From: tmoran@acm.org
Subject: Re: Conditional compilation in Ada?
Date: Tue, 16 Nov 2004 19:06:30 GMT
Date: 2004-11-16T19:06:30+00:00 [thread overview]
Message-ID: <Wcsmd.94507$HA.85334@attbi_s01> (raw)
In-Reply-To: cndgus$9g6$1@korweta.task.gda.pl
>a small change in a fundamental data structure. Both versions of the
>data structure are mostly handled the same way (within thousands of
>lines of source code), but there are some 10 or 20 (number still
>growing) places where minor changes are necessary. What is worse,
You can use an "if" statement.
if Is_Version1 then ...
else ...
If you define Is_Version1 at the top, or in another small package, as
Is_Version1 : constant Boolean := True;
then an intelligent compiler will not generate any code for the impossible
Is_Version1 = False condition or the if-test itself. That is, it will be
identical in effect to C conditional compilation.
If the "minor changes" are similar, you could change the processing in
the many places in the huge module to instead call a subroutine and then
only make changes/ifs in the body of that subroutine (or subroutines).
next prev parent reply other threads:[~2004-11-16 19:06 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-16 18:30 Conditional compilation in Ada? jtg
2004-11-16 18:45 ` Marius Amado Alves
2004-11-16 20:41 ` Nick Roberts
2004-11-17 8:36 ` Alex R. Mosteo
2004-11-16 19:03 ` Jeffrey Carter
2004-11-16 19:13 ` Hyman Rosen
2004-11-16 19:41 ` Björn Lundin
2004-11-16 20:08 ` tmoran
2004-11-16 20:27 ` Hyman Rosen
2004-11-16 23:49 ` Jim Rogers
2004-11-16 20:43 ` Martin Dowie
2004-11-16 19:06 ` tmoran [this message]
2004-11-17 9:39 ` Adrien Plisson
2004-11-17 16:39 ` Jacob Sparre Andersen
2004-11-17 2:44 ` Steve
2004-11-17 20:30 ` Jeffrey Carter
2004-11-18 4:09 ` Steve
2004-11-18 6:49 ` Martin Dowie
2004-11-18 15:17 ` Georg Bauhaus
2004-11-18 19:12 ` Martin Dowie
2004-11-18 17:34 ` Jeffrey Carter
2004-11-18 17:44 ` Jeffrey Carter
2004-11-18 18:03 ` Alex R. Mosteo
2004-11-19 3:00 ` Steve
2004-11-19 21:35 ` Simon Wright
2004-11-20 2:56 ` Steve
2004-11-20 16:57 ` Simon Wright
2004-11-17 9:28 ` Martin Krischik
2004-11-17 13:39 ` Stephen Leake
2004-11-17 10:02 ` Frank Piron
2004-11-17 12:32 ` Georg Bauhaus
2004-11-17 14:44 ` Dmitry A. Kazakov
2004-11-18 15:23 ` Georg Bauhaus
2004-11-18 22:10 ` Brian May
2004-11-19 9:03 ` Martin Krischik
2004-11-20 17:31 ` Georg Bauhaus
2004-11-21 9:14 ` Martin Krischik
2004-12-12 0:36 ` Lionel Draghi
2004-12-12 0:17 ` How to switch off those damm warnings about unknows pragma Lionel Draghi
2004-12-13 11:10 ` Georg Bauhaus
2004-12-13 15:07 ` Peter Amey
2004-11-20 1:05 ` Conditional compilation in Ada? Dr. Adrian Wrigley
2004-11-20 17:25 ` Georg Bauhaus
2004-11-23 1:15 ` Arthur Schwarz
2004-11-23 15:42 ` skidmarks
2004-11-17 12:27 ` Marin David Condic
-- strict thread matches above, loose matches on Subject: below --
2004-11-19 9:13 Christoph Karl Walter Grein
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