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//usr/share/php/Symfony/Component/ExpressionLanguage/Node/UnaryNode.php
<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\ExpressionLanguage\Node; use Symfony\Component\ExpressionLanguage\Compiler; /** * @author Fabien Potencier <fabien@symfony.com> * * @internal */ class UnaryNode extends Node { private static $operators = [ '!' => '!', 'not' => '!', '+' => '+', '-' => '-', ]; public function __construct(string $operator, Node $node) { parent::__construct( ['node' => $node], ['operator' => $operator] ); } public function compile(Compiler $compiler) { $compiler ->raw('(') ->raw(self::$operators[$this->attributes['operator']]) ->compile($this->nodes['node']) ->raw(')') ; } public function evaluate($functions, $values) { $value = $this->nodes['node']->evaluate($functions, $values); switch ($this->attributes['operator']) { case 'not': case '!': return !$value; case '-': return -$value; } return $value; } public function toArray(): array { return ['(', $this->attributes['operator'].' ', $this->nodes['node'], ')']; } }