module RuboCop::Cop::Util

def source_range(source_buffer, line_number, column, length = 1)
  if column.is_a?(Range)
    column_index = column.begin
    length = numeric_range_size(column)
  else
    column_index = column
  end
  line_begin_pos = if line_number == 0
                     0
                   else
                     source_buffer.line_range(line_number).begin_pos
                   end
  begin_pos = line_begin_pos + column_index
  end_pos = begin_pos + length
  Parser::Source::Range.new(source_buffer, begin_pos, end_pos)
end