[Cocci] Data processing for expression ASTs

[elfring@users.sourceforge.net (SF Markus Elfring)]

>> How are the chances that more documentation will become available
>> for safe processing of corresponding abstract syntax graph instances?
> 
> About the same as the chance that a user who wants the documentation will
> write it.  I have no plans to do so.  In general, if you know enough OCaml
> to use the abstract syntax tree, you also know enough OCaml to figure out
> what it is from the source code.  Everything is defined in
> parsing_c/ast_c.ml.

Does this "tree" data structure correspond to the complete input from
the source file?

I imagine that a special mapping for expression data should be sufficient
for the discussed SmPL metavariable, shouldn' it?

Regards,
Markus