Files
LuaCsForBarotraumaEP/Barotrauma/BarotraumaShared/SharedSource/Utils/Result.cs
2022-12-20 17:05:53 +02:00

86 lines
2.5 KiB
C#

#nullable enable
using System;
using System.Diagnostics.CodeAnalysis;
namespace Barotrauma
{
public abstract class Result<T, TError>
where T: notnull
where TError: notnull
{
public abstract bool IsSuccess { get; }
public bool IsFailure => !IsSuccess;
public static Result<T, TError> Success(T value)
=> new Success<T, TError>(value);
public static Result<T, TError> Failure(TError error)
=> new Failure<T, TError>(error);
public abstract bool TryUnwrapSuccess([MaybeNullWhen(returnValue: false)] out T value);
public abstract bool TryUnwrapFailure([MaybeNullWhen(returnValue: false)] out TError value);
public abstract override string? ToString();
public static (Func<T, Result<T, TError>> Success, Func<TError, Result<T, TError>> Failure) GetFactoryMethods()
=> (Success, Failure);
}
public sealed class Success<T, TError> : Result<T, TError>
where T: notnull
where TError: notnull
{
public readonly T Value;
public override bool IsSuccess => true;
public override bool TryUnwrapSuccess([MaybeNullWhen(returnValue: false)] out T value)
{
value = Value;
return true;
}
public override bool TryUnwrapFailure([MaybeNullWhen(returnValue: false)] out TError value)
{
value = default;
return false;
}
public override string ToString()
=> $"Success<{typeof(T).NameWithGenerics()}, {typeof(TError).NameWithGenerics()}>({Value})";
public Success(T value)
{
Value = value;
}
}
public sealed class Failure<T, TError> : Result<T, TError>
where T: notnull
where TError: notnull
{
public readonly TError Error;
public override bool IsSuccess => false;
public override bool TryUnwrapSuccess([MaybeNullWhen(returnValue: false)] out T value)
{
value = default;
return false;
}
public override bool TryUnwrapFailure([MaybeNullWhen(returnValue: false)] out TError value)
{
value = Error;
return true;
}
public override string ToString()
=> $"Failure<{typeof(T).NameWithGenerics()}, {typeof(TError).NameWithGenerics()}>({Error})";
public Failure(TError error)
{
Error = error;
}
}
}