Файл: upload/core/vendor/twig/twig/src/Node/Expression/Binary/NullCoalesceBinary.php
Строк: 79
<?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 TwigNodeExpressionBinary;
use TwigCompiler;
use TwigNodeEmptyNode;
use TwigNodeExpressionAbstractExpression;
use TwigNodeExpressionBlockReferenceExpression;
use TwigNodeExpressionOperatorEscapeInterface;
use TwigNodeExpressionTestDefinedTest;
use TwigNodeExpressionTestNullTest;
use TwigNodeExpressionUnaryNotUnary;
use TwigNodeNode;
use TwigTwigTest;
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'];
}
}