function DefinedTest::__construct

Parameters

AbstractExpression $node:

Overrides TestExpression::__construct

File

vendor/twig/twig/src/Node/Expression/Test/DefinedTest.php, line 45

Class

DefinedTest

Checks if a variable is defined in the current context.

Namespace

Twig\Node\Expression\Test

Code

public function __construct(Node $node, TwigTest|string $name, ?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($node));
    }
    if ($node instanceof NameExpression) {
        $node->setAttribute('is_defined_test', true);
    }
    elseif ($node instanceof GetAttrExpression) {
        $node->setAttribute('is_defined_test', true);
        $this->changeIgnoreStrictCheck($node);
    }
    elseif ($node instanceof BlockReferenceExpression) {
        $node->setAttribute('is_defined_test', true);
    }
    elseif ($node instanceof MacroReferenceExpression) {
        $node->setAttribute('is_defined_test', true);
    }
    elseif ($node instanceof FunctionExpression && 'constant' === $node->getAttribute('name')) {
        $node->setAttribute('is_defined_test', true);
    }
    elseif ($node instanceof ConstantExpression || $node instanceof ArrayExpression) {
        $node = new ConstantExpression(true, $node->getTemplateLine());
    }
    elseif ($node instanceof MethodCallExpression) {
        $node->setAttribute('is_defined_test', true);
    }
    else {
        throw new SyntaxError('The "defined" test only works with simple variables.', $lineno);
    }
    if (\is_string($name) && 'defined' !== $name) {
        trigger_deprecation('twig/twig', '3.12', 'Creating a "DefinedTest" instance with a test name that is not "defined" is deprecated.');
    }
    parent::__construct($node, $name, $arguments, $lineno);
}