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ReferenceMatcher.php
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ReferenceMatcher.php
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<?php
/*
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
//require 'Yay/Matcher.php';
/**
* Compares values to see if they reference one another.
* @author Chris Corbyn <chris@w3style.co.uk>
* @package Yay
*/
class Yay_Matchers_ReferenceMatcher implements Yay_Matcher
{
/**
* The expected reference.
* @var mixed
* @access private
*/
private $_ref;
/**
* The desired return value.
* @var boolean
* @access private
*/
private $_result;
/**
* Create a new IdenticalMatcher expecting $expected.
* @param mixed $expected
* @param boolean $result to be expected
*/
public function __construct(&$ref, $result = true)
{
$this->_ref =& $ref;
$this->_result = $result;
}
/**
* Compare $ref with the expected reference and return true if it is the same reference.
* @param mixed $ref
* @return boolean
*/
public function matches(&$ref)
{
if (is_object($ref))
{
$isRef = ($this->_ref === $ref);
}
else
{
if ($this->_ref === $ref)
{
$copy = $ref;
$randomString = uniqid('yay');
$ref = $randomString;
$isRef = ($this->_ref === $ref);
$ref = $copy;
}
else
{
$isRef = false;
}
}
return (($this->_result && $isRef) || (!$this->_result && !$isRef));
}
/**
* Returns true if the argument doesn't need to be present.
* @return boolean
*/
public function isOptional()
{
return false;
}
/**
* Writes the match description as a string following $format.
* $format is a sprintf() string with %s, $s as $matcherName, $value respectively.
* @param string $format
* @return string
*/
public function describeMatch($format)
{
return '[reference]';
}
}