Automattic /
jetpack
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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| 30 | class Jetpack_Gutenberg { |
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| 31 | |||
| 32 | /** |
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| 33 | * Array of blocks we will be registering. |
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| 34 | * |
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| 35 | * @var array $blocks Array of blocks we will be registering. |
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| 36 | */ |
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| 37 | private static $jetpack_blocks = array(); |
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| 38 | private static $blocks_index = array(); |
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| 39 | /** |
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| 40 | * Add a block to the list of blocks to be registered. |
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| 41 | * |
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| 42 | * @param string $type Slug of the block. |
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| 43 | * @param array $args Arguments that are passed into the register_block_type. |
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| 44 | */ |
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| 45 | public static function add_block( $type, $args, $availability ) { |
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| 48 | |||
| 49 | /** |
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| 50 | * Register all Jetpack blocks available. |
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| 51 | * |
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| 52 | * @return void|WP_Block_Type|false The registered block type on success, or false on failure. |
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| 53 | */ |
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| 54 | public static function load_blocks() { |
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| 80 | |||
| 81 | /** |
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| 82 | * Checks for a given .json file in the `_inc/blocks` folder. |
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| 83 | * |
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| 84 | * @param $preset The name of the .json file to look for. |
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| 85 | * |
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| 86 | * @return bool True if the file is found. |
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| 87 | */ |
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| 88 | public static function preset_exists( $preset ) { |
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| 91 | |||
| 92 | /** |
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| 93 | * Decodes JSON loaded from a preset file in `_inc/blocks` |
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| 94 | * |
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| 95 | * @param $preset The name of the .json file to load. |
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| 96 | * |
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| 97 | * @return mixed Returns an object if the file is present, or false if a valid .json file is not present. |
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| 98 | */ |
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| 99 | public static function get_preset( $preset ) { |
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| 102 | |||
| 103 | /** |
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| 104 | * Filters the results of `apply_filter( 'jetpack_set_available_blocks', array() )` |
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| 105 | * using the contents of `_inc/blocks/blocks-manifest.json` |
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| 106 | * |
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| 107 | * @param $blocks The default list. |
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| 108 | * |
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| 109 | * @return array A list of blocks: eg [ 'publicize', 'markdown' ] |
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| 110 | */ |
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| 111 | public static function jetpack_set_available_blocks( $blocks ) { |
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| 121 | |||
| 122 | /** |
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| 123 | * @return array A list of block-availability information, eg: [ "publicize" => ["available" => true ], "markdown" => [ "available" => false, "unavailable_reason" => 'missing_module' ] ] |
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| 124 | */ |
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| 125 | public static function get_block_availability() { |
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| 159 | |||
| 160 | /** |
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| 161 | * Check if Gutenberg editor is available |
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| 162 | * |
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| 163 | * @since 6.7.0 |
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| 164 | * |
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| 165 | * @return bool |
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| 166 | */ |
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| 167 | public static function is_gutenberg_available() { |
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| 170 | |||
| 171 | /** |
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| 172 | * Check whether conditions indicate Gutenberg blocks should be loaded |
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| 173 | * |
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| 174 | * Loading blocks is enabled by default and may be disabled via filter: |
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| 175 | * add_filter( 'jetpack_gutenberg', '__return_false' ); |
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| 176 | * |
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| 177 | * @since 6.7.0 |
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| 178 | * |
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| 179 | * @return bool |
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| 180 | */ |
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| 181 | public static function should_load_blocks() { |
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| 195 | |||
| 196 | /** |
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| 197 | * Only enqueue block assets when needed. |
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| 198 | * |
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| 199 | * @param string $type slug of the block. |
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| 200 | * |
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| 201 | * @return void |
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| 202 | */ |
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| 203 | public static function load_assets_as_required( $type ) { |
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| 221 | |||
| 222 | /** |
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| 223 | * Check if an asset exists for a block. |
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| 224 | * |
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| 225 | * @param string $file Path of the file we are looking for. |
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| 226 | * |
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| 227 | * @return bool $block_has_asset Does the file exist. |
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| 228 | */ |
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| 229 | public static function block_has_asset( $file ) { |
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| 232 | |||
| 233 | /** |
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| 234 | * Get the version number to use when loading the file. Allows us to bypass cache when developing. |
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| 235 | * |
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| 236 | * @param string $file Path of the file we are looking for. |
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| 237 | * |
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| 238 | * @return string $script_version Version number. |
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| 239 | */ |
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| 240 | public static function get_asset_version( $file ) { |
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| 245 | |||
| 246 | /** |
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| 247 | * Load Gutenberg editor assets |
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| 248 | * |
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| 249 | * @since 6.7.0 |
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| 250 | * |
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| 251 | * @return void |
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| 252 | */ |
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| 253 | public static function enqueue_block_editor_assets() { |
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| 312 | } |
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| 313 |
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
$italyis not defined by the methodfinale(...).The most likely cause is that the parameter was removed, but the annotation was not.