om/node_modules/rxjs/_esm5/internal/operators/bufferToggle.js

/** PURE_IMPORTS_START tslib,_Subscription,_util_subscribeToResult,_OuterSubscriber PURE_IMPORTS_END */
import * as tslib_1 from "tslib";
import { Subscription } from '../Subscription';
import { subscribeToResult } from '../util/subscribeToResult';
import { OuterSubscriber } from '../OuterSubscriber';
export function bufferToggle(openings, closingSelector) {
    return function bufferToggleOperatorFunction(source) {
        return source.lift(new BufferToggleOperator(openings, closingSelector));
    };
}
var BufferToggleOperator = /*@__PURE__*/ (function () {
    function BufferToggleOperator(openings, closingSelector) {
        this.openings = openings;
        this.closingSelector = closingSelector;
    }
    BufferToggleOperator.prototype.call = function (subscriber, source) {
        return source.subscribe(new BufferToggleSubscriber(subscriber, this.openings, this.closingSelector));
    };
    return BufferToggleOperator;
}());
var BufferToggleSubscriber = /*@__PURE__*/ (function (_super) {
    tslib_1.__extends(BufferToggleSubscriber, _super);
    function BufferToggleSubscriber(destination, openings, closingSelector) {
        var _this = _super.call(this, destination) || this;
        _this.openings = openings;
        _this.closingSelector = closingSelector;
        _this.contexts = [];
        _this.add(subscribeToResult(_this, openings));
        return _this;
    }
    BufferToggleSubscriber.prototype._next = function (value) {
        var contexts = this.contexts;
        var len = contexts.length;
        for (var i = 0; i < len; i++) {
            contexts[i].buffer.push(value);
        }
    };
    BufferToggleSubscriber.prototype._error = function (err) {
        var contexts = this.contexts;
        while (contexts.length > 0) {
            var context_1 = contexts.shift();
            context_1.subscription.unsubscribe();
            context_1.buffer = null;
            context_1.subscription = null;
        }
        this.contexts = null;
        _super.prototype._error.call(this, err);
    };
    BufferToggleSubscriber.prototype._complete = function () {
        var contexts = this.contexts;
        while (contexts.length > 0) {
            var context_2 = contexts.shift();
            this.destination.next(context_2.buffer);
            context_2.subscription.unsubscribe();
            context_2.buffer = null;
            context_2.subscription = null;
        }
        this.contexts = null;
        _super.prototype._complete.call(this);
    };
    BufferToggleSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
        outerValue ? this.closeBuffer(outerValue) : this.openBuffer(innerValue);
    };
    BufferToggleSubscriber.prototype.notifyComplete = function (innerSub) {
        this.closeBuffer(innerSub.context);
    };
    BufferToggleSubscriber.prototype.openBuffer = function (value) {
        try {
            var closingSelector = this.closingSelector;
            var closingNotifier = closingSelector.call(this, value);
            if (closingNotifier) {
                this.trySubscribe(closingNotifier);
            }
        }
        catch (err) {
            this._error(err);
        }
    };
    BufferToggleSubscriber.prototype.closeBuffer = function (context) {
        var contexts = this.contexts;
        if (contexts && context) {
            var buffer = context.buffer, subscription = context.subscription;
            this.destination.next(buffer);
            contexts.splice(contexts.indexOf(context), 1);
            this.remove(subscription);
            subscription.unsubscribe();
        }
    };
    BufferToggleSubscriber.prototype.trySubscribe = function (closingNotifier) {
        var contexts = this.contexts;
        var buffer = [];
        var subscription = new Subscription();
        var context = { buffer: buffer, subscription: subscription };
        contexts.push(context);
        var innerSubscription = subscribeToResult(this, closingNotifier, context);
        if (!innerSubscription || innerSubscription.closed) {
            this.closeBuffer(context);
        }
        else {
            innerSubscription.context = context;
            this.add(innerSubscription);
            subscription.add(innerSubscription);
        }
    };
    return BufferToggleSubscriber;
}(OuterSubscriber));
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