1 files changed, 29 insertions, 0 deletions
diff --git a/src/SMAPI/Framework/StateTracking/Comparers/ObjectReferenceComparer.cs b/src/SMAPI/Framework/StateTracking/Comparers/ObjectReferenceComparer.cs
new file mode 100644
index 00000000..ef9adafb
--- /dev/null
+++ b/src/SMAPI/Framework/StateTracking/Comparers/ObjectReferenceComparer.cs
@@ -0,0 +1,29 @@
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+
+namespace StardewModdingAPI.Framework.StateTracking.Comparers
+{
+    /// <summary>A comparer which considers two references equal if they point to the same instance.</summary>
+    /// <typeparam name="T">The value type.</typeparam>
+    internal class ObjectReferenceComparer<T> : IEqualityComparer<T>
+    {
+        /*********
+        ** Public methods
+        *********/
+        /// <summary>Determines whether the specified objects are equal.</summary>
+        /// <returns>true if the specified objects are equal; otherwise, false.</returns>
+        /// <param name="x">The first object to compare.</param>
+        /// <param name="y">The second object to compare.</param>
+        public bool Equals(T x, T y)
+        {
+            return object.ReferenceEquals(x, y);
+        }
+
+        /// <summary>Get a hash code for the specified object.</summary>
+        /// <param name="obj">The value.</param>
+        public int GetHashCode(T obj)
+        {
+            return RuntimeHelpers.GetHashCode(obj);
+        }
+    }
+}