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Panda Core is the core module of Panda Framework, it contains commonly used utility classes similar to apache-commons.
package panda.el;
import java.util.Queue;
/**
* 操作符
*/
public interface Operator {
/**
* @return the priority of the operator
*/
public int getPriority();
/**
* 打包数据. 每个操作符都有相应的操作数,这个方法目的在于,根据操作符自身的需求,从operand中读取相应的操作数
*
* @param operand 操作数
*/
public void wrap(Queue