Subversion Repositories QNX 8.QNX8 LLVM/Clang compiler suite

//===- DWARFDebugAbbrev.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_DWARF_DWARFDEBUGABBREV_H

#define LLVM_DEBUGINFO_DWARF_DWARFDEBUGABBREV_H

#include "llvm/DebugInfo/DWARF/DWARFAbbreviationDeclaration.h"

#include "llvm/Support/DataExtractor.h"

#include <cstdint>

#include <map>

#include <vector>

namespace llvm {

class raw_ostream;

class DWARFAbbreviationDeclarationSet {

  uint64_t Offset;

  /// Code of the first abbreviation, if all abbreviations in the set have

  /// consecutive codes. UINT32_MAX otherwise.

  uint32_t FirstAbbrCode;

  std::vector<DWARFAbbreviationDeclaration> Decls;

  using const_iterator =

      std::vector<DWARFAbbreviationDeclaration>::const_iterator;

public:

  DWARFAbbreviationDeclarationSet();

  uint64_t getOffset() const { return Offset; }

  void dump(raw_ostream &OS) const;

  bool extract(DataExtractor Data, uint64_t *OffsetPtr);

  const DWARFAbbreviationDeclaration *

  getAbbreviationDeclaration(uint32_t AbbrCode) const;

  const_iterator begin() const {

    return Decls.begin();

  }

  const_iterator end() const {

    return Decls.end();

  }

  std::string getCodeRange() const;

private:

  void clear();

};

class DWARFDebugAbbrev {

  using DWARFAbbreviationDeclarationSetMap =

      std::map<uint64_t, DWARFAbbreviationDeclarationSet>;

  mutable DWARFAbbreviationDeclarationSetMap AbbrDeclSets;

  mutable DWARFAbbreviationDeclarationSetMap::const_iterator PrevAbbrOffsetPos;

  mutable std::optional<DataExtractor> Data;

public:

  DWARFDebugAbbrev();

  const DWARFAbbreviationDeclarationSet *

  getAbbreviationDeclarationSet(uint64_t CUAbbrOffset) const;

  void dump(raw_ostream &OS) const;

  void parse() const;

  void extract(DataExtractor Data);

  DWARFAbbreviationDeclarationSetMap::const_iterator begin() const {

    parse();

    return AbbrDeclSets.begin();

  }

  DWARFAbbreviationDeclarationSetMap::const_iterator end() const {

    return AbbrDeclSets.end();

  }

private:

  void clear();

};

} // end namespace llvm

#endif // LLVM_DEBUGINFO_DWARF_DWARFDEBUGABBREV_H