[antlr-interest] setTreeAdaptor and delegates
Dimitrios Kolovos
dskolovos at gmail.com
Fri Jun 20 05:20:36 PDT 2008
Hi,
In the composite grammar (3.1.b) that I'm working on, I need to set the
TreeAdaptor of the generated parser to a custom one. I expected that
setting the TreeAdaptor to the top-level parser would also propagate it
in the delegates but this doesn't seem to be the case.
If implementing such a TreeAdaptor-propagating behaviour would be too
much of a problem, it would be nice to at least have a field (e.g.
"delegates") that contains a collection of all the delegates in the
generated parser (in addition to the individual fields) so that one can
implement this propagating behaviour in a recursive manner using a
generic algorithm that doesn't need to know the names of each delegate.
(Such a generic algorithm would also require the getTreeAdaptor() and
setTreeAdaptor() methods to be moved to a core base-class such as Parser
or Base Recognizer)
I've managed to do this using a custom base-class and reflection, but I
thought this may be a useful enhancement for future versions of ANTLR.
Any ideas?
Cheers,
Dimitrios
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