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