private static Func <object[], object> CreateImpl(Type valueTupleType)
{
var genericTypeArguments = valueTupleType.GenericTypeArguments;
var createVT = CommonType.GetValueTupleCreateMethod(genericTypeArguments);
var dynamicMethod = new DynamicMethod("ValueTupleConvert_" + Guid.NewGuid().ToString("N"), CommonType.Object, new[] { CommonType.ObjectArray });
var ilGen = dynamicMethod.GetILGenerator();
for (int i = 0; i < genericTypeArguments.Length; i++)
{
Type argType = genericTypeArguments[i];
ilGen.LoadArg(0);
ilGen.LoadInt32(i);
ilGen.LoadElement(CommonType.Object);
if (argType.IsValueType)
{
ilGen.Unbox(argType);
ilGen.LoadValueIndirect(argType);
}
}
ilGen.Emit(OpCodes.Call, createVT);
ilGen.Box(valueTupleType);
ilGen.Return();
return((Func <object[], object>)dynamicMethod.CreateDelegate(typeof(Func <object[], object>)));
}
