| Re: [cdt-dev] LR parser and LPG version |
As far as I know LPG is still being actively developed, but we are using the 1.1 version which is not being maintained anymore. I haven't had the time or need to upgrade to 2.0.
Actually one of the LPG maintainers opened a bug in our system asking us to upgrade to 2.0 :)
https://bugs.eclipse.org/bugs/show_bug.cgi?id=297860
Xtext is a very interesting technology but its my understanding that they are focused on small domain specific languages, and they certainly don't have support for the C preprocessor.
What happened to safari, is it still around?
Mike Kucera
Software Developer
Eclipse CDT/PTP
IBM Toronto
mkucera@xxxxxxxxxx
Doug Schaefer ---03/02/2010 04:53:10 PM---Yes, this has me worried. What is the status of LPG, and why is such a simple bug still there? I raise this because I am seeing
From: | Doug Schaefer <cdtdoug@xxxxxxxxx> |
To: | "CDT General developers list." <cdt-dev@xxxxxxxxxxx> |
Date: | 03/02/2010 04:53 PM |
Subject: | Re: [cdt-dev] LR parser and LPG version |
After manually fixing the “-a” I can correctly generate the parser sources.
Do you know if this LPG bug has been reported somewhere? I searched for it in the project’s sourceforge tracker but was not able to find it.
/Mario
To: CDT General developers list.
Subject: Re: [cdt-dev] LR parser and LPG version
There is a bug in the LPG generator that causes it to sometimes output "-a" when it should output "-1". The workaround is to manually edit the generated files by replacing "-a" with "-1".
The required LPG version is 1.1.
Mike Kucera
Software Developer
Eclipse CDT/PTP
IBM Toronto
mkucera@xxxxxxxxxx
"Mario Pierro" ---03/02/2010 09:45:56 AM---Hello,
From: | "Mario Pierro" <Mario.Pierro@xxxxxxx> |
To: | "CDT General developers list." <cdt-dev@xxxxxxxxxxx> |
Date: | 03/02/2010 09:45 AM |
Subject: | [cdt-dev] LR parser and LPG version |
Hello,
I am experimenting with extending the new LR parser to recognize custom
extensions to the CDT language.
I can successfully build and run the checked out java files, but I am
not able to correctly generate them from the .g grammar files - the
files will contain syntax errors.
I checked out the following plugins from CVS
net.sourceforge.lpg.lpgjavaruntime
org.eclipse.cdt.core.lrparser
org.eclipse.cdt.core.lrparser.sdk
org.eclipse.cdt.core.lrparser.sdk.feature
org.eclipse.cdt.core.lrparser.tests
I also downloaded the LPG 1.1 distribution from sourceforge
http://sourceforge.net/projects/lpg/files/lpgdistribution/LPG-V1.1/lpgdi
stribution-05-16-06.zip/download
in order to obtain the parser generator executable (lpg.exe).
I have set up the lpg_exe and lpg_template ant properties to point to
the lpg.exe and the org.eclipse.cdt.core.lrparser/grammar/templates
folder, respectively.
I can run the build.xml script and generate the java sources, but the
files created will contain syntax errors (like a "-a" instead of a "-1"
in parser tables). I have also tried to use the lpg executables 2.0 but
they will generate even more errors.
What is the lpg version which has been used to build the parser sources
in the lrparser plugin?
Thanks for your help,
/Mario
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