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| <?php | |
| declare( strict_types = 1 ); | |
| namespace Wikimedia\Parsoid\Html2Wt\ConstrainedText; | |
| /** | |
| * This subclass allows specification of a regular expression for | |
| * acceptable (or prohibited) leading (and/or trailing) contexts. | |
| * | |
| * This is an abstract class; it's intended to be subclassed, not | |
| * used directly, and so it not included in the lists of types | |
| * tried by `fromSelSer`. | |
| */ | |
| abstract class RegExpConstrainedText extends ConstrainedText { | |
| /** @var \Closure(string):bool */ | |
| public $prefixMatcher; | |
| /** @var \Closure(string):bool */ | |
| public $suffixMatcher; | |
| /** | |
| * @param array $args | |
| */ | |
| protected function __construct( array $args ) { | |
| parent::__construct( $args ); | |
| $this->prefix = $this->prefix ?? '<nowiki/>'; | |
| $this->suffix = $this->suffix ?? '<nowiki/>'; | |
| // functions which return true if escape prefix/suffix need to be added | |
| $matcher = static function ( string $re, bool $invert ): callable { | |
| return ( static function ( string $context ) use ( $re, $invert ): bool { | |
| return ( preg_match( $re, $context ) ) ? !$invert : $invert; | |
| } ); | |
| }; | |
| $false = static function ( string $context ): bool { | |
| return false; | |
| }; | |
| $this->prefixMatcher = | |
| ( $args['goodPrefix'] ?? false ) ? | |
| $matcher( $args['goodPrefix'], true ) : | |
| ( ( $args['badPrefix'] ?? false ) ? | |
| $matcher( $args['badPrefix'], false ) : $false ); | |
| $this->suffixMatcher = | |
| ( $args['goodSuffix'] ?? false ) ? | |
| $matcher( $args['goodSuffix'], true ) : | |
| ( ( $args['badSuffix'] ?? false ) ? | |
| $matcher( $args['badSuffix'], false ) : $false ); | |
| } | |
| /** @inheritDoc */ | |
| public function escape( State $state ): Result { | |
| $result = new Result( $this->text ); | |
| if ( call_user_func( $this->prefixMatcher, $state->leftContext ) ) { | |
| $result->prefix = $this->prefix; | |
| } | |
| if ( call_user_func( $this->suffixMatcher, $state->rightContext ) ) { | |
| $result->suffix = $this->suffix; | |
| } | |
| return $result; | |
| } | |
| } |