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//===-- MsvcStlAtomic.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 "MsvcStl.h"
#include "lldb/DataFormatters/TypeSynthetic.h"
using namespace lldb;
namespace lldb_private {
namespace formatters {
class MsvcStlAtomicSyntheticFrontEnd : public SyntheticChildrenFrontEnd {
public:
MsvcStlAtomicSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp);
llvm::Expected<uint32_t> CalculateNumChildren() override;
lldb::ValueObjectSP GetChildAtIndex(uint32_t idx) override;
lldb::ChildCacheState Update() override;
llvm::Expected<size_t> GetIndexOfChildWithName(ConstString name) override;
private:
ValueObject *m_storage = nullptr;
CompilerType m_element_type;
};
} // namespace formatters
} // namespace lldb_private
lldb_private::formatters::MsvcStlAtomicSyntheticFrontEnd::
MsvcStlAtomicSyntheticFrontEnd(lldb::ValueObjectSP valobj_sp)
: SyntheticChildrenFrontEnd(*valobj_sp), m_element_type() {
if (valobj_sp)
Update();
}
llvm::Expected<uint32_t> lldb_private::formatters::
MsvcStlAtomicSyntheticFrontEnd::CalculateNumChildren() {
return m_storage ? 1 : 0;
}
lldb::ValueObjectSP
lldb_private::formatters::MsvcStlAtomicSyntheticFrontEnd::GetChildAtIndex(
uint32_t idx) {
if (idx == 0)
return m_storage->Cast(m_element_type)->Clone(ConstString("Value"));
return nullptr;
}
lldb::ChildCacheState
lldb_private::formatters::MsvcStlAtomicSyntheticFrontEnd::Update() {
m_storage = nullptr;
m_element_type.Clear();
ValueObjectSP storage_sp = m_backend.GetChildMemberWithName("_Storage");
if (!storage_sp)
return lldb::ChildCacheState::eRefetch;
m_element_type = m_backend.GetCompilerType().GetTypeTemplateArgument(0);
if (!m_element_type)
return lldb::ChildCacheState::eRefetch;
m_storage = storage_sp.get();
return lldb::ChildCacheState::eRefetch;
}
llvm::Expected<size_t> lldb_private::formatters::
MsvcStlAtomicSyntheticFrontEnd::GetIndexOfChildWithName(ConstString name) {
if (name == "Value")
return 0;
return llvm::createStringError("Type has no child named '%s'",
name.AsCString());
}
lldb_private::SyntheticChildrenFrontEnd *
lldb_private::formatters::MsvcStlAtomicSyntheticFrontEndCreator(
CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) {
return new MsvcStlAtomicSyntheticFrontEnd(valobj_sp);
}
bool lldb_private::formatters::MsvcStlAtomicSummaryProvider(
ValueObject &valobj, Stream &stream, const TypeSummaryOptions &options) {
auto synth_sp = valobj.GetSyntheticValue();
if (!synth_sp)
return false;
auto value_sp = synth_sp->GetChildAtIndex(0);
std::string summary;
if (value_sp->GetSummaryAsCString(summary, options) && !summary.empty()) {
stream << summary;
return true;
}
return false;
}
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