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:
Complex classes like SiteMapA often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use SiteMapA, and based on these observations, apply Extract Interface, too.
1 | <?php |
||
13 | abstract class SiteMapA extends BaseObject { |
||
14 | /** |
||
15 | * the base regex for the current map |
||
16 | * @todo this needs to be deprecated in favour of regexes of the parent module |
||
17 | * @var string |
||
18 | */ |
||
19 | private $aMaps = array(); |
||
20 | /** |
||
21 | * @var ModuleMap |
||
22 | */ |
||
23 | private $oCurrentModuleMap; |
||
24 | |||
25 | public function __construct() {} |
||
26 | |||
27 | /** |
||
28 | * @return string |
||
|
|||
29 | */ |
||
30 | 1 | public function getBaseRegex() { |
|
31 | 1 | $oModuleMap = $this->getCurrentModuleMap(); |
|
32 | 1 | if (ModuleMap::isValid($oModuleMap)) { |
|
33 | return (string)$oModuleMap->getRegex(); |
||
34 | } |
||
35 | 1 | return null; |
|
36 | } |
||
37 | |||
38 | /** |
||
39 | * |
||
40 | * @param string $sRegex |
||
41 | * @param string $sPath |
||
42 | * @returns MappingA |
||
43 | */ |
||
44 | 2 | View Code Duplication | public function addMap($sRegex, $sPath) { |
45 | 2 | $oModuleMap = $this->getCurrentModuleMap(); |
|
46 | |||
47 | 2 | if (MappingA::isValid($oModuleMap)) { |
|
48 | 1 | $sRegex = $oModuleMap->getRegex() . $sRegex; |
|
49 | } |
||
50 | |||
51 | 2 | if (!array_key_exists($sRegex, $this->aMaps)) { |
|
52 | 2 | $oNewMap = new ClassMap($sPath, $sRegex); |
|
53 | |||
54 | 2 | if (MappingA::isValid($oModuleMap)) { |
|
55 | 1 | $oNewMap->merge($oModuleMap); |
|
56 | 1 | $oNewMap->setModuleMap($oModuleMap); |
|
57 | } |
||
58 | |||
59 | 2 | $this->aMaps[$sRegex] = $oNewMap; |
|
60 | } else { |
||
61 | $oNewMap = $this->aMaps[$sRegex]; |
||
62 | } |
||
63 | |||
64 | 2 | return $oNewMap; |
|
65 | } |
||
66 | |||
67 | /** |
||
68 | * @param string $sRegex |
||
69 | * @param string $sPath |
||
70 | * @throws ExceptionSitemap |
||
71 | * @returns MappingA |
||
72 | */ |
||
73 | 20 | View Code Duplication | protected function addClassMap($sRegex, $sPath) { |
93 | |||
94 | /** |
||
95 | * |
||
96 | * @param string $sRegex |
||
97 | * @param string $sPath |
||
98 | * @returns MappingA |
||
99 | */ |
||
100 | 19 | public function addModuleMap($sRegex, $sPath) { |
|
101 | 19 | $oModuleMap = $this->getCurrentModuleMap(); |
|
102 | |||
103 | // setting the parent module map to the existing one |
||
104 | 19 | if (MappingA::isValid($oModuleMap)) { |
|
105 | $sRegex = $oModuleMap->getRegex() . $sRegex; |
||
106 | |||
107 | $oNewModuleMap = new ModuleMap($sPath, $sRegex); |
||
108 | |||
109 | $oNewModuleMap->setModuleMap($oModuleMap); |
||
110 | $oNewModuleMap->merge($oModuleMap); |
||
111 | } else { |
||
112 | 19 | $oNewModuleMap = new RootMap($sPath, $sRegex); |
|
113 | } |
||
114 | |||
115 | // switching the current module map to the new one |
||
116 | 19 | $this->oCurrentModuleMap = $oNewModuleMap; |
|
117 | |||
118 | 19 | include ($sPath); |
|
119 | |||
120 | 19 | if (ModuleMap::isValid($oNewModuleMap->getModuleMap())) { |
|
121 | // after we finished parsing the new module, we set the previous module map as current |
||
122 | 19 | $this->oCurrentModuleMap = $oNewModuleMap->getModuleMap(); |
|
123 | } |
||
124 | |||
125 | 19 | return $oNewModuleMap; |
|
126 | } |
||
127 | |||
128 | /** |
||
129 | * |
||
130 | * @param string $sRegex |
||
131 | * @param string $sPath |
||
132 | * @returns MappingA |
||
133 | */ |
||
134 | 2 | public function addStaticMap($sRegex, $sPath) { |
|
139 | |||
140 | /** |
||
141 | * @returns ClassMap[] |
||
142 | */ |
||
143 | 20 | public function getMaps() { |
|
146 | |||
147 | /** |
||
148 | * This tells us if $sPath belongs to a file that can be used as a static resource |
||
149 | * eg. Javascript, CSS, etc. |
||
150 | * @param string $sPath |
||
151 | * @return bool |
||
152 | */ |
||
153 | 3 | public static function isValidStaticPath($sPath) { |
|
156 | |||
157 | /** |
||
158 | * Gets the class name of based on the included path |
||
159 | * In order for it to work the file needs to be already include()-d |
||
160 | * @param string $sPath |
||
161 | * @return string |
||
162 | */ |
||
163 | 1 | public static function getClassName($sPath) { |
|
171 | |||
172 | /** |
||
173 | * @returns ModuleMap |
||
174 | */ |
||
175 | 20 | public function getCurrentModuleMap() { |
|
178 | |||
179 | /** |
||
180 | * @return MappingA|null |
||
181 | */ |
||
182 | 2 | public function getParentModuleMap() { |
|
192 | |||
193 | /** |
||
194 | * |
||
195 | * @param string $sRegex |
||
196 | * @param string $sPath |
||
197 | * @throws ExceptionSitemap |
||
198 | * @returns MappingA |
||
199 | */ |
||
200 | 19 | public function map($sRegex, $sPath) { |
|
201 | 19 | if ($sRegex === null) { |
|
202 | throw new ExceptionSitemap('A regex URI must be present.'); |
||
203 | } |
||
204 | 19 | if (empty($sPath)) { |
|
205 | throw new ExceptionSitemap('A path must be present.'); |
||
206 | } |
||
207 | |||
208 | 19 | if (ClassMap::isValidMap($sPath)) { |
|
209 | // instead of a path we have a namespace |
||
210 | 19 | return $this->addClassMap($sRegex, $sPath); |
|
211 | } else { |
||
212 | 18 | if (!is_file($sPath)) { |
|
213 | 1 | $sPath = $this->getCurrentModuleMap()->getModulePath() . $sPath; |
|
214 | } |
||
215 | |||
216 | 18 | if (!is_file($sPath)) { |
|
217 | throw new ExceptionSitemap('The path associated with [' . $sRegex . '] can\'t be empty or an invalid file.'); |
||
218 | } |
||
219 | |||
220 | 18 | $sPath = str_replace(array('/', '\\'), array(DIRECTORY_SEPARATOR, DIRECTORY_SEPARATOR), $sPath); |
|
221 | 18 | if (ModuleMap::isValidMap($sPath)) { |
|
222 | // Valid site map |
||
223 | 18 | return $this->addModuleMap($sRegex, $sPath); |
|
224 | } |
||
225 | 1 | if (self::isValidStaticPath($sPath)) { |
|
226 | // Valid static file |
||
227 | 1 | return $this->addStaticMap($sRegex, $sPath); |
|
228 | } |
||
229 | throw new ExceptionSitemap('[' . $sPath . '] could not be loaded.'); |
||
230 | } |
||
231 | } |
||
232 | |||
233 | /** |
||
234 | * @returns ModuleMap[] |
||
235 | */ |
||
236 | 2 | protected function getAllModules() { |
|
251 | |||
252 | /** |
||
253 | * @returns ClassMap[] |
||
254 | */ |
||
255 | 2 | protected function getAllControllers() { |
|
266 | |||
267 | public function getControllerMappings() { |
||
268 | $aC = false; |
||
269 | foreach ($this->getAllControllers() as $sKey => $oController) { |
||
270 | $aC[$sKey] = $oController->getPath(); |
||
271 | } |
||
272 | return $aC; |
||
273 | } |
||
274 | |||
275 | public function getModuleMappings() { |
||
276 | $aC = false; |
||
277 | foreach ($this->getAllModules() as $sKey => $oModule) { |
||
278 | $aC[$sKey] = $oModule->getPath(); |
||
279 | } |
||
280 | return $aC; |
||
281 | } |
||
282 | |||
283 | /** |
||
284 | * @returns ClassMap[] |
||
285 | */ |
||
286 | public function getProcessorMappings() { |
||
287 | $aC = false; |
||
288 | foreach ($this->getMaps() as $sKey => $oProcessor) { |
||
289 | $aC[$sKey] = $oProcessor->getPath(); |
||
290 | } |
||
291 | return $aC; |
||
292 | } |
||
293 | |||
294 | /** |
||
295 | * @param ProcessorA $oProcessor |
||
296 | * @return MappingA |
||
297 | */ |
||
298 | 2 | public function findProcessorMap(ProcessorA $oProcessor) { |
|
307 | } |
||
308 |
This check compares the return type specified in the
@return
annotation of a function or method doc comment with the types returned by the function and raises an issue if they mismatch.