Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
1 | <?php |
||
14 | class DocDescriptionHelper |
||
15 | { |
||
16 | /** |
||
17 | * The php code sniffer file. |
||
18 | * |
||
19 | * @var File |
||
20 | */ |
||
21 | private $file; |
||
22 | |||
23 | /** |
||
24 | * The doc comment helper. |
||
25 | * |
||
26 | * @var DocHelper |
||
27 | */ |
||
28 | private $docHelper; |
||
29 | |||
30 | /** |
||
31 | * The token stack of the cs file. |
||
32 | * |
||
33 | * @var array |
||
34 | */ |
||
35 | private $tokens; |
||
36 | |||
37 | /** |
||
38 | * The doc comment summary helper. |
||
39 | * |
||
40 | * @var DocSummaryHelper |
||
41 | */ |
||
42 | private $summaryHelper; |
||
43 | |||
44 | /** |
||
45 | * Indicator if a description is required. |
||
46 | * |
||
47 | * @var bool |
||
48 | */ |
||
49 | private $descriptionRequired; |
||
50 | |||
51 | /** |
||
52 | * DocSummaryHelper constructor. |
||
53 | * |
||
54 | * @param File $file The php cs file |
||
55 | * @param DocHelper $docHelper The doc comment helper |
||
56 | * @param DocSummaryHelper $summaryHelper The doc comment summary helper |
||
57 | */ |
||
58 | 109 | public function __construct(File $file, DocHelper $docHelper, DocSummaryHelper $summaryHelper) |
|
65 | |||
66 | /** |
||
67 | * Checks for comment description. |
||
68 | * |
||
69 | * @param bool $descriptionRequired Indicator if the description is required. |
||
70 | * |
||
71 | * @return void |
||
72 | */ |
||
73 | 101 | public function checkCommentDescription($descriptionRequired) |
|
144 | |||
145 | /** |
||
146 | * Checks if the description starts with a capital letter. |
||
147 | * |
||
148 | * @param int $descriptionStartPtr Pointer to the start of the description. |
||
149 | * |
||
150 | * @return void |
||
151 | */ |
||
152 | 86 | View Code Duplication | private function checkCommentDescriptionUcFirst($descriptionStartPtr) |
172 | |||
173 | /** |
||
174 | * Checks the line length of each line of the comment description. |
||
175 | * |
||
176 | * @param int $descriptionStartPtr Pointer to the start of the description. |
||
177 | * @param int $descriptionEndPtr Pointer to the end of the description. |
||
178 | * |
||
179 | * @return void |
||
180 | */ |
||
181 | 86 | private function checkCommentDescriptionLineLength($descriptionStartPtr, $descriptionEndPtr) |
|
208 | |||
209 | /** |
||
210 | * Returns pointer to the end of the description. |
||
211 | * |
||
212 | * @return int Pointer to the end of the description or false |
||
213 | */ |
||
214 | 86 | View Code Duplication | private function getCommentDescriptionEndPointer() |
239 | |||
240 | /** |
||
241 | * Returns pointer to the start of the long description or false if not found. |
||
242 | * |
||
243 | * @return int Pointer to the start of the description or -1 |
||
244 | */ |
||
245 | 97 | View Code Duplication | private function getCommentDescriptionStartPointer() |
270 | |||
271 | /** |
||
272 | * Adds error when description is not found. |
||
273 | * |
||
274 | * @param int $summaryPtr Pointer to summary token. |
||
275 | * |
||
276 | * @return void |
||
277 | */ |
||
278 | 11 | private function addDescriptionNotFoundError($summaryPtr) |
|
288 | |||
289 | /** |
||
290 | * Fixes no line after description. |
||
291 | * |
||
292 | * @return void |
||
293 | */ |
||
294 | 8 | View Code Duplication | private function fixNoLineAfterDescription() |
308 | |||
309 | /** |
||
310 | * Fixes much lines after description. |
||
311 | * |
||
312 | * @param int $startLine Line to start removing |
||
313 | * @param int $endLine Line to end removing |
||
314 | * |
||
315 | * @return void |
||
316 | */ |
||
317 | 8 | private function fixMuchLinesAfterDescription($startLine, $endLine) |
|
325 | |||
326 | /** |
||
327 | * Fixes the description uc first. |
||
328 | * |
||
329 | * @param int $descriptionStartPtr Pointer to the description start |
||
330 | * |
||
331 | * @return void |
||
332 | */ |
||
333 | 4 | View Code Duplication | private function fixDescriptionUcFirst($descriptionStartPtr) |
346 | } |
||
347 |
If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:
If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue.