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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\Expression; use Twig\Compiler; use Twig\Node\Expression\Unary\StringCastUnary; use Twig\Node\Expression\Variable\ContextVariable; class ArrayExpression extends AbstractExpression { private $index; public function __construct(array $elements, int $lineno) { parent::__construct($elements, [], $lineno); $this->index = -1; foreach ($this->getKeyValuePairs() as $pair) { if ($pair['key'] instanceof ConstantExpression && ctype_digit((string) $pair['key']->getAttribute('value')) && $pair['key']->getAttribute('value') > $this->index) { $this->index = $pair['key']->getAttribute('value'); } } } public function getKeyValuePairs(): array { $pairs = []; foreach (array_chunk($this->nodes, 2) as $pair) { $pairs[] = [ 'key' => $pair[0], 'value' => $pair[1], ]; } return $pairs; } public function hasElement(AbstractExpression $key): bool { foreach ($this->getKeyValuePairs() as $pair) { // we compare the string representation of the keys // to avoid comparing the line numbers which are not relevant here. if ((string) $key === (string) $pair['key']) { return true; } } return false; } public function addElement(AbstractExpression $value, ?AbstractExpression $key = null): void { if (null === $key) { $key = new ConstantExpression(++$this->index, $value->getTemplateLine()); } array_push($this->nodes, $key, $value); } public function compile(Compiler $compiler): void { $keyValuePairs = $this->getKeyValuePairs(); $needsArrayMergeSpread = \PHP_VERSION_ID < 80100 && $this->hasSpreadItem($keyValuePairs); if ($needsArrayMergeSpread) { $compiler->raw('CoreExtension::merge('); } $compiler->raw('['); $first = true; $reopenAfterMergeSpread = false; $nextIndex = 0; foreach ($keyValuePairs as $pair) { if ($reopenAfterMergeSpread) { $compiler->raw(', ['); $reopenAfterMergeSpread = false; } if ($needsArrayMergeSpread && $pair['value']->hasAttribute('spread')) { $compiler->raw('], ')->subcompile($pair['value']); $first = true; $reopenAfterMergeSpread = true; continue; } if (!$first) { $compiler->raw(', '); } $first = false; if ($pair['value']->hasAttribute('spread') && !$needsArrayMergeSpread) { $compiler->raw('...')->subcompile($pair['value']); ++$nextIndex; } else { $key = null; if ($pair['key'] instanceof ContextVariable) { $pair['key'] = new StringCastUnary($pair['key'], $pair['key']->getTemplateLine()); } if ($pair['key'] instanceof TempNameExpression) { $key = $pair['key']->getAttribute('name'); $pair['key'] = new ConstantExpression($key, $pair['key']->getTemplateLine()); } if ($pair['key'] instanceof ConstantExpression) { $key = $pair['key']->getAttribute('value'); } if ($nextIndex !== $key) { $compiler ->subcompile($pair['key']) ->raw(' => ') ; } ++$nextIndex; $compiler->subcompile($pair['value']); } } if (!$reopenAfterMergeSpread) { $compiler->raw(']'); } if ($needsArrayMergeSpread) { $compiler->raw(')'); } } private function hasSpreadItem(array $pairs): bool { foreach ($pairs as $pair) { if ($pair['value']->hasAttribute('spread')) { return true; } } return false; } }
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