llvm/lldb/source/Plugins/Language/CPlusPlus/LibCxxProxyArray.cpp

//===-- LibCxxProxyArray.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 "LibCxx.h"

#include "lldb/Core/ValueObject.h"
#include "lldb/DataFormatters/FormattersHelpers.h"
#include <optional>

usingnamespacelldb;
usingnamespacelldb_private;
usingnamespacelldb_private::formatters;

namespace lldb_private {
namespace formatters {

/// Data formatter for libc++'s std::"proxy_array".
///
/// A proxy_array's are created by using:
///   std::gslice_array   operator[](const std::gslice& gslicearr);
///   std::mask_array     operator[](const std::valarray<bool>& boolarr);
///   std::indirect_array operator[](const std::valarray<std::size_t>& indarr);
///
/// These arrays have the following members:
/// - __vp_ points to std::valarray::__begin_
/// - __1d_ an array of offsets of the elements from @a __vp_
class LibcxxStdProxyArraySyntheticFrontEnd : public SyntheticChildrenFrontEnd { … };

} // namespace formatters
} // namespace lldb_private

lldb_private::formatters::LibcxxStdProxyArraySyntheticFrontEnd::
    LibcxxStdProxyArraySyntheticFrontEnd(lldb::ValueObjectSP valobj_sp)
    : … { … }

lldb_private::formatters::LibcxxStdProxyArraySyntheticFrontEnd::
    ~LibcxxStdProxyArraySyntheticFrontEnd() { … }

llvm::Expected<uint32_t> lldb_private::formatters::
    LibcxxStdProxyArraySyntheticFrontEnd::CalculateNumChildren() { … }

lldb::ValueObjectSP
lldb_private::formatters::LibcxxStdProxyArraySyntheticFrontEnd::GetChildAtIndex(
    uint32_t idx) { … }

lldb::ChildCacheState
lldb_private::formatters::LibcxxStdProxyArraySyntheticFrontEnd::Update() { … }

bool lldb_private::formatters::LibcxxStdProxyArraySyntheticFrontEnd::
    MightHaveChildren() { … }

size_t lldb_private::formatters::LibcxxStdProxyArraySyntheticFrontEnd::
    GetIndexOfChildWithName(ConstString name) { … }

lldb_private::SyntheticChildrenFrontEnd *
lldb_private::formatters::LibcxxStdProxyArraySyntheticFrontEndCreator(
    CXXSyntheticChildren *, lldb::ValueObjectSP valobj_sp) { … }