jdk8-mips64-public/langtools: src/share/classes/com/sun/tools/doclets/internal/toolkit/taglets/ValueTaglet.java@93012e2a5d1d (annotated)

src/share/classes/com/sun/tools/doclets/internal/toolkit/taglets/ValueTaglet.java@93012e2a5d1d (annotated)

src/share/classes/com/sun/tools/doclets/internal/toolkit/taglets/ValueTaglet.java

Sat, 07 Nov 2020 10:30:02 +0800

author: aoqi
date: Sat, 07 Nov 2020 10:30:02 +0800
changeset 3938: 93012e2a5d1d
parent 2525: 2eb010b6cb22
permissions: -rw-r--r--

Added tag mips-jdk8u275-b01 for changeset eb6ee6a5f2fe

 /*
  * Copyright (c) 2001, 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.doclets.internal.toolkit.taglets;
 import java.util.*;
 import com.sun.javadoc.*;
 import com.sun.tools.doclets.internal.toolkit.Configuration;
 import com.sun.tools.doclets.internal.toolkit.Content;
 import com.sun.tools.doclets.internal.toolkit.util.*;
 /**
  * An inline Taglet representing the value tag. This tag should only be used with
  * constant fields that have a value.  It is used to access the value of constant
  * fields.  This inline tag has an optional field name parameter.  If the name is
  * specified, the constant value is retrieved from the specified field.  A link
  * is also created to the specified field.  If a name is not specified, the value
  * is retrieved for the field that the inline tag appears on.  The name is specifed
  * in the following format:  [fully qualified class name]#[constant field name].
  *
  *  <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 Jamie Ho
  * @since 1.4
  */
 public class ValueTaglet extends BaseInlineTaglet {
     /**
      * Construct a new ValueTaglet.
      */
     public ValueTaglet() {
         name = "value";
     }
     /**
      * Will return false because this inline tag may
      * only appear in Fields.
      * @return false since this is not a method.
      */
     public boolean inMethod() {
         return true;
     }
     /**
      * Will return false because this inline tag may
      * only appear in Fields.
      * @return false since this is not a method.
      */
     public boolean inConstructor() {
         return true;
     }
     /**
      * Will return false because this inline tag may
      * only appear in Fields.
      * @return false since this is not a method.
      */
     public boolean inOverview() {
         return true;
     }
     /**
      * Will return false because this inline tag may
      * only appear in Fields.
      * @return false since this is not a method.
      */
     public boolean inPackage() {
         return true;
     }
     /**
      * Will return false because this inline tag may
      * only appear in Fields.
      * @return false since this is not a method.
      */
     public boolean inType() {
         return true;
     }
     /**
      * Given the name of the field, return the corresponding FieldDoc. Return null
      * due to invalid use of value tag if the name is null or empty string and if
      * the value tag is not used on a field.
      *
      * @param config the current configuration of the doclet.
      * @param tag the value tag.
      * @param name the name of the field to search for.  The name should be in
      * {@code <qualified class name>#<field name>} format. If the class name is omitted,
      * it is assumed that the field is in the current class.
      *
      * @return the corresponding FieldDoc. If the name is null or empty string,
      * return field that the value tag was used in. Return null if the name is null
      * or empty string and if the value tag is not used on a field.
      */
     private FieldDoc getFieldDoc(Configuration config, Tag tag, String name) {
         if (name == null || name.length() == 0) {
             //Base case: no label.
             if (tag.holder() instanceof FieldDoc) {
                 return (FieldDoc) tag.holder();
             } else {
                 // If the value tag does not specify a parameter which is a valid field and
                 // it is not used within the comments of a valid field, return null.
                  return null;
             }
         }
         StringTokenizer st = new StringTokenizer(name, "#");
         String memberName = null;
         ClassDoc cd = null;
         if (st.countTokens() == 1) {
             //Case 2:  @value in same class.
             Doc holder = tag.holder();
             if (holder instanceof MemberDoc) {
                 cd = ((MemberDoc) holder).containingClass();
             } else if (holder instanceof ClassDoc) {
                 cd = (ClassDoc) holder;
             }
             memberName = st.nextToken();
         } else {
             //Case 3: @value in different class.
             cd = config.root.classNamed(st.nextToken());
             memberName = st.nextToken();
         }
         if (cd == null) {
             return null;
         }
         FieldDoc[] fields = cd.fields();
         for (int i = 0; i < fields.length; i++) {
             if (fields[i].name().equals(memberName)) {
                 return fields[i];
             }
         }
         return null;
     }
     /**
      * {@inheritDoc}
      */
     public Content getTagletOutput(Tag tag, TagletWriter writer) {
         FieldDoc field = getFieldDoc(
             writer.configuration(), tag, tag.text());
         if (field == null) {
             if (tag.text().isEmpty()) {
                 //Invalid use of @value
                 writer.getMsgRetriever().warning(tag.holder().position(),
                         "doclet.value_tag_invalid_use");
             } else {
                 //Reference is unknown.
                 writer.getMsgRetriever().warning(tag.holder().position(),
                         "doclet.value_tag_invalid_reference", tag.text());
             }
         } else if (field.constantValue() != null) {
             return writer.valueTagOutput(field,
                 field.constantValueExpression(),
                 ! field.equals(tag.holder()));
         } else {
             //Referenced field is not a constant.
             writer.getMsgRetriever().warning(tag.holder().position(),
                 "doclet.value_tag_invalid_constant", field.name());
         }
         return writer.getOutputInstance();
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

src/share/classes/com/sun/tools/doclets/internal/toolkit/taglets/ValueTaglet.java@93012e2a5d1d (annotated)

src/share/classes/com/sun/tools/doclets/internal/toolkit/taglets/ValueTaglet.java