30 Sep
2014
30 Sep
'14
4:30 p.m.
Hey,
this is actually a bit different issue. The PetitParser now reports the
furthest failure, not the last failure, as it is supposed to give more
precise error locations. And the furthest failure is remembered in
PPContext, if you don't specify the context, you can't remember it.
Therefore the method is deprecated.
I am not sure, if it is a good approach (I would rather see reporting
errors in a proper way), but I un-deprecated that, so all the tests from
PetitStepExpress package pass.
Cheers,
Jan
On 30 September 2014 16:08, Nicolas Anquetil <nicolas.anquetil(a)inria.fr>
wrote:
just tried it and there is another error (method deprecation) in
PPExpressIdentifierParser>>failureTokenFrom: token
^ PPFailure message: 'Identifier expected' at: token position
no time to look at it now, but just substituting message:context: to
message:at: does not work
nicolas
On 30/09/2014 15:46, Jan Kurš wrote:
Hey,
I added #position: and #contents selectors to the PPContext. The script
should pass now. Please, let me know, if there are any other problems.
Originally, I decided not to include these selectors so that the
developers of new parser combinators are aware of the changes in the
PetitParser (and the integration of the PPContext is reasonably easy). Now,
it seems it will be better to include these selectors to make it easy for
the users of PetitParser.
Cheers,
Jan
On 30 September 2014 10:27, Tudor Girba <tudor(a)tudorgirba.com> wrote:
Hi Usman,
Thanks for the script.
@Jan: could you look at it? I do not think it is a big problem.
Doru
On Tue, Sep 30, 2014 at 10:22 AM, Usman Bhatti <usman.bhatti(a)gmail.com>
wrote:
_______________________________________________
Moose-dev mailing
listMoose-dev@iam.unibe.chhttps://www.iam.unibe.ch/mailman/listinfo/moose-dev
_______________________________________________
Moose-dev mailing list
Moose-dev(a)iam.unibe.ch
https://www.iam.unibe.ch/mailman/listinfo/moose-dev
Hi Doru,
We are using Platyplus to generate a language grammar and it uses
PetitParser for this purpose. When trying to synchronize the definitions
with Platyplus in the latest version of Moose, there are some errors
related to PPContext not understanding #position. And it seems to be
associated to the new changes.
Here's a script to reproduce the problem in Moose:
Gofer new
url: 'http://smalltalkhub.com/mc/AlainPlantec/Platypus2/main';
package: 'ConfigurationOfPlatypus';
load.
(Smalltalk at: #ConfigurationOfPlatypus) loadDevelopment.
PlatypusExpressEditor new synchronize
We might later in time try to adapt platyplus to the recent changes in
PetitParser but currently we have to concentrate on other things.
regards.
Usman
On Mon, Sep 29, 2014 at 10:00 AM, Tudor Girba <tudor(a)tudorgirba.com>
wrote:
--
www.tudorgirba.com
"Every thing has its own flow"
_______________________________________________
Moose-dev mailing list
Moose-dev(a)iam.unibe.ch
https://www.iam.unibe.ch/mailman/listinfo/moose-dev
Hi Usman,
Could you let us know how you trigger the parsing? Could it be that
you are using some internal methods?
Could you reproduce this on any other parser?
Cheers,
Doru
On Mon, Sep 29, 2014 at 9:47 AM, Jan Kurš <kurs.jan(a)gmail.com> wrote:
> Hi,
>
> I tried to update PetitParser so that it converts a stream into the
> PPContext. Therefore an entry point to the parsing looks like this:
>
> PPParser>>parse: anObject
> ^ self parse: anObject withContext: PPContext new
>
> The PPContext enwraps the PPStream and should provide the stream
> protocol.
>
> I also updated the PetitSmalltalk project (version JanKurs.71).
>
> The drawback of PPContext (that I am aware of) is approximately 10%
> slowdown. If there is anything else, please let me know so that I can work
> on it.
>
> Cheers,
> Jan
>
>
>
>
>
> On 28 September 2014 22:42, Usman Bhatti <usman.bhatti(a)gmail.com>
> wrote:
>
>> Here's a screenshot of the debugger that popups when I execute some
>> tests with the recent changes. It seems to be related to the problem of
>> PPParsers knowing a context object instead of a stream.
>> [image: Inline image 1]
>>
>> On Sun, Sep 28, 2014 at 9:17 PM, Tudor Girba <tudor(a)tudorgirba.com>
>> wrote:
>>
>>> Hi,
>>>
>>> These changes should be backward compatible. What kind of impact
>>> did you experience? Can you give concrete examples?
>>>
>>> Cheers,
>>> Doru
>>>
>>> On Sun, Sep 28, 2014 at 9:02 PM, Usman Bhatti <
>>> usman.bhatti(a)gmail.com> wrote:
>>>
>>>> Hi all,
>>>>
>>>> Recently, there have been changes in PetitParser related to
>>>> support for island grammar and parsing context which requires some
>>>> modifications in the tools using PetitParser. Not all tools can be
adapted
>>>> immediately to use the new version. Hence, I have created a new version
of
>>>> PetitParser that loads the packages prior to these changes for backward
>>>> compatibility.
>>>>
>>>> Name: ConfigurationOfPetitParser-usmanbhatti.49
>>>> Author: usmanbhatti
>>>> Time: 28 September 2014, 8:58:00.540857 pm
>>>> UUID: 54877ca2-77b0-4c5e-937d-5124dd76b075
>>>> Ancestors: ConfigurationOfPetitParser-JanKurs.48
>>>>
>>>> adding a baseline and a version that loads packages before
>>>> changes made to petitparser related to parsing context and island
grammar.
>>>>
>>>> regards,
>>>>
>>>> usman
>>>>
>>>> _______________________________________________
>>>> Moose-dev mailing list
>>>> Moose-dev(a)iam.unibe.ch
>>>> https://www.iam.unibe.ch/mailman/listinfo/moose-dev
>>>>
>>>>
>>>
>>>
>>> --
>>> www.tudorgirba.com
>>>
>>> "Every thing has its own flow"
>>>
>>> _______________________________________________
>>> Moose-dev mailing list
>>> Moose-dev(a)iam.unibe.ch
>>> https://www.iam.unibe.ch/mailman/listinfo/moose-dev
>>>
>>>
>>
>> _______________________________________________
>> Moose-dev mailing list
>> Moose-dev(a)iam.unibe.ch
>> https://www.iam.unibe.ch/mailman/listinfo/moose-dev
>>
>>
>
> _______________________________________________
> Moose-dev mailing list
> Moose-dev(a)iam.unibe.ch
> https://www.iam.unibe.ch/mailman/listinfo/moose-dev
>
>
--
www.tudorgirba.com
"Every thing has its own flow"
_______________________________________________
Moose-dev mailing list
Moose-dev(a)iam.unibe.ch
https://www.iam.unibe.ch/mailman/listinfo/moose-dev
_______________________________________________
Moose-dev mailing list
Moose-dev(a)iam.unibe.ch
https://www.iam.unibe.ch/mailman/listinfo/moose-dev
