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

 /*

  * Copyright (c) 2006, 2008, 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.main;

 import java.io.PrintWriter;

 import java.util.LinkedHashMap;

 import java.util.Map;

 import com.sun.tools.javac.util.Log;

 import com.sun.tools.javac.util.Options;

 /**

  * TODO: describe com.sun.tools.javac.main.JavacOption

  *

  * <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></p>

  */

 public interface JavacOption {

     OptionKind getKind();

     /** Does this option take a (separate) operand?

      *  @return true if this option takes a separate operand

      */

     boolean hasArg();

     /** Does argument string match option pattern?

      *  @param arg   the command line argument string

      *  @return true if {@code arg} matches this option

      */

     boolean matches(String arg);

     /** Process an option with an argument.

      *  @param options the accumulated set of analyzed options

      *  @param option  the option to be processed

      *  @param arg     the arg for the option to be processed

      *  @return true if an error was detected

      */

     boolean process(Options options, String option, String arg);

     /** Process the option with no argument.

      *  @param options the accumulated set of analyzed options

      *  @param option  the option to be processed

      *  @return true if an error was detected

      */

     boolean process(Options options, String option);

     OptionName getName();

     enum OptionKind {

         NORMAL,

         EXTENDED,

         HIDDEN,

     }

     enum ChoiceKind {

         ONEOF,

         ANYOF

     }

     /** This class represents an option recognized by the main program

      */

     static class Option implements JavacOption {

         /** Option string.

          */

         OptionName name;

         /** Documentation key for arguments.

          */

         String argsNameKey;

         /** Documentation key for description.

          */

         String descrKey;

         /** Suffix option (-foo=bar or -foo:bar)

          */

         boolean hasSuffix;

         /** The kind of choices for this option, if any.

          */

         ChoiceKind choiceKind;

         /** The choices for this option, if any, and whether or not the choices

          *  are hidden

          */

         Map<String,Boolean> choices;

         Option(OptionName name, String argsNameKey, String descrKey) {

             this.name = name;

             this.argsNameKey = argsNameKey;

             this.descrKey = descrKey;

             char lastChar = name.optionName.charAt(name.optionName.length()-1);

             hasSuffix = lastChar == ':' || lastChar == '=';

         }

         Option(OptionName name, String descrKey) {

             this(name, null, descrKey);

         }

         Option(OptionName name, String descrKey, ChoiceKind choiceKind, String... choices) {

             this(name, descrKey, choiceKind, createChoices(choices));

         }

         private static Map<String,Boolean> createChoices(String... choices) {

             Map<String,Boolean> map = new LinkedHashMap<String,Boolean>();

             for (String c: choices)

                 map.put(c, false);

             return map;

         }

         Option(OptionName name, String descrKey, ChoiceKind choiceKind,

                 Map<String,Boolean> choices) {

             this(name, null, descrKey);

             if (choiceKind == null || choices == null)

                 throw new NullPointerException();

             this.choiceKind = choiceKind;

             this.choices = choices;

         }

         @Override

         public String toString() {

             return name.optionName;

         }

         public boolean hasArg() {

             return argsNameKey != null && !hasSuffix;

         }

         public boolean matches(String option) {

             if (!hasSuffix)

                 return option.equals(name.optionName);

             if (!option.startsWith(name.optionName))

                 return false;

             if (choices != null) {

                 String arg = option.substring(name.optionName.length());

                 if (choiceKind == ChoiceKind.ONEOF)

                     return choices.keySet().contains(arg);

                 else {

                     for (String a: arg.split(",+")) {

                         if (!choices.keySet().contains(a))

                             return false;

                     }

                 }

             }

             return true;

         }

         /** Print a line of documentation describing this option, if standard.

          * @param out the stream to which to write the documentation

          */

         void help(PrintWriter out) {

             String s = "  " + helpSynopsis();

             out.print(s);

             for (int j = Math.min(s.length(), 28); j < 29; j++) out.print(" ");

             Log.printLines(out, Main.getLocalizedString(descrKey));

         }

         String helpSynopsis() {

             StringBuilder sb = new StringBuilder();

             sb.append(name);

             if (argsNameKey == null) {

                 if (choices != null) {

                     String sep = "{";

                     for (Map.Entry<String,Boolean> e: choices.entrySet()) {

                         if (!e.getValue()) {

                             sb.append(sep);

                             sb.append(e.getKey());

                             sep = ",";

                         }

                     }

                     sb.append("}");

                 }

             } else {

                 if (!hasSuffix)

                     sb.append(" ");

                 sb.append(Main.getLocalizedString(argsNameKey));

             }

             return sb.toString();

         }

         /** Print a line of documentation describing this option, if non-standard.

          *  @param out the stream to which to write the documentation

          */

         void xhelp(PrintWriter out) {}

         /** Process the option (with arg). Return true if error detected.

          */

         public boolean process(Options options, String option, String arg) {

             if (options != null) {

                 if (choices != null) {

                     if (choiceKind == ChoiceKind.ONEOF) {

                         // some clients like to see just one of option+choice set

                         for (String s: choices.keySet())

                             options.remove(option + s);

                         String opt = option + arg;

                         options.put(opt, opt);

                         // some clients like to see option (without trailing ":")

                         // set to arg

                         String nm = option.substring(0, option.length() - 1);

                         options.put(nm, arg);

                     } else {

                         // set option+word for each word in arg

                         for (String a: arg.split(",+")) {

                             String opt = option + a;

                             options.put(opt, opt);

                         }

                     }

                 }

                 options.put(option, arg);

             }

             return false;

         }

         /** Process the option (without arg). Return true if error detected.

          */

         public boolean process(Options options, String option) {

             if (hasSuffix)

                 return process(options, name.optionName, option.substring(name.optionName.length()));

             else

                 return process(options, option, option);

         }

         public OptionKind getKind() { return OptionKind.NORMAL; }

         public OptionName getName() { return name; }

     };

     /** A nonstandard or extended (-X) option

      */

     static class XOption extends Option {

         XOption(OptionName name, String argsNameKey, String descrKey) {

             super(name, argsNameKey, descrKey);

         }

         XOption(OptionName name, String descrKey) {

             this(name, null, descrKey);

         }

         XOption(OptionName name, String descrKey, ChoiceKind kind, String... choices) {

             super(name, descrKey, kind, choices);

         }

         XOption(OptionName name, String descrKey, ChoiceKind kind, Map<String,Boolean> choices) {

             super(name, descrKey, kind, choices);

         }

         @Override

         void help(PrintWriter out) {}

         @Override

         void xhelp(PrintWriter out) { super.help(out); }

         @Override

         public OptionKind getKind() { return OptionKind.EXTENDED; }

     };

     /** A hidden (implementor) option

      */

     static class HiddenOption extends Option {

         HiddenOption(OptionName name) {

             super(name, null, null);

         }

         HiddenOption(OptionName name, String argsNameKey) {

             super(name, argsNameKey, null);

         }

         @Override

         void help(PrintWriter out) {}

         @Override

         void xhelp(PrintWriter out) {}

         @Override

         public OptionKind getKind() { return OptionKind.HIDDEN; }

     };

 }