mirror of
https://github.com/RGBCube/serenity
synced 2025-10-31 16:12:44 +00:00
91 lines
2.3 KiB
C++
91 lines
2.3 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Assertions.h>
|
|
#include <AK/Optional.h>
|
|
|
|
namespace AK {
|
|
|
|
template<typename ValueType, typename ErrorType>
|
|
class [[nodiscard]] Result {
|
|
public:
|
|
Result(const ValueType& res)
|
|
: m_result(res)
|
|
{
|
|
}
|
|
|
|
Result(const ErrorType& error)
|
|
: m_error(error)
|
|
{
|
|
}
|
|
|
|
Result(const ValueType& res, const ErrorType& error)
|
|
: m_result(res)
|
|
, m_error(error)
|
|
{
|
|
}
|
|
|
|
Result(Result&& other)
|
|
: m_result(move(other.m_result))
|
|
, m_error(move(other.m_error))
|
|
{
|
|
}
|
|
|
|
Result(Result& other)
|
|
: m_result(other.m_result)
|
|
, m_error(other.m_error)
|
|
{
|
|
}
|
|
|
|
~Result()
|
|
{
|
|
}
|
|
|
|
ValueType& value()
|
|
{
|
|
return m_result.value();
|
|
}
|
|
|
|
ErrorType& error()
|
|
{
|
|
return m_error.value();
|
|
}
|
|
|
|
bool is_error() const
|
|
{
|
|
return m_error.has_value();
|
|
}
|
|
|
|
private:
|
|
Optional<ValueType> m_result;
|
|
Optional<ErrorType> m_error;
|
|
};
|
|
|
|
}
|
|
|
|
using AK::Result;
|