logstash-core/lib/logstash/compiler/lscl/lscl_grammar.rb [1657:1726]:
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      r0.extend(Array2)
    else
      @index = i0
      r0 = nil
    end

    node_cache[:array][start_index] = r0

    r0
  end

  module Hash0
    def cs1
      elements[1]
    end

    def cs2
      elements[3]
    end

  end

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

    i0, s0 = index, []
    if (match_len = has_terminal?("{", false, index))
      r1 = true
      @index += match_len
    else
      terminal_parse_failure('"{"')
      r1 = nil
    end
    s0 << r1
    if r1
      r2 = _nt_cs
      s0 << r2
      if r2
        r4 = _nt_hashentries
        if r4
          r3 = r4
        else
          r3 = instantiate_node(SyntaxNode,input, index...index)
        end
        s0 << r3
        if r3
          r5 = _nt_cs
          s0 << r5
          if r5
            if (match_len = has_terminal?("}", false, index))
              r6 = true
              @index += match_len
            else
              terminal_parse_failure('"}"')
              r6 = nil
            end
            s0 << r6
          end
        end
      end
    end
    if s0.last
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logstash-core/lib/logstash/config/grammar.rb [1681:1750]:
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      r0.extend(Array2)
    else
      @index = i0
      r0 = nil
    end

    node_cache[:array][start_index] = r0

    r0
  end

  module Hash0
    def cs1
      elements[1]
    end

    def cs2
      elements[3]
    end

  end

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

    i0, s0 = index, []
    if (match_len = has_terminal?("{", false, index))
      r1 = true
      @index += match_len
    else
      terminal_parse_failure('"{"')
      r1 = nil
    end
    s0 << r1
    if r1
      r2 = _nt_cs
      s0 << r2
      if r2
        r4 = _nt_hashentries
        if r4
          r3 = r4
        else
          r3 = instantiate_node(SyntaxNode,input, index...index)
        end
        s0 << r3
        if r3
          r5 = _nt_cs
          s0 << r5
          if r5
            if (match_len = has_terminal?("}", false, index))
              r6 = true
              @index += match_len
            else
              terminal_parse_failure('"}"')
              r6 = nil
            end
            s0 << r6
          end
        end
      end
    end
    if s0.last
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