# File lib/cucumber/parser/feature.rb, line 1363
      def _nt_lines_to_keyword
        start_index = index
        if node_cache[:lines_to_keyword].has_key?(index)
          cached = node_cache[:lines_to_keyword][index]
          @index = cached.interval.end if cached
          return cached
        end

        s0, i0 = [], index
        loop do
          i1, s1 = index, []
          i2 = index
          i3, s3 = index, []
          r4 = _nt_eol
          s3 << r4
          if r4
            s5, i5 = [], index
            loop do
              r6 = _nt_space
              if r6
                s5 << r6
              else
                break
              end
            end
            r5 = instantiate_node(SyntaxNode,input, i5...index, s5)
            s3 << r5
            if r5
              r7 = _nt_reserved_words_and_symbols
              s3 << r7
            end
          end
          if s3.last
            r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
            r3.extend(LinesToKeyword0)
          else
            @index = i3
            r3 = nil
          end
          if r3
            r2 = nil
          else
            @index = i2
            r2 = instantiate_node(SyntaxNode,input, index...index)
          end
          s1 << r2
          if r2
            if index < input_length
              r8 = instantiate_node(SyntaxNode,input, index...(index + 1))
              @index += 1
            else
              terminal_parse_failure("any character")
              r8 = nil
            end
            s1 << r8
          end
          if s1.last
            r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
            r1.extend(LinesToKeyword1)
          else
            @index = i1
            r1 = nil
          end
          if r1
            s0 << r1
          else
            break
          end
        end
        r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
        r0.extend(LinesToKeyword2)

        node_cache[:lines_to_keyword][start_index] = r0

        r0
      end