5 // Jérémie "Garuma" Laval <jeremie.laval@gmail.com>
7 // Copyright (c) 2010 Jérémie "Garuma" Laval
9 // Permission is hereby granted, free of charge, to any person obtaining a copy
10 // of this software and associated documentation files (the "Software"), to deal
11 // in the Software without restriction, including without limitation the rights
12 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 // copies of the Software, and to permit persons to whom the Software is
14 // furnished to do so, subject to the following conditions:
16 // The above copyright notice and this permission notice shall be included in
17 // all copies or substantial portions of the Software.
19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
30 using System.Collections;
31 using System.Collections.Generic;
33 namespace System.Linq.Parallel.QueryNodes
35 internal static class WrapHelper
37 class EnumeratorWrapper<TEnum> : IEnumerable<TEnum>
39 IEnumerator<TEnum> enumerator;
41 public EnumeratorWrapper (IEnumerator<TEnum> enumerator)
43 this.enumerator = enumerator;
46 public IEnumerator<TEnum> GetEnumerator ()
51 IEnumerator IEnumerable.GetEnumerator ()
53 return (IEnumerator)enumerator;
57 internal static IList<IEnumerable<TEnum>> Wrap<TEnum> (this IList<IEnumerator<TEnum>> src)
59 return src.Select ((e) => (IEnumerable<TEnum>)new EnumeratorWrapper<TEnum> (e)).ToArray ();