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 42 bool ASTNodeKind::isBaseOf(ASTNodeKind Other, unsigned *Distance) const { 43 return isBaseOf(KindId, Other.KindId, Distance); 44 } 45 46 bool ASTNodeKind::isSame(ASTNodeKind Other) const { 47 return KindId != NKI_None && KindId == Other.KindId; 48 } 49 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 63 StringRef ASTNodeKind::asStringRef() const { return AllKindInfo[KindId].Name; } 64 65 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 87 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 96 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
