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//
// WrapHelper.cs
//
// Author:
// Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
//
// 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.
#if NET_4_0
using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
namespace System.Linq.Parallel.QueryNodes
{
internal static class WrapHelper
{
class EnumeratorWrapper<TEnum> : IEnumerable<TEnum>
{
IEnumerator<TEnum> enumerator;
public EnumeratorWrapper (IEnumerator<TEnum> enumerator)
{
this.enumerator = enumerator;
}
public IEnumerator<TEnum> GetEnumerator ()
{
return enumerator;
}
IEnumerator IEnumerable.GetEnumerator ()
{
return (IEnumerator)enumerator;
}
}
internal static IList<IEnumerable<TEnum>> Wrap<TEnum> (this IList<IEnumerator<TEnum>> src)
{
var list = new List<IEnumerable<TEnum>> (src.Count);
foreach (var iterator in src)
list.Add (new EnumeratorWrapper<TEnum> (iterator));
return list;
}
}
}
#endif
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