Re: Implementing GOTO/GOSUB

[Rici Lake <lua@...>]

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
:)