<?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.
*/
namespace Twig\TokenParser;
use Twig\Node\Expression\AssignNameExpression;
use Twig\Node\ForNode;
use Twig\Node\Node;
use Twig\Token;
/**
* Loops over each item of a sequence.
*
* <ul>
* {% for user in users %}
* <li>{{ user.username|e }}</li>
* {% endfor %}
* </ul>
*
* @internal
*/
final class ForTokenParser extends AbstractTokenParser
{
public function parse(Token $token): Node
{
$lineno = $token->getLine();
$stream = $this->parser->getStream();
$targets = $this->parser->getExpressionParser()->parseAssignmentExpression();
$stream->expect(/* Token::OPERATOR_TYPE */ 8, 'in');
$seq = $this->parser->getExpressionParser()->parseExpression();
$stream->expect(/* Token::BLOCK_END_TYPE */ 3);
$body = $this->parser->subparse([$this, 'decideForFork']);
if ('else' == $stream->next()->getValue()) {
$stream->expect(/* Token::BLOCK_END_TYPE */ 3);
$else = $this->parser->subparse([$this, 'decideForEnd'], true);
} else {
$else = null;
}
$stream->expect(/* Token::BLOCK_END_TYPE */ 3);
if (\count($targets) > 1) {
$keyTarget = $targets->getNode(0);
$keyTarget = new AssignNameExpression($keyTarget->getAttribute('name'), $keyTarget->getTemplateLine());
$valueTarget = $targets->getNode(1);
} else {
$keyTarget = new AssignNameExpression('_key', $lineno);
$valueTarget = $targets->getNode(0);
}
$valueTarget = new AssignNameExpression($valueTarget->getAttribute('name'), $valueTarget->getTemplateLine());
return new ForNode($keyTarget, $valueTarget, $seq, null, $body, $else, $lineno, $this->getTag());
}
public function decideForFork(Token $token): bool
{
return $token->test(['else', 'endfor']);
}
public function decideForEnd(Token $token): bool
{
return $token->test('endfor');
}
public function getTag(): string
{
return 'for';
}
}