Re: Implementing GOTO/GOSUB

[Asko Kauppi <asko.kauppi@...>]

:)

I forgot to mention the obvious, that multiple GOSUB levels can easily 
be added by using 'table.insert()' with __retline.  And I am _not_ 
taking this very seriously, merely as a hackable challenge.  Over and 
out.

-ak

13.9.2004 kello 22:05, Rici Lake kirjoitti:


> On 13-Sep-04, at 1:36 PM, Asko Kauppi wrote:
>
> > Okay, here's a more polished version (still, not tried). If someone 
> > uses it, make sure cpp doesn't add #pragma's or other such stuff in 
> > its output (I've used 'cpp -P -xassembler-with-cpp').
> >
> > 	local __retline
> >
> > 	#define __GOSUB(xx)  __retline='#'.. #__LINE__; __GOTO=xx; 
> > __LABEL='#'.. #__LINE__
> > 	#define __RETURN     __GOTO=__retline
> >
> > I know that the '__GOSUB()' syntax and '__GOTO=' syntaxes are nastily 
> > different; don't know a fix for this.. :(
> >
> > -ak
>
> As long as we're retrofitting Lua here, what about 
> <http://www.fortran.com/fortran/come_from.html> ?
>
> The expressiveness of the last example is very hard to match.
>
> Rici
> :)