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<?php
/*
* This file is part of Twig.
*
* (c) 2010 Fabien Potencier
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
class Twig_Extensions_TokenParser_Trans 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();
$stream = $this->parser->getStream();
$count = null;
$plural = null;
if (!$stream->test(Twig_Token::BLOCK_END_TYPE)) {
$body = $this->parser->getExpressionParser()->parseExpression();
} else {
$stream->expect(Twig_Token::BLOCK_END_TYPE);
$body = $this->parser->subparse(array($this, 'decideForFork'));
if ('plural' === $stream->next()->getValue()) {
$count = $this->parser->getExpressionParser()->parseExpression();
$stream->expect(Twig_Token::BLOCK_END_TYPE);
$plural = $this->parser->subparse(array($this, 'decideForEnd'), true);
}
}
$stream->expect(Twig_Token::BLOCK_END_TYPE);
$this->checkTransString($body, $lineno);
return new Twig_Extensions_Node_Trans($body, $plural, $count, $lineno, $this->getTag());
}
public function decideForFork(Twig_Token $token)
{
return $token->test(array('plural', 'endtrans'));
}
public function decideForEnd(Twig_Token $token)
{
return $token->test('endtrans');
}
/**
* Gets the tag name associated with this token parser.
*
* @param string The tag name
*/
public function getTag()
{
return 'trans';
}
protected function checkTransString(Twig_NodeInterface $body, $lineno)
{
foreach ($body as $i => $node) {
if (
$node instanceof Twig_Node_Text
||
($node instanceof Twig_Node_Print && $node->getNode('expr') instanceof Twig_Node_Expression_Name)
) {
continue;
}
throw new Twig_Error_Syntax(sprintf('The text to be translated with "trans" can only contain references to simple variables'), $lineno);
}
}
}
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