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206 lines
9.4 KiB
206 lines
9.4 KiB
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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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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#region Logs
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private static readonly MethodInfo LogErrorMethod = typeof(GeneratedStoreImpl).GetMethod(nameof(LogError), BindingFlags.NonPublic | BindingFlags.Static);
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internal static void LogError(Type expected, Type found, string message)
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{
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Logger.config.Notice($"{message}{(expected == null ? "" : $" (expected {expected}, found {found?.ToString() ?? "null"})")}");
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}
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private static readonly MethodInfo LogWarningMethod = typeof(GeneratedStoreImpl).GetMethod(nameof(LogWarning), BindingFlags.NonPublic | BindingFlags.Static);
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internal static void LogWarning(string message)
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{
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Logger.config.Warn(message);
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}
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private static readonly MethodInfo LogWarningExceptionMethod = typeof(GeneratedStoreImpl).GetMethod(nameof(LogWarningException), BindingFlags.NonPublic | BindingFlags.Static);
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internal static void LogWarningException(Exception exception)
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{
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Logger.config.Warn(exception);
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}
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#endregion
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private delegate LocalBuilder GetLocal(Type type, int idx = 0);
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private static GetLocal MakeGetLocal(ILGenerator il)
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{ // TODO: improve this shit a bit so that i can release a hold of a variable and do more auto managing
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var locals = new List<LocalBuilder>();
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LocalBuilder GetLocal(Type ty, int i = 0)
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{
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var builder = locals.Where(b => b.LocalType == ty).Skip(i).FirstOrDefault();
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if (builder == null)
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{
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builder = il.DeclareLocal(ty);
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locals.Add(builder);
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}
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return builder;
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}
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return GetLocal;
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}
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private static void EmitLoad(ILGenerator il, SerializedMemberInfo member, Action<ILGenerator> thisarg = null)
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{
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if (thisarg == null)
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thisarg = il => il.Emit(OpCodes.Ldarg_0);
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thisarg(il); // load this
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if (member.IsField)
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il.Emit(OpCodes.Ldfld, member.Member as FieldInfo);
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else
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{ // member is a property
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var prop = member.Member as PropertyInfo;
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var getter = prop.GetGetMethod();
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if (getter == null) throw new InvalidOperationException($"Property {member.Name} does not have a getter and is not ignored");
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il.Emit(OpCodes.Call, getter);
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}
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}
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private static void EmitStore(ILGenerator il, SerializedMemberInfo member, Action<ILGenerator> value)
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{
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il.Emit(OpCodes.Ldarg_0); // load this
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value(il);
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if (member.IsField)
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il.Emit(OpCodes.Stfld, member.Member as FieldInfo);
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else
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{ // member is a property
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var prop = member.Member as PropertyInfo;
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var setter = prop.GetSetMethod();
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if (setter == null) throw new InvalidOperationException($"Property {member.Name} does not have a setter and is not ignored");
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il.Emit(OpCodes.Call, setter);
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}
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}
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private static void EmitWarnException(ILGenerator il, string v)
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{
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il.Emit(OpCodes.Ldstr, v);
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il.Emit(OpCodes.Call, LogWarningMethod);
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il.Emit(OpCodes.Call, LogWarningExceptionMethod);
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}
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private static void EmitLogError(ILGenerator il, string message, bool tailcall = false, Action<ILGenerator> expected = null, Action<ILGenerator> found = null)
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{
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if (expected == null) expected = il => il.Emit(OpCodes.Ldnull);
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if (found == null) found = il => il.Emit(OpCodes.Ldnull);
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expected(il);
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found(il);
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il.Emit(OpCodes.Ldstr, message);
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if (tailcall) il.Emit(OpCodes.Tailcall);
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il.Emit(OpCodes.Call, LogErrorMethod);
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}
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private static readonly MethodInfo Type_GetTypeFromHandle = typeof(Type).GetMethod(nameof(Type.GetTypeFromHandle));
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private static void EmitTypeof(ILGenerator il, Type type)
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{
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il.Emit(OpCodes.Ldtoken, type);
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il.Emit(OpCodes.Call, Type_GetTypeFromHandle);
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}
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private static readonly Type IDisposable_t = typeof(IDisposable);
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private static readonly MethodInfo IDisposable_Dispose = IDisposable_t.GetMethod(nameof(IDisposable.Dispose));
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private static readonly Type Decimal_t = typeof(decimal);
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private static readonly ConstructorInfo Decimal_FromFloat = Decimal_t.GetConstructor(new[] { typeof(float) });
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private static readonly ConstructorInfo Decimal_FromDouble = Decimal_t.GetConstructor(new[] { typeof(double) });
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private static readonly ConstructorInfo Decimal_FromInt = Decimal_t.GetConstructor(new[] { typeof(int) });
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private static readonly ConstructorInfo Decimal_FromUInt = Decimal_t.GetConstructor(new[] { typeof(uint) });
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private static readonly ConstructorInfo Decimal_FromLong = Decimal_t.GetConstructor(new[] { typeof(long) });
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private static readonly ConstructorInfo Decimal_FromULong = Decimal_t.GetConstructor(new[] { typeof(ulong) });
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private static void EmitNumberConvertTo(ILGenerator il, Type to, Type from)
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{ // WARNING: THIS USES THE NO-OVERFLOW OPCODES
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if (to == from) return;
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if (to == Decimal_t)
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{
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if (from == typeof(float)) il.Emit(OpCodes.Newobj, Decimal_FromFloat);
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else if (from == typeof(double)) il.Emit(OpCodes.Newobj, Decimal_FromDouble);
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else if (from == typeof(long)) il.Emit(OpCodes.Newobj, Decimal_FromLong);
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else if (from == typeof(ulong)) il.Emit(OpCodes.Newobj, Decimal_FromULong);
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else if (from == typeof(int)) il.Emit(OpCodes.Newobj, Decimal_FromInt);
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else if (from == typeof(uint)) il.Emit(OpCodes.Newobj, Decimal_FromUInt);
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else if (from == typeof(IntPtr))
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{
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EmitNumberConvertTo(il, typeof(long), from);
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EmitNumberConvertTo(il, to, typeof(long));
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}
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else if (from == typeof(UIntPtr))
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{
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EmitNumberConvertTo(il, typeof(ulong), from);
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EmitNumberConvertTo(il, to, typeof(ulong));
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}
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else
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{ // if the source is anything else, we first convert to int because that can contain all other values
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EmitNumberConvertTo(il, typeof(int), from);
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EmitNumberConvertTo(il, to, typeof(int));
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};
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}
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else if (from == Decimal_t)
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{
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if (to == typeof(IntPtr))
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{
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EmitNumberConvertTo(il, typeof(long), from);
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EmitNumberConvertTo(il, to, typeof(long));
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}
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else if (to == typeof(UIntPtr))
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{
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EmitNumberConvertTo(il, typeof(ulong), from);
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EmitNumberConvertTo(il, to, typeof(ulong));
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}
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else
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{
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var method = Decimal_t.GetMethod($"To{to.Name}"); // conveniently, this is the pattern of the to* names
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il.Emit(OpCodes.Call, method);
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}
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}
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else if (to == typeof(IntPtr)) il.Emit(OpCodes.Conv_I);
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else if (to == typeof(UIntPtr)) il.Emit(OpCodes.Conv_U);
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else if (to == typeof(sbyte)) il.Emit(OpCodes.Conv_I1);
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else if (to == typeof(byte)) il.Emit(OpCodes.Conv_U1);
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else if (to == typeof(short)) il.Emit(OpCodes.Conv_I2);
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else if (to == typeof(ushort)) il.Emit(OpCodes.Conv_U2);
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else if (to == typeof(int)) il.Emit(OpCodes.Conv_I4);
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else if (to == typeof(uint)) il.Emit(OpCodes.Conv_U4);
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else if (to == typeof(long)) il.Emit(OpCodes.Conv_I8);
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else if (to == typeof(ulong)) il.Emit(OpCodes.Conv_U8);
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else if (to == typeof(float))
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{
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if (from == typeof(byte)
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|| from == typeof(ushort)
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|| from == typeof(uint)
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|| from == typeof(ulong)
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|| from == typeof(UIntPtr)) il.Emit(OpCodes.Conv_R_Un);
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il.Emit(OpCodes.Conv_R4);
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}
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else if (to == typeof(double))
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{
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if (from == typeof(byte)
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|| from == typeof(ushort)
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|| from == typeof(uint)
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|| from == typeof(ulong)
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|| from == typeof(UIntPtr)) il.Emit(OpCodes.Conv_R_Un);
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il.Emit(OpCodes.Conv_R8);
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}
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}
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private static void EmitCreateChildGenerated(ILGenerator il, Type childType)
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{
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var method = CreateGParent.MakeGenericMethod(childType);
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il.Emit(OpCodes.Ldarg_0);
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il.Emit(OpCodes.Call, method);
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}
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}
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}
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