1 //===--- Mangle.h - Mangle C++ Names ----------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // Defines the C++ name mangling interface.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_CLANG_AST_MANGLE_H
15 #define LLVM_CLANG_AST_MANGLE_H
17 #include "clang/AST/Type.h"
18 #include "clang/Basic/ABI.h"
19 #include "llvm/ADT/DenseMap.h"
20 #include "llvm/ADT/StringRef.h"
21 #include "llvm/ADT/SmallString.h"
22 #include "llvm/Support/raw_ostream.h"
27 class CXXConstructorDecl;
28 class CXXDestructorDecl;
34 struct ThisAdjustment;
37 /// MangleBuffer - a convenient class for storing a name which is
38 /// either the result of a mangling or is a constant string with
39 /// external memory ownership.
42 void setString(StringRef Ref) {
46 SmallVectorImpl<char> &getBuffer() {
50 StringRef getString() const {
51 if (!String.empty()) return String;
55 operator StringRef() const {
61 llvm::SmallString<256> Buffer;
64 /// MangleContext - Context for tracking state which persists across multiple
65 /// calls to the C++ name mangler.
68 DiagnosticsEngine &Diags;
70 llvm::DenseMap<const BlockDecl*, unsigned> GlobalBlockIds;
71 llvm::DenseMap<const BlockDecl*, unsigned> LocalBlockIds;
74 explicit MangleContext(ASTContext &Context,
75 DiagnosticsEngine &Diags)
76 : Context(Context), Diags(Diags) { }
78 virtual ~MangleContext() { }
80 ASTContext &getASTContext() const { return Context; }
82 DiagnosticsEngine &getDiags() const { return Diags; }
84 virtual void startNewFunction() { LocalBlockIds.clear(); }
86 unsigned getBlockId(const BlockDecl *BD, bool Local) {
87 llvm::DenseMap<const BlockDecl *, unsigned> &BlockIds
88 = Local? LocalBlockIds : GlobalBlockIds;
89 std::pair<llvm::DenseMap<const BlockDecl *, unsigned>::iterator, bool>
90 Result = BlockIds.insert(std::make_pair(BD, BlockIds.size()));
91 return Result.first->second;
94 /// @name Mangler Entry Points
97 virtual bool shouldMangleDeclName(const NamedDecl *D) = 0;
98 virtual void mangleName(const NamedDecl *D, raw_ostream &)=0;
99 virtual void mangleThunk(const CXXMethodDecl *MD,
100 const ThunkInfo &Thunk,
102 virtual void mangleCXXDtorThunk(const CXXDestructorDecl *DD, CXXDtorType Type,
103 const ThisAdjustment &ThisAdjustment,
105 virtual void mangleReferenceTemporary(const VarDecl *D,
107 virtual void mangleCXXVTable(const CXXRecordDecl *RD,
109 virtual void mangleCXXVTT(const CXXRecordDecl *RD,
111 virtual void mangleCXXCtorVTable(const CXXRecordDecl *RD, int64_t Offset,
112 const CXXRecordDecl *Type,
114 virtual void mangleCXXRTTI(QualType T, raw_ostream &) = 0;
115 virtual void mangleCXXRTTIName(QualType T, raw_ostream &) = 0;
116 virtual void mangleCXXCtor(const CXXConstructorDecl *D, CXXCtorType Type,
118 virtual void mangleCXXDtor(const CXXDestructorDecl *D, CXXDtorType Type,
121 void mangleGlobalBlock(const BlockDecl *BD,
123 void mangleCtorBlock(const CXXConstructorDecl *CD, CXXCtorType CT,
124 const BlockDecl *BD, raw_ostream &Out);
125 void mangleDtorBlock(const CXXDestructorDecl *CD, CXXDtorType DT,
126 const BlockDecl *BD, raw_ostream &Out);
127 void mangleBlock(const DeclContext *DC, const BlockDecl *BD,
129 // Do the right thing.
130 void mangleBlock(const BlockDecl *BD, raw_ostream &Out);
132 void mangleObjCMethodName(const ObjCMethodDecl *MD,
135 // This is pretty lame.
136 virtual void mangleItaniumGuardVariable(const VarDecl *D,
138 llvm_unreachable("Target does not support mangling guard variables");
143 MangleContext *createItaniumMangleContext(ASTContext &Context,
144 DiagnosticsEngine &Diags);
145 MangleContext *createMicrosoftMangleContext(ASTContext &Context,
146 DiagnosticsEngine &Diags);