[cdt-dev] some questions about CDT c/cpp parsing

[Andrew.Ferguson@xxxxxxxxxxx]

hi,

 I've a few questions about how
the CDT parser code is organised that I was hoping people on this list
might be able to help with. I'm aware that there has been an active history
in this area of code (?), so if some of the questions below are too broad
brush to make sense then please say.


(a) is the parser(s) compliant with
a particular standard?

(b) I've only heard of dom in the context
of xml, but the code mentions both ast and dom. Is dom being used here
in the same sense as ast? and just to confirm, in the pdom context its
being used in a different context where it really is a higher-level representation
than the ast?

(c) is there a way to tell which code
on HEAD belongs to the current parser(s), and which is unused or to be
phased out? e.g. by package?

(d) is there a way to hook into the
parser to allow for vendor specific language customizations? (or at least
tell the parser some sections are safe to ignore)

(e) the CModel also seems to store information
about entities from the ast, is this something worth knowing more about
when getting an overview of the source code parsing, or can it be considered
independent? Maybe a better question is whether the pdom entities would
replace some of the cmodel entities in the future?

(f) my understanding is that, at least
in theory, you can't parse a c/cpp source file without specifying a set
of macros which apply. How is this addressed by the parser, and also the
pdom?

(g) are there different levels of parsing,
for picking up a summary of the members of a source file? (I've seen there
are constants for not following includes, but not e.g. skipping parsing
the body of a function, assuming this is feasible)


I have attempted to answer some questions
myself from the source code, but have been getting a little overwhelmed,
so any help would be appreciated :).
thanks,
Andrew

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