Mail::MessageIds

    # File lib/mail/parsers/message_ids.rb, line 20
20:     def _nt_primary
21:       start_index = index
22:       if node_cache[:primary].has_key?(index)
23:         cached = node_cache[:primary][index]
24:         if cached
25:           cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
26:           @index = cached.interval.end
27:         end
28:         return cached
29:       end
30: 
31:       r0 = _nt_message_ids
32:       r0.extend(Primary0)
33: 
34:       node_cache[:primary][start_index] = r0
35: 
36:       r0
37:     end

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