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//===-- ClangExternalASTSourceCallbacks.cpp -------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "Plugins/ExpressionParser/Clang/ClangExternalASTSourceCallbacks.h"
#include "Plugins/TypeSystem/Clang/TypeSystemClang.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclObjC.h"
#include <optional>
using namespace lldb_private;
char ClangExternalASTSourceCallbacks::ID;
void ClangExternalASTSourceCallbacks::CompleteType(clang::TagDecl *tag_decl) {
m_ast.CompleteTagDecl(tag_decl);
}
void ClangExternalASTSourceCallbacks::CompleteType(
clang::ObjCInterfaceDecl *objc_decl) {
m_ast.CompleteObjCInterfaceDecl(objc_decl);
}
bool ClangExternalASTSourceCallbacks::layoutRecordType(
const clang::RecordDecl *Record, uint64_t &Size, uint64_t &Alignment,
llvm::DenseMap<const clang::FieldDecl *, uint64_t> &FieldOffsets,
llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits> &BaseOffsets,
llvm::DenseMap<const clang::CXXRecordDecl *, clang::CharUnits>
&VirtualBaseOffsets) {
return m_ast.LayoutRecordType(Record, Size, Alignment, FieldOffsets,
BaseOffsets, VirtualBaseOffsets);
}
void ClangExternalASTSourceCallbacks::FindExternalLexicalDecls(
const clang::DeclContext *decl_ctx,
llvm::function_ref<bool(clang::Decl::Kind)> IsKindWeWant,
llvm::SmallVectorImpl<clang::Decl *> &decls) {
if (decl_ctx) {
clang::TagDecl *tag_decl = llvm::dyn_cast<clang::TagDecl>(
const_cast<clang::DeclContext *>(decl_ctx));
if (tag_decl)
CompleteType(tag_decl);
}
}
bool ClangExternalASTSourceCallbacks::FindExternalVisibleDeclsByName(
const clang::DeclContext *DC, clang::DeclarationName Name) {
llvm::SmallVector<clang::NamedDecl *, 4> decls;
// Objective-C methods are not added into the LookupPtr when they originate
// from an external source. SetExternalVisibleDeclsForName() adds them.
if (auto *oid = llvm::dyn_cast<clang::ObjCInterfaceDecl>(DC)) {
clang::ObjCContainerDecl::method_range noload_methods(oid->noload_decls());
for (auto *omd : noload_methods)
if (omd->getDeclName() == Name)
decls.push_back(omd);
}
return !SetExternalVisibleDeclsForName(DC, Name, decls).empty();
}
OptionalClangModuleID
ClangExternalASTSourceCallbacks::RegisterModule(clang::Module *module) {
m_modules.push_back(module);
unsigned id = m_modules.size();
m_ids.insert({module, id});
return OptionalClangModuleID(id);
}
std::optional<clang::ASTSourceDescriptor>
ClangExternalASTSourceCallbacks::getSourceDescriptor(unsigned id) {
if (clang::Module *module = getModule(id))
return {*module};
return {};
}
clang::Module *ClangExternalASTSourceCallbacks::getModule(unsigned id) {
if (id && id <= m_modules.size())
return m_modules[id - 1];
return nullptr;
}
OptionalClangModuleID
ClangExternalASTSourceCallbacks::GetIDForModule(clang::Module *module) {
return OptionalClangModuleID(m_ids[module]);
}
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