001    /*
002     * Copyright 2001-2006 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.javac.util;
027    
028    import com.sun.tools.javac.main.OptionName;
029    import java.util.*;
030    
031    /** A table of all command-line options.
032     *  If an option has an argument, the option name is mapped to the argument.
033     *  If a set option has no argument, it is mapped to itself.
034     *
035     *  <p><b>This is NOT part of any API supported by Sun Microsystems.  If
036     *  you write code that depends on this, you do so at your own risk.
037     *  This code and its internal interfaces are subject to change or
038     *  deletion without notice.</b>
039     */
040    public class Options {
041        private static final long serialVersionUID = 0;
042    
043        /** The context key for the options. */
044        public static final Context.Key<Options> optionsKey =
045            new Context.Key<Options>();
046    
047        private LinkedHashMap<String,String> values;
048    
049        /** Get the Options instance for this context. */
050        public static Options instance(Context context) {
051            Options instance = context.get(optionsKey);
052            if (instance == null)
053                instance = new Options(context);
054            return instance;
055        }
056    
057        protected Options(Context context) {
058    // DEBUGGING -- Use LinkedHashMap for reproducability
059            values = new LinkedHashMap<String,String>();
060            context.put(optionsKey, this);
061        }
062    
063        public String get(String name) {
064            return values.get(name);
065        }
066    
067        public String get(OptionName name) {
068            return values.get(name.optionName);
069        }
070    
071        public void put(String name, String value) {
072            values.put(name, value);
073        }
074    
075        public void put(OptionName name, String value) {
076            values.put(name.optionName, value);
077        }
078    
079        public void putAll(Options options) {
080            values.putAll(options.values);
081        }
082    
083        public void remove(String name) {
084            values.remove(name);
085        }
086    
087        public Set<String> keySet() {
088            return values.keySet();
089        }
090    
091        public int size() {
092            return values.size();
093        }
094    
095        static final String LINT = "-Xlint";
096    
097        /** Check for a lint suboption. */
098        public boolean lint(String s) {
099            // return true if either the specific option is enabled, or
100            // they are all enabled without the specific one being
101            // disabled
102            return
103                get(LINT + ":" + s)!=null ||
104                (get(LINT)!=null || get(LINT + ":all")!=null) &&
105                    get(LINT+":-"+s)==null;
106        }
107    }