eval_input

in hbase-shell/src/main/ruby/irb/hirb.rb [65:172]
98 lines of code
31 McCabe index (conditional complexity)

    def eval_input
      exc = nil

      @scanner.set_prompt do
        |ltype, indent, continue, line_no|
        if ltype
          f = @context.prompt_s
        elsif continue
          f = @context.prompt_c
        elsif indent > 0
          f = @context.prompt_n
        else
          f = @context.prompt_i
        end
        f = "" unless f
        if @context.prompting?
          @context.io.prompt = p = prompt(f, ltype, indent, line_no)
        else
          @context.io.prompt = p = ""
        end
        if @context.auto_indent_mode and !@context.io.respond_to?(:auto_indent)
          unless ltype
            prompt_i = @context.prompt_i.nil? ? "" : @context.prompt_i
            ind = prompt(prompt_i, ltype, indent, line_no)[/.*\z/].size +
              indent * 2 - p.size
            ind += 2 if continue
            @context.io.prompt = p + " " * ind if ind > 0
          end
        end
        @context.io.prompt
      end

      @scanner.set_input(@context.io, context: @context) do
        signal_status(:IN_INPUT) do
          if l = @context.io.gets
            print l if @context.verbose?
          else
            if @context.ignore_eof? and @context.io.readable_after_eof?
              l = "\n"
              if @context.verbose?
                printf "Use \"exit\" to leave %s\n", @context.ap_name
              end
            else
              print "\n" if @context.prompting?
            end
          end
          l
        end
      end

      @scanner.set_auto_indent(@context) if @context.auto_indent_mode

      @scanner.each_top_level_statement do |line, line_no|
        signal_status(:IN_EVAL) do
          begin
            line.untaint if RUBY_VERSION < '2.7'
            if IRB.conf[:MEASURE] && IRB.conf[:MEASURE_CALLBACKS].empty?
              IRB.set_measure_callback
            end
            if IRB.conf[:MEASURE] && !IRB.conf[:MEASURE_CALLBACKS].empty?
              result = nil
              last_proc = proc{ result = @context.evaluate(line, line_no, exception: exc) }
              IRB.conf[:MEASURE_CALLBACKS].inject(last_proc) { |chain, item|
                _name, callback, arg = item
                proc {
                  callback.(@context, line, line_no, arg, exception: exc) do
                    chain.call
                  end
                }
              }.call
              @context.set_last_value(result)
            else
              @context.evaluate(line, line_no, exception: exc)
            end
            if @context.echo?
              if assignment_expression?(line)
                if @context.echo_on_assignment?
                  output_value(@context.echo_on_assignment? == :truncate)
                end
              else
                output_value
              end
            end
          rescue Interrupt => exc
          rescue SystemExit, SignalException
            raise
          rescue SyntaxError => exc
            
            raise exc unless @interactive
          rescue NameError => exc
            raise exc unless @interactive
            
          rescue Exception => exc
            
            
            
            raise exc
          else
            exc = nil
            next
          end
          handle_exception(exc)
          @context.workspace.local_variable_set(:_, exc)
          exc = nil
        end
      end
    end