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/*
* ExtLib
* Copyright 2024 Dominick Allen
*
* 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.
*/
#ifndef BOOKMOUSE_RESULT_HPP
#define BOOKMOUSE_RESULT_HPP
#include <variant>
namespace bookmouse {
template<typename T, typename E>
class Result {
public:
using ResultType = Result<T, E>;
static ResultType okay(const T& okay)
{
return ResultType{okay};
}
static ResultType okay(T&& okay)
{
return ResultType{std::move(okay)};
}
static ResultType error(const E& error)
{
return ResultType{error};
}
static ResultType error(E&& error)
{
return ResultType{std::move(error)};
}
[[nodiscard]] constexpr bool isOkay() const
{
return(m_value.index() == 0);
}
[[nodiscard]] constexpr bool isError() const
{
return(m_value.index() == 1);
}
T getOkay()
{
return std::get<T>(m_value);
}
E getError()
{
return std::get<E>(m_value);
}
private:
explicit Result() : m_value() {}
explicit Result(const T& value) : m_value(value) {}
explicit Result(const E& value) : m_value(value) {}
explicit Result(T&& value) : m_value(std::move(value)) {}
explicit Result(E&& value) : m_value(std::move(value)) {}
std::variant<T, E> m_value;
};
} // namespace bookmouse
#endif
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