Object Morphinism by Changing Attachments

∟Object Morphinism by Changing Attachments

This section describes how to provide object morphinism by changing appended objects.

Object morphinism can be supported by changing append objects as shown in the example below:

$class egg: {...};
$class larva: {...};
$class pupa: {...};
$class butterfly: {...}; 

$class pieridae: {
   $instance x: {
      x.stage = "egg";
      $method x._first(): {
	     $append x $with egg();
	  };
	  $method x.hatch(): {
	     $trim x;
		 $append x $with larva();
	  };
	  $method x.cocoon(): {
	     $trim x;
		 $append x $with pupa();
	  };
	  $method x.transform(): {
	     $trim x;
		 $append x $with butterfly();
	  };
	  $method x.layEggs(): {...};
   };
};

# life of a pieridae starts with an egg
life = pieridae();

# the egg hatches into a larva under the right condition
life.hatch();

# the larva eats and builds a cocoon to becomes a pupa 
life.cocoon();

# the pupa transforms into a butterfly
life.transform();

# the butterfly lays more eggs
life.layEggs();