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<?php
namespace MediaWiki\Tests\Json;
use stdClass;
use Wikimedia\Assert\Assert;
use Wikimedia\JsonCodec\JsonCodecable;
use Wikimedia\JsonCodec\JsonCodecableTrait;
/**
* Sample container object which uses JsonCodecableTrait to directly implement
* serialization/deserialization and uses class hints.
*/
class SampleContainerObject implements JsonCodecable {
use JsonCodecableTrait;
/** @var mixed */
public $contents;
/**
* Create a new SampleContainerObject which stores $contents
* @param mixed $contents
*/
public function __construct( $contents ) {
$this->contents = $contents;
}
// Implement JsonCodecable using the JsonCodecableTrait
/** @inheritDoc */
public function toJsonArray(): array {
return [
'contents' => $this->contents,
// Note that json array keys need not correspond to property names
'test' => (object)[],
// Test "array of" hints as well as regular hints
'array' => [ $this->contents ],
];
}
/** @inheritDoc */
public static function newFromJsonArray( array $json ): SampleContainerObject {
Assert::invariant(
get_class( $json['test'] ) === stdClass::class &&
count( get_object_vars( $json['test'] ) ) === 0,
"Ensure that the 'test' key is restored correctly"
);
Assert::invariant(
is_array( $json['array'] ) && count( $json['array'] ) === 1,
"Ensure that the 'array' key is restored correctly"
);
return new SampleContainerObject( $json['contents'] );
}
/** @inheritDoc */
public static function jsonClassHintFor( string $keyName ): ?string {
if ( $keyName === 'contents' ) {
// Hint that the contained value is a SampleObject. It might be!
return SampleObject::class;
} elseif ( $keyName === 'array' ) {
// Hint that the contained value is a *array of* SampleObject.
// It might be!
return SampleObject::class . '[]';
} elseif ( $keyName === 'test' ) {
// This hint will always be correct; note that this is a key
// name not a property of SampleContainerObject
return stdClass::class;
}
return null;
}
}
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