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DocBlockReflection.php
001 <?php
002 /**
003 * Zend Framework (http://framework.zend.com/)
004 *
005 * @link http://github.com/zendframework/zf2 for the canonical source repository
006 * @copyright Copyright (c) 2005-2016 Zend Technologies USA Inc. (http://www.zend.com)
007 * @license http://framework.zend.com/license/new-bsd New BSD License
008 */
009
010 namespace Zend\Code\Reflection;
011
012 use Reflector;
013 use Zend\Code\Reflection\DocBlock\Tag\TagInterface as DocBlockTagInterface;
014 use Zend\Code\Reflection\DocBlock\TagManager as DocBlockTagManager;
015 use Zend\Code\Scanner\DocBlockScanner;
016
017 use function count;
018 use function get_class;
019 use function is_string;
020 use function ltrim;
021 use function method_exists;
022 use function preg_replace;
023 use function sprintf;
024 use function substr_count;
025
026 class DocBlockReflection implements ReflectionInterface
027 {
028 /**
029 * @var Reflector
030 */
031 protected $reflector;
032
033 /**
034 * @var string
035 */
036 protected $docComment;
037
038 /**
039 * @var DocBlockTagManager
040 */
041 protected $tagManager;
042
043 /**
044 * @var int
045 */
046 protected $startLine;
047
048 /**
049 * @var int
050 */
051 protected $endLine;
052
053 /**
054 * @var string
055 */
056 protected $cleanDocComment;
057
058 /**
059 * @var string
060 */
061 protected $longDescription;
062
063 /**
064 * @var string
065 */
066 protected $shortDescription;
067
068 /**
069 * @var array
070 */
071 protected $tags = [];
072
073 /**
074 * @var bool
075 */
076 protected $isReflected = false;
077
078 /**
079 * Export reflection
080 *
081 * Required by the Reflector interface.
082 *
083 * @todo What should this do?
084 * @return void
085 */
086 public static function export()
087 {
088 }
089
090 /**
091 * @param Reflector|string $commentOrReflector
092 * @param null|DocBlockTagManager $tagManager
093 * @throws Exception\InvalidArgumentException
094 */
095 public function __construct($commentOrReflector, DocBlockTagManager $tagManager = null)
096 {
097 if (! $tagManager) {
098 $tagManager = new DocBlockTagManager();
099 $tagManager->initializeDefaultTags();
100 }
101 $this->tagManager = $tagManager;
102
103 if ($commentOrReflector instanceof Reflector) {
104 $this->reflector = $commentOrReflector;
105 if (! method_exists($commentOrReflector, 'getDocComment')) {
106 throw new Exception\InvalidArgumentException('Reflector must contain method "getDocComment"');
107 }
108 /* @var MethodReflection $commentOrReflector */
109 $this->docComment = $commentOrReflector->getDocComment();
110
111 // determine line numbers
112 $lineCount = substr_count($this->docComment, "\n");
113 $this->startLine = $this->reflector->getStartLine() - $lineCount - 1;
114 $this->endLine = $this->reflector->getStartLine() - 1;
115 } elseif (is_string($commentOrReflector)) {
116 $this->docComment = $commentOrReflector;
117 } else {
118 throw new Exception\InvalidArgumentException(sprintf(
119 '%s must have a (string) DocComment or a Reflector in the constructor',
120 get_class($this)
121 ));
122 }
123
124 if ($this->docComment == '') {
125 throw new Exception\InvalidArgumentException('DocComment cannot be empty');
126 }
127
128 $this->reflect();
129 }
130
131 /**
132 * Retrieve contents of DocBlock
133 *
134 * @return string
135 */
136 public function getContents()
137 {
138 $this->reflect();
139
140 return $this->cleanDocComment;
141 }
142
143 /**
144 * Get start line (position) of DocBlock
145 *
146 * @return int
147 */
148 public function getStartLine()
149 {
150 $this->reflect();
151
152 return $this->startLine;
153 }
154
155 /**
156 * Get last line (position) of DocBlock
157 *
158 * @return int
159 */
160 public function getEndLine()
161 {
162 $this->reflect();
163
164 return $this->endLine;
165 }
166
167 /**
168 * Get DocBlock short description
169 *
170 * @return string
171 */
172 public function getShortDescription()
173 {
174 $this->reflect();
175
176 return $this->shortDescription;
177 }
178
179 /**
180 * Get DocBlock long description
181 *
182 * @return string
183 */
184 public function getLongDescription()
185 {
186 $this->reflect();
187
188 return $this->longDescription;
189 }
190
191 /**
192 * Does the DocBlock contain the given annotation tag?
193 *
194 * @param string $name
195 * @return bool
196 */
197 public function hasTag($name)
198 {
199 $this->reflect();
200 foreach ($this->tags as $tag) {
201 if ($tag->getName() == $name) {
202 return true;
203 }
204 }
205
206 return false;
207 }
208
209 /**
210 * Retrieve the given DocBlock tag
211 *
212 * @param string $name
213 * @return DocBlockTagInterface|false
214 */
215 public function getTag($name)
216 {
217 $this->reflect();
218 foreach ($this->tags as $tag) {
219 if ($tag->getName() == $name) {
220 return $tag;
221 }
222 }
223
224 return false;
225 }
226
227 /**
228 * Get all DocBlock annotation tags
229 *
230 * @param string $filter
231 * @return DocBlockTagInterface[]
232 */
233 public function getTags($filter = null)
234 {
235 $this->reflect();
236 if ($filter === null || ! is_string($filter)) {
237 return $this->tags;
238 }
239
240 $returnTags = [];
241 foreach ($this->tags as $tag) {
242 if ($tag->getName() == $filter) {
243 $returnTags[] = $tag;
244 }
245 }
246
247 return $returnTags;
248 }
249
250 /**
251 * Parse the DocBlock
252 *
253 * @return void
254 */
255 protected function reflect()
256 {
257 if ($this->isReflected) {
258 return;
259 }
260
261 $docComment = preg_replace('#[ ]{0,1}\*/$#', '', $this->docComment);
262
263 // create a clean docComment
264 $this->cleanDocComment = preg_replace("#[ \t]*(?:/\*\*|\*/|\*)[ ]{0,1}(.*)?#", '$1', $docComment);
265
266 // @todo should be changed to remove first and last empty line
267 $this->cleanDocComment = ltrim($this->cleanDocComment, "\r\n");
268
269 $scanner = new DocBlockScanner($docComment);
270 $this->shortDescription = ltrim($scanner->getShortDescription());
271 $this->longDescription = ltrim($scanner->getLongDescription());
272
273 foreach ($scanner->getTags() as $tag) {
274 $this->tags[] = $this->tagManager->createTag(ltrim($tag['name'], '@'), ltrim($tag['value']));
275 }
276
277 $this->isReflected = true;
278 }
279
280 /**
281 * @return string
282 */
283 public function toString()
284 {
285 $str = 'DocBlock [ /* DocBlock */ ] {' . "\n\n";
286 $str .= ' - Tags [' . count($this->tags) . '] {' . "\n";
287
288 foreach ($this->tags as $tag) {
289 $str .= ' ' . $tag;
290 }
291
292 $str .= ' }' . "\n";
293 $str .= '}' . "\n";
294
295 return $str;
296 }
297
298 /**
299 * Serialize to string
300 *
301 * Required by the Reflector interface
302 *
303 * @return string
304 */
305 public function __toString()
306 {
307 return $this->toString();
308 }
309 }
310