src/Reflectors/Value/ReflectionNull.php
<?php
/**
* This file is part of the Reflectors package.
*
* Copyright (c) 2015-2016 Pierre Cassat <me@e-piwi.fr> and contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* The source code of this package is available online at
* <http://github.com/atelierspierrot/reflectors>.
*/
namespace Reflectors\Value;
use \Reflectors\ValueType;
use \Reflectors\AbstractReflectionValue;
/**
* The [NULL](http://php.net/null) value reflector
*
* @author piwi <me@e-piwi.fr>
*/
class ReflectionNull
extends AbstractReflectionValue
{
/**
* @param null $value
* @param int $flag A flag used by the `ValueType::getType()` method (not used here)
* @throws \ReflectionException if the parameter is not null
*/
public function __construct($value, $flag = ValueType::MODE_STRICT)
{
if (!ValueType::isNull($value)) {
throw new \ReflectionException(
sprintf(__METHOD__.' expects parameter one to be NULL, %s given', gettype($value))
);
}
$this->setReadOnlyProperties($this::$_read_only);
$this->type = ValueType::TYPE_NULL;
$this->value = $value;
}
/**
* Representation of the object
*
* @return string
*/
public function __toString()
{
return 'Null value';
}
}