granicus.if.org Git - postgresql/blob - src/include/parser/parse_func.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * parse_func.h
   4  *
   5  *
   6  *
   7  * Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  * src/include/parser/parse_func.h
  11  *
  12  *-------------------------------------------------------------------------
  13  */
  14 #ifndef PARSER_FUNC_H
  15 #define PARSER_FUNC_H
  16
  17 #include "catalog/namespace.h"
  18 #include "parser/parse_node.h"
  19
  20
  21 /* Result codes for func_get_detail */
  22 typedef enum
  23 {
  24         FUNCDETAIL_NOTFOUND,            /* no matching function */
  25         FUNCDETAIL_MULTIPLE,            /* too many matching functions */
  26         FUNCDETAIL_NORMAL,                      /* found a matching regular function */
  27         FUNCDETAIL_AGGREGATE,           /* found a matching aggregate function */
  28         FUNCDETAIL_WINDOWFUNC,          /* found a matching window function */
  29         FUNCDETAIL_COERCION                     /* it's a type coercion request */
  30 } FuncDetailCode;
  31
  32
  33 extern Node *ParseFuncOrColumn(ParseState *pstate, List *funcname, List *fargs,
  34                                   Node *last_srf, FuncCall *fn, int location);
  35
  36 extern FuncDetailCode func_get_detail(List *funcname,
  37                                 List *fargs, List *fargnames,
  38                                 int nargs, Oid *argtypes,
  39                                 bool expand_variadic, bool expand_defaults,
  40                                 Oid *funcid, Oid *rettype,
  41                                 bool *retset, int *nvargs, Oid *vatype,
  42                                 Oid **true_typeids, List **argdefaults);
  43
  44 extern int func_match_argtypes(int nargs,
  45                                         Oid *input_typeids,
  46                                         FuncCandidateList raw_candidates,
  47                                         FuncCandidateList *candidates);
  48
  49 extern FuncCandidateList func_select_candidate(int nargs,
  50                                           Oid *input_typeids,
  51                                           FuncCandidateList candidates);
  52
  53 extern void make_fn_arguments(ParseState *pstate,
  54                                   List *fargs,
  55                                   Oid *actual_arg_types,
  56                                   Oid *declared_arg_types);
  57
  58 extern const char *funcname_signature_string(const char *funcname, int nargs,
  59                                                   List *argnames, const Oid *argtypes);
  60 extern const char *func_signature_string(List *funcname, int nargs,
  61                                           List *argnames, const Oid *argtypes);
  62
  63 extern Oid LookupFuncName(List *funcname, int nargs, const Oid *argtypes,
  64                            bool noError);
  65 extern Oid LookupFuncWithArgs(ObjectWithArgs *func,
  66                                    bool noError);
  67 extern Oid LookupAggWithArgs(ObjectWithArgs *agg,
  68                                   bool noError);
  69
  70 extern void check_srf_call_placement(ParseState *pstate, Node *last_srf,
  71                                                  int location);
  72
  73 #endif                                                  /* PARSE_FUNC_H */