92 lines · cpp
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-exception6//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 "clang/Basic/Module.h"15#include <optional>16 17using namespace lldb_private;18 19char ClangExternalASTSourceCallbacks::ID;20 21void ClangExternalASTSourceCallbacks::CompleteType(clang::TagDecl *tag_decl) {22 m_ast.CompleteTagDecl(tag_decl);23}24 25void ClangExternalASTSourceCallbacks::CompleteType(26 clang::ObjCInterfaceDecl *objc_decl) {27 m_ast.CompleteObjCInterfaceDecl(objc_decl);28}29 30bool ClangExternalASTSourceCallbacks::layoutRecordType(31 const clang::RecordDecl *Record, uint64_t &Size, uint64_t &Alignment,32 llvm::DenseMap<const clang::FieldDecl *, uint64_t> &FieldOffsets,33 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &BaseOffsets,34 llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits>35 &VirtualBaseOffsets) {36 return m_ast.LayoutRecordType(Record, Size, Alignment, FieldOffsets,37 BaseOffsets, VirtualBaseOffsets);38}39 40void ClangExternalASTSourceCallbacks::FindExternalLexicalDecls(41 const clang::DeclContext *decl_ctx,42 llvm::function_ref<bool(clang::Decl::Kind)> IsKindWeWant,43 llvm::SmallVectorImpl<clang::Decl *> &decls) {44 if (decl_ctx) {45 clang::TagDecl *tag_decl = llvm::dyn_cast<clang::TagDecl>(46 const_cast<clang::DeclContext *>(decl_ctx));47 if (tag_decl)48 CompleteType(tag_decl);49 }50}51 52bool ClangExternalASTSourceCallbacks::FindExternalVisibleDeclsByName(53 const clang::DeclContext *DC, clang::DeclarationName Name,54 const clang::DeclContext *OriginalDC) {55 llvm::SmallVector<clang::NamedDecl *, 4> decls;56 // Objective-C methods are not added into the LookupPtr when they originate57 // from an external source. SetExternalVisibleDeclsForName() adds them.58 if (auto *oid = llvm::dyn_cast<clang::ObjCInterfaceDecl>(DC)) {59 clang::ObjCContainerDecl::method_range noload_methods(oid->noload_decls());60 for (auto *omd : noload_methods)61 if (omd->getDeclName() == Name)62 decls.push_back(omd);63 }64 return !SetExternalVisibleDeclsForName(DC, Name, decls).empty();65}66 67OptionalClangModuleID68ClangExternalASTSourceCallbacks::RegisterModule(clang::Module *module) {69 m_modules.push_back(module);70 unsigned id = m_modules.size();71 m_ids.insert({module, id});72 return OptionalClangModuleID(id);73}74 75std::optional<clang::ASTSourceDescriptor>76ClangExternalASTSourceCallbacks::getSourceDescriptor(unsigned id) {77 if (clang::Module *module = getModule(id))78 return {*module};79 return {};80}81 82clang::Module *ClangExternalASTSourceCallbacks::getModule(unsigned id) {83 if (id && id <= m_modules.size())84 return m_modules[id - 1];85 return nullptr;86}87 88OptionalClangModuleID89ClangExternalASTSourceCallbacks::GetIDForModule(clang::Module *module) {90 return OptionalClangModuleID(m_ids[module]);91}92