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<?php
/* * This file is part of Twig. * * (c) Fabien Potencier * (c) Armin Ronacher * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */
/** * Tests a condition. * * <pre> * {% if users %} * <ul> * {% for user in users %} * <li>{{ user.username|e }}</li> * {% endfor %} * </ul> * {% endif %} * </pre> * * @final */ class Twig_TokenParser_If extends Twig_TokenParser { public function parse(Twig_Token $token) { $lineno = $token->getLine(); $expr = $this->parser->getExpressionParser()->parseExpression(); $stream = $this->parser->getStream(); $stream->expect(Twig_Token::BLOCK_END_TYPE); $body = $this->parser->subparse([$this, 'decideIfFork']); $tests = [$expr, $body]; $else = null;
$end = false; while (!$end) { switch ($stream->next()->getValue()) { case 'else': $stream->expect(Twig_Token::BLOCK_END_TYPE); $else = $this->parser->subparse([$this, 'decideIfEnd']); break;
case 'elseif': $expr = $this->parser->getExpressionParser()->parseExpression(); $stream->expect(Twig_Token::BLOCK_END_TYPE); $body = $this->parser->subparse([$this, 'decideIfFork']); $tests[] = $expr; $tests[] = $body; break;
case 'endif': $end = true; break;
default: throw new Twig_Error_Syntax(sprintf('Unexpected end of template. Twig was looking for the following tags "else", "elseif", or "endif" to close the "if" block started at line %d).', $lineno), $stream->getCurrent()->getLine(), $stream->getSourceContext()); } }
$stream->expect(Twig_Token::BLOCK_END_TYPE);
return new Twig_Node_If(new Twig_Node($tests), $else, $lineno, $this->getTag()); }
public function decideIfFork(Twig_Token $token) { return $token->test(['elseif', 'else', 'endif']); }
public function decideIfEnd(Twig_Token $token) { return $token->test(['endif']); }
public function getTag() { return 'if'; } }
class_alias('Twig_TokenParser_If', 'Twig\TokenParser\IfTokenParser', false);
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