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Dir : ~/usr/include/llvm/TextAPI/

View File Name : PackedVersion.h

//===- llvm/TextAPI/PackedVersion.h - PackedVersion -------------*- 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
//
//===----------------------------------------------------------------------===//
//
// Defines the Mach-O packed version format.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_TEXTAPI_PACKEDVERSION_H
#define LLVM_TEXTAPI_PACKEDVERSION_H

#include "llvm/Support/VersionTuple.h"
#include <cstdint>
#include <string>
#include <utility>

namespace llvm {
class raw_ostream;
class StringRef;

namespace MachO {

class PackedVersion {
  uint32_t Version{0};

public:
  constexpr PackedVersion() = default;
  constexpr PackedVersion(uint32_t RawVersion) : Version(RawVersion) {}
  PackedVersion(unsigned Major, unsigned Minor, unsigned Subminor)
      : Version((Major << 16) | ((Minor & 0xff) << 8) | (Subminor & 0xff)) {}

  PackedVersion(VersionTuple VT) {
    unsigned Minor = 0, Subminor = 0;
    if (auto VTMinor = VT.getMinor())
      Minor = *VTMinor;
    if (auto VTSub = VT.getSubminor())
      Subminor = *VTSub;
    *this = PackedVersion(VT.getMajor(), Minor, Subminor);
  }

  bool empty() const { return Version == 0; }

  /// Retrieve the major version number.
  unsigned getMajor() const { return Version >> 16; }

  /// Retrieve the minor version number, if provided.
  unsigned getMinor() const { return (Version >> 8) & 0xff; }

  /// Retrieve the subminor version number, if provided.
  unsigned getSubminor() const { return Version & 0xff; }

  bool parse32(StringRef Str);
  std::pair<bool, bool> parse64(StringRef Str);

  bool operator<(const PackedVersion &O) const { return Version < O.Version; }

  bool operator==(const PackedVersion &O) const { return Version == O.Version; }

  bool operator!=(const PackedVersion &O) const { return Version != O.Version; }

  uint32_t rawValue() const { return Version; }

  operator std::string() const;

  void print(raw_ostream &OS) const;
};

inline raw_ostream &operator<<(raw_ostream &OS, const PackedVersion &Version) {
  Version.print(OS);
  return OS;
}

} // end namespace MachO.
} // end namespace llvm.

#endif // LLVM_TEXTAPI_PACKEDVERSION_H