MatchesBinary.php

<?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 Twig\Node\Expression\Binary;

use Twig\Compiler;
use Twig\Error\SyntaxError;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Node;
class MatchesBinary extends AbstractBinary {
    public function __construct(Node $left, Node $right, int $lineno) {
        if ($right instanceof ConstantExpression) {
            $regexp = $right->getAttribute('value');
            set_error_handler(static fn($t, $m) => throw new SyntaxError(\sprintf('Regexp "%s" passed to "matches" is not valid: %s.', $regexp, substr($m, 14)), $lineno));
            try {
                preg_match($regexp, '');
            } finally {
                restore_error_handler();
            }
        }
        parent::__construct($left, $right, $lineno);
    }
    public function compile(Compiler $compiler) : void {
        $compiler->raw('CoreExtension::matches(')
            ->subcompile($this->getNode('right'))
            ->raw(', ')
            ->subcompile($this->getNode('left'))
            ->raw(')');
    }
    public function operator(Compiler $compiler) : Compiler {
        return $compiler->raw('');
    }

}