THRIFT-4723 Consolidate C#/netcore into new netstd language target
Client: netstd
Patch: Jens Geyer
This closes #1710
diff --git a/lib/netstd/Thrift/Collections/TCollections.cs b/lib/netstd/Thrift/Collections/TCollections.cs
new file mode 100644
index 0000000..147bfc7
--- /dev/null
+++ b/lib/netstd/Thrift/Collections/TCollections.cs
@@ -0,0 +1,101 @@
+// Licensed to the Apache Software Foundation(ASF) under one
+// or more contributor license agreements.See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.The ASF licenses this file
+// to you 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;
+
+namespace Thrift.Collections
+{
+ // ReSharper disable once InconsistentNaming
+ public class TCollections
+ {
+ /// <summary>
+ /// This will return true if the two collections are value-wise the same.
+ /// If the collection contains a collection, the collections will be compared using this method.
+ /// </summary>
+ public static bool Equals(IEnumerable first, IEnumerable second)
+ {
+ if (first == null && second == null)
+ {
+ return true;
+ }
+
+ if (first == null || second == null)
+ {
+ return false;
+ }
+
+ var fiter = first.GetEnumerator();
+ var siter = second.GetEnumerator();
+
+ var fnext = fiter.MoveNext();
+ var snext = siter.MoveNext();
+
+ while (fnext && snext)
+ {
+ var fenum = fiter.Current as IEnumerable;
+ var senum = siter.Current as IEnumerable;
+
+ if (fenum != null && senum != null)
+ {
+ if (!Equals(fenum, senum))
+ {
+ return false;
+ }
+ }
+ else if (fenum == null ^ senum == null)
+ {
+ return false;
+ }
+ else if (!Equals(fiter.Current, siter.Current))
+ {
+ return false;
+ }
+
+ fnext = fiter.MoveNext();
+ snext = siter.MoveNext();
+ }
+
+ return fnext == snext;
+ }
+
+ /// <summary>
+ /// This returns a hashcode based on the value of the enumerable.
+ /// </summary>
+ public static int GetHashCode(IEnumerable enumerable)
+ {
+ if (enumerable == null)
+ {
+ return 0;
+ }
+
+ var hashcode = 0;
+
+ foreach (var obj in enumerable)
+ {
+ var enum2 = obj as IEnumerable;
+ var objHash = enum2 == null ? obj.GetHashCode() : GetHashCode(enum2);
+
+ unchecked
+ {
+ hashcode = (hashcode*397) ^ (objHash);
+ }
+ }
+
+ return hashcode;
+ }
+ }
+}
\ No newline at end of file