Simple Role-based Access Control library
import rbac
type
Role = enum
Guest, User, Author, Editor, Administrator
Subject = enum
Posts, Users, Settings
Permission = enum
Read, Create, Edit, Delete, EditOthers, DeleteOthers, Manage
var acl = newAcl[Role, Subject, Permission]()
acl.addRoles(User, Guest)
acl.addRole(Author, @[User])
acl.addRole(Editor, @[Author])
acl.addRole(Administrator, @[Editor])
acl.addSubjects(Posts, Users, Settings)
acl.allow(User, Read, Posts)
acl.allow(Author, Create, Posts)
acl.allow(Author, Edit, Posts)
acl.allow(Author, Delete, Posts)
acl.allow(Editor, EditOthers, Posts)
acl.allow(Editor, DeleteOthers, Posts)
acl.allow(Administrator, Create, Users)
acl.allow(Administrator, Edit, Users)
acl.allow(Administrator, Delete, Users)
acl.allow(Administrator, Manage, Settings)
acl.deny(Guest, Read, Posts)
assert acl.isDenied(Guest, Read, Posts)
Please find in tests folder for more examples