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/* gnu.classpath.tools.taglets.ValueTaglet

   Copyright (C) 2004 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2, or (at your option)

any later version.

GNU Classpath 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 for more details.

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

along with GNU Classpath; see the file COPYING.  If not, write to the

Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

02111-1307 USA.

Linking this library statically or dynamically with other modules is

making a combined work based on this library.  Thus, the terms and

conditions of the GNU General Public License cover the whole

combination.

As a special exception, the copyright holders of this library give you

permission to link this library with independent modules to produce an

executable, regardless of the license terms of these independent

modules, and to copy and distribute the resulting executable under

terms of your choice, provided that you also meet, for each linked

independent module, the terms and conditions of the license of that

module.  An independent module is a module which is not derived from

or based on this library.  If you modify this library, you may extend

this exception to your version of the library, but you are not

obligated to do so.  If you do not wish to do so, delete this

exception statement from your version. */

package gnu.classpath.tools.taglets;

import java.util.Map;

import com.sun.tools.doclets.Taglet;

import com.sun.javadoc.Doc;

import com.sun.javadoc.Tag;

import com.sun.javadoc.FieldDoc;

import com.sun.javadoc.MemberDoc;

import com.sun.javadoc.SeeTag;

/**

 *  The default Taglet which shows final static field values.

 *

 *  @author Julian Scheid (julian@sektor37.de)

 */

public class ValueTaglet

   implements GnuExtendedTaglet

{

   private static final String NAME = "value";

   public String getName() {

      return NAME;

   }

   public boolean inField() {

      return true;

   }

   public boolean inConstructor() {

      return true;

   }

   public boolean inMethod() {

      return true;

   }

   public boolean inOverview() {

      return true;

   }

   public boolean inPackage() {

      return true;

   }

   public boolean inType() {

      return true;

   }

   public boolean isInlineTag() {

      return true;

   }

   public static void register(Map tagletMap) {

      ValueTaglet valueTaglet = new ValueTaglet();

      tagletMap.put(valueTaglet.getName(), valueTaglet);

   }

   public String toString(Tag tag) {

      return null;

   }

   public String toString(Tag tag, TagletContext context) {

      if (0 == tag.inlineTags().length) {

         if (context.getDoc().isField()) {

            FieldDoc fieldDoc = (FieldDoc)context.getDoc();

            if (fieldDoc.isStatic() && fieldDoc.isFinal()) {

               return fieldDoc.constantValueExpression();

            }

         }

      }

      else {

         MemberDoc referencedMember = ((SeeTag)tag).referencedMember();

         if (null != referencedMember && referencedMember.isField()) {

            FieldDoc fieldDoc = (FieldDoc)referencedMember;

            if (fieldDoc.isStatic() && fieldDoc.isFinal()) {

               return fieldDoc.constantValueExpression();

            }

         }

      }

      return "";

   }

   public String toString(Tag[] tags) {

      return null;

   }

   public String toString(Tag[] tags, TagletContext context) {

      return null;

   }

}