<?php
/*
* This file is part of composer/semver.
*
* (c) Composer <https://github.com/composer>
*
* For the full copyright and license information, please view
* the LICENSE file that was distributed with this source code.
*/
namespace Composer\Semver\Constraint;
/**
* Defines the absence of a constraint.
*/
class EmptyConstraint implements ConstraintInterface
{
/** @var string */
protected $prettyString;
/**
* @param ConstraintInterface $provider
*
* @return bool
*/
public function matches(ConstraintInterface $provider)
{
return true;
}
/**
* @param string $prettyString
*/
public function setPrettyString($prettyString)
{
$this->prettyString = $prettyString;
}
/**
* @return string
*/
public function getPrettyString()
{
if ($this->prettyString) {
return $this->prettyString;
}
return (string) $this;
}
/**
* @return string
*/
public function __toString()
{
return '[]';
}
}