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From: "G.B." <bauhaus@futureapps.invalid>
Newsgroups: comp.lang.ada
Subject: Re: Running a preprocessor from GPS?
Date: Tue, 28 Jul 2015 15:06:28 +0200
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Date: 2015-07-28T15:06:28+02:00
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On 28.07.15 14:06, EGarrulo wrote:
> On Tuesday, July 28, 2015 at 1:51:45 PM UTC+2, Dmitry A. Kazakov wrote:
>> Because *What* must be evaluated lazily, which is not possible in Ada. That
>> is why the only way to do it is, IMO, as Randy had suggested:
>>
>>     if Is_On (Trace_Topic) then
>>        Trace (Trace_Topic, <complicated expression>);
>>     end if;
>
> But this means a 2/1 ratio of noise to signal.  The other way to accomplish this would be by means of a preprocessor, hence my question about how to integrate a preprocessor in the Ada build chain.

Another option is to use a folding editor that
hides things you do not currently wish to see.
It's like running a preprocessor all the time.