[antlr-interest] tips on grammar subrules

[William Tribbey]

Hello Everyone,

I am hoping someone can set me straight on values from subrules.
I am working with the Java 1.5  grammar done by Terence Parr that
I downloaded from the grammar page. I have Terence's book, which
has been very helpful, and I am having fun doing my work.

At one point I am trying to capture the import statements in a class
file. I am working with this rule:


importDeclaration
   :   'import' 'static'? qualifiedName ('.' '*')? ';'

I can tell whether the import is static and get the qualifiedName value
easily
doing this:

importDeclaration
   :   'import' s='static'? name=qualifiedName ('.' '*')? ';'

Of course, I have some actions and I am using some scope variables to save
these values. I would also like to get the .* if present, but so far I have
only been
able to do that with something like this:

importDeclaration
    :   'import' s='static'? name=qualifiedName ('.' '*'
{$importDeclaration::star=true;})? ';'

This works but feels a tad kludgy to me, so I am wondering what am I missing
to do this
as neatly as possible.

Any hints appreciated.

Will Tribbey
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