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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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17
src/include/parser/parse_coerce.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: parse_coerce.h,v 1.50 2003/04/08 23:20:04 tgl Exp $
* $Id: parse_coerce.h,v 1.51 2003/04/29 22:13:11 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -17,6 +17,7 @@
#include "catalog/pg_type.h"
#include "parser/parse_node.h"
typedef enum CATEGORY
{
INVALID_TYPE,
@@ -38,22 +39,26 @@ extern bool IsBinaryCoercible(Oid srctype, Oid targettype);
extern bool IsPreferredType(CATEGORY category, Oid type);
extern CATEGORY TypeCategory(Oid type);
extern Node *coerce_to_target_type(Node *expr, Oid exprtype,
extern Node *coerce_to_target_type(ParseState *pstate,
Node *expr, Oid exprtype,
Oid targettype, int32 targettypmod,
CoercionContext ccontext,
CoercionForm cformat);
extern bool can_coerce_type(int nargs, Oid *input_typeids, Oid *target_typeids,
CoercionContext ccontext);
extern Node *coerce_type(Node *node, Oid inputTypeId, Oid targetTypeId,
extern Node *coerce_type(ParseState *pstate, Node *node,
Oid inputTypeId, Oid targetTypeId,
CoercionContext ccontext, CoercionForm cformat);
extern Node *coerce_to_domain(Node *arg, Oid baseTypeId, Oid typeId,
CoercionForm cformat);
extern Node *coerce_to_boolean(Node *node, const char *constructName);
extern Node *coerce_to_boolean(ParseState *pstate, Node *node,
const char *constructName);
extern Oid select_common_type(List *typeids, const char *context);
extern Node *coerce_to_common_type(Node *node, Oid targetTypeId,
const char *context);
extern Node *coerce_to_common_type(ParseState *pstate, Node *node,
Oid targetTypeId,
const char *context);
extern bool check_generic_type_consistency(Oid *actual_arg_types,
Oid *declared_arg_types,