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178 lines
7.4 KiB
178 lines
7.4 KiB
using IPA.Config.Data;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using System.Reflection.Emit;
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using System.Text;
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using System.Threading.Tasks;
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namespace IPA.Config.Stores
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{
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internal static partial class GeneratedStoreImpl
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{
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internal delegate Value SerializeObject<T>(T obj);
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internal delegate T DeserializeObject<T>(Value val, object parent);
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private static class DelegateStore<T>
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{
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public static SerializeObject<T> Serialize;
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public static DeserializeObject<T> Deserialize;
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}
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internal static SerializeObject<T> GetSerializerDelegate<T>()
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=> DelegateStore<T>.Serialize ??= GetSerializerDelegateInternal<T>();
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private static SerializeObject<T> GetSerializerDelegateInternal<T>()
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{
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var type = typeof(T);
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#if DEBUG
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var defType = Module.DefineType($"{type.FullName}<SerializeTypeContainer>", TypeAttributes.Public | TypeAttributes.Sealed | TypeAttributes.Abstract);
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var dynMethod = defType.DefineMethod("SerializeType", MethodAttributes.Public | MethodAttributes.Static, typeof(Value), new[] { type });
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#else
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var dynMethod = new DynamicMethod($"SerializeType>>{type.FullName}", typeof(Value), new[] { type }, Module, true);
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#endif
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var structure = ReadObjectMembers(type);
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//CreateAndInitializeConvertersFor(type, structure);
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var loadObject = type.IsValueType
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? (Action<ILGenerator>)(il => il.Emit(OpCodes.Ldarga_S, 0))
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: il => il.Emit(OpCodes.Ldarg_0);
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var loadParent = type.IsValueType
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? (Action<ILGenerator>)(il => il.Emit(OpCodes.Ldnull))
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: loadObject;
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{
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var il = dynMethod.GetILGenerator();
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var GetLocal = MakeLocalAllocator(il);
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if (!type.IsValueType)
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{
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var notIGeneratedStore = il.DefineLabel();
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var IGeneratedStore_t = typeof(IGeneratedStore);
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var IGeneratedStore_Serialize = IGeneratedStore_t.GetMethod(nameof(IGeneratedStore.Serialize));
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il.Emit(OpCodes.Ldarg_0);
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il.Emit(OpCodes.Isinst, IGeneratedStore_t);
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il.Emit(OpCodes.Brfalse, notIGeneratedStore);
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il.Emit(OpCodes.Ldarg_0);
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il.Emit(OpCodes.Castclass, IGeneratedStore_t);
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il.Emit(OpCodes.Callvirt, IGeneratedStore_Serialize);
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il.Emit(OpCodes.Ret);
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il.MarkLabel(notIGeneratedStore);
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}
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EmitSerializeStructure(il, structure, GetLocal, loadObject, loadParent);
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il.Emit(OpCodes.Ret);
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}
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#if DEBUG
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defType.CreateType();
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return (SerializeObject<T>)Delegate.CreateDelegate(typeof(SerializeObject<T>), dynMethod);
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#else
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return (SerializeObject<T>)dynMethod.CreateDelegate(typeof(SerializeObject<T>));
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#endif
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}
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internal static DeserializeObject<T> GetDeserializerDelegate<T>()
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=> DelegateStore<T>.Deserialize ??= GetDeserializerDelegateInternal<T>();
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private static DeserializeObject<T> GetDeserializerDelegateInternal<T>()
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{
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var type = typeof(T);
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//var dynMethod = new DynamicMethod($"DeserializeType>>{type.FullName}", type, new[] { typeof(Value), typeof(object) }, Module, true);
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#if DEBUG
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var defType = Module.DefineType($"{type.FullName}<DeserializeTypeContainer>", TypeAttributes.Public | TypeAttributes.Sealed | TypeAttributes.Abstract);
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var dynMethod = defType.DefineMethod("DeserializeType", MethodAttributes.Public | MethodAttributes.Static, type, new[] { typeof(Value), typeof(object) });
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#else
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var dynMethod = new DynamicMethod($"DeserializeType>>{type.FullName}", type, new[] { typeof(Value), typeof(object) }, Module, true);
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#endif
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var structure = ReadObjectMembers(type);
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//CreateAndInitializeConvertersFor(type, structure);
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{
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var il = dynMethod.GetILGenerator();
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var GetLocal = MakeLocalAllocator(il);
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var IGeneratedStore_t = typeof(IGeneratedStore);
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var IGeneratedStore_Deserialize = IGeneratedStore_t.GetMethod(nameof(IGeneratedStore.Deserialize));
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void ParentObj(ILGenerator il)
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{
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il.Emit(OpCodes.Ldarg_1);
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il.Emit(OpCodes.Isinst, IGeneratedStore_t);
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}
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if (!type.IsValueType)
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{
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EmitCreateChildGenerated(il, type, ParentObj);
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il.Emit(OpCodes.Dup);
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il.Emit(OpCodes.Castclass, IGeneratedStore_t);
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il.Emit(OpCodes.Ldarg_0);
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il.Emit(OpCodes.Callvirt, IGeneratedStore_Deserialize);
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il.Emit(OpCodes.Ret);
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}
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else
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{
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var Map_t = typeof(Map);
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var Map_TryGetValue = Map_t.GetMethod(nameof(Map.TryGetValue));
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var Object_GetType = typeof(object).GetMethod(nameof(Object.GetType));
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var valueLocal = il.DeclareLocal(typeof(Value));
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var mapLocal = il.DeclareLocal(typeof(Map));
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var resultLocal = il.DeclareLocal(type);
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var nonNull = il.DefineLabel();
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il.Emit(OpCodes.Ldarg_0);
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il.Emit(OpCodes.Brtrue, nonNull);
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EmitLogError(il, "Attempting to deserialize null", tailcall: false);
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il.Emit(OpCodes.Ldloc, resultLocal);
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il.Emit(OpCodes.Ret);
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il.MarkLabel(nonNull);
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il.Emit(OpCodes.Ldarg_0);
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il.Emit(OpCodes.Isinst, Map_t);
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il.Emit(OpCodes.Dup); // duplicate cloned value
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il.Emit(OpCodes.Stloc, mapLocal);
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var notMapError = il.DefineLabel();
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il.Emit(OpCodes.Brtrue, notMapError);
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// handle error
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EmitLogError(il, $"Invalid root for deserializing {type.FullName}", tailcall: false,
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expected: il => EmitTypeof(il, Map_t), found: il =>
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{
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il.Emit(OpCodes.Ldarg_0);
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il.Emit(OpCodes.Callvirt, Object_GetType);
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});
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il.Emit(OpCodes.Ldloc, resultLocal);
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il.Emit(OpCodes.Ret);
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il.MarkLabel(notMapError);
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EmitDeserializeStructure(il, structure, mapLocal, valueLocal, GetLocal, il => il.Emit(OpCodes.Ldloca, resultLocal), ParentObj);
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il.Emit(OpCodes.Ldloc, resultLocal);
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il.Emit(OpCodes.Ret);
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}
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}
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#if DEBUG
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defType.CreateType();
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return (DeserializeObject<T>)Delegate.CreateDelegate(typeof(DeserializeObject<T>), dynMethod);
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#else
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return (DeserializeObject<T>)dynMethod.CreateDelegate(typeof(DeserializeObject<T>));
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#endif
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}
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}
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}
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