LazyLocalizationContext.php

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<?php
namespace MediaWiki\Language;
 
class LazyLocalizationContext implements LocalizationContext {
 
    private $instantiator;
 
    private ?LocalizationContext $context = null;
 
    public function __construct( callable $instantiator ) {
        $this->instantiator = $instantiator;
    }
 
    private function resolve(): LocalizationContext {
        if ( !$this->context ) {
            $this->context = ( $this->instantiator )();
        }
 
        return $this->context;
    }
 
    public function getLanguageCode() {
        return $this->resolve()->getLanguageCode();
    }
 
    public function msg( $key, ...$params ) {
        return $this->resolve()->msg( $key, ...$params );
    }
}