| //===--- ASTTypeTraits.cpp --------------------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Provides a dynamic type identifier and a dynamically typed node container |
| // that can be used to store an AST base node at runtime in the same storage in |
| // a type safe way. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/AST/ASTTypeTraits.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/DeclCXX.h" |
| #include "clang/AST/NestedNameSpecifier.h" |
| |
| namespace clang { |
| namespace ast_type_traits { |
| |
| const ASTNodeKind::KindInfo ASTNodeKind::AllKindInfo[] = { |
| { NKI_None, "<None>" }, |
| { NKI_None, "TemplateArgument" }, |
| { NKI_None, "TemplateName" }, |
| { NKI_None, "NestedNameSpecifierLoc" }, |
| { NKI_None, "QualType" }, |
| { NKI_None, "TypeLoc" }, |
| { NKI_None, "CXXCtorInitializer" }, |
| { NKI_None, "NestedNameSpecifier" }, |
| { NKI_None, "Decl" }, |
| #define DECL(DERIVED, BASE) { NKI_##BASE, #DERIVED "Decl" }, |
| #include "clang/AST/DeclNodes.inc" |
| { NKI_None, "Stmt" }, |
| #define STMT(DERIVED, BASE) { NKI_##BASE, #DERIVED }, |
| #include "clang/AST/StmtNodes.inc" |
| { NKI_None, "Type" }, |
| #define TYPE(DERIVED, BASE) { NKI_##BASE, #DERIVED "Type" }, |
| #include "clang/AST/TypeNodes.inc" |
| { NKI_None, "OMPClause" }, |
| #define OPENMP_CLAUSE(TextualSpelling, Class) {NKI_OMPClause, #Class}, |
| #include "clang/Basic/OpenMPKinds.def" |
| }; |
| |
| bool ASTNodeKind::isBaseOf(ASTNodeKind Other, unsigned *Distance) const { |
| return isBaseOf(KindId, Other.KindId, Distance); |
| } |
| |
| bool ASTNodeKind::isBaseOf(NodeKindId Base, NodeKindId Derived, |
| unsigned *Distance) { |
| if (Base == NKI_None || Derived == NKI_None) return false; |
| unsigned Dist = 0; |
| while (Derived != Base && Derived != NKI_None) { |
| Derived = AllKindInfo[Derived].ParentId; |
| ++Dist; |
| } |
| if (Distance) |
| *Distance = Dist; |
| return Derived == Base; |
| } |
| |
| StringRef ASTNodeKind::asStringRef() const { return AllKindInfo[KindId].Name; } |
| |
| ASTNodeKind ASTNodeKind::getMostDerivedType(ASTNodeKind Kind1, |
| ASTNodeKind Kind2) { |
| if (Kind1.isBaseOf(Kind2)) return Kind2; |
| if (Kind2.isBaseOf(Kind1)) return Kind1; |
| return ASTNodeKind(); |
| } |
| |
| ASTNodeKind ASTNodeKind::getMostDerivedCommonAncestor(ASTNodeKind Kind1, |
| ASTNodeKind Kind2) { |
| NodeKindId Parent = Kind1.KindId; |
| while (!isBaseOf(Parent, Kind2.KindId, nullptr) && Parent != NKI_None) { |
| Parent = AllKindInfo[Parent].ParentId; |
| } |
| return ASTNodeKind(Parent); |
| } |
| |
| ASTNodeKind ASTNodeKind::getFromNode(const Decl &D) { |
| switch (D.getKind()) { |
| #define DECL(DERIVED, BASE) \ |
| case Decl::DERIVED: return ASTNodeKind(NKI_##DERIVED##Decl); |
| #define ABSTRACT_DECL(D) |
| #include "clang/AST/DeclNodes.inc" |
| }; |
| llvm_unreachable("invalid decl kind"); |
| } |
| |
| ASTNodeKind ASTNodeKind::getFromNode(const Stmt &S) { |
| switch (S.getStmtClass()) { |
| case Stmt::NoStmtClass: return NKI_None; |
| #define STMT(CLASS, PARENT) \ |
| case Stmt::CLASS##Class: return ASTNodeKind(NKI_##CLASS); |
| #define ABSTRACT_STMT(S) |
| #include "clang/AST/StmtNodes.inc" |
| } |
| llvm_unreachable("invalid stmt kind"); |
| } |
| |
| ASTNodeKind ASTNodeKind::getFromNode(const Type &T) { |
| switch (T.getTypeClass()) { |
| #define TYPE(Class, Base) \ |
| case Type::Class: return ASTNodeKind(NKI_##Class##Type); |
| #define ABSTRACT_TYPE(Class, Base) |
| #include "clang/AST/TypeNodes.inc" |
| } |
| llvm_unreachable("invalid type kind"); |
| } |
| |
| ASTNodeKind ASTNodeKind::getFromNode(const OMPClause &C) { |
| switch (C.getClauseKind()) { |
| #define OPENMP_CLAUSE(Name, Class) \ |
| case OMPC_##Name: return ASTNodeKind(NKI_##Class); |
| #include "clang/Basic/OpenMPKinds.def" |
| case OMPC_threadprivate: |
| case OMPC_uniform: |
| case OMPC_device_type: |
| case OMPC_match: |
| case OMPC_unknown: |
| llvm_unreachable("unexpected OpenMP clause kind"); |
| } |
| llvm_unreachable("invalid stmt kind"); |
| } |
| |
| void DynTypedNode::print(llvm::raw_ostream &OS, |
| const PrintingPolicy &PP) const { |
| if (const TemplateArgument *TA = get<TemplateArgument>()) |
| TA->print(PP, OS); |
| else if (const TemplateName *TN = get<TemplateName>()) |
| TN->print(OS, PP); |
| else if (const NestedNameSpecifier *NNS = get<NestedNameSpecifier>()) |
| NNS->print(OS, PP); |
| else if (const NestedNameSpecifierLoc *NNSL = get<NestedNameSpecifierLoc>()) { |
| if (const NestedNameSpecifier *NNS = NNSL->getNestedNameSpecifier()) |
| NNS->print(OS, PP); |
| else |
| OS << "(empty NestedNameSpecifierLoc)"; |
| } else if (const QualType *QT = get<QualType>()) |
| QT->print(OS, PP); |
| else if (const TypeLoc *TL = get<TypeLoc>()) |
| TL->getType().print(OS, PP); |
| else if (const Decl *D = get<Decl>()) |
| D->print(OS, PP); |
| else if (const Stmt *S = get<Stmt>()) |
| S->printPretty(OS, nullptr, PP); |
| else if (const Type *T = get<Type>()) |
| QualType(T, 0).print(OS, PP); |
| else |
| OS << "Unable to print values of type " << NodeKind.asStringRef() << "\n"; |
| } |
| |
| void DynTypedNode::dump(llvm::raw_ostream &OS, SourceManager &SM) const { |
| if (const Decl *D = get<Decl>()) |
| D->dump(OS); |
| else if (const Stmt *S = get<Stmt>()) |
| S->dump(OS, SM); |
| else if (const Type *T = get<Type>()) |
| T->dump(OS); |
| else |
| OS << "Unable to dump values of type " << NodeKind.asStringRef() << "\n"; |
| } |
| |
| SourceRange DynTypedNode::getSourceRange() const { |
| if (const CXXCtorInitializer *CCI = get<CXXCtorInitializer>()) |
| return CCI->getSourceRange(); |
| if (const NestedNameSpecifierLoc *NNSL = get<NestedNameSpecifierLoc>()) |
| return NNSL->getSourceRange(); |
| if (const TypeLoc *TL = get<TypeLoc>()) |
| return TL->getSourceRange(); |
| if (const Decl *D = get<Decl>()) |
| return D->getSourceRange(); |
| if (const Stmt *S = get<Stmt>()) |
| return S->getSourceRange(); |
| if (const auto *C = get<OMPClause>()) |
| return SourceRange(C->getBeginLoc(), C->getEndLoc()); |
| return SourceRange(); |
| } |
| |
| } // end namespace ast_type_traits |
| } // end namespace clang |