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//Implementation of FSA, via a linked node-like interface.

var FSA = (function(){
	function FSA(val){
		this.val = val;
		this.next = null;
	}
	FSA.prototype.setNext = function(val){
		this.next = new FSA(val);
	};
	//needs to be appended inside controlling object
	FSA.prototype.switchState = function(){
		if(this.next){
			return this.next;
		}
	};
	return FSA;
})();

//constant reverse switching
/*    var a = new FSA(8);
   a
=> { val: 8, next: null }
   a.setNext(3)
   a
=> { val: 8, next: { val: 3, next: null } }
   a.next.next = a
=> { val: 8, next: { val: 3, next: [Circular] } }
   var b = a.switchState
   b
=> [Function]
   var b = a.switchState()
   b
=> { val: 3, next: { val: 8, next: [Circular] } }
   var b = a.switchState()
   b
=> { val: 3, next: { val: 8, next: [Circular] } }
   var b = a.switchState()
   b
=> { val: 3, next: { val: 8, next: [Circular] } }
   var b = b.switchState()
   b
=> { val: 8, next: { val: 3, next: [Circular] } }*/