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 "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_decl: Record, size&: Size, alignment&: Alignment, field_offsets&: FieldOffsets,
37 base_offsets&: BaseOffsets, vbase_offsets&: 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 Val: 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 originate
57 // from an external source. SetExternalVisibleDeclsForName() adds them.
58 if (auto *oid = llvm::dyn_cast<clang::ObjCInterfaceDecl>(Val: 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: decls).empty();
65}
66
67OptionalClangModuleID
68ClangExternalASTSourceCallbacks::RegisterModule(clang::Module *module) {
69 m_modules.push_back(x: module);
70 unsigned id = m_modules.size();
71 m_ids.insert(KV: {module, id});
72 return OptionalClangModuleID(id);
73}
74
75std::optional<clang::ASTSourceDescriptor>
76ClangExternalASTSourceCallbacks::getSourceDescriptor(unsigned id) {
77 if (clang::Module *module = getModule(ID: 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
88OptionalClangModuleID
89ClangExternalASTSourceCallbacks::GetIDForModule(clang::Module *module) {
90 return OptionalClangModuleID(m_ids[module]);
91}
92

source code of lldb/source/Plugins/ExpressionParser/Clang/ClangExternalASTSourceCallbacks.cpp