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aa282d4446
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.
76 lines
2.2 KiB
C
76 lines
2.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* parse_coerce.h
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* Routines for type coercion.
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*
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*
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* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: parse_coerce.h,v 1.51 2003/04/29 22:13:11 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PARSE_COERCE_H
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#define PARSE_COERCE_H
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#include "catalog/pg_type.h"
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#include "parser/parse_node.h"
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typedef enum CATEGORY
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{
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INVALID_TYPE,
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UNKNOWN_TYPE,
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GENERIC_TYPE,
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BOOLEAN_TYPE,
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STRING_TYPE,
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BITSTRING_TYPE,
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NUMERIC_TYPE,
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DATETIME_TYPE,
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TIMESPAN_TYPE,
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GEOMETRIC_TYPE,
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NETWORK_TYPE,
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USER_TYPE
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} CATEGORY;
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extern bool IsBinaryCoercible(Oid srctype, Oid targettype);
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extern bool IsPreferredType(CATEGORY category, Oid type);
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extern CATEGORY TypeCategory(Oid type);
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extern Node *coerce_to_target_type(ParseState *pstate,
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Node *expr, Oid exprtype,
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Oid targettype, int32 targettypmod,
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CoercionContext ccontext,
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CoercionForm cformat);
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extern bool can_coerce_type(int nargs, Oid *input_typeids, Oid *target_typeids,
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CoercionContext ccontext);
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extern Node *coerce_type(ParseState *pstate, Node *node,
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Oid inputTypeId, Oid targetTypeId,
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CoercionContext ccontext, CoercionForm cformat);
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extern Node *coerce_to_domain(Node *arg, Oid baseTypeId, Oid typeId,
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CoercionForm cformat);
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extern Node *coerce_to_boolean(ParseState *pstate, Node *node,
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const char *constructName);
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extern Oid select_common_type(List *typeids, const char *context);
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extern Node *coerce_to_common_type(ParseState *pstate, Node *node,
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Oid targetTypeId,
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const char *context);
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extern bool check_generic_type_consistency(Oid *actual_arg_types,
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Oid *declared_arg_types,
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int nargs);
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extern Oid enforce_generic_type_consistency(Oid *actual_arg_types,
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Oid *declared_arg_types,
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int nargs,
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Oid rettype);
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extern bool find_coercion_pathway(Oid targetTypeId, Oid sourceTypeId,
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CoercionContext ccontext,
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Oid *funcid);
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extern Oid find_typmod_coercion_function(Oid typeId, int *nargs);
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#endif /* PARSE_COERCE_H */
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