Re: GNUstep.h (was: Re: Setter Gettor method style)

[Tyson Whitehead]

Sir Raorn wrote:

> On Tue, Aug 06, 2002 at 10:20:49PM +0200, Lars Sonchocky-Helldorf wrote:
>  
>
> > #define TEST_AUTORELEASE(object) ({ if (object) [object autorelease]; })
> >    
> I'd suggest this variant:
>
> #define TEST_AUTORELEASE(object) do{ if (object) [object autorelease]; }while(0)
>
> And the same for other multioperator defines...
>
>  
Sorry, I'm not very knowledgable about Objective C, so these may be 
stupid questions.

How do you expect the "do{...}while(0)" loop to ever end without an 
internal break or goto statement?

Shouldn't it be something like "while(object) [object autorelease]"?

Furthermore, how does the status of object change from repeatedly 
calling autorelease?  I thought it just added it to the autorelease pool 
and then it would be appropriately adjusted when the parent (i.e. 
function call stack wise) returned.

-T

--
Tyson Whitehead  (-twhitehe@uwo.ca -- WSC-)
Computer Engineer                          Dept. of Applied Mathematics,
Graduate Student- Applied Mathematics      University of Western Ontario,
GnuPG Key ID# 0x8A2AB5D8                   London, Ontario, Canada