ASTTypeTraits.cpp revision 263508 
1//===--- ASTTypeTraits.cpp --------------------------------------*- 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//  Provides a dynamic type identifier and a dynamically typed node container
11//  that can be used to store an AST base node at runtime in the same storage in
12//  a type safe way.
13//
14//===----------------------------------------------------------------------===//
15
16#include "clang/AST/ASTTypeTraits.h"
17#include "clang/AST/ASTContext.h"
18#include "clang/AST/DeclCXX.h"
19
20namespace clang {
21namespace ast_type_traits {
22
23const ASTNodeKind::KindInfo ASTNodeKind::AllKindInfo[] = {
24  { NKI_None, "<None>" },
25  { NKI_None, "CXXCtorInitializer" },
26  { NKI_None, "TemplateArgument" },
27  { NKI_None, "NestedNameSpecifier" },
28  { NKI_None, "NestedNameSpecifierLoc" },
29  { NKI_None, "QualType" },
30  { NKI_None, "TypeLoc" },
31  { NKI_None, "Decl" },
32#define DECL(DERIVED, BASE) { NKI_##BASE, #DERIVED "Decl" },
33#include "clang/AST/DeclNodes.inc"
34  { NKI_None, "Stmt" },
35#define STMT(DERIVED, BASE) { NKI_##BASE, #DERIVED },
36#include "clang/AST/StmtNodes.inc"
37  { NKI_None, "Type" },
38#define TYPE(DERIVED, BASE) { NKI_##BASE, #DERIVED "Type" },
39#include "clang/AST/TypeNodes.def"
40};
41
42bool ASTNodeKind::isBaseOf(ASTNodeKind Other) const {
43  return isBaseOf(KindId, Other.KindId);
44}
45
46bool ASTNodeKind::isSame(ASTNodeKind Other) const {
47  return KindId != NKI_None && KindId == Other.KindId;
48}
49
50bool ASTNodeKind::isBaseOf(NodeKindId Base, NodeKindId Derived) {
51  if (Base == NKI_None || Derived == NKI_None) return false;
52  while (Derived != Base && Derived != NKI_None)
53    Derived = AllKindInfo[Derived].ParentId;
54  return Derived == Base;
55}
56
57StringRef ASTNodeKind::asStringRef() const { return AllKindInfo[KindId].Name; }
58
59void DynTypedNode::print(llvm::raw_ostream &OS,
60                         const PrintingPolicy &PP) const {
61  if (const TemplateArgument *TA = get<TemplateArgument>())
62    TA->print(PP, OS);
63  else if (const NestedNameSpecifier *NNS = get<NestedNameSpecifier>())
64    NNS->print(OS, PP);
65  else if (const NestedNameSpecifierLoc *NNSL = get<NestedNameSpecifierLoc>())
66    NNSL->getNestedNameSpecifier()->print(OS, PP);
67  else if (const QualType *QT = get<QualType>())
68    QT->print(OS, PP);
69  else if (const TypeLoc *TL = get<TypeLoc>())
70    TL->getType().print(OS, PP);
71  else if (const Decl *D = get<Decl>())
72    D->print(OS, PP);
73  else if (const Stmt *S = get<Stmt>())
74    S->printPretty(OS, 0, PP);
75  else if (const Type *T = get<Type>())
76    QualType(T, 0).print(OS, PP);
77  else
78    OS << "Unable to print values of type " << NodeKind.asStringRef() << "\n";
79}
80
81void DynTypedNode::dump(llvm::raw_ostream &OS, SourceManager &SM) const {
82  if (const Decl *D = get<Decl>())
83    D->dump(OS);
84  else if (const Stmt *S = get<Stmt>())
85    S->dump(OS, SM);
86  else
87    OS << "Unable to dump values of type " << NodeKind.asStringRef() << "\n";
88}
89
90SourceRange DynTypedNode::getSourceRange() const {
91  if (const CXXCtorInitializer *CCI = get<CXXCtorInitializer>())
92    return CCI->getSourceRange();
93  if (const NestedNameSpecifierLoc *NNSL = get<NestedNameSpecifierLoc>())
94    return NNSL->getSourceRange();
95  if (const TypeLoc *TL = get<TypeLoc>())
96    return TL->getSourceRange();
97  if (const Decl *D = get<Decl>())
98    return D->getSourceRange();
99  if (const Stmt *S = get<Stmt>())
100    return S->getSourceRange();
101  return SourceRange();
102}
103
104} // end namespace ast_type_traits
105} // end namespace clang
106