small refactor on arg loading

lib/register/instructions/branch.rb

@@ -10,7 +10,7 @@ module Register
     attr_reader :label
 
     def to_s
-      "#{self.class.name}: #{label ? label.name : ''}"
+      "#{self.class.name.split("::").last}: #{label ? label.name : ''}"
     end
     alias :inspect :to_s
 

lib/register/instructions/getter.rb

@@ -30,7 +30,7 @@ module Register
     attr_accessor :array , :index , :register
 
     def to_s
-      "#{self.class.name}: #{array}[#{index}] -> #{register}"
+      "#{self.class.name.split("::").last}: #{array}[#{index}] -> #{register}"
     end
 
   end

lib/register/instructions/label.rb

@@ -15,7 +15,7 @@ module Register
     attr_reader :name
 
     def to_s
-      "Label: #{@name} (#{self.next.class})"
+      "Label: #{@name} (#{self.next.class.name.split("::").last})"
     end
     def sof_reference_name
       @name

lib/register/instructions/setter.rb

@@ -28,7 +28,7 @@ module Register
     attr_accessor :register , :array , :index
 
     def to_s
-      "#{self.class.name}: #{register} -> #{array}[#{index}]"
+      "#{self.class.name.split("::").last}: #{register} -> #{array}[#{index}]"
     end
 
   end