class RuboCop::AST::NodePattern::Compiler::SequenceSubcompiler

def handle_prev 

def handle_prev
  @prev_index = @cur_index
  @prev_index_used = false
  code = yield
  if @prev_index_used
    @prev_index_used = false
    code = "(#{@prev_index_var} = #{@cur_index_var}; true) && #{code}"
  end
  code
end