inabox/InABox.Core/Utils/Result.cs

using System;
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Text;

namespace InABox.Core
{
    public static class Result
    {
        public static Result<T, E> Ok<T, E>(T value)
        {
            return new Result<T, E>(value);
        }
        public static Result<T, E> Error<T, E>(E error)
        {
            return new Result<T, E>(error);
        }
    }

    public class Result<T, E>
    {
        public enum Status
        {
            Ok,
            Error
        }

        private T _value;
        private E _error;
        private Status _status;

        public Result(T value)
        {
            _value = value;
            _error = default;
            _status = Status.Ok;
        }
        public Result(E error)
        {
            _value = default;
            _error = error;
            _status = Status.Error;
        }

        public bool Get([NotNullWhen(true)][MaybeNull] out T value, [NotNullWhen(false)][MaybeNull] out E error)
        {
            value = _value;
            error = _error;
            return _status == Status.Ok;
        }
    }
}