1 //===- llvm/TextAPI/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_PACKEDVERSION_H
14 #define LLVM_TEXTAPI_PACKEDVERSION_H
15 
16 #include <cstdint>
17 #include <string>
18 #include <utility>
19 
20 namespace llvm {
21 class raw_ostream;
22 class StringRef;
23 
24 namespace MachO {
25 
26 class PackedVersion {
27   uint32_t Version{0};
28 
29 public:
30   constexpr PackedVersion() = default;
31   explicit constexpr PackedVersion(uint32_t RawVersion) : Version(RawVersion) {}
32   PackedVersion(unsigned Major, unsigned Minor, unsigned Subminor)
33       : Version((Major << 16) | ((Minor & 0xff) << 8) | (Subminor & 0xff)) {}
34 
35   bool empty() const { return Version == 0; }
36 
37   /// Retrieve the major version number.
38   unsigned getMajor() const { return Version >> 16; }
39 
40   /// Retrieve the minor version number, if provided.
41   unsigned getMinor() const { return (Version >> 8) & 0xff; }
42 
43   /// Retrieve the subminor version number, if provided.
44   unsigned getSubminor() const { return Version & 0xff; }
45 
46   bool parse32(StringRef Str);
47   std::pair<bool, bool> parse64(StringRef Str);
48 
49   bool operator<(const PackedVersion &O) const { return Version < O.Version; }
50 
51   bool operator==(const PackedVersion &O) const { return Version == O.Version; }
52 
53   bool operator!=(const PackedVersion &O) const { return Version != O.Version; }
54 
55   uint32_t rawValue() const { return Version; }
56 
57   operator std::string() const;
58 
59   void print(raw_ostream &OS) const;
60 };
61 
62 inline raw_ostream &operator<<(raw_ostream &OS, const PackedVersion &Version) {
63   Version.print(OS);
64   return OS;
65 }
66 
67 } // end namespace MachO.
68 } // end namespace llvm.
69 
70 #endif // LLVM_TEXTAPI_PACKEDVERSION_H
71