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author	Robert Dewar <dewar@adacore.com>	2015-05-26 08:06:51 +0000
committer	Arnaud Charlet <charlet@gcc.gnu.org>	2015-05-26 10:06:51 +0200
commit	07aa5e6fa1e8bbee4a3ba080d449deb24f0d647e (patch)
tree	4addf6343913b54f7ff386157aa4217fb0b887c0 /libjava/classpath/java/nio/ShortViewBufferImpl.java
parent	70ce46792a8915eae18b929664de99fed5d64e00 (diff)
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sem_util.adb: Minor code reorganization.

2015-05-26 Robert Dewar <dewar@adacore.com> * sem_util.adb: Minor code reorganization. * sem_ch6.adb: Minor reformatting. From-SVN: r223662

Diffstat (limited to 'libjava/classpath/java/nio/ShortViewBufferImpl.java')

0 files changed, 0 insertions, 0 deletions

/* AccessControlContext.java --- Access Control Context Class Copyright (C) 1999 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. As a special exception, if you link this library with other files to produce an executable, this library does not by itself cause the resulting executable to be covered by the GNU General Public License. This exception does not however invalidate any other reasons why the executable file might be covered by the GNU General Public License. */ package java.security; /** AccessControlContext makes system resource access decsion based on permission rights. It is used for a specific context and has only one method checkPermission. It is similar to AccessController except that it makes decsions based on the current context instead of the the current thread. It is created by call AccessController.getContext method. @author Mark Benvenuto @since JDK 1.2 */ public final class AccessControlContext { private ProtectionDomain protectionDomain[]; private DomainCombiner combiner; /** Construct a new AccessControlContext with the specified ProtectionDomains. <code>context</code> must not be null and duplicates will be removed. @param context The ProtectionDomains to use */ public AccessControlContext(ProtectionDomain[]context) { int i, j, k, count = context.length, count2 = 0; for (i = 0, j = 0; i < count; i++) { for (k = 0; k < i; k++) if (context[k] == protectionDomain[i]) break; if (k != i) //it means previous loop did not complete continue; count2++; } protectionDomain = new ProtectionDomain[count2]; for (i = 0, j = 0; i < count2; i++) { for (k = 0; k < i; k++) if (context[k] == protectionDomain[i]) break; if (k != i) //it means previous loop did not complete continue; protectionDomain[j++] = context[i]; } } /** Construct a new AccessControlContext with the specified ProtectionDomains and DomainCombiner @param context The ProtectionDomains to use @since JDK 1.3 */ public AccessControlContext(AccessControlContext acc, DomainCombiner combiner) { this(acc.protectionDomain); this.combiner = combiner; } /** Returns the Domain Combiner associated with the AccessControlContext @returns the DomainCombiner */ public DomainCombiner getDomainCombiner() { return combiner; } /** Determines whether or not the specific permission is granted depending on the context it is within. @param perm a permission to check @throws AccessControlException if the permssion is not permitted */ public void checkPermission(Permission perm) throws AccessControlException { for (int i = 0; i < protectionDomain.length; i++) if (protectionDomain[i].implies(perm) == true) return; throw new AccessControlException("Permission not granted"); } /** Checks if two AccessControlContexts are equal. It first checks if obj is an AccessControlContext class, and then checks if each ProtectionDomain matches. @param obj The object to compare this class to @return true if equal, false otherwise */ public boolean equals(Object obj) { if (obj instanceof AccessControlContext) { AccessControlContext acc = (AccessControlContext) obj; if (acc.protectionDomain.length != protectionDomain.length) return false; for (int i = 0; i < protectionDomain.length; i++) if (acc.protectionDomain[i] != protectionDomain[i]) return false; return true; } return false; } /** Computes a hash code of this class @return a hash code representing this class */ public int hashCode() { int h = 0; for (int i = 0; i < protectionDomain.length; i++) h ^= protectionDomain[i].hashCode(); return h; } }


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