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<?php |
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|
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/* |
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* This file is part of Twig. |
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* |
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* (c) Fabien Potencier |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace ElementorDeps\Twig\Node\Expression\Test; |
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|
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use ElementorDeps\Twig\Compiler; |
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use ElementorDeps\Twig\Error\SyntaxError; |
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use ElementorDeps\Twig\Node\Expression\ArrayExpression; |
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use ElementorDeps\Twig\Node\Expression\BlockReferenceExpression; |
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use ElementorDeps\Twig\Node\Expression\ConstantExpression; |
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use ElementorDeps\Twig\Node\Expression\FunctionExpression; |
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use ElementorDeps\Twig\Node\Expression\GetAttrExpression; |
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use ElementorDeps\Twig\Node\Expression\MethodCallExpression; |
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use ElementorDeps\Twig\Node\Expression\NameExpression; |
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use ElementorDeps\Twig\Node\Expression\TestExpression; |
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use ElementorDeps\Twig\Node\Node; |
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/** |
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* Checks if a variable is defined in the current context. |
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* |
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* {# defined works with variable names and variable attributes #} |
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* {% if foo is defined %} |
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* {# ... #} |
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* {% endif %} |
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* |
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* @author Fabien Potencier <fabien@symfony.com> |
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*/ |
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class DefinedTest extends TestExpression |
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{ |
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public function __construct(Node $node, string $name, ?Node $arguments, int $lineno) |
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{ |
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if ($node instanceof NameExpression) { |
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$node->setAttribute('is_defined_test', \true); |
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} elseif ($node instanceof GetAttrExpression) { |
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$node->setAttribute('is_defined_test', \true); |
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$this->changeIgnoreStrictCheck($node); |
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} elseif ($node instanceof BlockReferenceExpression) { |
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$node->setAttribute('is_defined_test', \true); |
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} elseif ($node instanceof FunctionExpression && 'constant' === $node->getAttribute('name')) { |
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$node->setAttribute('is_defined_test', \true); |
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} elseif ($node instanceof ConstantExpression || $node instanceof ArrayExpression) { |
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$node = new ConstantExpression(\true, $node->getTemplateLine()); |
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} elseif ($node instanceof MethodCallExpression) { |
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$node->setAttribute('is_defined_test', \true); |
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} else { |
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throw new SyntaxError('The "defined" test only works with simple variables.', $lineno); |
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} |
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parent::__construct($node, $name, $arguments, $lineno); |
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} |
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private function changeIgnoreStrictCheck(GetAttrExpression $node) |
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{ |
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$node->setAttribute('optimizable', \false); |
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$node->setAttribute('ignore_strict_check', \true); |
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if ($node->getNode('node') instanceof GetAttrExpression) { |
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$this->changeIgnoreStrictCheck($node->getNode('node')); |
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} |
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} |
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public function compile(Compiler $compiler) : void |
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{ |
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$compiler->subcompile($this->getNode('node')); |
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} |
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} |
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