+++ /dev/null
-/* PermissionCollection.java -- A collection of permission objects
- Copyright (C) 1998, 2001 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.
-
-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 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.
- * <p>
- * Some care must be taken in storing permissions. First, a collection of
- * the appropriate type must be created. This is done by calling the
- * <code>newPermissionCollection</code> method on an object of the
- * permission class you wish to add to the collection. If this method
- * returns <code>null</code>, any type of <code>PermissionCollection</code>
- * can be used to store permissions of that type. However, if a
- * <code>PermissionCollection</code> collection object is returned, that
- * type must be used.
- * <p>
- * The <code>PermissionCollection</code>'s returned
- * by the <code>newPermissionCollection</code> instance in a subclass of
- * <code>Permission</code> is a homogeneous collection. It only will
- * hold permissions of one specified type - instances of the class that
- * created it. Not all <code>PermissionCollection</code> subclasses
- * have to hold permissions of only one type however. For example,
- * the <code>Permissions</code> class holds permissions of many types.
- * <p>
- * Since the <code>newPermissionCollection</code> in <code>Permission</code>
- * itself returns <code>null</code>, by default a permission can be stored
- * in any type of collection unless it overrides that method to create its
- * own collection type.
- *
- * @version 0.0
- *
- * @author Aaron M. Renn (arenn@urbanophile.com)
- */
-public abstract class PermissionCollection
- extends Object
- implements Serializable
-{
- private static final String linesep = null;
-
- static
- {
- String linesep = System.getProperty("line.separator");
- if (linesep == null);
- linesep = "\n";
- }
-
- /**
- * Indicates whether or not this collection is read only.
- */
- private boolean readOnly;
-
- /**
- * This method initializes a new instance of <code>PermissionCollection</code>.
- * This is provided only as a default constructor and does nothing in this
- * class.
- */
- public PermissionCollection()
- {
- }
-
- /**
- * This method tests whether or not this <code>PermissionCollection</code>
- * object is read only.
- *
- * @return <code>true</code> if this collection is read only, <code>false</code> otherwise
- */
- public boolean isReadOnly()
- {
- return (readOnly);
- }
-
- /**
- * This method sets this <code>PermissionCollection</code> object to be
- * read only. No further permissions can be added to it after calling this
- * method.
- */
- public void setReadOnly()
- {
- readOnly = true;
- }
-
- /**
- * This method adds a new <code>Permission</code> object to the collection.
- *
- * @param perm The <code>Permission</code> to add.
- *
- * @exception SecurityException If the collection is marked read only.
- * @exception IllegalArgumentException If a permission of the specified type cannot be added
- */
- public abstract void
- add(Permission perm) throws SecurityException, IllegalArgumentException;
-
- /**
- * This method returns an <code>Enumeration</code> of all the objects in
- * this collection.
- *
- * @return An <code>Enumeration</code> of this collection's objects.
- */
- public abstract Enumeration elements();
-
- /**
- * This method tests whether the specified <code>Permission</code> object is
- * implied by this collection of <code>Permission</code> objects.
- *
- * @param perm The <code>Permission</code> object to test.
- *
- * @return <code>true</code> if the specified <code>Permission</code> is implied by this collection, <code>false</code> otherwise.
- */
- public abstract boolean implies(Permission perm);
-
- /**
- * This method returns a <code>String</code> representation of this
- * collection. It will print the class name and has code in the same
- * manner as <code>Object.toString()</code> then print a listing of all
- * the <code>Permission</code> objects contained.
- *
- * @return A <code>String</code> representing this object.
- */
- public String toString()
- {
- StringBuffer sb = new StringBuffer("");
-
- sb.append(super.toString() + " (" + linesep);
- Enumeration e = elements();
- while (e.hasMoreElements())
- {
- Object obj = e.nextElement();
- if (obj instanceof Permission)
- sb.append(((Permission) obj).toString() + linesep);
- }
-
- sb.append(")" + linesep);
- return (sb.toString());
- }
-}
projects / msp430-gcc.git / blobdiff