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| 1 | <?php |
| 2 | declare( strict_types = 1 ); |
| 3 | |
| 4 | namespace Wikimedia\Parsoid\Core; |
| 5 | |
| 6 | /** |
| 7 | * Interface for collecting the results of a parse. |
| 8 | * |
| 9 | * This class is used by Parsoid to record metainformation about a |
| 10 | * particular bit of parsed content which is extracted during the |
| 11 | * parse. This includes (for example) table of contents information, |
| 12 | * and lists of links/categories/templates/images present in the |
| 13 | * content. Expected cache lifetime of this parsed content is also |
| 14 | * recorded here, as it is influenced by certain things which may |
| 15 | * be encountered during the parse. |
| 16 | * |
| 17 | * In core this is implemented by ParserOutput. Core uses |
| 18 | * ParserOutput to record the rendered HTML (and rendered table of |
| 19 | * contents HTML), but on the Parsoid side we're going to keep |
| 20 | * rendered HTML DOM out of this interface (we use HtmlPageBundle for |
| 21 | * this). |
| 22 | */ |
| 23 | interface ContentMetadataCollector { |
| 24 | /* |
| 25 | * Internal implementation notes: |
| 26 | * This class was refactored out of ParserOutput in core. |
| 27 | * |
| 28 | * == Deliberately omitted == |
| 29 | * ::get*()/::has*() and other getters |
| 30 | * This is a builder-only interface. This also avoids ordering |
| 31 | * issues if/when Parsoid passes this class to sub-parses/extensions. |
| 32 | * ::setSpeculativeRevIdUsed() |
| 33 | * ::setRevisionTimestampUsed() |
| 34 | * ::setRevisionUsedSha1Base36() |
| 35 | * ::setSpeculativePageIdUsed() |
| 36 | * T292865: these should be plumbed through direct from ParserOptions |
| 37 | * or use the ::setOutputFlag() or appendOutputStrings() mechanism. |
| 38 | * ::setTimestamp() |
| 39 | * This is used by ParserCache and is a little optimization used to |
| 40 | * show the correct 'article was last edited on blablablah' box on |
| 41 | * page views. Parsoid shouldn't need to worry about this; probably |
| 42 | * part of T292865. |
| 43 | * ::addCacheMessage() |
| 44 | * This is marked @internal in core. |
| 45 | * Not clear yet whether Parsoid needs this. |
| 46 | * ::getText()/::setText() |
| 47 | * T293512: rendered HTML doesn't belong in ParserOutput |
| 48 | * ::addWrapperDivClass()/::clearWrapperDivClass() |
| 49 | * Has to do with ::getText() implementation, see above |
| 50 | * ::setTitleText() |
| 51 | * Omited because it contains rendered HTML |
| 52 | * (should become a method which takes a DOM tree instead?) |
| 53 | * ::setTOCHTML() |
| 54 | * Omitted because it contains rendered HTML. |
| 55 | * T293513 will remove this method from ParserOutput |
| 56 | * ::addHeadItem() |
| 57 | * Not clear this is needed by Parsoid (but maybe some of the stuff |
| 58 | * Parsoid adds to head could be refactored to use this interface). |
| 59 | * Should be DOM not string data! |
| 60 | * ::addOutputPageMetadata() |
| 61 | * OutputPage isn't a Parsoid interface, so this shouldn't be needed |
| 62 | * by Parsoid. |
| 63 | * ::setDisplayTitle() |
| 64 | * T293514: This desugars to calls to two other methods in |
| 65 | * ContentOutputBuilder; callers can refactor to invoke those directly. |
| 66 | * ::unsetPageProperty() |
| 67 | * If parse fragment A is setting a property |
| 68 | * and parse fragment B is unsetting the property, we've introduced |
| 69 | * an ordering dependency. We'd like to avoid that code pattern. |
| 70 | * ::resetParseStartTime()/::getTimeSinceStart() |
| 71 | * Not needed by parsoid? |
| 72 | * ::finalizeAdaptiveCacheExpiry() |
| 73 | * Same as above, can probably be invoked by caller of parsoid, |
| 74 | * doesn't need to be in Parsoid library code. |
| 75 | * ::mergeInternalMetaDataFrom() |
| 76 | * ::mergeHtmlMetaDataFrom() |
| 77 | * ::mergeTrackingMetaDataFrom() |
| 78 | * Rather than explicitly merging ContentMetadataCollectors, we'd |
| 79 | * prefer to pass a single ContentOutputBuilder around to accumulate |
| 80 | * results. We're going to wait and see to what extent methods like |
| 81 | * this are necessary. |
| 82 | * (ParserOutput will implement a ::mergeTo(ContentMetadataCollector) |
| 83 | * method, as it has read access to its own contents.) |
| 84 | * ::setNoGallery()/::setEnableOOUI()/::setNewSection()/::setHideNewSection() |
| 85 | * ::setPreventClickjacking()/::setIndexPolicy()/ |
| 86 | * Available via ::setOutputFlag() (see T292868) |
| 87 | * ::setCategories() |
| 88 | * Doesn't seem necessary, we have ::addCategory(). |
| 89 | * (And adding the ability to overwrite categories would be bad.) |
| 90 | * ::addTrackingCategory() |
| 91 | * This was moved to Parser / the TrackingCategories service, and |
| 92 | * equivalently DataAccess in Parsoid. |
| 93 | * ::isLinkInternal() |
| 94 | * T296036: Should be non-public or at least @internal? |
| 95 | * ::addInterwikiLink() |
| 96 | * invoked from ::addLink() if the link is external, we don't |
| 97 | * need a separate entry point. |
| 98 | * ::setSections() |
| 99 | * T296025: replaced with ::setTOCData() |
| 100 | * ::setLanguageLinks() |
| 101 | * Deprecated; replaced with ::addLanguageLink() |
| 102 | * ::addExtraCSPDefaultSrc() |
| 103 | * ::addExtraCSPStyleSrc() |
| 104 | * ::addExtraCSPScriptSrc() |
| 105 | * T296345: handled through ::appendOutputStrings() |
| 106 | * ::updateRuntimeAdaptiveExpiry() |
| 107 | * See discussion in T296345. Parsoid shouldn't need to know about |
| 108 | * this; extensions can bypass Parsoid to invoke the ParserOutput |
| 109 | * method directly. |
| 110 | * |
| 111 | * == Temporarily omitted == |
| 112 | * ::addTemplate() |
| 113 | * T296038: Requires page id and revision id. In addition, this |
| 114 | * interacts with user hooks. The MediaWiki side should probably be |
| 115 | * responsible for updating the Template dependencies not Parsoid. |
| 116 | * OTOH, we need to return *something* like a Title back because |
| 117 | * eventually Parsoid has to fetch the template to expand it. |
| 118 | * ::setTitleText() |
| 119 | * T293514: This contains the title in HTML and is redundant with |
| 120 | * ::setDisplayTitle() |
| 121 | */ |
| 122 | |
| 123 | /** |
| 124 | * Add a category, with the given sort key. |
| 125 | * |
| 126 | * @param LinkTarget $c Category name |
| 127 | * @param string $sort Sort key (pass the empty string to use the default) |
| 128 | */ |
| 129 | public function addCategory( $c, $sort = '' ): void; |
| 130 | |
| 131 | /** |
| 132 | * Record a local or interwiki inline link for saving in future link tables. |
| 133 | * |
| 134 | * @param LinkTarget $link (used to require Title until 1.38) |
| 135 | * @param int|null $id Optional known page_id so we can skip the lookup |
| 136 | * (generally not used by Parsoid) |
| 137 | */ |
| 138 | public function addLink( LinkTarget $link, $id = null ): void; |
| 139 | |
| 140 | /** |
| 141 | * Register a file dependency for this output |
| 142 | * @param LinkTarget $name Title dbKey |
| 143 | * @param string|false|null $timestamp MW timestamp of file creation (or false if non-existing) |
| 144 | * @param string|false|null $sha1 Base 36 SHA-1 of file (or false if non-existing) |
| 145 | */ |
| 146 | public function addImage( LinkTarget $name, $timestamp = null, $sha1 = null ): void; |
| 147 | |
| 148 | /** |
| 149 | * Add a language link. |
| 150 | * @param LinkTarget $lt |
| 151 | */ |
| 152 | public function addLanguageLink( LinkTarget $lt ): void; |
| 153 | |
| 154 | /** |
| 155 | * Add a warning to the output for this page. |
| 156 | * @param string $msg The localization message key for the warning |
| 157 | * @param mixed ...$args Optional arguments for the message |
| 158 | */ |
| 159 | public function addWarningMsg( string $msg, ...$args ): void; |
| 160 | |
| 161 | /** |
| 162 | * @param string $url External link URL |
| 163 | */ |
| 164 | public function addExternalLink( string $url ): void; |
| 165 | |
| 166 | /** |
| 167 | * Provides a uniform interface to various boolean flags stored |
| 168 | * in the content metadata. Flags internal to MediaWiki core should |
| 169 | * have names which are constants in ParserOutputFlags. Extensions |
| 170 | * should use ::setExtensionData() rather than creating new flags |
| 171 | * with ::setOutputFlag() in order to prevent namespace conflicts. |
| 172 | * |
| 173 | * @param string $name A flag name |
| 174 | * @param bool $val |
| 175 | */ |
| 176 | public function setOutputFlag( string $name, bool $val = true ): void; |
| 177 | |
| 178 | /** |
| 179 | * Provides a uniform interface to various appendable lists of strings |
| 180 | * stored in the content metadata. Strings internal to MediaWiki core should |
| 181 | * have names which are constants in ParserOutputStrings. Extensions |
| 182 | * should use ::setExtensionData() rather than creating new keys here |
| 183 | * in order to prevent namespace conflicts. |
| 184 | * |
| 185 | * @param string $name A string name |
| 186 | * @param string[] $value |
| 187 | */ |
| 188 | public function appendOutputStrings( string $name, array $value ): void; |
| 189 | |
| 190 | /** |
| 191 | * Set a numeric page property whose *value* is intended to be sorted |
| 192 | * and indexed. The sort key used for the property will be the value, |
| 193 | * coerced to a number. It is also possible to efficiently look up all |
| 194 | * the pages with a certain property (the "presence" of the |
| 195 | * property is also indexed; see Special:PagesWithProp, |
| 196 | * list=pageswithprop). |
| 197 | * |
| 198 | * The page property is stored in the page_props database |
| 199 | * table. The page_props table is a key-value store indexed by the |
| 200 | * page ID. This allows the parser to set a property on a page |
| 201 | * whose value can then be quickly retrieved given the page ID or via a |
| 202 | * DB join when given the page title. The page_props table is *also* |
| 203 | * indexed on the numeric sort key passed as $numericValue to this |
| 204 | * method. This allows for efficient "top k" queries of pages with |
| 205 | * respect to a given property. |
| 206 | * |
| 207 | * In the future, we may allow the value to be specified independent |
| 208 | * of sort key (T357783). |
| 209 | * |
| 210 | * The setNumericPageProperty() method is thus used to propagate |
| 211 | * properties from the parsed page to request contexts other than |
| 212 | * a page view of the currently parsed article. |
| 213 | * |
| 214 | * Some applications examples: |
| 215 | * |
| 216 | * * The Proofread page extension stores |
| 217 | * `proofread_page_quality_level` as a numeric property to allow |
| 218 | * efficient retrieval of pages of a certain quality level. |
| 219 | * |
| 220 | * * Keeping a count of the number of errors found in a page property |
| 221 | * to allow listing pages in order from most errors to least. |
| 222 | * |
| 223 | * If you need a placeholder value, you likely should be using |
| 224 | * ::setUnsortedPageProperty() instead. |
| 225 | * |
| 226 | * @note Note that the PageProp service always returns strings |
| 227 | * for the value of the page property, while values retrieved |
| 228 | * from this ParserOutput will be numeric. Be careful to distinguish |
| 229 | * these two cases. |
| 230 | * |
| 231 | * @note Do not use setNumericPageProperty() to set a property |
| 232 | * which is only used in a context where the ParserOutput object |
| 233 | * itself is already available, for example a normal page |
| 234 | * view. There is no need to save such a property in the database |
| 235 | * since the text is already parsed; use ::setExtensionData() |
| 236 | * instead. |
| 237 | * |
| 238 | * @par Example: |
| 239 | * @code |
| 240 | * $parser->getOutput()->setExtensionData( 'my_ext_foo', '...' ); |
| 241 | * @endcode |
| 242 | * |
| 243 | * And then later, in the OutputPageParserOutput hook or similar: |
| 244 | * |
| 245 | * @par Example: |
| 246 | * @code |
| 247 | * $output->getExtensionData( 'my_ext_foo' ); |
| 248 | * @endcode |
| 249 | * |
| 250 | * @param string $propName The name of the page property |
| 251 | * @param int|float|string $numericValue the numeric value |
| 252 | * @since 1.42 |
| 253 | */ |
| 254 | public function setNumericPageProperty( string $propName, $numericValue ): void; |
| 255 | |
| 256 | /** |
| 257 | * Set a page property whose *value* is not intended to be sorted |
| 258 | * and indexed. It is still possible to efficiently look up all |
| 259 | * the pages with a certain property (the "presence" of the |
| 260 | * property *is* indexed; see Special:PagesWithProp, |
| 261 | * list=pageswithprop). |
| 262 | * |
| 263 | * The page property is stored in the page_props database |
| 264 | * table. The page_props table is a key-value store indexed by the |
| 265 | * page ID. This allows the parser to set a property on a page |
| 266 | * whose value can then be quickly retrieved given the page ID or via a |
| 267 | * DB join when given the page title. |
| 268 | * |
| 269 | * The setUnsortedPageProperty() method is thus used to propagate |
| 270 | * properties from the parsed page to request contexts other than |
| 271 | * a page view of the currently parsed article. |
| 272 | * |
| 273 | * Some applications examples: |
| 274 | * |
| 275 | * * To implement hidden categories, hiding pages from category listings |
| 276 | * by storing a page property. |
| 277 | * |
| 278 | * * Overriding the displayed article title |
| 279 | * (ParserOutput::setDisplayTitle()). |
| 280 | * |
| 281 | * * To implement image tagging, for example displaying an icon on an |
| 282 | * image thumbnail to indicate that it is listed for deletion on |
| 283 | * Wikimedia Commons. |
| 284 | * (This is not actually implemented yet but would be pretty cool.) |
| 285 | * |
| 286 | * It is recommended to use the empty string if you need a |
| 287 | * placeholder value (ie, if it is the *presence* of the property |
| 288 | * which is important, not the *value* the property is set to). |
| 289 | * |
| 290 | * @note Do not use setUnsortedPageProperty() to set a property |
| 291 | * which is only used in a context where the ParserOutput object |
| 292 | * itself is already available, for example a normal page |
| 293 | * view. There is no need to save such a property in the database |
| 294 | * since the text is already parsed; use ::setExtensionData() |
| 295 | * instead. |
| 296 | * |
| 297 | * @par Example: |
| 298 | * @code |
| 299 | * $parser->getOutput()->setExtensionData( 'my_ext_foo', '...' ); |
| 300 | * @endcode |
| 301 | * |
| 302 | * And then later, in the OutputPageParserOutput hook or similar: |
| 303 | * |
| 304 | * @par Example: |
| 305 | * @code |
| 306 | * $output->getExtensionData( 'my_ext_foo' ); |
| 307 | * @endcode |
| 308 | * |
| 309 | * @param string $propName The name of the page property |
| 310 | * @param string $value Optional value; defaults to the empty string. |
| 311 | * @since 1.42 |
| 312 | */ |
| 313 | public function setUnsortedPageProperty( string $propName, string $value = '' ): void; |
| 314 | |
| 315 | /** |
| 316 | * Attaches arbitrary data to this content. This can be used to |
| 317 | * store some information for later use during page output. The |
| 318 | * data will be cached along with the parsed page, but unlike data |
| 319 | * set using set*PageProperty(), it is not recorded in the |
| 320 | * database. |
| 321 | * |
| 322 | * To use setExtensionData() to pass extension information from a |
| 323 | * hook inside the parser to a hook in the page output, use this |
| 324 | * in the parser hook: |
| 325 | * |
| 326 | * @par Example: |
| 327 | * @code |
| 328 | * $parser->getOutput()->setExtensionData( 'my_ext_foo', '...' ); |
| 329 | * @endcode |
| 330 | * |
| 331 | * And then later, in OutputPageParserOutput or similar: |
| 332 | * |
| 333 | * @par Example: |
| 334 | * @code |
| 335 | * $output->getExtensionData( 'my_ext_foo' ); |
| 336 | * @endcode |
| 337 | * |
| 338 | * @note Only scalar values, e.g. numbers, strings, arrays or |
| 339 | * MediaWiki\Json\JsonUnserializable instances are supported as a |
| 340 | * value. Attempt to set other class instance as a extension data |
| 341 | * will break ParserCache for the page. |
| 342 | * |
| 343 | * @note As with ::setJsConfigVar(), setting a page property to multiple |
| 344 | * conflicting values during the parse is not supported. |
| 345 | * |
| 346 | * @param string $key The key for accessing the data. Extensions |
| 347 | * should take care to avoid conflicts in naming keys. It is |
| 348 | * suggested to use the extension's name as a prefix. Keys |
| 349 | * beginning with `mw-` are reserved for use by mediawiki core. |
| 350 | * |
| 351 | * @param mixed $value The value to set. |
| 352 | * Setting a value to null is equivalent to removing the value. |
| 353 | */ |
| 354 | public function setExtensionData( string $key, $value ): void; |
| 355 | |
| 356 | /** |
| 357 | * Appends arbitrary data to this ParserObject. This can be used |
| 358 | * to store some information in the ParserOutput object for later |
| 359 | * use during page output. The data will be cached along with the |
| 360 | * ParserOutput object, but unlike data set using |
| 361 | * set*PageProperty(), it is not recorded in the database. |
| 362 | * |
| 363 | * See ::setExtensionData() for more details on rationale and use. |
| 364 | * |
| 365 | * In order to provide for out-of-order/asynchronous/incremental |
| 366 | * parsing, this method appends values to a set. See |
| 367 | * ::setExtensionData() for the flag-like version of this method. |
| 368 | * |
| 369 | * @note Only values which can be array keys are currently supported |
| 370 | * as values. Be aware that array keys which 'look like' numbers are |
| 371 | * converted to ints by PHP, and so if you put in `"0"` as a value you |
| 372 | * will get `[0=>true]` out. |
| 373 | * |
| 374 | * @param string $key The key for accessing the data. Extensions should take care to avoid |
| 375 | * conflicts in naming keys. It is suggested to use the extension's name as a prefix. |
| 376 | * |
| 377 | * @param string|int $value The value to append to the list. |
| 378 | * @param MergeStrategy $strategy Merge strategy; defaults to |
| 379 | * MergeStrategy::UNION. |
| 380 | */ |
| 381 | public function appendExtensionData( |
| 382 | string $key, |
| 383 | string|int $value, |
| 384 | string|MergeStrategy $strategy = MergeStrategy::UNION |
| 385 | ): void; |
| 386 | |
| 387 | /** |
| 388 | * Add a variable to be set in mw.config in JavaScript. |
| 389 | * |
| 390 | * In order to ensure the result is independent of the parse order, the values |
| 391 | * set here must be unique -- that is, you can pass the same $key |
| 392 | * multiple times but ONLY if the $value is identical each time. |
| 393 | * If you want to collect multiple pieces of data under a single key, |
| 394 | * use ::appendJsConfigVar(). |
| 395 | * |
| 396 | * @param string $key Key to use under mw.config |
| 397 | * @param mixed|null $value Value of the configuration variable. |
| 398 | */ |
| 399 | public function setJsConfigVar( string $key, $value ): void; |
| 400 | |
| 401 | /** |
| 402 | * Append a value to a variable to be set in mw.config in JavaScript. |
| 403 | * |
| 404 | * In order to ensure the result is independent of the parse order, |
| 405 | * the value of this key will be an associative array, mapping all of |
| 406 | * the values set under that key to true. (The array is implicitly |
| 407 | * ordered in PHP, but you should treat it as unordered.) |
| 408 | * If you want a non-array type for the key, and can ensure that only |
| 409 | * a single value will be set, you should use ::setJsConfigVar() instead. |
| 410 | * |
| 411 | * @note Only values which can be array keys are currently supported |
| 412 | * as values. Be aware that array keys which 'look like' numbers are |
| 413 | * converted to ints by PHP, and so if you put in `"0"` as a value you |
| 414 | * will get `[0=>true]` out. |
| 415 | * |
| 416 | * @param string $key Key to use under mw.config |
| 417 | * @param string|int $value Value to append to the configuration variable. |
| 418 | * @param MergeStrategy $strategy Merge strategy; defaults to |
| 419 | * MergeStrategy::UNION. |
| 420 | */ |
| 421 | public function appendJsConfigVar( |
| 422 | string $key, |
| 423 | string|int $value, |
| 424 | string|MergeStrategy $strategy = MergeStrategy::UNION |
| 425 | ): void; |
| 426 | |
| 427 | /** |
| 428 | * @see OutputPage::addModules |
| 429 | * @param string[] $modules |
| 430 | * @deprecated use ::appendOutputStrings(::MODULE, ...) |
| 431 | */ |
| 432 | public function addModules( array $modules ): void; |
| 433 | |
| 434 | /** |
| 435 | * @see OutputPage::addModuleStyles |
| 436 | * @param string[] $moduleStyles |
| 437 | * @deprecated use ::appendOutputStrings(::MODULE_STYLE, ...) |
| 438 | */ |
| 439 | public function addModuleStyles( array $moduleStyles ): void; |
| 440 | |
| 441 | /** |
| 442 | * Sets parser limit report data for a key |
| 443 | * |
| 444 | * The key is used as the prefix for various messages used for formatting: |
| 445 | * - $key: The label for the field in the limit report |
| 446 | * - $key-value-text: Message used to format the value in the "NewPP limit |
| 447 | * report" HTML comment. If missing, uses $key-format. |
| 448 | * - $key-value-html: Message used to format the value in the preview |
| 449 | * limit report table. If missing, uses $key-format. |
| 450 | * - $key-value: Message used to format the value. If missing, uses "$1". |
| 451 | * |
| 452 | * Note that all values are interpreted as wikitext, and so should be |
| 453 | * encoded with htmlspecialchars() as necessary, but should avoid complex |
| 454 | * HTML for sanity of display in the "NewPP limit report" comment. |
| 455 | * |
| 456 | * @param string $key Message key |
| 457 | * @param mixed $value Appropriate for Message::params() |
| 458 | */ |
| 459 | public function setLimitReportData( string $key, $value ): void; |
| 460 | |
| 461 | /** |
| 462 | * Sets Table of Contents data for this page. |
| 463 | * |
| 464 | * Note that merging of TOCData is not supported; exactly one fragment |
| 465 | * should set TOCData. |
| 466 | * |
| 467 | * @param TOCData $tocData |
| 468 | */ |
| 469 | public function setTOCData( TOCData $tocData ): void; |
| 470 | |
| 471 | /** |
| 472 | * Set the content for an indicator. |
| 473 | * |
| 474 | * @param string $name |
| 475 | * @param string $content |
| 476 | * @param-taint $content exec_html |
| 477 | */ |
| 478 | public function setIndicator( $name, $content ): void; |
| 479 | } |