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author | Dominick Allen <djallen@librehumanitas.org> | 2024-09-22 10:19:15 -0500 |
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committer | Dominick Allen <djallen@librehumanitas.org> | 2024-09-22 10:19:15 -0500 |
commit | bf81e34921e3e30b05313efbcf5c9fa839cb7c05 (patch) | |
tree | b56a343e59164bc347232669e8bb808cf3c4f4ef /include/result.hpp |
Initial commit.
Diffstat (limited to 'include/result.hpp')
-rw-r--r-- | include/result.hpp | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/include/result.hpp b/include/result.hpp new file mode 100644 index 0000000..158afd1 --- /dev/null +++ b/include/result.hpp @@ -0,0 +1,83 @@ +/* + * LibFud + * 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 <utility> +#include <variant> + +namespace fud { + +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 |