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00001 /*------------------------------------------------------------------------- 00002 * 00003 * parse_func.h 00004 * 00005 * 00006 * 00007 * Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group 00008 * Portions Copyright (c) 1994, Regents of the University of California 00009 * 00010 * src/include/parser/parse_func.h 00011 * 00012 *------------------------------------------------------------------------- 00013 */ 00014 #ifndef PARSER_FUNC_H 00015 #define PARSER_FUNC_H 00016 00017 #include "catalog/namespace.h" 00018 #include "parser/parse_node.h" 00019 00020 00021 /* 00022 * This structure is used to explore the inheritance hierarchy above 00023 * nodes in the type tree in order to disambiguate among polymorphic 00024 * functions. 00025 */ 00026 typedef struct _InhPaths 00027 { 00028 int nsupers; /* number of superclasses */ 00029 Oid self; /* this class */ 00030 Oid *supervec; /* vector of superclasses */ 00031 } InhPaths; 00032 00033 /* Result codes for func_get_detail */ 00034 typedef enum 00035 { 00036 FUNCDETAIL_NOTFOUND, /* no matching function */ 00037 FUNCDETAIL_MULTIPLE, /* too many matching functions */ 00038 FUNCDETAIL_NORMAL, /* found a matching regular function */ 00039 FUNCDETAIL_AGGREGATE, /* found a matching aggregate function */ 00040 FUNCDETAIL_WINDOWFUNC, /* found a matching window function */ 00041 FUNCDETAIL_COERCION /* it's a type coercion request */ 00042 } FuncDetailCode; 00043 00044 00045 extern Node *ParseFuncOrColumn(ParseState *pstate, 00046 List *funcname, List *fargs, 00047 List *agg_order, bool agg_star, bool agg_distinct, 00048 bool func_variadic, 00049 WindowDef *over, bool is_column, int location); 00050 00051 extern FuncDetailCode func_get_detail(List *funcname, 00052 List *fargs, List *fargnames, 00053 int nargs, Oid *argtypes, 00054 bool expand_variadic, bool expand_defaults, 00055 Oid *funcid, Oid *rettype, 00056 bool *retset, int *nvargs, Oid **true_typeids, 00057 List **argdefaults); 00058 00059 extern int func_match_argtypes(int nargs, 00060 Oid *input_typeids, 00061 FuncCandidateList raw_candidates, 00062 FuncCandidateList *candidates); 00063 00064 extern FuncCandidateList func_select_candidate(int nargs, 00065 Oid *input_typeids, 00066 FuncCandidateList candidates); 00067 00068 extern void make_fn_arguments(ParseState *pstate, 00069 List *fargs, 00070 Oid *actual_arg_types, 00071 Oid *declared_arg_types); 00072 00073 extern const char *funcname_signature_string(const char *funcname, int nargs, 00074 List *argnames, const Oid *argtypes); 00075 extern const char *func_signature_string(List *funcname, int nargs, 00076 List *argnames, const Oid *argtypes); 00077 00078 extern Oid LookupFuncName(List *funcname, int nargs, const Oid *argtypes, 00079 bool noError); 00080 extern Oid LookupFuncNameTypeNames(List *funcname, List *argtypes, 00081 bool noError); 00082 extern Oid LookupAggNameTypeNames(List *aggname, List *argtypes, 00083 bool noError); 00084 00085 #endif /* PARSE_FUNC_H */
1.7.1