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Fix iterable key and value type - prefer generic type variables inste…
…ad of key()/current() typehints
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,124 @@ | ||
| <?php | ||
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| declare(strict_types=1); | ||
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| namespace Bug5817; | ||
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| use ArrayAccess; | ||
| use Countable; | ||
| use DateTimeInterface; | ||
| use Iterator; | ||
| use JsonSerializable; | ||
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| use function count; | ||
| use function current; | ||
| use function key; | ||
| use function next; | ||
| use function PHPStan\Testing\assertType; | ||
|
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| /** | ||
| * @implements ArrayAccess<int, DateTimeInterface> | ||
| * @implements Iterator<int, DateTimeInterface> | ||
| */ | ||
| class MyContainer implements | ||
| ArrayAccess, | ||
| Countable, | ||
| Iterator, | ||
| JsonSerializable | ||
| { | ||
| /** @var array<int, DateTimeInterface> */ | ||
| protected array $items = []; | ||
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| public function add(DateTimeInterface $item, int $offset = null): self | ||
| { | ||
| $this->offsetSet($offset, $item); | ||
| return $this; | ||
| } | ||
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| public function count(): int | ||
| { | ||
| return count($this->items); | ||
| } | ||
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| /** @return DateTimeInterface|false */ | ||
| public function current() | ||
| { | ||
| return current($this->items); | ||
| } | ||
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| /** @return DateTimeInterface|false */ | ||
| public function next() | ||
| { | ||
| return next($this->items); | ||
| } | ||
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| /** @return int|null */ | ||
| public function key(): ?int | ||
| { | ||
| return key($this->items); | ||
| } | ||
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| public function valid(): bool | ||
| { | ||
| return $this->key() !== null; | ||
| } | ||
|
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| /** @return DateTimeInterface|false */ | ||
| public function rewind() | ||
| { | ||
| return reset($this->items); | ||
| } | ||
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| /** @param mixed $offset */ | ||
| public function offsetExists($offset): bool | ||
| { | ||
| return isset($this->items[$offset]); | ||
| } | ||
|
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| /** @param mixed $offset */ | ||
| public function offsetGet($offset): ?DateTimeInterface | ||
| { | ||
| return $this->items[$offset] ?? null; | ||
| } | ||
|
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| /** | ||
| * @param mixed $offset | ||
| * @param mixed $value | ||
| */ | ||
| public function offsetSet($offset, $value): void | ||
| { | ||
| assert($value instanceof DateTimeInterface); | ||
| if ($offset === null) { // append | ||
| $this->items[] = $value; | ||
| } else { | ||
| $this->items[$offset] = $value; | ||
| } | ||
| } | ||
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| /** @param mixed $offset */ | ||
| public function offsetUnset($offset): void | ||
| { | ||
| unset($this->items[$offset]); | ||
| } | ||
|
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| /** @return DateTimeInterface[] */ | ||
| public function jsonSerialize(): array | ||
| { | ||
| return $this->items; | ||
| } | ||
| } | ||
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| class Foo | ||
| { | ||
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| public function doFoo() | ||
| { | ||
| $container = (new MyContainer())->add(new \DateTimeImmutable()); | ||
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| foreach ($container as $k => $item) { | ||
| assertType('int', $k); | ||
| assertType(DateTimeInterface::class, $item); | ||
| } | ||
| } | ||
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| } |