LCOM1920-T5G03

#include <lcom/lcf.h>

#include "queue.h"

#include "list.h"

#include "errors.h"

struct queue{

    list_t *l;

};

queue_t* (queue_ctor )(void){

    queue_t *ret = malloc(sizeof(queue_t));

    if(ret == NULL) return NULL;

    ret->l = list_ctor();

    if(ret->l == NULL){

        queue_dtor(ret);

        return NULL;

    }

    return ret;

}

int      (queue_dtor )(queue_t *q){

    int r;

    if((r = list_dtor(q->l))) return r;

    free(q);

    return SUCCESS;

}

size_t   (queue_size )(const queue_t *q           ){ return list_size (q->l); }

int      (queue_empty)(const queue_t *q           ){ return list_empty(q->l); }

void     (queue_push )(      queue_t *q, void *val){ list_push_back(q->l, val); }

void*    (queue_top  )(const queue_t *q           ){ return *list_front(q->l); }

void     (queue_pop  )(      queue_t *q           ){ list_pop_front(q->l); }