MySQL 8.0.31
Source Code Documentation
designator.h
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1/*
2 Copyright (c) 2015, 2022, Oracle and/or its affiliates.
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16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
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22 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23*/
24
25#ifndef MYSQL_HARNESS_DESIGNATOR_INCLUDED
26#define MYSQL_HARNESS_DESIGNATOR_INCLUDED
27
28#include <iostream>
29#include <sstream>
30#include <string>
31#include <vector>
32
33#include "harness_export.h"
34
35/**
36 * Class representing a version.
37 *
38 * Versions consist of a three-position dotted pair
39 * `MAJOR.MINOR.PATCH` where MAJOR is the major version number, MINOR
40 * is the minor version number, and PATCH is the patch number. Version
41 * comparison is done lexicographically in the normal manner so that
42 * 1.1.5 < 1.2.1 < 1.2.3.
43 */
44class Version {
45 public:
46 friend std::ostream &operator<<(std::ostream &out, const Version &ver) {
47 out << ver.str();
48 return out;
49 }
50
51 friend bool operator<(const Version &lhs, const Version &rhs) {
52 return (lhs.ver_major < rhs.ver_major) ||
53 (lhs.ver_major == rhs.ver_major && lhs.ver_minor < rhs.ver_minor) ||
54 (lhs.ver_minor == rhs.ver_minor && lhs.ver_patch < rhs.ver_patch);
55 }
56
57 friend bool operator==(const Version &lhs, const Version &rhs) {
58 return (lhs.ver_major == rhs.ver_major) &&
59 (lhs.ver_minor == rhs.ver_minor) && (lhs.ver_patch == rhs.ver_patch);
60 }
61
62 friend bool operator!=(const Version &lhs, const Version &rhs) {
63 return !(lhs == rhs);
64 }
65
66 friend bool operator<=(const Version &lhs, const Version &rhs) {
67 return (lhs < rhs) || (lhs == rhs);
68 }
69
70 friend bool operator>(const Version &lhs, const Version &rhs) {
71 return (rhs < lhs);
72 }
73
74 friend bool operator>=(const Version &lhs, const Version &rhs) {
75 return (lhs > rhs) || (lhs == rhs);
76 }
77
78 Version(int x, int y, int z = 0) : ver_major(x), ver_minor(y), ver_patch(z) {}
79
80 Version() : Version(0, 0, 0) {}
81
82 explicit Version(unsigned long ver)
83 : ver_major((ver >> 24) & 0xFF),
84 ver_minor((ver >> 16) & 0xFF),
85 ver_patch(ver & 0xFFFF) {}
86
87 std::string str() const {
89 buffer << ver_major << "." << ver_minor << "." << ver_patch;
90 return buffer.str();
91 }
92
96};
97
98/**
99 * Designator grammar
100 *
101 * root ::= name
102 * root ::= name "(" op version ( "," op version )* ")"
103 * op ::= "<<" | "<=" | "!=" | "==" | ">>" | ">="
104 * version ::= number "." number "." number
105 */
106
107class HARNESS_EXPORT Designator {
108 public:
109 explicit Designator(const std::string &str);
110
111 enum Relation {
117 GREATER_THEN
118 };
119
120 public:
121 class Constraint : public std::vector<std::pair<Relation, Version>> {
122 friend std::ostream &operator<<(std::ostream &out, const Constraint &con) {
123 static const char *const name[] = {
124 "<<", "<=", "==", "!=", ">=", ">>",
125 };
126 for (auto item : con) out << name[item.first] << item.second;
127 return out;
128 }
129 };
130
131 bool version_good(const Version &ver) const;
132
133 std::string plugin;
135
136 private:
137 void trace(const std::string &where) const;
138
139 [[noreturn]] void parse_error(const std::string &prefix) const;
140 std::string::value_type peek() const;
142
143 Relation parse_relation();
144 Version parse_version();
145 long parse_number();
146 void parse_plugin();
147 void parse_root();
148 void parse_version_list();
149 void skip_space();
150
151 const std::string &input_;
152 std::string::const_iterator cur_;
153};
154
155#endif /* MYSQL_HARNESS_DESIGNATOR_INCLUDED */
Definition: designator.h:121
friend std::ostream & operator<<(std::ostream &out, const Constraint &con)
Definition: designator.h:122
Designator grammar.
Definition: designator.h:107
void trace(const std::string &where) const
const std::string & input_
Definition: designator.h:151
std::string plugin
Definition: designator.h:133
std::string::const_iterator cur_
Definition: designator.h:152
Constraint constraint
Definition: designator.h:134
Relation
Definition: designator.h:111
@ GREATER_EQUAL
Definition: designator.h:116
@ LESS_THEN
Definition: designator.h:112
@ EQUAL
Definition: designator.h:114
@ NOT_EQUAL
Definition: designator.h:115
@ LESS_EQUAL
Definition: designator.h:113
Class representing a version.
Definition: designator.h:44
Version(int x, int y, int z=0)
Definition: designator.h:78
long ver_minor
Definition: designator.h:94
friend bool operator!=(const Version &lhs, const Version &rhs)
Definition: designator.h:62
long ver_major
Definition: designator.h:93
Version(unsigned long ver)
Definition: designator.h:82
std::string str() const
Definition: designator.h:87
long ver_patch
Definition: designator.h:95
friend bool operator>(const Version &lhs, const Version &rhs)
Definition: designator.h:70
friend bool operator>=(const Version &lhs, const Version &rhs)
Definition: designator.h:74
friend bool operator==(const Version &lhs, const Version &rhs)
Definition: designator.h:57
friend bool operator<=(const Version &lhs, const Version &rhs)
Definition: designator.h:66
Version()
Definition: designator.h:80
friend std::ostream & operator<<(std::ostream &out, const Version &ver)
Definition: designator.h:46
friend bool operator<(const Version &lhs, const Version &rhs)
Definition: designator.h:51
static char * where
Definition: mysqldump.cc:136
uint16_t value_type
Definition: vt100.h:183
std::string str(const mysqlrouter::ConfigGenerator::Options::Endpoint &ep)
Definition: config_generator.cc:1063
mutable_buffer buffer(void *p, size_t n) noexcept
Definition: buffer.h:418
std::basic_ostringstream< char, std::char_traits< char >, ut::allocator< char > > ostringstream
Specialization of basic_ostringstream which uses ut::allocator.
Definition: ut0new.h:2851
std::vector< T, ut::allocator< T > > vector
Specialization of vector which uses allocator.
Definition: ut0new.h:2855
case opt name
Definition: sslopt-case.h:32