SZGenericArrayEnumerator.cs

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using System.Collections;
using System.Collections.Generic;
 
namespace System;
 
internal sealed class SZGenericArrayEnumerator<T> : IEnumerator<T>, IDisposable, IEnumerator
{
    private readonly T[] _array;
 
    private int _index;
 
    internal static readonly SZGenericArrayEnumerator<T> Empty = new SZGenericArrayEnumerator<T>(new T[0]);
 
    public T Current
    {
        get
        {
            int index = _index;
            T[] array = _array;
            if ((uint)index >= (uint)array.Length)
            {
                ThrowHelper.ThrowInvalidOperationException_EnumCurrent(index);
            }
            return array[index];
        }
    }
 
    object IEnumerator.Current => Current;
 
    internal SZGenericArrayEnumerator(T[] array)
    {
        _array = array;
        _index = -1;
    }
 
    public bool MoveNext()
    {
        int num = _index + 1;
        if ((uint)num >= (uint)_array.Length)
        {
            _index = _array.Length;
            return false;
        }
        _index = num;
        return true;
    }
 
    void IEnumerator.Reset()
    {
        _index = -1;
    }
 
    public void Dispose()
    {
    }
}