package edu.lsu.cct.MCSMPGC;

public class Mutator extends Thread {

	public Memory memory;
	public int testcase;
	public Mutator(Memory memory,int testcase){
		super();
		this.memory = memory;
		this.testcase = testcase;
	}
	public void run(){
		switch(testcase){
		case TestCases.SIMPLE_CYCLE_1_ANCHOR:
			simpleCycle1Anchor(10);
			break;
		case TestCases.SIMPLE_CYCLE_2_ANCHOR:
			simpleCycle2AnchorRecover(10);
			break;
		}
	}
	
	private void simpleCycle2AnchorRecover(int n) {
		Node no = null;
		Node prev = null;
		Node current;
		for(int i = 0 ; i < n; i++){
			if(i==0){
				no = memory.alloc();
				no.value = String.valueOf(i);
				no.anchored(memory);
				prev = no;
			}
			else{
				current = memory.alloc();
				current.value = String.valueOf(i);
				prev.refs.add(current.address);
				prev = current;
			}
		}
		prev.refs.add(no.address);
		prev.anchored(memory);
		System.out.println("free "+memory.free.size()+"  allocated "+memory.allocated.size());
		traversal(no.address);
		if(no.removeanchor()){
			memory.anchors.remove(no);
			Collector c = new Collector(no.address);
			c.start();
		}		
	}
	private void simpleCycle1Anchor(int n) {
		// TODO Auto-generated method stub
		Node no = null;
		Node prev = null;
		Node current;
		for(int i = 0 ; i < n; i++){
			if(i==0){
				no = memory.alloc();
				no.value = String.valueOf(i);
				no.anchored(memory);
				prev = no;
			}
			else{
				current = memory.alloc();
				current.value = String.valueOf(i);
				prev.refs.add(current.address);
				prev = current;
			}
		}
		prev.refs.add(no.address);
		System.out.println("free "+memory.free.size()+"  allocated "+memory.allocated.size());
		traversal(no.address);
		if(no.removeanchor()){
			memory.anchors.remove(no);
			Collector c = new Collector(no.address);
			c.start();
		}
	}
	private void traversal(int address) {
		// TODO Auto-generated method stub
		if(memory.anchors.contains(address)){
			System.out.println("The object at address "+ address + " is an anchor");
			Node first = memory.allocated.get(address);
			Node next =first;
			while(true){
				System.out.print(next.value +" -> "+((Reference)next.refs.links.get(0)).type()+" ");
				next = memory.allocated.get(next.refs.links.get(0).to);
				if(next==first){
					System.out.print(first.address);
					break;
				}
			}
		}
	}
	
	
}