PrintNode.php

<?php


/*
 * This file is part of Twig.
 *
 * (c) Fabien Potencier
 * (c) Armin Ronacher
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace Twig\Node;

use Twig\Attribute\YieldReady;
use Twig\Compiler;
use Twig\Node\Expression\AbstractExpression;

/**
 * Represents a node that outputs an expression.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class PrintNode extends Node implements NodeOutputInterface {
    public function __construct(AbstractExpression $expr, int $lineno) {
        parent::__construct([
            'expr' => $expr,
        ], [], $lineno);
    }
    public function compile(Compiler $compiler) : void {
        
        /** @var AbstractExpression */
        $expr = $this->getNode('expr');
        $compiler->addDebugInfo($this)
            ->write($expr->isGenerator() ? 'yield from ' : 'yield ')
            ->subcompile($expr)
            ->raw(";\n");
    }

}