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#include <optional> 15 16using namespace lldb_private; 17 18char ClangExternalASTSourceCallbacks::ID; 19 20void ClangExternalASTSourceCallbacks::CompleteType(clang::TagDecl *tag_decl) { 21 m_ast.CompleteTagDecl(tag_decl); 22} 23 24void ClangExternalASTSourceCallbacks::CompleteType( 25 clang::ObjCInterfaceDecl *objc_decl) { 26 m_ast.CompleteObjCInterfaceDecl(objc_decl); 27} 28 29bool ClangExternalASTSourceCallbacks::layoutRecordType( 30 const clang::RecordDecl *Record, uint64_t &Size, uint64_t &Alignment, 31 llvm::DenseMap<const clang::FieldDecl *, uint64_t> &FieldOffsets, 32 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &BaseOffsets, 33 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> 34 &VirtualBaseOffsets) { 35 return m_ast.LayoutRecordType(Record, Size, Alignment, FieldOffsets, 36 BaseOffsets, VirtualBaseOffsets); 37} 38 39void ClangExternalASTSourceCallbacks::FindExternalLexicalDecls( 40 const clang::DeclContext *decl_ctx, 41 llvm::function_ref<bool(clang::Decl::Kind)> IsKindWeWant, 42 llvm::SmallVectorImpl<clang::Decl *> &decls) { 43 if (decl_ctx) { 44 clang::TagDecl *tag_decl = llvm::dyn_cast<clang::TagDecl>( 45 const_cast<clang::DeclContext *>(decl_ctx)); 46 if (tag_decl) 47 CompleteType(tag_decl); 48 } 49} 50 51bool ClangExternalASTSourceCallbacks::FindExternalVisibleDeclsByName( 52 const clang::DeclContext *DC, clang::DeclarationName Name) { 53 llvm::SmallVector<clang::NamedDecl *, 4> decls; 54 // Objective-C methods are not added into the LookupPtr when they originate 55 // from an external source. SetExternalVisibleDeclsForName() adds them. 56 if (auto *oid = llvm::dyn_cast<clang::ObjCInterfaceDecl>(DC)) { 57 clang::ObjCContainerDecl::method_range noload_methods(oid->noload_decls()); 58 for (auto *omd : noload_methods) 59 if (omd->getDeclName() == Name) 60 decls.push_back(omd); 61 } 62 return !SetExternalVisibleDeclsForName(DC, Name, decls).empty(); 63} 64 65OptionalClangModuleID 66ClangExternalASTSourceCallbacks::RegisterModule(clang::Module *module) { 67 m_modules.push_back(module); 68 unsigned id = m_modules.size(); 69 m_ids.insert({module, id}); 70 return OptionalClangModuleID(id); 71} 72 73std::optional<clang::ASTSourceDescriptor> 74ClangExternalASTSourceCallbacks::getSourceDescriptor(unsigned id) { 75 if (clang::Module *module = getModule(id)) 76 return {*module}; 77 return {}; 78} 79 80clang::Module *ClangExternalASTSourceCallbacks::getModule(unsigned id) { 81 if (id && id <= m_modules.size()) 82 return m_modules[id - 1]; 83 return nullptr; 84} 85 86OptionalClangModuleID 87ClangExternalASTSourceCallbacks::GetIDForModule(clang::Module *module) { 88 return OptionalClangModuleID(m_ids[module]); 89} 90