2 // QueryIsOrderedVisitor.cs
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
29 using System.Threading;
30 using System.Linq.Parallel.QueryNodes;
32 namespace System.Linq.Parallel
34 internal class QueryIsOrderedVisitor : INodeVisitor
36 internal bool BehindOrderGuard {
41 #region INodeVisitor implementation
42 public void Visit (QueryBaseNode node)
47 public void Visit (QueryChildNode node)
49 node.Parent.Visit (this);
52 public void Visit (QueryOptionNode node)
54 Visit ((QueryChildNode)node);
57 public void Visit (QueryStartNode node)
61 public void Visit (QueryStreamNode node)
63 Visit ((QueryChildNode)node);
66 public void Visit (QueryOrderGuardNode node)
68 BehindOrderGuard = node.EnsureOrder;
71 public void Visit (QueryMuxNode node)
73 Visit ((QueryChildNode)node);
76 public void Visit (QueryHeadWorkerNode node)
78 Visit ((QueryStreamNode)node);