<?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\Core\Role;

/**
 * RoleHierarchy defines a role hierarchy.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class RoleHierarchy implements RoleHierarchyInterface
{
    private $hierarchy;
    protected $map;

    /**
     * @param array $hierarchy An array defining the hierarchy
     */
    public function __construct(array $hierarchy)
    {
        $this->hierarchy = $hierarchy;

        $this->buildRoleMap();
    }

    /**
     * {@inheritdoc}
     */
    public function getReachableRoles(array $roles)
    {
        $reachableRoles = $roles;
        foreach ($roles as $role) {
            if (!isset($this->map[$role->getRole()])) {
                continue;
            }

            foreach ($this->map[$role->getRole()] as $r) {
                $reachableRoles[] = new Role($r);
            }
        }

        return $reachableRoles;
    }

    protected function buildRoleMap()
    {
        $this->map = array();
        foreach ($this->hierarchy as $main => $roles) {
            $this->map[$main] = $roles;
            $visited = array();
            $additionalRoles = $roles;
            while ($role = array_shift($additionalRoles)) {
                if (!isset($this->hierarchy[$role])) {
                    continue;
                }

                $visited[] = $role;

                foreach ($this->hierarchy[$role] as $roleToAdd) {
                    $this->map[$main][] = $roleToAdd;
                }

                foreach (array_diff($this->hierarchy[$role], $visited) as $additionalRole) {
                    $additionalRoles[] = $additionalRole;
                }
            }

            $this->map[$main] = array_unique($this->map[$main]);
        }
    }
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NDg5MzU5NzM5NzI4MjU3MyA0MjU4NTUwMTQxMDE5NTI3IDU0MzM3MDEwNzA4NjE2MzE=