MediaWikiInsertablesSuggester.php

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<?php
class MediaWikiInsertablesSuggester {
    public function getInsertables( $text ) {
        $insertables = array();

        $matches = array();
        preg_match_all( '/\$[0-9]+/', $text, $matches, PREG_SET_ORDER );
        $new = array_map( function( $match ) {
            return new Insertable( $match[0], $match[0] );
        }, $matches );
        $insertables = array_merge( $insertables, $new );

        $matches = array();
        preg_match_all(
            '/({{((?:PLURAL|GENDER|GRAMMAR):[^|]+)\|).*?(}})/i',
            $text,
            $matches,
            PREG_SET_ORDER
        );
        $new = array_map( function( $match ) {
            return new Insertable( $match[2], $match[1], $match[3] );
        }, $matches );
        $insertables = array_merge( $insertables, $new );

        return $insertables;
    }
}