SourceSpan union()

in lib/src/file.dart [371:387]

• 14 lines of code
• 7 McCabe index (conditional complexity)

  SourceSpan union(SourceSpan other) {
    if (other is! FileSpan) return super.union(other);

    final span = expand(other);

    if (other is _FileSpan) {
      if (_start > other._end || other._start > _end) {
        throw ArgumentError('Spans $this and $other are disjoint.');
      }
    } else {
      if (_start > other.end.offset || other.start.offset > _end) {
        throw ArgumentError('Spans $this and $other are disjoint.');
      }
    }

    return span;
  }