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SetNode.php
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<?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; use Twig\Compiler; use Twig\Node\Expression\ConstantExpression; /** * Represents a set node. * * @author Fabien Potencier <fabien@symfony.com> */ class SetNode extends Node implements NodeCaptureInterface { public function __construct(bool $capture, Node $names, Node $values, int $lineno, string $tag = null) { parent::__construct(['names' => $names, 'values' => $values], ['capture' => $capture, 'safe' => false], $lineno, $tag); /* * Optimizes the node when capture is used for a large block of text. * * {% set foo %}foo{% endset %} is compiled to $context['foo'] = new Twig\Markup("foo"); */ if ($this->getAttribute('capture')) { $this->setAttribute('safe', true); $values = $this->getNode('values'); if ($values instanceof TextNode) { $this->setNode('values', new ConstantExpression($values->getAttribute('data'), $values->getTemplateLine())); $this->setAttribute('capture', false); } } } public function compile(Compiler $compiler): void { $compiler->addDebugInfo($this); if (\count($this->getNode('names')) > 1) { $compiler->write('list('); foreach ($this->getNode('names') as $idx => $node) { if ($idx) { $compiler->raw(', '); } $compiler->subcompile($node); } $compiler->raw(')'); } else { if ($this->getAttribute('capture')) { if ($compiler->getEnvironment()->isDebug()) { $compiler->write("ob_start();\n"); } else { $compiler->write("ob_start(function () { return ''; });\n"); } $compiler ->subcompile($this->getNode('values')) ; } $compiler->subcompile($this->getNode('names'), false); if ($this->getAttribute('capture')) { $compiler->raw(" = ('' === \$tmp = ob_get_clean()) ? '' : new Markup(\$tmp, \$this->env->getCharset())"); } } if (!$this->getAttribute('capture')) { $compiler->raw(' = '); if (\count($this->getNode('names')) > 1) { $compiler->write('['); foreach ($this->getNode('values') as $idx => $value) { if ($idx) { $compiler->raw(', '); } $compiler->subcompile($value); } $compiler->raw(']'); } else { if ($this->getAttribute('safe')) { $compiler ->raw("('' === \$tmp = ") ->subcompile($this->getNode('values')) ->raw(") ? '' : new Markup(\$tmp, \$this->env->getCharset())") ; } else { $compiler->subcompile($this->getNode('values')); } } } $compiler->raw(";\n"); } }