database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-17 17:02:08 +03:00
Code Activity

Infrastructure for deducing Param types from context, in the same way

Browse Source 
that the types of untyped string-literal constants are deduced (ie,
when coerce_type is applied to 'em, that's what the type must be).
Remove the ancient hack of storing the input Param-types array as a
global variable, and put the info into ParseState instead.  This touches
a lot of files because of adjustment of routine parameter lists, but
it's really not a large patch.  Note: PREPARE statement still insists on
exact specification of parameter types, but that could easily be relaxed
now, if we wanted to do so.
This commit is contained in:
Tom Lane
2003-04-29 22:13:11 +00:00
parent 19141f5584
commit aa282d4446
29 changed files with 442 additions and 247 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
src/backend/parser/parse_oper.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_oper.c,v 1.62 2003/04/08 23:20:02 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_oper.c,v 1.63 2003/04/29 22:13:10 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1019,9 +1019,12 @@ unary_op_error(List *op, Oid arg, bool is_left_op)
*
* Transform operator expression ensuring type compatibility.
* This is where some type conversion happens.
*
* As with coerce_type, pstate may be NULL if no special unknown-Param
* processing is wanted.
*/
Expr *
make_op(List *opname, Node *ltree, Node *rtree)
make_op(ParseState *pstate, List *opname, Node *ltree, Node *rtree)
{
Oid ltypeId,
rtypeId;
@ -1052,7 +1055,7 @@ make_op(List *opname, Node *ltree, Node *rtree)
}
/* Do typecasting and build the expression tree */
result = make_op_expr(tup, ltree, rtree, ltypeId, rtypeId);
result = make_op_expr(pstate, tup, ltree, rtree, ltypeId, rtypeId);
ReleaseSysCache(tup);
@ -1063,9 +1066,13 @@ make_op(List *opname, Node *ltree, Node *rtree)
/*
* make_op_expr()
* Build operator expression using an already-looked-up operator.
*
* As with coerce_type, pstate may be NULL if no special unknown-Param
* processing is wanted.
*/
Expr *
make_op_expr(Operator op, Node *ltree, Node *rtree,
make_op_expr(ParseState *pstate, Operator op,
Node *ltree, Node *rtree,
Oid ltypeId, Oid rtypeId)
{
Form_pg_operator opform = (Form_pg_operator) GETSTRUCT(op);
@ -1114,7 +1121,7 @@ make_op_expr(Operator op, Node *ltree, Node *rtree,
opform->oprresult);
/* perform the necessary typecasting of arguments */
make_fn_arguments(args, actual_arg_types, declared_arg_types);
make_fn_arguments(pstate, args, actual_arg_types, declared_arg_types);
/* and build the expression node */
result = makeNode(OpExpr);