public ConstructorManagedDefinition(ConstructorInfo constructorInfo)
: base(constructorInfo.DeclaringType)
{
if (constructorInfo == null)
{
throw new ArgumentNullException(nameof(constructorInfo));
}
var managedAttribute = TargetType.GetCustomAttribute <ManagedAttribute>();
CreateManagedException.Check(managedAttribute != null, CreateManagedError.NotManagedClass);
ManagedType = managedAttribute.ManagedType;
NeedParameterTypes = constructorInfo.GetParameterTypes();
var dynamicMethod = new DynamicMethod(GeneratorName, typeof(object), new[] { typeof(object[]) }, TargetType);
var il = dynamicMethod.GetILGenerator();
for (int i = 0; i < NeedParameterTypes.Length; i++)
{
il.Emit(Ldarg_0);
il.Emit(Ldc_I4, i);
il.Emit(Ldelem_Ref);
var parameterType = NeedParameterTypes[i];
if (parameterType.IsValueType)
{
il.Emit(Unbox_Any, parameterType);
}
else
{
il.Emit(Castclass, parameterType);
}
}
il.Emit(Newobj, constructorInfo);
il.Emit(Ret);
ManagedGenerator = dynamicMethod.CreateDelegate(typeof(Generator)) as Generator;
}