1 files changed, 101 insertions, 0 deletions
diff --git a/src/SMAPI/Metadata/InstructionMetadata.cs b/src/SMAPI/Metadata/InstructionMetadata.cs
new file mode 100644
index 00000000..3346f1ac
--- /dev/null
+++ b/src/SMAPI/Metadata/InstructionMetadata.cs
@@ -0,0 +1,101 @@
+using System.Collections.Generic;
+using Microsoft.Xna.Framework.Graphics;
+using StardewModdingAPI.AssemblyRewriters;
+using StardewModdingAPI.Events;
+using StardewModdingAPI.Framework.ModLoading;
+using StardewModdingAPI.Framework.ModLoading.Finders;
+using StardewModdingAPI.Framework.ModLoading.Rewriters;
+using StardewValley;
+
+namespace StardewModdingAPI.Metadata
+{
+    /// <summary>Provides CIL instruction handlers which rewrite mods for compatibility and throw exceptions for incompatible code.</summary>
+    internal class InstructionMetadata
+    {
+        /*********
+        ** Public methods
+        *********/
+        /// <summary>Get rewriters which detect or fix incompatible CIL instructions in mod assemblies.</summary>
+        public IEnumerable<IInstructionHandler> GetHandlers()
+        {
+            return new IInstructionHandler[]
+            {
+                /****
+                ** throw exception for incompatible code
+                ****/
+                // changes in Stardew Valley 1.2 (with no rewriters)
+                new FieldFinder("StardewValley.Item", "set_Name", InstructionHandleResult.NotCompatible),
+
+                // APIs removed in SMAPI 1.9
+                new TypeFinder("StardewModdingAPI.Advanced.ConfigFile", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.Advanced.IConfigFile", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.Entities.SPlayer", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.Extensions", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.Inheritance.SGame", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.Inheritance.SObject", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.LogWriter", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.Manifest", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.Version", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.GraphicsEvents", "DrawDebug", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.GraphicsEvents", "DrawTick", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.GraphicsEvents", "OnPostRenderHudEventNoCheck", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.GraphicsEvents", "OnPostRenderGuiEventNoCheck", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.GraphicsEvents", "OnPreRenderHudEventNoCheck", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.GraphicsEvents", "OnPreRenderGuiEventNoCheck", InstructionHandleResult.NotCompatible),
+
+                // APIs removed in SMAPI 2.0
+                new TypeFinder("StardewModdingAPI.Command", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.Config", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.Log", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.GameEvents", "Initialize", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.GameEvents", "LoadContent", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.GameEvents", "GameLoaded", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.GameEvents", "FirstUpdateTick", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.PlayerEvents", "LoadedGame", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.PlayerEvents", "FarmerChanged", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.TimeEvents", "DayOfMonthChanged", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.TimeEvents", "YearOfGameChanged", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.TimeEvents", "SeasonOfYearChanged", InstructionHandleResult.NotCompatible),
+                new EventFinder("StardewModdingAPI.Events.TimeEvents", "OnNewDay", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.Events.EventArgsCommand", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.Events.EventArgsFarmerChanged", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.Events.EventArgsLoadedGameChanged", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.Events.EventArgsNewDay", InstructionHandleResult.NotCompatible),
+                new TypeFinder("StardewModdingAPI.Events.EventArgsStringChanged", InstructionHandleResult.NotCompatible),
+                new PropertyFinder("StardewModdingAPI.Mod", "PathOnDisk", InstructionHandleResult.NotCompatible),
+                new PropertyFinder("StardewModdingAPI.Mod", "BaseConfigPath", InstructionHandleResult.NotCompatible),
+                new PropertyFinder("StardewModdingAPI.Mod", "PerSaveConfigFolder", InstructionHandleResult.NotCompatible),
+                new PropertyFinder("StardewModdingAPI.Mod", "PerSaveConfigPath", InstructionHandleResult.NotCompatible),
+
+                /****
+                ** detect code which may impact game stability
+                ****/
+                new TypeFinder("Harmony.HarmonyInstance", InstructionHandleResult.DetectedGamePatch),
+                new TypeFinder("System.Runtime.CompilerServices.CallSite", InstructionHandleResult.DetectedDynamic),
+                new FieldFinder(typeof(SaveGame).FullName, nameof(SaveGame.serializer), InstructionHandleResult.DetectedSaveSerialiser),
+                new FieldFinder(typeof(SaveGame).FullName, nameof(SaveGame.farmerSerializer), InstructionHandleResult.DetectedSaveSerialiser),
+                new FieldFinder(typeof(SaveGame).FullName, nameof(SaveGame.locationSerializer), InstructionHandleResult.DetectedSaveSerialiser),
+
+                /****
+                ** rewrite CIL to fix incompatible code
+                ****/
+                // crossplatform
+                new MethodParentRewriter(typeof(SpriteBatch), typeof(SpriteBatchMethods), onlyIfPlatformChanged: true),
+
+                // Stardew Valley 1.2
+                new FieldToPropertyRewriter(typeof(Game1), nameof(Game1.activeClickableMenu)),
+                new FieldToPropertyRewriter(typeof(Game1), nameof(Game1.currentMinigame)),
+                new FieldToPropertyRewriter(typeof(Game1), nameof(Game1.gameMode)),
+                new FieldToPropertyRewriter(typeof(Game1), nameof(Game1.player)),
+                new FieldReplaceRewriter(typeof(Game1), "borderFont", nameof(Game1.smallFont)),
+                new FieldReplaceRewriter(typeof(Game1), "smoothFont", nameof(Game1.smallFont)),
+
+                // SMAPI 1.9
+                new TypeReferenceRewriter("StardewModdingAPI.Inheritance.ItemStackChange", typeof(ItemStackChange)),
+
+                // SMAPI 2.0
+                new VirtualEntryCallRemover() // Mod.Entry changed from virtual to abstract in SMAPI 2.0, which breaks the few mods which called base.Entry()
+            };
+        }
+    }
+}