| /*------------------------------------------------------------------------- |
| * |
| * parse_coerce.h |
| * Routines for type coercion. |
| * |
| * |
| * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group |
| * Portions Copyright (c) 1994, Regents of the University of California |
| * |
| * $PostgreSQL: pgsql/src/include/parser/parse_coerce.h,v 1.66 2006/10/04 00:30:09 momjian Exp $ |
| * |
| *------------------------------------------------------------------------- |
| */ |
| #ifndef PARSE_COERCE_H |
| #define PARSE_COERCE_H |
| |
| #include "parser/parse_node.h" |
| |
| |
| 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; |
| |
| |
| 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(ParseState *pstate, |
| Node *expr, Oid exprtype, |
| Oid targettype, int32 targettypmod, |
| CoercionContext ccontext, |
| 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, int location); |
| extern Node *coerce_to_domain(Node *arg, Oid baseTypeId, int32 baseTypeMod, |
| Oid typeId, |
| CoercionForm cformat, int location, |
| bool hideInputCoercion, |
| bool lengthCoercionDone); |
| |
| extern Node *coerce_to_boolean(ParseState *pstate, Node *node, |
| const char *constructName); |
| extern Node *coerce_to_integer(ParseState *pstate, Node *node, |
| const char *constructName); |
| extern Node *coerce_to_bigint(ParseState *pstate, Node *node, |
| const char *constructName); |
| |
| extern Oid select_common_type(List *typeids, const char *context); |
| extern Node *coerce_to_common_type(ParseState *pstate, Node *node, |
| Oid targetTypeId, |
| const char *context); |
| |
| extern void fixup_unknown_vars_in_exprlist(ParseState *pstate, List *exprlist); |
| extern void fixup_unknown_vars_in_targetlist(ParseState *pstate, |
| List *targetlist); |
| extern void fixup_unknown_vars_in_setop(ParseState *pstate, SetOperationStmt *stmt); |
| |
| extern bool check_generic_type_consistency(Oid *actual_arg_types, |
| Oid *declared_arg_types, |
| int nargs); |
| extern Oid enforce_generic_type_consistency(Oid *actual_arg_types, |
| Oid *declared_arg_types, |
| int nargs, |
| Oid rettype); |
| extern Oid resolve_generic_type(Oid declared_type, |
| Oid context_actual_type, |
| Oid context_declared_type); |
| |
| extern bool find_coercion_pathway(Oid targetTypeId, Oid sourceTypeId, |
| CoercionContext ccontext, |
| Oid *funcid); |
| extern Oid find_typmod_coercion_function(Oid typeId); |
| |
| #endif /* PARSE_COERCE_H */ |