[antlr-interest] Manually insert a node into an automatically contructed tree?
oliver_kellogg
oliver_kellogg at yahoo.com
Thu Mar 11 23:39:15 PST 2004
Hi,
Is it possible to insert an artificial (dummy) item in the tree
that is automatically constructed for a rule?
I would like to do this for the sake of a more regular
node structure. Here is the concerning rule:
component_list [boolean has_discrim]
: component_items ( variant_part { has_discrim }? )?
| /* empty_component_items */ variant_part { has_discrim }?
;
At the place of the empty_component_items, I would like
to insert the empty node.
This would make the tree look the same regardless of
whether or not the component_items are present.
The component_items rule is this:
component_items : ( pragma | comp_decl )+
{ #component_items =
#(#[COMPONENT_ITEMS, "COMPONENT_ITEMS"], #component_items); }
Thanks,
Oliver
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