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/**
* @file ops.h
* Provides arithematic operators to the parser
*
* Copyright (C) 2018 Clyne Sullivan
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef OPS_H_
#define OPS_H_
#include "variable.h"
/**
* Defines the number of available operators.
*/
#define OPS_COUNT 18
#define OP_MAGIC 0xCAFE3900
typedef int (*opfunc_t)(variable *, variable *, variable *);
/**
* An array of variable objects for each operator, exposed for the parser.
*/
extern variable opvars[];
/**
* An array of operator names, exposed for the parser.
*/
extern const char *opnames[];
/**
* Gets the variable for the given operator.
* @param name the operator (e.g. "+")
* @param retlen if not null, stores the operator string's length here
* @return variable for the operator, zero if not found
*/
variable *igetop(const char *name, int *retlen);
#endif // OPS_H_
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