Mail::Received

    # File lib/mail/parsers/received.rb, line 24
24:     def _nt_primary
25:       start_index = index
26:       if node_cache[:primary].has_key?(index)
27:         cached = node_cache[:primary][index]
28:         if cached
29:           cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
30:           @index = cached.interval.end
31:         end
32:         return cached
33:       end
34: 
35:       i0, s0 = index, []
36:       r1 = _nt_name_val_list
37:       s0 << r1
38:       if r1
39:         if has_terminal?(";", false, index)
40:           r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
41:           @index += 1
42:         else
43:           terminal_parse_failure(";")
44:           r2 = nil
45:         end
46:         s0 << r2
47:         if r2
48:           r3 = _nt_date_time
49:           s0 << r3
50:         end
51:       end
52:       if s0.last
53:         r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
54:         r0.extend(Primary0)
55:       else
56:         @index = i0
57:         r0 = nil
58:       end
59: 
60:       node_cache[:primary][start_index] = r0
61: 
62:       r0
63:     end

    # File lib/mail/parsers/received.rb, line 8
 8:     def root
 9:       @root ||= :primary
10:     end