59 lines
1.2 KiB
C#
59 lines
1.2 KiB
C#
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using System;
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using JetBrains.Annotations;
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namespace RoR2;
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public class CallbackCheck<TResult, TArg> where TResult : struct
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{
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public delegate void CallbackDelegate(TArg arg, ref TResult? resultOverride);
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private CallbackDelegate[] callbacks = Array.Empty<CallbackDelegate>();
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private int callbackCount;
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public void AddCallback([NotNull] CallbackDelegate callback)
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{
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if (callbacks.Length <= callbackCount + 1)
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{
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Array.Resize(ref callbacks, callbackCount + 1);
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}
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callbacks[callbackCount++] = callback;
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}
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public void RemoveCallback([NotNull] CallbackDelegate callback)
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{
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for (int i = 0; i < callbackCount; i++)
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{
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if ((object)callbacks[i] == callback)
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{
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for (int num = callbackCount - 1; i < num; i++)
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{
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callbacks[i] = callbacks[i + 1];
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}
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callbacks[--callbackCount] = null;
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break;
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}
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}
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}
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public void Clear()
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{
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Array.Clear(callbacks, 0, callbackCount);
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callbackCount = 0;
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}
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public TResult? Evaluate(TArg arg)
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{
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TResult? resultOverride = null;
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for (int i = 0; i < callbackCount; i++)
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{
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callbacks[i](arg, ref resultOverride);
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if (resultOverride.HasValue)
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{
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break;
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}
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}
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return resultOverride;
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}
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}
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