Function mathutils_array_parse

source/blender/python/mathutils/mathutils.cc:99–193

}

int mathutils_array_parse(
    float *array, int array_num_min, int array_num_max, PyObject *value, const char *error_prefix)
{
  const uint flag = array_num_max;
  int num;

  array_num_max &= ~MU_ARRAY_FLAGS;

#if 1 /* approx 6x speedup for mathutils types */

  if ((num = VectorObject_Check(value) ? (reinterpret_cast<VectorObject *>(value))->vec_num : 0) ||
      (num = EulerObject_Check(value) ? 3 : 0) || (num = QuaternionObject_Check(value) ? 4 : 0) ||
      (num = ColorObject_Check(value) ? 3 : 0))
  {
    if (BaseMath_ReadCallback((BaseMathObject *)value) == -1) {
      return -1;
    }

    if (flag & MU_ARRAY_SPILL) {
      CLAMP_MAX(num, array_num_max);
    }

    if (num > array_num_max || num < array_num_min) {
      if (array_num_max == array_num_min) {
        PyErr_Format(PyExc_ValueError,
                     "%.200s: sequence length is %d, expected %d",
                     error_prefix,
                     num,
                     array_num_max);
      }
      else {
        PyErr_Format(PyExc_ValueError,
                     "%.200s: sequence length is %d, expected [%d - %d]",
                     error_prefix,
                     num,
                     array_num_min,
                     array_num_max);
      }
      return -1;
    }

    memcpy(array, (reinterpret_cast<const BaseMathObject *>(value))->data, num * sizeof(float));
  }
  else
#endif
  {
    PyObject *value_fast = nullptr;

    /* non list/tuple cases */
    if (!(value_fast = PySequence_Fast(value, error_prefix))) {
      /* PySequence_Fast sets the error */
      return -1;
    }

    num = PySequence_Fast_GET_SIZE(value_fast);

    if (flag & MU_ARRAY_SPILL) {
      CLAMP_MAX(num, array_num_max);