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 Jetpack_Gutenberg 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 Jetpack_Gutenberg, and based on these observations, apply Extract Interface, too.
1 | <?php |
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45 | class Jetpack_Gutenberg { |
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46 | |||
47 | // BLOCKS |
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48 | private static $default_blocks = array( |
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49 | 'map', |
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50 | 'markdown', |
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51 | 'simple-payments', |
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52 | 'related-posts', |
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53 | 'contact-form', |
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54 | 'field-text', |
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55 | 'field-name', |
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56 | 'field-email', |
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57 | 'field-url', |
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58 | 'field-date', |
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59 | 'field-telephone', |
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60 | 'field-textarea', |
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61 | 'field-checkbox', |
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62 | 'field-checkbox-multiple', |
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63 | 'field-radio', |
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64 | 'field-select' |
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65 | ); |
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66 | |||
67 | /** |
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68 | * @var array Array of blocks information. |
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69 | * |
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70 | * For each block we have information about the availability for the current user |
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71 | */ |
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72 | private static $blocks = array(); |
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73 | |||
74 | private static $availability = array(); |
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75 | |||
76 | // PLUGINS |
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77 | private static $default_plugins = array( |
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78 | 'publicize', |
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79 | ); |
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80 | /** |
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81 | * @var array Array of plugins information. |
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82 | * |
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83 | * For each block we have information about the availability for the current user |
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84 | */ |
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85 | private static $plugins = array(); |
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86 | |||
87 | /** |
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88 | * @var array Array of extensions we will be registering. |
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89 | */ |
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90 | private static $registered = array(); |
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91 | |||
92 | /** |
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93 | * Add a block to the list of blocks to be registered. |
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94 | * |
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95 | * @param string $slug Slug of the block. |
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96 | * @param array $args Arguments that are passed into the register_block_type. |
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97 | * @param array $availability array containing if a block is available and the reason when it is not. |
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98 | */ |
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99 | public static function register( $slug, $args, $availability ) { |
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103 | |||
104 | /** |
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105 | * Register all Jetpack blocks available. |
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106 | * |
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107 | * @return void |
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108 | */ |
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109 | public static function init() { |
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127 | |||
128 | /** |
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129 | * @deprecated |
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130 | */ |
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131 | static function load_blocks() { |
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134 | |||
135 | /** |
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136 | * Add a block to the list of blocks to be registered. |
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137 | * |
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138 | * @param string $slug Slug of the block. |
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139 | * @param array $args Arguments that are passed into the register_block_type. |
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140 | * @param array $availability array containing if a block is available and the reason when it is not. |
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141 | * |
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142 | * @deprecated |
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143 | */ |
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144 | static function add_block( $type, $args, $availability ) { |
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147 | |||
148 | static function load( $request = null ) { |
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175 | |||
176 | static function is_registered( $slug ) { |
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179 | |||
180 | static function get_registered_args( $slug ) { |
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186 | |||
187 | static function is_available( $slug ) { |
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193 | |||
194 | |||
195 | static function get_extension_availability( $slug ) { |
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218 | |||
219 | static function set_blocks_availability() { |
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224 | |||
225 | static function set_plugins_availability() { |
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230 | |||
231 | static function register_blocks() { |
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238 | |||
239 | /** |
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240 | * Return the Gutenberg extensions (blocks and plugins) directory |
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241 | * |
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242 | * @return string The Gutenberg extensions directory |
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243 | */ |
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244 | public static function get_blocks_directory() { |
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254 | |||
255 | /** |
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256 | * Checks for a given .json file in the blocks folder. |
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257 | * |
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258 | * @param $preset The name of the .json file to look for. |
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259 | * |
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260 | * @return bool True if the file is found. |
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261 | */ |
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262 | public static function preset_exists( $preset ) { |
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265 | |||
266 | /** |
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267 | * Decodes JSON loaded from a preset file in the blocks folder |
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268 | * |
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269 | * @param $preset The name of the .json file to load. |
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270 | * |
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271 | * @return mixed Returns an object if the file is present, or false if a valid .json file is not present. |
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272 | */ |
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273 | public static function get_preset( $preset ) { |
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276 | |||
277 | /** |
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278 | * Filters the results of `apply_filter( 'jetpack_set_available_blocks', array() )` |
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279 | * using the merged contents of `blocks-manifest.json` ( $preset_blocks ) |
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280 | * and self::$jetpack_blocks ( $internal_blocks ) |
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281 | * |
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282 | * @param $blocks The default list. |
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283 | * |
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284 | * @return array A list of blocks: eg [ 'publicize', 'markdown' ] |
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285 | */ |
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286 | public static function jetpack_set_available_blocks( $blocks ) { |
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287 | $preset_blocks_manifest = self::preset_exists( 'index' ) ? self::get_preset( 'index' ) : (object) array( 'blocks' => $blocks ); |
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288 | // manifest shouldn't remove default blocks... |
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289 | |||
290 | $preset_blocks = isset( $preset_blocks_manifest->production ) ? (array) $preset_blocks_manifest->production : array() ; |
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291 | $preset_blocks = array_unique( array_merge( $preset_blocks, $blocks ) ); |
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292 | |||
293 | if ( Jetpack_Constants::is_true( 'JETPACK_BETA_BLOCKS' ) ) { |
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294 | $beta_blocks = isset( $preset_blocks_manifest->beta ) ? (array) $preset_blocks_manifest->beta : array(); |
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295 | return array_unique( array_merge( $preset_blocks, $beta_blocks ) ); |
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296 | } |
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297 | |||
298 | return $preset_blocks; |
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299 | } |
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300 | |||
301 | /** |
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302 | * @deprecated |
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303 | * @return array A list of block-availability information, eg: [ "publicize" => ["available" => true ], "markdown" => [ "available" => false, "unavailable_reason" => 'missing_module' ] ] |
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304 | */ |
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305 | public static function get_block_availability() { |
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308 | |||
309 | /** |
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310 | * @return array A list of block and plugins and their availablity status |
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311 | */ |
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312 | public static function get_availability() { |
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319 | |||
320 | /** |
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321 | * Check if Gutenberg editor is available |
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322 | * |
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323 | * @since 6.7.0 |
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324 | * |
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325 | * @return bool |
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326 | */ |
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327 | public static function is_gutenberg_available() { |
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330 | |||
331 | /** |
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332 | * Check whether conditions indicate Gutenberg blocks should be loaded |
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333 | * |
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334 | * Loading blocks is enabled by default and may be disabled via filter: |
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335 | * add_filter( 'jetpack_gutenberg', '__return_false' ); |
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336 | * |
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337 | * @since 6.7.0 |
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338 | * @deprecated |
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339 | * @return bool |
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340 | */ |
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341 | public static function should_load_blocks() { |
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344 | |||
345 | /** |
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346 | * Check whether conditions indicate Gutenberg Extensions (blocks and plugins) should be loaded |
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347 | * |
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348 | * Loading blocks and plugins is enabled by default and may be disabled via filter: |
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349 | * add_filter( 'jetpack_gutenberg', '__return_false' ); |
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350 | * |
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351 | * @since 6.9.0 |
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352 | * |
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353 | * @return bool |
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354 | */ |
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355 | public static function should_load() { |
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369 | |||
370 | /** |
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371 | * Only enqueue block assets when needed. |
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372 | * |
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373 | * @param string $type slug of the block. |
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374 | * @param array $script_dependencies An array of view-side Javascript dependencies to be enqueued. |
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375 | * |
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376 | * @return void |
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377 | */ |
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378 | public static function load_assets_as_required( $type, $script_dependencies = array() ) { |
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407 | |||
408 | /** |
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409 | * Check if an asset exists for a block. |
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410 | * |
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411 | * @param string $file Path of the file we are looking for. |
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412 | * |
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413 | * @return bool $block_has_asset Does the file exist. |
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414 | */ |
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415 | public static function block_has_asset( $file ) { |
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418 | |||
419 | /** |
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420 | * Get the version number to use when loading the file. Allows us to bypass cache when developing. |
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421 | * |
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422 | * @param string $file Path of the file we are looking for. |
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423 | * |
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424 | * @return string $script_version Version number. |
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425 | */ |
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426 | public static function get_asset_version( $file ) { |
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431 | |||
432 | /** |
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433 | * Load Gutenberg editor assets |
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434 | * |
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435 | * @since 6.7.0 |
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436 | * |
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437 | * @return void |
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438 | */ |
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439 | public static function enqueue_block_editor_assets() { |
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504 | } |
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505 |
This check looks for PHPDoc comments describing methods or function parameters that do not exist on the corresponding method or function.
Consider the following example. The parameter
$italy
is not defined by the methodfinale(...)
.The most likely cause is that the parameter was removed, but the annotation was not.