[fpc-pascal] Set size limit

[Jonas Maebe]

On 10 Mar 2013, at 15:00, Juha Manninen wrote:

> There are no 8-bit CPUs
> supported by FPC that would justify it.

It is unrelated to 8 bit cpus. Even Turbo Pascal 1.0 ran on a 16 bit cpu.

> I am annoyed by some LCL bugs which are there only for Delphi compatibility.
> This issue is similar.

It is not.

> This kind of artificial limitation could easily be fixed.
> I think it should apply for {$mode objfpc} only.

There is a already a test for larger set support: http://svn.freepascal.org/svn/fpc/trunk/tests/test/tset6.pp

Nobody has worked yet on implementing it, but if anyone thinks it's easy to do, please go ahead. For larger sets, especially if they are sparse, a simple hashtable-based class would probably be much faster and memory efficient than simply extending the default implementation though. With operator overloading and generics you might even be able to use more or less the same syntax as with built-in sets.


Jonas