segment.rb in tcd_x12-1.6.3

- old
+ new

@@ -1,11 +1,16 @@
 module X12
 
   # Implements a segment containing fields or composites
   class Segment < Base
+    attr_accessor :fields
+
     # Parses this segment out of a string, puts the match into value,
     # returns the rest of the string - nil if cannot parse.
+    #
+    # @param str [String]
+    # @return [nil]
     def parse(str)
       s = str
       # puts "Parsing segment #{name} from #{s} with regexp [#{regexp.source}]"
       m = regexp.match(s)
       # puts "Matched #{m ? m[0] : 'nothing'}"
@@ -36,11 +41,11 @@
       }
     end
 
     # Returns a regexp that matches this particular segment.
     def regexp
-      unless @regexp
+      unless defined? @regexp
         if self.nodes.find { |i| i.type =~ /^".+"$/ }
           # It's a very special regexp if there are constant fields
           re_str = self.nodes.inject("^#{name}#{Regexp.escape(field_separator)}") { |s, i|
             field_re = i.simple_regexp(field_separator, segment_separator) + Regexp.escape(field_separator) + '?'
             field_re = "(#{field_re})?" unless i.required
@@ -66,10 +71,10 @@
       }
       return EMPTY if field_num.nil?
       # puts field_num
 
       # Parse the segment if not parsed already
-      unless @fields
+      unless defined? @fields
         @fields = self.to_s.chop.split(Regexp.new(Regexp.escape(field_separator)))
         self.nodes.each_index { |i| self.nodes[i].content = @fields[i + 1] }
       end
       # puts self.nodes[field_num].inspect
       return self.nodes[field_num]