]> CyberLeo.Net >> Repos - FreeBSD/releng/9.2.git/blob - contrib/llvm/tools/clang/lib/Serialization/ASTCommon.h
- Copy stable/9 to releng/9.2 as part of the 9.2-RELEASE cycle.
[FreeBSD/releng/9.2.git] / 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/AST/ASTContext.h"
18 #include "clang/Serialization/ASTBitCodes.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   if (T == Context.VaListTagTy)
54     return TypeIdx(PREDEF_TYPE_VA_LIST_TAG).asTypeID(FastQuals);
55
56   return IdxForType(T).asTypeID(FastQuals);
57 }
58
59 unsigned ComputeHash(Selector Sel);
60
61 /// \brief Retrieve the "definitive" declaration that provides all of the
62 /// visible entries for the given declaration context, if there is one.
63 ///
64 /// The "definitive" declaration is the only place where we need to look to
65 /// find information about the declarations within the given declaration
66 /// context. For example, C++ and Objective-C classes, C structs/unions, and
67 /// Objective-C protocols, categories, and extensions are all defined in a
68 /// single place in the source code, so they have definitive declarations
69 /// associated with them. C++ namespaces, on the other hand, can have
70 /// multiple definitions.
71 const DeclContext *getDefinitiveDeclContext(const DeclContext *DC);
72
73 /// \brief Determine whether the given declaration kind is redeclarable.
74 bool isRedeclarableDeclKind(unsigned Kind);
75
76 } // namespace serialization
77
78 } // namespace clang
79
80 #endif