logstash-core/lib/logstash/compiler/lscl/lscl_grammar.rb [423:735]:
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      r0.extend(PluginSection1)
    else
      @index = i0
      r0 = nil
    end

    node_cache[:plugin_section][start_index] = r0

    r0
  end

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

    i0 = index
    r1 = _nt_branch
    if r1
      r1 = SyntaxNode.new(input, (index-1)...index) if r1 == true
      r0 = r1
    else
      r2 = _nt_plugin
      if r2
        r2 = SyntaxNode.new(input, (index-1)...index) if r2 == true
        r0 = r2
      else
        @index = i0
        r0 = nil
      end
    end

    node_cache[:branch_or_plugin][start_index] = r0

    r0
  end

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

    i0 = index
    if (match_len = has_terminal?("input", false, index))
      r1 = instantiate_node(SyntaxNode,input, index...(index + match_len))
      @index += match_len
    else
      terminal_parse_failure('"input"')
      r1 = nil
    end
    if r1
      r1 = SyntaxNode.new(input, (index-1)...index) if r1 == true
      r0 = r1
    else
      if (match_len = has_terminal?("filter", false, index))
        r2 = instantiate_node(SyntaxNode,input, index...(index + match_len))
        @index += match_len
      else
        terminal_parse_failure('"filter"')
        r2 = nil
      end
      if r2
        r2 = SyntaxNode.new(input, (index-1)...index) if r2 == true
        r0 = r2
      else
        if (match_len = has_terminal?("output", false, index))
          r3 = instantiate_node(SyntaxNode,input, index...(index + match_len))
          @index += match_len
        else
          terminal_parse_failure('"output"')
          r3 = nil
        end
        if r3
          r3 = SyntaxNode.new(input, (index-1)...index) if r3 == true
          r0 = r3
        else
          @index = i0
          r0 = nil
        end
      end
    end

    node_cache[:plugin_type][start_index] = r0

    r0
  end

  module Plugins0
    def cs
      elements[0]
    end

    def plugin
      elements[1]
    end
  end

  module Plugins1
    def plugin
      elements[0]
    end

  end

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

    i1, s1 = index, []
    r2 = _nt_plugin
    s1 << r2
    if r2
      s3, i3 = [], index
      loop do
        i4, s4 = index, []
        r5 = _nt_cs
        s4 << r5
        if r5
          r6 = _nt_plugin
          s4 << r6
        end
        if s4.last
          r4 = instantiate_node(SyntaxNode,input, i4...index, s4)
          r4.extend(Plugins0)
        else
          @index = i4
          r4 = nil
        end
        if r4
          s3 << r4
        else
          break
        end
      end
      r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
      s1 << r3
    end
    if s1.last
      r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
      r1.extend(Plugins1)
    else
      @index = i1
      r1 = nil
    end
    if r1
      r0 = r1
    else
      r0 = instantiate_node(SyntaxNode,input, index...index)
    end

    node_cache[:plugins][start_index] = r0

    r0
  end

  module Plugin0
    def whitespace
      elements[0]
    end

    def cs
      elements[1]
    end

    def attribute
      elements[2]
    end
  end

  module Plugin1
    def attribute
      elements[0]
    end

  end

  module Plugin2
    def name
      elements[0]
    end

    def cs1
      elements[1]
    end

    def cs2
      elements[3]
    end

    def attributes
      elements[4]
    end

    def cs3
      elements[5]
    end

  end

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

    i0, s0 = index, []
    r1 = _nt_name
    s0 << r1
    if r1
      r2 = _nt_cs
      s0 << r2
      if r2
        if (match_len = has_terminal?("{", false, index))
          r3 = true
          @index += match_len
        else
          terminal_parse_failure('"{"')
          r3 = nil
        end
        s0 << r3
        if r3
          r4 = _nt_cs
          s0 << r4
          if r4
            i6, s6 = index, []
            r7 = _nt_attribute
            s6 << r7
            if r7
              s8, i8 = [], index
              loop do
                i9, s9 = index, []
                r10 = _nt_whitespace
                s9 << r10
                if r10
                  r11 = _nt_cs
                  s9 << r11
                  if r11
                    r12 = _nt_attribute
                    s9 << r12
                  end
                end
                if s9.last
                  r9 = instantiate_node(SyntaxNode,input, i9...index, s9)
                  r9.extend(Plugin0)
                else
                  @index = i9
                  r9 = nil
                end
                if r9
                  s8 << r9
                else
                  break
                end
              end
              r8 = instantiate_node(SyntaxNode,input, i8...index, s8)
              s6 << r8
            end
            if s6.last
              r6 = instantiate_node(SyntaxNode,input, i6...index, s6)
              r6.extend(Plugin1)
            else
              @index = i6
              r6 = nil
            end
            if r6
              r5 = r6
            else
              r5 = instantiate_node(SyntaxNode,input, index...index)
            end
            s0 << r5
            if r5
              r13 = _nt_cs
              s0 << r13
              if r13
                if (match_len = has_terminal?("}", false, index))
                  r14 = true
                  @index += match_len
                else
                  terminal_parse_failure('"}"')
                  r14 = nil
                end
                s0 << r14
              end
            end
          end
        end
      end
    end
    if s0.last
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logstash-core/lib/logstash/config/grammar.rb [447:759]:
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      r0.extend(PluginSection1)
    else
      @index = i0
      r0 = nil
    end

    node_cache[:plugin_section][start_index] = r0

    r0
  end

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

    i0 = index
    r1 = _nt_branch
    if r1
      r1 = SyntaxNode.new(input, (index-1)...index) if r1 == true
      r0 = r1
    else
      r2 = _nt_plugin
      if r2
        r2 = SyntaxNode.new(input, (index-1)...index) if r2 == true
        r0 = r2
      else
        @index = i0
        r0 = nil
      end
    end

    node_cache[:branch_or_plugin][start_index] = r0

    r0
  end

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

    i0 = index
    if (match_len = has_terminal?("input", false, index))
      r1 = instantiate_node(SyntaxNode,input, index...(index + match_len))
      @index += match_len
    else
      terminal_parse_failure('"input"')
      r1 = nil
    end
    if r1
      r1 = SyntaxNode.new(input, (index-1)...index) if r1 == true
      r0 = r1
    else
      if (match_len = has_terminal?("filter", false, index))
        r2 = instantiate_node(SyntaxNode,input, index...(index + match_len))
        @index += match_len
      else
        terminal_parse_failure('"filter"')
        r2 = nil
      end
      if r2
        r2 = SyntaxNode.new(input, (index-1)...index) if r2 == true
        r0 = r2
      else
        if (match_len = has_terminal?("output", false, index))
          r3 = instantiate_node(SyntaxNode,input, index...(index + match_len))
          @index += match_len
        else
          terminal_parse_failure('"output"')
          r3 = nil
        end
        if r3
          r3 = SyntaxNode.new(input, (index-1)...index) if r3 == true
          r0 = r3
        else
          @index = i0
          r0 = nil
        end
      end
    end

    node_cache[:plugin_type][start_index] = r0

    r0
  end

  module Plugins0
    def cs
      elements[0]
    end

    def plugin
      elements[1]
    end
  end

  module Plugins1
    def plugin
      elements[0]
    end

  end

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

    i1, s1 = index, []
    r2 = _nt_plugin
    s1 << r2
    if r2
      s3, i3 = [], index
      loop do
        i4, s4 = index, []
        r5 = _nt_cs
        s4 << r5
        if r5
          r6 = _nt_plugin
          s4 << r6
        end
        if s4.last
          r4 = instantiate_node(SyntaxNode,input, i4...index, s4)
          r4.extend(Plugins0)
        else
          @index = i4
          r4 = nil
        end
        if r4
          s3 << r4
        else
          break
        end
      end
      r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
      s1 << r3
    end
    if s1.last
      r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
      r1.extend(Plugins1)
    else
      @index = i1
      r1 = nil
    end
    if r1
      r0 = r1
    else
      r0 = instantiate_node(SyntaxNode,input, index...index)
    end

    node_cache[:plugins][start_index] = r0

    r0
  end

  module Plugin0
    def whitespace
      elements[0]
    end

    def cs
      elements[1]
    end

    def attribute
      elements[2]
    end
  end

  module Plugin1
    def attribute
      elements[0]
    end

  end

  module Plugin2
    def name
      elements[0]
    end

    def cs1
      elements[1]
    end

    def cs2
      elements[3]
    end

    def attributes
      elements[4]
    end

    def cs3
      elements[5]
    end

  end

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

    i0, s0 = index, []
    r1 = _nt_name
    s0 << r1
    if r1
      r2 = _nt_cs
      s0 << r2
      if r2
        if (match_len = has_terminal?("{", false, index))
          r3 = true
          @index += match_len
        else
          terminal_parse_failure('"{"')
          r3 = nil
        end
        s0 << r3
        if r3
          r4 = _nt_cs
          s0 << r4
          if r4
            i6, s6 = index, []
            r7 = _nt_attribute
            s6 << r7
            if r7
              s8, i8 = [], index
              loop do
                i9, s9 = index, []
                r10 = _nt_whitespace
                s9 << r10
                if r10
                  r11 = _nt_cs
                  s9 << r11
                  if r11
                    r12 = _nt_attribute
                    s9 << r12
                  end
                end
                if s9.last
                  r9 = instantiate_node(SyntaxNode,input, i9...index, s9)
                  r9.extend(Plugin0)
                else
                  @index = i9
                  r9 = nil
                end
                if r9
                  s8 << r9
                else
                  break
                end
              end
              r8 = instantiate_node(SyntaxNode,input, i8...index, s8)
              s6 << r8
            end
            if s6.last
              r6 = instantiate_node(SyntaxNode,input, i6...index, s6)
              r6.extend(Plugin1)
            else
              @index = i6
              r6 = nil
            end
            if r6
              r5 = r6
            else
              r5 = instantiate_node(SyntaxNode,input, index...index)
            end
            s0 << r5
            if r5
              r13 = _nt_cs
              s0 << r13
              if r13
                if (match_len = has_terminal?("}", false, index))
                  r14 = true
                  @index += match_len
                else
                  terminal_parse_failure('"}"')
                  r14 = nil
                end
                s0 << r14
              end
            end
          end
        end
      end
    end
    if s0.last
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