Re: Help with gram.y (UNDER)

Chris Bitmead wrote:
>
> It seems like bison is confused by having that '(' just after an
> optional syntax (UNION).

I mean the optional UNDER

> If I place something after OptUnder (USING just

I mean USING;

i.e. CreateStmt: CREATE OptTemp TABLE relation_name OptUnder USING '('
OptTableElementList ')' OptInherit

This will accept "CREATE TABLE foo USING (aa text);"

but this...

CreateStmt: CREATE OptTemp TABLE relation_name OptUnder '('
OptTableElementList ')' OptInherit

won't accept "CREATE TABLE foo (aa text);"

> to pick a token), then everything works fine (except of course the
> spurious USING becomes part of the syntax).
>
> Does the '(' have some kind of second-class status as a token that would
> cause this wierdness?
>
> Chris Bitmead wrote:
> >
> > Can someone give be a bit of help with gram.y to get this UNDER syntax
> > right? I did what I though was the obvious syntax, but it no longer
> > accepts a plain create table after this change...
> >
> > OptUnder: UNDER relation_name_list { $$ = $2; }
> > | /*EMPTY*/ { $$ = NIL; }
> > ;
> >
> > CreateStmt: CREATE OptTemp TABLE relation_name OptUnder '('
> > OptTableElementList ')' OptInherit
> > {
> > /*etc */
> > }
> > ;
> >
> > The full patch is here...
> > ftp://ftp.tech.com.au/pub/diff.x