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Code

Clean up some code that had gotten a bit ugly through repeated revisions.

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This commit is contained in:
Tom Lane 2004-04-02 21:05:32 +00:00
parent 27a4f06ade
commit b066d9e4bc
1 changed files with 10 additions and 13 deletions
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23
src/backend/parser/analyze.c
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@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California * Portions Copyright (c) 1994, Regents of the University of California
* *
* $PostgreSQL: pgsql/src/backend/parser/analyze.c,v 1.297 2004/01/23 02:13:12 neilc Exp $ * $PostgreSQL: pgsql/src/backend/parser/analyze.c,v 1.298 2004/04/02 21:05:32 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -506,7 +506,8 @@ transformInsertStmt(ParseState *pstate, InsertStmt *stmt,
List *sub_namespace; List *sub_namespace;
List *icolumns; List *icolumns;
List *attrnos; List *attrnos;
List *attnos; List *icols; /* to become ListCell */
List *attnos; /* to become ListCell */
List *tl; List *tl;
qry->commandType = CMD_INSERT; qry->commandType = CMD_INSERT;
@ -665,39 +666,35 @@ transformInsertStmt(ParseState *pstate, InsertStmt *stmt,
/* /*
* Prepare columns for assignment to target table. * Prepare columns for assignment to target table.
*/ */
icols = icolumns;
attnos = attrnos; attnos = attrnos;
/* cannot use foreach here because of possible lremove */ foreach(tl, qry->targetList)
tl = qry->targetList;
while (tl)
{ {
TargetEntry *tle = (TargetEntry *) lfirst(tl); TargetEntry *tle = (TargetEntry *) lfirst(tl);
ResTarget *col; ResTarget *col;
/* must advance tl before lremove possibly pfree's it */ if (icols == NIL || attnos == NIL)
tl = lnext(tl);
if (icolumns == NIL || attnos == NIL)
ereport(ERROR, ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR), (errcode(ERRCODE_SYNTAX_ERROR),
errmsg("INSERT has more expressions than target columns"))); errmsg("INSERT has more expressions than target columns")));
col = (ResTarget *) lfirst(icolumns); col = (ResTarget *) lfirst(icols);
Assert(IsA(col, ResTarget)); Assert(IsA(col, ResTarget));
Assert(!tle->resdom->resjunk); Assert(!tle->resdom->resjunk);
updateTargetListEntry(pstate, tle, col->name, lfirsti(attnos), updateTargetListEntry(pstate, tle, col->name, lfirsti(attnos),
col->indirection); col->indirection);
icolumns = lnext(icolumns); icols = lnext(icols);
attnos = lnext(attnos); attnos = lnext(attnos);
} }
/* /*
* Ensure that the targetlist has the same number of entries that were * Ensure that the targetlist has the same number of entries that were
* present in the columns list. Don't do the check unless an explicit * present in the columns list. Don't do the check unless an explicit
* columns list was given, though. statements. * columns list was given, though.
*/ */
if (stmt->cols != NIL && (icolumns != NIL || attnos != NIL)) if (stmt->cols != NIL && (icols != NIL || attnos != NIL))
ereport(ERROR, ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR), (errcode(ERRCODE_SYNTAX_ERROR),
errmsg("INSERT has more target columns than expressions"))); errmsg("INSERT has more target columns than expressions")));