That's it, thanks!
Brgds,
Viktor
On Sun, Jun 21, 2009 at 12:33 PM, Przemyslaw Czerpak<dru...@acn.waw.pl> wrote:
> On Sun, 21 Jun 2009, Szak�ts Viktor wrote:
>
> Hi,
>
>> Can this expression be optimized by compiler to NOP:
>> Do( NIL )
>> I'm trying to make this work in every situation:
>> #if defined( __HB_OUTDEBUG__ ) .AND. defined( __PLATFORM__WINDOWS )
>> #xtranslate HB_OUTDEBUG( [<x>] ) => WAPI_OUTPUTDEBUGSTRING( <x> )
>> #else
>> #xtranslate HB_OUTDEBUG( [<x>] ) => ( Do( NIL ) )
>> #endif
>> Something would be needed which is converted to
>> a complete dummy expression to allow usage in
>> codeblocks, but which would be optimized out by
>> the compiler to NIL or nothing depending on the
>> situation.
>> Or maybe there are better ideas for this.
>
> #if defined( __HB_OUTDEBUG__ ) .AND. defined( __PLATFORM__WINDOWS )
> #xtranslate HB_OUTDEBUG( [<x,...>] ) => WAPI_OUTPUTDEBUGSTRING( <x> )
> #else
> #xtranslate HB_OUTDEBUG( [<x,...>] ) => IIF(.T.,,)
> #endif
>
> IIF(.T.,,) is optimized by compiler to nothing (fully stripped) in
> code like:
>
> IIF(.T.,,)
> ? IIF(.T.,,)
>
> and to NIL in code like:
>
> {|| IIF(.T.,,) }
> x := IIF(.T.,,)
> ? IIF(.T.,,), "next"
>
> best regards,
> Przemek
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>
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