Re: Force bison syntax error on string constant

[Martin Alexander Neumann]

Hi Bob,

use the macro YYERROR;

It's documented here:
https://www.gnu.org/software/bison/manual/html_node/GLR-Semantic-Actions.html#YYERROR

Yours,
Alex
On 10/24/2014 03:10 PM, Bob Rossi wrote:
> Hi,
> 
> I have a rule like this,
> 
>   output: output_variant NEWLINE {
>     *gdbmi_output = $1;
>   };
> 
>   output: error NEWLINE {
>     yyerrok;
>   };
> 
>   output_variant: OPEN_PAREN variable CLOSED_PAREN {
>     $$ = gdbmi_output_alloc();
>     $$->kind = GDBMI_OUTPUT_PROMPT;
>     free($2);
>   }
> 
> Where OPEN_PAREN is (, variable is [a-zA-Z]+ and CLOSED_PAREN is ).
> I want ONLY "gdb" to be allowed in this variable context.
> 
> Is there a way to force the syntax error in the action in such a way
> that bison then bubbles up the error into the above 'output' error rule?
> 
> Thanks,
> Bob Rossi
> 
> _______________________________________________
> address@hidden https://lists.gnu.org/mailman/listinfo/help-bison
>