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_decl: Record, size&: Size, alignment&: Alignment, field_offsets&: FieldOffsets,
36 base_offsets&: BaseOffsets, vbase_offsets&: 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 Val: 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>(Val: 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: decls).empty();
63}
64
65OptionalClangModuleID
66ClangExternalASTSourceCallbacks::RegisterModule(clang::Module *module) {
67 m_modules.push_back(x: module);
68 unsigned id = m_modules.size();
69 m_ids.insert(KV: {module, id});
70 return OptionalClangModuleID(id);
71}
72
73std::optional<clang::ASTSourceDescriptor>
74ClangExternalASTSourceCallbacks::getSourceDescriptor(unsigned id) {
75 if (clang::Module *module = getModule(ID: 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

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