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