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From: =?utf-8?Q?Yannick_Duch=C3=AAne_=28Hibou57?=
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Newsgroups: comp.lang.ada
Subject: Re: SPARK POGS: List the rules used by the Simplifier
Date: Fri, 13 Aug 2010 21:41:32 +0200
Organization: Ada At Home
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Date: 2010-08-13T21:41:32+02:00
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Le Fri, 13 Aug 2010 21:04:00 +0200, Phil Thornley  =

<phil.jpthornley@gmail.com> a =C3=A9crit:
> No - *.rls files are produced by the Examiner, so it doesn't really
> matter which of the rules in these files are used (in fact most of
> them are not used).
>
> These summaries are of the user rules - in *.rlu files - which are
> hand coded and so have to be reviewed and maintained as the code
> develops.  It's useful to be able to keep these rules to a minimum to
> keep the maintenance load down.

Oops, so this can be seen as an extraction of some of the reports which =
 =

belongs to *.slg files ? (the ones where steps of proof are exposed, lik=
e  =

=E2=80=9CApplied substitution rule multiply_rules(3)=E2=80=9D and etc). =
Please, don't kick  =

if I'm still wrong.

> (And, for example, one of the changes with SPARK 2010 will remove the
> need for user rules for function return annotations, so these
> summaries will help to identify which those rules are.)
Will see (I am not aware of these change so far).

> In fact this information is already in the POGS summary - but it is
> given for each operation, ahead of the table showing each VC in the
> operation, and the way that it is presented makes it tedious to
> identify which rules have/have not been used - particularly for
> 'package' rule files that might be used by a number of different
> operations.
OK (I don't use POGS so much, I mostly read *.siv files... and I am not =
 =

using SPARK every day)

By the way, if you want to join, I am to open a new thread about =E2=80=9C=
SPARK  =

understand me very well... me neither=E2=80=9D :D


-- =

There is even better than a pragma Assert: a SPARK --# check.
--# check C and WhoKnowWhat and YouKnowWho;
--# assert Ada;
--  i.e. forget about previous premises which leads to conclusion
--  and start with new conclusion as premise.