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author | Jan Tattermusch <jtattermusch@users.noreply.github.com> | 2015-04-17 14:15:52 -0700 |
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committer | Jan Tattermusch <jtattermusch@users.noreply.github.com> | 2015-04-17 14:15:52 -0700 |
commit | 01c8c35ca3d3424a9473dd22ea2456933b3e8d36 (patch) | |
tree | de582cb9ef3e449f24015dec09f80e998806b26a /csharp/src/ProtocolBuffers/Collections/Lists.cs | |
parent | 813d6d652d8091e9365bfbd01efb5f2ee8bdfbce (diff) | |
parent | 1eab56aee8dddcb656db67d9fb87a8cc6a2ac112 (diff) | |
download | protobuf-01c8c35ca3d3424a9473dd22ea2456933b3e8d36.tar.gz protobuf-01c8c35ca3d3424a9473dd22ea2456933b3e8d36.tar.bz2 protobuf-01c8c35ca3d3424a9473dd22ea2456933b3e8d36.zip |
Merge pull request #2 from jtattermusch/csharp_protobuf_imported
Pulling protobuf-csharp-port into csharp/ directory
Diffstat (limited to 'csharp/src/ProtocolBuffers/Collections/Lists.cs')
-rw-r--r-- | csharp/src/ProtocolBuffers/Collections/Lists.cs | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/csharp/src/ProtocolBuffers/Collections/Lists.cs b/csharp/src/ProtocolBuffers/Collections/Lists.cs new file mode 100644 index 00000000..a24e1d9b --- /dev/null +++ b/csharp/src/ProtocolBuffers/Collections/Lists.cs @@ -0,0 +1,110 @@ +// Protocol Buffers - Google's data interchange format
+// Copyright 2008 Google Inc. All rights reserved.
+// http://github.com/jskeet/dotnet-protobufs/
+// Original C++/Java/Python code:
+// http://code.google.com/p/protobuf/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+
+namespace Google.ProtocolBuffers.Collections
+{
+ /// <summary>
+ /// Utility non-generic class for calling into Lists{T} using type inference.
+ /// </summary>
+ public static class Lists
+ {
+ /// <summary>
+ /// Returns a read-only view of the specified list.
+ /// </summary>
+ public static IList<T> AsReadOnly<T>(IList<T> list)
+ {
+ return Lists<T>.AsReadOnly(list);
+ }
+
+ public static bool Equals<T>(IList<T> left, IList<T> right)
+ {
+ if (left == right)
+ {
+ return true;
+ }
+ if (left == null || right == null)
+ {
+ return false;
+ }
+ if (left.Count != right.Count)
+ {
+ return false;
+ }
+ IEqualityComparer<T> comparer = EqualityComparer<T>.Default;
+ for (int i = 0; i < left.Count; i++)
+ {
+ if (!comparer.Equals(left[i], right[i]))
+ {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ public static int GetHashCode<T>(IList<T> list)
+ {
+ int hash = 31;
+ foreach (T element in list)
+ {
+ hash = hash*29 + element.GetHashCode();
+ }
+ return hash;
+ }
+ }
+
+ /// <summary>
+ /// Utility class for dealing with lists.
+ /// </summary>
+ public static class Lists<T>
+ {
+ private static readonly ReadOnlyCollection<T> empty = new ReadOnlyCollection<T>(new T[0]);
+
+ /// <summary>
+ /// Returns an immutable empty list.
+ /// </summary>
+ public static ReadOnlyCollection<T> Empty
+ {
+ get { return empty; }
+ }
+
+ /// <summary>
+ /// Returns either the original reference if it's already read-only,
+ /// or a new ReadOnlyCollection wrapping the original list.
+ /// </summary>
+ public static IList<T> AsReadOnly(IList<T> list)
+ {
+ return list.IsReadOnly ? list : new ReadOnlyCollection<T>(list);
+ }
+ }
+}
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