using System;
using System.Collections;
using System.Collections.Generic;

namespace Intrepid.Collections.Generic
{
	public class EnumerableWrapper<T> : IEnumerable<T>
	{
		class EnumeratorWrapper : IEnumerator<T>
		{
			IEnumerator enumerator;

			public EnumeratorWrapper(IEnumerator enumerator)
			{
				this.enumerator = enumerator;
			}

			public void Dispose()
			{
				// maybe we should dispose the underlying IEnumerable?
			}

			public bool MoveNext()
			{
				return enumerator.MoveNext();
			}

			public void Reset()
			{
				enumerator.Reset();
			}

			object System.Collections.IEnumerator.Current
			{
				get { return enumerator.Current; }
			}

			public T Current
			{
				get { return (T)enumerator.Current; }
			}
		}

		IEnumerator enumerator;

		public EnumerableWrapper (IEnumerable enumerable)
		{
			enumerator = enumerable.GetEnumerator();
		}

		public IEnumerator<T> GetEnumerator()
		{
			return new EnumeratorWrapper(enumerator);
		}

		IEnumerator System.Collections.IEnumerable.GetEnumerator()
		{
			return enumerator;
		}
	}
}