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<?php |
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declare(strict_types=1); |
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namespace Location\CardinalDirection; |
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use Location\Exception\InvalidDistanceException; |
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/** @psalm-immutable */ |
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class CardinalDirectionDistances |
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{ |
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/** @var float */ |
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private $north; |
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/** @var float */ |
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private $east; |
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/** @var float */ |
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private $south; |
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/** @var float */ |
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private $west; |
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private function __construct(float $north, float $east, float $south, float $west) |
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{ |
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$this->north = $north; |
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$this->east = $east; |
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$this->south = $south; |
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$this->west = $west; |
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} |
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/** |
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* @psalm-pure |
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* @psalm-mutation-free |
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*/ |
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public static function create(): self |
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{ |
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return new self(0, 0, 0, 0); |
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} |
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/** @psalm-mutation-free */ |
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public function setNorth(float $north): self |
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{ |
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$this->validatePositive($north); |
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return new self($north, $this->east, $this->south, $this->west); |
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} |
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/** @psalm-mutation-free */ |
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public function setEast(float $east): self |
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{ |
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$this->validatePositive($east); |
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return new self($this->north, $east, $this->south, $this->west); |
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} |
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/** @psalm-mutation-free */ |
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public function setSouth(float $south): self |
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{ |
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$this->validatePositive($south); |
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return new self($this->north, $this->east, $south, $this->west); |
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} |
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/** @psalm-mutation-free */ |
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public function setWest(float $west): self |
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{ |
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$this->validatePositive($west); |
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return new self($this->north, $this->east, $this->south, $west); |
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} |
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/** @psalm-mutation-free */ |
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public function getNorth(): float |
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{ |
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return $this->north; |
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} |
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/** @psalm-mutation-free */ |
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public function getEast(): float |
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{ |
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return $this->east; |
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} |
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/** @psalm-mutation-free */ |
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public function getSouth(): float |
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{ |
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return $this->south; |
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} |
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/** @psalm-mutation-free */ |
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public function getWest(): float |
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{ |
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return $this->west; |
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} |
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/** |
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* @psalm-pure |
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* @psalm-mutation-free |
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* |
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* @throws InvalidDistanceException |
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*/ |
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private function validatePositive(float $value): void |
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{ |
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if ($value < 0) { |
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throw new InvalidDistanceException('Negative distance is invalid.'); |
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} |
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} |
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} |
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mjaschen /
phpgeo
