71 lines
2.1 KiB
Java
71 lines
2.1 KiB
Java
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013 AlgorithmX2
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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package appeng.api.config;
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public enum AccessRestriction
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{
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NO_ACCESS(0), READ(1), WRITE(2), READ_WRITE(3);
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private final int permissionBit;
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private AccessRestriction(int v) {
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this.permissionBit = v;
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}
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public boolean hasPermission(AccessRestriction ar)
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{
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return ( this.permissionBit & ar.permissionBit) == ar.permissionBit;
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}
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public AccessRestriction restrictPermissions(AccessRestriction ar)
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{
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return this.getPermByBit( this.permissionBit & ar.permissionBit);
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}
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public AccessRestriction addPermissions(AccessRestriction ar)
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{
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return this.getPermByBit( this.permissionBit | ar.permissionBit);
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}
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public AccessRestriction removePermissions(AccessRestriction ar)
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{
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return this.getPermByBit( this.permissionBit & (~ar.permissionBit) );
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}
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private AccessRestriction getPermByBit(int bit)
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{
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switch (bit)
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{
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default:
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case 0:
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return NO_ACCESS;
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case 1:
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return READ;
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case 2:
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return WRITE;
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case 3:
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return READ_WRITE;
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}
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}
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} |