59 lines
1.2 KiB
TypeScript
59 lines
1.2 KiB
TypeScript
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/**
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* 帮助处理位掩码的实用程序类
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*/
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class Flags {
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/**
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* 检查位标志是否已在整型中设置
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* @param self
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* @param flag
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*/
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public static isFlagSet(self: number, flag: number){
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return (self & flag) != 0;
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}
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/**
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* 检查位标志是否在整型中设置
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* @param self
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* @param flag
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*/
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public static isUnshiftedFlagSet(self: number, flag: number){
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flag = 1 << flag;
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return (self & flag) != 0;
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}
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/**
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* 设置标志位，移除所有已经设置的标志
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* @param self
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* @param flag
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*/
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public static setFlagExclusive(self: number, flag: number){
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self = 1 << flag;
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}
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/**
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* 设置标志位
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* @param self
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* @param flag
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*/
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public static setFlag(self: number, flag: number){
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self = (self | 1 << flag);
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}
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/**
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* 取消标志位
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* @param self
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* @param flag
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*/
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public static unsetFlag(self: number, flag: number){
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flag = 1 << flag;
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self = (self & (~flag));
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}
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/**
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* 反转集合位
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* @param self
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*/
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public static invertFlags(self: number){
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self = ~self;
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}
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}
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