|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/** |
|
4
|
|
|
* `SET` keyword parser. |
|
5
|
|
|
* |
|
6
|
|
|
* @package SqlParser |
|
7
|
|
|
* @subpackage Components |
|
8
|
|
|
*/ |
|
9
|
|
|
namespace SqlParser\Components; |
|
10
|
|
|
|
|
11
|
|
|
use SqlParser\Component; |
|
12
|
|
|
use SqlParser\Parser; |
|
13
|
|
|
use SqlParser\Token; |
|
14
|
|
|
use SqlParser\TokensList; |
|
15
|
|
|
|
|
16
|
|
|
/** |
|
17
|
|
|
* `SET` keyword parser. |
|
18
|
|
|
* |
|
19
|
|
|
* @category Keywords |
|
20
|
|
|
* @package SqlParser |
|
21
|
|
|
* @subpackage Components |
|
22
|
|
|
* @author Dan Ungureanu <[email protected]> |
|
23
|
|
|
* @license http://opensource.org/licenses/GPL-2.0 GNU Public License |
|
24
|
|
|
*/ |
|
25
|
|
|
class SetOperation extends Component |
|
26
|
|
|
{ |
|
27
|
|
|
|
|
28
|
|
|
/** |
|
29
|
|
|
* The name of the column that is being updated. |
|
30
|
|
|
* |
|
31
|
|
|
* @var string |
|
32
|
|
|
*/ |
|
33
|
|
|
public $column; |
|
34
|
|
|
|
|
35
|
|
|
/** |
|
36
|
|
|
* The new value. |
|
37
|
|
|
* |
|
38
|
|
|
* @var string |
|
39
|
|
|
*/ |
|
40
|
|
|
public $value; |
|
41
|
|
|
|
|
42
|
|
|
/** |
|
43
|
|
|
* @param Parser $parser The parser that serves as context. |
|
44
|
|
|
* @param TokensList $list The list of tokens that are being parsed. |
|
45
|
|
|
* @param array $options Parameters for parsing. |
|
46
|
|
|
* |
|
47
|
|
|
* @return SetOperation[] |
|
48
|
|
|
*/ |
|
49
|
8 |
|
public static function parse(Parser $parser, TokensList $list, array $options = array()) |
|
50
|
|
|
{ |
|
51
|
8 |
|
$ret = array(); |
|
52
|
|
|
|
|
53
|
8 |
|
$expr = new SetOperation(); |
|
54
|
|
|
|
|
55
|
|
|
/** |
|
56
|
|
|
* The state of the parser. |
|
57
|
|
|
* |
|
58
|
|
|
* Below are the states of the parser. |
|
59
|
|
|
* |
|
60
|
|
|
* 0 -------------------[ column name ]-------------------> 1 |
|
61
|
|
|
* |
|
62
|
|
|
* 1 ------------------------[ , ]------------------------> 0 |
|
63
|
|
|
* 1 ----------------------[ value ]----------------------> 1 |
|
64
|
|
|
* |
|
65
|
|
|
* @var int $state |
|
66
|
|
|
*/ |
|
67
|
8 |
|
$state = 0; |
|
68
|
|
|
|
|
69
|
8 |
|
for (; $list->idx < $list->count; ++$list->idx) { |
|
70
|
|
|
/** |
|
71
|
|
|
* Token parsed at this moment. |
|
72
|
|
|
* |
|
73
|
|
|
* @var Token $token |
|
74
|
|
|
*/ |
|
75
|
8 |
|
$token = $list->tokens[$list->idx]; |
|
76
|
|
|
|
|
77
|
|
|
// End of statement. |
|
78
|
8 |
|
if ($token->type === Token::TYPE_DELIMITER) { |
|
79
|
4 |
|
break; |
|
80
|
|
|
} |
|
81
|
|
|
|
|
82
|
|
|
// Skipping whitespaces and comments. |
|
83
|
8 |
|
if (($token->type === Token::TYPE_WHITESPACE) || ($token->type === Token::TYPE_COMMENT)) { |
|
84
|
8 |
|
continue; |
|
85
|
|
|
} |
|
86
|
|
|
|
|
87
|
|
|
// No keyword is expected. |
|
88
|
8 |
|
if (($token->type === Token::TYPE_KEYWORD) |
|
89
|
8 |
|
&& ($token->flags & Token::FLAG_KEYWORD_RESERVED) |
|
90
|
8 |
|
&& ($state == 0) |
|
91
|
8 |
|
) { |
|
92
|
4 |
|
break; |
|
93
|
|
|
} |
|
94
|
|
|
|
|
95
|
8 |
|
if ($state === 0) { |
|
96
|
8 |
|
if ($token->token === '=') { |
|
97
|
8 |
|
$state = 1; |
|
98
|
8 |
|
} elseif ($token->value !== ',') { |
|
99
|
8 |
|
$expr->column .= $token->token; |
|
100
|
8 |
|
} |
|
101
|
8 |
|
} elseif ($state === 1) { |
|
102
|
8 |
|
$tmp = Expression::parse( |
|
103
|
8 |
|
$parser, |
|
104
|
8 |
|
$list, |
|
105
|
|
|
array( |
|
106
|
8 |
|
'breakOnAlias' => true, |
|
107
|
|
|
) |
|
108
|
8 |
|
); |
|
109
|
8 |
|
if ($tmp == null) { |
|
110
|
|
|
break; |
|
111
|
|
|
} |
|
112
|
8 |
|
$expr->column = trim($expr->column); |
|
113
|
8 |
|
$expr->value = $tmp->expr; |
|
114
|
8 |
|
$ret[] = $expr; |
|
115
|
8 |
|
$expr = new SetOperation(); |
|
116
|
8 |
|
$state = 0; |
|
117
|
8 |
|
} |
|
118
|
8 |
|
} |
|
119
|
|
|
|
|
120
|
8 |
|
--$list->idx; |
|
121
|
8 |
|
return $ret; |
|
122
|
|
|
} |
|
123
|
|
|
|
|
124
|
|
|
/** |
|
125
|
|
|
* @param SetOperation|SetOperation[] $component The component to be built. |
|
126
|
|
|
* @param array $options Parameters for building. |
|
127
|
|
|
* |
|
128
|
|
|
* @return string |
|
129
|
|
|
*/ |
|
130
|
1 |
|
public static function build($component, array $options = array()) |
|
131
|
|
|
{ |
|
132
|
1 |
|
if (is_array($component)) { |
|
133
|
1 |
|
return implode(', ', $component); |
|
134
|
|
|
} else { |
|
135
|
1 |
|
return $component->column . ' = ' . $component->value; |
|
136
|
|
|
} |
|
137
|
|
|
} |
|
138
|
|
|
} |
|
139
|
|
|
|
phpmyadmin /
sql-parser
