Method toString

matlab/src/cpp/arrow/matlab/array/proxy/array.cc:51–85

std::shared_ptr<arrow::Array> Array::unwrap() { return array; }

void Array::toString(libmexclass::proxy::method::Context& context) {
  ::matlab::data::ArrayFactory factory;

  auto opts = arrow::PrettyPrintOptions::Defaults();
  opts.window = 3;
  opts.indent = 4;
  opts.indent_size = 4;

  const auto type_id = array->type()->id();
  if (arrow::is_primitive(type_id) || arrow::is_string(type_id)) {
    /*
     * Display primitive and string types horizontally without
     * opening and closing delimiters. Use " | " as the delimiter
     * between elements. Below is an example Int32Array display:
     *
     *    1 | 2 | 3 | ... | 6 | 7 | 8
     */
    opts.skip_new_lines = true;
    opts.array_delimiters.open = "";
    opts.array_delimiters.close = "";
    opts.array_delimiters.element = " | ";
  }

  std::stringstream ss;
  MATLAB_ERROR_IF_NOT_OK_WITH_CONTEXT(arrow::PrettyPrint(*array, opts, &ss), context,
                                      error::ARRAY_PRETTY_PRINT_FAILED);

  const auto str_utf8 = opts.skip_new_lines ? "    " + ss.str() : ss.str();

  MATLAB_ASSIGN_OR_ERROR_WITH_CONTEXT(const auto str_utf16,
                                      arrow::util::UTF8StringToUTF16(str_utf8), context,
                                      error::UNICODE_CONVERSION_ERROR_ID);
  auto str_mda = factory.createScalar(str_utf16);
  context.outputs[0] = str_mda;
}

void Array::getNumElements(libmexclass::proxy::method::Context& context) {
  ::matlab::data::ArrayFactory factory;