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<?php
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/*
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 * This file is part of Twig.
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 *
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 * (c) 2011 Fabien Potencier
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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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/**
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 * Checks if a variable is the exact same value as a constant.
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 *
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 * <pre>
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 *  {% if post.status is constant('Post::PUBLISHED') %}
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 *    the status attribute is exactly the same as Post::PUBLISHED
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 *  {% endif %}
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 * </pre>
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 *
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 * @author Fabien Potencier <fabien@symfony.com>
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 */
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class Twig_Node_Expression_Test_Constant extends Twig_Node_Expression_Test
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{
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    public function compile(Twig_Compiler $compiler)
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    {
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        $compiler
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            ->raw('(')
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            ->subcompile($this->getNode('node'))
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            ->raw(' === constant(')
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        ;
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        if ($this->getNode('arguments')->hasNode(1)) {
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            $compiler
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                ->raw('get_class(')
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                ->subcompile($this->getNode('arguments')->getNode(1))
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                ->raw(')."::".')
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            ;
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        }
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        $compiler
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            ->subcompile($this->getNode('arguments')->getNode(0))
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            ->raw('))')
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        ;
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    }
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}
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