jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/javadoc/Comment.java@2eb010b6cb22 (annotated)

src/share/classes/com/sun/tools/javadoc/Comment.java@2eb010b6cb22 (annotated)

src/share/classes/com/sun/tools/javadoc/Comment.java

Thu, 31 Aug 2017 15:17:03 +0800

author: aoqi
date: Thu, 31 Aug 2017 15:17:03 +0800
changeset 2525: 2eb010b6cb22
parent 1722: 38c4bade0ec1
parent 0: 959103a6100f
permissions: -rw-r--r--

merge

 /*
  * Copyright (c) 1997, 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
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */
 package com.sun.tools.javadoc;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import com.sun.javadoc.*;
 import com.sun.tools.javac.util.ListBuffer;
 /**
  * Comment contains all information in comment part.
  *      It allows users to get first sentence of this comment, get
  *      comment for different tags...
  *
  *  <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>
  *
  * @author Kaiyang Liu (original)
  * @author Robert Field (rewrite)
  * @author Atul M Dambalkar
  * @author Neal Gafter (rewrite)
  */
 class Comment {
     /**
      * sorted comments with different tags.
      */
     private final ListBuffer<Tag> tagList = new ListBuffer<Tag>();
     /**
      * text minus any tags.
      */
     private String text;
     /**
      * Doc environment
      */
     private final DocEnv docenv;
     /**
      * constructor of Comment.
      */
     Comment(final DocImpl holder, final String commentString) {
         this.docenv = holder.env;
         /**
          * Separate the comment into the text part and zero to N tags.
          * Simple state machine is in one of three states:
          * <pre>
          * IN_TEXT: parsing the comment text or tag text.
          * TAG_NAME: parsing the name of a tag.
          * TAG_GAP: skipping through the gap between the tag name and
          * the tag text.
          * </pre>
          */
         @SuppressWarnings("fallthrough")
         class CommentStringParser {
             /**
              * The entry point to the comment string parser
              */
             void parseCommentStateMachine() {
                 final int IN_TEXT = 1;
                 final int TAG_GAP = 2;
                 final int TAG_NAME = 3;
                 int state = TAG_GAP;
                 boolean newLine = true;
                 String tagName = null;
                 int tagStart = 0;
                 int textStart = 0;
                 int lastNonWhite = -1;
                 int len = commentString.length();
                 for (int inx = 0; inx < len; ++inx) {
                     char ch = commentString.charAt(inx);
                     boolean isWhite = Character.isWhitespace(ch);
                     switch (state)  {
                         case TAG_NAME:
                             if (isWhite) {
                                 tagName = commentString.substring(tagStart, inx);
                                 state = TAG_GAP;
                             }
                             break;
                         case TAG_GAP:
                             if (isWhite) {
                                 break;
                             }
                             textStart = inx;
                             state = IN_TEXT;
                             /* fall thru */
                         case IN_TEXT:
                             if (newLine && ch == '@') {
                                 parseCommentComponent(tagName, textStart,
                                                       lastNonWhite+1);
                                 tagStart = inx;
                                 state = TAG_NAME;
                             }
                             break;
                     }
                     if (ch == '\n') {
                         newLine = true;
                     } else if (!isWhite) {
                         lastNonWhite = inx;
                         newLine = false;
                     }
                 }
                 // Finish what's currently being processed
                 switch (state)  {
                     case TAG_NAME:
                         tagName = commentString.substring(tagStart, len);
                         /* fall thru */
                     case TAG_GAP:
                         textStart = len;
                         /* fall thru */
                     case IN_TEXT:
                         parseCommentComponent(tagName, textStart, lastNonWhite+1);
                         break;
                 }
             }
             /**
              * Save away the last parsed item.
              */
             void parseCommentComponent(String tagName,
                                        int from, int upto) {
                 String tx = upto <= from ? "" : commentString.substring(from, upto);
                 if (tagName == null) {
                     text = tx;
                 } else {
                     TagImpl tag;
                     if (tagName.equals("@exception") || tagName.equals("@throws")) {
                         warnIfEmpty(tagName, tx);
                         tag = new ThrowsTagImpl(holder, tagName, tx);
                     } else if (tagName.equals("@param")) {
                         warnIfEmpty(tagName, tx);
                         tag = new ParamTagImpl(holder, tagName, tx);
                     } else if (tagName.equals("@see")) {
                         warnIfEmpty(tagName, tx);
                         tag = new SeeTagImpl(holder, tagName, tx);
                     } else if (tagName.equals("@serialField")) {
                         warnIfEmpty(tagName, tx);
                         tag = new SerialFieldTagImpl(holder, tagName, tx);
                     } else if (tagName.equals("@return")) {
                         warnIfEmpty(tagName, tx);
                         tag = new TagImpl(holder, tagName, tx);
                     } else if (tagName.equals("@author")) {
                         warnIfEmpty(tagName, tx);
                         tag = new TagImpl(holder, tagName, tx);
                     } else if (tagName.equals("@version")) {
                         warnIfEmpty(tagName, tx);
                         tag = new TagImpl(holder, tagName, tx);
                     } else {
                         tag = new TagImpl(holder, tagName, tx);
                     }
                     tagList.append(tag);
                 }
             }
             void warnIfEmpty(String tagName, String tx) {
                 if (tx.length() == 0) {
                     docenv.warning(holder, "tag.tag_has_no_arguments", tagName);
                 }
             }
         }
         new CommentStringParser().parseCommentStateMachine();
     }
     /**
      * Return the text of the comment.
      */
     String commentText() {
         return text;
     }
     /**
      * Return all tags in this comment.
      */
     Tag[] tags() {
         return tagList.toArray(new Tag[tagList.length()]);
     }
     /**
      * Return tags of the specified kind in this comment.
      */
     Tag[] tags(String tagname) {
         ListBuffer<Tag> found = new ListBuffer<Tag>();
         String target = tagname;
         if (target.charAt(0) != '@') {
             target = "@" + target;
         }
         for (Tag tag : tagList) {
             if (tag.kind().equals(target)) {
                 found.append(tag);
             }
         }
         return found.toArray(new Tag[found.length()]);
     }
     /**
      * Return throws tags in this comment.
      */
     ThrowsTag[] throwsTags() {
         ListBuffer<ThrowsTag> found = new ListBuffer<ThrowsTag>();
         for (Tag next : tagList) {
             if (next instanceof ThrowsTag) {
                 found.append((ThrowsTag)next);
             }
         }
         return found.toArray(new ThrowsTag[found.length()]);
     }
     /**
      * Return param tags (excluding type param tags) in this comment.
      */
     ParamTag[] paramTags() {
         return paramTags(false);
     }
     /**
      * Return type param tags in this comment.
      */
     ParamTag[] typeParamTags() {
         return paramTags(true);
     }
     /**
      * Return param tags in this comment.  If typeParams is true
      * include only type param tags, otherwise include only ordinary
      * param tags.
      */
     private ParamTag[] paramTags(boolean typeParams) {
         ListBuffer<ParamTag> found = new ListBuffer<ParamTag>();
         for (Tag next : tagList) {
             if (next instanceof ParamTag) {
                 ParamTag p = (ParamTag)next;
                 if (typeParams == p.isTypeParameter()) {
                     found.append(p);
                 }
             }
         }
         return found.toArray(new ParamTag[found.length()]);
     }
     /**
      * Return see also tags in this comment.
      */
     SeeTag[] seeTags() {
         ListBuffer<SeeTag> found = new ListBuffer<SeeTag>();
         for (Tag next : tagList) {
             if (next instanceof SeeTag) {
                 found.append((SeeTag)next);
             }
         }
         return found.toArray(new SeeTag[found.length()]);
     }
     /**
      * Return serialField tags in this comment.
      */
     SerialFieldTag[] serialFieldTags() {
         ListBuffer<SerialFieldTag> found = new ListBuffer<SerialFieldTag>();
         for (Tag next : tagList) {
             if (next instanceof SerialFieldTag) {
                 found.append((SerialFieldTag)next);
             }
         }
         return found.toArray(new SerialFieldTag[found.length()]);
     }
     /**
      * Return array of tags with text and inline See Tags for a Doc comment.
      */
     static Tag[] getInlineTags(DocImpl holder, String inlinetext) {
         ListBuffer<Tag> taglist = new ListBuffer<Tag>();
         int delimend = 0, textstart = 0, len = inlinetext.length();
         boolean inPre = false;
         DocEnv docenv = holder.env;
         if (len == 0) {
             return taglist.toArray(new Tag[taglist.length()]);
         }
         while (true) {
             int linkstart;
             if ((linkstart = inlineTagFound(holder, inlinetext,
                                             textstart)) == -1) {
                 taglist.append(new TagImpl(holder, "Text",
                                            inlinetext.substring(textstart)));
                 break;
             } else {
                 inPre = scanForPre(inlinetext, textstart, linkstart, inPre);
                 int seetextstart = linkstart;
                 for (int i = linkstart; i < inlinetext.length(); i++) {
                     char c = inlinetext.charAt(i);
                     if (Character.isWhitespace(c) ||
                         c == '}') {
                         seetextstart = i;
                         break;
                      }
                 }
                 String linkName = inlinetext.substring(linkstart+2, seetextstart);
                 if (!(inPre && (linkName.equals("code") || linkName.equals("literal")))) {
                     //Move past the white space after the inline tag name.
                     while (Character.isWhitespace(inlinetext.
                                                       charAt(seetextstart))) {
                         if (inlinetext.length() <= seetextstart) {
                             taglist.append(new TagImpl(holder, "Text",
                                                        inlinetext.substring(textstart, seetextstart)));
                             docenv.warning(holder,
                                            "tag.Improper_Use_Of_Link_Tag",
                                            inlinetext);
                             return taglist.toArray(new Tag[taglist.length()]);
                         } else {
                             seetextstart++;
                         }
                     }
                 }
                 taglist.append(new TagImpl(holder, "Text",
                                            inlinetext.substring(textstart, linkstart)));
                 textstart = seetextstart;   // this text is actually seetag
                 if ((delimend = findInlineTagDelim(inlinetext, textstart)) == -1) {
                     //Missing closing '}' character.
                     // store the text as it is with the {@link.
                     taglist.append(new TagImpl(holder, "Text",
                                                inlinetext.substring(textstart)));
                     docenv.warning(holder,
                                    "tag.End_delimiter_missing_for_possible_SeeTag",
                                    inlinetext);
                     return taglist.toArray(new Tag[taglist.length()]);
                 } else {
                     //Found closing '}' character.
                     if (linkName.equals("see")
                            || linkName.equals("link")
                            || linkName.equals("linkplain")) {
                         taglist.append( new SeeTagImpl(holder, "@" + linkName,
                               inlinetext.substring(textstart, delimend)));
                     } else {
                         taglist.append( new TagImpl(holder, "@" + linkName,
                               inlinetext.substring(textstart, delimend)));
                     }
                     textstart = delimend + 1;
                 }
             }
             if (textstart == inlinetext.length()) {
                 break;
             }
         }
         return taglist.toArray(new Tag[taglist.length()]);
     }
     /** regex for case-insensitive match for {@literal <pre> } and  {@literal </pre> }. */
     private static final Pattern prePat = Pattern.compile("(?i)<(/?)pre>");
     private static boolean scanForPre(String inlinetext, int start, int end, boolean inPre) {
         Matcher m = prePat.matcher(inlinetext).region(start, end);
         while (m.find()) {
             inPre = m.group(1).isEmpty();
         }
         return inPre;
     }
     /**
      * Recursively find the index of the closing '}' character for an inline tag
      * and return it.  If it can't be found, return -1.
      * @param inlineText the text to search in.
      * @param searchStart the index of the place to start searching at.
      * @return the index of the closing '}' character for an inline tag.
      * If it can't be found, return -1.
      */
     private static int findInlineTagDelim(String inlineText, int searchStart) {
         int delimEnd, nestedOpenBrace;
         if ((delimEnd = inlineText.indexOf("}", searchStart)) == -1) {
             return -1;
         } else if (((nestedOpenBrace = inlineText.indexOf("{", searchStart)) != -1) &&
             nestedOpenBrace < delimEnd){
             //Found a nested open brace.
             int nestedCloseBrace = findInlineTagDelim(inlineText, nestedOpenBrace + 1);
             return (nestedCloseBrace != -1) ?
                 findInlineTagDelim(inlineText, nestedCloseBrace + 1) :
                 -1;
         } else {
             return delimEnd;
         }
     }
     /**
      * Recursively search for the characters '{', '@', followed by
      * name of inline tag and white space,
      * if found
      *    return the index of the text following the white space.
      * else
      *    return -1.
      */
     private static int inlineTagFound(DocImpl holder, String inlinetext, int start) {
         DocEnv docenv = holder.env;
         int linkstart = inlinetext.indexOf("{@", start);
         if (start == inlinetext.length() || linkstart == -1) {
             return -1;
         } else if (inlinetext.indexOf('}', linkstart) == -1) {
             //Missing '}'.
             docenv.warning(holder, "tag.Improper_Use_Of_Link_Tag",
                     inlinetext.substring(linkstart, inlinetext.length()));
             return -1;
         } else {
             return linkstart;
         }
     }
     /**
      * Return array of tags for the locale specific first sentence in the text.
      */
     static Tag[] firstSentenceTags(DocImpl holder, String text) {
         DocLocale doclocale = holder.env.doclocale;
         return getInlineTags(holder,
                              doclocale.localeSpecificFirstSentence(holder, text));
     }
     /**
      * Return text for this Doc comment.
      */
     @Override
     public String toString() {
         return text;
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/javadoc/Comment.java@2eb010b6cb22 (annotated)

src/share/classes/com/sun/tools/javadoc/Comment.java