function ContainerBuilder::getExpressionLanguage

File

vendor/symfony/dependency-injection/ContainerBuilder.php, line 1739

Class

ContainerBuilder: ContainerBuilder is a DI container that provides an API to easily describe services.

Namespace

Code

private function getExpressionLanguage() : ExpressionLanguage {
    if (!isset($this->expressionLanguage)) {
        if (!class_exists(Expression::class)) {
            throw new LogicException('Expressions cannot be used without the ExpressionLanguage component. Try running "composer require symfony/expression-language".');
        }
        $this->expressionLanguage = new ExpressionLanguage(null, $this->expressionLanguageProviders, null, $this->getEnv(...));
    }
    return $this->expressionLanguage;
}