monty.h

#ifndef MONTY_H
#define MONTY_H

#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>

extern int mode;
/**
 * struct stack_s - doubly linked list representation of a stack (or queue)
 * @n: integer
 * @prev: points to the previous element of the stack (or queue)
 * @next: points to the next element of the stack (or queue)
 *
 * Description: doubly linked list node structure
 * for stack, queues, LIFO, FIFO
 */
typedef struct stack_s
{
        int n;
        struct stack_s *prev;
        struct stack_s *next;
} stack_t;

/**
 * struct instruction_s - opcode and its function
 * @opcode: the opcode
 * @f: function to handle the opcode
 *
 * Description: opcode and its function
 * for stack, queues, LIFO, FIFO
 */
typedef struct instruction_s
{
        char *opcode;
        void (*f)(stack_t **stack, unsigned int line_number);
} instruction_t;


/* Stack Functions */
int add_node(stack_t **head, int value);
int delete_node(stack_t **head);
void free_stack(stack_t *head);

/* Stack Operations */
int push(stack_t **stack, unsigned int line_number, char *n);
void pall(stack_t **stack, unsigned int line_number);
void pint(stack_t **stack, unsigned int line_number);
void pop(stack_t **stack, unsigned int line_number);
void swap(stack_t **stack, unsigned int line_number);
void _add(stack_t **stack, unsigned int line_number);
void nop(stack_t **stack __attribute__((unused)), unsigned int line_number __attribute__((unused)));
void _sub(stack_t **stack, unsigned int line_number);
void _div(stack_t **stack, unsigned int line_number);
void _mul(stack_t **stack, unsigned int line_number);
void _mod(stack_t **stack, unsigned int line_number);
void pchar(stack_t **stack, unsigned int line_number);
void pstr(stack_t **stack, unsigned int line_number);
void rotl(stack_t **stack, unsigned int line_number);
void rotr(stack_t **stack, unsigned int line_number);
void stack(stack_t **stack __attribute__((unused)), unsigned int line_number __attribute__((unused)));
void queue(stack_t **stack __attribute__((unused)), unsigned int line_number __attribute__((unused)));

/* Miscellaneous */
void (*get_op(char *name))(stack_t **stack, unsigned int line_number);
int is_number(char *token);
void run_code(char *buf);

#endif