#ifndef QUEUE_H
#define QUEUE_H

#include <stdbool.h>

/*
 * Macro to create a new queue.
 */
#define queue(q) queue* q = newQueue();

typedef struct queue_element{
    void* next;
    void* element;
} queue_element;

typedef struct queue{

    int size;                            /*         The number of at in use           */
    queue_element* front;                /* pointer to the first element of the queue */
    queue_element* back;                 /* pointer to the back element of the queue  */

    void (*toString)();                      /*   Pointer to toString function   */
} queue;


/* 
 * Creates new queue.
 */
queue* newQueue();

/*
 * Adds a new element to the queue.
 */
void queuePush(queue* q, void* element);

void queuePrint(queue* q);

void queuePop(queue* q);

bool queueIsEmpty(queue* q);

void queueMerge(queue* q1, queue* q2);

void queueClear(queue* q);

void queueFree(queue* q);

#endif