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<?php |
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|
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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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/** |
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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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|
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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 = $token->getValue(); |
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|
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if ($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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|
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$block->setNode('body', $body); |
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$this->parser->popBlockStack(); |
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$this->parser->popLocalScope(); |
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|
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return new Twig_Node_BlockReference($name, $lineno, $this->getTag()); |
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} |
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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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|
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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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|
