28 #if !defined(RXCPP_OPERATORS_RX_WINDOW_TOGGLE_HPP) 29 #define RXCPP_OPERATORS_RX_WINDOW_TOGGLE_HPP 31 #include "../rx-includes.hpp" 40 struct window_toggle_invalid_arguments {};
43 struct window_toggle_invalid :
public rxo::operator_base<window_toggle_invalid_arguments<AN...>> {
44 using type = observable<window_toggle_invalid_arguments<
AN...>, window_toggle_invalid<
AN...>>;
47 using window_toggle_invalid_t =
typename window_toggle_invalid<
AN...>::type;
49 template<
class T,
class Openings,
class ClosingSelector,
class Coordination>
52 typedef window_toggle<T, Openings, ClosingSelector, Coordination> this_type;
54 using source_value_type = rxu::decay_t<T>;
55 using coordination_type = rxu::decay_t<Coordination>;
56 using coordinator_type =
typename coordination_type::coordinator_type;
57 using openings_type = rxu::decay_t<Openings>;
58 using openings_value_type =
typename openings_type::value_type;
59 using closing_selector_type = rxu::decay_t<ClosingSelector>;
60 using closings_type =
rxu::result_of_t<closing_selector_type(openings_value_type)>;
61 using closings_value_type =
typename closings_type::value_type;
63 struct window_toggle_values
65 window_toggle_values(openings_type opens, closing_selector_type closes, coordination_type c)
67 , closingSelector(closes)
71 openings_type openings;
72 mutable closing_selector_type closingSelector;
73 coordination_type coordination;
75 window_toggle_values initial;
77 window_toggle(openings_type opens, closing_selector_type closes, coordination_type coordination)
78 : initial(opens, closes, coordination)
82 template<
class Subscriber>
83 struct window_toggle_observer
85 typedef window_toggle_observer<Subscriber> this_type;
86 typedef rxu::decay_t<T> value_type;
87 typedef rxu::decay_t<Subscriber> dest_type;
88 typedef observer<T, this_type> observer_type;
90 struct window_toggle_subscriber_values :
public window_toggle_values
92 window_toggle_subscriber_values(composite_subscription cs, dest_type d, window_toggle_values v, coordinator_type c)
93 : window_toggle_values(v)
96 , coordinator(std::move(c))
97 , worker(coordinator.get_worker())
100 composite_subscription cs;
102 coordinator_type coordinator;
104 mutable std::list<rxcpp::subjects::subject<T>> subj;
106 std::shared_ptr<window_toggle_subscriber_values> state;
108 window_toggle_observer(composite_subscription cs, dest_type d, window_toggle_values v, coordinator_type c)
109 : state(std::make_shared<window_toggle_subscriber_values>(window_toggle_subscriber_values(std::move(cs), std::move(d), v, std::move(c))))
111 auto localState = state;
113 composite_subscription innercs;
117 auto innerscope = localState->dest.add(innercs);
120 localState->dest.remove(innerscope);
124 [&](){
return localState->coordinator.in(localState->openings);},
126 if (source.empty()) {
133 auto sink = make_subscriber<openings_value_type>(
137 [localState](
const openings_value_type& ov) {
138 auto closer = localState->closingSelector(ov);
140 auto it = localState->subj.insert(localState->subj.end(), rxcpp::subjects::subject<T>());
141 localState->dest.on_next(it->get_observable().as_dynamic());
143 composite_subscription innercs;
147 auto innerscope = localState->dest.add(innercs);
150 localState->dest.remove(innerscope);
153 auto source = localState->coordinator.in(closer);
155 auto sit = std::make_shared<decltype(it)>(it);
156 auto close = [localState, sit]() {
158 *sit = localState->subj.end();
159 if (it != localState->subj.end()) {
160 it->get_subscriber().on_completed();
161 localState->subj.erase(it);
168 auto sink = make_subscriber<closings_value_type>(
172 [close, innercs](closings_value_type) {
174 innercs.unsubscribe();
177 [localState](std::exception_ptr e) {
178 localState->dest.on_error(e);
183 auto selectedSink = localState->coordinator.out(sink);
184 source.subscribe(std::move(selectedSink));
187 [localState](std::exception_ptr e) {
188 localState->dest.on_error(e);
195 [&](){
return localState->coordinator.out(sink);},
197 if (selectedSink.empty()) {
200 source->subscribe(std::move(selectedSink.get()));
203 void on_next(T v)
const {
204 auto localState = state;
205 auto work = [v, localState](
const rxsc::schedulable&){
206 for (
auto s : localState->subj) {
207 s.get_subscriber().on_next(v);
211 [&](){
return localState->coordinator.act(work);},
213 if (selectedWork.empty()) {
216 localState->worker.schedule(selectedWork.get());
219 void on_error(std::exception_ptr e)
const {
220 auto localState = state;
221 auto work = [e, localState](
const rxsc::schedulable&){
222 for (
auto s : localState->subj) {
223 s.get_subscriber().on_error(e);
225 localState->dest.on_error(e);
228 [&](){
return localState->coordinator.act(work);},
230 if (selectedWork.empty()) {
233 localState->worker.schedule(selectedWork.get());
236 void on_completed()
const {
237 auto localState = state;
238 auto work = [localState](
const rxsc::schedulable&){
239 for (
auto s : localState->subj) {
240 s.get_subscriber().on_completed();
242 localState->dest.on_completed();
245 [&](){
return localState->coordinator.act(work);},
247 if (selectedWork.empty()) {
250 localState->worker.schedule(selectedWork.get());
253 static subscriber<T, observer_type> make(dest_type d, window_toggle_values v) {
254 auto cs = composite_subscription();
255 auto coordinator = v.coordination.create_coordinator();
257 return make_subscriber<T>(cs, observer_type(this_type(cs, std::move(d), std::move(v), std::move(coordinator))));
261 template<
class Subscriber>
262 auto operator()(Subscriber dest)
const 263 -> decltype(window_toggle_observer<Subscriber>::make(std::move(dest), initial)) {
264 return window_toggle_observer<Subscriber>::make(std::move(dest), initial);
272 template<
class...
AN>
283 template<
class Observable,
class Openings,
class ClosingSelector,
286 class OpeningsValueType =
typename OpeningsType::value_type,
292 static auto member(Observable&& o, Openings&& openings, ClosingSelector&& closingSelector)
293 -> decltype(o.template lift<Value>(WindowToggle(std::forward<Openings>(openings), std::forward<ClosingSelector>(closingSelector),
identity_immediate()))) {
294 return o.template lift<Value>(WindowToggle(std::forward<Openings>(openings), std::forward<ClosingSelector>(closingSelector),
identity_immediate()));
297 template<
class Observable,
class Openings,
class ClosingSelector,
class Coordination,
300 class OpeningsValueType =
typename OpeningsType::value_type,
307 static auto member(Observable&& o, Openings&& openings, ClosingSelector&& closingSelector, Coordination&& cn)
308 -> decltype(o.template lift<Value>(WindowToggle(std::forward<Openings>(openings), std::forward<ClosingSelector>(closingSelector), std::forward<Coordination>(cn)))) {
309 return o.template lift<Value>(WindowToggle(std::forward<Openings>(openings), std::forward<ClosingSelector>(closingSelector), std::forward<Coordination>(cn)));
312 template<
class...
AN>
313 static operators::detail::window_toggle_invalid_t<
AN...>
member(
AN...) {
316 static_assert(
sizeof...(
AN) == 10000,
"window_toggle takes (Openings, ClosingSelector, optional Coordination)");
Definition: rx-util.hpp:90
Definition: rx-all.hpp:26
typename std::decay< T >::type::value_type value_type_t
Definition: rx-util.hpp:35
Definition: rx-operators.hpp:69
auto AN
Definition: rx-finally.hpp:105
typename std::decay< T >::type decay_t
Definition: rx-util.hpp:36
Definition: rx-operators.hpp:47
static auto member(Observable &&o, Openings &&openings, ClosingSelector &&closingSelector) -> decltype(o.template lift< Value >(WindowToggle(std::forward< Openings >(openings), std::forward< ClosingSelector >(closingSelector), identity_immediate())))
Definition: rx-window_toggle.hpp:292
typename std::enable_if< all_true_type< BN... >::value >::type enable_if_all_true_type_t
Definition: rx-util.hpp:104
a source of values. subscribe or use one of the operator methods that return a new observable,...
Definition: rx-observable.hpp:510
identity_one_worker identity_immediate()
Definition: rx-coordination.hpp:170
static auto member(Observable &&o, Openings &&openings, ClosingSelector &&closingSelector, Coordination &&cn) -> decltype(o.template lift< Value >(WindowToggle(std::forward< Openings >(openings), std::forward< ClosingSelector >(closingSelector), std::forward< Coordination >(cn))))
Definition: rx-window_toggle.hpp:307
auto on_exception(const F &f, const OnError &c) -> typename std::enable_if< detail::is_on_error< OnError >::value, typename detail::maybe_from_result< F >::type >::type
Definition: rx-observer.hpp:639
Definition: rx-operators.hpp:494
Definition: rx-coordination.hpp:114
auto window_toggle(AN &&... an) -> operator_factory< window_toggle_tag, AN... >
Return an observable that emits observables every period time interval and collects items from this o...
Definition: rx-window_toggle.hpp:273
typename std::result_of< TN... >::type result_of_t
Definition: rx-util.hpp:37
static operators::detail::window_toggle_invalid_t< AN... > member(AN...)
Definition: rx-window_toggle.hpp:313
Definition: rx-coordination.hpp:37