Re: Need Help in Shift Reduce Errors
On Fri, 22 Jul 2005, Atul Kulkarni wrote: > I am facing a problem with the Grammar i am feeding to the Bison. It > throws 2 shift reduce conflicts. Please help with this I am not able > to resolve them. If shifting is the correct behavior, my advice is to not worry about it. Laurence Finston ___ Help-bison@gnu.org http://lists.gnu.org/mailman/listinfo/help-bison
Re: Need Help in Shift Reduce Errors
Well I would not really worry about them but one variant of Bison Yacc just does not generate output "c" code for this grammar. That's what worries me. Regards, Atul. On 7/22/05, Laurence Finston <[EMAIL PROTECTED]> wrote: > On Fri, 22 Jul 2005, Atul Kulkarni wrote: > > > I am facing a problem with the Grammar i am feeding to the Bison. It > > throws 2 shift reduce conflicts. Please help with this I am not able > > to resolve them. > > If shifting is the correct behavior, my advice is to not worry about it. > > Laurence Finston > ___ Help-bison@gnu.org http://lists.gnu.org/mailman/listinfo/help-bison
Re: Need Help in Shift Reduce Errors
On Fri, 22 Jul 2005, Atul Kulkarni wrote: > Well I would not really worry about them but one variant of Bison Yacc > just does not generate output "c" code for this grammar. That's what > worries me. > It may be that Bison fails if the number of conflicts is different from the value specified using the '%expect' option. I have a vague recollection that this used to happen, but I haven't used '%expect' for a long time. I just checked the current manual, and it just says that Bison issues a warning, but doesn't say anything about failing or aborting. If you're using '%expect', and getting rid of it doesn't help, I suggest having a look through the documentation. I didn't look very thoroughly. Laurence ___ Help-bison@gnu.org http://lists.gnu.org/mailman/listinfo/help-bison
Re: Need Help in Shift Reduce Errors
On 22 Jul 2005, at 06:23, Atul Kulkarni wrote: I am facing a problem with the Grammar i am feeding to the Bison. It throws 2 shift reduce conflicts. Please help with this I am not able to resolve them. Shift/reduce conflicts can sometimes be resolved using token precedences (%left, etc.). Look into the .output file, in the states with the conflict, and there, at the conflicting rules. Set token precedences for the tokens immediately before and after the ".". If there are no such tokens, the best option for this method to work, is to rewrite the grammar, as to get them. Hans Aberg ___ Help-bison@gnu.org http://lists.gnu.org/mailman/listinfo/help-bison
