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// This file is part of CAF, the C++ Actor Framework. See the file LICENSE in
// the main distribution directory for license terms and copyright or visit
// https://github.com/actor-framework/actor-framework/blob/master/LICENSE.
#pragma once
#include <tuple>
#include "caf/delegated.hpp"
#include "caf/detail/implicit_conversions.hpp"
#include "caf/fwd.hpp"
#include "caf/stream.hpp"
#include "caf/stream_slot.hpp"
#include "caf/stream_source.hpp"
namespace caf {
/// Returns a stream source with the slot ID of its first outbound path.
template <class DownstreamManager, class... Ts>
class make_source_result
: public delegated<stream<typename DownstreamManager::output_type>, Ts...> {
public:
// -- member types -----------------------------------------------------------
/// Type of a single element.
using output_type = typename DownstreamManager::output_type;
/// Fully typed stream manager as returned by `make_source`.
using source_type = stream_source<DownstreamManager>;
/// Pointer to a fully typed stream manager.
using source_ptr_type = intrusive_ptr<source_type>;
/// The return type for `scheduled_actor::make_stage`.
using stream_type = stream<output_type>;
/// Type of user-defined handshake arguments.
using handshake_arguments = std::tuple<Ts...>;
// -- constructors, destructors, and assignment operators --------------------
make_source_result() noexcept : slot_(0) {
// nop
}
make_source_result(stream_slot slot, source_ptr_type ptr) noexcept
: slot_(slot), ptr_(std::move(ptr)) {
// nop
}
make_source_result(make_source_result&&) = default;
make_source_result(const make_source_result&) = default;
make_source_result& operator=(make_source_result&&) = default;
make_source_result& operator=(const make_source_result&) = default;
// -- properties -------------------------------------------------------------
stream_slot outbound_slot() const noexcept {
return slot_;
}
source_ptr_type& ptr() noexcept {
return ptr_;
}
const source_ptr_type& ptr() const noexcept {
return ptr_;
}
private:
stream_slot slot_;
source_ptr_type ptr_;
};
/// @relates make_source_result
template <class DownstreamManager, class... Ts>
using make_source_result_t
= make_source_result<DownstreamManager, detail::strip_and_convert_t<Ts>...>;
} // namespace caf
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