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  * Copyright (c) 2003, 2013, 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

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 package com.sun.tools.doclets.internal.toolkit.taglets;

 import com.sun.javadoc.*;

 import com.sun.tools.doclets.internal.toolkit.*;

 import com.sun.tools.doclets.internal.toolkit.util.*;

 /**

  * The interface for the taglet writer.

  *

  *  <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>

  *

  * @since 1.5

  * @author Jamie Ho

  */

 public abstract class TagletWriter {

     /**

      * True if we only want to write the first sentence.

      */

     protected final boolean isFirstSentence;

     protected TagletWriter(boolean isFirstSentence) {

         this.isFirstSentence = isFirstSentence;

     }

     /**

      * @return an instance of an output object.

      */

     public abstract Content getOutputInstance();

     /**

      * Return the output for a {@code...} tag.

      *

      * @param tag the tag.

      * @return the output of the taglet.

      */

     protected abstract Content codeTagOutput(Tag tag);

     /**

      * Returns the output for the DocRoot inline tag.

      * @return the output for the DocRoot inline tag.

      */

     protected abstract Content getDocRootOutput();

     /**

      * Return the deprecated tag output.

      *

      * @param doc the doc to write deprecated documentation for.

      * @return the output of the deprecated tag.

      */

     protected abstract Content deprecatedTagOutput(Doc doc);

     /**

      * Return the output for a {@literal...} tag.

      *

      * @param tag the tag.

      * @return the output of the taglet.

      */

     protected abstract Content literalTagOutput(Tag tag);

     /**

      * Returns {@link MessageRetriever} for output purposes.

      *

      * @return {@link MessageRetriever} for output purposes.

      */

     protected abstract MessageRetriever getMsgRetriever();

     /**

      * Return the header for the param tags.

      *

      * @param header the header to display.

      * @return the header for the param tags.

      */

     protected abstract Content getParamHeader(String header);

     /**

      * Return the output for param tags.

      *

      * @param paramTag the parameter to document.

      * @param paramName the name of the parameter.

      * @return the output of the param tag.

      */

     protected abstract Content paramTagOutput(ParamTag paramTag,

         String paramName);

     /**

      * Return the output for property tags.

      *

      * @param propertyTag the parameter to document.

      * @param prefix the text with which to prefix the property name.

      * @return the output of the param tag.

      */

     protected abstract Content propertyTagOutput(Tag propertyTag, String prefix);

     /**

      * Return the return tag output.

      *

      * @param returnTag the return tag to output.

      * @return the output of the return tag.

      */

     protected abstract Content returnTagOutput(Tag returnTag);

     /**

      * Return the see tag output.

      *

      * @param seeTags the array of See tags.

      * @return the output of the see tags.

      */

     protected abstract Content seeTagOutput(Doc holder, SeeTag[] seeTags);

     /**

      * Return the output for a simple tag.

      *

      * @param simpleTags the array of simple tags.

      * @return the output of the simple tags.

      */

     protected abstract Content simpleTagOutput(Tag[] simpleTags,

         String header);

     /**

      * Return the output for a simple tag.

      *

      * @param simpleTag the simple tag.

      * @return the output of the simple tag.

      */

     protected abstract Content simpleTagOutput(Tag simpleTag, String header);

     /**

      * Return the header for the throws tag.

      *

      * @return the header for the throws tag.

      */

     protected abstract Content getThrowsHeader();

     /**

      * Return the header for the throws tag.

      *

      * @param throwsTag the throws tag.

      * @return the output of the throws tag.

      */

     protected abstract Content throwsTagOutput(ThrowsTag throwsTag);

     /**

      * Return the output for the throws tag.

      *

      * @param throwsType the throws type.

      * @return the output of the throws type.

      */

     protected abstract Content throwsTagOutput(Type throwsType);

     /**

      * Return the output for the value tag.

      *

      * @param field       the constant field that holds the value tag.

      * @param constantVal the constant value to document.

      * @param includeLink true if we should link the constant text to the

      *                    constant field itself.

      * @return the output of the value tag.

      */

     protected abstract Content valueTagOutput(FieldDoc field,

         String constantVal, boolean includeLink);

     /**

      * Given an output object, append to it the tag documentation for

      * the given member.

      *

      * @param tagletManager the manager that manages the taglets.

      * @param doc the Doc that we are print tags for.

      * @param taglets the taglets to print.

      * @param writer the writer that will generate the output strings.

      * @param output the output buffer to store the output in.

      */

     public static void genTagOuput(TagletManager tagletManager, Doc doc,

             Taglet[] taglets, TagletWriter writer, Content output) {

         tagletManager.checkTags(doc, doc.tags(), false);

         tagletManager.checkTags(doc, doc.inlineTags(), true);

         Content currentOutput = null;

         for (int i = 0; i < taglets.length; i++) {

             currentOutput = null;

             if (doc instanceof ClassDoc && taglets[i] instanceof ParamTaglet) {

                 //The type parameters are documented in a special section away

                 //from the tag info, so skip here.

                 continue;

             }

             if (taglets[i] instanceof DeprecatedTaglet) {

                 //Deprecated information is documented "inline", not in tag info

                 //section.

                 continue;

             }

             try {

                 currentOutput = taglets[i].getTagletOutput(doc, writer);

             } catch (IllegalArgumentException e) {

                 //The taglet does not take a member as an argument.  Let's try

                 //a single tag.

                 Tag[] tags = doc.tags(taglets[i].getName());

                 if (tags.length > 0) {

                     currentOutput = taglets[i].getTagletOutput(tags[0], writer);

                 }

             }

             if (currentOutput != null) {

                 tagletManager.seenCustomTag(taglets[i].getName());

                 output.addContent(currentOutput);

             }

         }

     }

     /**

      * Given an inline tag, return its output.

      * @param tagletManager The taglet manager for the current doclet.

      * @param holderTag The tag this holds this inline tag.  Null if there

      * is no tag that holds it.

      * @param inlineTag The inline tag to be documented.

      * @param tagletWriter The taglet writer to write the output.

      * @return The output of the inline tag.

      */

     public static Content getInlineTagOuput(TagletManager tagletManager,

             Tag holderTag, Tag inlineTag, TagletWriter tagletWriter) {

         Taglet[] definedTags = tagletManager.getInlineCustomTaglets();

         //This is a custom inline tag.

         for (int j = 0; j < definedTags.length; j++) {

             if (("@"+definedTags[j].getName()).equals(inlineTag.name())) {

                 //Given a name of a seen custom tag, remove it from the

                 // set of unseen custom tags.

                 tagletManager.seenCustomTag(definedTags[j].getName());

                 Content output = definedTags[j].getTagletOutput(

                     holderTag != null &&

                         definedTags[j].getName().equals("inheritDoc") ?

                             holderTag : inlineTag, tagletWriter);

                 return output;

             }

         }

         return null;

     }

     /**

      * Converts inline tags and text to TagOutput, expanding the

      * inline tags along the way.  Called wherever text can contain

      * an inline tag, such as in comments or in free-form text arguments

      * to non-inline tags.

      *

      * @param holderTag the tag that holds the documentation.

      * @param tags   array of text tags and inline tags (often alternating)

      *               present in the text of interest for this doc.

      * @return the {@link Content} representing the comments.

      */

     public abstract Content commentTagsToOutput(Tag holderTag, Tag[] tags);

     /**

      * Converts inline tags and text to TagOutput, expanding the

      * inline tags along the way.  Called wherever text can contain

      * an inline tag, such as in comments or in free-form text arguments

      * to non-inline tags.

      *

      * @param holderDoc specific doc where comment resides.

      * @param tags   array of text tags and inline tags (often alternating)

      *               present in the text of interest for this doc.

      * @return the {@link Content} representing the comments.

      */

     public abstract Content commentTagsToOutput(Doc holderDoc, Tag[] tags);

     /**

      * Converts inline tags and text to TagOutput, expanding the

      * inline tags along the way.  Called wherever text can contain

      * an inline tag, such as in comments or in free-form text arguments

      * to non-inline tags.

      *

      * @param holderTag the tag that holds the documentation.

      * @param holderDoc specific doc where comment resides.

      * @param tags   array of text tags and inline tags (often alternating)

      *               present in the text of interest for this doc.

      * @param isFirstSentence true if this is the first sentence.

      * @return the {@link Content} representing the comments.

      */

     public abstract Content commentTagsToOutput(Tag holderTag,

         Doc holderDoc, Tag[] tags, boolean isFirstSentence);

     /**

      * @return an instance of the configuration used for this doclet.

      */

     public abstract Configuration configuration();

 }