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1 /* |
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2 * Copyright 1997-2004 Sun Microsystems, Inc. All Rights Reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Sun designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Sun in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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22 * CA 95054 USA or visit www.sun.com if you need additional information or |
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23 * have any questions. |
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24 */ |
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25 |
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26 package com.sun.tools.javadoc; |
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27 |
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28 import com.sun.javadoc.*; |
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29 |
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30 /** |
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31 * Represents a documentation tag, e.g. @since, @author, @version. |
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32 * Given a tag (e.g. "@since 1.2"), holds tag name (e.g. "@since") |
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33 * and tag text (e.g. "1.2"). TagImpls with structure or which require |
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34 * special processing are handled by subclasses (ParamTagImpl, SeeTagImpl, |
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35 * and ThrowsTagImpl |
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36 * |
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37 * @author Robert Field |
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38 * @author Atul M Dambalkar |
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39 * @author Neal M Gafter |
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40 * @see SeeTagImpl |
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41 * @see ParamTagImpl |
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42 * @see ThrowsTagImpl |
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43 * @see Doc#tags() |
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44 * |
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45 */ |
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46 class TagImpl implements Tag { |
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47 |
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48 protected final String text; |
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49 protected final String name; |
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50 protected final DocImpl holder; |
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51 |
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52 /** |
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53 * Cached first sentence. |
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54 */ |
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55 private Tag[] firstSentence; |
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56 |
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57 /** |
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58 * Cached inline tags. |
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59 */ |
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60 private Tag[] inlineTags; |
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61 |
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62 /** |
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63 * Constructor |
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64 */ |
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65 TagImpl(DocImpl holder, String name, String text) { |
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66 this.holder = holder; |
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67 this.name = name; |
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68 this.text = text; |
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69 } |
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70 |
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71 /** |
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72 * Return the name of this tag. |
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73 */ |
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74 public String name() { |
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75 return name; |
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76 } |
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77 |
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78 /** |
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79 * Return the containing {@link Doc} of this Tag element. |
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80 */ |
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81 public Doc holder() { |
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82 return holder; |
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83 } |
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84 |
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85 /** |
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86 * Return the kind of this tag. |
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87 */ |
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88 public String kind() { |
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89 return name; |
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90 } |
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91 |
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92 /** |
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93 * Return the text of this tag, that is, portion beyond tag name. |
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94 */ |
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95 public String text() { |
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96 return text; |
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97 } |
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98 |
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99 DocEnv docenv() { |
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100 return holder.env; |
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101 } |
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102 |
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103 /** |
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104 * for use by subclasses which have two part tag text. |
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105 */ |
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106 String[] divideAtWhite() { |
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107 String[] sa = new String[2]; |
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108 int len = text.length(); |
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109 // if no white space found |
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110 sa[0] = text; |
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111 sa[1] = ""; |
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112 for (int inx = 0; inx < len; ++inx) { |
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113 char ch = text.charAt(inx); |
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114 if (Character.isWhitespace(ch)) { |
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115 sa[0] = text.substring(0, inx); |
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116 for (; inx < len; ++inx) { |
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117 ch = text.charAt(inx); |
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118 if (!Character.isWhitespace(ch)) { |
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119 sa[1] = text.substring(inx, len); |
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120 break; |
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121 } |
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122 } |
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123 break; |
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124 } |
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125 } |
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126 return sa; |
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127 } |
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128 |
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129 /** |
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130 * convert this object to a string. |
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131 */ |
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132 public String toString() { |
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133 return name + ":" + text; |
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134 } |
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135 |
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136 /** |
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137 * For documentation comment with embedded @link tags, return the array of |
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138 * TagImpls consisting of SeeTagImpl(s) and text containing TagImpl(s). |
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139 * Within a comment string "This is an example of inline tags for a |
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140 * documentation comment {@link Doc {@link Doc commentlabel}}", |
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141 * where inside the inner braces, the first "Doc" carries exctly the same |
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142 * syntax as a SeeTagImpl and the second "commentlabel" is label for the Html |
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143 * Link, will return an array of TagImpl(s) with first element as TagImpl with |
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144 * comment text "This is an example of inline tags for a documentation |
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145 * comment" and second element as SeeTagImpl with referenced class as "Doc" |
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146 * and the label for the Html Link as "commentlabel". |
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147 * |
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148 * @return TagImpl[] Array of tags with inline SeeTagImpls. |
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149 * @see ParamTagImpl |
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150 * @see ThrowsTagImpl |
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151 */ |
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152 public Tag[] inlineTags() { |
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153 if (inlineTags == null) { |
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154 inlineTags = Comment.getInlineTags(holder, text); |
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155 } |
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156 return inlineTags; |
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157 } |
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158 |
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159 /** |
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160 * Return array of tags for the first sentence in the doc comment text. |
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161 */ |
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162 public Tag[] firstSentenceTags() { |
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163 if (firstSentence == null) { |
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164 //Parse all sentences first to avoid duplicate warnings. |
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165 inlineTags(); |
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166 try { |
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167 docenv().setSilent(true); |
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168 firstSentence = Comment.firstSentenceTags(holder, text); |
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169 } finally { |
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170 docenv().setSilent(false); |
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171 } |
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172 } |
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173 return firstSentence; |
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174 } |
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175 |
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176 /** |
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177 * Return the doc item to which this tag is attached. |
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178 * @return the doc item to which this tag is attached. |
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179 */ |
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180 public SourcePosition position() { |
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181 return holder.position(); |
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182 } |
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183 } |