| //===-- ClangASTSource.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 "ClangASTSource.h" |
| |
| #include "ClangDeclVendor.h" |
| #include "ClangModulesDeclVendor.h" |
| |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/ModuleList.h" |
| #include "lldb/Symbol/CompilerDeclContext.h" |
| #include "lldb/Symbol/Function.h" |
| #include "lldb/Symbol/SymbolFile.h" |
| #include "lldb/Symbol/TaggedASTType.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Utility/Log.h" |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/RecordLayout.h" |
| #include "clang/Basic/SourceManager.h" |
| |
| #include "Plugins/ExpressionParser/Clang/ClangUtil.h" |
| #include "Plugins/LanguageRuntime/ObjC/ObjCLanguageRuntime.h" |
| #include "Plugins/TypeSystem/Clang/TypeSystemClang.h" |
| |
| #include <memory> |
| #include <vector> |
| |
| using namespace clang; |
| using namespace lldb_private; |
| |
| // Scoped class that will remove an active lexical decl from the set when it |
| // goes out of scope. |
| namespace { |
| class ScopedLexicalDeclEraser { |
| public: |
| ScopedLexicalDeclEraser(std::set<const clang::Decl *> &decls, |
| const clang::Decl *decl) |
| : m_active_lexical_decls(decls), m_decl(decl) {} |
| |
| ~ScopedLexicalDeclEraser() { m_active_lexical_decls.erase(m_decl); } |
| |
| private: |
| std::set<const clang::Decl *> &m_active_lexical_decls; |
| const clang::Decl *m_decl; |
| }; |
| } |
| |
| ClangASTSource::ClangASTSource( |
| const lldb::TargetSP &target, |
| const std::shared_ptr<ClangASTImporter> &importer) |
| : m_lookups_enabled(false), m_target(target), m_ast_context(nullptr), |
| m_ast_importer_sp(importer), m_active_lexical_decls(), |
| m_active_lookups() { |
| assert(m_ast_importer_sp && "No ClangASTImporter passed to ClangASTSource?"); |
| } |
| |
| void ClangASTSource::InstallASTContext(TypeSystemClang &clang_ast_context) { |
| m_ast_context = &clang_ast_context.getASTContext(); |
| m_clang_ast_context = &clang_ast_context; |
| m_file_manager = &m_ast_context->getSourceManager().getFileManager(); |
| m_ast_importer_sp->InstallMapCompleter(m_ast_context, *this); |
| } |
| |
| ClangASTSource::~ClangASTSource() { |
| m_ast_importer_sp->ForgetDestination(m_ast_context); |
| |
| if (!m_target) |
| return; |
| |
| // Unregister the current ASTContext as a source for all scratch |
| // ASTContexts in the ClangASTImporter. Without this the scratch AST might |
| // query the deleted ASTContext for additional type information. |
| // We unregister from *all* scratch ASTContexts in case a type got exported |
| // to a scratch AST that isn't the best fitting scratch ASTContext. |
| TypeSystemClang *scratch_ast = ScratchTypeSystemClang::GetForTarget( |
| *m_target, ScratchTypeSystemClang::DefaultAST, false); |
| |
| if (!scratch_ast) |
| return; |
| |
| ScratchTypeSystemClang *default_scratch_ast = |
| llvm::cast<ScratchTypeSystemClang>(scratch_ast); |
| // Unregister from the default scratch AST (and all sub-ASTs). |
| default_scratch_ast->ForgetSource(m_ast_context, *m_ast_importer_sp); |
| } |
| |
| void ClangASTSource::StartTranslationUnit(ASTConsumer *Consumer) { |
| if (!m_ast_context) |
| return; |
| |
| m_ast_context->getTranslationUnitDecl()->setHasExternalVisibleStorage(); |
| m_ast_context->getTranslationUnitDecl()->setHasExternalLexicalStorage(); |
| } |
| |
| // The core lookup interface. |
| bool ClangASTSource::FindExternalVisibleDeclsByName( |
| const DeclContext *decl_ctx, DeclarationName clang_decl_name) { |
| if (!m_ast_context) { |
| SetNoExternalVisibleDeclsForName(decl_ctx, clang_decl_name); |
| return false; |
| } |
| |
| std::string decl_name(clang_decl_name.getAsString()); |
| |
| switch (clang_decl_name.getNameKind()) { |
| // Normal identifiers. |
| case DeclarationName::Identifier: { |
| clang::IdentifierInfo *identifier_info = |
| clang_decl_name.getAsIdentifierInfo(); |
| |
| if (!identifier_info || identifier_info->getBuiltinID() != 0) { |
| SetNoExternalVisibleDeclsForName(decl_ctx, clang_decl_name); |
| return false; |
| } |
| } break; |
| |
| // Operator names. |
| case DeclarationName::CXXOperatorName: |
| case DeclarationName::CXXLiteralOperatorName: |
| break; |
| |
| // Using directives found in this context. |
| // Tell Sema we didn't find any or we'll end up getting asked a *lot*. |
| case DeclarationName::CXXUsingDirective: |
| SetNoExternalVisibleDeclsForName(decl_ctx, clang_decl_name); |
| return false; |
| |
| case DeclarationName::ObjCZeroArgSelector: |
| case DeclarationName::ObjCOneArgSelector: |
| case DeclarationName::ObjCMultiArgSelector: { |
| llvm::SmallVector<NamedDecl *, 1> method_decls; |
| |
| NameSearchContext method_search_context(*m_clang_ast_context, method_decls, |
| clang_decl_name, decl_ctx); |
| |
| FindObjCMethodDecls(method_search_context); |
| |
| SetExternalVisibleDeclsForName(decl_ctx, clang_decl_name, method_decls); |
| return (method_decls.size() > 0); |
| } |
| // These aren't possible in the global context. |
| case DeclarationName::CXXConstructorName: |
| case DeclarationName::CXXDestructorName: |
| case DeclarationName::CXXConversionFunctionName: |
| case DeclarationName::CXXDeductionGuideName: |
| SetNoExternalVisibleDeclsForName(decl_ctx, clang_decl_name); |
| return false; |
| } |
| |
| if (!GetLookupsEnabled()) { |
| // Wait until we see a '$' at the start of a name before we start doing any |
| // lookups so we can avoid lookup up all of the builtin types. |
| if (!decl_name.empty() && decl_name[0] == '$') { |
| SetLookupsEnabled(true); |
| } else { |
| SetNoExternalVisibleDeclsForName(decl_ctx, clang_decl_name); |
| return false; |
| } |
| } |
| |
| ConstString const_decl_name(decl_name.c_str()); |
| |
| const char *uniqued_const_decl_name = const_decl_name.GetCString(); |
| if (m_active_lookups.find(uniqued_const_decl_name) != |
| m_active_lookups.end()) { |
| // We are currently looking up this name... |
| SetNoExternalVisibleDeclsForName(decl_ctx, clang_decl_name); |
| return false; |
| } |
| m_active_lookups.insert(uniqued_const_decl_name); |
| llvm::SmallVector<NamedDecl *, 4> name_decls; |
| NameSearchContext name_search_context(*m_clang_ast_context, name_decls, |
| clang_decl_name, decl_ctx); |
| FindExternalVisibleDecls(name_search_context); |
| SetExternalVisibleDeclsForName(decl_ctx, clang_decl_name, name_decls); |
| m_active_lookups.erase(uniqued_const_decl_name); |
| return (name_decls.size() != 0); |
| } |
| |
| TagDecl *ClangASTSource::FindCompleteType(const TagDecl *decl) { |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| if (const NamespaceDecl *namespace_context = |
| dyn_cast<NamespaceDecl>(decl->getDeclContext())) { |
| ClangASTImporter::NamespaceMapSP namespace_map = |
| m_ast_importer_sp->GetNamespaceMap(namespace_context); |
| |
| LLDB_LOGV(log, " CTD Inspecting namespace map{0} ({1} entries)", |
| namespace_map.get(), namespace_map->size()); |
| |
| if (!namespace_map) |
| return nullptr; |
| |
| for (const ClangASTImporter::NamespaceMapItem &item : *namespace_map) { |
| LLDB_LOG(log, " CTD Searching namespace {0} in module {1}", |
| item.second.GetName(), item.first->GetFileSpec().GetFilename()); |
| |
| TypeList types; |
| |
| ConstString name(decl->getName()); |
| |
| item.first->FindTypesInNamespace(name, item.second, UINT32_MAX, types); |
| |
| for (uint32_t ti = 0, te = types.GetSize(); ti != te; ++ti) { |
| lldb::TypeSP type = types.GetTypeAtIndex(ti); |
| |
| if (!type) |
| continue; |
| |
| CompilerType clang_type(type->GetFullCompilerType()); |
| |
| if (!ClangUtil::IsClangType(clang_type)) |
| continue; |
| |
| const TagType *tag_type = |
| ClangUtil::GetQualType(clang_type)->getAs<TagType>(); |
| |
| if (!tag_type) |
| continue; |
| |
| TagDecl *candidate_tag_decl = |
| const_cast<TagDecl *>(tag_type->getDecl()); |
| |
| if (TypeSystemClang::GetCompleteDecl( |
| &candidate_tag_decl->getASTContext(), candidate_tag_decl)) |
| return candidate_tag_decl; |
| } |
| } |
| } else { |
| TypeList types; |
| |
| ConstString name(decl->getName()); |
| |
| const ModuleList &module_list = m_target->GetImages(); |
| |
| bool exact_match = false; |
| llvm::DenseSet<SymbolFile *> searched_symbol_files; |
| module_list.FindTypes(nullptr, name, exact_match, UINT32_MAX, |
| searched_symbol_files, types); |
| |
| for (uint32_t ti = 0, te = types.GetSize(); ti != te; ++ti) { |
| lldb::TypeSP type = types.GetTypeAtIndex(ti); |
| |
| if (!type) |
| continue; |
| |
| CompilerType clang_type(type->GetFullCompilerType()); |
| |
| if (!ClangUtil::IsClangType(clang_type)) |
| continue; |
| |
| const TagType *tag_type = |
| ClangUtil::GetQualType(clang_type)->getAs<TagType>(); |
| |
| if (!tag_type) |
| continue; |
| |
| TagDecl *candidate_tag_decl = const_cast<TagDecl *>(tag_type->getDecl()); |
| |
| // We have found a type by basename and we need to make sure the decl |
| // contexts are the same before we can try to complete this type with |
| // another |
| if (!TypeSystemClang::DeclsAreEquivalent(const_cast<TagDecl *>(decl), |
| candidate_tag_decl)) |
| continue; |
| |
| if (TypeSystemClang::GetCompleteDecl(&candidate_tag_decl->getASTContext(), |
| candidate_tag_decl)) |
| return candidate_tag_decl; |
| } |
| } |
| return nullptr; |
| } |
| |
| void ClangASTSource::CompleteType(TagDecl *tag_decl) { |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| if (log) { |
| LLDB_LOG(log, |
| " CompleteTagDecl on (ASTContext*){0} Completing " |
| "(TagDecl*){1} named {2}", |
| m_clang_ast_context->getDisplayName(), tag_decl, |
| tag_decl->getName()); |
| |
| LLDB_LOG(log, " CTD Before:\n{0}", ClangUtil::DumpDecl(tag_decl)); |
| } |
| |
| auto iter = m_active_lexical_decls.find(tag_decl); |
| if (iter != m_active_lexical_decls.end()) |
| return; |
| m_active_lexical_decls.insert(tag_decl); |
| ScopedLexicalDeclEraser eraser(m_active_lexical_decls, tag_decl); |
| |
| if (!m_ast_importer_sp->CompleteTagDecl(tag_decl)) { |
| // We couldn't complete the type. Maybe there's a definition somewhere |
| // else that can be completed. |
| if (TagDecl *alternate = FindCompleteType(tag_decl)) |
| m_ast_importer_sp->CompleteTagDeclWithOrigin(tag_decl, alternate); |
| } |
| |
| LLDB_LOG(log, " [CTD] After:\n{0}", ClangUtil::DumpDecl(tag_decl)); |
| } |
| |
| void ClangASTSource::CompleteType(clang::ObjCInterfaceDecl *interface_decl) { |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| LLDB_LOG(log, |
| " [CompleteObjCInterfaceDecl] on (ASTContext*){0} '{1}' " |
| "Completing an ObjCInterfaceDecl named {1}", |
| m_ast_context, m_clang_ast_context->getDisplayName(), |
| interface_decl->getName()); |
| LLDB_LOG(log, " [COID] Before:\n{0}", |
| ClangUtil::DumpDecl(interface_decl)); |
| |
| ClangASTImporter::DeclOrigin original = m_ast_importer_sp->GetDeclOrigin(interface_decl); |
| |
| if (original.Valid()) { |
| if (ObjCInterfaceDecl *original_iface_decl = |
| dyn_cast<ObjCInterfaceDecl>(original.decl)) { |
| ObjCInterfaceDecl *complete_iface_decl = |
| GetCompleteObjCInterface(original_iface_decl); |
| |
| if (complete_iface_decl && (complete_iface_decl != original_iface_decl)) { |
| m_ast_importer_sp->SetDeclOrigin(interface_decl, complete_iface_decl); |
| } |
| } |
| } |
| |
| m_ast_importer_sp->CompleteObjCInterfaceDecl(interface_decl); |
| |
| if (interface_decl->getSuperClass() && |
| interface_decl->getSuperClass() != interface_decl) |
| CompleteType(interface_decl->getSuperClass()); |
| |
| LLDB_LOG(log, " [COID] After:"); |
| LLDB_LOG(log, " [COID] {0}", ClangUtil::DumpDecl(interface_decl)); |
| } |
| |
| clang::ObjCInterfaceDecl *ClangASTSource::GetCompleteObjCInterface( |
| const clang::ObjCInterfaceDecl *interface_decl) { |
| lldb::ProcessSP process(m_target->GetProcessSP()); |
| |
| if (!process) |
| return nullptr; |
| |
| ObjCLanguageRuntime *language_runtime(ObjCLanguageRuntime::Get(*process)); |
| |
| if (!language_runtime) |
| return nullptr; |
| |
| ConstString class_name(interface_decl->getNameAsString().c_str()); |
| |
| lldb::TypeSP complete_type_sp( |
| language_runtime->LookupInCompleteClassCache(class_name)); |
| |
| if (!complete_type_sp) |
| return nullptr; |
| |
| TypeFromUser complete_type = |
| TypeFromUser(complete_type_sp->GetFullCompilerType()); |
| lldb::opaque_compiler_type_t complete_opaque_type = |
| complete_type.GetOpaqueQualType(); |
| |
| if (!complete_opaque_type) |
| return nullptr; |
| |
| const clang::Type *complete_clang_type = |
| QualType::getFromOpaquePtr(complete_opaque_type).getTypePtr(); |
| const ObjCInterfaceType *complete_interface_type = |
| dyn_cast<ObjCInterfaceType>(complete_clang_type); |
| |
| if (!complete_interface_type) |
| return nullptr; |
| |
| ObjCInterfaceDecl *complete_iface_decl(complete_interface_type->getDecl()); |
| |
| return complete_iface_decl; |
| } |
| |
| void ClangASTSource::FindExternalLexicalDecls( |
| const DeclContext *decl_context, |
| llvm::function_ref<bool(Decl::Kind)> predicate, |
| llvm::SmallVectorImpl<Decl *> &decls) { |
| |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| const Decl *context_decl = dyn_cast<Decl>(decl_context); |
| |
| if (!context_decl) |
| return; |
| |
| auto iter = m_active_lexical_decls.find(context_decl); |
| if (iter != m_active_lexical_decls.end()) |
| return; |
| m_active_lexical_decls.insert(context_decl); |
| ScopedLexicalDeclEraser eraser(m_active_lexical_decls, context_decl); |
| |
| if (log) { |
| if (const NamedDecl *context_named_decl = dyn_cast<NamedDecl>(context_decl)) |
| LLDB_LOG(log, |
| "FindExternalLexicalDecls on (ASTContext*){0} '{1}' in " |
| "'{2}' (%sDecl*){3}", |
| m_ast_context, m_clang_ast_context->getDisplayName(), |
| context_named_decl->getNameAsString().c_str(), |
| context_decl->getDeclKindName(), |
| static_cast<const void *>(context_decl)); |
| else if (context_decl) |
| LLDB_LOG(log, |
| "FindExternalLexicalDecls on (ASTContext*){0} '{1}' in " |
| "({2}Decl*){3}", |
| m_ast_context, m_clang_ast_context->getDisplayName(), |
| context_decl->getDeclKindName(), |
| static_cast<const void *>(context_decl)); |
| else |
| LLDB_LOG(log, |
| "FindExternalLexicalDecls on (ASTContext*){0} '{1}' in a " |
| "NULL context", |
| m_ast_context, m_clang_ast_context->getDisplayName()); |
| } |
| |
| ClangASTImporter::DeclOrigin original = m_ast_importer_sp->GetDeclOrigin(context_decl); |
| |
| if (!original.Valid()) |
| return; |
| |
| LLDB_LOG(log, " FELD Original decl {0} (Decl*){1:x}:\n{2}", |
| static_cast<void *>(original.ctx), |
| static_cast<void *>(original.decl), |
| ClangUtil::DumpDecl(original.decl)); |
| |
| if (ObjCInterfaceDecl *original_iface_decl = |
| dyn_cast<ObjCInterfaceDecl>(original.decl)) { |
| ObjCInterfaceDecl *complete_iface_decl = |
| GetCompleteObjCInterface(original_iface_decl); |
| |
| if (complete_iface_decl && (complete_iface_decl != original_iface_decl)) { |
| original.decl = complete_iface_decl; |
| original.ctx = &complete_iface_decl->getASTContext(); |
| |
| m_ast_importer_sp->SetDeclOrigin(context_decl, complete_iface_decl); |
| } |
| } |
| |
| if (TagDecl *original_tag_decl = dyn_cast<TagDecl>(original.decl)) { |
| ExternalASTSource *external_source = original.ctx->getExternalSource(); |
| |
| if (external_source) |
| external_source->CompleteType(original_tag_decl); |
| } |
| |
| const DeclContext *original_decl_context = |
| dyn_cast<DeclContext>(original.decl); |
| |
| if (!original_decl_context) |
| return; |
| |
| // Indicates whether we skipped any Decls of the original DeclContext. |
| bool SkippedDecls = false; |
| for (Decl *decl : original_decl_context->decls()) { |
| // The predicate function returns true if the passed declaration kind is |
| // the one we are looking for. |
| // See clang::ExternalASTSource::FindExternalLexicalDecls() |
| if (predicate(decl->getKind())) { |
| if (log) { |
| std::string ast_dump = ClangUtil::DumpDecl(decl); |
| if (const NamedDecl *context_named_decl = |
| dyn_cast<NamedDecl>(context_decl)) |
| LLDB_LOG(log, " FELD Adding [to {0}Decl {1}] lexical {2}Decl {3}", |
| context_named_decl->getDeclKindName(), |
| context_named_decl->getName(), decl->getDeclKindName(), |
| ast_dump); |
| else |
| LLDB_LOG(log, " FELD Adding lexical {0}Decl {1}", |
| decl->getDeclKindName(), ast_dump); |
| } |
| |
| Decl *copied_decl = CopyDecl(decl); |
| |
| if (!copied_decl) |
| continue; |
| |
| // FIXME: We should add the copied decl to the 'decls' list. This would |
| // add the copied Decl into the DeclContext and make sure that we |
| // correctly propagate that we added some Decls back to Clang. |
| // By leaving 'decls' empty we incorrectly return false from |
| // DeclContext::LoadLexicalDeclsFromExternalStorage which might cause |
| // lookup issues later on. |
| // We can't just add them for now as the ASTImporter already added the |
| // decl into the DeclContext and this would add it twice. |
| |
| if (FieldDecl *copied_field = dyn_cast<FieldDecl>(copied_decl)) { |
| QualType copied_field_type = copied_field->getType(); |
| |
| m_ast_importer_sp->RequireCompleteType(copied_field_type); |
| } |
| } else { |
| SkippedDecls = true; |
| } |
| } |
| |
| // CopyDecl may build a lookup table which may set up ExternalLexicalStorage |
| // to false. However, since we skipped some of the external Decls we must |
| // set it back! |
| if (SkippedDecls) { |
| decl_context->setHasExternalLexicalStorage(true); |
| // This sets HasLazyExternalLexicalLookups to true. By setting this bit we |
| // ensure that the lookup table is rebuilt, which means the external source |
| // is consulted again when a clang::DeclContext::lookup is called. |
| const_cast<DeclContext *>(decl_context)->setMustBuildLookupTable(); |
| } |
| |
| return; |
| } |
| |
| void ClangASTSource::FindExternalVisibleDecls(NameSearchContext &context) { |
| assert(m_ast_context); |
| |
| const ConstString name(context.m_decl_name.getAsString().c_str()); |
| |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| if (log) { |
| if (!context.m_decl_context) |
| LLDB_LOG(log, |
| "ClangASTSource::FindExternalVisibleDecls on " |
| "(ASTContext*){0} '{1}' for '{2}' in a NULL DeclContext", |
| m_ast_context, m_clang_ast_context->getDisplayName(), name); |
| else if (const NamedDecl *context_named_decl = |
| dyn_cast<NamedDecl>(context.m_decl_context)) |
| LLDB_LOG(log, |
| "ClangASTSource::FindExternalVisibleDecls on " |
| "(ASTContext*){0} '{1}' for '{2}' in '{3}'", |
| m_ast_context, m_clang_ast_context->getDisplayName(), name, |
| context_named_decl->getName()); |
| else |
| LLDB_LOG(log, |
| "ClangASTSource::FindExternalVisibleDecls on " |
| "(ASTContext*){0} '{1}' for '{2}' in a '{3}'", |
| m_ast_context, m_clang_ast_context->getDisplayName(), name, |
| context.m_decl_context->getDeclKindName()); |
| } |
| |
| if (isa<NamespaceDecl>(context.m_decl_context)) { |
| LookupInNamespace(context); |
| } else if (isa<ObjCInterfaceDecl>(context.m_decl_context)) { |
| FindObjCPropertyAndIvarDecls(context); |
| } else if (!isa<TranslationUnitDecl>(context.m_decl_context)) { |
| // we shouldn't be getting FindExternalVisibleDecls calls for these |
| return; |
| } else { |
| CompilerDeclContext namespace_decl; |
| |
| LLDB_LOG(log, " CAS::FEVD Searching the root namespace"); |
| |
| FindExternalVisibleDecls(context, lldb::ModuleSP(), namespace_decl); |
| } |
| |
| if (!context.m_namespace_map->empty()) { |
| if (log && log->GetVerbose()) |
| LLDB_LOG(log, " CAS::FEVD Registering namespace map {0} ({1} entries)", |
| context.m_namespace_map.get(), context.m_namespace_map->size()); |
| |
| NamespaceDecl *clang_namespace_decl = |
| AddNamespace(context, context.m_namespace_map); |
| |
| if (clang_namespace_decl) |
| clang_namespace_decl->setHasExternalVisibleStorage(); |
| } |
| } |
| |
| clang::Sema *ClangASTSource::getSema() { |
| return m_clang_ast_context->getSema(); |
| } |
| |
| bool ClangASTSource::IgnoreName(const ConstString name, |
| bool ignore_all_dollar_names) { |
| static const ConstString id_name("id"); |
| static const ConstString Class_name("Class"); |
| |
| if (m_ast_context->getLangOpts().ObjC) |
| if (name == id_name || name == Class_name) |
| return true; |
| |
| StringRef name_string_ref = name.GetStringRef(); |
| |
| // The ClangASTSource is not responsible for finding $-names. |
| return name_string_ref.empty() || |
| (ignore_all_dollar_names && name_string_ref.startswith("$")) || |
| name_string_ref.startswith("_$"); |
| } |
| |
| void ClangASTSource::FindExternalVisibleDecls( |
| NameSearchContext &context, lldb::ModuleSP module_sp, |
| CompilerDeclContext &namespace_decl) { |
| assert(m_ast_context); |
| |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| SymbolContextList sc_list; |
| |
| const ConstString name(context.m_decl_name.getAsString().c_str()); |
| if (IgnoreName(name, true)) |
| return; |
| |
| if (!m_target) |
| return; |
| |
| FillNamespaceMap(context, module_sp, namespace_decl); |
| |
| if (context.m_found_type) |
| return; |
| |
| TypeList types; |
| const bool exact_match = true; |
| llvm::DenseSet<lldb_private::SymbolFile *> searched_symbol_files; |
| if (module_sp && namespace_decl) |
| module_sp->FindTypesInNamespace(name, namespace_decl, 1, types); |
| else { |
| m_target->GetImages().FindTypes(module_sp.get(), name, exact_match, 1, |
| searched_symbol_files, types); |
| } |
| |
| if (size_t num_types = types.GetSize()) { |
| for (size_t ti = 0; ti < num_types; ++ti) { |
| lldb::TypeSP type_sp = types.GetTypeAtIndex(ti); |
| |
| if (log) { |
| const char *name_string = type_sp->GetName().GetCString(); |
| |
| LLDB_LOG(log, " CAS::FEVD Matching type found for \"{0}\": {1}", name, |
| (name_string ? name_string : "<anonymous>")); |
| } |
| |
| CompilerType full_type = type_sp->GetFullCompilerType(); |
| |
| CompilerType copied_clang_type(GuardedCopyType(full_type)); |
| |
| if (!copied_clang_type) { |
| LLDB_LOG(log, " CAS::FEVD - Couldn't export a type"); |
| |
| continue; |
| } |
| |
| context.AddTypeDecl(copied_clang_type); |
| |
| context.m_found_type = true; |
| break; |
| } |
| } |
| |
| if (!context.m_found_type) { |
| // Try the modules next. |
| FindDeclInModules(context, name); |
| } |
| |
| if (!context.m_found_type) { |
| FindDeclInObjCRuntime(context, name); |
| } |
| } |
| |
| void ClangASTSource::FillNamespaceMap( |
| NameSearchContext &context, lldb::ModuleSP module_sp, |
| const CompilerDeclContext &namespace_decl) { |
| const ConstString name(context.m_decl_name.getAsString().c_str()); |
| if (IgnoreName(name, true)) |
| return; |
| |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| if (module_sp && namespace_decl) { |
| CompilerDeclContext found_namespace_decl; |
| |
| if (SymbolFile *symbol_file = module_sp->GetSymbolFile()) { |
| found_namespace_decl = symbol_file->FindNamespace(name, namespace_decl); |
| |
| if (found_namespace_decl) { |
| context.m_namespace_map->push_back( |
| std::pair<lldb::ModuleSP, CompilerDeclContext>( |
| module_sp, found_namespace_decl)); |
| |
| LLDB_LOG(log, " CAS::FEVD Found namespace {0} in module {1}", name, |
| module_sp->GetFileSpec().GetFilename()); |
| } |
| } |
| return; |
| } |
| |
| for (lldb::ModuleSP image : m_target->GetImages().Modules()) { |
| if (!image) |
| continue; |
| |
| CompilerDeclContext found_namespace_decl; |
| |
| SymbolFile *symbol_file = image->GetSymbolFile(); |
| |
| if (!symbol_file) |
| continue; |
| |
| found_namespace_decl = symbol_file->FindNamespace(name, namespace_decl); |
| |
| if (found_namespace_decl) { |
| context.m_namespace_map->push_back( |
| std::pair<lldb::ModuleSP, CompilerDeclContext>(image, |
| found_namespace_decl)); |
| |
| LLDB_LOG(log, " CAS::FEVD Found namespace {0} in module {1}", name, |
| image->GetFileSpec().GetFilename()); |
| } |
| } |
| } |
| |
| template <class D> class TaggedASTDecl { |
| public: |
| TaggedASTDecl() : decl(nullptr) {} |
| TaggedASTDecl(D *_decl) : decl(_decl) {} |
| bool IsValid() const { return (decl != nullptr); } |
| bool IsInvalid() const { return !IsValid(); } |
| D *operator->() const { return decl; } |
| D *decl; |
| }; |
| |
| template <class D2, template <class D> class TD, class D1> |
| TD<D2> DynCast(TD<D1> source) { |
| return TD<D2>(dyn_cast<D2>(source.decl)); |
| } |
| |
| template <class D = Decl> class DeclFromParser; |
| template <class D = Decl> class DeclFromUser; |
| |
| template <class D> class DeclFromParser : public TaggedASTDecl<D> { |
| public: |
| DeclFromParser() : TaggedASTDecl<D>() {} |
| DeclFromParser(D *_decl) : TaggedASTDecl<D>(_decl) {} |
| |
| DeclFromUser<D> GetOrigin(ClangASTSource &source); |
| }; |
| |
| template <class D> class DeclFromUser : public TaggedASTDecl<D> { |
| public: |
| DeclFromUser() : TaggedASTDecl<D>() {} |
| DeclFromUser(D *_decl) : TaggedASTDecl<D>(_decl) {} |
| |
| DeclFromParser<D> Import(ClangASTSource &source); |
| }; |
| |
| template <class D> |
| DeclFromUser<D> DeclFromParser<D>::GetOrigin(ClangASTSource &source) { |
| ClangASTImporter::DeclOrigin origin = source.GetDeclOrigin(this->decl); |
| if (!origin.Valid()) |
| return DeclFromUser<D>(); |
| return DeclFromUser<D>(dyn_cast<D>(origin.decl)); |
| } |
| |
| template <class D> |
| DeclFromParser<D> DeclFromUser<D>::Import(ClangASTSource &source) { |
| DeclFromParser<> parser_generic_decl(source.CopyDecl(this->decl)); |
| if (parser_generic_decl.IsInvalid()) |
| return DeclFromParser<D>(); |
| return DeclFromParser<D>(dyn_cast<D>(parser_generic_decl.decl)); |
| } |
| |
| bool ClangASTSource::FindObjCMethodDeclsWithOrigin( |
| NameSearchContext &context, ObjCInterfaceDecl *original_interface_decl, |
| const char *log_info) { |
| const DeclarationName &decl_name(context.m_decl_name); |
| clang::ASTContext *original_ctx = &original_interface_decl->getASTContext(); |
| |
| Selector original_selector; |
| |
| if (decl_name.isObjCZeroArgSelector()) { |
| IdentifierInfo *ident = &original_ctx->Idents.get(decl_name.getAsString()); |
| original_selector = original_ctx->Selectors.getSelector(0, &ident); |
| } else if (decl_name.isObjCOneArgSelector()) { |
| const std::string &decl_name_string = decl_name.getAsString(); |
| std::string decl_name_string_without_colon(decl_name_string.c_str(), |
| decl_name_string.length() - 1); |
| IdentifierInfo *ident = |
| &original_ctx->Idents.get(decl_name_string_without_colon); |
| original_selector = original_ctx->Selectors.getSelector(1, &ident); |
| } else { |
| SmallVector<IdentifierInfo *, 4> idents; |
| |
| clang::Selector sel = decl_name.getObjCSelector(); |
| |
| unsigned num_args = sel.getNumArgs(); |
| |
| for (unsigned i = 0; i != num_args; ++i) { |
| idents.push_back(&original_ctx->Idents.get(sel.getNameForSlot(i))); |
| } |
| |
| original_selector = |
| original_ctx->Selectors.getSelector(num_args, idents.data()); |
| } |
| |
| DeclarationName original_decl_name(original_selector); |
| |
| llvm::SmallVector<NamedDecl *, 1> methods; |
| |
| TypeSystemClang::GetCompleteDecl(original_ctx, original_interface_decl); |
| |
| if (ObjCMethodDecl *instance_method_decl = |
| original_interface_decl->lookupInstanceMethod(original_selector)) { |
| methods.push_back(instance_method_decl); |
| } else if (ObjCMethodDecl *class_method_decl = |
| original_interface_decl->lookupClassMethod( |
| original_selector)) { |
| methods.push_back(class_method_decl); |
| } |
| |
| if (methods.empty()) { |
| return false; |
| } |
| |
| for (NamedDecl *named_decl : methods) { |
| if (!named_decl) |
| continue; |
| |
| ObjCMethodDecl *result_method = dyn_cast<ObjCMethodDecl>(named_decl); |
| |
| if (!result_method) |
| continue; |
| |
| Decl *copied_decl = CopyDecl(result_method); |
| |
| if (!copied_decl) |
| continue; |
| |
| ObjCMethodDecl *copied_method_decl = dyn_cast<ObjCMethodDecl>(copied_decl); |
| |
| if (!copied_method_decl) |
| continue; |
| |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| LLDB_LOG(log, " CAS::FOMD found ({0}) {1}", log_info, |
| ClangUtil::DumpDecl(copied_method_decl)); |
| |
| context.AddNamedDecl(copied_method_decl); |
| } |
| |
| return true; |
| } |
| |
| void ClangASTSource::FindDeclInModules(NameSearchContext &context, |
| ConstString name) { |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| std::shared_ptr<ClangModulesDeclVendor> modules_decl_vendor = |
| GetClangModulesDeclVendor(); |
| if (!modules_decl_vendor) |
| return; |
| |
| bool append = false; |
| uint32_t max_matches = 1; |
| std::vector<clang::NamedDecl *> decls; |
| |
| if (!modules_decl_vendor->FindDecls(name, append, max_matches, decls)) |
| return; |
| |
| LLDB_LOG(log, " CAS::FEVD Matching entity found for \"{0}\" in the modules", |
| name); |
| |
| clang::NamedDecl *const decl_from_modules = decls[0]; |
| |
| if (llvm::isa<clang::TypeDecl>(decl_from_modules) || |
| llvm::isa<clang::ObjCContainerDecl>(decl_from_modules) || |
| llvm::isa<clang::EnumConstantDecl>(decl_from_modules)) { |
| clang::Decl *copied_decl = CopyDecl(decl_from_modules); |
| clang::NamedDecl *copied_named_decl = |
| copied_decl ? dyn_cast<clang::NamedDecl>(copied_decl) : nullptr; |
| |
| if (!copied_named_decl) { |
| LLDB_LOG(log, " CAS::FEVD - Couldn't export a type from the modules"); |
| |
| return; |
| } |
| |
| context.AddNamedDecl(copied_named_decl); |
| |
| context.m_found_type = true; |
| } |
| } |
| |
| void ClangASTSource::FindDeclInObjCRuntime(NameSearchContext &context, |
| ConstString name) { |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| lldb::ProcessSP process(m_target->GetProcessSP()); |
| |
| if (!process) |
| return; |
| |
| ObjCLanguageRuntime *language_runtime(ObjCLanguageRuntime::Get(*process)); |
| |
| if (!language_runtime) |
| return; |
| |
| DeclVendor *decl_vendor = language_runtime->GetDeclVendor(); |
| |
| if (!decl_vendor) |
| return; |
| |
| bool append = false; |
| uint32_t max_matches = 1; |
| std::vector<clang::NamedDecl *> decls; |
| |
| auto *clang_decl_vendor = llvm::cast<ClangDeclVendor>(decl_vendor); |
| if (!clang_decl_vendor->FindDecls(name, append, max_matches, decls)) |
| return; |
| |
| LLDB_LOG(log, " CAS::FEVD Matching type found for \"{0}\" in the runtime", |
| name); |
| |
| clang::Decl *copied_decl = CopyDecl(decls[0]); |
| clang::NamedDecl *copied_named_decl = |
| copied_decl ? dyn_cast<clang::NamedDecl>(copied_decl) : nullptr; |
| |
| if (!copied_named_decl) { |
| LLDB_LOG(log, " CAS::FEVD - Couldn't export a type from the runtime"); |
| |
| return; |
| } |
| |
| context.AddNamedDecl(copied_named_decl); |
| } |
| |
| void ClangASTSource::FindObjCMethodDecls(NameSearchContext &context) { |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| const DeclarationName &decl_name(context.m_decl_name); |
| const DeclContext *decl_ctx(context.m_decl_context); |
| |
| const ObjCInterfaceDecl *interface_decl = |
| dyn_cast<ObjCInterfaceDecl>(decl_ctx); |
| |
| if (!interface_decl) |
| return; |
| |
| do { |
| ClangASTImporter::DeclOrigin original = m_ast_importer_sp->GetDeclOrigin(interface_decl); |
| |
| if (!original.Valid()) |
| break; |
| |
| ObjCInterfaceDecl *original_interface_decl = |
| dyn_cast<ObjCInterfaceDecl>(original.decl); |
| |
| if (FindObjCMethodDeclsWithOrigin(context, original_interface_decl, |
| "at origin")) |
| return; // found it, no need to look any further |
| } while (false); |
| |
| StreamString ss; |
| |
| if (decl_name.isObjCZeroArgSelector()) { |
| ss.Printf("%s", decl_name.getAsString().c_str()); |
| } else if (decl_name.isObjCOneArgSelector()) { |
| ss.Printf("%s", decl_name.getAsString().c_str()); |
| } else { |
| clang::Selector sel = decl_name.getObjCSelector(); |
| |
| for (unsigned i = 0, e = sel.getNumArgs(); i != e; ++i) { |
| llvm::StringRef r = sel.getNameForSlot(i); |
| ss.Printf("%s:", r.str().c_str()); |
| } |
| } |
| ss.Flush(); |
| |
| if (ss.GetString().contains("$__lldb")) |
| return; // we don't need any results |
| |
| ConstString selector_name(ss.GetString()); |
| |
| LLDB_LOG(log, |
| "ClangASTSource::FindObjCMethodDecls on (ASTContext*){0} '{1}' " |
| "for selector [{2} {3}]", |
| m_ast_context, m_clang_ast_context->getDisplayName(), |
| interface_decl->getName(), selector_name); |
| SymbolContextList sc_list; |
| |
| ModuleFunctionSearchOptions function_options; |
| function_options.include_symbols = false; |
| function_options.include_inlines = false; |
| |
| std::string interface_name = interface_decl->getNameAsString(); |
| |
| do { |
| StreamString ms; |
| ms.Printf("-[%s %s]", interface_name.c_str(), selector_name.AsCString()); |
| ms.Flush(); |
| ConstString instance_method_name(ms.GetString()); |
| |
| sc_list.Clear(); |
| m_target->GetImages().FindFunctions(instance_method_name, |
| lldb::eFunctionNameTypeFull, |
| function_options, sc_list); |
| |
| if (sc_list.GetSize()) |
| break; |
| |
| ms.Clear(); |
| ms.Printf("+[%s %s]", interface_name.c_str(), selector_name.AsCString()); |
| ms.Flush(); |
| ConstString class_method_name(ms.GetString()); |
| |
| sc_list.Clear(); |
| m_target->GetImages().FindFunctions(class_method_name, |
| lldb::eFunctionNameTypeFull, |
| function_options, sc_list); |
| |
| if (sc_list.GetSize()) |
| break; |
| |
| // Fall back and check for methods in categories. If we find methods this |
| // way, we need to check that they're actually in categories on the desired |
| // class. |
| |
| SymbolContextList candidate_sc_list; |
| |
| m_target->GetImages().FindFunctions(selector_name, |
| lldb::eFunctionNameTypeSelector, |
| function_options, candidate_sc_list); |
| |
| for (uint32_t ci = 0, ce = candidate_sc_list.GetSize(); ci != ce; ++ci) { |
| SymbolContext candidate_sc; |
| |
| if (!candidate_sc_list.GetContextAtIndex(ci, candidate_sc)) |
| continue; |
| |
| if (!candidate_sc.function) |
| continue; |
| |
| const char *candidate_name = candidate_sc.function->GetName().AsCString(); |
| |
| const char *cursor = candidate_name; |
| |
| if (*cursor != '+' && *cursor != '-') |
| continue; |
| |
| ++cursor; |
| |
| if (*cursor != '[') |
| continue; |
| |
| ++cursor; |
| |
| size_t interface_len = interface_name.length(); |
| |
| if (strncmp(cursor, interface_name.c_str(), interface_len)) |
| continue; |
| |
| cursor += interface_len; |
| |
| if (*cursor == ' ' || *cursor == '(') |
| sc_list.Append(candidate_sc); |
| } |
| } while (false); |
| |
| if (sc_list.GetSize()) { |
| // We found a good function symbol. Use that. |
| |
| for (uint32_t i = 0, e = sc_list.GetSize(); i != e; ++i) { |
| SymbolContext sc; |
| |
| if (!sc_list.GetContextAtIndex(i, sc)) |
| continue; |
| |
| if (!sc.function) |
| continue; |
| |
| CompilerDeclContext function_decl_ctx = sc.function->GetDeclContext(); |
| if (!function_decl_ctx) |
| continue; |
| |
| ObjCMethodDecl *method_decl = |
| TypeSystemClang::DeclContextGetAsObjCMethodDecl(function_decl_ctx); |
| |
| if (!method_decl) |
| continue; |
| |
| ObjCInterfaceDecl *found_interface_decl = |
| method_decl->getClassInterface(); |
| |
| if (!found_interface_decl) |
| continue; |
| |
| if (found_interface_decl->getName() == interface_decl->getName()) { |
| Decl *copied_decl = CopyDecl(method_decl); |
| |
| if (!copied_decl) |
| continue; |
| |
| ObjCMethodDecl *copied_method_decl = |
| dyn_cast<ObjCMethodDecl>(copied_decl); |
| |
| if (!copied_method_decl) |
| continue; |
| |
| LLDB_LOG(log, " CAS::FOMD found (in symbols)\n{0}", |
| ClangUtil::DumpDecl(copied_method_decl)); |
| |
| context.AddNamedDecl(copied_method_decl); |
| } |
| } |
| |
| return; |
| } |
| |
| // Try the debug information. |
| |
| do { |
| ObjCInterfaceDecl *complete_interface_decl = GetCompleteObjCInterface( |
| const_cast<ObjCInterfaceDecl *>(interface_decl)); |
| |
| if (!complete_interface_decl) |
| break; |
| |
| // We found the complete interface. The runtime never needs to be queried |
| // in this scenario. |
| |
| DeclFromUser<const ObjCInterfaceDecl> complete_iface_decl( |
| complete_interface_decl); |
| |
| if (complete_interface_decl == interface_decl) |
| break; // already checked this one |
| |
| LLDB_LOG(log, |
| "CAS::FOPD trying origin " |
| "(ObjCInterfaceDecl*){0}/(ASTContext*){1}...", |
| complete_interface_decl, &complete_iface_decl->getASTContext()); |
| |
| FindObjCMethodDeclsWithOrigin(context, complete_interface_decl, |
| "in debug info"); |
| |
| return; |
| } while (false); |
| |
| do { |
| // Check the modules only if the debug information didn't have a complete |
| // interface. |
| |
| if (std::shared_ptr<ClangModulesDeclVendor> modules_decl_vendor = |
| GetClangModulesDeclVendor()) { |
| ConstString interface_name(interface_decl->getNameAsString().c_str()); |
| bool append = false; |
| uint32_t max_matches = 1; |
| std::vector<clang::NamedDecl *> decls; |
| |
| if (!modules_decl_vendor->FindDecls(interface_name, append, max_matches, |
| decls)) |
| break; |
| |
| ObjCInterfaceDecl *interface_decl_from_modules = |
| dyn_cast<ObjCInterfaceDecl>(decls[0]); |
| |
| if (!interface_decl_from_modules) |
| break; |
| |
| if (FindObjCMethodDeclsWithOrigin(context, interface_decl_from_modules, |
| "in modules")) |
| return; |
| } |
| } while (false); |
| |
| do { |
| // Check the runtime only if the debug information didn't have a complete |
| // interface and the modules don't get us anywhere. |
| |
| lldb::ProcessSP process(m_target->GetProcessSP()); |
| |
| if (!process) |
| break; |
| |
| ObjCLanguageRuntime *language_runtime(ObjCLanguageRuntime::Get(*process)); |
| |
| if (!language_runtime) |
| break; |
| |
| DeclVendor *decl_vendor = language_runtime->GetDeclVendor(); |
| |
| if (!decl_vendor) |
| break; |
| |
| ConstString interface_name(interface_decl->getNameAsString().c_str()); |
| bool append = false; |
| uint32_t max_matches = 1; |
| std::vector<clang::NamedDecl *> decls; |
| |
| auto *clang_decl_vendor = llvm::cast<ClangDeclVendor>(decl_vendor); |
| if (!clang_decl_vendor->FindDecls(interface_name, append, max_matches, |
| decls)) |
| break; |
| |
| ObjCInterfaceDecl *runtime_interface_decl = |
| dyn_cast<ObjCInterfaceDecl>(decls[0]); |
| |
| if (!runtime_interface_decl) |
| break; |
| |
| FindObjCMethodDeclsWithOrigin(context, runtime_interface_decl, |
| "in runtime"); |
| } while (false); |
| } |
| |
| static bool FindObjCPropertyAndIvarDeclsWithOrigin( |
| NameSearchContext &context, ClangASTSource &source, |
| DeclFromUser<const ObjCInterfaceDecl> &origin_iface_decl) { |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| if (origin_iface_decl.IsInvalid()) |
| return false; |
| |
| std::string name_str = context.m_decl_name.getAsString(); |
| StringRef name(name_str); |
| IdentifierInfo &name_identifier( |
| origin_iface_decl->getASTContext().Idents.get(name)); |
| |
| DeclFromUser<ObjCPropertyDecl> origin_property_decl( |
| origin_iface_decl->FindPropertyDeclaration( |
| &name_identifier, ObjCPropertyQueryKind::OBJC_PR_query_instance)); |
| |
| bool found = false; |
| |
| if (origin_property_decl.IsValid()) { |
| DeclFromParser<ObjCPropertyDecl> parser_property_decl( |
| origin_property_decl.Import(source)); |
| if (parser_property_decl.IsValid()) { |
| LLDB_LOG(log, " CAS::FOPD found\n{0}", |
| ClangUtil::DumpDecl(parser_property_decl.decl)); |
| |
| context.AddNamedDecl(parser_property_decl.decl); |
| found = true; |
| } |
| } |
| |
| DeclFromUser<ObjCIvarDecl> origin_ivar_decl( |
| origin_iface_decl->getIvarDecl(&name_identifier)); |
| |
| if (origin_ivar_decl.IsValid()) { |
| DeclFromParser<ObjCIvarDecl> parser_ivar_decl( |
| origin_ivar_decl.Import(source)); |
| if (parser_ivar_decl.IsValid()) { |
| LLDB_LOG(log, " CAS::FOPD found\n{0}", |
| ClangUtil::DumpDecl(parser_ivar_decl.decl)); |
| |
| context.AddNamedDecl(parser_ivar_decl.decl); |
| found = true; |
| } |
| } |
| |
| return found; |
| } |
| |
| void ClangASTSource::FindObjCPropertyAndIvarDecls(NameSearchContext &context) { |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| DeclFromParser<const ObjCInterfaceDecl> parser_iface_decl( |
| cast<ObjCInterfaceDecl>(context.m_decl_context)); |
| DeclFromUser<const ObjCInterfaceDecl> origin_iface_decl( |
| parser_iface_decl.GetOrigin(*this)); |
| |
| ConstString class_name(parser_iface_decl->getNameAsString().c_str()); |
| |
| LLDB_LOG(log, |
| "ClangASTSource::FindObjCPropertyAndIvarDecls on " |
| "(ASTContext*){0} '{1}' for '{2}.{3}'", |
| m_ast_context, m_clang_ast_context->getDisplayName(), |
| parser_iface_decl->getName(), context.m_decl_name.getAsString()); |
| |
| if (FindObjCPropertyAndIvarDeclsWithOrigin(context, *this, origin_iface_decl)) |
| return; |
| |
| LLDB_LOG(log, |
| "CAS::FOPD couldn't find the property on origin " |
| "(ObjCInterfaceDecl*){0}/(ASTContext*){1}, searching " |
| "elsewhere...", |
| origin_iface_decl.decl, &origin_iface_decl->getASTContext()); |
| |
| SymbolContext null_sc; |
| TypeList type_list; |
| |
| do { |
| ObjCInterfaceDecl *complete_interface_decl = GetCompleteObjCInterface( |
| const_cast<ObjCInterfaceDecl *>(parser_iface_decl.decl)); |
| |
| if (!complete_interface_decl) |
| break; |
| |
| // We found the complete interface. The runtime never needs to be queried |
| // in this scenario. |
| |
| DeclFromUser<const ObjCInterfaceDecl> complete_iface_decl( |
| complete_interface_decl); |
| |
| if (complete_iface_decl.decl == origin_iface_decl.decl) |
| break; // already checked this one |
| |
| LLDB_LOG(log, |
| "CAS::FOPD trying origin " |
| "(ObjCInterfaceDecl*){0}/(ASTContext*){1}...", |
| complete_iface_decl.decl, &complete_iface_decl->getASTContext()); |
| |
| FindObjCPropertyAndIvarDeclsWithOrigin(context, *this, complete_iface_decl); |
| |
| return; |
| } while (false); |
| |
| do { |
| // Check the modules only if the debug information didn't have a complete |
| // interface. |
| |
| std::shared_ptr<ClangModulesDeclVendor> modules_decl_vendor = |
| GetClangModulesDeclVendor(); |
| |
| if (!modules_decl_vendor) |
| break; |
| |
| bool append = false; |
| uint32_t max_matches = 1; |
| std::vector<clang::NamedDecl *> decls; |
| |
| if (!modules_decl_vendor->FindDecls(class_name, append, max_matches, decls)) |
| break; |
| |
| DeclFromUser<const ObjCInterfaceDecl> interface_decl_from_modules( |
| dyn_cast<ObjCInterfaceDecl>(decls[0])); |
| |
| if (!interface_decl_from_modules.IsValid()) |
| break; |
| |
| LLDB_LOG(log, |
| "CAS::FOPD[{0}] trying module " |
| "(ObjCInterfaceDecl*){0}/(ASTContext*){1}...", |
| interface_decl_from_modules.decl, |
| &interface_decl_from_modules->getASTContext()); |
| |
| if (FindObjCPropertyAndIvarDeclsWithOrigin(context, *this, |
| interface_decl_from_modules)) |
| return; |
| } while (false); |
| |
| do { |
| // Check the runtime only if the debug information didn't have a complete |
| // interface and nothing was in the modules. |
| |
| lldb::ProcessSP process(m_target->GetProcessSP()); |
| |
| if (!process) |
| return; |
| |
| ObjCLanguageRuntime *language_runtime(ObjCLanguageRuntime::Get(*process)); |
| |
| if (!language_runtime) |
| return; |
| |
| DeclVendor *decl_vendor = language_runtime->GetDeclVendor(); |
| |
| if (!decl_vendor) |
| break; |
| |
| bool append = false; |
| uint32_t max_matches = 1; |
| std::vector<clang::NamedDecl *> decls; |
| |
| auto *clang_decl_vendor = llvm::cast<ClangDeclVendor>(decl_vendor); |
| if (!clang_decl_vendor->FindDecls(class_name, append, max_matches, decls)) |
| break; |
| |
| DeclFromUser<const ObjCInterfaceDecl> interface_decl_from_runtime( |
| dyn_cast<ObjCInterfaceDecl>(decls[0])); |
| |
| if (!interface_decl_from_runtime.IsValid()) |
| break; |
| |
| LLDB_LOG(log, |
| "CAS::FOPD[{0}] trying runtime " |
| "(ObjCInterfaceDecl*){0}/(ASTContext*){1}...", |
| interface_decl_from_runtime.decl, |
| &interface_decl_from_runtime->getASTContext()); |
| |
| if (FindObjCPropertyAndIvarDeclsWithOrigin(context, *this, |
| interface_decl_from_runtime)) |
| return; |
| } while (false); |
| } |
| |
| void ClangASTSource::LookupInNamespace(NameSearchContext &context) { |
| const NamespaceDecl *namespace_context = |
| dyn_cast<NamespaceDecl>(context.m_decl_context); |
| |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| ClangASTImporter::NamespaceMapSP namespace_map = |
| m_ast_importer_sp->GetNamespaceMap(namespace_context); |
| |
| LLDB_LOGV(log, " CAS::FEVD Inspecting namespace map {0} ({1} entries)", |
| namespace_map.get(), namespace_map->size()); |
| |
| if (!namespace_map) |
| return; |
| |
| for (ClangASTImporter::NamespaceMap::iterator i = namespace_map->begin(), |
| e = namespace_map->end(); |
| i != e; ++i) { |
| LLDB_LOG(log, " CAS::FEVD Searching namespace {0} in module {1}", |
| i->second.GetName(), i->first->GetFileSpec().GetFilename()); |
| |
| FindExternalVisibleDecls(context, i->first, i->second); |
| } |
| } |
| |
| typedef llvm::DenseMap<const FieldDecl *, uint64_t> FieldOffsetMap; |
| typedef llvm::DenseMap<const CXXRecordDecl *, CharUnits> BaseOffsetMap; |
| |
| template <class D, class O> |
| static bool ImportOffsetMap(llvm::DenseMap<const D *, O> &destination_map, |
| llvm::DenseMap<const D *, O> &source_map, |
| ClangASTSource &source) { |
| // When importing fields into a new record, clang has a hard requirement that |
| // fields be imported in field offset order. Since they are stored in a |
| // DenseMap with a pointer as the key type, this means we cannot simply |
| // iterate over the map, as the order will be non-deterministic. Instead we |
| // have to sort by the offset and then insert in sorted order. |
| typedef llvm::DenseMap<const D *, O> MapType; |
| typedef typename MapType::value_type PairType; |
| std::vector<PairType> sorted_items; |
| sorted_items.reserve(source_map.size()); |
| sorted_items.assign(source_map.begin(), source_map.end()); |
| llvm::sort(sorted_items.begin(), sorted_items.end(), |
| [](const PairType &lhs, const PairType &rhs) { |
| return lhs.second < rhs.second; |
| }); |
| |
| for (const auto &item : sorted_items) { |
| DeclFromUser<D> user_decl(const_cast<D *>(item.first)); |
| DeclFromParser<D> parser_decl(user_decl.Import(source)); |
| if (parser_decl.IsInvalid()) |
| return false; |
| destination_map.insert( |
| std::pair<const D *, O>(parser_decl.decl, item.second)); |
| } |
| |
| return true; |
| } |
| |
| template <bool IsVirtual> |
| bool ExtractBaseOffsets(const ASTRecordLayout &record_layout, |
| DeclFromUser<const CXXRecordDecl> &record, |
| BaseOffsetMap &base_offsets) { |
| for (CXXRecordDecl::base_class_const_iterator |
| bi = (IsVirtual ? record->vbases_begin() : record->bases_begin()), |
| be = (IsVirtual ? record->vbases_end() : record->bases_end()); |
| bi != be; ++bi) { |
| if (!IsVirtual && bi->isVirtual()) |
| continue; |
| |
| const clang::Type *origin_base_type = bi->getType().getTypePtr(); |
| const clang::RecordType *origin_base_record_type = |
| origin_base_type->getAs<RecordType>(); |
| |
| if (!origin_base_record_type) |
| return false; |
| |
| DeclFromUser<RecordDecl> origin_base_record( |
| origin_base_record_type->getDecl()); |
| |
| if (origin_base_record.IsInvalid()) |
| return false; |
| |
| DeclFromUser<CXXRecordDecl> origin_base_cxx_record( |
| DynCast<CXXRecordDecl>(origin_base_record)); |
| |
| if (origin_base_cxx_record.IsInvalid()) |
| return false; |
| |
| CharUnits base_offset; |
| |
| if (IsVirtual) |
| base_offset = |
| record_layout.getVBaseClassOffset(origin_base_cxx_record.decl); |
| else |
| base_offset = |
| record_layout.getBaseClassOffset(origin_base_cxx_record.decl); |
| |
| base_offsets.insert(std::pair<const CXXRecordDecl *, CharUnits>( |
| origin_base_cxx_record.decl, base_offset)); |
| } |
| |
| return true; |
| } |
| |
| bool ClangASTSource::layoutRecordType(const RecordDecl *record, uint64_t &size, |
| uint64_t &alignment, |
| FieldOffsetMap &field_offsets, |
| BaseOffsetMap &base_offsets, |
| BaseOffsetMap &virtual_base_offsets) { |
| |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| LLDB_LOG(log, |
| "LayoutRecordType on (ASTContext*){0} '{1}' for (RecordDecl*)" |
| "{2} [name = '{3}']", |
| m_ast_context, m_clang_ast_context->getDisplayName(), record, |
| record->getName()); |
| |
| DeclFromParser<const RecordDecl> parser_record(record); |
| DeclFromUser<const RecordDecl> origin_record( |
| parser_record.GetOrigin(*this)); |
| |
| if (origin_record.IsInvalid()) |
| return false; |
| |
| FieldOffsetMap origin_field_offsets; |
| BaseOffsetMap origin_base_offsets; |
| BaseOffsetMap origin_virtual_base_offsets; |
| |
| TypeSystemClang::GetCompleteDecl( |
| &origin_record->getASTContext(), |
| const_cast<RecordDecl *>(origin_record.decl)); |
| |
| clang::RecordDecl *definition = origin_record.decl->getDefinition(); |
| if (!definition || !definition->isCompleteDefinition()) |
| return false; |
| |
| const ASTRecordLayout &record_layout( |
| origin_record->getASTContext().getASTRecordLayout(origin_record.decl)); |
| |
| int field_idx = 0, field_count = record_layout.getFieldCount(); |
| |
| for (RecordDecl::field_iterator fi = origin_record->field_begin(), |
| fe = origin_record->field_end(); |
| fi != fe; ++fi) { |
| if (field_idx >= field_count) |
| return false; // Layout didn't go well. Bail out. |
| |
| uint64_t field_offset = record_layout.getFieldOffset(field_idx); |
| |
| origin_field_offsets.insert( |
| std::pair<const FieldDecl *, uint64_t>(*fi, field_offset)); |
| |
| field_idx++; |
| } |
| |
| lldbassert(&record->getASTContext() == m_ast_context); |
| |
| DeclFromUser<const CXXRecordDecl> origin_cxx_record( |
| DynCast<const CXXRecordDecl>(origin_record)); |
| |
| if (origin_cxx_record.IsValid()) { |
| if (!ExtractBaseOffsets<false>(record_layout, origin_cxx_record, |
| origin_base_offsets) || |
| !ExtractBaseOffsets<true>(record_layout, origin_cxx_record, |
| origin_virtual_base_offsets)) |
| return false; |
| } |
| |
| if (!ImportOffsetMap(field_offsets, origin_field_offsets, *this) || |
| !ImportOffsetMap(base_offsets, origin_base_offsets, *this) || |
| !ImportOffsetMap(virtual_base_offsets, origin_virtual_base_offsets, |
| *this)) |
| return false; |
| |
| size = record_layout.getSize().getQuantity() * m_ast_context->getCharWidth(); |
| alignment = record_layout.getAlignment().getQuantity() * |
| m_ast_context->getCharWidth(); |
| |
| if (log) { |
| LLDB_LOG(log, "LRT returned:"); |
| LLDB_LOG(log, "LRT Original = (RecordDecl*){0}", |
| static_cast<const void *>(origin_record.decl)); |
| LLDB_LOG(log, "LRT Size = {0}", size); |
| LLDB_LOG(log, "LRT Alignment = {0}", alignment); |
| LLDB_LOG(log, "LRT Fields:"); |
| for (RecordDecl::field_iterator fi = record->field_begin(), |
| fe = record->field_end(); |
| fi != fe; ++fi) { |
| LLDB_LOG(log, |
| "LRT (FieldDecl*){0}, Name = '{1}', Type = '{2}', Offset = " |
| "{3} bits", |
| *fi, fi->getName(), fi->getType().getAsString(), |
| field_offsets[*fi]); |
| } |
| DeclFromParser<const CXXRecordDecl> parser_cxx_record = |
| DynCast<const CXXRecordDecl>(parser_record); |
| if (parser_cxx_record.IsValid()) { |
| LLDB_LOG(log, "LRT Bases:"); |
| for (CXXRecordDecl::base_class_const_iterator |
| bi = parser_cxx_record->bases_begin(), |
| be = parser_cxx_record->bases_end(); |
| bi != be; ++bi) { |
| bool is_virtual = bi->isVirtual(); |
| |
| QualType base_type = bi->getType(); |
| const RecordType *base_record_type = base_type->getAs<RecordType>(); |
| DeclFromParser<RecordDecl> base_record(base_record_type->getDecl()); |
| DeclFromParser<CXXRecordDecl> base_cxx_record = |
| DynCast<CXXRecordDecl>(base_record); |
| |
| LLDB_LOG(log, |
| "LRT {0}(CXXRecordDecl*){1}, Name = '{2}', Offset = " |
| "{3} chars", |
| (is_virtual ? "Virtual " : ""), base_cxx_record.decl, |
| base_cxx_record.decl->getName(), |
| (is_virtual |
| ? virtual_base_offsets[base_cxx_record.decl].getQuantity() |
| : base_offsets[base_cxx_record.decl].getQuantity())); |
| } |
| } else { |
| LLDB_LOG(log, "LRD Not a CXXRecord, so no bases"); |
| } |
| } |
| |
| return true; |
| } |
| |
| void ClangASTSource::CompleteNamespaceMap( |
| ClangASTImporter::NamespaceMapSP &namespace_map, ConstString name, |
| ClangASTImporter::NamespaceMapSP &parent_map) const { |
| |
| Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS)); |
| |
| if (log) { |
| if (parent_map && parent_map->size()) |
| LLDB_LOG(log, |
| "CompleteNamespaceMap on (ASTContext*){0} '{1}' Searching " |
| "for namespace {2} in namespace {3}", |
| m_ast_context, m_clang_ast_context->getDisplayName(), name, |
| parent_map->begin()->second.GetName()); |
| else |
| LLDB_LOG(log, |
| "CompleteNamespaceMap on (ASTContext*){0} '{1}' Searching " |
| "for namespace {2}", |
| m_ast_context, m_clang_ast_context->getDisplayName(), name); |
| } |
| |
| if (parent_map) { |
| for (ClangASTImporter::NamespaceMap::iterator i = parent_map->begin(), |
| e = parent_map->end(); |
| i != e; ++i) { |
| CompilerDeclContext found_namespace_decl; |
| |
| lldb::ModuleSP module_sp = i->first; |
| CompilerDeclContext module_parent_namespace_decl = i->second; |
| |
| SymbolFile *symbol_file = module_sp->GetSymbolFile(); |
| |
| if (!symbol_file) |
| continue; |
| |
| found_namespace_decl = |
| symbol_file->FindNamespace(name, module_parent_namespace_decl); |
| |
| if (!found_namespace_decl) |
| continue; |
| |
| namespace_map->push_back(std::pair<lldb::ModuleSP, CompilerDeclContext>( |
| module_sp, found_namespace_decl)); |
| |
| LLDB_LOG(log, " CMN Found namespace {0} in module {1}", name, |
| module_sp->GetFileSpec().GetFilename()); |
| } |
| } else { |
| CompilerDeclContext null_namespace_decl; |
| for (lldb::ModuleSP image : m_target->GetImages().Modules()) { |
| if (!image) |
| continue; |
| |
| CompilerDeclContext found_namespace_decl; |
| |
| SymbolFile *symbol_file = image->GetSymbolFile(); |
| |
| if (!symbol_file) |
| continue; |
| |
| found_namespace_decl = |
| symbol_file->FindNamespace(name, null_namespace_decl); |
| |
| if (!found_namespace_decl) |
| continue; |
| |
| namespace_map->push_back(std::pair<lldb::ModuleSP, CompilerDeclContext>( |
| image, found_namespace_decl)); |
| |
| LLDB_LOG(log, " CMN[{0}] Found namespace {0} in module {1}", name, |
| image->GetFileSpec().GetFilename()); |
| } |
| } |
| } |
| |
| NamespaceDecl *ClangASTSource::AddNamespace( |
| NameSearchContext &context, |
| ClangASTImporter::NamespaceMapSP &namespace_decls) { |
| if (!namespace_decls) |
| return nullptr; |
| |
| const CompilerDeclContext &namespace_decl = namespace_decls->begin()->second; |
| |
| clang::ASTContext *src_ast = |
| TypeSystemClang::DeclContextGetTypeSystemClang(namespace_decl); |
| if (!src_ast) |
| return nullptr; |
| clang::NamespaceDecl *src_namespace_decl = |
| TypeSystemClang::DeclContextGetAsNamespaceDecl(namespace_decl); |
| |
| if (!src_namespace_decl) |
| return nullptr; |
| |
| Decl *copied_decl = CopyDecl(src_namespace_decl); |
| |
| if (!copied_decl) |
| return nullptr; |
| |
| NamespaceDecl *copied_namespace_decl = dyn_cast<NamespaceDecl>(copied_decl); |
| |
| if (!copied_namespace_decl) |
| return nullptr; |
| |
| context.m_decls.push_back(copied_namespace_decl); |
| |
| m_ast_importer_sp->RegisterNamespaceMap(copied_namespace_decl, |
| namespace_decls); |
| |
| return dyn_cast<NamespaceDecl>(copied_decl); |
| } |
| |
| clang::Decl *ClangASTSource::CopyDecl(Decl *src_decl) { |
| return m_ast_importer_sp->CopyDecl(m_ast_context, src_decl); |
| } |
| |
| ClangASTImporter::DeclOrigin ClangASTSource::GetDeclOrigin(const clang::Decl *decl) { |
| return m_ast_importer_sp->GetDeclOrigin(decl); |
| } |
| |
| CompilerType ClangASTSource::GuardedCopyType(const CompilerType &src_type) { |
| TypeSystemClang *src_ast = |
| llvm::dyn_cast_or_null<TypeSystemClang>(src_type.GetTypeSystem()); |
| if (src_ast == nullptr) |
| return CompilerType(); |
| |
| QualType copied_qual_type = ClangUtil::GetQualType( |
| m_ast_importer_sp->CopyType(*m_clang_ast_context, src_type)); |
| |
| if (copied_qual_type.getAsOpaquePtr() && |
| copied_qual_type->getCanonicalTypeInternal().isNull()) |
| // this shouldn't happen, but we're hardening because the AST importer |
| // seems to be generating bad types on occasion. |
| return CompilerType(); |
| |
| return m_clang_ast_context->GetType(copied_qual_type); |
| } |
| |
| std::shared_ptr<ClangModulesDeclVendor> |
| ClangASTSource::GetClangModulesDeclVendor() { |
| auto persistent_vars = llvm::cast<ClangPersistentVariables>( |
| m_target->GetPersistentExpressionStateForLanguage(lldb::eLanguageTypeC)); |
| return persistent_vars->GetClangModulesDeclVendor(); |
| } |
