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

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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
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16
src/backend/parser/parse_func.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_func.c,v 1.146 2003/04/24 21:16:43 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_func.c,v 1.147 2003/04/29 22:13:10 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -253,7 +253,8 @@ ParseFuncOrColumn(ParseState *pstate, List *funcname, List *fargs,
* We can do it as a trivial coercion. coerce_type can handle
* these cases, so why duplicate code...
*/
return coerce_type(lfirst(fargs), actual_arg_types[0], rettype,
return coerce_type(pstate, lfirst(fargs), actual_arg_types[0],
rettype,
COERCION_EXPLICIT, COERCE_EXPLICIT_CALL);
}
else if (fdresult == FUNCDETAIL_NORMAL)
@ -316,7 +317,7 @@ ParseFuncOrColumn(ParseState *pstate, List *funcname, List *fargs,
rettype);
/* perform the necessary typecasting of arguments */
make_fn_arguments(fargs, actual_arg_types, declared_arg_types);
make_fn_arguments(pstate, fargs, actual_arg_types, declared_arg_types);
/* build the appropriate output structure */
if (fdresult == FUNCDETAIL_NORMAL)
@ -1145,9 +1146,13 @@ typeInheritsFrom(Oid subclassTypeId, Oid superclassTypeId)
* allowed.
*
* Caution: given argument list is modified in-place.
*
* As with coerce_type, pstate may be NULL if no special unknown-Param
* processing is wanted.
*/
void
make_fn_arguments(List *fargs,
make_fn_arguments(ParseState *pstate,
List *fargs,
Oid *actual_arg_types,
Oid *declared_arg_types)
{
@ -1159,7 +1164,8 @@ make_fn_arguments(List *fargs,
/* types don't match? then force coercion using a function call... */
if (actual_arg_types[i] != declared_arg_types[i])
{
lfirst(current_fargs) = coerce_type(lfirst(current_fargs),
lfirst(current_fargs) = coerce_type(pstate,
lfirst(current_fargs),
actual_arg_types[i],
declared_arg_types[i],
COERCION_IMPLICIT,