Mail::DateTime

     # File lib/mail/parsers/date_time.rb, line 36
 36:     def _nt_primary
 37:       start_index = index
 38:       if node_cache[:primary].has_key?(index)
 39:         cached = node_cache[:primary][index]
 40:         if cached
 41:           cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
 42:           @index = cached.interval.end
 43:         end
 44:         return cached
 45:       end
 46: 
 47:       i0, s0 = index, []
 48:       i2, s2 = index, []
 49:       r3 = _nt_day_of_week
 50:       s2 << r3
 51:       if r3
 52:         if has_terminal?(",", false, index)
 53:           r4 = instantiate_node(SyntaxNode,input, index...(index + 1))
 54:           @index += 1
 55:         else
 56:           terminal_parse_failure(",")
 57:           r4 = nil
 58:         end
 59:         s2 << r4
 60:       end
 61:       if s2.last
 62:         r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
 63:         r2.extend(Primary0)
 64:       else
 65:         @index = i2
 66:         r2 = nil
 67:       end
 68:       if r2
 69:         r1 = r2
 70:       else
 71:         r1 = instantiate_node(SyntaxNode,input, index...index)
 72:       end
 73:       s0 << r1
 74:       if r1
 75:         r5 = _nt_date
 76:         s0 << r5
 77:         if r5
 78:           r6 = _nt_FWS
 79:           s0 << r6
 80:           if r6
 81:             r7 = _nt_time
 82:             s0 << r7
 83:             if r7
 84:               r9 = _nt_CFWS
 85:               if r9
 86:                 r8 = r9
 87:               else
 88:                 r8 = instantiate_node(SyntaxNode,input, index...index)
 89:               end
 90:               s0 << r8
 91:             end
 92:           end
 93:         end
 94:       end
 95:       if s0.last
 96:         r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
 97:         r0.extend(Primary1)
 98:       else
 99:         @index = i0
100:         r0 = nil
101:       end
102: 
103:       node_cache[:primary][start_index] = r0
104: 
105:       r0
106:     end

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