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1 #region Copyright notice and license | |
2 // Protocol Buffers - Google's data interchange format | |
3 // Copyright 2008 Google Inc. All rights reserved. | |
4 // https://developers.google.com/protocol-buffers/ | |
5 // | |
6 // Redistribution and use in source and binary forms, with or without | |
7 // modification, are permitted provided that the following conditions are | |
8 // met: | |
9 // | |
10 // * Redistributions of source code must retain the above copyright | |
11 // notice, this list of conditions and the following disclaimer. | |
12 // * Redistributions in binary form must reproduce the above | |
13 // copyright notice, this list of conditions and the following disclaimer | |
14 // in the documentation and/or other materials provided with the | |
15 // distribution. | |
16 // * Neither the name of Google Inc. nor the names of its | |
17 // contributors may be used to endorse or promote products derived from | |
18 // this software without specific prior written permission. | |
19 // | |
20 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
21 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
22 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
23 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
24 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
25 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
26 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
27 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
28 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
29 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
30 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
31 #endregion | |
32 | |
33 using System.Collections.Generic; | |
34 using System.Collections.ObjectModel; | |
35 | |
36 namespace Google.Protobuf.Reflection | |
37 { | |
38 /// <summary> | |
39 /// Internal class containing utility methods when working with descriptors. | |
40 /// </summary> | |
41 internal static class DescriptorUtil | |
42 { | |
43 /// <summary> | |
44 /// Equivalent to Func[TInput, int, TOutput] but usable in .NET 2.0. Onl
y used to convert | |
45 /// arrays. | |
46 /// </summary> | |
47 internal delegate TOutput IndexedConverter<TInput, TOutput>(TInput eleme
nt, int index); | |
48 | |
49 /// <summary> | |
50 /// Converts the given array into a read-only list, applying the specifi
ed conversion to | |
51 /// each input element. | |
52 /// </summary> | |
53 internal static IList<TOutput> ConvertAndMakeReadOnly<TInput, TOutput> | |
54 (IList<TInput> input, IndexedConverter<TInput, TOutput> converter) | |
55 { | |
56 TOutput[] array = new TOutput[input.Count]; | |
57 for (int i = 0; i < array.Length; i++) | |
58 { | |
59 array[i] = converter(input[i], i); | |
60 } | |
61 return new ReadOnlyCollection<TOutput>(array); | |
62 } | |
63 } | |
64 } | |
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