/******************************************************************************
 *                       ____    _    _____                                   *
 *                      / ___|  / \  |  ___|    C++                           *
 *                     | |     / _ \ | |_       Actor                         *
 *                     | |___ / ___ \|  _|      Framework                     *
 *                      \____/_/   \_|_|                                      *
 *                                                                            *
 * Copyright 2011-2018 Dominik Charousset                                     *
 *                                                                            *
 * Distributed under the terms and conditions of the BSD 3-Clause License or  *
 * (at your option) under the terms and conditions of the Boost Software      *
 * License 1.0. See accompanying files LICENSE and LICENSE_ALTERNATIVE.       *
 *                                                                            *
 * If you did not receive a copy of the license files, see                    *
 * http://opensource.org/licenses/BSD-3-Clause and                            *
 * http://www.boost.org/LICENSE_1_0.txt.                                      *
 ******************************************************************************/

#pragma once

#include <string>

#include "caf/error.hpp"

namespace caf {

// --(rst-exit-reason-begin)--
/// This error category represents fail conditions for actors.
enum class exit_reason : uint8_t {
  /// Indicates that an actor finished execution without error.
  normal = 0,
  /// Indicates that an actor died because of an unhandled exception.
  unhandled_exception,
  /// Indicates that the exit reason for this actor is unknown, i.e.,
  /// the actor has been terminated and no longer exists.
  unknown,
  /// Indicates that an actor pool unexpectedly ran out of workers.
  out_of_workers,
  /// Indicates that an actor was forced to shutdown by a user-generated event.
  user_shutdown,
  /// Indicates that an actor was killed unconditionally.
  kill,
  /// Indicates that an actor finishied execution because a connection
  /// to a remote link was closed unexpectedly.
  remote_link_unreachable,
  /// Indicates that an actor was killed because it became unreachable.
  unreachable
};
// --(rst-exit-reason-end)--

/// Returns a string representation of given exit reason.
std::string to_string(exit_reason);

/// @relates exit_reason
error make_error(exit_reason);

} // namespace caf
