83 lines
1.8 KiB
C#
83 lines
1.8 KiB
C#
using System;
|
|
|
|
namespace BITKit
|
|
{
|
|
public interface IOptional
|
|
{
|
|
bool Allow { get; }
|
|
object Value { get; }
|
|
}
|
|
public interface IOptional<T>
|
|
{
|
|
bool Allow { get; set; }
|
|
T Value { get; set; }
|
|
T IfNotAllow(T value);
|
|
}
|
|
public class ReadOnlyOptional<T> : IOptional<T>
|
|
{
|
|
private readonly T value;
|
|
private readonly bool allow;
|
|
|
|
public ReadOnlyOptional(bool allow,T value )
|
|
{
|
|
this.value = value;
|
|
this.allow = allow;
|
|
}
|
|
public bool Allow
|
|
{
|
|
get => allow;
|
|
set => throw new NotSupportedException();
|
|
}
|
|
public T Value { get => value; set => throw new NotSupportedException(); }
|
|
public T IfNotAllow(T _value)
|
|
{
|
|
return allow ? Value : _value;
|
|
}
|
|
}
|
|
[System.Serializable]
|
|
public class Optional<T> : IOptional<T>
|
|
{
|
|
#if NET5_0_OR_GREATER
|
|
bool allow;
|
|
T value;
|
|
#else
|
|
[UnityEngine.SerializeField]
|
|
bool allow;
|
|
[UnityEngine.SerializeField]
|
|
T value;
|
|
#endif
|
|
public bool Allow { get => allow; set => allow = value;}
|
|
public T Value
|
|
{
|
|
get => value;
|
|
set=>this.value=value;
|
|
}
|
|
|
|
public T IfNotAllow(T other)
|
|
{
|
|
return Allow ? Value : other;
|
|
}
|
|
public T IfNotAllow(Func<T> other)
|
|
{
|
|
return Allow ? Value : other.Invoke();
|
|
}
|
|
|
|
public void SetValueThenAllow(T newValue)
|
|
{
|
|
value = newValue;
|
|
allow = true;
|
|
}
|
|
|
|
public void Clear()
|
|
{
|
|
Allow = false;
|
|
value = default;
|
|
}
|
|
|
|
public static implicit operator T(Optional<T> self)
|
|
{
|
|
return self.value;
|
|
}
|
|
}
|
|
}
|