|
1
|
|
|
<?php |
|
2
|
|
|
/* |
|
3
|
|
|
* This file is part of PommProject's Foundation package. |
|
4
|
|
|
* |
|
5
|
|
|
* (c) 2014 Grégoire HUBERT <[email protected]> |
|
6
|
|
|
* |
|
7
|
|
|
* For the full copyright and license information, please view the LICENSE |
|
8
|
|
|
* file that was distributed with this source code. |
|
9
|
|
|
*/ |
|
10
|
|
|
namespace PommProject\Foundation\Converter\Type; |
|
11
|
|
|
|
|
12
|
|
|
/** |
|
13
|
|
|
* BaseRange |
|
14
|
|
|
* |
|
15
|
|
|
* Abstract classes for range types. |
|
16
|
|
|
* |
|
17
|
|
|
* @package Foundation |
|
18
|
|
|
* @copyright 2014 Grégoire HUBERT |
|
19
|
|
|
* @author Grégoire HUBERT |
|
20
|
|
|
* @license X11 {@link http://opensource.org/licenses/mit-license.php} |
|
21
|
|
|
*/ |
|
22
|
|
|
abstract class BaseRange |
|
23
|
|
|
{ |
|
24
|
|
|
const INFINITY_MAX = 'infinity'; |
|
25
|
|
|
const INFINITY_MIN = '-infinity'; |
|
26
|
|
|
const EMPTY_RANGE = 'empty'; |
|
27
|
|
|
|
|
28
|
|
|
public $start_limit; |
|
29
|
|
|
public $end_limit; |
|
30
|
|
|
public $start_incl; |
|
31
|
|
|
public $end_incl; |
|
32
|
|
|
|
|
33
|
|
|
protected $description; |
|
34
|
|
|
|
|
35
|
|
|
/** |
|
36
|
|
|
* getRegexp |
|
37
|
|
|
* |
|
38
|
|
|
* This function function must capture 4 elements of the description in |
|
39
|
|
|
* this order: |
|
40
|
|
|
* |
|
41
|
|
|
* - left bracket style |
|
42
|
|
|
* - left element |
|
43
|
|
|
* - right element |
|
44
|
|
|
* - right bracket style |
|
45
|
|
|
* |
|
46
|
|
|
* @return string |
|
47
|
|
|
*/ |
|
48
|
|
|
abstract protected function getRegexp(); |
|
49
|
|
|
|
|
50
|
|
|
/** |
|
51
|
|
|
* getSubElement |
|
52
|
|
|
* |
|
53
|
|
|
* Return the representation for each element. |
|
54
|
|
|
* |
|
55
|
|
|
* @param string $element |
|
56
|
|
|
* @return mixed |
|
57
|
|
|
*/ |
|
58
|
|
|
abstract protected function getSubElement($element); |
|
59
|
|
|
|
|
60
|
|
|
/** |
|
61
|
|
|
* __construct |
|
62
|
|
|
* |
|
63
|
|
|
* Create an instance from a string definition. This string definition |
|
64
|
|
|
* matches PostgreSQL range definition. |
|
65
|
|
|
* |
|
66
|
|
|
* @param string $description |
|
67
|
|
|
* @throws \InvalidArgumentException |
|
68
|
|
|
*/ |
|
69
|
|
|
public function __construct($description) |
|
70
|
|
|
{ |
|
71
|
|
|
if (!preg_match($this->getRegexp(), $description, $matches)) { |
|
72
|
|
|
throw new \InvalidArgumentException( |
|
73
|
|
|
sprintf( |
|
74
|
|
|
"Could not parse range description '%s'.", |
|
75
|
|
|
$description |
|
76
|
|
|
) |
|
77
|
|
|
); |
|
78
|
|
|
} |
|
79
|
|
|
|
|
80
|
|
|
if (count($matches) === 2) { |
|
81
|
|
|
$this->start_limit = self::EMPTY_RANGE; |
|
82
|
|
|
$this->end_limit = self::EMPTY_RANGE; |
|
83
|
|
|
$this->start_incl = null; |
|
84
|
|
|
$this->end_incl = null; |
|
85
|
|
|
} else { |
|
86
|
|
|
$this->start_limit = $this->getSubElement($matches[3]); |
|
87
|
|
|
$this->end_limit = $this->getSubElement($matches[4]); |
|
88
|
|
|
$this->start_incl = (bool) ($matches[2] === '['); |
|
89
|
|
|
$this->end_incl = (bool) ($matches[5] === ']'); |
|
90
|
|
|
} |
|
91
|
|
|
|
|
92
|
|
|
$this->description = $description; |
|
93
|
|
|
} |
|
94
|
|
|
|
|
95
|
|
|
/** |
|
96
|
|
|
* __toString |
|
97
|
|
|
* |
|
98
|
|
|
* Text representation of a range. |
|
99
|
|
|
* |
|
100
|
|
|
* @return string |
|
101
|
|
|
*/ |
|
102
|
|
|
public function __toString() |
|
103
|
|
|
{ |
|
104
|
|
|
return $this->description; |
|
105
|
|
|
} |
|
106
|
|
|
} |
|
107
|
|
|
|
pomm-project /
Foundation
