[antlr-interest] heterogeneous AST

[Abhijit Nandkumar Ghonge]

Hi all,
            Can we implement heterogeneous ASTs in antlr v3? I have downloaded the latest antlr-3.0.1.tar.gz from antlr site and tried out writing a sample code with heterogeneous AST specified as below:

Exitstatement:
            'exit'<AST=com.example.core.ExitNode> NEWLINE!
            ;

However I'm getting the following error:
error(100): Expr.g:114:17: syntax error: antlr: FinScr.g:114:17: unexpected token: <
error(100): Expr.g:114:52: syntax error: antlr: FinScr.g:114:52: unexpected token: ExitNode
error(106): Expr.g:114:22: reference to undefined rule: com
error(106): Expr.g:114:26: reference to undefined rule: example
error(106): FinScr.g:114:32: reference to undefined rule: core

Can anybody help please, since I have done this in antlr-2.7.6, but I'm not able implement likewise in antlr-3.0.1?


Thanks,
~Abhijit.




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