/* Copyright (C) 2025 Aryadev Chavali

 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU General Public License Version 2 for
 * details.

 * You may distribute and modify this code under the terms of the GNU General
 * Public License Version 2, which you should have received a copy of along with
 * this program.  If not, please go to <https://www.gnu.org/licenses/>.

 * Created: 2025-04-15
 * Description: Vector implementation
 */

#include "./vec.h"

#include <malloc.h>
#include <string.h>

void vec_reserve(arena_t *allocator, vec_t *vec, u32 size)
{
  if (vec->cap - vec->size < size)
  {
    u32 old_cap = vec->cap;
    vec->cap    = MAX(vec->cap * 1.5, vec->size + size);
    vec->data   = arena_realloc(allocator, vec->data, old_cap, vec->cap);
  }
}

u32 vec_append(arena_t *allocator, vec_t *vec, const void *data, u32 size)
{
  vec_reserve(allocator, vec, size);
  memcpy(vec->data + vec->size, data, size);
  u32 ptr = vec->size;
  vec->size += size;
  return ptr;
}