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Posted By

unkiwii on 02/04/12


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object as3 builder


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Object Builder

 / Published in: ActionScript 3
 

URL: https://github.com/unkiwii/Random-Stuff/blob/master/as3/src/ObjectBuilder.as

This is a helper class to create objects like if you were calling "apply" on the constructor object. An example:

class MyObject { public function MyObject(a, b, c) { ... } }

// normal object creation var a:MyObject = new MyObject('a', 'b', 'c');

// using ObjectBuilder var p:Array = ['a', 'b', 'c']; var b:MyOBject = ObjectBuilder.buildFromArray(MyObject, p);

Expand | Embed | Plain Text 
  1. package
  2. {
  3. 	public class ObjectBuilder
  4. 	{
  5. 		static private const builders:Array = [
  6. 			build0p, build1p, build2p, build3p, build4p,
  7. 			build5p, build6p, build7p, build8p, build9p
  8. 		];
  9.  
  10. 		static public function buildFromParams(ObjectClass:Class, ...params):* {
  11. 			return builders[params.length](ObjectClass, params);
  12. 		}
  13.  
  14. 		static public function buildFromArray(ObjectClass:Class, params:Array):* {
  15. 			return builders[params.length](ObjectClass, params);
  16. 		}
  17.  
  18. 		static private function build0p(ObjectClass:Class, p:Array):* { return new ObjectClass(); }
  19. 		static private function build1p(ObjectClass:Class, p:Array):* { return new ObjectClass(p[0]); }
  20. 		static private function build2p(ObjectClass:Class, p:Array):* { return new ObjectClass(p[0], p[1]); }
  21. 		static private function build3p(ObjectClass:Class, p:Array):* { return new ObjectClass(p[0], p[1], p[2]); }
  22. 		static private function build4p(ObjectClass:Class, p:Array):* { return new ObjectClass(p[1], p[1], p[2], p[3]); }
  23. 		static private function build5p(ObjectClass:Class, p:Array):* { return new ObjectClass(p[0], p[1], p[2], p[3], p[4]); }
  24. 		static private function build6p(ObjectClass:Class, p:Array):* { return new ObjectClass(p[0], p[1], p[2], p[3], p[4], p[5]); }
  25. 		static private function build7p(ObjectClass:Class, p:Array):* { return new ObjectClass(p[0], p[1], p[2], p[3], p[4], p[5], p[6]); }
  26. 		static private function build8p(ObjectClass:Class, p:Array):* { return new ObjectClass(p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]); }
  27. 		static private function build9p(ObjectClass:Class, p:Array):* { return new ObjectClass(p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], p[8]); }
  28. 	}
  29. }

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