mono/mcs/class/System.Core/System.Linq.Parallel/ConcurrentGrouping.cs

//
// ConcurrentGrouping.cs
//
// Author:
//       Jérémie "Garuma" Laval <[email protected]>
//
// Copyright (c) 2010 Jérémie "Garuma" Laval
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

using System;
using System.Threading;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Concurrent;

namespace System.Linq.Parallel
{
	internal class ConcurrentGrouping<TKey, TElement> : IGrouping<TKey, TElement>
	{
		TKey key;
		IEnumerable<TElement> elements;

		internal ConcurrentGrouping (TKey key, IEnumerable<TElement> elements)
		{
			this.key = key;
			this.elements = elements;
		}

		public TKey Key {
			get {
				return key;
			}
		}

		IEnumerator IEnumerable.GetEnumerator ()
		{
			return ((IEnumerable)elements).GetEnumerator ();
		}

		IEnumerator<TElement> IEnumerable<TElement>.GetEnumerator ()
		{
			return elements.GetEnumerator ();
		}
	}
}