[fpc-pascal] Enum RTTI

Jonas Maebe jonas.maebe at elis.ugent.be
Thu Nov 5 10:54:05 CET 2009

On 05 Nov 2009, at 09:32, Wimpie Nortje wrote:

> Is there any way to achieve the following easily:
> 1) for enum_first to enum_last do....

No, because succ/pred are not defined for sparse enums.

> 2) NumberOfItems(enum)

No. Even typeinfo() doesn't work for sparse enums.

> I very often have enums for which I want string descriptions.

As of FPC 2.4.0, you will be able to use

   s: string; { any kind of string will work

And afterwards 's' will contain the string representation of enumvar.  
In general, writestr is identical to the regular "write" procedure,  
except that it stores its output in a string (which you have to pass  
as first parameter). A similar "readstr" procedure will also be  


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