Simple Result

Result.hpp

namespace DB {

    class Result {
    public:
        enum Value : uint8_t {
            Success,
            Failure
        };

        constexpr Result() = default;

        // Coerce from these type if necessary, useful for writing returning Result::Success as a Result not a Value.
        // Do not want explicit constructions. Also will not show as used ever.
        [[maybe_unused]] constexpr Result(Value aResult) : value(aResult) {}

        [[maybe_unused]] constexpr Result(bool aBool) : value(aBool ? Success : Failure) {}

        constexpr operator Value() const { return value; }  // Allow switch and comparisons.

        constexpr bool operator==(Result a) const { return value == a.value; }

        constexpr bool operator!=(Result a) const { return value != a.value; }

        [[nodiscard]] constexpr bool succeeded() const { return value == Success; }

        [[nodiscard]] constexpr bool failed() const { return value == Failure; }

    private:
        Value value;
    };

}