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author | Jon Skeet <skeet@pobox.com> | 2008-10-22 13:30:34 +0100 |
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committer | Jon Skeet <skeet@pobox.com> | 2008-10-22 13:30:34 +0100 |
commit | 6803686bc06c4d96afd9bd2637f7b37a58596699 (patch) | |
tree | 4b21c563f4cd4e399fbc0b253bc2f15e822eae88 /src/ProtocolBuffers/Descriptors/DescriptorUtil.cs | |
parent | f0589506c96600dcd01319b9d1929d87505f3daa (diff) | |
download | protobuf-6803686bc06c4d96afd9bd2637f7b37a58596699.tar.gz protobuf-6803686bc06c4d96afd9bd2637f7b37a58596699.tar.bz2 protobuf-6803686bc06c4d96afd9bd2637f7b37a58596699.zip |
First cut at new layout
Diffstat (limited to 'src/ProtocolBuffers/Descriptors/DescriptorUtil.cs')
-rw-r--r-- | src/ProtocolBuffers/Descriptors/DescriptorUtil.cs | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/ProtocolBuffers/Descriptors/DescriptorUtil.cs b/src/ProtocolBuffers/Descriptors/DescriptorUtil.cs new file mode 100644 index 00000000..c945616d --- /dev/null +++ b/src/ProtocolBuffers/Descriptors/DescriptorUtil.cs @@ -0,0 +1,43 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. +// http://code.google.com/p/protobuf/ +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +using System.Collections.Generic; +using Google.ProtocolBuffers.Collections; + +namespace Google.ProtocolBuffers.Descriptors { + /// <summary> + /// Internal class containing utility methods when working with descriptors. + /// </summary> + internal static class DescriptorUtil { + /// <summary> + /// Equivalent to Func[TInput, int, TOutput] but usable in .NET 2.0. Only used to convert + /// arrays. + /// </summary> + internal delegate TOutput IndexedConverter<TInput, TOutput>(TInput element, int index); + + /// <summary> + /// Converts the given array into a read-only list, applying the specified conversion to + /// each input element. + /// </summary> + internal static IList<TOutput> ConvertAndMakeReadOnly<TInput, TOutput>(IList<TInput> input, + IndexedConverter<TInput, TOutput> converter) { + TOutput[] array = new TOutput[input.Count]; + for (int i = 0; i < array.Length; i++) { + array[i] = converter(input[i], i); + } + return Lists<TOutput>.AsReadOnly(array); + } + } +} |