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/*------------------------------------------------------------------------- * * parse_func.h * * * * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * src/include/parser/parse_func.h * *------------------------------------------------------------------------- */ #ifndef PARSER_FUNC_H #define PARSER_FUNC_H #include "catalog/namespace.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; /* Result codes for func_get_detail */ typedef enum { FUNCDETAIL_NOTFOUND, /* no matching function */ FUNCDETAIL_MULTIPLE, /* too many matching functions */ FUNCDETAIL_NORMAL, /* found a matching regular function */ FUNCDETAIL_AGGREGATE, /* found a matching aggregate function */ FUNCDETAIL_WINDOWFUNC, /* found a matching window function */ FUNCDETAIL_COERCION /* it's a type coercion request */ } FuncDetailCode; extern Node *ParseFuncOrColumn(ParseState *pstate, List *funcname, List *fargs, List *agg_order, bool agg_star, bool agg_distinct, bool func_variadic, WindowDef *over, bool is_column, int location); extern FuncDetailCode func_get_detail(List *funcname, List *fargs, List *fargnames, int nargs, Oid *argtypes, bool expand_variadic, bool expand_defaults, Oid *funcid, Oid *rettype, bool *retset, int *nvargs, Oid **true_typeids, List **argdefaults); extern int func_match_argtypes(int nargs, Oid *input_typeids, FuncCandidateList raw_candidates, FuncCandidateList *candidates); extern FuncCandidateList func_select_candidate(int nargs, Oid *input_typeids, FuncCandidateList candidates); extern void make_fn_arguments(ParseState *pstate, List *fargs, Oid *actual_arg_types, Oid *declared_arg_types); extern const char *funcname_signature_string(const char *funcname, int nargs, List *argnames, const Oid *argtypes); extern const char *func_signature_string(List *funcname, int nargs, List *argnames, const Oid *argtypes); extern Oid LookupFuncName(List *funcname, int nargs, const Oid *argtypes, bool noError); extern Oid LookupFuncNameTypeNames(List *funcname, List *argtypes, bool noError); extern Oid LookupAggNameTypeNames(List *aggname, List *argtypes, bool noError); #endif /* PARSE_FUNC_H */