1
|
<?php
|
2
|
|
3
|
/*
|
4
|
* This file is part of Twig.
|
5
|
*
|
6
|
* (c) 2009 Fabien Potencier
|
7
|
* (c) 2009 Armin Ronacher
|
8
|
*
|
9
|
* For the full copyright and license information, please view the LICENSE
|
10
|
* file that was distributed with this source code.
|
11
|
*/
|
12
|
class Twig_Node_Expression_Name extends Twig_Node_Expression
|
13
|
{
|
14
|
protected $specialVars = array(
|
15
|
'_self' => '$this',
|
16
|
'_context' => '$context',
|
17
|
'_charset' => '$this->env->getCharset()',
|
18
|
);
|
19
|
|
20
|
public function __construct($name, $lineno)
|
21
|
{
|
22
|
parent::__construct(array(), array('name' => $name, 'is_defined_test' => false, 'ignore_strict_check' => false, 'always_defined' => false), $lineno);
|
23
|
}
|
24
|
|
25
|
public function compile(Twig_Compiler $compiler)
|
26
|
{
|
27
|
$name = $this->getAttribute('name');
|
28
|
|
29
|
$compiler->addDebugInfo($this);
|
30
|
|
31
|
if ($this->getAttribute('is_defined_test')) {
|
32
|
if ($this->isSpecial()) {
|
33
|
$compiler->repr(true);
|
34
|
} else {
|
35
|
$compiler->raw('array_key_exists(')->repr($name)->raw(', $context)');
|
36
|
}
|
37
|
} elseif ($this->isSpecial()) {
|
38
|
$compiler->raw($this->specialVars[$name]);
|
39
|
} elseif ($this->getAttribute('always_defined')) {
|
40
|
$compiler
|
41
|
->raw('$context[')
|
42
|
->string($name)
|
43
|
->raw(']')
|
44
|
;
|
45
|
} else {
|
46
|
// remove the non-PHP 5.4 version when PHP 5.3 support is dropped
|
47
|
// as the non-optimized version is just a workaround for slow ternary operator
|
48
|
// when the context has a lot of variables
|
49
|
if (PHP_VERSION_ID >= 50400) {
|
50
|
// PHP 5.4 ternary operator performance was optimized
|
51
|
$compiler
|
52
|
->raw('(isset($context[')
|
53
|
->string($name)
|
54
|
->raw(']) ? $context[')
|
55
|
->string($name)
|
56
|
->raw('] : ')
|
57
|
;
|
58
|
|
59
|
if ($this->getAttribute('ignore_strict_check') || !$compiler->getEnvironment()->isStrictVariables()) {
|
60
|
$compiler->raw('null)');
|
61
|
} else {
|
62
|
$compiler->raw('$this->getContext($context, ')->string($name)->raw('))');
|
63
|
}
|
64
|
} else {
|
65
|
$compiler
|
66
|
->raw('$this->getContext($context, ')
|
67
|
->string($name)
|
68
|
;
|
69
|
|
70
|
if ($this->getAttribute('ignore_strict_check')) {
|
71
|
$compiler->raw(', true');
|
72
|
}
|
73
|
|
74
|
$compiler
|
75
|
->raw(')')
|
76
|
;
|
77
|
}
|
78
|
}
|
79
|
}
|
80
|
|
81
|
public function isSpecial()
|
82
|
{
|
83
|
return isset($this->specialVars[$this->getAttribute('name')]);
|
84
|
}
|
85
|
|
86
|
public function isSimple()
|
87
|
{
|
88
|
return !$this->isSpecial() && !$this->getAttribute('is_defined_test');
|
89
|
}
|
90
|
}
|