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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.
*/
/**
* Imports macros.
*
* <pre>
* {% from 'forms.html' import forms %}
* </pre>
*/
class Twig_TokenParser_From extends Twig_TokenParser
{
public function parse(Twig_Token $token)
{
$macro = $this->parser->getExpressionParser()->parseExpression();
$stream = $this->parser->getStream();
$stream->expect('import');
$targets = array();
do {
$name = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
$alias = $name;
if ($stream->nextIf('as')) {
$alias = $stream->expect(Twig_Token::NAME_TYPE)->getValue();
}
$targets[$name] = $alias;
if (!$stream->nextIf(Twig_Token::PUNCTUATION_TYPE, ',')) {
break;
}
} while (true);
$stream->expect(Twig_Token::BLOCK_END_TYPE);
$node = new Twig_Node_Import($macro, new Twig_Node_Expression_AssignName($this->parser->getVarName(), $token->getLine()), $token->getLine(), $this->getTag());
foreach ($targets as $name => $alias) {
if ($this->parser->isReservedMacroName($name)) {
throw new Twig_Error_Syntax(sprintf('"%s" cannot be an imported macro as it is a reserved keyword.', $name), $token->getLine(), $stream->getFilename());
}
$this->parser->addImportedSymbol('function', $alias, 'get'.$name, $node->getNode('var'));
}
return $node;
}
public function getTag()
{
return 'from';
}
}
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