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