001    /*
002     * Copyright 2007-2008 Sun Microsystems, Inc.  All Rights Reserved.
003     * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004     *
005     * This code is free software; you can redistribute it and/or modify it
006     * under the terms of the GNU General Public License version 2 only, as
007     * published by the Free Software Foundation.  Sun designates this
008     * particular file as subject to the "Classpath" exception as provided
009     * by Sun in the LICENSE file that accompanied this code.
010     *
011     * This code is distributed in the hope that it will be useful, but WITHOUT
012     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013     * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
014     * version 2 for more details (a copy is included in the LICENSE file that
015     * accompanied this code).
016     *
017     * You should have received a copy of the GNU General Public License version
018     * 2 along with this work; if not, write to the Free Software Foundation,
019     * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020     *
021     * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022     * CA 95054 USA or visit www.sun.com if you need additional information or
023     * have any questions.
024     */
025    
026    package com.sun.tools.javap;
027    
028    import java.util.HashMap;
029    import java.util.Map;
030    
031    /*
032     *  Class from which to put/get shared resources.
033     *
034     *  <p><b>This is NOT part of any API supported by Sun Microsystems.  If
035     *  you write code that depends on this, you do so at your own risk.
036     *  This code and its internal interfaces are subject to change or
037     *  deletion without notice.</b>
038     */
039    public class Context {
040        public Context() {
041           map = new HashMap<Class<?>, Object>();
042        }
043    
044        @SuppressWarnings("unchecked")
045        public <T> T get(Class<T> key) {
046            return (T) map.get(key);
047        }
048    
049        @SuppressWarnings("unchecked")
050        public <T> T put(Class<T> key, T value) {
051            return (T) map.put(key, value);
052        }
053    
054        Map<Class<?>, Object> map;
055    }