#include <stdlib.h>

#include "common.h"
#include "memory.h"
#include "vm.h"
#include "value.h"

void* reallocate(void* previous, size_t oldSize, size_t newSize) {
  if (newSize == 0) {
    free(previous);
    return NULL;
  }
  return realloc(previous, newSize);
}

static void freeObject(Obj* object) {
  switch (object->type) {
  case OBJ_STRING: {
    ObjString* string = (ObjString*) object;
    FREE_ARRAY(char, string->chars, string->length + 1);
    FREE(ObjString, object);
    break;
  }
  case OBJ_ARRAY: {
    ObjArray* array = (ObjArray*) object;
    freeValueArray(array->array);
    FREE(ObjArray, object);
    break;
  }
  case OBJ_HASH: {
    ObjHash* hash = (ObjHash*) object;
    freeTable(hash->hashTable);
    FREE(ObjHash, object);
  }
  }
}

void freeObjects() {
  Obj* object = vm.objects;
  while (object != NULL) {
    Obj* next = object->next;
    freeObject(object);
    object = next;
  }
}