Array.c

#include "Array.h"

void array_add(Array *r, void *e) {
  if (r->usage == r->capacity) {
    r->capacity *= 2;
    r->data = (void **)realloc(r->data, r->capacity * sizeof(void *));
  }
  r->data[r->usage++] = e;
}

void array_delete(Array *r, void (*valuefreefunc)(void *)) {

  if (valuefreefunc != NULL) {
    for (int i = 0; i < array_size(r); i++) {
      valuefreefunc(array_get(r, i));
    }
  }

  free(r->data);
  r->data = NULL;
  r->capacity = r->usage = 0;
  free(r);
  r = NULL;
}

void *array_get(Array *r, int index) {
  assert(index < r->usage);
  return r->data[index];
}

Array *array_new() {
  Array *r = (Array *)malloc( sizeof(Array) );
  r->capacity = INITIAL_ARRAY_SIZE;
  r->usage = 0;
  r->data = (void **)malloc(r->capacity * sizeof(void *));
  return r;
}

size_t array_size(Array *r) {
  return r->usage;
}

Array *array_concat(Array *first, Array *second) {

  Array *joined = array_new();

  for (int i = 0; i < array_size(first); i++) {
    array_add(joined, array_get(first, i));
  }

  for (int i = 0; i < array_size(second); i++) {
    array_add(joined, array_get(second, i));
  }

  return joined;

}