66 lines
1.7 KiB
PHP
66 lines
1.7 KiB
PHP
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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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 Symfony\Component\ExpressionLanguage\Node;
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use Symfony\Component\ExpressionLanguage\Compiler;
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/**
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* @author Fabien Potencier <fabien@symfony.com>
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*
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* @internal
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*/
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class NullCoalesceNode extends Node
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{
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public function __construct(Node $expr1, Node $expr2)
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{
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parent::__construct(['expr1' => $expr1, 'expr2' => $expr2]);
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}
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public function compile(Compiler $compiler): void
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{
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$compiler
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->raw('((')
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->compile($this->nodes['expr1'])
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->raw(') ?? (')
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->compile($this->nodes['expr2'])
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->raw('))')
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;
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}
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public function evaluate(array $functions, array $values): mixed
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{
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if ($this->nodes['expr1'] instanceof GetAttrNode) {
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$this->addNullCoalesceAttributeToGetAttrNodes($this->nodes['expr1']);
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}
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return $this->nodes['expr1']->evaluate($functions, $values) ?? $this->nodes['expr2']->evaluate($functions, $values);
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}
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public function toArray(): array
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{
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return ['(', $this->nodes['expr1'], ') ?? (', $this->nodes['expr2'], ')'];
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}
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private function addNullCoalesceAttributeToGetAttrNodes(Node $node): void
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{
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if (!$node instanceof GetAttrNode) {
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return;
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}
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$node->attributes['is_null_coalesce'] = true;
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foreach ($node->nodes as $node) {
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$this->addNullCoalesceAttributeToGetAttrNodes($node);
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}
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}
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}
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