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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) 2009 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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* Interface implemented by lexer classes.
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*
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* @package twig
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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interface Twig_LexerInterface
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{
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/**
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* Tokenizes a source code.
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*
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* @param string $code The source code
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* @param string $filename A unique identifier for the source code
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*
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* @return Twig_TokenStream A token stream instance
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*/
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function tokenize($code, $filename = null);
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}
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