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<?php |
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declare(strict_types=1); |
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namespace Koriym\AppStateDiagram; |
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use Koriym\AppStateDiagram\Exception\DescriptorIsNotArrayException; |
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use Koriym\AppStateDiagram\Exception\InvalidDescriptorException; |
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use Koriym\AppStateDiagram\Exception\InvalidTypeException; |
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use stdClass; |
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use function assert; |
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use function in_array; |
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use function is_array; |
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use function is_string; |
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use function json_encode; |
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use function ksort; |
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use function property_exists; |
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final class CreateDescriptor |
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{ |
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private const VALID_TYPES = ['semantic', 'safe', 'unsafe', 'idempotent']; |
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/** |
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* @param array<string, stdClass> $descriptorsArray |
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* |
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* @return array<string, AbstractDescriptor> |
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*/ |
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public function __invoke(array $descriptorsArray, ?stdClass $parentDescriptor = null): array |
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{ |
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$descriptors = []; |
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foreach ($descriptorsArray as $descriptor) { |
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/** @var array<string, AbstractDescriptor> $descriptors */ |
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$descriptors = $this->scan($descriptor, $descriptors, $parentDescriptor); |
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} |
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ksort($descriptors); |
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return $descriptors; |
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} |
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/** |
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* @param array<string, AbstractDescriptor> $descriptors |
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* |
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* @return array<AbstractDescriptor> |
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*/ |
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private function scan(stdClass $descriptor, array $descriptors, ?stdClass $parentDescriptor): array |
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{ |
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$this->defaultSemantic($descriptor); |
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$this->validateDescriptor($descriptor); |
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if (isset($descriptor->id) && is_string($descriptor->id) && $descriptor->type === 'semantic') { |
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$descriptors[$descriptor->id] = new SemanticDescriptor($descriptor, $parentDescriptor); |
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} |
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$isTransDescriptor = isset($descriptor->type) && in_array($descriptor->type, ['safe', 'unsafe', 'idempotent'], true); |
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if ($isTransDescriptor) { |
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$parent = $parentDescriptor ?? new NullDescriptor(); |
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assert(is_string($descriptor->id)); |
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$descriptors[$descriptor->id] = new TransDescriptor($descriptor, new SemanticDescriptor($parent)); |
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} |
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if (property_exists($descriptor, 'descriptor')) { |
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$descriptors = $this->scanInlineDescriptor($descriptor, $descriptors); |
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} |
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return $descriptors; |
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} |
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private function defaultSemantic(stdClass $descriptor): void |
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{ |
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if (isset($descriptor->id) && ! isset($descriptor->type)) { |
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$descriptor->type = 'semantic'; |
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} |
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} |
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/** |
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* @param array<AbstractDescriptor> $descriptors |
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* |
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* @return array<array-key, AbstractDescriptor> |
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*/ |
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private function scanInlineDescriptor(stdClass $descriptor, array $descriptors): array |
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{ |
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if (! is_array($descriptor->descriptor)) { |
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$msg = is_string($descriptor->descriptor) ? $descriptor->descriptor : json_encode($descriptor); |
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throw new DescriptorIsNotArrayException((string) $msg); |
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} |
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/** @psalm-suppress MixedArgumentTypeCoercion */ |
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$inLineSemantics = ($this)($descriptor->descriptor, $descriptor); |
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/** @psalm-suppress MixedArgumentTypeCoercion */ |
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if ($inLineSemantics !== []) { |
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$descriptors = $this->addInlineSemantics($descriptors, $inLineSemantics); |
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} |
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return $descriptors; |
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} |
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/** |
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* @param array<string, AbstractDescriptor> $descriptors |
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* @param array<string, AbstractDescriptor> $inLineSemantics |
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* |
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* @return array<string, AbstractDescriptor> |
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*/ |
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private function addInlineSemantics(array $descriptors, array $inLineSemantics): array |
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{ |
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foreach ($inLineSemantics as $inLineSemantic) { |
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if ($inLineSemantic instanceof SemanticDescriptor) { |
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$descriptors[$inLineSemantic->id] = $inLineSemantic; |
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} |
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} |
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return $descriptors; |
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} |
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private function validateDescriptor(stdClass $descriptor): void |
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{ |
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$hasNoId = ! isset($descriptor->href) && ! isset($descriptor->id); |
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if ($hasNoId) { |
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throw new InvalidDescriptorException((string) json_encode($descriptor)); |
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} |
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if (isset($descriptor->type) && ! in_array($descriptor->type, self::VALID_TYPES)) { |
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throw new InvalidTypeException((string) $descriptor->type); |
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} |
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} |
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} |
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alps-asd /
app-state-diagram
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