1 files changed, 55 insertions, 0 deletions
diff --git a/src/StardewModdingAPI/Framework/ModLoading/PlatformAssemblyMap.cs b/src/StardewModdingAPI/Framework/ModLoading/PlatformAssemblyMap.cs
new file mode 100644
index 00000000..463f45e8
--- /dev/null
+++ b/src/StardewModdingAPI/Framework/ModLoading/PlatformAssemblyMap.cs
@@ -0,0 +1,55 @@
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using Mono.Cecil;
+
+namespace StardewModdingAPI.Framework.ModLoading
+{
+    /// <summary>Metadata for mapping assemblies to the current <see cref="Platform"/>.</summary>
+    internal class PlatformAssemblyMap
+    {
+        /*********
+        ** Accessors
+        *********/
+        /****
+        ** Data
+        ****/
+        /// <summary>The target game platform.</summary>
+        public readonly Platform TargetPlatform;
+
+        /// <summary>The short assembly names to remove as assembly reference, and replace with the <see cref="Targets"/>. These should be short names (like "Stardew Valley").</summary>
+        public readonly string[] RemoveNames;
+
+        /****
+        ** Metadata
+        ****/
+        /// <summary>The assemblies to target. Equivalent types should be rewritten to use these assemblies.</summary>
+        public readonly Assembly[] Targets;
+
+        /// <summary>An assembly => reference cache.</summary>
+        public readonly IDictionary<Assembly, AssemblyNameReference> TargetReferences;
+
+        /// <summary>An assembly => module cache.</summary>
+        public readonly IDictionary<Assembly, ModuleDefinition> TargetModules;
+
+
+        /*********
+        ** Public methods
+        *********/
+        /// <summary>Construct an instance.</summary>
+        /// <param name="targetPlatform">The target game platform.</param>
+        /// <param name="removeAssemblyNames">The assembly short names to remove (like <c>Stardew Valley</c>).</param>
+        /// <param name="targetAssemblies">The assemblies to target.</param>
+        public PlatformAssemblyMap(Platform targetPlatform, string[] removeAssemblyNames, Assembly[] targetAssemblies)
+        {
+            // save data
+            this.TargetPlatform = targetPlatform;
+            this.RemoveNames = removeAssemblyNames;
+
+            // cache assembly metadata
+            this.Targets = targetAssemblies;
+            this.TargetReferences = this.Targets.ToDictionary(assembly => assembly, assembly => AssemblyNameReference.Parse(assembly.FullName));
+            this.TargetModules = this.Targets.ToDictionary(assembly => assembly, assembly => ModuleDefinition.ReadModule(assembly.Modules.Single().FullyQualifiedName));
+        }
+    }
+}