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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Celema\Boiler\Proxy; |
| 6 | |
| 7 | use Celema\Boiler\Contract\Wrapper; |
| 8 | use Generator; |
| 9 | use IteratorAggregate; |
| 10 | use JsonSerializable; |
| 11 | use Override; |
| 12 | use Stringable; |
| 13 | use Traversable; |
| 14 | |
| 15 | /** |
| 16 | * Wraps a traversable value. A loop gets its wrapped items, and an object such |
| 17 | * as a collection or a menu item with children keeps its properties and |
| 18 | * methods, as with ObjectProxy. The proxy's own methods take precedence over |
| 19 | * same-named methods of the object. |
| 20 | * |
| 21 | * @api |
| 22 | * |
| 23 | * @template-implements IteratorAggregate<mixed, mixed> |
| 24 | * @implements Proxy<Traversable<mixed, mixed>> |
| 25 | */ |
| 26 | final class IteratorProxy implements IteratorAggregate, JsonSerializable, Proxy, Stringable |
| 27 | { |
| 28 | use ObjectAccess; |
| 29 | use RefusesJson; |
| 30 | |
| 31 | /** |
| 32 | * @param Traversable<mixed, mixed> $value |
| 33 | * @param bool $safe whether the object's string conversion is safe HTML and skips escaping |
| 34 | */ |
| 35 | public function __construct( |
| 36 | private readonly Traversable $value, |
| 37 | private readonly Wrapper $wrapper, |
| 38 | private readonly bool $safe = false, |
| 39 | ) {} |
| 40 | |
| 41 | /** |
| 42 | * Traverses the wrapped value anew on every loop, like a native foreach: |
| 43 | * an IteratorAggregate hands out a fresh iterator each time, while an |
| 44 | * Iterator or a generator keeps its single cursor. Keys are wrapped like |
| 45 | * values, since a template can output either. |
| 46 | * |
| 47 | * @return Generator<mixed, mixed> |
| 48 | */ |
| 49 | #[Override] |
| 50 | public function getIterator(): Generator |
| 51 | { |
| 52 | /** |
| 53 | * @var mixed $key |
| 54 | * @var mixed $item |
| 55 | */ |
| 56 | foreach ($this->value as $key => $item) { |
| 57 | yield $this->wrapper->wrap($key) => $this->wrapper->wrap($item); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | /** @return Traversable<mixed, mixed> */ |
| 62 | #[Override] |
| 63 | public function unwrap(): Traversable |
| 64 | { |
| 65 | return $this->value; |
| 66 | } |
| 67 | |
| 68 | #[Override] |
| 69 | public function is(mixed $other): bool |
| 70 | { |
| 71 | return $this->value === ($other instanceof Proxy ? $other->unwrap() : $other); |
| 72 | } |
| 73 | |
| 74 | /** @param ArrayProxy|array<array-key, mixed> $haystack */ |
| 75 | #[Override] |
| 76 | public function in(ArrayProxy|array $haystack): bool |
| 77 | { |
| 78 | if ($haystack instanceof ArrayProxy) { |
| 79 | $haystack = $haystack->unwrap(); |
| 80 | } |
| 81 | |
| 82 | /** @var mixed $item */ |
| 83 | foreach ($haystack as $item) { |
| 84 | if ($this->is($item)) { |
| 85 | return true; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | return false; |
| 90 | } |
| 91 | |
| 92 | public function toArray(): ArrayProxy |
| 93 | { |
| 94 | return new ArrayProxy(iterator_to_array($this->value), $this->wrapper); |
| 95 | } |
| 96 | } |