Re: [sv-ac] 1932

From: Johan Mårtensson <johan.martensson_at_.....>
Date: Wed Jan 16 2008 - 00:45:48 PST
Hi Doron,

I still think next should have higher precedence that until and |-> for
the reasons I stated before. It turns out apparently that in a
shift-reduce parser for an LR1 language 

next r |=> s 

will be parsed with the grouping 'next (r |=> s)' whatever the relative
presedences of next and |=>.

Relative precedences are only used by the parser when there is a
shift-reduce conflict which is not the case here.

This is the reason why the Verific parser will parse

a ##1 b throughout s 

as 

a ##1 (b throughout s)

although '##1' has higher precedence than 'throughout'.

Therefore I see no reason for giving next a lower precedence than |=>
and there are reasons for giving it a higher one.

Best Regards,

Johan 

On Tue, Jan 15, 2008 at 12:51:24PM +0200, Bustan, Doron wrote:
> Hi,
> 
>  
> 
> I upload the updated versions of 1932. I think it is ready for vote.
> 
>  
> 
> Doron
> 
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Received on Wed Jan 16 00:46:10 2008

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