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/** PURE_IMPORTS_START tslib,_OuterSubscriber,_InnerSubscriber,_util_subscribeToResult,_map,_observable_from PURE_IMPORTS_END */
import * as tslib_1 from "tslib";
import { OuterSubscriber } from '../OuterSubscriber';
import { InnerSubscriber } from '../InnerSubscriber';
import { subscribeToResult } from '../util/subscribeToResult';
import { map } from './map';
import { from } from '../observable/from';
export function exhaustMap(project, resultSelector) {
if (resultSelector) {
return function (source) { return source.pipe(exhaustMap(function (a, i) { return from(project(a, i)).pipe(map(function (b, ii) { return resultSelector(a, b, i, ii); })); })); };
}
return function (source) {
return source.lift(new ExhauseMapOperator(project));
};
}
var ExhauseMapOperator = /*@__PURE__*/ (function () {
function ExhauseMapOperator(project) {
this.project = project;
}
ExhauseMapOperator.prototype.call = function (subscriber, source) {
return source.subscribe(new ExhaustMapSubscriber(subscriber, this.project));
};
return ExhauseMapOperator;
}());
var ExhaustMapSubscriber = /*@__PURE__*/ (function (_super) {
tslib_1.__extends(ExhaustMapSubscriber, _super);
function ExhaustMapSubscriber(destination, project) {
var _this = _super.call(this, destination) || this;
_this.project = project;
_this.hasSubscription = false;
_this.hasCompleted = false;
_this.index = 0;
return _this;
}
ExhaustMapSubscriber.prototype._next = function (value) {
if (!this.hasSubscription) {
this.tryNext(value);
}
};
ExhaustMapSubscriber.prototype.tryNext = function (value) {
var result;
var index = this.index++;
try {
result = this.project(value, index);
}
catch (err) {
this.destination.error(err);
return;
}
this.hasSubscription = true;
this._innerSub(result, value, index);
};
ExhaustMapSubscriber.prototype._innerSub = function (result, value, index) {
var innerSubscriber = new InnerSubscriber(this, undefined, undefined);
var destination = this.destination;
destination.add(innerSubscriber);
subscribeToResult(this, result, value, index, innerSubscriber);
};
ExhaustMapSubscriber.prototype._complete = function () {
this.hasCompleted = true;
if (!this.hasSubscription) {
this.destination.complete();
}
this.unsubscribe();
};
ExhaustMapSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
this.destination.next(innerValue);
};
ExhaustMapSubscriber.prototype.notifyError = function (err) {
this.destination.error(err);
};
ExhaustMapSubscriber.prototype.notifyComplete = function (innerSub) {
var destination = this.destination;
destination.remove(innerSub);
this.hasSubscription = false;
if (this.hasCompleted) {
this.destination.complete();
}
};
return ExhaustMapSubscriber;
}(OuterSubscriber));
//# sourceMappingURL=exhaustMap.js.map
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