class RuboCop::Cop::Layout::ExtraSpacing

def investigate(processed_source)
  return if processed_source.ast.nil?
  if force_equal_sign_alignment?
    @asgn_tokens = assignment_tokens
    @asgn_lines  = @asgn_tokens.map { |t| t.pos.line }
    # Don't attempt to correct the same = more than once
    @corrected   = Set.new
  end
  processed_source.tokens.each_cons(2) do |t1, t2|
    check_tokens(processed_source.ast, t1, t2)
  end
end