1 //===-- ClangExternalASTSourceCallbacks.cpp -------------------------------===// 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 #include "Plugins/ExpressionParser/Clang/ClangExternalASTSourceCallbacks.h" 10 #include "Plugins/TypeSystem/Clang/TypeSystemClang.h" 11 12 #include "clang/AST/Decl.h" 13 #include "clang/AST/DeclObjC.h" 14 15 using namespace lldb_private; 16 17 char ClangExternalASTSourceCallbacks::ID; 18 19 void ClangExternalASTSourceCallbacks::CompleteType(clang::TagDecl *tag_decl) { 20 m_ast.CompleteTagDecl(tag_decl); 21 } 22 23 void ClangExternalASTSourceCallbacks::CompleteType( 24 clang::ObjCInterfaceDecl *objc_decl) { 25 m_ast.CompleteObjCInterfaceDecl(objc_decl); 26 } 27 28 bool ClangExternalASTSourceCallbacks::layoutRecordType( 29 const clang::RecordDecl *Record, uint64_t &Size, uint64_t &Alignment, 30 llvm::DenseMap<const clang::FieldDecl *, uint64_t> &FieldOffsets, 31 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &BaseOffsets, 32 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> 33 &VirtualBaseOffsets) { 34 return m_ast.LayoutRecordType(Record, Size, Alignment, FieldOffsets, 35 BaseOffsets, VirtualBaseOffsets); 36 } 37 38 void ClangExternalASTSourceCallbacks::FindExternalLexicalDecls( 39 const clang::DeclContext *decl_ctx, 40 llvm::function_ref<bool(clang::Decl::Kind)> IsKindWeWant, 41 llvm::SmallVectorImpl<clang::Decl *> &decls) { 42 if (decl_ctx) { 43 clang::TagDecl *tag_decl = llvm::dyn_cast<clang::TagDecl>( 44 const_cast<clang::DeclContext *>(decl_ctx)); 45 if (tag_decl) 46 CompleteType(tag_decl); 47 } 48 } 49 50 bool ClangExternalASTSourceCallbacks::FindExternalVisibleDeclsByName( 51 const clang::DeclContext *DC, clang::DeclarationName Name) { 52 llvm::SmallVector<clang::NamedDecl *, 4> decls; 53 // Objective-C methods are not added into the LookupPtr when they originate 54 // from an external source. SetExternalVisibleDeclsForName() adds them. 55 if (auto *oid = llvm::dyn_cast<clang::ObjCInterfaceDecl>(DC)) { 56 clang::ObjCContainerDecl::method_range noload_methods(oid->noload_decls()); 57 for (auto *omd : noload_methods) 58 if (omd->getDeclName() == Name) 59 decls.push_back(omd); 60 } 61 return !SetExternalVisibleDeclsForName(DC, Name, decls).empty(); 62 } 63 64 OptionalClangModuleID 65 ClangExternalASTSourceCallbacks::RegisterModule(clang::Module *module) { 66 m_modules.push_back(module); 67 unsigned id = m_modules.size(); 68 m_ids.insert({module, id}); 69 return OptionalClangModuleID(id); 70 } 71 72 llvm::Optional<clang::ASTSourceDescriptor> 73 ClangExternalASTSourceCallbacks::getSourceDescriptor(unsigned id) { 74 if (clang::Module *module = getModule(id)) 75 return {*module}; 76 return {}; 77 } 78 79 clang::Module *ClangExternalASTSourceCallbacks::getModule(unsigned id) { 80 if (id && id <= m_modules.size()) 81 return m_modules[id - 1]; 82 return nullptr; 83 } 84 85 OptionalClangModuleID 86 ClangExternalASTSourceCallbacks::GetIDForModule(clang::Module *module) { 87 return OptionalClangModuleID(m_ids[module]); 88 } 89