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<?php |
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/** |
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* @author Maxim Sokolovsky |
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*/ |
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namespace WS\Utils\Collections; |
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abstract class AbstractCollection implements Collection |
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{ |
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protected $elements = []; |
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protected $pointer = -1; |
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public function __construct(?array $elements = null) |
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{ |
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if ($elements === null) { |
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return; |
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} |
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$this->setElements($elements); |
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} |
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public static function of(...$elements): self |
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{ |
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return new static($elements ?: null); |
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} |
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public function add($element): bool |
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{ |
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if ($this->pointer === PHP_INT_MAX) { |
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return false; |
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} |
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$this->pointer++; |
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$this->elements[] = $element; |
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$this->afterElementAdd($element); |
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return true; |
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} |
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public function addAll(iterable $elements): bool |
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{ |
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foreach ($elements as $element) { |
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$this->elements[] = $element; |
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$this->afterElementAdd($element); |
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} |
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$newPointer = count($this->elements) - 1; |
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if ($newPointer > PHP_INT_MAX) { |
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$this->elements = array_slice($this->elements, 0, $this->pointer); |
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} else { |
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$this->pointer = $newPointer; |
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} |
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return true; |
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} |
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public function merge(Collection $collection): bool |
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{ |
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return $this->addAll($collection->toArray()); |
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} |
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public function clear(): void |
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{ |
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$this->setElements([]); |
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} |
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public function contains($element): bool |
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{ |
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return in_array($element, $this->elements, true); |
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} |
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public function equals(Collection $collection): bool |
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{ |
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return $this->toArray() === $collection->toArray(); |
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} |
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public function size(): int |
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{ |
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return $this->pointer + 1; |
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} |
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public function isEmpty(): bool |
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{ |
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return $this->pointer === -1; |
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} |
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227 |
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public function toArray(): array |
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{ |
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return $this->elements; |
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} |
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public function getIterator() |
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{ |
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yield from $this->toArray(); |
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} |
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public function copy(): Collection |
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{ |
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return clone $this; |
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} |
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protected function setElements(array $elements): void |
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{ |
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$this->elements = array_values($elements); |
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$this->pointer = count($elements) - 1; |
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$this->afterElementsSet(); |
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} |
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10 |
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protected function getElements(): array |
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{ |
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return $this->elements; |
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} |
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abstract protected function afterElementAdd($element): void; |
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abstract protected function afterElementsSet(): void; |
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113
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abstract public function stream(): Stream; |
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} |
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worksolutions /
php-collections
