void arr_add(Array* arr, void* e, JzonAllocator* allocator)
{
if (arr->size == arr->capacity)
arr_grow(arr, allocator);
arr->arr[arr->size] = e;
++arr->size;
}
void arr_insert(Array* arr, void* e, unsigned index, JzonAllocator* allocator)
{
if (arr->size == arr->capacity)
arr_grow(arr, allocator);
memmove(arr->arr + index + 1, arr->arr + index, (arr->size - index) * sizeof(void**));
arr->arr[index] = e;
++arr->size;
}
/* arr_insert • inserting nb elements before the nth one */
int
arr_insert(struct array *arr, int nb, int n) {
char *src, *dst;
size_t len;
if (!arr || nb <= 0 || n < 0
|| !arr_grow(arr, arr->size + nb))
return 0;
if (n < arr->size) {
src = arr->base;
src += n * arr->unit;
dst = src + nb * arr->unit;
len = (arr->size - n) * arr->unit;
memmove(dst, src, len); }
arr->size += nb;
return 1; }
/* arr_newitem • returns the index of a new element appended to the array */
int
arr_newitem(struct array *arr) {
if (!arr_grow(arr, arr->size + 1)) return -1;
arr->size += 1;
return arr->size - 1; }
