Renaming for new subscripting mechanism

Over at patch https://commitfest.postgresql.org/21/1062/ Dmitry wants to
introduce a more generic subscription mechanism, which allows
subscripting not only arrays but also other object types such as JSONB.
That functionality is introduced in a largish invasive patch, out of
which this internal renaming patch was extracted.

Author: Dmitry Dolgov
Reviewed-by: Tom Lane, Arthur Zakirov
Discussion: https://postgr.es/m/CA+q6zcUK4EqPAu7XRRO5CCjMwhz5zvg+rfWuLzVoxp_5sKS6=w@mail.gmail.com

src/backend/parser/parse_expr.c

@@ -465,13 +465,13 @@ transformIndirection(ParseState *pstate, A_Indirection *ind)
 
 			/* process subscripts before this field selection */
 			if (subscripts)
-				result = (Node *) transformArraySubscripts(pstate,
-														   result,
-														   exprType(result),
-														   InvalidOid,
-														   exprTypmod(result),
-														   subscripts,
-														   NULL);
+				result = (Node *) transformContainerSubscripts(pstate,
+															   result,
+															   exprType(result),
+															   InvalidOid,
+															   exprTypmod(result),
+															   subscripts,
+															   NULL);
 			subscripts = NIL;
 
 			newresult = ParseFuncOrColumn(pstate,
@@ -488,13 +488,13 @@ transformIndirection(ParseState *pstate, A_Indirection *ind)
 	}
 	/* process trailing subscripts, if any */
 	if (subscripts)
-		result = (Node *) transformArraySubscripts(pstate,
-												   result,
-												   exprType(result),
-												   InvalidOid,
-												   exprTypmod(result),
-												   subscripts,
-												   NULL);
+		result = (Node *) transformContainerSubscripts(pstate,
+													   result,
+													   exprType(result),
+													   InvalidOid,
+													   exprTypmod(result),
+													   subscripts,
+													   NULL);
 
 	return result;
 }