Method begin_array

dds/DCPS/Xcdr2ValueWriter.cpp:309–332

Array and sequence can be treated similar to final/appendable struct. If the element type is primitive, it is similar to a final struct with no delimiter. If the element type is not primitive, it is similar to an appendable struct with a delimiter. In both case, elements are serialized back-to-back similarly to final/appendable struct. One difference is that sequence has a length field ahead of th

// In both case, elements are serialized back-to-back similarly to final/appendable struct.
// One difference is that sequence has a length field ahead of the elements.
bool Xcdr2ValueWriter::begin_array(XTypes::TypeKind elem_tk)
{
  // TODO: Revisit for multi-dimensional array with typedef.
  // See https://github.com/OpenDDS/OpenDDS/issues/4453 for related issue in opendds_idl.
  // Potential solution: resolve all the intermediary typedefs to get the actual final
  // element type and at the same time keep track the dimensions of the array in the
  // vwrite_array function in DynamicVwrite.cpp.

  Extensibility arr_exten = FINAL;
  // In case the element type is not primitive, account for the Dheader only when this is
  // called for the outermost dimension of the array.
  const bool primitive_elem_kind = XTypes::is_primitive(elem_tk);
  if (mode_ == SERIALIZATION_SIZE_MODE) {
    if (size_states_.top().collection_kind != ARRAY_KIND && !primitive_elem_kind) {
      arr_exten = APPENDABLE;
    }
  } else {
    if (serialize_states_.top().collection_kind != ARRAY_KIND && !primitive_elem_kind) {
      arr_exten = APPENDABLE;
    }
  }

  return begin_complex(arr_exten, ARRAY_KIND);
}

bool Xcdr2ValueWriter::end_array()
{