-
Notifications
You must be signed in to change notification settings - Fork 1.3k
/
TaskItemComparer.cs
85 lines (75 loc) · 2.62 KB
/
TaskItemComparer.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
//-----------------------------------------------------------------------
// </copyright>
// <summary>Implementation of IComparer on ITaskItems used for testing.</summary>
//-----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Build.Framework;
using Microsoft.Build.Shared;
namespace Microsoft.Build.UnitTests.BackEnd
{
/// <summary>
/// Implementation of IComparer on ITaskItems used for testing.
/// </summary>
public class TaskItemComparer : IComparer<ITaskItem>
{
/// <summary>
/// Constructor.
/// </summary>
private TaskItemComparer()
{
}
/// <summary>
/// Retrieves a new instance of the class.
/// </summary>
public static IComparer<ITaskItem> Instance
{
get { return new TaskItemComparer(); }
}
#region IComparer<ITaskItem> Members
/// <summary>
/// Compares two task items.
/// Built-in derivable metadata is ignored as it might not be copied.
/// </summary>
/// <returns>0 if they are equal, -1 otherwise.</returns>
public int Compare(ITaskItem x, ITaskItem y)
{
if (x.ItemSpec != y.ItemSpec)
{
return -1;
}
if (x.CloneCustomMetadata().Count != x.CloneCustomMetadata().Count)
{
return -1;
}
foreach (string metadataName in x.MetadataNames)
{
if (!FileUtilities.ItemSpecModifiers.IsItemSpecModifier(metadataName) ||
FileUtilities.ItemSpecModifiers.IsDerivableItemSpecModifier(metadataName))
{
if (x.GetMetadata(metadataName) != y.GetMetadata(metadataName))
{
return -1;
}
}
}
foreach (string metadataName in y.MetadataNames)
{
if (!FileUtilities.ItemSpecModifiers.IsItemSpecModifier(metadataName) ||
FileUtilities.ItemSpecModifiers.IsDerivableItemSpecModifier(metadataName))
{
if (x.GetMetadata(metadataName) != y.GetMetadata(metadataName))
{
return -1;
}
}
}
return 0;
}
#endregion
}
}