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<?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'], ')'];
}
}
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