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- /*-------------------------------------------------------------------------
- *
- * parse_oper.h
- * handle operator things for parser
- *
- *
- * Portions Copyright (c) 1996-2016, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- * src/include/parser/parse_oper.h
- *
- *-------------------------------------------------------------------------
- */
- #ifndef PARSE_OPER_H
- #define PARSE_OPER_H
- #include "access/htup.h"
- #include "parser/parse_node.h"
- typedef HeapTuple Operator;
- /* Routines to look up an operator given name and exact input type(s) */
- extern Oid LookupOperName(ParseState *pstate, List *opername,
- Oid oprleft, Oid oprright,
- bool noError, int location);
- extern Oid LookupOperNameTypeNames(ParseState *pstate, List *opername,
- TypeName *oprleft, TypeName *oprright,
- bool noError, int location);
- /* Routines to find operators matching a name and given input types */
- /* NB: the selected operator may require coercion of the input types! */
- extern Operator oper(ParseState *pstate, List *op, Oid arg1, Oid arg2,
- bool noError, int location);
- extern Operator right_oper(ParseState *pstate, List *op, Oid arg,
- bool noError, int location);
- extern Operator left_oper(ParseState *pstate, List *op, Oid arg,
- bool noError, int location);
- /* Routines to find operators that DO NOT require coercion --- ie, their */
- /* input types are either exactly as given, or binary-compatible */
- extern Operator compatible_oper(ParseState *pstate, List *op,
- Oid arg1, Oid arg2,
- bool noError, int location);
- /* currently no need for compatible_left_oper/compatible_right_oper */
- /* Routines for identifying "<", "=", ">" operators for a type */
- extern void get_sort_group_operators(Oid argtype,
- bool needLT, bool needEQ, bool needGT,
- Oid *ltOpr, Oid *eqOpr, Oid *gtOpr,
- bool *isHashable);
- /* Convenience routines for common calls on the above */
- extern Oid compatible_oper_opid(List *op, Oid arg1, Oid arg2, bool noError);
- /* Extract operator OID or underlying-function OID from an Operator tuple */
- extern Oid oprid(Operator op);
- extern Oid oprfuncid(Operator op);
- /* Build expression tree for an operator invocation */
- extern Expr *make_op(ParseState *pstate, List *opname,
- Node *ltree, Node *rtree, int location);
- extern Expr *make_scalar_array_op(ParseState *pstate, List *opname,
- bool useOr,
- Node *ltree, Node *rtree, int location);
- #endif /* PARSE_OPER_H */
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