On Tue, Mar 16, 2010 at 4:54 AM, Brian Catlin <[email protected]> wrote:
>
> When I compile the grammar with ANTLR, I get the following:
>
>
>
> warning(149): Commands.g:0:0: rewrite syntax or operator with no output
> option; setting output=AST
>
Hi Brian,
The '!' and '^' are tree-rewrite operators, so ANTLR is telling you here
that you're trying to rewrite something without specifying you're building a
tree. Doing a CRL+F I found this rule:
commands
: ( script_command
| dump_command
! show_command // <- !
)*
;
Notice the '!' (exclamation mark) that should be a '|' (pipe):
commands
: ( script_command
| dump_command
| show_command // <- |
)*
;
Regards,
Bart.
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