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72 lines
2.5 KiB
72 lines
2.5 KiB
<?php
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/*
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* This file is part of Twig.
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*
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* (c) 2009 Fabien Potencier
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* (c) 2009 Armin Ronacher
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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class Twig_Node_Expression_Filter extends Twig_Node_Expression
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{
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public function __construct(Twig_NodeInterface $node, Twig_Node_Expression_Constant $filterName, Twig_NodeInterface $arguments, $lineno, $tag = null)
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{
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parent::__construct(array('node' => $node, 'filter' => $filterName, 'arguments' => $arguments), array(), $lineno, $tag);
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}
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public function compile(Twig_Compiler $compiler)
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{
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$name = $this->getNode('filter')->getAttribute('value');
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if (false === $filter = $compiler->getEnvironment()->getFilter($name)) {
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throw new Twig_Error_Syntax(sprintf('The filter "%s" does not exist', $name), $this->getLine());
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}
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$node = $this->getNode('node');
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// The default filter is intercepted when the filtered value
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// is a name (like obj) or an attribute (like obj.attr)
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// In such a case, it's compiled to {{ obj is defined ? obj|default('bar') : 'bar' }}
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if ('default' === $name && ($node instanceof Twig_Node_Expression_Name || $node instanceof Twig_Node_Expression_GetAttr)) {
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$compiler
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->raw('((')
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->subcompile(new Twig_Node_Expression_Test($node, 'defined', new Twig_Node(), $this->getLine()))
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->raw(') ? (')
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;
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$this->compileFilter($compiler, $filter);
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$compiler->raw(') : (');
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if ($this->getNode('arguments')->hasNode(0)) {
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$compiler->subcompile($this->getNode('arguments')->getNode(0));
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} else {
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$compiler->string('');
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}
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$compiler->raw('))');
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} else {
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$this->compileFilter($compiler, $filter);
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}
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}
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protected function compileFilter(Twig_Compiler $compiler, Twig_FilterInterface $filter)
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{
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$compiler
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->raw($filter->compile().'(')
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->raw($filter->needsEnvironment() ? '$this->env, ' : '')
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->raw($filter->needsContext() ? '$context, ' : '')
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->subcompile($this->getNode('node'))
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;
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foreach ($this->getNode('arguments') as $node) {
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$compiler
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->raw(', ')
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->subcompile($node)
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;
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}
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$compiler->raw(')');
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}
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}
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