using UnityEngine;
using System.Collections;
using System;

public class DeleteAttributeOperation : NodeOperation {
	private string key;

	public DeleteAttributeOperation(string _key) {
		key = _key;
	}

	public Command getCommand() {
		return Command.DELETE_ATTRIBUTE;
	}

	public Either<Error, TreeNode> invoke(TreeNode _target) {
		return _target.getAttributes ().delete (key);
	}

	public int getPosition() {
		return -1;
	}

	public string getKey() {
		return key;
	}

	public byte[] getValue() {
		return new byte[1]{0};
	}

}