Mercurial > jdk8-mips64-public > langtools / file comparison

comparison: src/share/classes/com/sun/tools/javadoc/TagImpl.java

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

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1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.tools.javadoc;
27
28 import com.sun.javadoc.*;
29
30 /**
31 * Represents a documentation tag, e.g. @since, @author, @version.
32 * Given a tag (e.g. "@since 1.2"), holds tag name (e.g. "@since")
33 * and tag text (e.g. "1.2"). TagImpls with structure or which require
34 * special processing are handled by subclasses (ParamTagImpl, SeeTagImpl,
35 * and ThrowsTagImpl
36 *
37 * <p><b>This is NOT part of any supported API.
38 * If you write code that depends on this, you do so at your own risk.
39 * This code and its internal interfaces are subject to change or
40 * deletion without notice.</b>
41 *
42 * @author Robert Field
43 * @author Atul M Dambalkar
44 * @author Neal M Gafter
45 * @see SeeTagImpl
46 * @see ParamTagImpl
47 * @see ThrowsTagImpl
48 * @see Doc#tags()
49 *
50 */
51 class TagImpl implements Tag {
52
53 protected final String text;
54 protected final String name;
55 protected final DocImpl holder;
56
57 /**
58 * Cached first sentence.
59 */
60 private Tag[] firstSentence;
61
62 /**
63 * Cached inline tags.
64 */
65 private Tag[] inlineTags;
66
67 /**
68 * Constructor
69 */
70 TagImpl(DocImpl holder, String name, String text) {
71 this.holder = holder;
72 this.name = name;
73 this.text = text;
74 }
75
76 /**
77 * Return the name of this tag.
78 */
79 public String name() {
80 return name;
81 }
82
83 /**
84 * Return the containing {@link Doc} of this Tag element.
85 */
86 public Doc holder() {
87 return holder;
88 }
89
90 /**
91 * Return the kind of this tag.
92 */
93 public String kind() {
94 return name;
95 }
96
97 /**
98 * Return the text of this tag, that is, portion beyond tag name.
99 */
100 public String text() {
101 return text;
102 }
103
104 DocEnv docenv() {
105 return holder.env;
106 }
107
108 /**
109 * for use by subclasses which have two part tag text.
110 */
111 String[] divideAtWhite() {
112 String[] sa = new String[2];
113 int len = text.length();
114 // if no white space found
115 sa[0] = text;
116 sa[1] = "";
117 for (int inx = 0; inx < len; ++inx) {
118 char ch = text.charAt(inx);
119 if (Character.isWhitespace(ch)) {
120 sa[0] = text.substring(0, inx);
121 for (; inx < len; ++inx) {
122 ch = text.charAt(inx);
123 if (!Character.isWhitespace(ch)) {
124 sa[1] = text.substring(inx, len);
125 break;
126 }
127 }
128 break;
129 }
130 }
131 return sa;
132 }
133
134 /**
135 * convert this object to a string.
136 */
137 public String toString() {
138 return name + ":" + text;
139 }
140
141 /**
142 * For documentation comment with embedded @link tags, return the array of
143 * TagImpls consisting of SeeTagImpl(s) and text containing TagImpl(s).
144 * Within a comment string "This is an example of inline tags for a
145 * documentation comment {@link Doc {@link Doc commentlabel}}",
146 * where inside the inner braces, the first "Doc" carries exctly the same
147 * syntax as a SeeTagImpl and the second "commentlabel" is label for the Html
148 * Link, will return an array of TagImpl(s) with first element as TagImpl with
149 * comment text "This is an example of inline tags for a documentation
150 * comment" and second element as SeeTagImpl with referenced class as "Doc"
151 * and the label for the Html Link as "commentlabel".
152 *
153 * @return TagImpl[] Array of tags with inline SeeTagImpls.
154 * @see ParamTagImpl
155 * @see ThrowsTagImpl
156 */
157 public Tag[] inlineTags() {
158 if (inlineTags == null) {
159 inlineTags = Comment.getInlineTags(holder, text);
160 }
161 return inlineTags;
162 }
163
164 /**
165 * Return array of tags for the first sentence in the doc comment text.
166 */
167 public Tag[] firstSentenceTags() {
168 if (firstSentence == null) {
169 //Parse all sentences first to avoid duplicate warnings.
170 inlineTags();
171 try {
172 docenv().setSilent(true);
173 firstSentence = Comment.firstSentenceTags(holder, text);
174 } finally {
175 docenv().setSilent(false);
176 }
177 }
178 return firstSentence;
179 }
180
181 /**
182 * Return the doc item to which this tag is attached.
183 * @return the doc item to which this tag is attached.
184 */
185 public SourcePosition position() {
186 return holder.position();
187 }
188 }

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