public XdrPropertySerializationDescriptor(PropertyInfo prop)
{
Property = prop;
PrimitiveType = prop.PropertyType;
if (prop.GetMethod == null)
{
throw new InvalidOperationException($"Property {FullPropertyName} does not have getter and cannot be serialized.");
}
if (prop.SetMethod == null)
{
throw new InvalidOperationException($"Property {FullPropertyName} does not have setter and cannot be serialized.");
}
if (PrimitiveType == typeof(object))
{
throw new InvalidOperationException($"Generalized object serialization not supported. Check {FullPropertyName}.");
}
//determine optional property
IsOptional = prop.GetCustomAttribute <XdrFieldAttribute>().Optional;
//if this is a primitive type, we are done
if (PrimitiveValueTypes.Contains(PrimitiveType))
{
return;
}
//check if it's a serializable contract by itself
if (IsXdrContractType(PrimitiveType))
{
GenericArgument = PrimitiveType;
PrimitiveType = typeof(object);
return;
}
//handle enums
if (PrimitiveType.IsEnum)
{
//verify enum underlying type
EnsureValidEnumType(PrimitiveType);
//and treat it as int32
PrimitiveType = typeof(int);
return;
}
//handle nullable types
if (PrimitiveType.GetGenericTypeDefinition() == typeof(Nullable <>))
{
var valueType = PrimitiveType.GetGenericArguments().SingleOrDefault();
if (IsPrimitiveValueType(valueType))
{
IsOptional = true;
IsNullable = true;
PrimitiveType = valueType;
return;
}
}
//handle lists serialization
if (PrimitiveType.GetGenericTypeDefinition() == typeof(List <>))
{
var listGenericType = PrimitiveType.GetGenericArguments().SingleOrDefault();
if (IsXdrContractType(listGenericType) || IsPrimitiveValueType(listGenericType))
{
PrimitiveType = typeof(List <>);
GenericArgument = listGenericType;
return;
}
}
//no suitable primitive serializer found
throw new InvalidOperationException($"{PrimitiveType.FullName} XDR serialization is not supported. Check {FullPropertyName}.");
}