From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- .../java/security/PermissionCollection.java | 169 +++++++++++++++++++++ 1 file changed, 169 insertions(+) create mode 100644 libjava/classpath/java/security/PermissionCollection.java (limited to 'libjava/classpath/java/security/PermissionCollection.java') diff --git a/libjava/classpath/java/security/PermissionCollection.java b/libjava/classpath/java/security/PermissionCollection.java new file mode 100644 index 000000000..ef87cc7e1 --- /dev/null +++ b/libjava/classpath/java/security/PermissionCollection.java @@ -0,0 +1,169 @@ +/* PermissionCollection.java -- A collection of permission objects + Copyright (C) 1998, 2001, 2002, 2005 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., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + +package java.security; + +import gnu.java.lang.CPStringBuilder; + +import java.io.Serializable; +import java.util.Enumeration; + +/** + * This class models a group of Java permissions. It has convenient + * methods for determining whether or not a given permission is implied + * by any of the permissions in this collection. + * + *

Some care must be taken in storing permissions. First, a collection of + * the appropriate type must be created. This is done by calling the + * newPermissionCollection method on an object of the + * permission class you wish to add to the collection. If this method + * returns null, any type of PermissionCollection + * can be used to store permissions of that type. However, if a + * PermissionCollection collection object is returned, that + * type must be used. + * + *

A PermissionCollection returned by the + * newPermissionCollection method in a subclass of + * Permission is a homogeneous collection. It only will + * hold permissions of one specified type - instances of the class that + * created it. Not all PermissionCollection subclasses + * have to hold permissions of only one type however. For example, + * the Permissions class holds permissions of many types. + * + *

Since the newPermissionCollection in Permission + * itself returns null, by default a permission can be stored + * in any type of collection unless it overrides that method to create its + * own collection type. + * + * @author Aaron M. Renn (arenn@urbanophile.com) + * @author Eric Blake (ebb9@email.byu.edu) + * @see Permission + * @see Permissions + * @since 1.1 + * @status updated to 1.4 + */ +public abstract class PermissionCollection implements Serializable +{ + /** + * Compatible with JDK 1.1+. + */ + private static final long serialVersionUID = -6727011328946861783L; + + /** + * Indicates whether or not this collection is read only. + * + * @serial if the collection is read-only + */ + private boolean readOnly; + + /** + * Create a new collection. + */ + public PermissionCollection() + { + } + + /** + * This method adds a new Permission object to the collection. + * + * @param perm the Permission to add + * + * @throws SecurityException if the collection is marked read only + * @throws IllegalArgumentException if perm is of the wrong type + */ + public abstract void add(Permission perm); + + /** + * This method tests whether the specified Permission object is + * implied by this collection of Permission objects. + * + * @param perm the Permission object to test + * @return true if the collection implies perm + */ + public abstract boolean implies(Permission perm); + + /** + * This method returns an Enumeration of all the objects in + * this collection. + * + * @return an Enumeration of this collection's objects + */ + public abstract Enumeration elements(); + + /** + * This method sets this PermissionCollection object to be + * read only. No further permissions can be added to it after calling this + * method. + */ + public void setReadOnly() + { + readOnly = true; + } + + /** + * This method tests whether or not this PermissionCollection + * object is read only. + * + * @return true if this collection is read only + */ + public boolean isReadOnly() + { + return readOnly; + } + + /** + * This method returns a String representation of this + * collection. It is formed by: + *

+   * super.toString()" (\n"
+   *   // enumerate all permissions, one per line
+   * ")\n"
+   * 
+ * + * @return a String representing this object + */ + public String toString() + { + CPStringBuilder sb = new CPStringBuilder(super.toString()); + + sb.append(" (\n"); + Enumeration e = elements(); + while (e.hasMoreElements()) + sb.append(' ').append(e.nextElement()).append('\n'); + return sb.append(")\n").toString(); + } +} // class PermissionCollection -- cgit v1.2.3