1 //===--- ASTTypeTraits.cpp --------------------------------------*- C++ -*-===// 2 // 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 6 // 7 //===----------------------------------------------------------------------===// 8 // 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 11 // a type safe way. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #include "clang/AST/ASTTypeTraits.h" 16 #include "clang/AST/ASTContext.h" 17 #include "clang/AST/DeclCXX.h" 18 #include "clang/AST/NestedNameSpecifier.h" 19 #include "clang/AST/OpenMPClause.h" 20 21 using namespace clang; 22 23 const ASTNodeKind::KindInfo ASTNodeKind::AllKindInfo[] = { 24 {NKI_None, "<None>"}, 25 {NKI_None, "TemplateArgument"}, 26 {NKI_None, "TemplateArgumentLoc"}, 27 {NKI_None, "TemplateName"}, 28 {NKI_None, "NestedNameSpecifierLoc"}, 29 {NKI_None, "QualType"}, 30 {NKI_None, "TypeLoc"}, 31 {NKI_None, "CXXBaseSpecifier"}, 32 {NKI_None, "CXXCtorInitializer"}, 33 {NKI_None, "NestedNameSpecifier"}, 34 {NKI_None, "Decl"}, 35 #define DECL(DERIVED, BASE) { NKI_##BASE, #DERIVED "Decl" }, 36 #include "clang/AST/DeclNodes.inc" 37 {NKI_None, "Stmt"}, 38 #define STMT(DERIVED, BASE) { NKI_##BASE, #DERIVED }, 39 #include "clang/AST/StmtNodes.inc" 40 {NKI_None, "Type"}, 41 #define TYPE(DERIVED, BASE) { NKI_##BASE, #DERIVED "Type" }, 42 #include "clang/AST/TypeNodes.inc" 43 {NKI_None, "OMPClause"}, 44 #define GEN_CLANG_CLAUSE_CLASS 45 #define CLAUSE_CLASS(Enum, Str, Class) {NKI_OMPClause, #Class}, 46 #include "llvm/Frontend/OpenMP/OMP.inc" 47 }; 48 49 bool ASTNodeKind::isBaseOf(ASTNodeKind Other, unsigned *Distance) const { 50 return isBaseOf(KindId, Other.KindId, Distance); 51 } 52 53 bool ASTNodeKind::isBaseOf(NodeKindId Base, NodeKindId Derived, 54 unsigned *Distance) { 55 if (Base == NKI_None || Derived == NKI_None) return false; 56 unsigned Dist = 0; 57 while (Derived != Base && Derived != NKI_None) { 58 Derived = AllKindInfo[Derived].ParentId; 59 ++Dist; 60 } 61 if (Distance) 62 *Distance = Dist; 63 return Derived == Base; 64 } 65 66 ASTNodeKind ASTNodeKind::getCladeKind() const { 67 NodeKindId LastId = KindId; 68 while (LastId) { 69 NodeKindId ParentId = AllKindInfo[LastId].ParentId; 70 if (ParentId == NKI_None) 71 return LastId; 72 LastId = ParentId; 73 } 74 return NKI_None; 75 } 76 77 StringRef ASTNodeKind::asStringRef() const { return AllKindInfo[KindId].Name; } 78 79 ASTNodeKind ASTNodeKind::getMostDerivedType(ASTNodeKind Kind1, 80 ASTNodeKind Kind2) { 81 if (Kind1.isBaseOf(Kind2)) return Kind2; 82 if (Kind2.isBaseOf(Kind1)) return Kind1; 83 return ASTNodeKind(); 84 } 85 86 ASTNodeKind ASTNodeKind::getMostDerivedCommonAncestor(ASTNodeKind Kind1, 87 ASTNodeKind Kind2) { 88 NodeKindId Parent = Kind1.KindId; 89 while (!isBaseOf(Parent, Kind2.KindId, nullptr) && Parent != NKI_None) { 90 Parent = AllKindInfo[Parent].ParentId; 91 } 92 return ASTNodeKind(Parent); 93 } 94 95 ASTNodeKind ASTNodeKind::getFromNode(const Decl &D) { 96 switch (D.getKind()) { 97 #define DECL(DERIVED, BASE) \ 98 case Decl::DERIVED: return ASTNodeKind(NKI_##DERIVED##Decl); 99 #define ABSTRACT_DECL(D) 100 #include "clang/AST/DeclNodes.inc" 101 }; 102 llvm_unreachable("invalid decl kind"); 103 } 104 105 ASTNodeKind ASTNodeKind::getFromNode(const Stmt &S) { 106 switch (S.getStmtClass()) { 107 case Stmt::NoStmtClass: return NKI_None; 108 #define STMT(CLASS, PARENT) \ 109 case Stmt::CLASS##Class: return ASTNodeKind(NKI_##CLASS); 110 #define ABSTRACT_STMT(S) 111 #include "clang/AST/StmtNodes.inc" 112 } 113 llvm_unreachable("invalid stmt kind"); 114 } 115 116 ASTNodeKind ASTNodeKind::getFromNode(const Type &T) { 117 switch (T.getTypeClass()) { 118 #define TYPE(Class, Base) \ 119 case Type::Class: return ASTNodeKind(NKI_##Class##Type); 120 #define ABSTRACT_TYPE(Class, Base) 121 #include "clang/AST/TypeNodes.inc" 122 } 123 llvm_unreachable("invalid type kind"); 124 } 125 126 ASTNodeKind ASTNodeKind::getFromNode(const OMPClause &C) { 127 switch (C.getClauseKind()) { 128 #define GEN_CLANG_CLAUSE_CLASS 129 #define CLAUSE_CLASS(Enum, Str, Class) \ 130 case llvm::omp::Clause::Enum: \ 131 return ASTNodeKind(NKI_##Class); 132 #define CLAUSE_NO_CLASS(Enum, Str) \ 133 case llvm::omp::Clause::Enum: \ 134 llvm_unreachable("unexpected OpenMP clause kind"); 135 #include "llvm/Frontend/OpenMP/OMP.inc" 136 } 137 llvm_unreachable("invalid stmt kind"); 138 } 139 140 void DynTypedNode::print(llvm::raw_ostream &OS, 141 const PrintingPolicy &PP) const { 142 if (const TemplateArgument *TA = get<TemplateArgument>()) 143 TA->print(PP, OS, /*IncludeType*/ true); 144 else if (const TemplateArgumentLoc *TAL = get<TemplateArgumentLoc>()) 145 TAL->getArgument().print(PP, OS, /*IncludeType*/ true); 146 else if (const TemplateName *TN = get<TemplateName>()) 147 TN->print(OS, PP); 148 else if (const NestedNameSpecifier *NNS = get<NestedNameSpecifier>()) 149 NNS->print(OS, PP); 150 else if (const NestedNameSpecifierLoc *NNSL = get<NestedNameSpecifierLoc>()) { 151 if (const NestedNameSpecifier *NNS = NNSL->getNestedNameSpecifier()) 152 NNS->print(OS, PP); 153 else 154 OS << "(empty NestedNameSpecifierLoc)"; 155 } else if (const QualType *QT = get<QualType>()) 156 QT->print(OS, PP); 157 else if (const TypeLoc *TL = get<TypeLoc>()) 158 TL->getType().print(OS, PP); 159 else if (const Decl *D = get<Decl>()) 160 D->print(OS, PP); 161 else if (const Stmt *S = get<Stmt>()) 162 S->printPretty(OS, nullptr, PP); 163 else if (const Type *T = get<Type>()) 164 QualType(T, 0).print(OS, PP); 165 else 166 OS << "Unable to print values of type " << NodeKind.asStringRef() << "\n"; 167 } 168 169 void DynTypedNode::dump(llvm::raw_ostream &OS, 170 const ASTContext &Context) const { 171 if (const Decl *D = get<Decl>()) 172 D->dump(OS); 173 else if (const Stmt *S = get<Stmt>()) 174 S->dump(OS, Context); 175 else if (const Type *T = get<Type>()) 176 T->dump(OS, Context); 177 else 178 OS << "Unable to dump values of type " << NodeKind.asStringRef() << "\n"; 179 } 180 181 SourceRange DynTypedNode::getSourceRange() const { 182 if (const CXXCtorInitializer *CCI = get<CXXCtorInitializer>()) 183 return CCI->getSourceRange(); 184 if (const NestedNameSpecifierLoc *NNSL = get<NestedNameSpecifierLoc>()) 185 return NNSL->getSourceRange(); 186 if (const TypeLoc *TL = get<TypeLoc>()) 187 return TL->getSourceRange(); 188 if (const Decl *D = get<Decl>()) 189 return D->getSourceRange(); 190 if (const Stmt *S = get<Stmt>()) 191 return S->getSourceRange(); 192 if (const TemplateArgumentLoc *TAL = get<TemplateArgumentLoc>()) 193 return TAL->getSourceRange(); 194 if (const auto *C = get<OMPClause>()) 195 return SourceRange(C->getBeginLoc(), C->getEndLoc()); 196 if (const auto *CBS = get<CXXBaseSpecifier>()) 197 return CBS->getSourceRange(); 198 return SourceRange(); 199 } 200
Indexes created Tue Feb 24 08:35:24 UTC 2026