Save progress of qt6 implementation.

1 files changed, 82 insertions, 0 deletions

diff --git a/src/result.hpp b/src/result.hpp
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+++ b/src/result.hpp
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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 GETSUYOMI_RESULT_HPP
+#define GETSUYOMI_RESULT_HPP
+
+#include <variant>
+
+namespace getsuyomi {
+
+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 getsuyomi
+
+#endif