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v811_spc009/external/llvm-project/lldb/source/Plugins/ExpressionParser/Clang/ClangASTSource.cpp

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//===-- 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;
// We are in the process of destruction, don't create clang ast context on
// demand by passing false to
// Target::GetScratchTypeSystemClang(create_on_demand).
TypeSystemClang *scratch_clang_ast_context =
ScratchTypeSystemClang::GetForTarget(*m_target, false);
if (!scratch_clang_ast_context)
return;
clang::ASTContext &scratch_ast_context =
scratch_clang_ast_context->getASTContext();
if (m_ast_context != &scratch_ast_context && m_ast_importer_sp)
m_ast_importer_sp->ForgetSource(&scratch_ast_context, m_ast_context);
}
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;
}
const ModuleList &target_images = m_target->GetImages();
std::lock_guard<std::recursive_mutex> guard(target_images.GetMutex());
for (size_t i = 0, e = target_images.GetSize(); i < e; ++i) {
lldb::ModuleSP image = target_images.GetModuleAtIndexUnlocked(i);
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));
ClangModulesDeclVendor *modules_decl_vendor =
m_target->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;
const bool include_symbols = false;
const bool 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, include_symbols,
include_inlines, 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, include_symbols,
include_inlines, 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, include_symbols,
include_inlines, 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 (ClangModulesDeclVendor *modules_decl_vendor =
m_target->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.
ClangModulesDeclVendor *modules_decl_vendor =
m_target->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*)"
"{3} [name = '{4}']",
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*)%p",
static_cast<const void *>(origin_record.decl));
LLDB_LOG(log, "LRT Size = %" PRId64, size);
LLDB_LOG(log, "LRT Alignment = %" PRId64, 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}', Offset = {2} bits",
*fi, fi->getName(), 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 {
const ModuleList &target_images = m_target->GetImages();
std::lock_guard<std::recursive_mutex> guard(target_images.GetMutex());
CompilerDeclContext null_namespace_decl;
for (size_t i = 0, e = target_images.GetSize(); i < e; ++i) {
lldb::ModuleSP image = target_images.GetModuleAtIndexUnlocked(i);
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);
}
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