package jp.ac.u_ryukyu.ie.cr.jungle.store.trasnformer;


import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.TreeNode;
import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.logger.LoggingNode;
import jp.ac.u_ryukyu.ie.cr.jungle.store.impl.logger.OperationLog;
import jp.ac.u_ryukyu.ie.cr.jungle.util.DefaultEither;
import jp.ac.u_ryukyu.ie.cr.jungle.util.Either;
import jp.ac.u_ryukyu.ie.cr.jungle.util.Error;

public class MoveChild implements NodeEditor
{
	private final String move;
	private final int childNum;
	public MoveChild(String move, int childNum)
	{
		this.childNum = childNum;
		this.move = move;
	}

	public Either<Error,LoggingNode> _edit(LoggingNode logNode)
	{
		Either<Error,LoggingNode> either = logNode.getChildren().moveChild(move, childNum);
		if(either.isA()){
			// error
			return either;
		}
		return DefaultEither.newB(either.b());
	}

	@Override
	public Either<Error, LoggingNode> edit(TreeNode _e) {
		LoggingNode logNode = wrap(_e);
		return _edit(logNode);
	}

	public LoggingNode wrap(TreeNode node) {
		return new LoggingNode(node);
	}

	@Override
	public LoggingNode wrap(TreeNode node, OperationLog op) {
		return new LoggingNode(node, op);
	}
}