LazyLocalizationContext.php
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LazyLocalizationContext.php
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	<?php
	/**
	* @license GPL-2.0-or-later
	* @file
	*/

	namespace MediaWiki\Language;

	/**
	* Wrapper for injecting a LocalizationContext with lazy initialization.
	*
	* @since 1.42
	* @ingroup Language
	*/
	class LazyLocalizationContext implements LocalizationContext {

	/** @var callable */
	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;
	}

	/** @inheritDoc */
	public function getLanguageCode() {
	return $this->resolve()->getLanguageCode();
	}

	/** @inheritDoc */
	public function msg( $key, ...$params ) {
	return $this->resolve()->msg( $key, ...$params );
	}
	}