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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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 * Filters a section of a template by applying filters.
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 *
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 * <pre>
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 * {% filter upper %}
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 *  This text becomes uppercase
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 * {% endfilter %}
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 * </pre>
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 */
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class Twig_TokenParser_Filter extends Twig_TokenParser
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{
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    public function parse(Twig_Token $token)
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    {
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        $name = $this->parser->getVarName();
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        $ref = new Twig_Node_Expression_BlockReference(new Twig_Node_Expression_Constant($name, $token->getLine()), true, $token->getLine(), $this->getTag());
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        $filter = $this->parser->getExpressionParser()->parseFilterExpressionRaw($ref, $this->getTag());
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        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
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        $body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
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        $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE);
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        $block = new Twig_Node_Block($name, $body, $token->getLine());
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        $this->parser->setBlock($name, $block);
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        return new Twig_Node_Print($filter, $token->getLine(), $this->getTag());
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    }
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    public function decideBlockEnd(Twig_Token $token)
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    {
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        return $token->test('endfilter');
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    }
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    public function getTag()
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    {
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        return 'filter';
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    }
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}
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