1 files changed, 31 insertions, 0 deletions
diff --git a/src/StardewModdingAPI.AssemblyRewriters/Finders/SMAPI_Extensions_MethodFinder.cs b/src/StardewModdingAPI.AssemblyRewriters/Finders/SMAPI_Extensions_MethodFinder.cs
new file mode 100644
index 00000000..f359b595
--- /dev/null
+++ b/src/StardewModdingAPI.AssemblyRewriters/Finders/SMAPI_Extensions_MethodFinder.cs
@@ -0,0 +1,31 @@
+using System.Diagnostics.CodeAnalysis;
+using Mono.Cecil;
+using Mono.Cecil.Cil;
+using StardewModdingAPI.AssemblyRewriters.Framework;
+
+namespace StardewModdingAPI.AssemblyRewriters.Finders
+{
+    /// <summary>Matches CIL instructions that reference the former <c>StardewModdingAPI.Extensions</c> class, which was removed in SMAPI 1.9.</summary>
+    [SuppressMessage("ReSharper", "InconsistentNaming", Justification = "This class is not meant to be used directly, and is deliberately named to make it easier to know what it changes at a glance.")]
+    public class SMAPI_Extensions_MethodFinder : BaseMethodFinder
+    {
+        /*********
+        ** Accessors
+        *********/
+        /// <summary>A brief noun phrase indicating what the instruction finder matches.</summary>
+        public override string NounPhrase { get; } = "obsolete StardewModdingAPI.Extensions API";
+
+
+        /*********
+        ** Protected methods
+        *********/
+        /// <summary>Get whether a method reference should be rewritten.</summary>
+        /// <param name="instruction">The IL instruction.</param>
+        /// <param name="methodRef">The method reference.</param>
+        /// <param name="platformChanged">Whether the mod was compiled on a different platform.</param>
+        protected override bool IsMatch(Instruction instruction, MethodReference methodRef, bool platformChanged)
+        {
+            return methodRef.DeclaringType.FullName == "StardewModdingAPI.Extensions";
+        }
+    }
+}