class RuboCop::Cop::Layout::SpaceInsideBlockBraces

def autocorrect(range)
  lambda do |corrector|
    case range.source
    when /\s/ then corrector.remove(range)
    when '{}' then corrector.replace(range, '{ }')
    when '{|' then corrector.replace(range, '{ |')
    else           corrector.insert_before(range, ' ')
    end
  end
end