[antlr-interest] Tree walking Q
Gerald B. Rosenberg
gbr at newtechlaw.com
Sat Jun 4 15:37:33 PDT 2005
The basic question: Is there a way to set a default token rule for use
during tree parsing? The objective is to skip tokens that are not within a
select subset that are to be processed by a particular tree-parser run.
My AST is rather large and complex, to the point where I cannot, as a
practical matter, define tree-parser rules for all potential tokens. The
ANTLR generated tree-walker quits if it encounters an unknown token.
Is there a default rule identifier? Or, is there another mechanism to
enable the tree-parser to simply walk past those tokens not otherwise
identified to the parser?
Thanks,
Gerald
----
Gerald B. Rosenberg, Esq.
NewTechLaw
285 Hamilton Avenue, Suite 520
Palo Alto, CA 94301-2576
650.325.2100 (office) / 650.703.1724 (cell)
650.325.2107 (fax)
www.newtechlaw.com
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