54 lines
1.3 KiB
C#
54 lines
1.3 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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namespace AMWD.Common.Cli
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{
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/// <summary>
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/// Walks through an <see cref="IEnumerable{T}"/> and allows retrieving additional items.
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <remarks>
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/// Initialises a new instance of the <see cref="EnumerableWalker{T}"/> class.
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/// </remarks>
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/// <param name="array">The array to walk though.</param>
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internal class EnumerableWalker<T>(IEnumerable<T> array)
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: IEnumerable<T> where T : class
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{
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private readonly IEnumerable<T> _array = array ?? throw new ArgumentNullException(nameof(array));
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private IEnumerator<T> _enumerator;
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IEnumerator<T> IEnumerable<T>.GetEnumerator()
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{
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_enumerator = _array.GetEnumerator();
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return _enumerator;
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}
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/// <summary>
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/// Gets the enumerator.
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/// </summary>
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/// <returns>The enumerator.</returns>
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public IEnumerator GetEnumerator()
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{
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_enumerator = _array.GetEnumerator();
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return _enumerator;
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}
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/// <summary>
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/// Gets the next item.
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/// </summary>
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/// <returns>The next item.</returns>
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public T GetNext()
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{
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if (_enumerator.MoveNext())
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{
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return _enumerator.Current;
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}
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else
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{
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return default;
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}
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}
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}
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}
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