/*

 * Copyright (c) 2001, 2006, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.sun.tools.javac.util;

import com.sun.tools.javac.main.OptionName;

import java.util.*;

/** A table of all command-line options.

 *  If an option has an argument, the option name is mapped to the argument.

 *  If a set option has no argument, it is mapped to itself.

 *

 *  This code and its internal interfaces are subject to change or

 *  deletion without notice.</b>

 */

public class Options {

    private static final long serialVersionUID = 0;

    /** The context key for the options. */

    public static final Context.Key<Options> optionsKey =

        new Context.Key<Options>();

    private LinkedHashMap<String,String> values;

    /** Get the Options instance for this context. */

    public static Options instance(Context context) {

        Options instance = context.get(optionsKey);

        if (instance == null)

            instance = new Options(context);

        return instance;

    }

    protected Options(Context context) {

// DEBUGGING -- Use LinkedHashMap for reproducability

        values = new LinkedHashMap<String,String>();

        context.put(optionsKey, this);

    }

    public String get(String name) {

        return values.get(name);

    }

    public String get(OptionName name) {

        return values.get(name.optionName);

    }

    public void put(String name, String value) {

        values.put(name, value);

    }

    public void put(OptionName name, String value) {

        values.put(name.optionName, value);

    }

    public void putAll(Options options) {

        values.putAll(options.values);

    }

    public void remove(String name) {

        values.remove(name);

    }

    public Set<String> keySet() {

        return values.keySet();

    }

    public int size() {

        return values.size();

    }

    static final String LINT = "-Xlint";

    /** Check for a lint suboption. */

    public boolean lint(String s) {

        // return true if either the specific option is enabled, or

        // they are all enabled without the specific one being

        // disabled

        return

            get(LINT + ":" + s)!=null ||

            (get(LINT)!=null || get(LINT + ":all")!=null) &&

                get(LINT+":-"+s)==null;

    }

}