<?php
// +-------------------------------------------------------------------------
// | Copyright (C) 2016 Yunify, Inc.
// +-------------------------------------------------------------------------
// | Licensed under the Apache License, Version 2.0 (the "License");
// | you may not use this work except in compliance with the License.
// | You may obtain a copy of the License in the LICENSE file, or 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.
// +-------------------------------------------------------------------------

namespace QingStor\SDK\Exception;

use Exception;

class ParameterRequiredException extends Exception
{
    public function __construct($parameter_name, $parent_name, $code = 0, Exception $previous = null)
    {
        $message = $parameter_name.' is required in '.$parent_name.'.';
        parent::__construct($message, $code, $previous);
    }

    public function __toString()
    {
        return __CLASS__.": [{$this->code}]: {$this->message}\n";
    }
}
