|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
namespace Popy\Calendar\Parser\DateLexer; |
|
4
|
|
|
|
|
5
|
|
|
use InvalidArgumentException; |
|
6
|
|
|
use Popy\Calendar\Parser\FormatToken; |
|
7
|
|
|
use Popy\Calendar\Parser\DateLexerResult; |
|
8
|
|
|
|
|
9
|
|
|
/** |
|
10
|
|
|
* Simple Preg lexer implementation : will match a single pattern and associate |
|
11
|
|
|
* it with the input token if it's a symbol. |
|
12
|
|
|
* |
|
13
|
|
|
* Litterals and EOF are also handled, but the input pattern is not used. |
|
14
|
|
|
*/ |
|
15
|
|
|
class PregSimple extends AbstractPreg |
|
16
|
|
|
{ |
|
17
|
|
|
/** |
|
18
|
|
|
* Registered symbol. |
|
19
|
|
|
* |
|
20
|
|
|
* @var string|null |
|
21
|
|
|
*/ |
|
22
|
|
|
protected $symbol; |
|
23
|
|
|
|
|
24
|
|
|
/** |
|
25
|
|
|
* Expression. |
|
26
|
|
|
* |
|
27
|
|
|
* @var string |
|
28
|
|
|
*/ |
|
29
|
|
|
protected $expression; |
|
30
|
|
|
|
|
31
|
|
|
/** |
|
32
|
|
|
* Match processing callback. |
|
33
|
|
|
* |
|
34
|
|
|
* @var callable |
|
35
|
|
|
*/ |
|
36
|
|
|
protected $callback; |
|
37
|
|
|
|
|
38
|
|
|
/** |
|
39
|
|
|
* Class constructor. |
|
40
|
|
|
* |
|
41
|
|
|
* @param FormatToken $token Token to match. |
|
42
|
|
|
* @param string|null $pattern Preg pattern. |
|
43
|
|
|
*/ |
|
44
|
|
|
public function __construct(FormatToken $token, $pattern = null) |
|
45
|
|
|
{ |
|
46
|
|
|
if ($token->isLitteral()) { |
|
47
|
|
|
$this->expression = preg_quote($token->getValue(), '/'); |
|
48
|
|
|
return; |
|
49
|
|
|
} |
|
50
|
|
|
|
|
51
|
|
|
if ($token->isType(FormatToken::TYPE_EOF)) { |
|
52
|
|
|
$this->expression = '$'; |
|
53
|
|
|
return; |
|
54
|
|
|
} |
|
55
|
|
|
|
|
56
|
|
|
if ($token->isSymbol()) { |
|
57
|
|
|
if ($pattern === null) { |
|
58
|
|
|
throw new InvalidArgumentException( |
|
59
|
|
|
'You must supply a pattern for a Symbol token' |
|
60
|
|
|
); |
|
61
|
|
|
} |
|
62
|
|
|
$this->symbol = $token->getName(); |
|
63
|
|
|
$this->expression = '(' . $pattern . ')'; |
|
64
|
|
|
return; |
|
65
|
|
|
} |
|
66
|
|
|
|
|
67
|
|
|
throw new InvalidArgumentException( |
|
68
|
|
|
'Unsupported token type : ' . $token->getType() |
|
69
|
|
|
); |
|
70
|
|
|
} |
|
71
|
|
|
|
|
72
|
|
|
/** |
|
73
|
|
|
* Match processing callback. |
|
74
|
|
|
* |
|
75
|
|
|
* The callback will receive the Lexer and the matched string as input, and |
|
76
|
|
|
* must return the value to hydrate in the result. |
|
77
|
|
|
* |
|
78
|
|
|
* @param callable $callback |
|
79
|
|
|
*/ |
|
80
|
|
|
public function setCallback($callback) |
|
81
|
|
|
{ |
|
82
|
|
|
$this->callback = $callback; |
|
83
|
|
|
} |
|
84
|
|
|
|
|
85
|
|
|
/** |
|
86
|
|
|
* @inheritDoc |
|
87
|
|
|
*/ |
|
88
|
|
|
public function getExpression() |
|
89
|
|
|
{ |
|
90
|
|
|
return $this->expression; |
|
91
|
|
|
} |
|
92
|
|
|
|
|
93
|
|
|
/** |
|
94
|
|
|
* @inheritDoc |
|
95
|
|
|
*/ |
|
96
|
|
|
public function hydrateResult(DateLexerResult $result, $match, $offset = 1) |
|
97
|
|
|
{ |
|
98
|
|
|
if ($this->symbol === null || !isset($match[$offset])) { |
|
99
|
|
|
return $offset; |
|
100
|
|
|
} |
|
101
|
|
|
|
|
102
|
|
|
// Did match |
|
103
|
|
|
if ($match[$offset][1] !== -1) { |
|
104
|
|
|
$res = $match[$offset][0]; |
|
105
|
|
|
|
|
106
|
|
|
if ($this->callback !== null) { |
|
107
|
|
|
$res = call_user_func($this->callback, $this, $res); |
|
108
|
|
|
} |
|
109
|
|
|
|
|
110
|
|
|
$result->set($this->symbol, $res); |
|
111
|
|
|
} |
|
112
|
|
|
|
|
113
|
|
|
return $offset + 1; |
|
114
|
|
|
} |
|
115
|
|
|
} |
|
116
|
|
|
|
popy-dev /
popy-calendar
