com.alibaba.rocketmq.common.filter.impl

类 PolishExpr

java.lang.Object

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

public class PolishExpr
extends Object

构造器概要

构造器

构造器和说明
PolishExpr()

方法概要

方法

限定符和类型	方法和说明
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

从类继承的方法 java.lang.Object

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

构造器详细资料

PolishExpr

public PolishExpr()

方法详细资料

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)

isLeftParenthesis

public static boolean isLeftParenthesis(Op token)

isRightParenthesis

public static boolean isRightParenthesis(Op token)

isOperator

public static boolean isOperator(Op token)