tuple static method

Tuple4<String, String, String, String> tuple(Iterable<SerField> sers, { String? type, bool nullable = false, })

Implementation

static Tuple4<String, String, String, String> tuple(
  Iterable<SerField> sers, {
  String? type,
  bool nullable = false,
}) {
  if (sers.isEmpty) {
    return Tuple4('<dynamic>[[]]', '[]', 'List<dynamic>',
        'IDL.Tuple(<CType<dynamic>>[],)');
  }
  final ser = StringBuffer();
  final deser = StringBuffer();
  final types = [];
  final idl = [];
  for (int i = 0; i < sers.length; ++i) {
    final f = sers.elementAt(i);
    types.add(f.type.nullable(f.nullable));
    idl.add(f.idl);
    final ind = i + 1;
    final s = f.ser;
    if (s != null) {
      ser.write(s.replaceAll(ph, '$ph.item$ind'));
    } else {
      ser.write('$ph.item$ind');
    }
    ser.write(',');
    final d = f.deser;
    if (d != null) {
      deser.write(d.replaceAll(ph, '$ph[$i]'));
    } else {
      deser.write('$ph[$i]');
    }
    deser.write(',');
  }
  final dartTypes = types.join(',');
  final one = sers.length == 1;
  if (one) {
    final deserStr = deser.toString();
    return Tuple4(
      nullable ? '$ph==null?<dynamic>[]:<dynamic>[$ser]' : '<dynamic>[$ser]',
      type == null
          ? deserStr.substring(0, deserStr.length - 1)
          : '$type.fromList(<dynamic>[$deser],)',
      type ?? dartTypes,
      "IDL.Tuple(<CType<dynamic>>[${idl.join(",")}],)",
    );
  }
  return Tuple4(
    nullable ? '$ph==null?<dynamic>[]:<dynamic>[$ser]' : '<dynamic>[$ser]',
    type == null
        ? 'Tuple${sers.length}<$dartTypes>.fromList(<dynamic>[$deser],)'
        : '$type.fromList(<dynamic>[$deser],)',
    type ?? (one ? dartTypes : 'Tuple${sers.length}<$dartTypes>'),
    "IDL.Tuple(<CType<dynamic>>[${idl.join(",")}],)",
  );
}