Folks,
Here's a fragment of a AST transformation grammar I'm working on
foo
: ^(IMPL ^(OR x+=form+) y=form)
-> ^(AND ^(AS_IMPL $x $y)+)
;
I want to keep certain semantic information on tree nodes. Figured
out already how to do this with custom node classes. What I want, in
the example of the rule above, is for the semantic information on the
root node (IMPL) to be automatically propagated to the output root
node (AND). Of course I can write actions in each such production to
do this, but I have a whole lot of productions like this and writing
all those actions is a maintenance problem.
Is there some way to do this pervasively, perhaps with a custom
TreeAdaptor? Thanks in advance.
bill
Bill Andersen
Ontology Works, Inc. (www.ontologyworks.com)
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