vendor/symfony/security-acl/Permission/MaskBuilder.php

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<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Security\Acl\Permission;

/**
 * This class allows you to build cumulative permissions easily, or convert
 * masks to a human-readable format.
 *
 * <code>
 *       $builder = new MaskBuilder();
 *       $builder
 *           ->add('view')
 *           ->add('create')
 *           ->add('edit')
 *       ;
 *       var_dump($builder->get());        // int(7)
 *       var_dump($builder->getPattern()); // string(32) ".............................ECV"
 * </code>
 *
 * We have defined some commonly used base permissions which you can use:
 * - VIEW: the SID is allowed to view the domain object / field
 * - CREATE: the SID is allowed to create new instances of the domain object / fields
 * - EDIT: the SID is allowed to edit existing instances of the domain object / field
 * - DELETE: the SID is allowed to delete domain objects
 * - UNDELETE: the SID is allowed to recover domain objects from trash
 * - OPERATOR: the SID is allowed to perform any action on the domain object
 *             except for granting others permissions
 * - MASTER: the SID is allowed to perform any action on the domain object,
 *           and is allowed to grant other SIDs any permission except for
 *           MASTER and OWNER permissions
 * - OWNER: the SID is owning the domain object in question and can perform any
 *          action on the domain object as well as grant any permission
 *
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
class MaskBuilder extends AbstractMaskBuilder
{
    const MASK_VIEW = 1;           // 1 << 0
    const MASK_CREATE = 2;         // 1 << 1
    const MASK_EDIT = 4;           // 1 << 2
    const MASK_DELETE = 8;         // 1 << 3
    const MASK_UNDELETE = 16;      // 1 << 4
    const MASK_OPERATOR = 32;      // 1 << 5
    const MASK_MASTER = 64;        // 1 << 6
    const MASK_OWNER = 128;        // 1 << 7
    const MASK_IDDQD = 1073741823; // 1 << 0 | 1 << 1 | ... | 1 << 30

    const CODE_VIEW = 'V';
    const CODE_CREATE = 'C';
    const CODE_EDIT = 'E';
    const CODE_DELETE = 'D';