AceEnumerator.cs

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using System.Collections;
 
namespace System.Security.AccessControl;
 
public sealed class AceEnumerator : IEnumerator
{
    private int _current;
 
    private readonly GenericAcl _acl;
 
    object IEnumerator.Current
    {
        get
        {
            if (_current == -1 || _current >= _acl.Count)
            {
                throw new InvalidOperationException(System.SR.Arg_InvalidOperationException);
            }
            return _acl[_current];
        }
    }
 
    public GenericAce Current => (GenericAce)((IEnumerator)this).Current;
 
    internal AceEnumerator(GenericAcl collection)
    {
        if (collection == null)
        {
            throw new ArgumentNullException("collection");
        }
        _acl = collection;
        Reset();
    }
 
    public bool MoveNext()
    {
        _current++;
        return _current < _acl.Count;
    }
 
    public void Reset()
    {
        _current = -1;
    }
}