<?php

namespace Twig\Node\Expression\Test;

use Twig\Compiler;
use Twig\Error\SyntaxError;
use Twig\Node\Expression\ArrayExpression;
use Twig\Node\Expression\BlockReferenceExpression;
use Twig\Node\Expression\ConstantExpression;
use Twig\Node\Expression\FunctionExpression;
use Twig\Node\Expression\GetAttrExpression;
use Twig\Node\Expression\MethodCallExpression;
use Twig\Node\Expression\NameExpression;
use Twig\Node\Expression\TestExpression;
use Twig\Node\Node;

/**
 * Checks if a variable is defined in the current context.
 *
 *    {# defined works with variable names and variable attributes #}
 *    {% if foo is defined %}
 *        {# ... #}
 *    {% endif %}
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class DefinedTest extends TestExpression
{
    public function __construct(Node $node, string $name, ?Node $arguments, int $lineno)
    {
        if ($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 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);
        }

        parent::__construct($node, $name, $arguments, $lineno);
    }

    private function changeIgnoreStrictCheck(GetAttrExpression $node)
    {
        $node->setAttribute('optimizable', false);
        $node->setAttribute('ignore_strict_check', true);

        if ($node->getNode('node') instanceof GetAttrExpression) {
            $this->changeIgnoreStrictCheck($node->getNode('node'));
        }
    }

    public function compile(Compiler $compiler)
    {
        $compiler->subcompile($this->getNode('node'));
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----MTUwMzcyMzEzOTg2MjAxNSA5OTI0NjU5OTI5OTczMyA3MDE5NjA0Nzc3NjQxNjY2