#include <array.h>
#include <helpers.h>
#include <stdlib.h>

array_t *init_array() {
  array_t *a = safe_calloc(1, sizeof(array_t));
  a->capacity = DEFAULT_ARR_LEN;
  a->size = 0;
  a->items = safe_calloc(a->capacity, sizeof(void *));
  return a;
}

void array_push(array_t *a, void *item) {
  if (a->size >= a->capacity - 2) {
    a->capacity *= 2;
    a->items = realloc(a->items, a->capacity);
  }
  a->items[a->size] = item;
  a->size++;
}

void *array_pop(array_t *a) {
  if (a->size <= 0)
    return NULL;
  void *retval = a->items[a->size];
  a->size--;
  return retval;
}

void array_free(void *x, void (*freefunc)(void *)) {
  array_t *a = (array_t *)x;
  for (int i = 0; i < a->size; i++) {
    freefunc(a->items[i]);
  }
  free(a->items);
  free(a);
}