[antlr-interest] Automatic lists
Ben Corne
ben.corne at gmail.com
Tue May 17 06:14:10 PDT 2011
Hi
I'm trying to create a rule looking like this:
==================================
statement
: ( docs+=documentation )*
( def=definition -> ^(AGSTATEMENT $docs $def)
| tdef=typedefinition -> ^(AGSTATEMENT $docs $tdef)
| imp=imports -> ^(AGSTATEMENT $docs $imp)
// TODO: (variable EQL) => varassignment
// TODO: (assignment) => assignment
| exp=expression -> ^(AGSTATEMENT $exp $docs)
;
==================================
This rule should add a bunch of documentation constructs to each type of
statement. Testing with at least one documentation per statement, everything
works as expected.
Now the problem is that when I test statements without any documentation
added to a statement, the ANTLRworks debugger seems to stop after the first
such statement, refusing to go parse the folowing statements.
I suspect that it is because the $docs variable is never initialized since
nothing is added. How should I fix this?
Regards
Ben C.
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