# File lib/treetop/compiler/metagrammar.rb, line 3134
      def _nt_keyword_inside_grammar
        start_index = index
        if node_cache[:keyword_inside_grammar].has_key?(index)
          cached = node_cache[:keyword_inside_grammar][index]
          if cached
            cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
            @index = cached.interval.end
          end
          return cached
        end

        i0, s0 = index, []
        i1 = index
        if has_terminal?('rule', false, index)
          r2 = instantiate_node(SyntaxNode,input, index...(index + 4))
          @index += 4
        else
          terminal_parse_failure('rule')
          r2 = nil
        end
        if r2
          r1 = r2
        else
          if has_terminal?('end', false, index)
            r3 = instantiate_node(SyntaxNode,input, index...(index + 3))
            @index += 3
          else
            terminal_parse_failure('end')
            r3 = nil
          end
          if r3
            r1 = r3
          else
            @index = i1
            r1 = nil
          end
        end
        s0 << r1
        if r1
          i4 = index
          r5 = _nt_non_space_char
          if r5
            r4 = nil
          else
            @index = i4
            r4 = instantiate_node(SyntaxNode,input, index...index)
          end
          s0 << r4
        end
        if s0.last
          r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
          r0.extend(KeywordInsideGrammar0)
        else
          @index = i0
          r0 = nil
        end

        node_cache[:keyword_inside_grammar][start_index] = r0

        r0
      end