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path: root/src/SMAPI/Metadata/InstructionMetadata.cs
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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.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()
            };
        }
    }
}