// retoor <retoor@molodetz.nl>

class Signal {
  static SIGHUP { 1 }
  static SIGINT { 2 }
  static SIGQUIT { 3 }
  static SIGTERM { 15 }
  static SIGUSR1 { 10 }
  static SIGUSR2 { 12 }

  foreign static trap_(signum, fiber)
  foreign static ignore_(signum)
  foreign static reset_(signum)

  static trap(signum, fn) {
    if (!(signum is Num)) Fiber.abort("Signal number must be a number.")
    var fiber = Fiber.new {
      while (true) {
        fn.call()
        Fiber.yield()
      }
    }
    trap_(signum, fiber)
  }

  static ignore(signum) {
    if (!(signum is Num)) Fiber.abort("Signal number must be a number.")
    ignore_(signum)
  }

  static reset(signum) {
    if (!(signum is Num)) Fiber.abort("Signal number must be a number.")
    reset_(signum)
  }
}