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200 lines
9.0 KiB
200 lines
9.0 KiB
#nullable enable
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using IPA.Config.Data;
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using IPA.Logging;
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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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using Boolean = IPA.Config.Data.Boolean;
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#if NET3
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using Net3_Proxy;
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using Array = Net3_Proxy.Array;
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#endif
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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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// emit takes no args, leaves Value at top of stack
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private static void EmitSerializeMember(ILGenerator il, SerializedMemberInfo member, LocalAllocator GetLocal, Action<ILGenerator> thisarg, Action<ILGenerator> parentobj)
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{
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EmitLoad(il, member, thisarg);
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var endSerialize = il.DefineLabel();
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if (member.AllowNull)
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{
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var passedNull = il.DefineLabel();
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il.Emit(OpCodes.Dup);
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if (member.IsNullable)
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il.Emit(OpCodes.Call, member.Nullable_HasValue.GetGetMethod());
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il.Emit(OpCodes.Brtrue, passedNull);
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il.Emit(OpCodes.Pop);
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il.Emit(OpCodes.Ldnull);
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il.Emit(OpCodes.Br, endSerialize);
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il.MarkLabel(passedNull);
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}
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if (member.IsNullable)
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il.Emit(OpCodes.Call, member.Nullable_Value.GetGetMethod());
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var memberConversionType = member.ConversionType;
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var targetType = GetExpectedValueTypeForType(memberConversionType);
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if (member.HasConverter)
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{
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using var stlocal = GetLocal.Allocate(member.Type);
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using var valLocal = GetLocal.Allocate(typeof(Value));
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il.Emit(OpCodes.Stloc, stlocal);
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il.BeginExceptionBlock();
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il.Emit(OpCodes.Ldsfld, member.ConverterField);
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il.Emit(OpCodes.Ldloc, stlocal);
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if (member.IsGenericConverter)
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{
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var toValueBase = member.ConverterBase.GetMethod(nameof(ValueConverter<int>.ToValue),
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new[] { member.ConverterTarget, typeof(object) });
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var toValue = member.Converter.GetMethods(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)
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.FirstOrDefault(m => m.GetBaseDefinition() == toValueBase) ?? toValueBase;
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il.Emit(OpCodes.Ldarg_0);
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il.Emit(OpCodes.Call, toValue);
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}
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else
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{
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var toValueBase = typeof(IValueConverter).GetMethod(nameof(IValueConverter.ToValue),
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new[] { typeof(object), typeof(object) });
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var toValue = member.Converter.GetMethods(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance)
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.FirstOrDefault(m => m.GetBaseDefinition() == toValueBase) ?? toValueBase;
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il.Emit(OpCodes.Box);
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il.Emit(OpCodes.Ldarg_0);
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il.Emit(OpCodes.Call, toValue);
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}
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il.Emit(OpCodes.Stloc, valLocal);
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il.BeginCatchBlock(typeof(Exception));
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EmitWarnException(il, "Error serializing member using converter");
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il.Emit(OpCodes.Ldnull);
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il.Emit(OpCodes.Stloc, valLocal);
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il.EndExceptionBlock();
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il.Emit(OpCodes.Ldloc, valLocal);
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}
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else if (targetType == typeof(Text))
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{ // only happens when arg is a string or char
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var TextCreate = typeof(Value).GetMethod(nameof(Value.Text));
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if (member.Type == typeof(char))
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{
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var strFromChar = typeof(char).GetMethod(nameof(char.ToString), new[] { typeof(char) });
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il.Emit(OpCodes.Call, strFromChar);
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}
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il.Emit(OpCodes.Call, TextCreate);
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}
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else if (targetType == typeof(Boolean))
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{
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var BoolCreate = typeof(Value).GetMethod(nameof(Value.Bool));
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il.Emit(OpCodes.Call, BoolCreate);
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}
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else if (targetType == typeof(Integer))
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{
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var IntCreate = typeof(Value).GetMethod(nameof(Value.Integer));
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EmitNumberConvertTo(il, IntCreate.GetParameters()[0].ParameterType, member.Type);
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il.Emit(OpCodes.Call, IntCreate);
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}
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else if (targetType == typeof(FloatingPoint))
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{
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var FloatCreate = typeof(Value).GetMethod(nameof(Value.Float));
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EmitNumberConvertTo(il, FloatCreate.GetParameters()[0].ParameterType, member.Type);
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il.Emit(OpCodes.Call, FloatCreate);
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}
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else if (targetType == typeof(List))
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{
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// TODO: impl this (enumerables)
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Logger.config.Warn($"Implicit conversions to {targetType} are not currently implemented");
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il.Emit(OpCodes.Pop);
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il.Emit(OpCodes.Ldnull);
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}
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else if (targetType == typeof(Map))
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{
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// TODO: support other aggregate types
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if (!memberConversionType.IsValueType)
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{
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// if it is a reference type, we assume that its a generated type implementing IGeneratedStore
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var IGeneratedStore_Serialize = typeof(IGeneratedStore).GetMethod(nameof(IGeneratedStore.Serialize));
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var IGeneratedStoreT_CopyFrom = typeof(IGeneratedStore<>).MakeGenericType(member.Type)
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.GetMethod(nameof(IGeneratedStore<object>.CopyFrom));
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if (!member.IsVirtual)
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{
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var noCreate = il.DefineLabel();
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using var stlocal = GetLocal.Allocate(member.Type);
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// first check to make sure that this is an IGeneratedStore, because we don't control assignments to it
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il.Emit(OpCodes.Dup);
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il.Emit(OpCodes.Isinst, typeof(IGeneratedStore));
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il.Emit(OpCodes.Brtrue_S, noCreate);
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il.Emit(OpCodes.Stloc, stlocal);
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EmitCreateChildGenerated(il, member.Type, parentobj);
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il.Emit(OpCodes.Dup);
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il.Emit(OpCodes.Ldloc, stlocal);
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il.Emit(OpCodes.Ldc_I4_0);
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il.Emit(OpCodes.Callvirt, IGeneratedStoreT_CopyFrom);
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il.Emit(OpCodes.Dup);
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il.Emit(OpCodes.Stloc, stlocal);
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EmitStore(il, member, il => il.Emit(OpCodes.Ldloc, stlocal), thisarg);
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il.MarkLabel(noCreate);
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}
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il.Emit(OpCodes.Callvirt, IGeneratedStore_Serialize);
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}
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else
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{ // generate serialization for value types
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using var valueLocal = GetLocal.Allocate(memberConversionType);
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var structure = ReadObjectMembers(memberConversionType);
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if (!structure.Any())
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{
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Logger.config.Warn($"Custom value type {memberConversionType.FullName} (when compiling serialization of" +
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$" {member.Name} on {member.Member.DeclaringType.FullName}) has no accessible members");
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il.Emit(OpCodes.Pop);
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}
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else
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{
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il.Emit(OpCodes.Stloc, valueLocal);
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}
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EmitSerializeStructure(il, structure, GetLocal, il => il.Emit(OpCodes.Ldloca, valueLocal), parentobj);
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}
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}
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il.MarkLabel(endSerialize);
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}
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private static void EmitSerializeStructure(ILGenerator il, IEnumerable<SerializedMemberInfo> structure, LocalAllocator GetLocal, Action<ILGenerator> thisarg, Action<ILGenerator> parentobj)
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{
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var MapCreate = typeof(Value).GetMethod(nameof(Value.Map));
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var MapAdd = typeof(Map).GetMethod(nameof(Map.Add));
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using var mapLocal = GetLocal.Allocate(typeof(Map));
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using var valueLocal = GetLocal.Allocate(typeof(Value));
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il.Emit(OpCodes.Call, MapCreate);
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il.Emit(OpCodes.Stloc, mapLocal);
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foreach (var mem in structure)
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{
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EmitSerializeMember(il, mem, GetLocal, thisarg, parentobj);
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il.Emit(OpCodes.Stloc, valueLocal);
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il.Emit(OpCodes.Ldloc, mapLocal);
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il.Emit(OpCodes.Ldstr, mem.Name);
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il.Emit(OpCodes.Ldloc, valueLocal);
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il.Emit(OpCodes.Call, MapAdd);
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}
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il.Emit(OpCodes.Ldloc, mapLocal);
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}
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}
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}
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