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74 lines
2.4 KiB
74 lines
2.4 KiB
7 years ago
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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) Fabien Potencier
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* (c) 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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/**
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* Marks a section of a template as being reusable.
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*
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* <pre>
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* {% block head %}
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* <link rel="stylesheet" href="style.css" />
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* <title>{% block title %}{% endblock %} - My Webpage</title>
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* {% endblock %}
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* </pre>
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*
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* @final
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*/
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class Twig_TokenParser_Block extends Twig_TokenParser
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{
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public function parse(Twig_Token $token)
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{
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$lineno = $token->getLine();
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$stream = $this->parser->getStream();
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$name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
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if ($this->parser->hasBlock($name)) {
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throw new Twig_Error_Syntax(sprintf("The block '%s' has already been defined line %d.", $name, $this->parser->getBlock($name)->getTemplateLine()), $stream->getCurrent()->getLine(), $stream->getSourceContext());
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}
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$this->parser->setBlock($name, $block = new Twig_Node_Block($name, new Twig_Node(array()), $lineno));
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$this->parser->pushLocalScope();
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$this->parser->pushBlockStack($name);
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if ($stream->nextIf(Twig_Token::BLOCK_END_TYPE)) {
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$body = $this->parser->subparse(array($this, 'decideBlockEnd'), true);
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if ($token = $stream->nextIf(Twig_Token::NAME_TYPE)) {
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$value = $token->getValue();
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if ($value != $name) {
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throw new Twig_Error_Syntax(sprintf('Expected endblock for block "%s" (but "%s" given).', $name, $value), $stream->getCurrent()->getLine(), $stream->getSourceContext());
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}
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}
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} else {
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$body = new Twig_Node(array(
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new Twig_Node_Print($this->parser->getExpressionParser()->parseExpression(), $lineno),
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));
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}
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$stream->expect(Twig_Token::BLOCK_END_TYPE);
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$block->setNode('body', $body);
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$this->parser->popBlockStack();
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$this->parser->popLocalScope();
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return new Twig_Node_BlockReference($name, $lineno, $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('endblock');
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}
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public function getTag()
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{
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return 'block';
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}
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}
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class_alias('Twig_TokenParser_Block', 'Twig\TokenParser\BlockTokenParser', false);
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