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<?php |
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declare(strict_types=1); |
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namespace Spatie\Typed; |
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use Iterator; |
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use ArrayAccess; |
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class Tuple implements ArrayAccess |
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{ |
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use ValidatesType; |
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/** @var \Spatie\Typed\Type[] */ |
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private $types; |
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/** @var @var array */ |
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private $data; |
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public function __construct(Type ...$types) |
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{ |
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$this->types = $types; |
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} |
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public function set(array $data): self |
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{ |
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$iterator = $this->createIterator($data); |
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foreach ($iterator as $key => ['type' => $type, 'value' => $value]) { |
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$data[$key] = $this->validateType($type, $value); |
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} |
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$this->data = $data; |
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return $this; |
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} |
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public function offsetGet($offset) |
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{ |
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return isset($this->data[$offset]) ? $this->data[$offset] : null; |
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} |
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public function offsetSet($offset, $value) |
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{ |
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if ($offset === null || ! is_numeric($offset)) { |
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throw WrongType::fromMessage('You must specify a numeric offset'); |
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} |
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$type = $this->types[$offset] ?? null; |
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if (! $type) { |
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throw WrongType::fromMessage("No type was configured for this tuple at offset {$offset}"); |
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} |
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$this->data[$offset] = $this->validateType($type, $value); |
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} |
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public function offsetExists($offset) |
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{ |
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return array_key_exists($offset, $this->data); |
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} |
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public function offsetUnset($offset) |
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{ |
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throw WrongType::fromMessage('Tuple values cannot be unset'); |
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} |
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public function toArray(): array |
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{ |
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return $this->data; |
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} |
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private function createIterator(array $data): Iterator |
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{ |
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return new class($this->types, $data) implements Iterator { |
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/** @var array */ |
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private $types; |
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/** @var array */ |
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private $data; |
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/** @var int */ |
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private $position; |
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public function __construct(array $types, array $data) |
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{ |
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$typeCount = count($types); |
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$dataCount = count($data); |
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if ($typeCount !== $dataCount) { |
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throw WrongType::fromMessage("Tuple count mismatch, excpected exactly {$typeCount} elements, and got {$dataCount}"); |
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} |
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$this->types = $types; |
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$this->data = $data; |
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$this->position = 0; |
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} |
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public function current(): array |
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{ |
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return ['type' => current($this->types), 'value' => current($this->data)]; |
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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->types[$this->position]) && array_key_exists($this->position, $this->data); |
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} |
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public function rewind(): void |
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{ |
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$this->position = 0; |
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} |
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}; |
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} |
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} |
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spatie /
typed
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