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//===- DWARFDebugInfoEntry.h ------------------------------------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_DEBUGINFO_DWARFDEBUGINFOENTRY_H
#define LLVM_DEBUGINFO_DWARFDEBUGINFOENTRY_H
#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/DebugInfo/DWARF/DWARFAbbreviationDeclaration.h"
#include "llvm/DebugInfo/DWARF/DWARFDataExtractor.h"
#include <cstdint>
namespace llvm {
class DataExtractor;
class DWARFUnit;
/// DWARFDebugInfoEntry - A DIE with only the minimum required data.
class DWARFDebugInfoEntry {
/// Offset within the .debug_info of the start of this entry.
uint32_t Offset = 0;
/// The integer depth of this DIE within the compile unit DIEs where the
/// compile/type unit DIE has a depth of zero.
uint32_t Depth = 0;
const DWARFAbbreviationDeclaration *AbbrevDecl = nullptr;
public:
DWARFDebugInfoEntry() = default;
/// Extracts a debug info entry, which is a child of a given unit,
/// starting at a given offset. If DIE can't be extracted, returns false and
/// doesn't change OffsetPtr.
bool extractFast(const DWARFUnit &U, uint32_t *OffsetPtr);
/// High performance extraction should use this call.
bool extractFast(const DWARFUnit &U, uint32_t *OffsetPtr,
const DWARFDataExtractor &DebugInfoData, uint32_t UEndOffset,
uint32_t Depth);
uint32_t getOffset() const { return Offset; }
uint32_t getDepth() const { return Depth; }
dwarf::Tag getTag() const {
return AbbrevDecl ? AbbrevDecl->getTag() : dwarf::DW_TAG_null;
}
bool hasChildren() const { return AbbrevDecl && AbbrevDecl->hasChildren(); }
const DWARFAbbreviationDeclaration *getAbbreviationDeclarationPtr() const {
return AbbrevDecl;
}
};
} // end namespace llvm
#endif // LLVM_DEBUGINFO_DWARFDEBUGINFOENTRY_H
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