Import YamlDotNet.

Assets/YamlDotNet/RepresentationModel/YamlNodeIdentityEqualityComparer.cs

@@ -0,0 +1,48 @@
+// This file is part of YamlDotNet - A .NET library for YAML.
+// Copyright (c) Antoine Aubry and contributors
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+// of the Software, and to permit persons to whom the Software is furnished to do
+// so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+
+namespace YamlDotNet.RepresentationModel
+{
+    /// <summary>
+    /// Comparer that is based on identity comparisons.
+    /// </summary>
+    public sealed class YamlNodeIdentityEqualityComparer : IEqualityComparer<YamlNode>
+    {
+        #region IEqualityComparer<YamlNode> Members
+
+        /// <summary />
+        public bool Equals([AllowNull] YamlNode x, [AllowNull] YamlNode y)
+        {
+            return ReferenceEquals(x, y);
+        }
+
+        /// <summary />
+        public int GetHashCode(YamlNode obj)
+        {
+            return obj.GetHashCode();
+        }
+
+        #endregion
+    }
+}