[antlr-interest] What does this error mean in english?

[Jim Idle]

Christopher Laco wrote:
> "mismatched tree node: DOCUMENT expecting DOCUMENT"
>
>
> I'm not having very good luck trying to do simple things apparently.
>
> My ToStringTree:
>
>
>     (DOCUMENT (PRINT 'variable'))
>
>
> My tree grammar:
>
>
>   document
>
> : ^(DOCUMENT statement*)
>
> ;
>
>   statement
>
> : ^(PRINT LITERAL)
>
> ;
>
>   
Sounds like your tokens are out of sync. Regen your lexer/parser, then 
regen your tree walker. The token definitions will then be in sync and 
you will at least know that that was or was not the issue.

Jim