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<?php /* * This file is part of Twig. * * (c) Fabien Potencier * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Twig\Node\Expression\Filter; use Twig\Attribute\FirstClassTwigCallableReady; use Twig\Compiler; use Twig\Extension\CoreExtension; use Twig\Node\EmptyNode; use Twig\Node\Expression\AbstractExpression; use Twig\Node\Expression\ConstantExpression; use Twig\Node\Expression\FilterExpression; use Twig\Node\Expression\GetAttrExpression; use Twig\Node\Expression\Ternary\ConditionalTernary; use Twig\Node\Expression\Test\DefinedTest; use Twig\Node\Expression\Variable\ContextVariable; use Twig\Node\Node; use Twig\TwigFilter; use Twig\TwigTest; /** * Returns the value or the default value when it is undefined or empty. * * {{ var.foo|default('foo item on var is not defined') }} * * @author Fabien Potencier <fabien@symfony.com> */ class DefaultFilter extends FilterExpression { /** * @param AbstractExpression $node */ #[FirstClassTwigCallableReady] public function __construct(Node $node, TwigFilter|ConstantExpression $filter, Node $arguments, int $lineno) { if (!$node instanceof AbstractExpression) { trigger_deprecation('twig/twig', '3.15', 'Not passing a "%s" instance to the "node" argument of "%s" is deprecated ("%s" given).', AbstractExpression::class, static::class, \get_class($node)); } if ($filter instanceof TwigFilter) { $name = $filter->getName(); $default = new FilterExpression($node, $filter, $arguments, $node->getTemplateLine()); } else { $name = $filter->getAttribute('value'); $default = new FilterExpression($node, new TwigFilter('default', [CoreExtension::class, 'default']), $arguments, $node->getTemplateLine()); } if ('default' === $name && ($node instanceof ContextVariable || $node instanceof GetAttrExpression)) { $test = new DefinedTest(clone $node, new TwigTest('defined'), new EmptyNode(), $node->getTemplateLine()); $false = \count($arguments) ? $arguments->getNode('0') : new ConstantExpression('', $node->getTemplateLine()); $node = new ConditionalTernary($test, $default, $false, $node->getTemplateLine()); } else { $node = $default; } parent::__construct($node, $filter, $arguments, $lineno); } public function compile(Compiler $compiler): void { $compiler->subcompile($this->getNode('node')); } }
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