Файл: upload/core/vendor/twig/twig/src/TokenParser/GuardTokenParser.php
Строк: 88
<?php
/*
* This file is part of Twig.
*
* (c) Fabien Potencier
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace TwigTokenParser;
use TwigErrorSyntaxError;
use TwigNodeEmptyNode;
use TwigNodeNode;
use TwigNodeNodes;
use TwigToken;
/**
* @internal
*/
final class GuardTokenParser extends AbstractTokenParser
{
public function parse(Token $token): Node
{
$stream = $this->parser->getStream();
$typeToken = $stream->expect(Token::NAME_TYPE);
if (!in_array($typeToken->getValue(), ['function', 'filter', 'test'], true)) {
throw new SyntaxError(sprintf('Supported guard types are function, filter and test, "%s" given.', $typeToken->getValue()), $typeToken->getLine(), $stream->getSourceContext());
}
$method = 'get'.$typeToken->getValue();
$nameToken = $stream->expect(Token::NAME_TYPE);
$name = $nameToken->getValue();
if ('test' === $typeToken->getValue() && $stream->test(Token::NAME_TYPE)) {
// try 2-words tests
$name .= ' '.$stream->getCurrent()->getValue();
$stream->next();
}
try {
$exists = null !== $this->parser->getEnvironment()->$method($name);
} catch (SyntaxError) {
$exists = false;
}
$stream->expect(Token::BLOCK_END_TYPE);
if ($exists) {
$body = $this->parser->subparse([$this, 'decideGuardFork']);
} else {
$body = new EmptyNode();
$this->parser->subparseIgnoreUnknownTwigCallables([$this, 'decideGuardFork']);
}
$else = new EmptyNode();
if ('else' === $stream->next()->getValue()) {
$stream->expect(Token::BLOCK_END_TYPE);
$else = $this->parser->subparse([$this, 'decideGuardEnd'], true);
}
$stream->expect(Token::BLOCK_END_TYPE);
return new Nodes([$exists ? $body : $else]);
}
public function decideGuardFork(Token $token): bool
{
return $token->test(['else', 'endguard']);
}
public function decideGuardEnd(Token $token): bool
{
return $token->test(['endguard']);
}
public function getTag(): string
{
return 'guard';
}
}