com.alibaba.rocketmq.common.filter.impl
类 PolishExpr

java.lang.Object
  com.alibaba.rocketmq.common.filter.impl.PolishExpr

public class PolishExpr
extends Object

构造方法摘要

PolishExpr()

方法摘要

static boolean	isLeftParenthesis(Op token)
static boolean	isOperand(Op token)
static boolean	isOperator(Op token)
static boolean	isRightParenthesis(Op token)
static List<Op>	reversePolish(List<Op> tokens) 将中缀表达式转换成逆波兰表达式 Shunting-yard algorithm http://en.wikipedia.org/wiki/Shunting_yard_algorithm
static List<Op>	reversePolish(String expression) 将中缀表达式转换成逆波兰表达式

从类 java.lang.Object 继承的方法

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造方法详细信息

PolishExpr

public PolishExpr()

方法详细信息

reversePolish

public static List<Op> reversePolish(String expression)

将中缀表达式转换成逆波兰表达式

参数：

expression -

返回：

reversePolish

public static List<Op> reversePolish(List<Op> tokens)

将中缀表达式转换成逆波兰表达式
Shunting-yard algorithm
http://en.wikipedia.org/wiki/Shunting_yard_algorithm

参数：

tokens -

返回：

isOperand

public static boolean isOperand(Op token)

isOperator

public static boolean isOperator(Op token)

isLeftParenthesis

public static boolean isLeftParenthesis(Op token)

isRightParenthesis

public static boolean isRightParenthesis(Op token)