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//===-- DIERef.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 "DIERef.h"
#include "lldb/Utility/DataEncoder.h"
#include "lldb/Utility/DataExtractor.h"
#include "llvm/Support/Format.h"
#include <optional>
using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::plugin::dwarf;
void llvm::format_provider<DIERef>::format(const DIERef &ref, raw_ostream &OS,
StringRef Style) {
if (ref.file_index())
OS << format_hex_no_prefix(*ref.file_index(), 8) << "/";
OS << (ref.section() == DIERef::DebugInfo ? "INFO" : "TYPE");
OS << "/" << format_hex_no_prefix(ref.die_offset(), 8);
}
std::optional<DIERef> DIERef::Decode(const DataExtractor &data,
lldb::offset_t *offset_ptr) {
DIERef die_ref(data.GetU64(offset_ptr));
// DIE offsets can't be zero and if we fail to decode something from data,
// it will return 0
if (!die_ref.die_offset())
return std::nullopt;
return die_ref;
}
void DIERef::Encode(DataEncoder &encoder) const { encoder.AppendU64(get_id()); }
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