Complex classes like Properties 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 Properties, and based on these observations, apply Extract Interface, too.
1 | <?php |
||
36 | class Properties extends AbstractFileParser |
||
37 | { |
||
38 | /** |
||
39 | * Loads a PROPERTIES file as an array. |
||
40 | * |
||
41 | * @param string $path File path |
||
42 | * |
||
43 | * @throws ParseException If there is an error parsing PROPERTIES file |
||
44 | * |
||
45 | * @return array The parsed data |
||
46 | * |
||
47 | * @since 0.2.4 |
||
48 | */ |
||
49 | public function parse($path) |
||
50 | { |
||
51 | 6 | $data = null; |
|
52 | |||
53 | 6 | $this->loadFile($path); |
|
54 | |||
55 | 6 | try { |
|
56 | $data = $this->getProperties(); |
||
57 | 6 | } catch (Exception $ex) { |
|
58 | 3 | throw new ParseException( |
|
59 | [ |
||
60 | 3 | 'message' => 'Error parsing PROPERTIES file', |
|
61 | 3 | 'exception' => $ex |
|
62 | ] |
||
63 | 2 | ); |
|
64 | } |
||
65 | |||
66 | 3 | return $data; |
|
67 | } |
||
68 | |||
69 | /** |
||
70 | * {@inheritdoc} |
||
71 | * |
||
72 | * @return array Supported extensions |
||
73 | * |
||
74 | * @since 0.1.0 |
||
75 | */ |
||
76 | 3 | public function getSupportedFileExtensions() |
|
80 | |||
81 | /** |
||
82 | * Parse Java-Properties |
||
83 | * |
||
84 | * @return array The parsed data |
||
85 | * @since 0.2.6 |
||
86 | * @codeCoverageIgnore |
||
87 | */ |
||
88 | private function parseProperties() |
||
233 | |||
234 | /** |
||
235 | * {@inheritdoc} |
||
236 | * |
||
237 | * @param array|null $analysis Configuration items |
||
238 | * |
||
239 | * @return array The configuration items |
||
240 | * |
||
241 | * @since 0.2.4 |
||
242 | * @codeCoverageIgnore |
||
243 | */ |
||
244 | private function unescapeProperties($analysis) |
||
252 | |||
253 | /** |
||
254 | * {@inheritdoc} |
||
255 | * |
||
256 | * @param string $field Field name |
||
257 | * @param array|null $analysis Configuration items |
||
258 | * |
||
259 | * @return array Configuration items after deletion |
||
260 | * |
||
261 | * @since 0.2.4 |
||
262 | * @codeCoverageIgnore |
||
263 | */ |
||
264 | private function deleteFields($field, $analysis) |
||
274 | |||
275 | /** |
||
276 | * {@inheritdoc} |
||
277 | * |
||
278 | * @param string|bool|null $file File path |
||
279 | * |
||
280 | * @return array Configuration items |
||
281 | * |
||
282 | * @since 0.2.4 |
||
283 | * @codeCoverageIgnore |
||
284 | */ |
||
285 | public function getProperties($file = null) |
||
302 | |||
303 | /** |
||
304 | * Loads in the given file and parses it. |
||
305 | * |
||
306 | * @param string|bool|null $file File to load |
||
307 | * |
||
308 | * @return array The parsed file data |
||
309 | * |
||
310 | * @since 0.2.4 |
||
311 | * @codeCoverageIgnore |
||
312 | */ |
||
313 | protected function loadFile($file = null) |
||
323 | |||
324 | /** |
||
325 | * Returns the formatted configuration file contents. |
||
326 | * |
||
327 | * @param array $contents configuration array |
||
328 | * |
||
329 | * @return string formatted configuration file contents |
||
330 | * |
||
331 | * @since 0.2.4 |
||
332 | * @codeCoverageIgnore |
||
333 | */ |
||
334 | protected function exportFormat($contents = null) |
||
340 | |||
341 | /** |
||
342 | * __toString. |
||
343 | * |
||
344 | * @return string |
||
345 | * @since 0.1.2 |
||
346 | * @codeCoverageIgnore |
||
347 | */ |
||
348 | public function __toString() |
||
352 | } |
||
353 | |||
355 |