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arangodb/lib/Basics/Result.h

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////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2017 ArangoDB GmbH, Cologne, Germany
///
/// 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.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
////////////////////////////////////////////////////////////////////////////////
#ifndef ARANGODB_BASICS_RESULT_H
#define ARANGODB_BASICS_RESULT_H 1
#include "Basics/Common.h"
namespace arangodb {
class Result {
public:
Result() : _errorNumber(TRI_ERROR_NO_ERROR) {}
Result(int errorNumber)
: _errorNumber(errorNumber),
_errorMessage(TRI_errno_string(errorNumber)) {}
Result(int errorNumber, std::string const& errorMessage)
: _errorNumber(errorNumber), _errorMessage(errorMessage) {}
Result(int errorNumber, std::string&& errorMessage)
: _errorNumber(errorNumber), _errorMessage(std::move(errorMessage)) {}
virtual ~Result() {}
public:
bool ok() const { return _errorNumber == TRI_ERROR_NO_ERROR; }
int errorNumber() const { return _errorNumber; }
// the default implementations is const, but sub-classes might
// really do more work to compute.
virtual std::string errorMessage() { return _errorMessage; }
protected:
int _errorNumber;
std::string _errorMessage;
};
}
#endif