Hello Julia,

Julia Lawall wrote:
> Here is a patch that imports expression lists into python as an instance
many thanks! The patch seems to work (needs a indentation change for
python/coccilib/elems.py on rc9).

> of the class ExpressionList, having the methods __getitem__ and __str__.
> you can thus write eg:
Would it be possible to add a __len__ attribute too? Expression lists
can be empty and nicest way to check for that is that len(es) > 0.

> 
> @r@
> expression list es;
> @@
> 
> f(es)
> 
> @script:python@
> es << r.es;
> @@
> 
> print "%s" % es
> print "%s" % es[1]
> 
> --------------------
> 
> The elements of the expression list are stored in the "elements" field
> of the ExpressionList structure, and thus is it also possible to say eg
> es.elements[1].  The elements list does not contain the commas between
> the elements.  They have disappeared completely.  The elements are just
Sure, the comma isn't part of the expressions.

> ordinary strings, not Expression structures.  Maybe making them
> Expression structures would be a good idea.  But maybe getting rid of
> Expression structures would be better, since they don't offer any
> information other than the string representation.
I guess that making the expression a string should be fine; I never
needed more than the string from python.

> Suggestions are welcome.  If this seems to be what is desired, I will do
> the same for the other list types.

thanks
bye
        michael
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