1 //===--- ASTTypeTraits.cpp --------------------------------------*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // Provides a dynamic type identifier and a dynamically typed node container
10 // that can be used to store an AST base node at runtime in the same storage in
13 //===----------------------------------------------------------------------===//
15 #include "clang/AST/ASTTypeTraits.h"
16 #include "clang/AST/ASTContext.h"
17 #include "clang/AST/DeclCXX.h"
20 namespace ast_type_traits {
22 const ASTNodeKind::KindInfo ASTNodeKind::AllKindInfo[] = {
23 { NKI_None, "<None>" },
24 { NKI_None, "TemplateArgument" },
25 { NKI_None, "TemplateName" },
26 { NKI_None, "NestedNameSpecifierLoc" },
27 { NKI_None, "QualType" },
28 { NKI_None, "TypeLoc" },
29 { NKI_None, "CXXCtorInitializer" },
30 { NKI_None, "NestedNameSpecifier" },
32 #define DECL(DERIVED, BASE) { NKI_##BASE, #DERIVED "Decl" },
33 #include "clang/AST/DeclNodes.inc"
35 #define STMT(DERIVED, BASE) { NKI_##BASE, #DERIVED },
36 #include "clang/AST/StmtNodes.inc"
38 #define TYPE(DERIVED, BASE) { NKI_##BASE, #DERIVED "Type" },
39 #include "clang/AST/TypeNodes.def"
40 { NKI_None, "OMPClause" },
41 #define OPENMP_CLAUSE(TextualSpelling, Class) {NKI_OMPClause, #Class},
42 #include "clang/Basic/OpenMPKinds.def"
45 bool ASTNodeKind::isBaseOf(ASTNodeKind Other, unsigned *Distance) const {
46 return isBaseOf(KindId, Other.KindId, Distance);
49 bool ASTNodeKind::isBaseOf(NodeKindId Base, NodeKindId Derived,
51 if (Base == NKI_None || Derived == NKI_None) return false;
53 while (Derived != Base && Derived != NKI_None) {
54 Derived = AllKindInfo[Derived].ParentId;
59 return Derived == Base;
62 StringRef ASTNodeKind::asStringRef() const { return AllKindInfo[KindId].Name; }
64 ASTNodeKind ASTNodeKind::getMostDerivedType(ASTNodeKind Kind1,
66 if (Kind1.isBaseOf(Kind2)) return Kind2;
67 if (Kind2.isBaseOf(Kind1)) return Kind1;
71 ASTNodeKind ASTNodeKind::getMostDerivedCommonAncestor(ASTNodeKind Kind1,
73 NodeKindId Parent = Kind1.KindId;
74 while (!isBaseOf(Parent, Kind2.KindId, nullptr) && Parent != NKI_None) {
75 Parent = AllKindInfo[Parent].ParentId;
77 return ASTNodeKind(Parent);
80 ASTNodeKind ASTNodeKind::getFromNode(const Decl &D) {
81 switch (D.getKind()) {
82 #define DECL(DERIVED, BASE) \
83 case Decl::DERIVED: return ASTNodeKind(NKI_##DERIVED##Decl);
84 #define ABSTRACT_DECL(D)
85 #include "clang/AST/DeclNodes.inc"
87 llvm_unreachable("invalid decl kind");
90 ASTNodeKind ASTNodeKind::getFromNode(const Stmt &S) {
91 switch (S.getStmtClass()) {
92 case Stmt::NoStmtClass: return NKI_None;
93 #define STMT(CLASS, PARENT) \
94 case Stmt::CLASS##Class: return ASTNodeKind(NKI_##CLASS);
95 #define ABSTRACT_STMT(S)
96 #include "clang/AST/StmtNodes.inc"
98 llvm_unreachable("invalid stmt kind");
101 ASTNodeKind ASTNodeKind::getFromNode(const Type &T) {
102 switch (T.getTypeClass()) {
103 #define TYPE(Class, Base) \
104 case Type::Class: return ASTNodeKind(NKI_##Class##Type);
105 #define ABSTRACT_TYPE(Class, Base)
106 #include "clang/AST/TypeNodes.def"
108 llvm_unreachable("invalid type kind");
111 ASTNodeKind ASTNodeKind::getFromNode(const OMPClause &C) {
112 switch (C.getClauseKind()) {
113 #define OPENMP_CLAUSE(Name, Class) \
114 case OMPC_##Name: return ASTNodeKind(NKI_##Class);
115 #include "clang/Basic/OpenMPKinds.def"
116 case OMPC_threadprivate:
119 llvm_unreachable("unexpected OpenMP clause kind");
121 llvm_unreachable("invalid stmt kind");
124 void DynTypedNode::print(llvm::raw_ostream &OS,
125 const PrintingPolicy &PP) const {
126 if (const TemplateArgument *TA = get<TemplateArgument>())
128 else if (const TemplateName *TN = get<TemplateName>())
130 else if (const NestedNameSpecifier *NNS = get<NestedNameSpecifier>())
132 else if (const NestedNameSpecifierLoc *NNSL = get<NestedNameSpecifierLoc>())
133 NNSL->getNestedNameSpecifier()->print(OS, PP);
134 else if (const QualType *QT = get<QualType>())
136 else if (const TypeLoc *TL = get<TypeLoc>())
137 TL->getType().print(OS, PP);
138 else if (const Decl *D = get<Decl>())
140 else if (const Stmt *S = get<Stmt>())
141 S->printPretty(OS, nullptr, PP);
142 else if (const Type *T = get<Type>())
143 QualType(T, 0).print(OS, PP);
145 OS << "Unable to print values of type " << NodeKind.asStringRef() << "\n";
148 void DynTypedNode::dump(llvm::raw_ostream &OS, SourceManager &SM) const {
149 if (const Decl *D = get<Decl>())
151 else if (const Stmt *S = get<Stmt>())
153 else if (const Type *T = get<Type>())
156 OS << "Unable to dump values of type " << NodeKind.asStringRef() << "\n";
159 SourceRange DynTypedNode::getSourceRange() const {
160 if (const CXXCtorInitializer *CCI = get<CXXCtorInitializer>())
161 return CCI->getSourceRange();
162 if (const NestedNameSpecifierLoc *NNSL = get<NestedNameSpecifierLoc>())
163 return NNSL->getSourceRange();
164 if (const TypeLoc *TL = get<TypeLoc>())
165 return TL->getSourceRange();
166 if (const Decl *D = get<Decl>())
167 return D->getSourceRange();
168 if (const Stmt *S = get<Stmt>())
169 return S->getSourceRange();
170 if (const auto *C = get<OMPClause>())
171 return SourceRange(C->getBeginLoc(), C->getEndLoc());
172 return SourceRange();
175 } // end namespace ast_type_traits
176 } // end namespace clang