← Back to branch summary

~ubuntu-branches/ubuntu/trusty/monodevelop/trusty-proposed

« back to all changes in this revision

Viewing changes to external/nrefactory/ICSharpCode.NRefactory/PatternMatching/Choice.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

Show diffs side-by-side

added added

removed removed

Lines of Context:
external/nrefactory/ICSharpCode.NRefactory/PatternMatching/Choice.cs
 
1
// Copyright (c) 2011-2013 AlphaSierraPapa for the SharpDevelop Team
 
2
// 
 
3
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
 
4
// software and associated documentation files (the "Software"), to deal in the Software
 
5
// without restriction, including without limitation the rights to use, copy, modify, merge,
 
6
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
 
7
// to whom the Software is furnished to do so, subject to the following conditions:
 
8
// 
 
9
// The above copyright notice and this permission notice shall be included in all copies or
 
10
// substantial portions of the Software.
 
11
// 
 
12
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
 
13
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 
14
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
 
15
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 
16
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 
17
// DEALINGS IN THE SOFTWARE.
 
18
 
 
19
using System;
 
20
using System.Collections;
 
21
using System.Collections.Generic;
 
22
 
 
23
namespace ICSharpCode.NRefactory.PatternMatching
 
24
{
 
25
        /// <summary>
 
26
        /// Matches one of several alternatives.
 
27
        /// </summary>
 
28
        public class Choice : Pattern, IEnumerable<INode>
 
29
        {
 
30
                readonly List<INode> alternatives = new List<INode>();
 
31
                
 
32
                public void Add(string name, INode alternative)
 
33
                {
 
34
                        if (alternative == null)
 
35
                                throw new ArgumentNullException("alternative");
 
36
                        alternatives.Add(new NamedNode(name, alternative));
 
37
                }
 
38
                
 
39
                public void Add(INode alternative)
 
40
                {
 
41
                        if (alternative == null)
 
42
                                throw new ArgumentNullException("alternative");
 
43
                        alternatives.Add(alternative);
 
44
                }
 
45
                
 
46
                public override bool DoMatch(INode other, Match match)
 
47
                {
 
48
                        var checkPoint = match.CheckPoint();
 
49
                        foreach (INode alt in alternatives) {
 
50
                                if (alt.DoMatch(other, match))
 
51
                                        return true;
 
52
                                else
 
53
                                        match.RestoreCheckPoint(checkPoint);
 
54
                        }
 
55
                        return false;
 
56
                }
 
57
                
 
58
                IEnumerator<INode> IEnumerable<INode>.GetEnumerator()
 
59
                {
 
60
                        return alternatives.GetEnumerator();
 
61
                }
 
62
                
 
63
                IEnumerator IEnumerable.GetEnumerator()
 
64
                {
 
65
                        return alternatives.GetEnumerator();
 
66
                }
 
67
        }
 
68
}