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/*-------------------------------------------------------------------------
*
* catalog_utils.h--
*
*
*
* Copyright (c) 1994, Regents of the University of California
*
* $Id: parse_func.h,v 1.1 1997/11/25 22:06:56 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef PARSER_FUNC_H
#define PARSER_FUNC_H
#include <nodes/nodes.h>
#include <nodes/pg_list.h>
#include <nodes/parsenodes.h>
#include <nodes/primnodes.h>
#include <parser/parse_func.h>
#include <parser/parse_node.h>
/*
* This structure is used to explore the inheritance hierarchy above
* nodes in the type tree in order to disambiguate among polymorphic
* functions.
*/
typedef struct _InhPaths
{
int nsupers; /* number of superclasses */
Oid self; /* this class */
Oid *supervec; /* vector of superclasses */
} InhPaths;
/*
* This structure holds a list of possible functions or operators that
* agree with the known name and argument types of the function/operator.
*/
typedef struct _CandidateList
{
Oid *args;
struct _CandidateList *next;
} *CandidateList;
Node *ParseFunc(ParseState *pstate, char *funcname, List *fargs,
int *curr_resno);
Oid funcid_get_rettype(Oid funcid);
CandidateList func_get_candidates(char *funcname, int nargs);
bool can_coerce(int nargs, Oid *input_typeids, Oid *func_typeids);
int match_argtypes(int nargs,
Oid *input_typeids,
CandidateList function_typeids,
CandidateList *candidates);
Oid * func_select_candidate(int nargs,
Oid *input_typeids,
CandidateList candidates);
bool func_get_detail(char *funcname,
int nargs,
Oid *oid_array,
Oid *funcid, /* return value */
Oid *rettype, /* return value */
bool *retset, /* return value */
Oid **true_typeids);
Oid ** argtype_inherit(int nargs, Oid *oid_array);
int findsupers(Oid relid, Oid **supervec);
Oid **genxprod(InhPaths *arginh, int nargs);
void make_arguments(int nargs,
List *fargs,
Oid *input_typeids,
Oid *function_typeids);
List *setup_tlist(char *attname, Oid relid);
List *setup_base_tlist(Oid typeid);
Node *ParseComplexProjection(ParseState *pstate,
char *funcname,
Node *first_arg,
bool *attisset);
void func_error(char *caller, char *funcname, int nargs, Oid *argtypes);
#endif /* PARSE_FUNC_H */
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