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Give left_oper() and right_oper() noError parameters like oper() (the

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binary case) already has.  Needed for upcoming ruleutils change.
This commit is contained in:
Tom Lane 2002-05-01 19:26:08 +00:00
parent 61446e0927
commit a829cbb877
3 changed files with 21 additions and 17 deletions
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6
src/backend/parser/parse_node.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_node.c,v 1.63 2002/04/25 02:56:55 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_node.c,v 1.64 2002/05/01 19:26:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -109,7 +109,7 @@ make_op(List *opname, Node *ltree, Node *rtree)
/* right operator? */
if (rtree == NULL)
{
tup = right_oper(opname, ltypeId);
tup = right_oper(opname, ltypeId, false);
opform = (Form_pg_operator) GETSTRUCT(tup);
left = make_operand(ltree, ltypeId, opform->oprleft);
right = NULL;
@ -118,7 +118,7 @@ make_op(List *opname, Node *ltree, Node *rtree)
/* left operator? */
else if (ltree == NULL)
{
tup = left_oper(opname, rtypeId);
tup = left_oper(opname, rtypeId, false);
opform = (Form_pg_operator) GETSTRUCT(tup);
right = make_operand(rtree, rtypeId, opform->oprright);
left = NULL;

26
src/backend/parser/parse_oper.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_oper.c,v 1.55 2002/04/16 23:08:11 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_oper.c,v 1.56 2002/05/01 19:26:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -751,19 +751,21 @@ compatible_oper_funcid(List *op, Oid arg1, Oid arg2, bool noError)
}
/* Given unary right operator (operator on right), return oper struct
/* right_oper() -- search for a unary right operator (operator on right)
* Given operator name and type of arg, return oper struct.
*
* IMPORTANT: the returned operator (if any) is only promised to be
* coercion-compatible with the input datatype. Do not use this if
* you need an exact- or binary-compatible match.
*
* Always raises error on failure.
* If no matching operator found, return NULL if noError is true,
* raise an error if it is false.
*
* NOTE: on success, the returned object is a syscache entry. The caller
* must ReleaseSysCache() the entry when done with it.
*/
Operator
right_oper(List *op, Oid arg)
right_oper(List *op, Oid arg, bool noError)
{
FuncCandidateList clist;
Oid operOid = InvalidOid;
@ -804,26 +806,28 @@ right_oper(List *op, Oid arg)
0, 0, 0);
}
if (!HeapTupleIsValid(tup))
if (!HeapTupleIsValid(tup) && !noError)
unary_op_error(op, arg, FALSE);
return (Operator) tup;
} /* right_oper() */
}
/* Given unary left operator (operator on left), return oper struct
/* left_oper() -- search for a unary left operator (operator on left)
* Given operator name and type of arg, return oper struct.
*
* IMPORTANT: the returned operator (if any) is only promised to be
* coercion-compatible with the input datatype. Do not use this if
* you need an exact- or binary-compatible match.
*
* Always raises error on failure.
* If no matching operator found, return NULL if noError is true,
* raise an error if it is false.
*
* NOTE: on success, the returned object is a syscache entry. The caller
* must ReleaseSysCache() the entry when done with it.
*/
Operator
left_oper(List *op, Oid arg)
left_oper(List *op, Oid arg, bool noError)
{
FuncCandidateList clist;
Oid operOid = InvalidOid;
@ -869,11 +873,11 @@ left_oper(List *op, Oid arg)
0, 0, 0);
}
if (!HeapTupleIsValid(tup))
if (!HeapTupleIsValid(tup) && !noError)
unary_op_error(op, arg, TRUE);
return (Operator) tup;
} /* left_oper() */
}
/* op_error()

6
src/include/parser/parse_oper.h
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: parse_oper.h,v 1.19 2002/04/16 23:08:12 tgl Exp $
* $Id: parse_oper.h,v 1.20 2002/05/01 19:26:08 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -27,8 +27,8 @@ extern Oid LookupOperNameTypeNames(List *opername, TypeName *oprleft,
/* Routines to find operators matching a name and given input types */
/* NB: the selected operator may require coercion of the input types! */
extern Operator oper(List *op, Oid arg1, Oid arg2, bool noError);
extern Operator right_oper(List *op, Oid arg);
extern Operator left_oper(List *op, Oid arg);
extern Operator right_oper(List *op, Oid arg, bool noError);
extern Operator left_oper(List *op, Oid arg, bool noError);
/* Routines to find operators that DO NOT require coercion --- ie, their */
/* input types are either exactly as given, or binary-compatible */