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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\CommunityConfiguration\Schema; |
| 4 | |
| 5 | use stdClass; |
| 6 | |
| 7 | class JsonSchemaIterator implements \Iterator { |
| 8 | |
| 9 | private JsonSchemaReader $schema; |
| 10 | private int $position = 0; |
| 11 | private array $data = []; |
| 12 | private bool $initialized = false; |
| 13 | |
| 14 | /** |
| 15 | * @param JsonSchemaReader $schema |
| 16 | */ |
| 17 | public function __construct( JsonSchemaReader $schema ) { |
| 18 | $this->schema = $schema; |
| 19 | } |
| 20 | |
| 21 | private function initialize() { |
| 22 | if ( !$this->initialized ) { |
| 23 | // Load schema as components to omit processing the top level object "properties" |
| 24 | $rootSchema = $this->schema->getReflectionSchemaSource()->loadAsSchema( true ); |
| 25 | $objectSchema = json_decode( json_encode( $rootSchema ) ); |
| 26 | $this->data = $this->buildDataFromSchema( $objectSchema ); |
| 27 | $this->initialized = true; |
| 28 | } |
| 29 | } |
| 30 | |
| 31 | #[\ReturnTypeWillChange] |
| 32 | public function current() { |
| 33 | $this->initialize(); |
| 34 | return $this->data[$this->position]; |
| 35 | } |
| 36 | |
| 37 | public function next(): void { |
| 38 | $this->initialize(); |
| 39 | $this->position++; |
| 40 | } |
| 41 | |
| 42 | public function key(): int { |
| 43 | $this->initialize(); |
| 44 | return $this->position; |
| 45 | } |
| 46 | |
| 47 | public function valid(): bool { |
| 48 | $this->initialize(); |
| 49 | return isset( $this->data[$this->position] ); |
| 50 | } |
| 51 | |
| 52 | public function rewind(): void { |
| 53 | $this->initialize(); |
| 54 | $this->position = 0; |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * Return all sub-schemas in the given schemas as an array |
| 59 | * while calculating a json pointer for each of them. |
| 60 | * |
| 61 | * @param stdClass $rootSchema A stdClass representing a full JSON schema |
| 62 | * @return array<array> An array with the relevant "objects" (represented as associative arrays in PHP) in |
| 63 | * the schema. That should be a single object per schema. |
| 64 | */ |
| 65 | private function buildDataFromSchema( stdClass $rootSchema ): array { |
| 66 | $result = []; |
| 67 | |
| 68 | $stack = new \SplStack(); |
| 69 | $stack->push( [ |
| 70 | 'parentType' => 'root', |
| 71 | 'schema' => $rootSchema, |
| 72 | 'pointer' => '#', |
| 73 | ] ); |
| 74 | |
| 75 | while ( !$stack->isEmpty() ) { |
| 76 | $schemaNode = $stack->pop(); |
| 77 | // Only inspect subschemas which inform a type |
| 78 | if ( is_object( $schemaNode['schema'] ) && isset( $schemaNode['schema']->type ) ) { |
| 79 | array_push( $result, $schemaNode ); |
| 80 | } |
| 81 | |
| 82 | foreach ( $schemaNode['schema'] as $propertyName => $propertyValue ) { |
| 83 | if ( is_object( $propertyValue ) || is_array( $propertyValue ) ) { |
| 84 | $stack->push( [ |
| 85 | 'parentType' => $schemaNode['schema']->type ?? $schemaNode['parentType'], |
| 86 | 'schema' => $propertyValue, |
| 87 | 'pointer' => $schemaNode['pointer'] . '/' . $propertyName, |
| 88 | ] ); |
| 89 | } |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | return $result; |
| 94 | } |
| 95 | } |