Ada source comparison

Ada source comparison

[Gautier Write-only-address]

Hi again. Is there a tool allowing to check if two texts represent
the same Ada source, eventually with a different formatting ?
TIA
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Re: Ada source comparison

[tmoran]

>Hi again. Is there a tool allowing to check if two texts represent
>the same Ada source, eventually with a different formatting ?
  a) run a pretty printer on both, then compare the pretty-printed
source files.
  b) compile both and compare the resulting object files (may differ
slightly in a timestamp but shouldn't differ much more than that).

Re: Ada source comparison

[Ted Dennison]

In article <g0s%6.142008$%i7.95843108@news1.rdc1.sfba.home.com>, tmoran@acm.org
says...
>
>>Hi again. Is there a tool allowing to check if two texts represent
>>the same Ada source, eventually with a different formatting ?
>  a) run a pretty printer on both, then compare the pretty-printed
>source files.
>  b) compile both and compare the resulting object files (may differ
>slightly in a timestamp but shouldn't differ much more than that).

c) run the OpenToken "Ada tokenizer test" on both, and compare the output. It'd
be pretty easy to modify the test to do the comparison automaticly.

---
T.E.D.    homepage   - http://www.telepath.com/dennison/Ted/TED.html
          home email - mailto:dennison@telepath.com

Re: Ada source comparison

[Jean-Pierre Rosen]

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"Gautier Write-only-address" <gautier_niouzes@hotmail.com> a �crit dans le message news:
mailman.993937083.30447.comp.lang.ada@ada.eu.org...
> Hi again. Is there a tool allowing to check if two texts represent
> the same Ada source, eventually with a different formatting ?
Pass your sources through Normalize (available from Adalog's components page, http://www.adalog.fr/compo2.htm), and compare the
outputs.
Normalize eliminates all formating and comments and puts the program text in all uppercase (except strings and characters of
course), so you can compare the meaningful part of your program.

--
---------------------------------------------------------
           J-P. Rosen (rosen@adalog.fr)
Visit Adalog's web site at http://www.adalog.fr

Re: Ada source comparison

[Gautier Write-only-address]

>   a) run a pretty printer on both, then compare the pretty-printed
>source files.
>   b) compile both and compare the resulting object files (may differ
>slightly in a timestamp but shouldn't differ much more than that).

Thank you for the ideas - in fact I already used b) but I was
looking for a more civilized method.
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Re: Ada source comparison

[Jeffrey Carter]

Gautier Write-only-address wrote:
> 
> >   a) run a pretty printer on both, then compare the pretty-printed
> >source files.
> >   b) compile both and compare the resulting object files (may differ
> >slightly in a timestamp but shouldn't differ much more than that).
> 
> Thank you for the ideas - in fact I already used b) but I was
> looking for a more civilized method.

I don't know if it's any more "civilized", but I have a program that
counts the number of source lines, comments, and terminator semicolons,
and calculates the sum mod 256 of the Character'Pos of all
non-whitespace, non-comment characters in the file. It's not intended
for this purpose, but one would expect the number of comments and
terminator semicolons to be the same if the only difference is
formatting. If the case of identifiers is the same, then the hash would
also be the same. While not guaranteed, it would be pretty rare for two
different units to have the same counts and hash.

Someone (Rosen?) has an uglifier that exists for the purpose of
comparing source files. You might want to try to find it.

-- 
Jeff Carter
"My brain hurts!"
Monty Python's Flying Circus

Re: Ada source comparison

[Gautier Write-only-address]

>   a) run a pretty printer on both, then compare the pretty-printed
>source files.

For that I would rather need an "ugly-printer".
But J-P Rosen has already had the idea, and here is
a pointer to that wonderful tool:

  http://www.adalog.fr/compo2.htm#Normalize

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Re: Ada source comparison

[Christoph Grein]

Use any lexical scanner, e.g. the one in OpenToken or the one in

http://home.T-Online.de/home/Christ-Usch.Grein/Ada/

and compare the sequence of Ada tokens.