Mercurial > jdk8-mips64-public > langtools / file revision

 /*

  * Copyright (c) 2001, 2011, 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 java.util.*;

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

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

 /** 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.

  *

  *  <p><b>This is NOT part of any supported API.

  *  If you write code that depends on this, you do so at your own risk.

  *  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);

     }

     /**

      * Get the value for an undocumented option.

      */

     public String get(String name) {

         return values.get(name);

     }

     /**

      * Get the value for an option.

      */

     public String get(OptionName name) {

         return values.get(name.optionName);

     }

     /**

      * Get the boolean value for an option, patterned after Boolean.getBoolean,

      * essentially will return true, iff the value exists and is set to "true".

      */

     public boolean getBoolean(String name) {

         return getBoolean(name, false);

     }

     /**

      * Get the boolean with a default value if the option is not set.

      */

     public boolean getBoolean(String name, boolean defaultValue) {

         String value = get(name);

         return (value == null) ? defaultValue : Boolean.parseBoolean(value);

     }

     /**

      * Check if the value for an undocumented option has been set.

      */

     public boolean isSet(String name) {

         return (values.get(name) != null);

     }

     /**

      * Check if the value for an option has been set.

      */

     public boolean isSet(OptionName name) {

         return (values.get(name.optionName) != null);

     }

     /**

      * Check if the value for a choice option has been set to a specific value.

      */

     public boolean isSet(OptionName name, String value) {

         return (values.get(name.optionName + value) != null);

     }

     /**

      * Check if the value for an undocumented option has not been set.

      */

     public boolean isUnset(String name) {

         return (values.get(name) == null);

     }

     /**

      * Check if the value for an option has not been set.

      */

     public boolean isUnset(OptionName name) {

         return (values.get(name.optionName) == null);

     }

     /**

      * Check if the value for a choice option has not been set to a specific value.

      */

     public boolean isUnset(OptionName name, String value) {

         return (values.get(name.optionName + value) == null);

     }

     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();

     }

     /** 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

             isSet(XLINT_CUSTOM, s) ||

             (isSet(XLINT) || isSet(XLINT_CUSTOM, "all")) &&

                 isUnset(XLINT_CUSTOM, "-" + s);

     }

 }