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File Content: `NullCoalesceBinary.php`

<?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\Binary;

use Twig\Compiler;
use Twig\Node\EmptyNode;
use Twig\Node\Expression\AbstractExpression;
use Twig\Node\Expression\BlockReferenceExpression;
use Twig\Node\Expression\OperatorEscapeInterface;
use Twig\Node\Expression\Test\DefinedTest;
use Twig\Node\Expression\Test\NullTest;
use Twig\Node\Expression\Unary\NotUnary;
use Twig\Node\Node;
use Twig\TwigTest;

final class NullCoalesceBinary extends AbstractBinary implements OperatorEscapeInterface
{
    /**
     * @param AbstractExpression $left
     * @param AbstractExpression $right
     */
    public function __construct(Node $left, Node $right, int $lineno)
    {
        parent::__construct($left, $right, $lineno);

        $test = new DefinedTest(clone $left, new TwigTest('defined'), new EmptyNode(), $left->getTemplateLine());
        // for "block()", we don't need the null test as the return value is always a string
        if (!$left instanceof BlockReferenceExpression) {
            $test = new AndBinary(
                $test,
                new NotUnary(new NullTest($left, new TwigTest('null'), new EmptyNode(), $left->getTemplateLine()), $left->getTemplateLine()),
                $left->getTemplateLine(),
            );
        }

        $left->setAttribute('always_defined', true);
        $this->setNode('test', $test);
    }

    public function compile(Compiler $compiler): void
    {
        $compiler
            ->raw('((')
            ->subcompile($this->getNode('test'))
            ->raw(') ? (')
            ->subcompile($this->getNode('left'))
            ->raw(') : (')
            ->subcompile($this->getNode('right'))
            ->raw('))')
        ;
    }

    public function operator(Compiler $compiler): Compiler
    {
        return $compiler->raw('??');
    }

    public function getOperandNamesToEscape(): array
    {
        return ['left', 'right'];
    }
}

Name	Size	Permission
AbstractBinary.php	1642 bytes	0644
AddBinary.php	515 bytes	0644
AndBinary.php	512 bytes	0644
BinaryInterface.php	438 bytes	0644
BitwiseAndBinary.php	522 bytes	0644
BitwiseOrBinary.php	521 bytes	0644
BitwiseXorBinary.php	522 bytes	0644
ConcatBinary.php	518 bytes	0644
DivBinary.php	515 bytes	0644
ElvisBinary.php	1346 bytes	0644
EndsWithBinary.php	967 bytes	0644
EqualBinary.php	898 bytes	0644
FloorDivBinary.php	670 bytes	0644
GreaterBinary.php	899 bytes	0644
GreaterEqualBinary.php	904 bytes	0644
HasEveryBinary.php	794 bytes	0644
HasSomeBinary.php	792 bytes	0644
InBinary.php	776 bytes	0644
LessBinary.php	897 bytes	0644
LessEqualBinary.php	901 bytes	0644
MatchesBinary.php	1434 bytes	0644
ModBinary.php	515 bytes	0644
MulBinary.php	515 bytes	0644
NotEqualBinary.php	901 bytes	0644
NotInBinary.php	784 bytes	0644
NullCoalesceBinary.php	2099 bytes	0644
OrBinary.php	511 bytes	0644
PowerBinary.php	496 bytes	0644
RangeBinary.php	763 bytes	0644
SpaceshipBinary.php	501 bytes	0644
StartsWithBinary.php	971 bytes	0644
SubBinary.php	515 bytes	0644
XorBinary.php	513 bytes	0644

File Content: NullCoalesceBinary.php

File Content: `NullCoalesceBinary.php`