_nt_comment

in logstash-core/lib/logstash/config/grammar.rb [193:271]

• 75 lines of code
• 15 McCabe index (conditional complexity)

  def _nt_comment
    start_index = index
    if node_cache[:comment].has_key?(index)
      cached = node_cache[:comment][index]
      if cached
        node_cache[:comment][index] = cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
        @index = cached.interval.end
      end
      return cached
    end

    s0, i0 = [], index
    loop do
      i1, s1 = index, []
      r3 = _nt_whitespace
      if r3
        r2 = r3
      else
        r2 = instantiate_node(SyntaxNode,input, index...index)
      end
      s1 << r2
      if r2
        if (match_len = has_terminal?("#", false, index))
          r4 = true
          @index += match_len
        else
          terminal_parse_failure('"#"')
          r4 = nil
        end
        s1 << r4
        if r4
          s5, i5 = [], index
          loop do
            if has_terminal?(@regexps[gr = '\A[^\\r\\n]'] ||= Regexp.new(gr), :regexp, index)
              r6 = true
              @index += 1
            else
              terminal_parse_failure('[^\\r\\n]')
              r6 = nil
            end
            if r6
              s5 << r6
            else
              break
            end
          end
          r5 = instantiate_node(SyntaxNode,input, i5...index, s5)
          s1 << r5
          if r5
            r7 = _nt_newline_or_eoi
            s1 << r7
          end
        end
      end
      if s1.last
        r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
        r1.extend(Comment0)
      else
        @index = i1
        r1 = nil
      end
      if r1
        s0 << r1
      else
        break
      end
    end
    if s0.empty?
      @index = i0
      r0 = nil
    else
      r0 = instantiate_node(LogStash::Config::AST::Comment,input, i0...index, s0)
    end

    node_cache[:comment][start_index] = r0

    r0
  end