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Re: Tell a rule to shift instead of reduce?
From: |
Adam Smalin |
Subject: |
Re: Tell a rule to shift instead of reduce? |
Date: |
Sun, 22 Dec 2013 12:38:37 -0500 |
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 <address@hidden> wrote:
>
> Le 17 déc. 2013 à 09:25, Adam Smalin <address@hidden> 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"
>
>
Re: Tell a rule to shift instead of reduce?, Akim Demaille, 2013/12/22
- Re: Tell a rule to shift instead of reduce?,
Adam Smalin <=
- Re: Tell a rule to shift instead of reduce?, Adam Smalin, 2013/12/22
- Re: Tell a rule to shift instead of reduce?, Akim Demaille, 2013/12/22
- Re: Tell a rule to shift instead of reduce?, Akim Demaille, 2013/12/22
- Re: Tell a rule to shift instead of reduce?, Adam Smalin, 2013/12/22
- Re: Tell a rule to shift instead of reduce?, Akim Demaille, 2013/12/23
- Re: Tell a rule to shift instead of reduce?, Adam Smalin, 2013/12/23
- Re: Tell a rule to shift instead of reduce?, Akim Demaille, 2013/12/24
Re: Tell a rule to shift instead of reduce?, Akim Demaille, 2013/12/22