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

Wed, 27 Apr 2016 01:34:52 +0800

author
aoqi
date
Wed, 27 Apr 2016 01:34:52 +0800
changeset 0
959103a6100f
child 2525
2eb010b6cb22
permissions
-rw-r--r--

Initial load
http://hg.openjdk.java.net/jdk8u/jdk8u/langtools/
changeset: 2573:53ca196be1ae
tag: jdk8u25-b17

aoqi@0 1 /*
aoqi@0 2 * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0 4 *
aoqi@0 5 * This code is free software; you can redistribute it and/or modify it
aoqi@0 6 * under the terms of the GNU General Public License version 2 only, as
aoqi@0 7 * published by the Free Software Foundation. Oracle designates this
aoqi@0 8 * particular file as subject to the "Classpath" exception as provided
aoqi@0 9 * by Oracle in the LICENSE file that accompanied this code.
aoqi@0 10 *
aoqi@0 11 * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0 14 * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0 15 * accompanied this code).
aoqi@0 16 *
aoqi@0 17 * You should have received a copy of the GNU General Public License version
aoqi@0 18 * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0 20 *
aoqi@0 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0 22 * or visit www.oracle.com if you need additional information or have any
aoqi@0 23 * questions.
aoqi@0 24 */
aoqi@0 25
aoqi@0 26 package com.sun.tools.doclets.internal.toolkit.taglets;
aoqi@0 27
aoqi@0 28 import com.sun.javadoc.*;
aoqi@0 29 import com.sun.tools.doclets.internal.toolkit.Content;
aoqi@0 30 import com.sun.tools.doclets.internal.toolkit.util.*;
aoqi@0 31
aoqi@0 32 /**
aoqi@0 33 * A taglet that represents the @return tag.
aoqi@0 34 *
aoqi@0 35 * <p><b>This is NOT part of any supported API.
aoqi@0 36 * If you write code that depends on this, you do so at your own risk.
aoqi@0 37 * This code and its internal interfaces are subject to change or
aoqi@0 38 * deletion without notice.</b>
aoqi@0 39 *
aoqi@0 40 * @author Jamie Ho
aoqi@0 41 * @since 1.4
aoqi@0 42 */
aoqi@0 43 public class ReturnTaglet extends BaseExecutableMemberTaglet
aoqi@0 44 implements InheritableTaglet {
aoqi@0 45
aoqi@0 46 public ReturnTaglet() {
aoqi@0 47 name = "return";
aoqi@0 48 }
aoqi@0 49
aoqi@0 50 /**
aoqi@0 51 * {@inheritDoc}
aoqi@0 52 */
aoqi@0 53 public void inherit(DocFinder.Input input, DocFinder.Output output) {
aoqi@0 54 Tag[] tags = input.element.tags("return");
aoqi@0 55 if (tags.length > 0) {
aoqi@0 56 output.holder = input.element;
aoqi@0 57 output.holderTag = tags[0];
aoqi@0 58 output.inlineTags = input.isFirstSentence ?
aoqi@0 59 tags[0].firstSentenceTags() : tags[0].inlineTags();
aoqi@0 60 }
aoqi@0 61 }
aoqi@0 62
aoqi@0 63 /**
aoqi@0 64 * Return true if this <code>Taglet</code>
aoqi@0 65 * is used in constructor documentation.
aoqi@0 66 * @return true if this <code>Taglet</code>
aoqi@0 67 * is used in constructor documentation and false
aoqi@0 68 * otherwise.
aoqi@0 69 */
aoqi@0 70 public boolean inConstructor() {
aoqi@0 71 return false;
aoqi@0 72 }
aoqi@0 73
aoqi@0 74 /**
aoqi@0 75 * {@inheritDoc}
aoqi@0 76 */
aoqi@0 77 public Content getTagletOutput(Doc holder, TagletWriter writer) {
aoqi@0 78 Type returnType = ((MethodDoc) holder).returnType();
aoqi@0 79 Tag[] tags = holder.tags(name);
aoqi@0 80
aoqi@0 81 //Make sure we are not using @return tag on method with void return type.
aoqi@0 82 if (returnType.isPrimitive() && returnType.typeName().equals("void")) {
aoqi@0 83 if (tags.length > 0) {
aoqi@0 84 writer.getMsgRetriever().warning(holder.position(),
aoqi@0 85 "doclet.Return_tag_on_void_method");
aoqi@0 86 }
aoqi@0 87 return null;
aoqi@0 88 }
aoqi@0 89 //Inherit @return tag if necessary.
aoqi@0 90 if (tags.length == 0) {
aoqi@0 91 DocFinder.Output inheritedDoc =
aoqi@0 92 DocFinder.search(new DocFinder.Input((MethodDoc) holder, this));
aoqi@0 93 tags = inheritedDoc.holderTag == null ? tags : new Tag[] {inheritedDoc.holderTag};
aoqi@0 94 }
aoqi@0 95 return tags.length > 0 ? writer.returnTagOutput(tags[0]) : null;
aoqi@0 96 }
aoqi@0 97 }

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