module Mail::ContentDisposition

def _nt_attribute
  start_index = index
  if node_cache[:attribute].has_key?(index)
    cached = node_cache[:attribute][index]
    @index = cached.interval.end if cached
    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_content_disposition
  start_index = index
  if node_cache[:content_disposition].has_key?(index)
    cached = node_cache[:content_disposition][index]
    @index = cached.interval.end if cached
    return cached
  end
  i0, s0 = index, []
  r1 = _nt_disposition_type
  s0 << r1
  if r1
    s2, i2 = [], index
    loop do
      i3, s3 = index, []
      r4 = _nt_CFWS
      s3 << r4
      if r4
        if has_terminal?(";", false, index)
          r5 = instantiate_node(SyntaxNode,input, index...(index + 1))
          @index += 1
        else
          terminal_parse_failure(";")
          r5 = nil
        end
        s3 << r5
        if r5
          r6 = _nt_parameter
          s3 << r6
          if r6
            r7 = _nt_CFWS
            s3 << r7
          end
        end
      end
      if s3.last
        r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
        r3.extend(ContentDisposition0)
      else
        @index = i3
        r3 = nil
      end
      if r3
        s2 << r3
      else
        break
      end
    end
    r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
    s0 << r2
  end
  if s0.last
    r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
    r0.extend(ContentDisposition1)
    r0.extend(ContentDisposition2)
  else
    @index = i0
    r0 = nil
  end
  node_cache[:content_disposition][start_index] = r0
  r0
end

def _nt_disposition_type
  start_index = index
  if node_cache[:disposition_type].has_key?(index)
    cached = node_cache[:disposition_type][index]
    @index = cached.interval.end if cached
    return cached
  end
  i0 = index
  if has_terminal?("inline", false, index)
    r1 = instantiate_node(SyntaxNode,input, index...(index + 6))
    @index += 6
  else
    terminal_parse_failure("inline")
    r1 = nil
  end
  if r1
    r0 = r1
  else
    if has_terminal?("attachment", false, index)
      r2 = instantiate_node(SyntaxNode,input, index...(index + 10))
      @index += 10
    else
      terminal_parse_failure("attachment")
      r2 = nil
    end
    if r2
      r0 = r2
    else
      r3 = _nt_extension_token
      if r3
        r0 = r3
      else
        if has_terminal?('', false, index)
          r4 = instantiate_node(SyntaxNode,input, index...(index + 0))
          @index += 0
        else
          terminal_parse_failure('')
          r4 = nil
        end
        if r4
          r0 = r4
        else
          @index = i0
          r0 = nil
        end
      end
    end
  end
  node_cache[:disposition_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]
    @index = cached.interval.end if cached
    return cached
  end
  i0 = index
  r1 = _nt_ietf_token
  if r1
    r0 = r1
  else
    r2 = _nt_x_token
    if r2
      r0 = r2
    else
      @index = i0
      r0 = nil
    end
  end
  node_cache[:extension_token][start_index] = r0
  r0
end

def _nt_parameter
  start_index = index
  if node_cache[:parameter].has_key?(index)
    cached = node_cache[:parameter][index]
    @index = cached.interval.end if cached
    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_value
  start_index = index
  if node_cache[:value].has_key?(index)
    cached = node_cache[:value][index]
    @index = cached.interval.end if cached
    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_disposition
end