I forgot to CC this to the group a few days ago. >The token precedences apply to the tokens immediately before and after the parsing ‘.’ (as in the .output file) in the shift/reduce conflicting rules. The grammar must be written so that the tokens appear in such a position.
| rval '=' rval %prec '.' ',' rval conflict file: rval '=' rval . ',' rval Conflict between rule 343 and token ',' resolved as reduce (',' < '='). Shouldn't it have worked? I tried putting %prec at the end of the line and after the ',' as well and it failed. I tried multiple places at once and got an error saying only one %prec per line. On Sun, Dec 22, 2013 at 12:38 PM, Adam Smalin <acidzombi...@gmail.com>wrote: > That's one way to solve my literal problem but I would really like to make > ',' a higher precedence than '=' on that one rule (so it would shift > instead of reducing 100% of the time). > > Both sides should be rvals. What if someone wanted to do something like > > get_state().member[index].value, new_state, error_id = func(current_state, > config) > > Is there no way to overload the way the rule resolves the shift/reduce? I > tried prec and dprec several times one email is > http://lists.gnu.org/archive/html/help-bison/2013-12/msg00022.html > I tried using prec directly before and after the comma but that didn't > override the reduce into a shift. > > > On Sun, Dec 22, 2013 at 11:43 AM, Akim Demaille <a...@lrde.epita.fr>wrote: > >> >> Le 17 déc. 2013 à 09:25, Adam Smalin <acidzombi...@gmail.com> a écrit : >> >> > I still need help with this. I rewrote it maybe this will be more clear? >> > >> > I want to allow this >> > >> > var = var >> > var, var = var >> > var = var, var >> >> Maybe I am missing something, by how about clearly stating >> that you can have several lvalues and rvalues? The following >> grammar has no conflict, and requires no precedence/associativity. >> >> %% >> body: >> lvals '=' rvals >> ; >> >> lvals: >> lval >> | lvals ',' lval >> ; >> >> rvals: >> rval >> | rvals ',' rval >> ; >> >> rval: "var" >> lval: "var" >> >> > _______________________________________________ help-bison@gnu.org https://lists.gnu.org/mailman/listinfo/help-bison