Re: Remove Value node struct

Kyotaro Horiguchi <horikyota.ntt@gmail.com>

From: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
To: ilmari@ilmari.org
Cc: peter.eisentraut@enterprisedb.com, pgsql-hackers@postgresql.org
Date: 2021-08-30T02:13:58Z
Lists: pgsql-hackers
Agree to the motive and +1 for the concept.

At Wed, 25 Aug 2021 15:00:13 +0100, Dagfinn Ilmari Mannsåker <ilmari@ilmari.org> wrote in 
> However, the patch adds:
> 
> > +typedef struct Null
> > +{
> > +	NodeTag		type;
> > +	char	   *val;
> > +} Null;
> 
> which doesn't seem to be used anywhere. Is that a leftoverf from an
> intermediate development stage?

+1 Looks like so, it can be simply removed.

0001 looks fine to me.

0002:
  there's an "integer Value node" in gram.y: 7776.

-			n = makeFloatConst(v->val.str, location);
+			n = (Node *) makeFloatConst(castNode(Float, v)->val, location);

makeFloatConst is Node* so the cast doesn't seem needed. The same can
be said for Int and String Consts.  This looks like a confustion with
makeInteger and friends.

+	else if (IsA(obj, Integer))
+		_outInteger(str, (Integer *) obj);
+	else if (IsA(obj, Float))
+		_outFloat(str, (Float *) obj);

I felt that the type enames are a bit confusing as they might be too
generic, or too close with the corresponding binary types.


-	Node	   *arg;			/* a (Value *) or a (TypeName *) */
+	Node	   *arg;

Mmm. It's a bit pity that we lose the generic name for the value nodes.

regards.

-- 
Kyotaro Horiguchi
NTT Open Source Software Center



Commits

  1. Remove Value node struct

  2. Remove useless casts