* Routines for type coercion.
*
*
- * Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/parser/parse_coerce.h,v 1.75 2008/01/11 18:39:41 tgl Exp $
+ * src/include/parser/parse_coerce.h
*
*-------------------------------------------------------------------------
*/
#include "parser/parse_node.h"
-/* Type categories (kluge ... ought to be extensible) */
-typedef enum CATEGORY
-{
- INVALID_TYPE,
- UNKNOWN_TYPE,
- GENERIC_TYPE,
- BOOLEAN_TYPE,
- STRING_TYPE,
- BITSTRING_TYPE,
- NUMERIC_TYPE,
- DATETIME_TYPE,
- TIMESPAN_TYPE,
- GEOMETRIC_TYPE,
- NETWORK_TYPE,
- USER_TYPE
-} CATEGORY;
+/* Type categories (see TYPCATEGORY_xxx symbols in catalog/pg_type.h) */
+typedef char TYPCATEGORY;
/* Result codes for find_coercion_pathway */
typedef enum CoercionPathType
extern bool IsBinaryCoercible(Oid srctype, Oid targettype);
-extern bool IsPreferredType(CATEGORY category, Oid type);
-extern CATEGORY TypeCategory(Oid type);
+extern bool IsPreferredType(TYPCATEGORY category, Oid type);
+extern TYPCATEGORY TypeCategory(Oid type);
extern Node *coerce_to_target_type(ParseState *pstate,
Node *expr, Oid exprtype,
Oid targettype, int32 targettypmod,
CoercionContext ccontext,
- CoercionForm cformat);
+ CoercionForm cformat,
+ int location);
extern bool can_coerce_type(int nargs, Oid *input_typeids, Oid *target_typeids,
CoercionContext ccontext);
extern Node *coerce_type(ParseState *pstate, Node *node,
Oid inputTypeId, Oid targetTypeId, int32 targetTypeMod,
- CoercionContext ccontext, CoercionForm cformat);
+ CoercionContext ccontext, CoercionForm cformat, int location);
extern Node *coerce_to_domain(Node *arg, Oid baseTypeId, int32 baseTypeMod,
Oid typeId,
- CoercionForm cformat, bool hideInputCoercion,
+ CoercionForm cformat, int location,
+ bool hideInputCoercion,
bool lengthCoercionDone);
extern Node *coerce_to_boolean(ParseState *pstate, Node *node,
Oid targetTypeId,
const char *constructName);
-extern Oid select_common_type(List *typeids, const char *context);
+extern int parser_coercion_errposition(ParseState *pstate,
+ int coerce_location,
+ Node *input_expr);
+
+extern Oid select_common_type(ParseState *pstate, List *exprs,
+ const char *context, Node **which_expr);
extern Node *coerce_to_common_type(ParseState *pstate, Node *node,
Oid targetTypeId,
const char *context);