Matthias Andreas Benkard | 12a5735 | 2021-12-28 18:02:04 +0100 | [diff] [blame^] | 1 | <?php |
| 2 | |
| 3 | /* |
| 4 | * This file is part of Twig. |
| 5 | * |
| 6 | * (c) Fabien Potencier |
| 7 | * |
| 8 | * For the full copyright and license information, please view the LICENSE |
| 9 | * file that was distributed with this source code. |
| 10 | */ |
| 11 | |
| 12 | namespace Twig\Node\Expression; |
| 13 | |
| 14 | use Twig\Compiler; |
| 15 | |
| 16 | class ArrayExpression extends AbstractExpression |
| 17 | { |
| 18 | private $index; |
| 19 | |
| 20 | public function __construct(array $elements, int $lineno) |
| 21 | { |
| 22 | parent::__construct($elements, [], $lineno); |
| 23 | |
| 24 | $this->index = -1; |
| 25 | foreach ($this->getKeyValuePairs() as $pair) { |
| 26 | if ($pair['key'] instanceof ConstantExpression && ctype_digit((string) $pair['key']->getAttribute('value')) && $pair['key']->getAttribute('value') > $this->index) { |
| 27 | $this->index = $pair['key']->getAttribute('value'); |
| 28 | } |
| 29 | } |
| 30 | } |
| 31 | |
| 32 | public function getKeyValuePairs(): array |
| 33 | { |
| 34 | $pairs = []; |
| 35 | foreach (array_chunk($this->nodes, 2) as $pair) { |
| 36 | $pairs[] = [ |
| 37 | 'key' => $pair[0], |
| 38 | 'value' => $pair[1], |
| 39 | ]; |
| 40 | } |
| 41 | |
| 42 | return $pairs; |
| 43 | } |
| 44 | |
| 45 | public function hasElement(AbstractExpression $key): bool |
| 46 | { |
| 47 | foreach ($this->getKeyValuePairs() as $pair) { |
| 48 | // we compare the string representation of the keys |
| 49 | // to avoid comparing the line numbers which are not relevant here. |
| 50 | if ((string) $key === (string) $pair['key']) { |
| 51 | return true; |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | return false; |
| 56 | } |
| 57 | |
| 58 | public function addElement(AbstractExpression $value, AbstractExpression $key = null): void |
| 59 | { |
| 60 | if (null === $key) { |
| 61 | $key = new ConstantExpression(++$this->index, $value->getTemplateLine()); |
| 62 | } |
| 63 | |
| 64 | array_push($this->nodes, $key, $value); |
| 65 | } |
| 66 | |
| 67 | public function compile(Compiler $compiler): void |
| 68 | { |
| 69 | $compiler->raw('['); |
| 70 | $first = true; |
| 71 | foreach ($this->getKeyValuePairs() as $pair) { |
| 72 | if (!$first) { |
| 73 | $compiler->raw(', '); |
| 74 | } |
| 75 | $first = false; |
| 76 | |
| 77 | $compiler |
| 78 | ->subcompile($pair['key']) |
| 79 | ->raw(' => ') |
| 80 | ->subcompile($pair['value']) |
| 81 | ; |
| 82 | } |
| 83 | $compiler->raw(']'); |
| 84 | } |
| 85 | } |