Exception declared on ANTLR grammar rule ignored

Posted by Kaleb Pederson on Stack Overflow See other posts from Stack Overflow or by Kaleb Pederson
Published on 2010-05-14T17:21:36Z Indexed on 2010/05/14 17:24 UTC
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I have a tree parser that's doing semantic analysis on the AST generated by my parser. It has a rule declared as follows:

transitionDefinition throws WorkflowStateNotFoundException: /* ... */

This compiles just fine and matches the rule syntax at the ANTLR Wiki but my exception is never declared so the Java compiler complains about undeclared exceptions.

./tool/src/main/antlr3/org/antlr/grammar/v3/ANTLRv3.g shows that it's building a tree (but I'm not actually positive if it's the v2 or v3 grammar that ANTLR 3.2 is using):

throwsSpec
    :   'throws' id ( ',' id )* -> ^('throws' id+)
    ;

I know I can make it a runtime exception, but I'd like to use my exception hierarchy. Am I doing something wrong or should that syntax work?

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