class CheckToStringNode

Checks if casting an expression to __toString() is allowed by the sandbox.

For instance, when there is a simple Print statement, like {{ article }}, and if the sandbox is enabled, we need to check that the __toString() method is allowed if 'article' is an object. The same goes for {{ article|upper }} or {{ random(article) }}

@author Fabien Potencier <fabien@symfony.com>

Hierarchy

• class \Twig\Node\Node implements \Twig\Node\Countable, \Twig\Node\IteratorAggregate
  • class \Twig\Node\Expression\AbstractExpression extends \Twig\Node\Node
    • class \Twig\Node\CheckToStringNode extends \Twig\Node\Expression\AbstractExpression

Expanded class hierarchy of CheckToStringNode

File

vendor/twig/twig/src/Node/CheckToStringNode.php, line 28

Namespace

class CheckToStringNode extends AbstractExpression {
    public function __construct(AbstractExpression $expr) {
        parent::__construct([
            'expr' => $expr,
        ], [], $expr->getTemplateLine());
    }
    public function compile(Compiler $compiler) : void {
        $expr = $this->getNode('expr');
        $compiler->raw('$this->sandbox->ensureToStringAllowed(')
            ->subcompile($expr)
            ->raw(', ')
            ->repr($expr->getTemplateLine())
            ->raw(', $this->source)');
    }

}

Members