1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
|
//===- VersionTuple.h - Version Number Handling -----------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This header defines the VersionTuple class, which represents a version in
// the form major[.minor[.subminor]].
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_BASIC_VERSIONTUPLE_H
#define LLVM_CLANG_BASIC_VERSIONTUPLE_H
#include "clang/Basic/LLVM.h"
#include "llvm/ADT/Optional.h"
#include <string>
namespace clang {
/// \brief Represents a version number in the form major[.minor[.subminor]].
class VersionTuple {
unsigned Major;
unsigned Minor : 31;
unsigned Subminor : 31;
unsigned HasMinor : 1;
unsigned HasSubminor : 1;
public:
VersionTuple()
: Major(0), Minor(0), Subminor(0), HasMinor(false), HasSubminor(false) { }
explicit VersionTuple(unsigned Major)
: Major(Major), Minor(0), Subminor(0), HasMinor(false), HasSubminor(false)
{ }
explicit VersionTuple(unsigned Major, unsigned Minor)
: Major(Major), Minor(Minor), Subminor(0), HasMinor(true),
HasSubminor(false)
{ }
explicit VersionTuple(unsigned Major, unsigned Minor, unsigned Subminor)
: Major(Major), Minor(Minor), Subminor(Subminor), HasMinor(true),
HasSubminor(true)
{ }
/// \brief Determine whether this version information is empty
/// (e.g., all version components are zero).
bool empty() const { return Major == 0 && Minor == 0 && Subminor == 0; }
/// \brief Retrieve the major version number.
unsigned getMajor() const { return Major; }
/// \brief Retrieve the minor version number, if provided.
llvm::Optional<unsigned> getMinor() const {
if (!HasMinor)
return llvm::Optional<unsigned>();
return Minor;
}
/// \brief Retrieve the subminor version number, if provided.
llvm::Optional<unsigned> getSubminor() const {
if (!HasSubminor)
return llvm::Optional<unsigned>();
return Subminor;
}
/// \brief Determine if two version numbers are equivalent. If not
/// provided, minor and subminor version numbers are considered to be zero.
friend bool operator==(const VersionTuple& X, const VersionTuple &Y) {
return X.Major == Y.Major && X.Minor == Y.Minor && X.Subminor == Y.Subminor;
}
/// \brief Determine if two version numbers are not equivalent. If
/// not provided, minor and subminor version numbers are considered to be
/// zero.
friend bool operator!=(const VersionTuple &X, const VersionTuple &Y) {
return !(X == Y);
}
/// \brief Determine whether one version number precedes another. If not
/// provided, minor and subminor version numbers are considered to be zero.
friend bool operator<(const VersionTuple &X, const VersionTuple &Y) {
if (X.Major != Y.Major)
return X.Major < Y.Major;
if (X.Minor != Y.Minor)
return X.Minor < Y.Minor;
return X.Subminor < Y.Subminor;
}
/// \brief Determine whether one version number follows another. If not
/// provided, minor and subminor version numbers are considered to be zero.
friend bool operator>(const VersionTuple &X, const VersionTuple &Y) {
return Y < X;
}
/// \brief Determine whether one version number precedes or is
/// equivalent to another. If not provided, minor and subminor
/// version numbers are considered to be zero.
friend bool operator<=(const VersionTuple &X, const VersionTuple &Y) {
return !(Y < X);
}
/// \brief Determine whether one version number follows or is
/// equivalent to another. If not provided, minor and subminor
/// version numbers are considered to be zero.
friend bool operator>=(const VersionTuple &X, const VersionTuple &Y) {
return !(X < Y);
}
/// \brief Retrieve a string representation of the version number/
std::string getAsString() const;
/// \brief Try to parse the given string as a version number.
/// Returns true if the string does not match the regular expression
/// [0-9]+(\.[0-9]+(\.[0-9]+))
bool tryParse(StringRef string);
};
/// \brief Print a version number.
raw_ostream& operator<<(raw_ostream &Out, const VersionTuple &V);
} // end namespace clang
#endif // LLVM_CLANG_BASIC_VERSIONTUPLE_H
|
