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<?php |
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declare(strict_types=1); |
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namespace Stratadox\Json; |
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use function array_pop; |
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/** |
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* Immutable Json Representation. |
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* |
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* @author Stratadox |
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*/ |
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final class ImmutableJson implements Json |
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{ |
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use JsonEncoding, JsonDecoding, PathValidation; |
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/** @var mixed The raw Json data */ |
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private $data; |
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/** @var string The encoded Json string */ |
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private $encoded; |
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/** @throws InvalidJson */ |
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private function __construct($decodedJsonData) |
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{ |
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$this->data = $decodedJsonData; |
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$this->encoded = $this->encode($decodedJsonData); |
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} |
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/** |
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* Produces a Json object from a valid json-encoded string. |
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* |
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* @param string $jsonInput The json-encoded string input. |
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* @return Json The Json resulting from the input string. |
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* @throws InvalidJson When the input string is not correctly encoded |
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* in json format. |
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*/ |
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public static function fromString(string $jsonInput): Json |
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{ |
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return new ImmutableJson(self::decode($jsonInput)); |
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} |
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/** |
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* Produces a Json object from raw input data. |
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* |
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* @param mixed $input The "raw" input data. Any input that can be encoded |
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* as json is accepted. |
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* @return Json The Json resulting from the input data. |
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* @throws InvalidJson When the input data cannot be encoded in json |
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* format. |
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*/ |
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public static function fromData($input): Json |
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{ |
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return new ImmutableJson($input); |
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} |
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/** @inheritdoc */ |
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public function has(string ...$path): bool |
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{ |
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$context = $this->data; |
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foreach ($path as $offset) { |
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if (!$this->isValid($context, $offset)) { |
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return false; |
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} |
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$context = $context[$offset]; |
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} |
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return true; |
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} |
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/** @inheritdoc */ |
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public function retrieve(string ...$path) |
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{ |
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$context = $this->data; |
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foreach ($path as $offset) { |
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$this->mustBeValid($context, $offset, ...$path); |
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$context = $context[$offset]; |
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} |
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return $context; |
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} |
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/** @inheritdoc */ |
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public function write($value, string ...$path): Json |
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{ |
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if (empty($path)) { |
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return new ImmutableJson($value); |
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} |
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$copy = $this->data; |
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$write = &$copy; |
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$end = array_pop($path); |
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foreach ($path as $offset) { |
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$write = &$write[$offset]; |
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} |
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$write[$end] = $value; |
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return new ImmutableJson($copy); |
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} |
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/** @inheritdoc */ |
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public function data() |
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{ |
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return $this->data; |
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} |
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/** @inheritdoc */ |
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public function __toString(): string |
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{ |
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return $this->encoded; |
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} |
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} |
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Stratadox /
Json
