From a0bf885f9eaccadd23b766ecbc064f17f06ae883 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Thu, 12 Dec 2002 15:49:42 +0000
Subject: Phase 2 of read-only-plans project: restructure expression-tree nodes
 so that all executable expression nodes inherit from a common supertype Expr.
  This is somewhat of an exercise in code purity rather than any real
 functional advance, but getting rid of the extra Oper or Func node formerly
 used in each operator or function call should provide at least a little space
 and speed improvement. initdb forced by changes in stored-rules
 representation.

---
 src/backend/parser/parse_target.c | 21 +++++++++++----------
 1 file changed, 11 insertions(+), 10 deletions(-)

(limited to 'src/backend/parser/parse_target.c')

diff --git a/src/backend/parser/parse_target.c b/src/backend/parser/parse_target.c
index 1a2da6da1eb..5e4e23db920 100644
--- a/src/backend/parser/parse_target.c
+++ b/src/backend/parser/parse_target.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/parser/parse_target.c,v 1.92 2002/11/15 02:50:09 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/parser/parse_target.c,v 1.93 2002/12/12 15:49:39 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -79,7 +79,7 @@ transformTargetEntry(ParseState *pstate,
 						 colname,
 						 resjunk);
 
-	return makeTargetEntry(resnode, expr);
+	return makeTargetEntry(resnode, (Expr *) expr);
 }
 
 
@@ -225,7 +225,7 @@ updateTargetListEntry(ParseState *pstate,
 					  int attrno,
 					  List *indirection)
 {
-	Oid			type_id = exprType(tle->expr);	/* type of value provided */
+	Oid			type_id = exprType((Node *) tle->expr);	/* type of value provided */
 	Oid			attrtype;		/* type of target column */
 	int32		attrtypmod;
 	Resdom	   *resnode = tle->resdom;
@@ -277,8 +277,8 @@ updateTargetListEntry(ParseState *pstate,
 										attrtypmod,
 										indirection,
 										pstate->p_is_insert,
-										tle->expr);
-		tle->expr = (Node *) aref;
+										(Node *) tle->expr);
+		tle->expr = (Expr *) aref;
 	}
 	else
 	{
@@ -289,10 +289,11 @@ updateTargetListEntry(ParseState *pstate,
 		 */
 		if (type_id != InvalidOid)
 		{
-			tle->expr = coerce_to_target_type(tle->expr, type_id,
-											  attrtype, attrtypmod,
-											  COERCION_ASSIGNMENT,
-											  COERCE_IMPLICIT_CAST);
+			tle->expr = (Expr *)
+				coerce_to_target_type((Node *) tle->expr, type_id,
+									  attrtype, attrtypmod,
+									  COERCION_ASSIGNMENT,
+									  COERCE_IMPLICIT_CAST);
 			if (tle->expr == NULL)
 				elog(ERROR, "column \"%s\" is of type %s"
 					 " but expression is of type %s"
@@ -501,7 +502,7 @@ FigureColnameInternal(Node *node, char **name)
 			}
 			break;
 		case T_CaseExpr:
-			strength = FigureColnameInternal(((CaseExpr *) node)->defresult,
+			strength = FigureColnameInternal((Node *) ((CaseExpr *) node)->defresult,
 											 name);
 			if (strength <= 1)
 			{
-- 
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