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<?php |
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namespace MaxGoryunov\SavingIterator\Src; |
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use ArrayAccess; |
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use Iterator; |
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/** |
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* Adding iterator which stores values in a user provided iterator. |
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* @template TKey |
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* @template TValue |
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* @implements AddingIterator<TKey, TValue> |
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*/ |
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final class OpenAddingIterator implements AddingIterator |
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{ |
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/** |
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* Ctor. |
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* |
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* @phpstan-param Iterator<TKey, TValue>&ArrayAccess<TKey, TValue> $added |
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* @param Iterator&ArrayAccess $added iterator with stored values. |
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*/ |
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public function __construct( |
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/** |
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* Iterator with stored values. |
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* |
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* @phpstan-var Iterator<TKey, TValue>&ArrayAccess<TKey, TValue> |
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* @var Iterator&ArrayAccess |
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*/ |
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private Iterator|ArrayAccess $added |
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) { |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function from(Iterator $source): AddingIterator |
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{ |
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/** |
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* @todo #83:20min Cover that Iterator works with an immutable |
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* iterator. |
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*/ |
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/** |
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* @todo #83:20min Assert that iterator does not add values if they are already stored. |
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*/ |
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$updated = clone $this->added; |
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$updated[$source->key()] ??= $source->current(); |
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return new self($updated); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function current(): mixed |
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{ |
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return $this->added->current(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function key(): mixed |
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{ |
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return $this->added->key(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function next(): void |
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{ |
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$this->added->next(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function valid(): bool |
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{ |
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return $this->added->valid(); |
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} |
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83
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/** |
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* {@inheritDoc} |
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*/ |
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public function rewind(): void |
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{ |
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/** |
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* @todo #83:20min Assert that iterator rewinds original iterator. |
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*/ |
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$this->added->rewind(); |
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} |
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} |
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MaxGoryunov /
saving-iterator
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