1 files changed, 35 insertions, 0 deletions
diff --git a/src/SMAPI/Framework/ModLoading/IncompatibleInstructionException.cs b/src/SMAPI/Framework/ModLoading/IncompatibleInstructionException.cs
new file mode 100644
index 00000000..17ec24b1
--- /dev/null
+++ b/src/SMAPI/Framework/ModLoading/IncompatibleInstructionException.cs
@@ -0,0 +1,35 @@
+using System;
+
+namespace StardewModdingAPI.Framework.ModLoading
+{
+    /// <summary>An exception raised when an incompatible instruction is found while loading a mod assembly.</summary>
+    internal class IncompatibleInstructionException : Exception
+    {
+        /*********
+        ** Accessors
+        *********/
+        /// <summary>A brief noun phrase which describes the incompatible instruction that was found.</summary>
+        public string NounPhrase { get; }
+
+
+        /*********
+        ** Public methods
+        *********/
+        /// <summary>Construct an instance.</summary>
+        /// <param name="nounPhrase">A brief noun phrase which describes the incompatible instruction that was found.</param>
+        public IncompatibleInstructionException(string nounPhrase)
+            : base($"Found an incompatible CIL instruction ({nounPhrase}).")
+        {
+            this.NounPhrase = nounPhrase;
+        }
+
+        /// <summary>Construct an instance.</summary>
+        /// <param name="nounPhrase">A brief noun phrase which describes the incompatible instruction that was found.</param>
+        /// <param name="message">A message which describes the error.</param>
+        public IncompatibleInstructionException(string nounPhrase, string message)
+            : base(message)
+        {
+            this.NounPhrase = nounPhrase;
+        }
+    }
+}