module Mail::ContentType

def _nt_attribute
  start_index = index
  if node_cache[:attribute].has_key?(index)
    cached = node_cache[:attribute][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end
  s0, i0 = [], index
  loop do
    r1 = _nt_token
    if r1
      s0 << r1
    else
      break
    end
  end
  if s0.empty?
    @index = i0
    r0 = nil
  else
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
  end
  node_cache[:attribute][start_index] = r0
  r0
end

def _nt_composite_type
  start_index = index
  if node_cache[:composite_type].has_key?(index)
    cached = node_cache[:composite_type][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end
  i0 = index
  i1, s1 = index, []
  if has_terminal?('\G[mM]', true, index)
    r2 = true
    @index += 1
  else
    r2 = nil
  end
  s1 << r2
  if r2
    if has_terminal?('\G[eE]', true, index)
      r3 = true
      @index += 1
    else
      r3 = nil
    end
    s1 << r3
    if r3
      if has_terminal?('\G[sS]', true, index)
        r4 = true
        @index += 1
      else
        r4 = nil
      end
      s1 << r4
      if r4
        if has_terminal?('\G[sS]', true, index)
          r5 = true
          @index += 1
        else
          r5 = nil
        end
        s1 << r5
        if r5
          if has_terminal?('\G[aA]', true, index)
            r6 = true
            @index += 1
          else
            r6 = nil
          end
          s1 << r6
          if r6
            if has_terminal?('\G[gG]', true, index)
              r7 = true
              @index += 1
            else
              r7 = nil
            end
            s1 << r7
            if r7
              if has_terminal?('\G[eE]', true, index)
                r8 = true
                @index += 1
              else
                r8 = nil
              end
              s1 << r8
            end
          end
        end
      end
    end
  end
  if s1.last
    r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
    r1.extend(CompositeType0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    i9, s9 = index, []
    if has_terminal?('\G[mM]', true, index)
      r10 = true
      @index += 1
    else
      r10 = nil
    end
    s9 << r10
    if r10
      if has_terminal?('\G[uU]', true, index)
        r11 = true
        @index += 1
      else
        r11 = nil
      end
      s9 << r11
      if r11
        if has_terminal?('\G[lL]', true, index)
          r12 = true
          @index += 1
        else
          r12 = nil
        end
        s9 << r12
        if r12
          if has_terminal?('\G[tT]', true, index)
            r13 = true
            @index += 1
          else
            r13 = nil
          end
          s9 << r13
          if r13
            if has_terminal?('\G[iI]', true, index)
              r14 = true
              @index += 1
            else
              r14 = nil
            end
            s9 << r14
            if r14
              if has_terminal?('\G[pP]', true, index)
                r15 = true
                @index += 1
              else
                r15 = nil
              end
              s9 << r15
              if r15
                if has_terminal?('\G[aA]', true, index)
                  r16 = true
                  @index += 1
                else
                  r16 = nil
                end
                s9 << r16
                if r16
                  if has_terminal?('\G[rR]', true, index)
                    r17 = true
                    @index += 1
                  else
                    r17 = nil
                  end
                  s9 << r17
                  if r17
                    if has_terminal?('\G[tT]', true, index)
                      r18 = true
                      @index += 1
                    else
                      r18 = nil
                    end
                    s9 << r18
                  end
                end
              end
            end
          end
        end
      end
    end
    if s9.last
      r9 = instantiate_node(SyntaxNode,input, i9...index, s9)
      r9.extend(CompositeType1)
    else
      @index = i9
      r9 = nil
    end
    if r9
      r0 = r9
    else
      r19 = _nt_extension_token
      if r19
        r0 = r19
      else
        @index = i0
        r0 = nil
      end
    end
  end
  node_cache[:composite_type][start_index] = r0
  r0
end

def _nt_content_type
  start_index = index
  if node_cache[:content_type].has_key?(index)
    cached = node_cache[:content_type][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end
  i0, s0 = index, []
  r1 = _nt_main_type
  s0 << r1
  if r1
    if has_terminal?("/", false, index)
      r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
      @index += 1
    else
      terminal_parse_failure("/")
      r2 = nil
    end
    s0 << r2
    if r2
      r3 = _nt_sub_type
      s0 << r3
      if r3
        s4, i4 = [], index
        loop do
          i5, s5 = index, []
          r6 = _nt_CFWS
          s5 << r6
          if r6
            if has_terminal?(";", false, index)
              r8 = instantiate_node(SyntaxNode,input, index...(index + 1))
              @index += 1
            else
              terminal_parse_failure(";")
              r8 = nil
            end
            if r8
              r7 = r8
            else
              r7 = instantiate_node(SyntaxNode,input, index...index)
            end
            s5 << r7
            if r7
              r9 = _nt_parameter
              s5 << r9
              if r9
                r10 = _nt_CFWS
                s5 << r10
              end
            end
          end
          if s5.last
            r5 = instantiate_node(SyntaxNode,input, i5...index, s5)
            r5.extend(ContentType0)
          else
            @index = i5
            r5 = nil
          end
          if r5
            s4 << r5
          else
            break
          end
        end
        r4 = instantiate_node(SyntaxNode,input, i4...index, s4)
        s0 << r4
      end
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(ContentType1)
    r0.extend(ContentType2)
  else
    @index = i0
    r0 = nil
  end
  node_cache[:content_type][start_index] = r0
  r0
end

def _nt_discrete_type
  start_index = index
  if node_cache[:discrete_type].has_key?(index)
    cached = node_cache[:discrete_type][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end
  i0 = index
  i1, s1 = index, []
  if has_terminal?('\G[tT]', true, index)
    r2 = true
    @index += 1
  else
    r2 = nil
  end
  s1 << r2
  if r2
    if has_terminal?('\G[eE]', true, index)
      r3 = true
      @index += 1
    else
      r3 = nil
    end
    s1 << r3
    if r3
      if has_terminal?('\G[xX]', true, index)
        r4 = true
        @index += 1
      else
        r4 = nil
      end
      s1 << r4
      if r4
        if has_terminal?('\G[tT]', true, index)
          r5 = true
          @index += 1
        else
          r5 = nil
        end
        s1 << r5
      end
    end
  end
  if s1.last
    r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
    r1.extend(DiscreteType0)
  else
    @index = i1
    r1 = nil
  end
  if r1
    r0 = r1
  else
    i6, s6 = index, []
    if has_terminal?('\G[iI]', true, index)
      r7 = true
      @index += 1
    else
      r7 = nil
    end
    s6 << r7
    if r7
      if has_terminal?('\G[mM]', true, index)
        r8 = true
        @index += 1
      else
        r8 = nil
      end
      s6 << r8
      if r8
        if has_terminal?('\G[aA]', true, index)
          r9 = true
          @index += 1
        else
          r9 = nil
        end
        s6 << r9
        if r9
          if has_terminal?('\G[gG]', true, index)
            r10 = true
            @index += 1
          else
            r10 = nil
          end
          s6 << r10
          if r10
            if has_terminal?('\G[eE]', true, index)
              r11 = true
              @index += 1
            else
              r11 = nil
            end
            s6 << r11
          end
        end
      end
    end
    if s6.last
      r6 = instantiate_node(SyntaxNode,input, i6...index, s6)
      r6.extend(DiscreteType1)
    else
      @index = i6
      r6 = nil
    end
    if r6
      r0 = r6
    else
      i12, s12 = index, []
      if has_terminal?('\G[aA]', true, index)
        r13 = true
        @index += 1
      else
        r13 = nil
      end
      s12 << r13
      if r13
        if has_terminal?('\G[uU]', true, index)
          r14 = true
          @index += 1
        else
          r14 = nil
        end
        s12 << r14
        if r14
          if has_terminal?('\G[dD]', true, index)
            r15 = true
            @index += 1
          else
            r15 = nil
          end
          s12 << r15
          if r15
            if has_terminal?('\G[iI]', true, index)
              r16 = true
              @index += 1
            else
              r16 = nil
            end
            s12 << r16
            if r16
              if has_terminal?('\G[oO]', true, index)
                r17 = true
                @index += 1
              else
                r17 = nil
              end
              s12 << r17
            end
          end
        end
      end
      if s12.last
        r12 = instantiate_node(SyntaxNode,input, i12...index, s12)
        r12.extend(DiscreteType2)
      else
        @index = i12
        r12 = nil
      end
      if r12
        r0 = r12
      else
        i18, s18 = index, []
        if has_terminal?('\G[vV]', true, index)
          r19 = true
          @index += 1
        else
          r19 = nil
        end
        s18 << r19
        if r19
          if has_terminal?('\G[iI]', true, index)
            r20 = true
            @index += 1
          else
            r20 = nil
          end
          s18 << r20
          if r20
            if has_terminal?('\G[dD]', true, index)
              r21 = true
              @index += 1
            else
              r21 = nil
            end
            s18 << r21
            if r21
              if has_terminal?('\G[eE]', true, index)
                r22 = true
                @index += 1
              else
                r22 = nil
              end
              s18 << r22
              if r22
                if has_terminal?('\G[oO]', true, index)
                  r23 = true
                  @index += 1
                else
                  r23 = nil
                end
                s18 << r23
              end
            end
          end
        end
        if s18.last
          r18 = instantiate_node(SyntaxNode,input, i18...index, s18)
          r18.extend(DiscreteType3)
        else
          @index = i18
          r18 = nil
        end
        if r18
          r0 = r18
        else
          i24, s24 = index, []
          if has_terminal?('\G[aA]', true, index)
            r25 = true
            @index += 1
          else
            r25 = nil
          end
          s24 << r25
          if r25
            if has_terminal?('\G[pP]', true, index)
              r26 = true
              @index += 1
            else
              r26 = nil
            end
            s24 << r26
            if r26
              if has_terminal?('\G[pP]', true, index)
                r27 = true
                @index += 1
              else
                r27 = nil
              end
              s24 << r27
              if r27
                if has_terminal?('\G[lL]', true, index)
                  r28 = true
                  @index += 1
                else
                  r28 = nil
                end
                s24 << r28
                if r28
                  if has_terminal?('\G[iI]', true, index)
                    r29 = true
                    @index += 1
                  else
                    r29 = nil
                  end
                  s24 << r29
                  if r29
                    if has_terminal?('\G[cC]', true, index)
                      r30 = true
                      @index += 1
                    else
                      r30 = nil
                    end
                    s24 << r30
                    if r30
                      if has_terminal?('\G[aA]', true, index)
                        r31 = true
                        @index += 1
                      else
                        r31 = nil
                      end
                      s24 << r31
                      if r31
                        if has_terminal?('\G[tT]', true, index)
                          r32 = true
                          @index += 1
                        else
                          r32 = nil
                        end
                        s24 << r32
                        if r32
                          if has_terminal?('\G[iI]', true, index)
                            r33 = true
                            @index += 1
                          else
                            r33 = nil
                          end
                          s24 << r33
                          if r33
                            if has_terminal?('\G[oO]', true, index)
                              r34 = true
                              @index += 1
                            else
                              r34 = nil
                            end
                            s24 << r34
                            if r34
                              if has_terminal?('\G[nN]', true, index)
                                r35 = true
                                @index += 1
                              else
                                r35 = nil
                              end
                              s24 << r35
                            end
                          end
                        end
                      end
                    end
                  end
                end
              end
            end
          end
          if s24.last
            r24 = instantiate_node(SyntaxNode,input, i24...index, s24)
            r24.extend(DiscreteType4)
          else
            @index = i24
            r24 = nil
          end
          if r24
            r0 = r24
          else
            r36 = _nt_extension_token
            if r36
              r0 = r36
            else
              @index = i0
              r0 = nil
            end
          end
        end
      end
    end
  end
  node_cache[:discrete_type][start_index] = r0
  r0
end

def _nt_extension_token
  start_index = index
  if node_cache[:extension_token].has_key?(index)
    cached = node_cache[:extension_token][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end
  i0 = index
  r1 = _nt_ietf_token
  if r1
    r0 = r1
  else
    r2 = _nt_custom_x_token
    if r2
      r0 = r2
    else
      @index = i0
      r0 = nil
    end
  end
  node_cache[:extension_token][start_index] = r0
  r0
end

def _nt_main_type
  start_index = index
  if node_cache[:main_type].has_key?(index)
    cached = node_cache[:main_type][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end
  i0 = index
  r1 = _nt_discrete_type
  if r1
    r0 = r1
  else
    r2 = _nt_composite_type
    if r2
      r0 = r2
    else
      @index = i0
      r0 = nil
    end
  end
  node_cache[:main_type][start_index] = r0
  r0
end

def _nt_parameter
  start_index = index
  if node_cache[:parameter].has_key?(index)
    cached = node_cache[:parameter][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end
  i0, s0 = index, []
  r2 = _nt_CFWS
  if r2
    r1 = r2
  else
    r1 = instantiate_node(SyntaxNode,input, index...index)
  end
  s0 << r1
  if r1
    r3 = _nt_attribute
    s0 << r3
    if r3
      if has_terminal?("=", false, index)
        r4 = instantiate_node(SyntaxNode,input, index...(index + 1))
        @index += 1
      else
        terminal_parse_failure("=")
        r4 = nil
      end
      s0 << r4
      if r4
        r5 = _nt_value
        s0 << r5
        if r5
          r7 = _nt_CFWS
          if r7
            r6 = r7
          else
            r6 = instantiate_node(SyntaxNode,input, index...index)
          end
          s0 << r6
        end
      end
    end
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(Parameter0)
    r0.extend(Parameter1)
  else
    @index = i0
    r0 = nil
  end
  node_cache[:parameter][start_index] = r0
  r0
end

def _nt_sub_type
  start_index = index
  if node_cache[:sub_type].has_key?(index)
    cached = node_cache[:sub_type][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end
  i0 = index
  r1 = _nt_extension_token
  if r1
    r0 = r1
  else
    r2 = _nt_iana_token
    if r2
      r0 = r2
    else
      @index = i0
      r0 = nil
    end
  end
  node_cache[:sub_type][start_index] = r0
  r0
end

def _nt_value
  start_index = index
  if node_cache[:value].has_key?(index)
    cached = node_cache[:value][index]
    if cached
      cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
      @index = cached.interval.end
    end
    return cached
  end
  i0 = index
  r1 = _nt_quoted_string
  r1.extend(Value0)
  if r1
    r0 = r1
  else
    s2, i2 = [], index
    loop do
      i3 = index
      r4 = _nt_token
      if r4
        r3 = r4
      else
        if has_terminal?('\G[\\x3d]', true, index)
          r5 = true
          @index += 1
        else
          r5 = nil
        end
        if r5
          r3 = r5
        else
          @index = i3
          r3 = nil
        end
      end
      if r3
        s2 << r3
      else
        break
      end
    end
    if s2.empty?
      @index = i2
      r2 = nil
    else
      r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
    end
    if r2
      r0 = r2
    else
      @index = i0
      r0 = nil
    end
  end
  node_cache[:value][start_index] = r0
  r0
end

def root
  @root ||= :content_type
end