[antlr-interest] NullPointerExption error in verilog.g
Ric Klaren
klaren at cs.utwente.nl
Wed Mar 13 02:51:52 PST 2002
Hi,
Could you try the 2.7.2 prerelease?
Ric
On Wed, Mar 13, 2002 at 10:45:38AM -0000, kts81932 wrote:
> recently, l learn about antlr-2.7.1.
> to use antlr-2.7.1, dowonload verilog.g file
> (http://www.antlr.org/resources.html)
> successfully compile it..(in vc++)..
>
> i add TreeWalker to verilog.g file
> and compile it.. below error occur
>
> #$%%*&@# internal error: java.lang.NullPointerException
>
> fist time, i can not find where this error occur
> finally i found that..
>
> delay :
> POUND NUMBER |
> POUND identifier |
> POUND LPAREN mintypmax_expression
> ( COMMA mintypmax_expression
> ( COMMA mintypmax_expression )?
> )?
> RPAREN
> ;
> mintypmax_expression :
> expression ( COLON expression COLON expression )?
> ;
>
> to avoid error occurrence how can i change this grammer into
> TreeWalker??
>
> Thanks...
>
>
>
>
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>
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