Tom Lane wrote:
A nonterminal that is not intended to represent any real input, ever,
is just plain weird.
If you say so... PL/PgSQL already uses such a beast, though: the lno
nonterminal, for example.
Not at all. The right way to do this, I think, is for the mid-rule
action to palloc the
Neil Conway <[EMAIL PROTECTED]> writes:
> Considering that the Bison manual suggests that it implements
> mid-rule actions by introducing an implicit bogus non-terminal ([1]),
Indeed ... and the reason that they bothered to do that is that mid-rule
actions are more understandable ;-). A nontermi
Tom Lane wrote:
Right, mid-rule actions were what I had in mind. They're not uglier
than introducing empty nonterminals
Well, IMHO they make the grammar rather hard to read when the action has
multiple lines (we would need at least 6 lines of code in the mid-rule
action, I believe). Unless w
Neil Conway <[EMAIL PROTECTED]> writes:
> Tom Lane wrote:
>> I still find the grammar changes to be an ugly kluge --- it should be
>> possible to do this without introducing bogus nonterminals.
> The scope-local variables need to be added to the namespace by the time
> that we parse the WHEN clau
Tom Lane wrote:
I still find the grammar changes to be an ugly kluge --- it should be
possible to do this without introducing bogus nonterminals.
The scope-local variables need to be added to the namespace by the time
that we parse the WHEN clauses. I can see two ways to do that: adding a
bog
Bruce Momjian writes:
> Also, do we want these features? Do they duplicate anything we already
> have?
This patch only covers SQLSTATE/SQLERRM for plpgsql, which I think we're
now agreed on doing. The other stuff is still open for discussion ---
personally I'm OK with the concept of LEAST and G
Also, do we want these features? Do they duplicate anything we already
have?
---
Tom Lane wrote:
> Neil Conway <[EMAIL PROTECTED]> writes:
> > Attached is a revised version of this patch. I'll apply it tonight or
> > tomor
Neil Conway <[EMAIL PROTECTED]> writes:
> Attached is a revised version of this patch. I'll apply it tonight or
> tomorrow, barring any objections.
I still find the grammar changes to be an ugly kluge --- it should be
possible to do this without introducing bogus nonterminals.
The ns push/pop op
Pavel Stehule wrote:
1. SQLSTATE and SQLERRM exists only on exception's block, and allways
carry info about some exception.
Attached is a revised version of this patch. I'll apply it tonight or
tomorrow, barring any objections.
-Neil
Index: doc/src/sgml/plpgsql.sgml
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