BlockPointerSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp)
: SyntheticChildrenFrontEnd(*valobj_sp),
m_block_struct_type()
{
CompilerType block_pointer_type(m_backend.GetCompilerType());
CompilerType function_pointer_type;
block_pointer_type.IsBlockPointerType(&function_pointer_type);
TargetSP target_sp(m_backend.GetTargetSP());
if (!target_sp)
{
return;
}
Error err;
TypeSystem *type_system = target_sp->GetScratchTypeSystemForLanguage(&err, lldb::eLanguageTypeC_plus_plus);
if (!err.Success() || !type_system)
{
return;
}
ClangASTContext *clang_ast_context = llvm::dyn_cast<ClangASTContext>(type_system);
if (!clang_ast_context)
{
return;
}
ClangASTImporterSP clang_ast_importer = target_sp->GetClangASTImporter();
if (!clang_ast_importer)
{
return;
}
const char *const isa_name("__isa");
const CompilerType isa_type = clang_ast_context->GetBasicType(lldb::eBasicTypeObjCClass);
const char *const flags_name("__flags");
const CompilerType flags_type = clang_ast_context->GetBasicType(lldb::eBasicTypeInt);
const char *const reserved_name("__reserved");
const CompilerType reserved_type = clang_ast_context->GetBasicType(lldb::eBasicTypeInt);
const char *const FuncPtr_name("__FuncPtr");
const CompilerType FuncPtr_type = clang_ast_importer->CopyType(*clang_ast_context, function_pointer_type);
m_block_struct_type = clang_ast_context->CreateStructForIdentifier(ConstString(),
{
{isa_name, isa_type},
{flags_name, flags_type},
{reserved_name, reserved_type},
{FuncPtr_name, FuncPtr_type}
});
}
virtual bool
Update()
{
m_parent_format = m_backend.GetFormat();
CompilerType parent_type(m_backend.GetCompilerType());
CompilerType element_type;
parent_type.IsVectorType(&element_type, nullptr);
TargetSP target_sp(m_backend.GetTargetSP());
m_child_type = ::GetCompilerTypeForFormat(m_parent_format,
element_type,
target_sp ? target_sp->GetScratchTypeSystemForLanguage(nullptr, lldb::eLanguageTypeC) : nullptr);
m_num_children = ::CalculateNumChildren(parent_type,
m_child_type);
m_item_format = GetItemFormatForFormat(m_parent_format,
m_child_type);
return false;
}
