36 lines
654 B
C#
36 lines
654 B
C#
using System;
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using System.Runtime.CompilerServices;
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namespace MoonTools.ECS;
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public ref struct ReverseSpanEnumerator<T>
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{
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private ReadOnlySpan<T> Span;
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private int Index;
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public ReverseSpanEnumerator<T> GetEnumerator() => this;
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public T Current => Span[Index];
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public bool MoveNext()
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{
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if (Index > 0)
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{
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Index -= 1;
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return true;
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}
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return false;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public ReverseSpanEnumerator(Span<T> span)
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{
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Span = span;
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Index = span.Length;
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}
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public static ReverseSpanEnumerator<T> Empty => new ReverseSpanEnumerator<T>();
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}
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