1 //===- llvm/TextAPI/MachO/PackedVersion.h - PackedVersion -------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // Defines the Mach-O packed version format.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_TEXTAPI_MACHO_PACKED_VERSION_H
14 #define LLVM_TEXTAPI_MACHO_PACKED_VERSION_H
15 
16 #include "llvm/ADT/StringRef.h"
17 #include "llvm/Support/raw_ostream.h"
18 
19 namespace llvm {
20 namespace MachO {
21 
22 class PackedVersion {
23   uint32_t Version{0};
24 
25 public:
26   constexpr PackedVersion() = default;
PackedVersion(uint32_t RawVersion)27   explicit constexpr PackedVersion(uint32_t RawVersion) : Version(RawVersion) {}
PackedVersion(unsigned Major,unsigned Minor,unsigned Subminor)28   PackedVersion(unsigned Major, unsigned Minor, unsigned Subminor)
29       : Version((Major << 16) | ((Minor & 0xff) << 8) | (Subminor & 0xff)) {}
30 
empty()31   bool empty() const { return Version == 0; }
32 
33   /// Retrieve the major version number.
getMajor()34   unsigned getMajor() const { return Version >> 16; }
35 
36   /// Retrieve the minor version number, if provided.
getMinor()37   unsigned getMinor() const { return (Version >> 8) & 0xff; }
38 
39   /// Retrieve the subminor version number, if provided.
getSubminor()40   unsigned getSubminor() const { return Version & 0xff; }
41 
42   bool parse32(StringRef Str);
43   std::pair<bool, bool> parse64(StringRef Str);
44 
45   bool operator<(const PackedVersion &O) const { return Version < O.Version; }
46 
47   bool operator==(const PackedVersion &O) const { return Version == O.Version; }
48 
49   bool operator!=(const PackedVersion &O) const { return Version != O.Version; }
50 
rawValue()51   uint32_t rawValue() const { return Version; }
52 
53   void print(raw_ostream &OS) const;
54 };
55 
56 inline raw_ostream &operator<<(raw_ostream &OS, const PackedVersion &Version) {
57   Version.print(OS);
58   return OS;
59 }
60 
61 } // end namespace MachO.
62 } // end namespace llvm.
63 
64 #endif // LLVM_TEXTAPI_MACHO_PACKED_VERSION_H
65