* {% if users %} *

* {% for user in users %} *
• {{ user.username|e }}
* {% endfor %} *

* {% endif %} * */ class Twig_TokenParser_If extends Twig_TokenParser { /** * Parses a token and returns a node. * * @param Twig_Token $token A Twig_Token instance * * @return Twig_NodeInterface A Twig_NodeInterface instance */ public function parse(Twig_Token $token) { $lineno = $token->getLine(); $expr = $this->parser->getExpressionParser()->parseExpression(); $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); $body = $this->parser->subparse(array($this, 'decideIfFork')); $tests = array($expr, $body); $else = null; $end = false; while (!$end) { switch ($this->parser->getStream()->next()->getValue()) { case 'else': $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); $else = $this->parser->subparse(array($this, 'decideIfEnd')); break; case 'elseif': $expr = $this->parser->getExpressionParser()->parseExpression(); $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); $body = $this->parser->subparse(array($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), -1); } } $this->parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); return new Twig_Node_If(new Twig_Node($tests), $else, $lineno, $this->getTag()); } public function decideIfFork(Twig_Token $token) { return $token->test(array('elseif', 'else', 'endif')); } public function decideIfEnd(Twig_Token $token) { return $token->test(array('endif')); } /** * Gets the tag name associated with this token parser. * * @param string The tag name */ public function getTag() { return 'if'; } }