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
20 namespace clang {
21 namespace ast_type_traits {
22
23 const 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
isBaseOf(ASTNodeKind Other,unsigned * Distance) const42 bool ASTNodeKind::isBaseOf(ASTNodeKind Other, unsigned *Distance) const {
43 return isBaseOf(KindId, Other.KindId, Distance);
44 }
45
isSame(ASTNodeKind Other) const46 bool ASTNodeKind::isSame(ASTNodeKind Other) const {
47 return KindId != NKI_None && KindId == Other.KindId;
48 }
49
isBaseOf(NodeKindId Base,NodeKindId Derived,unsigned * Distance)50 bool ASTNodeKind::isBaseOf(NodeKindId Base, NodeKindId Derived,
51 unsigned *Distance) {
52 if (Base == NKI_None || Derived == NKI_None) return false;
53 unsigned Dist = 0;
54 while (Derived != Base && Derived != NKI_None) {
55 Derived = AllKindInfo[Derived].ParentId;
56 ++Dist;
57 }
58 if (Distance)
59 *Distance = Dist;
60 return Derived == Base;
61 }
62
asStringRef() const63 StringRef ASTNodeKind::asStringRef() const { return AllKindInfo[KindId].Name; }
64
print(llvm::raw_ostream & OS,const PrintingPolicy & PP) const65 void DynTypedNode::print(llvm::raw_ostream &OS,
66 const PrintingPolicy &PP) const {
67 if (const TemplateArgument *TA = get<TemplateArgument>())
68 TA->print(PP, OS);
69 else if (const NestedNameSpecifier *NNS = get<NestedNameSpecifier>())
70 NNS->print(OS, PP);
71 else if (const NestedNameSpecifierLoc *NNSL = get<NestedNameSpecifierLoc>())
72 NNSL->getNestedNameSpecifier()->print(OS, PP);
73 else if (const QualType *QT = get<QualType>())
74 QT->print(OS, PP);
75 else if (const TypeLoc *TL = get<TypeLoc>())
76 TL->getType().print(OS, PP);
77 else if (const Decl *D = get<Decl>())
78 D->print(OS, PP);
79 else if (const Stmt *S = get<Stmt>())
80 S->printPretty(OS, nullptr, PP);
81 else if (const Type *T = get<Type>())
82 QualType(T, 0).print(OS, PP);
83 else
84 OS << "Unable to print values of type " << NodeKind.asStringRef() << "\n";
85 }
86
dump(llvm::raw_ostream & OS,SourceManager & SM) const87 void DynTypedNode::dump(llvm::raw_ostream &OS, SourceManager &SM) const {
88 if (const Decl *D = get<Decl>())
89 D->dump(OS);
90 else if (const Stmt *S = get<Stmt>())
91 S->dump(OS, SM);
92 else
93 OS << "Unable to dump values of type " << NodeKind.asStringRef() << "\n";
94 }
95
getSourceRange() const96 SourceRange DynTypedNode::getSourceRange() const {
97 if (const CXXCtorInitializer *CCI = get<CXXCtorInitializer>())
98 return CCI->getSourceRange();
99 if (const NestedNameSpecifierLoc *NNSL = get<NestedNameSpecifierLoc>())
100 return NNSL->getSourceRange();
101 if (const TypeLoc *TL = get<TypeLoc>())
102 return TL->getSourceRange();
103 if (const Decl *D = get<Decl>())
104 return D->getSourceRange();
105 if (const Stmt *S = get<Stmt>())
106 return S->getSourceRange();
107 return SourceRange();
108 }
109
110 } // end namespace ast_type_traits
111 } // end namespace clang
112