1: 2: 3: 4: 5: 6: 7: 8: 9: 10: 11: 12: 13: 14: 15: 16: 17: 18: 19: 20: 21: 22: 23: 24: 25: 26: 27: 28: 29: 30: 31: 32: 33: 34: 35: 36: 37: 38: 39: 40: 41: 42: 43: 44: 45: 46: 47: 48: 49: 50: 51: 52: 53: 54: 55: 56: 57: 58: 59: 60: 61: 62: 63: 64: 65: 66: 67: 68: 69: 70: 71: 72: 73: 74: 75: 76: 77: 78: 79: 80:
<?php
/*
* This file is part of the webmozart/expression package.
*
* (c) Bernhard Schussek <bschussek@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Webmozart\Expression\Constraint;
use Webmozart\Expression\Expression;
use Webmozart\Expression\Logic\Literal;
/**
* Checks that a value is an instance of a given class name.
*
* @since 1.0
*
* @author Bernhard Schussek <bschussek@gmail.com>
*/
final class IsInstanceOf extends Literal
{
/**
* @var array
*/
private $className;
/**
* Creates the expression.
*
* @param string $className The accepted class name.
*/
public function __construct($className)
{
$this->className = $className;
}
/**
* Returns the accepted class name.
*
* @return array The accepted class name.
*/
public function getClassName()
{
return $this->className;
}
/**
* {@inheritdoc}
*/
public function evaluate($value)
{
return $value instanceof $this->className;
}
/**
* {@inheritdoc}
*/
public function equivalentTo(Expression $other)
{
// Since this class is final, we can check with instanceof
if (!$other instanceof $this) {
return false;
}
return $this->className === $other->className;
}
/**
* {@inheritdoc}
*/
public function toString()
{
return 'instanceOf('.$this->className.')';
}
}