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 |
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32 | class Shortcode implements ShortcodeInterface { |
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33 | |||
34 | use ConfigTrait; |
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35 | |||
36 | /** |
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37 | * Name of the shortcode handler. |
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38 | * |
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39 | * @since 0.1.0 |
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40 | * |
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41 | * @var string |
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42 | */ |
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43 | protected $shortcode_tag; |
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44 | |||
45 | /** |
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46 | * Parser to parse and validate the shortcode's attributes. |
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47 | * |
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48 | * @since 0.1.0 |
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49 | * |
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50 | * @var ShortcodeAttsParserInterface |
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51 | */ |
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52 | protected $atts_parser; |
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53 | |||
54 | /** |
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55 | * Dependencies of the shortcode. |
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56 | * |
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57 | * @since 0.1.0 |
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58 | * |
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59 | * @var DependencyManager |
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60 | */ |
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61 | protected $dependencies; |
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62 | |||
63 | /** |
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64 | * Cache context information so we can pass it on to the render() method. |
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65 | * |
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66 | * @var |
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67 | * |
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68 | * @since 0.2.3 |
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69 | */ |
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70 | protected $context; |
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71 | |||
72 | /** |
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73 | * Instantiate Basic Shortcode. |
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74 | * |
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75 | * @since 0.1.0 |
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76 | * |
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77 | * @param string $shortcode_tag Tag that identifies the |
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78 | * shortcode. |
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79 | * @param ConfigInterface $config Configuration settings. |
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80 | * @param ShortcodeAttsParser $atts_parser Attributes parser and |
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81 | * validator. |
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82 | * @param DependencyManager|null $dependencies Optional. Dependencies of |
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83 | * the shortcode. |
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84 | * @throws RuntimeException If the config could not be processed. |
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85 | */ |
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86 | View Code Duplication | public function __construct( |
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101 | |||
102 | /** |
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103 | * Register the shortcode handler function with WordPress. |
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104 | * |
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105 | * @since 0.1.0 |
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106 | * |
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107 | * @param mixed $context Optional. Arguments to pass on to the Registrable. |
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108 | * @return void |
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109 | */ |
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110 | public function register( $context = null ) { |
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118 | |||
119 | /** |
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120 | * Check whether the shortcode is needed. |
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121 | * |
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122 | * @since 0.2.0 |
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123 | * |
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124 | * @param mixed $context Data about the context in which the call is made. |
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125 | * @return boolean Whether the shortcode is needed or not. |
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126 | */ |
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127 | View Code Duplication | protected function is_needed( $context = null ) { |
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139 | |||
140 | /** |
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141 | * Get the shortcode tag. |
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142 | * |
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143 | * @since 0.1.0 |
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144 | * |
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145 | * @return string Shortcode tag. |
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146 | */ |
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147 | public function get_tag() { |
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150 | |||
151 | /** |
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152 | * Render the shortcode. |
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153 | * |
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154 | * @since 0.1.0 |
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155 | * |
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156 | * @throws DomainException |
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157 | * |
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158 | * @param array $atts Attributes to modify the standard behavior |
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159 | * of the shortcode. |
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160 | * @param string|null $content Optional. Content between enclosing |
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161 | * shortcodes. |
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162 | * @param string|null $tag Optional. The tag of the shortcode to |
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163 | * render. |
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164 | * @return string The shortcode's HTML output. |
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165 | */ |
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166 | public function render( $atts, $content = null, $tag = null ) { |
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189 | |||
190 | /** |
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191 | * Get an array of dependency handles for the current shortcode. |
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192 | * |
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193 | * @since 0.2.7 |
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194 | * |
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195 | * @return array Array of strings that are registered dependency handles. |
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196 | */ |
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197 | protected function get_dependency_handles() { |
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203 | |||
204 | /** |
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205 | * Get the rendered HTML for a given view. |
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206 | * |
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207 | * @since 0.2.6 |
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208 | * |
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209 | * @param string $view The view to render. |
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210 | * @param mixed $context The context to pass through to the view. |
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211 | * @return string HTML rendering of the view. |
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212 | */ |
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213 | protected function render_view( $view, $context ) { |
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222 | |||
223 | /** |
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224 | * Get the name of the view to render. |
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225 | * |
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226 | * @since 0.2.6 |
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227 | * |
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228 | * @return string Name of the view to render. |
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229 | */ |
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230 | protected function get_view() { |
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240 | |||
241 | /** |
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242 | * Execute this shortcode directly from code. |
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243 | * |
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244 | * @since 0.2.4 |
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245 | * |
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246 | * @param array $atts Array of attributes to pass to the shortcode. |
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247 | * @param string|null $content Inner content to pass to the shortcode. |
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248 | * @return string|false Rendered HTML. |
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249 | */ |
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250 | public function do_this( array $atts = [ ], $content = null ) { |
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253 | } |
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254 |