On 15.04.2018 0:05, Martok wrote:
All this is not quite as easy to get right as it seems on the surface. But I do like the the "v is TEnum" operator from the other side of this thread, regardless of where this goes...
I don't want to force FPC to any direction. I just want to have a simple built-in method to validate an ordinal value against an enum. Be it the AS/IS operator or a new compiler intrinsic. I chose the AS/IS operators because they are easier to implement for me.
It should not change any kind of religion or anything else, they are just helpful tools.
Please note that I want to support all ordinal values on the left side of the operator. You can then validate a value of variable of the enum type itself. Then you can use code like:
var E: TMyEnum; // ... if not (E is TMyEnum) then // handle your error here else case E of one: two: else // handle possible valid values not listed above end; That should be OK for all of us. Ondrej _______________________________________________ fpc-devel maillist - firstname.lastname@example.org http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel