io.github.wycst.wast.common.expression.ElOperator Maven / Gradle / Ivy
package io.github.wycst.wast.common.expression;
/**
* 按java语法的操作符号优先级仅供参考，值越小优先级越高
*
支持科学计数法e+n，16进制0x，8进制0n
*
支持∈和∉
*
*
* 符号 优先级
* () 1
* ** 9 (指数运算，平方（根），立方（根）)
* /*% 10
* +- 100
* << >> 200
* &|^ 300+ &(300) < ^(301) < |(302)
* ><== 500
* && || 600
* ? : 700( ? 701, : 700) 三目运算符优先级放最低,其中:优先级高于?
*
*
* @Date 2024/8/24 22:35
* @Created by wangyc
*/
public enum ElOperator {
ATOM("", 0, 0),
BRACKET("()", 1, 2),
QUESTION_COLON("?:", 2, 0),
NOT("!", 5, 43),
EXP("**", 9, 4),
MULTI("*", 10, 1),
DIVISION("/", 10, 2),
MOD("%", 10, 3),
PLUS("+", 100, 11),
MINUS("-", 100, 12),
BIT_RIGHT(">>", 200, 21),
BIT_LEFT("<<", 200, 22),
AND("&", 300, 31),
XOR("^", 301, 32),
OR("|", 302, 33),
GT(">", 500, 51),
LT("<", 500, 52),
EQ("==", 500, 53),
GE(">=", 500, 54),
LE("<=", 500, 55),
NE("!=", 500, 56),
LOGICAL_AND("&&", 600, 61),
LOGICAL_OR("||", 600, 62),
IN("∈", 600, 63),
OUT("∉", 600, 64),
// COLON("?:", 700, 70),
QUESTION("??", 701, 71),
// todo 拓展类型
EXPAND("\uffff", 800, 80);
static final ElOperator[] INDEXS_OPERATORS = new ElOperator[128];
static {
ElOperator[] values = ElOperator.values();
for (ElOperator value : values) {
String symbol = value.symbol;
if (symbol.length() == 1) {
char c = symbol.charAt(0);
if (c < INDEXS_OPERATORS.length) {
INDEXS_OPERATORS[c] = value;
}
}
}
INDEXS_OPERATORS['='] = EQ;
}
final String symbol;
final int level;
final int type;
ElOperator(String symbol, int level, int type) {
this.symbol = symbol;
this.level = level;
this.type = type;
}
}