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<?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;
use Webmozart\Expression\Util\StringUtil;
/**
* Checks that a value contains another value.
*
* @since 1.0
*
* @author Bernhard Schussek <bschussek@gmail.com>
* @author Stephan Wentz <stephan@wentz.it>
*/
final class Contains extends Literal
{
/**
* @var string
*/
private $comparedValue;
/**
* Creates the expression.
*
* @param string $comparedValue The compared value.
*/
public function __construct($comparedValue)
{
$this->comparedValue = (string) $comparedValue;
}
/**
* Returns the accepted suffix.
*
* @return string The accepted suffix.
*/
public function getComparedValue()
{
return $this->comparedValue;
}
/**
* {@inheritdoc}
*/
public function evaluate($value)
{
return false !== strpos($value, $this->comparedValue);
}
/**
* {@inheritdoc}
*/
public function equivalentTo(Expression $other)
{
// Since this class is final, we can check with instanceof
return $other instanceof $this && $this->comparedValue === $other->comparedValue;
}
/**
* {@inheritdoc}
*/
public function toString()
{
return 'contains('.StringUtil::formatValue($this->comparedValue).')';
}
}