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class PluralFormula in Drupal 9

Same name and namespace in other branches
  1. 8 core/modules/locale/src/PluralFormula.php \Drupal\locale\PluralFormula

Manages the storage of plural formula per language in state.

Hierarchy

Expanded class hierarchy of PluralFormula

See also

\Drupal\locale\PoDatabaseWriter::setHeader()

1 string reference to 'PluralFormula'
locale.services.yml in core/modules/locale/locale.services.yml
core/modules/locale/locale.services.yml
1 service uses PluralFormula
locale.plural.formula in core/modules/locale/locale.services.yml
Drupal\locale\PluralFormula

File

core/modules/locale/src/PluralFormula.php, line 13

Namespace

Drupal\locale
View source
class PluralFormula implements PluralFormulaInterface {

  /**
   * @var \Drupal\Core\Language\LanguageManagerInterface
   */
  protected $languageManager;

  /**
   * @var \Drupal\Core\State\StateInterface
   */
  protected $state;

  /**
   * The plural formula and count keyed by langcode.
   *
   * For example the structure looks like this:
   * @code
   * [
   *   'de' => [
   *     'plurals' => 2,
   *     'formula' => [
   *       // @todo
   *     ]
   *   ],
   * ]
   * @endcode
   * @var array
   */
  protected $formulae;

  /**
   * @param \Drupal\Core\Language\LanguageManagerInterface $language_manager
   * @param \Drupal\Core\State\StateInterface $state
   */
  public function __construct(LanguageManagerInterface $language_manager, StateInterface $state) {
    $this->languageManager = $language_manager;
    $this->state = $state;
  }

  /**
   * {@inheritdoc}
   */
  public function setPluralFormula($langcode, $plural_count, array $formula) {

    // Ensure that the formulae are loaded.
    $this
      ->loadFormulae();
    $this->formulae[$langcode] = [
      'plurals' => $plural_count,
      'formula' => $formula,
    ];
    $this->state
      ->set('locale.translation.formulae', $this->formulae);
    return $this;
  }

  /**
   * {@inheritdoc}
   */
  public function getNumberOfPlurals($langcode = NULL) {

    // Ensure that the formulae are loaded.
    $this
      ->loadFormulae();

    // Set the langcode to use.
    $langcode = $langcode ?: $this->languageManager
      ->getCurrentLanguage()
      ->getId();

    // We assume 2 plurals if there is no explicit information yet.
    if (!isset($this->formulae[$langcode]['plurals'])) {
      return 2;
    }
    return $this->formulae[$langcode]['plurals'];
  }

  /**
   * {@inheritdoc}
   */
  public function getFormula($langcode) {
    $this
      ->loadFormulae();
    return isset($this->formulae[$langcode]['formula']) ? $this->formulae[$langcode]['formula'] : FALSE;
  }

  /**
   * Loads the formulae and stores them on the PluralFormula object if not set.
   *
   * @return array
   */
  protected function loadFormulae() {
    if (!isset($this->formulae)) {
      $this->formulae = $this->state
        ->get('locale.translation.formulae', []);
    }
  }

  /**
   * {@inheritdoc}
   */
  public function reset() {
    $this->formulae = NULL;
    return $this;
  }

}

Members

Namesort descending Modifiers Type Description Overrides
PluralFormula::$formulae protected property The plural formula and count keyed by langcode.
PluralFormula::$languageManager protected property
PluralFormula::$state protected property
PluralFormula::getFormula public function Gets the plural formula for a langcode. Overrides PluralFormulaInterface::getFormula
PluralFormula::getNumberOfPlurals public function Returns the number of plurals supported by a given language. Overrides PluralFormulaInterface::getNumberOfPlurals
PluralFormula::loadFormulae protected function Loads the formulae and stores them on the PluralFormula object if not set.
PluralFormula::reset public function Resets the static formulae cache. Overrides PluralFormulaInterface::reset
PluralFormula::setPluralFormula public function Overrides PluralFormulaInterface::setPluralFormula
PluralFormula::__construct public function