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<?php |
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declare(strict_types=1); |
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namespace StraTDeS\VO\Collection; |
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use ArrayAccess; |
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use Countable; |
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use InvalidArgumentException; |
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use Iterator; |
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use TypeError; |
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class StringCollection implements Countable, ArrayAccess, Iterator |
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{ |
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protected array $items; |
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protected int $position; |
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protected function __construct() |
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{ |
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$this->items = []; |
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$this->position = 0; |
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} |
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public static function create(): self |
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{ |
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return new static(); |
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} |
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public function items(): array |
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{ |
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return $this->items; |
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} |
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public function current(): string |
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{ |
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return $this->items[$this->position]; |
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} |
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public function next(): void |
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{ |
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$this->position++; |
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} |
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public function key(): int |
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{ |
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return $this->position; |
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} |
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public function valid(): bool |
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{ |
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return isset($this->items[$this->position]); |
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} |
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public function rewind(): void |
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{ |
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$this->position = 0; |
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} |
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public function offsetExists($offset): bool |
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{ |
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return isset($this->items[$offset]); |
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} |
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public function offsetGet($offset): string |
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{ |
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return $this->items[$offset]; |
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} |
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public function offsetSet($offset, $value): void |
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{ |
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$this->checkValueIsValidForCollection($value); |
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$this->checkOffsetIsValidForCollection($offset); |
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$this->items[$offset] = $value; |
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} |
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public function offsetUnset($offset): void |
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{ |
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unset($this->items[$offset]); |
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} |
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public function count(): int |
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{ |
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return count($this->items); |
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} |
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protected function checkValueIsValidForCollection($value): void |
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{ |
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if (is_string($value) !== true) { |
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throw new TypeError('Provided value has to be string'); |
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} |
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} |
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protected function checkOffsetIsValidForCollection($offset): void |
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{ |
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if (is_int($offset) !== true) { |
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throw new TypeError('Provided offset has to be int'); |
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} |
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if ($offset < 0) { |
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throw new InvalidArgumentException('Provided offset has to be greater than -1'); |
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} |
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} |
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public function add($item): self |
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{ |
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$this->checkValueIsValidForCollection($item); |
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$this->items[] = $item; |
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return $this; |
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} |
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} |
stratdes /
vo
