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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
#pragma once
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
//===- VersionTuple.h - Version Number Handling -----------------*- 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
//
//===----------------------------------------------------------------------===//
///
/// \file
/// Defines the llvm::VersionTuple class, which represents a version in
/// the form major[.minor[.subminor]].
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_SUPPORT_VERSIONTUPLE_H
#define LLVM_SUPPORT_VERSIONTUPLE_H
#include "llvm/ADT/DenseMapInfo.h"
#include "llvm/ADT/Hashing.h"
#include "llvm/ADT/Optional.h"
#include "llvm/Support/HashBuilder.h"
#include <string>
#include <tuple>
namespace llvm {
class raw_ostream;
class StringRef;
/// Represents a version number in the form major[.minor[.subminor[.build]]].
class VersionTuple {
unsigned Major : 32;
unsigned Minor : 31;
unsigned HasMinor : 1;
unsigned Subminor : 31;
unsigned HasSubminor : 1;
unsigned Build : 31;
unsigned HasBuild : 1;
public:
VersionTuple()
: Major(0), Minor(0), HasMinor(false), Subminor(0), HasSubminor(false),
Build(0), HasBuild(false) {}
explicit VersionTuple(unsigned Major)
: Major(Major), Minor(0), HasMinor(false), Subminor(0),
HasSubminor(false), Build(0), HasBuild(false) {}
explicit VersionTuple(unsigned Major, unsigned Minor)
: Major(Major), Minor(Minor), HasMinor(true), Subminor(0),
HasSubminor(false), Build(0), HasBuild(false) {}
explicit VersionTuple(unsigned Major, unsigned Minor, unsigned Subminor)
: Major(Major), Minor(Minor), HasMinor(true), Subminor(Subminor),
HasSubminor(true), Build(0), HasBuild(false) {}
explicit VersionTuple(unsigned Major, unsigned Minor, unsigned Subminor,
unsigned Build)
: Major(Major), Minor(Minor), HasMinor(true), Subminor(Subminor),
HasSubminor(true), Build(Build), HasBuild(true) {}
/// Determine whether this version information is empty
/// (e.g., all version components are zero).
bool empty() const {
return Major == 0 && Minor == 0 && Subminor == 0 && Build == 0;
}
/// Retrieve the major version number.
unsigned getMajor() const { return Major; }
/// Retrieve the minor version number, if provided.
Optional<unsigned> getMinor() const {
if (!HasMinor)
return None;
return Minor;
}
/// Retrieve the subminor version number, if provided.
Optional<unsigned> getSubminor() const {
if (!HasSubminor)
return None;
return Subminor;
}
/// Retrieve the build version number, if provided.
Optional<unsigned> getBuild() const {
if (!HasBuild)
return None;
return Build;
}
/// Return a version tuple that contains only the first 3 version components.
VersionTuple withoutBuild() const {
if (HasBuild)
return VersionTuple(Major, Minor, Subminor);
return *this;
}
/// Return a version tuple that contains only components that are non-zero.
VersionTuple normalize() const {
VersionTuple Result = *this;
if (Result.Build == 0) {
Result.HasBuild = false;
if (Result.Subminor == 0) {
Result.HasSubminor = false;
if (Result.Minor == 0)
Result.HasMinor = false;
}
}
return Result;
}
/// 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 && X.Build == Y.Build;
}
/// 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);
}
/// 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) {
return std::tie(X.Major, X.Minor, X.Subminor, X.Build) <
std::tie(Y.Major, Y.Minor, Y.Subminor, Y.Build);
}
/// 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;
}
/// 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);
}
/// 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);
}
friend llvm::hash_code hash_value(const VersionTuple &VT) {
return llvm::hash_combine(VT.Major, VT.Minor, VT.Subminor, VT.Build);
}
template <typename HasherT, llvm::support::endianness Endianness>
friend void addHash(HashBuilderImpl<HasherT, Endianness> &HBuilder,
const VersionTuple &VT) {
HBuilder.add(VT.Major, VT.Minor, VT.Subminor, VT.Build);
}
/// Retrieve a string representation of the version number.
std::string getAsString() const;
/// Try to parse the given string as a version number.
/// \returns \c true if the string does not match the regular expression
/// [0-9]+(\.[0-9]+){0,3}
bool tryParse(StringRef string);
};
/// Print a version number.
raw_ostream &operator<<(raw_ostream &Out, const VersionTuple &V);
// Provide DenseMapInfo for version tuples.
template <> struct DenseMapInfo<VersionTuple> {
static inline VersionTuple getEmptyKey() { return VersionTuple(0x7FFFFFFF); }
static inline VersionTuple getTombstoneKey() {
return VersionTuple(0x7FFFFFFE);
}
static unsigned getHashValue(const VersionTuple &Value) {
unsigned Result = Value.getMajor();
if (auto Minor = Value.getMinor())
Result = detail::combineHashValue(Result, *Minor);
if (auto Subminor = Value.getSubminor())
Result = detail::combineHashValue(Result, *Subminor);
if (auto Build = Value.getBuild())
Result = detail::combineHashValue(Result, *Build);
return Result;
}
static bool isEqual(const VersionTuple &LHS, const VersionTuple &RHS) {
return LHS == RHS;
}
};
} // end namespace llvm
#endif // LLVM_SUPPORT_VERSIONTUPLE_H
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
|
