tuple static method

BcsType<List, List> tuple(List<BcsType> types, [ BcsTypeOptions<List, List>? options ])

Implementation

static BcsType<List, List> tuple(
  List<BcsType> types,
  [BcsTypeOptions<List, List>? options]
) {
  return BcsType<List, List>(
    name: '(${types.map((t) => t.name).join(', ')})',
    serializedSize: (values, {BcsWriterOptions? options}) {
      int total = 0;
      for (int i = 0; i < types.length; i++) {
        final size = types[i].serializedSize(values[i]);
        if (size == null) {
          return null;
        }
        total += size;
      }
      return total;
    },
    read: (reader) {
      final result = [];
      for (final type in types) {
        result.add(type.read(reader));
      }
      return result;
    },
    write: (value, writer) {
      for (int i = 0; i < types.length; i++) {
        types[i].write(value[i], writer);
      }
    },
    validate: (value) {
      options?.validate?.call(value);
      if (value.length != types.length) {
        throw ArgumentError('Expected List of length ${types.length}, found ${value.length}');
      }
    },
  );
}