1: <?php
 2: 
 3: namespace ProgrammingAreHard\Arbiter\Model;
 4: 
 5: interface PermissionsTransformerInterface extends PermissionsFactoryInterface
 6: {
 7:     /**
 8:      * Convert permissions to a bitmask.
 9:      *
10:      * @param PermissionsInterface $permissions
11:      * @return int
12:      * @throws \InvalidArgumentException
13:      */
14:     public function permissionsToMask(PermissionsInterface $permissions);
15: 
16:     /**
17:      * Convert the permissions to an array of bitmasks.
18:      *
19:      * @param PermissionsInterface $permissions
20:      * @return int[]
21:      * @throws \InvalidArgumentException
22:      */
23:     public function permissionsToMasks(PermissionsInterface $permissions);
24: 
25:     /**
26:      * Convert the bitmask to permissions.
27:      *
28:      * @param int $mask
29:      * @return PermissionsInterface
30:      */
31:     public function maskToPermissions($mask);
32: }