On 10/20/05, Neal Norwitz wrote:

The Grammar is (was at one point at least) shared between Jython and would allow more tools to be able to share infrastructure. The idea is to eventually be able to have [JP]ython output the same AST to tools.

Hello Python-dev, My name is Frank Wierzbicki and I'm working on the Jython project. Does anyone on this list know more about the history of this Grammar sharing between the two projects? I've heard about some Grammar sharing between Jython and Python, and I've noticed that (most of) the jython code in /org/python/parser/ast is commented "Autogenerated AST node". I would definitely like to look at (eventually) coordinating with this effort. I've cross-posted to the Jython-dev list in case someone there has some insight. Thanks, Frank

Guido van Rossum wrote:

On 10/25/05, Frank Wierzbicki wrote:

...

My name is Frank Wierzbicki and I'm working on the Jython project. Does anyone on this list know more about the history of this Grammar sharing between the two projects? I've heard about some Grammar sharing between Jython and Python, and I've noticed that (most of) the jython code in /org/python/parser/ast is commented "Autogenerated AST node". I would definitely like to look at (eventually) coordinating with this effort.

I've cross-posted to the Jython-dev list in case someone there has some insight.

Your best bet is to track down Jim Hugunin and see if he remembers. He's jimhug at microsoft.com or jim at hugunin.net.

no. this is all after Jim, its indeed a derived effort from the CPython own AST effort, just that we started using it quite a while ago. This is all after Jim was not involved with Jython anymore, Finn Bock started this.

Frank Wierzbicki wrote:

On 10/20/05, *Neal Norwitz* mailto:nnorwitz@gmail.com> wrote:

The Grammar is (was at one point at least) shared between Jython and would allow more tools to be able to share infrastructure. The idea is to eventually be able to have [JP]ython output the same AST to tools.

Hello Python-dev,

My name is Frank Wierzbicki and I'm working on the Jython project. Does anyone on this list know more about the history of this Grammar sharing between the two projects? I've heard about some Grammar sharing between Jython and Python, and I've noticed that (most of) the jython code in /org/python/parser/ast is commented "Autogenerated AST node". I would definitely like to look at (eventually) coordinating with this effort.

I've cross-posted to the Jython-dev list in case someone there has some insight.

as far as I understand now Python trunk contains some generated AST representation C code created through the asdl_c.py script from an updated Python.asdl, these files live in http://cvs.sourceforge.net/viewcvs.py/python/python/dist/src/Parser/ a parallel asdl_java.py existed in Python CVS sandbox (where the AST effort started) and was updated the last time the Jython own AST classes were generated with at the time version of Python.asdl (this was done by me if I remember correctly at some point in Jython 2.2 evolution, I think when the PyDev guys wanted a more up-to-date Jython parser to reuse): http://cvs.sourceforge.net/viewcvs.py/*checkout*/python/python/nondist/sandbox/ast/asdl_java.py?content-type=text%2Fplain&rev=1.7 basically the new Python.asdl needs to be used, the asdl_java.py maybe updated and our compiler changed as necessary. regards.

On 10/20/05, Guido van Rossum wrote:

On 10/20/05, Anthony Baxter wrote:

...

So it looks like the AST branch has landed. Wooo! Well done to all who were involved - it seems like it's been a huge amount of work.

Hear, hear. Great news! Thanks to Jeremy, Neil and all the others. I can't wait to check it out!

I want to thank all the people who made it possible by writing code and debugging. I hope this is a complete list: Armin Rigo Brett Cannon Grant Edwards John Ehresman Kurt Kaiser Neal Norwitz Neil Schemenauer Nick Coghlan Tim Peters And thanks to the PSF and PyCon organizers for hosting the formerly annual ast-branch sprints! Jeremy

On Fri, 21 Oct 2005 18:32:22 +0000 (UTC) nas at arctrix.com (Neil Schemenauer) wrote:

...

Does it just allow us to do new and interesting manipulations of the code during compilation?

Well, that's a pretty big deal, IMHO. For example, adding pychecker-like functionality should be straight forward now. I also hope some of the namespace optimizations get explored (e.g. PEP 267).

Is there a python interface ? Simon. -- Simon Burton, B.Sc. Licensed PO Box 8066 ANU Canberra 2601 Australia Ph. 61 02 6249 6940 http://arrowtheory.com

On Tue, Oct 25, 2005 at 01:36:26PM +1000, Simon Burton wrote:

Is there a python interface ?

Not yet, as far as I know. FYI, all: please see the following weblog entry for a description of the AST branch: http://www.amk.ca/diary/2005/10/the_ast_branch_lands_1 If I got anything wrong, please offer corrections in the comments for that post. --amk