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/**
* mds — A micro-display server
* Copyright © 2014, 2015, 2016, 2017 Mattias Andrée (maandree@kth.se)
*
* 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 <http://www.gnu.org/licenses/>.
*/
#ifndef MDS_MDS_KBDC_BUILTIN_FUNCTIONS_H
#define MDS_MDS_KBDC_BUILTIN_FUNCTIONS_H
#include "string.h"
#include <stddef.h>
#include <stdarg.h>
/**
* Check whether a function is a builtin function
*
* @param name The name of the function
* @param arg_count The number of arguments to pass to the function
* @return Whether the described function is a builtin function
*/
__attribute__((pure))
int builtin_function_defined(const char *restrict name, size_t arg_count);
/**
* Invoke a builtin function
*
* The function will abort if an non-builtin function is addressed
*
* Before invoking set/3 or get/2, please check the arguments,
* please also check that either all or none of the arguments
* are empty string for any of the other builtin functions
*
* @param name The name of the function
* @param arg_count The number of arguments to pass to the function
* @param args The arguments to pass
* @return The return value of the function, `NULL` on error
*/
char32_t *builtin_function_invoke(const char *restrict name, size_t arg_count, const char32_t **restrict args);
#endif
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