lib/support/tuple.rb in trafficbroker-mandy-0.1.6 vs lib/support/tuple.rb in trafficbroker-mandy-0.1.7

@@ -3,27 +3,38 @@
     
     SEPERATOR = ',' unless defined?(SEPERATOR)
     
     attr_accessor :name, :value
     
-    def initialize(name, value)
+    def initialize(name, value, name_accessor = nil, value_accessor = nil)
       @name, @value = name, value
+      alias_accessor(name_accessor, :name) unless name_accessor.nil?
+      alias_accessor(value_accessor, :value) unless value_accessor.nil?
     end
     
     def to_s
       %(#{@name}#{SEPERATOR}#{@value})
     end
     
     def self.from_s(str)
-      new(*str.split(SEPERATOR))
+      parts = str.split(SEPERATOR)
+      raise "Can't create tuple from #{str.inspect}. Format should be 'A#{SEPERATOR}B'" unless parts.size==2
+      new(*parts)
     end
     
     def inspect
       %(<Tuple #{self.to_s}>)
     end
     
     def ==(other)
       return false unless self.class == other.class
       self.name == other.name && self.value == other.value
+    end
+    
+    private
+    
+    def alias_accessor(new_accessor, old_accessor)
+      self.class.send(:alias_method, new_accessor, old_accessor)
+      self.class.send(:alias_method, :"#{new_accessor}=", :"#{old_accessor}=")
     end
   end
 end
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