[Gambas-user] Gambas has Gosub now!

[Benoît Minisini]

Hi,

I have just succeeded (I think) in implementing the old Basic GOSUB 
instruction in Gambas in revision #4530.

I did that, because it is faster than using a plain little function, if 
you just need to call a small piece code without needing a specific 
context nor arguments.

The syntax is the same as the GOTO instruction (with the same 
restrictions on the label):

	GOSUB <label>

To return from a GOSUB, you must use the RETURN instruction alone.

	<label>:
         ...
         RETURN

Consequently, you cannot use RETURN to return from a subroutine if there 
is a pending GOSUB. A little annoyance.

If the function end (or a CATCH instruction) is encountered, the 
function is ended like before, even if there are pending GOSUB. In other 
words, returning from a GOSUB is always explicit.

Enjoy it!

-- 
Benoît Minisini