Verzeichnisstruktur phpBB-3.1.0
- Veröffentlicht
- 27.10.2014
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For.php
001 <?php
002
003 /*
004 * This file is part of Twig.
005 *
006 * (c) 2009 Fabien Potencier
007 * (c) 2009 Armin Ronacher
008 *
009 * For the full copyright and license information, please view the LICENSE
010 * file that was distributed with this source code.
011 */
012
013 /**
014 * Represents a for node.
015 *
016 * @author Fabien Potencier <fabien@symfony.com>
017 */
018 class Twig_Node_For extends Twig_Node
019 {
020 protected $loop;
021
022 public function __construct(Twig_Node_Expression_AssignName $keyTarget, Twig_Node_Expression_AssignName $valueTarget, Twig_Node_Expression $seq, Twig_Node_Expression $ifexpr = null, Twig_NodeInterface $body, Twig_NodeInterface $else = null, $lineno, $tag = null)
023 {
024 $body = new Twig_Node(array($body, $this->loop = new Twig_Node_ForLoop($lineno, $tag)));
025
026 if (null !== $ifexpr) {
027 $body = new Twig_Node_If(new Twig_Node(array($ifexpr, $body)), null, $lineno, $tag);
028 }
029
030 parent::__construct(array('key_target' => $keyTarget, 'value_target' => $valueTarget, 'seq' => $seq, 'body' => $body, 'else' => $else), array('with_loop' => true, 'ifexpr' => null !== $ifexpr), $lineno, $tag);
031 }
032
033 /**
034 * Compiles the node to PHP.
035 *
036 * @param Twig_Compiler A Twig_Compiler instance
037 */
038 public function compile(Twig_Compiler $compiler)
039 {
040 $compiler
041 ->addDebugInfo($this)
042 // the (array) cast bypasses a PHP 5.2.6 bug
043 ->write("\$context['_parent'] = (array) \$context;\n")
044 ->write("\$context['_seq'] = twig_ensure_traversable(")
045 ->subcompile($this->getNode('seq'))
046 ->raw(");\n")
047 ;
048
049 if (null !== $this->getNode('else')) {
050 $compiler->write("\$context['_iterated'] = false;\n");
051 }
052
053 if ($this->getAttribute('with_loop')) {
054 $compiler
055 ->write("\$context['loop'] = array(\n")
056 ->write(" 'parent' => \$context['_parent'],\n")
057 ->write(" 'index0' => 0,\n")
058 ->write(" 'index' => 1,\n")
059 ->write(" 'first' => true,\n")
060 ->write(");\n")
061 ;
062
063 if (!$this->getAttribute('ifexpr')) {
064 $compiler
065 ->write("if (is_array(\$context['_seq']) || (is_object(\$context['_seq']) && \$context['_seq'] instanceof Countable)) {\n")
066 ->indent()
067 ->write("\$length = count(\$context['_seq']);\n")
068 ->write("\$context['loop']['revindex0'] = \$length - 1;\n")
069 ->write("\$context['loop']['revindex'] = \$length;\n")
070 ->write("\$context['loop']['length'] = \$length;\n")
071 ->write("\$context['loop']['last'] = 1 === \$length;\n")
072 ->outdent()
073 ->write("}\n")
074 ;
075 }
076 }
077
078 $this->loop->setAttribute('else', null !== $this->getNode('else'));
079 $this->loop->setAttribute('with_loop', $this->getAttribute('with_loop'));
080 $this->loop->setAttribute('ifexpr', $this->getAttribute('ifexpr'));
081
082 $compiler
083 ->write("foreach (\$context['_seq'] as ")
084 ->subcompile($this->getNode('key_target'))
085 ->raw(" => ")
086 ->subcompile($this->getNode('value_target'))
087 ->raw(") {\n")
088 ->indent()
089 ->subcompile($this->getNode('body'))
090 ->outdent()
091 ->write("}\n")
092 ;
093
094 if (null !== $this->getNode('else')) {
095 $compiler
096 ->write("if (!\$context['_iterated']) {\n")
097 ->indent()
098 ->subcompile($this->getNode('else'))
099 ->outdent()
100 ->write("}\n")
101 ;
102 }
103
104 $compiler->write("\$_parent = \$context['_parent'];\n");
105
106 // remove some "private" loop variables (needed for nested loops)
107 $compiler->write('unset($context[\'_seq\'], $context[\'_iterated\'], $context[\''.$this->getNode('key_target')->getAttribute('name').'\'], $context[\''.$this->getNode('value_target')->getAttribute('name').'\'], $context[\'_parent\'], $context[\'loop\']);'."\n");
108
109 // keep the values set in the inner context for variables defined in the outer context
110 $compiler->write("\$context = array_intersect_key(\$context, \$_parent) + \$_parent;\n");
111 }
112 }
113