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Enumerables can now be stored as structs if possible

4.0.0-beta
Anairkoen Schno 4 years ago
parent
commit
60b222742d
1 changed files with 14 additions and 8 deletions
  1. +14
    -8
      IPA.Loader/Utilities/EnumerableExtensions.cs

+ 14
- 8
IPA.Loader/Utilities/EnumerableExtensions.cs View File

@ -33,17 +33,19 @@ namespace IPA.Utilities
this.first = first; this.first = first;
} }
public IEnumerator<T> GetEnumerator() => new PrependEnumerator(this);
public PrependEnumerator GetEnumerator() => new PrependEnumerator(this);
private sealed class PrependEnumerator : IEnumerator<T>
public struct PrependEnumerator : IEnumerator<T>
{ {
private readonly IEnumerator<T> restEnum; private readonly IEnumerator<T> restEnum;
private readonly PrependEnumerable<T> enumerable; private readonly PrependEnumerable<T> enumerable;
private int state = 0;
public PrependEnumerator(PrependEnumerable<T> enumerable)
private int state;
internal PrependEnumerator(PrependEnumerable<T> enumerable)
{ {
this.enumerable = enumerable; this.enumerable = enumerable;
restEnum = enumerable.rest.GetEnumerator(); restEnum = enumerable.rest.GetEnumerator();
state = 0;
Current = default;
} }
public T Current { get; private set; } public T Current { get; private set; }
@ -82,6 +84,7 @@ namespace IPA.Utilities
} }
} }
IEnumerator<T> IEnumerable<T>.GetEnumerator() => new PrependEnumerator(this);
IEnumerator IEnumerable.GetEnumerator() => GetEnumerator(); IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
} }
@ -106,17 +109,19 @@ namespace IPA.Utilities
this.last = last; this.last = last;
} }
public IEnumerator<T> GetEnumerator() => new AppendEnumerator(this);
public AppendEnumerator GetEnumerator() => new AppendEnumerator(this);
private sealed class AppendEnumerator : IEnumerator<T>
public struct AppendEnumerator : IEnumerator<T>
{ {
private readonly IEnumerator<T> restEnum; private readonly IEnumerator<T> restEnum;
private readonly AppendEnumerable<T> enumerable; private readonly AppendEnumerable<T> enumerable;
private int state = 0;
public AppendEnumerator(AppendEnumerable<T> enumerable)
private int state;
internal AppendEnumerator(AppendEnumerable<T> enumerable)
{ {
this.enumerable = enumerable; this.enumerable = enumerable;
restEnum = enumerable.rest.GetEnumerator(); restEnum = enumerable.rest.GetEnumerator();
state = 0;
Current = default;
} }
public T Current { get; private set; } public T Current { get; private set; }
@ -155,6 +160,7 @@ namespace IPA.Utilities
} }
} }
IEnumerator<T> IEnumerable<T>.GetEnumerator() => GetEnumerator();
IEnumerator IEnumerable.GetEnumerator() => GetEnumerator(); IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
} }


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