contrib/llvm/tools/clang/lib/Serialization/ASTCommon.h

   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/Serialization/ASTBitCodes.h"
  18 #include "clang/AST/ASTContext.h"
  19
  20 namespace clang {
  21
  22 namespace serialization {
  23
  24 enum 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 };
  30
  31 TypeIdx TypeIdxFromBuiltin(const BuiltinType *BT);
  32
  33 template <typename IdxForTypeTy>
  34 TypeID MakeTypeID(ASTContext &Context, QualType T, IdxForTypeTy IdxForType) {
  35   if (T.isNull())
  36     return PREDEF_TYPE_NULL_ID;
  37
  38   unsigned FastQuals = T.getLocalFastQualifiers();
  39   T.removeLocalFastQualifiers();
  40
  41   if (T.hasLocalNonFastQualifiers())
  42     return IdxForType(T).asTypeID(FastQuals);
  43
  44   assert(!T.hasLocalQualifiers());
  45
  46   if (const BuiltinType *BT = dyn_cast<BuiltinType>(T.getTypePtr()))
  47     return TypeIdxFromBuiltin(BT).asTypeID(FastQuals);
  48
  49   if (T == Context.AutoDeductTy)
  50     return TypeIdx(PREDEF_TYPE_AUTO_DEDUCT).asTypeID(FastQuals);
  51   if (T == Context.AutoRRefDeductTy)
  52     return TypeIdx(PREDEF_TYPE_AUTO_RREF_DEDUCT).asTypeID(FastQuals);
  53
  54   return IdxForType(T).asTypeID(FastQuals);
  55 }
  56
  57 unsigned ComputeHash(Selector Sel);
  58
  59 } // namespace serialization
  60
  61 } // namespace clang
  62
  63 #endif