, |
| UPD_MANGLING_NUMBER, |
| UPD_STATIC_LOCAL_NUMBER, |
| UPD_DECL_MARKED_OPENMP_THREADPRIVATE, |
| UPD_DECL_MARKED_OPENMP_DECLARETARGET, |
| UPD_DECL_EXPORTED, |
| UPD_ADDED_ATTR_TO_RECORD |
| }; |
| |
| TypeIdx TypeIdxFromBuiltin(const BuiltinType *BT); |
| |
| template <typename IdxForTypeTy> |
| TypeID MakeTypeID(ASTContext &Context, QualType T, IdxForTypeTy IdxForType) { |
| if (T.isNull()) |
| return PREDEF_TYPE_NULL_ID; |
| |
| unsigned FastQuals = T.getLocalFastQualifiers(); |
| T.removeLocalFastQualifiers(); |
| |
| if (T.hasLocalNonFastQualifiers()) |
| return IdxForType(T).asTypeID(FastQuals); |
| |
| assert(!T.hasLocalQualifiers()); |
| |
| if (const BuiltinType *BT = dyn_cast<BuiltinType>(T.getTypePtr())) |
| return TypeIdxFromBuiltin(BT).asTypeID(FastQuals); |
| |
| if (T == Context.AutoDeductTy) |
| return TypeIdx(PREDEF_TYPE_AUTO_DEDUCT).asTypeID(FastQuals); |
| if (T == Context.AutoRRefDeductTy) |
| return TypeIdx(PREDEF_TYPE_AUTO_RREF_DEDUCT).asTypeID(FastQuals); |
| |
| return IdxForType(T).asTypeID(FastQuals); |
| } |
| |
| unsigned ComputeHash(Selector Sel); |
| |
| /// \brief Retrieve the "definitive" declaration that provides all of the |
| /// visible entries for the given declaration context, if there is one. |
| /// |
| /// The "definitive" declaration is the only place where we need to look to |
| /// find information about the declarations within the given declaration |
| /// context. For example, C++ and Objective-C classes, C structs/unions, and |
| /// Objective-C protocols, categories, and extensions are all defined in a |
| /// single place in the source code, so they have definitive declarations |
| /// associated with them. C++ namespaces, on the other hand, can have |
| /// multiple definitions. |
| const DeclContext *getDefinitiveDeclContext(const DeclContext *DC); |
| |
| /// \brief Determine whether the given declaration kind is redeclarable. |
| bool isRedeclarableDeclKind(unsigned Kind); |
| |
| /// \brief Determine whether the given declaration needs an anonymous |
| /// declaration number. |
| bool needsAnonymousDeclarationNumber(const NamedDecl *D); |
| |
| /// \brief Visit each declaration within \c DC that needs an anonymous |
| /// declaration number and call \p Visit with the declaration and its number. |
| template<typename Fn> void numberAnonymousDeclsWithin(const DeclContext *DC, |
| Fn Visit) { |
| unsigned Index = 0; |
| for (Decl *LexicalD : DC->decls()) { |
| // For a friend decl, we care about the declaration within it, if any. |
| if (auto *FD = dyn_cast<FriendDecl>(LexicalD)) |
| LexicalD = FD->getFriendDecl(); |
| |
| auto *ND = dyn_cast_or_null<NamedDecl>(LexicalD); |
| if (!ND || !needsAnonymousDeclarationNumber(ND)) |
| continue; |
| |
| Visit(ND, Index++); |
| } |
| } |
| |
| } // namespace serialization |
| |
| } // namespace clang |
| |
| #endif |