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Commit5e98703

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committed
Move ParserFuncOrColumn function higher in the file.
1 parent5ec8474 commit5e98703

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1 file changed

+131
-131
lines changed

1 file changed

+131
-131
lines changed

‎src/backend/parser/parse_func.c

Lines changed: 131 additions & 131 deletions
Original file line numberDiff line numberDiff line change
@@ -8,7 +8,7 @@
88
*
99
*
1010
* IDENTIFICATION
11-
* $Header: /cvsroot/pgsql/src/backend/parser/parse_func.c,v 1.106 2001/05/19 00:33:20 momjian Exp $
11+
* $Header: /cvsroot/pgsql/src/backend/parser/parse_func.c,v 1.107 2001/05/19 00:37:45 momjian Exp $
1212
*
1313
*-------------------------------------------------------------------------
1414
*/
@@ -104,136 +104,6 @@ ParseNestedFuncOrColumn(ParseState *pstate, Attr *attr, int precedence)
104104
returnretval;
105105
}
106106

107-
staticint
108-
agg_get_candidates(char*aggname,
109-
OidtypeId,
110-
CandidateList*candidates)
111-
{
112-
CandidateListcurrent_candidate;
113-
Relationpg_aggregate_desc;
114-
HeapScanDescpg_aggregate_scan;
115-
HeapTupletup;
116-
Form_pg_aggregateagg;
117-
intncandidates=0;
118-
ScanKeyDataaggKey[1];
119-
120-
*candidates=NULL;
121-
122-
ScanKeyEntryInitialize(&aggKey[0],0,
123-
Anum_pg_aggregate_aggname,
124-
F_NAMEEQ,
125-
NameGetDatum(aggname));
126-
127-
pg_aggregate_desc=heap_openr(AggregateRelationName,AccessShareLock);
128-
pg_aggregate_scan=heap_beginscan(pg_aggregate_desc,
129-
0,
130-
SnapshotSelf,/* ??? */
131-
1,
132-
aggKey);
133-
134-
while (HeapTupleIsValid(tup=heap_getnext(pg_aggregate_scan,0)))
135-
{
136-
agg= (Form_pg_aggregate)GETSTRUCT(tup);
137-
138-
current_candidate= (CandidateList)palloc(sizeof(struct_CandidateList));
139-
current_candidate->args= (Oid*)palloc(sizeof(Oid));
140-
141-
current_candidate->args[0]=agg->aggbasetype;
142-
current_candidate->next=*candidates;
143-
*candidates=current_candidate;
144-
ncandidates++;
145-
}
146-
147-
heap_endscan(pg_aggregate_scan);
148-
heap_close(pg_aggregate_desc,AccessShareLock);
149-
150-
returnncandidates;
151-
}/* agg_get_candidates() */
152-
153-
/* agg_select_candidate()
154-
*
155-
* Try to choose only one candidate aggregate function from a list of
156-
* possible matches. Return value is Oid of input type of aggregate
157-
* if successful, else InvalidOid.
158-
*/
159-
staticOid
160-
agg_select_candidate(Oidtypeid,CandidateListcandidates)
161-
{
162-
CandidateListcurrent_candidate;
163-
CandidateListlast_candidate;
164-
Oidcurrent_typeid;
165-
intncandidates;
166-
CATEGORYcategory,
167-
current_category;
168-
169-
/*
170-
* First look for exact matches or binary compatible matches. (Of
171-
* course exact matches shouldn't even get here, but anyway.)
172-
*/
173-
ncandidates=0;
174-
last_candidate=NULL;
175-
for (current_candidate=candidates;
176-
current_candidate!=NULL;
177-
current_candidate=current_candidate->next)
178-
{
179-
current_typeid=current_candidate->args[0];
180-
181-
if (current_typeid==typeid
182-
||IS_BINARY_COMPATIBLE(current_typeid,typeid))
183-
{
184-
last_candidate=current_candidate;
185-
ncandidates++;
186-
}
187-
}
188-
if (ncandidates==1)
189-
returnlast_candidate->args[0];
190-
191-
/*
192-
* If no luck that way, look for candidates which allow coercion and
193-
* have a preferred type. Keep all candidates if none match.
194-
*/
195-
category=TypeCategory(typeid);
196-
ncandidates=0;
197-
last_candidate=NULL;
198-
for (current_candidate=candidates;
199-
current_candidate!=NULL;
200-
current_candidate=current_candidate->next)
201-
{
202-
current_typeid=current_candidate->args[0];
203-
current_category=TypeCategory(current_typeid);
204-
205-
if (current_category==category
206-
&&IsPreferredType(current_category,current_typeid)
207-
&&can_coerce_type(1,&typeid,&current_typeid))
208-
{
209-
/* only one so far? then keep it... */
210-
if (last_candidate==NULL)
211-
{
212-
candidates=current_candidate;
213-
last_candidate=current_candidate;
214-
ncandidates=1;
215-
}
216-
/* otherwise, keep this one too... */
217-
else
218-
{
219-
last_candidate->next=current_candidate;
220-
last_candidate=current_candidate;
221-
ncandidates++;
222-
}
223-
}
224-
/* otherwise, don't bother keeping this one around... */
225-
}
226-
227-
if (last_candidate)/* terminate rebuilt list */
228-
last_candidate->next=NULL;
229-
230-
if (ncandidates==1)
231-
returncandidates->args[0];
232-
233-
returnInvalidOid;
234-
}/* agg_select_candidate() */
235-
236-
237107
/*
238108
* parse function
239109
* This code is confusing because the database can accept
@@ -709,6 +579,136 @@ ParseFuncOrColumn(ParseState *pstate, char *funcname, List *fargs,
709579
}
710580

711581

582+
staticint
583+
agg_get_candidates(char*aggname,
584+
OidtypeId,
585+
CandidateList*candidates)
586+
{
587+
CandidateListcurrent_candidate;
588+
Relationpg_aggregate_desc;
589+
HeapScanDescpg_aggregate_scan;
590+
HeapTupletup;
591+
Form_pg_aggregateagg;
592+
intncandidates=0;
593+
ScanKeyDataaggKey[1];
594+
595+
*candidates=NULL;
596+
597+
ScanKeyEntryInitialize(&aggKey[0],0,
598+
Anum_pg_aggregate_aggname,
599+
F_NAMEEQ,
600+
NameGetDatum(aggname));
601+
602+
pg_aggregate_desc=heap_openr(AggregateRelationName,AccessShareLock);
603+
pg_aggregate_scan=heap_beginscan(pg_aggregate_desc,
604+
0,
605+
SnapshotSelf,/* ??? */
606+
1,
607+
aggKey);
608+
609+
while (HeapTupleIsValid(tup=heap_getnext(pg_aggregate_scan,0)))
610+
{
611+
agg= (Form_pg_aggregate)GETSTRUCT(tup);
612+
613+
current_candidate= (CandidateList)palloc(sizeof(struct_CandidateList));
614+
current_candidate->args= (Oid*)palloc(sizeof(Oid));
615+
616+
current_candidate->args[0]=agg->aggbasetype;
617+
current_candidate->next=*candidates;
618+
*candidates=current_candidate;
619+
ncandidates++;
620+
}
621+
622+
heap_endscan(pg_aggregate_scan);
623+
heap_close(pg_aggregate_desc,AccessShareLock);
624+
625+
returnncandidates;
626+
}/* agg_get_candidates() */
627+
628+
/* agg_select_candidate()
629+
*
630+
* Try to choose only one candidate aggregate function from a list of
631+
* possible matches. Return value is Oid of input type of aggregate
632+
* if successful, else InvalidOid.
633+
*/
634+
staticOid
635+
agg_select_candidate(Oidtypeid,CandidateListcandidates)
636+
{
637+
CandidateListcurrent_candidate;
638+
CandidateListlast_candidate;
639+
Oidcurrent_typeid;
640+
intncandidates;
641+
CATEGORYcategory,
642+
current_category;
643+
644+
/*
645+
* First look for exact matches or binary compatible matches. (Of
646+
* course exact matches shouldn't even get here, but anyway.)
647+
*/
648+
ncandidates=0;
649+
last_candidate=NULL;
650+
for (current_candidate=candidates;
651+
current_candidate!=NULL;
652+
current_candidate=current_candidate->next)
653+
{
654+
current_typeid=current_candidate->args[0];
655+
656+
if (current_typeid==typeid
657+
||IS_BINARY_COMPATIBLE(current_typeid,typeid))
658+
{
659+
last_candidate=current_candidate;
660+
ncandidates++;
661+
}
662+
}
663+
if (ncandidates==1)
664+
returnlast_candidate->args[0];
665+
666+
/*
667+
* If no luck that way, look for candidates which allow coercion and
668+
* have a preferred type. Keep all candidates if none match.
669+
*/
670+
category=TypeCategory(typeid);
671+
ncandidates=0;
672+
last_candidate=NULL;
673+
for (current_candidate=candidates;
674+
current_candidate!=NULL;
675+
current_candidate=current_candidate->next)
676+
{
677+
current_typeid=current_candidate->args[0];
678+
current_category=TypeCategory(current_typeid);
679+
680+
if (current_category==category
681+
&&IsPreferredType(current_category,current_typeid)
682+
&&can_coerce_type(1,&typeid,&current_typeid))
683+
{
684+
/* only one so far? then keep it... */
685+
if (last_candidate==NULL)
686+
{
687+
candidates=current_candidate;
688+
last_candidate=current_candidate;
689+
ncandidates=1;
690+
}
691+
/* otherwise, keep this one too... */
692+
else
693+
{
694+
last_candidate->next=current_candidate;
695+
last_candidate=current_candidate;
696+
ncandidates++;
697+
}
698+
}
699+
/* otherwise, don't bother keeping this one around... */
700+
}
701+
702+
if (last_candidate)/* terminate rebuilt list */
703+
last_candidate->next=NULL;
704+
705+
if (ncandidates==1)
706+
returncandidates->args[0];
707+
708+
returnInvalidOid;
709+
}/* agg_select_candidate() */
710+
711+
712712
/* func_get_candidates()
713713
* get a list of all argument type vectors for which a function named
714714
* funcname taking nargs arguments exists

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