rxjs
Version:
Reactive Extensions for modern JavaScript
50 lines • 2.07 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.mergeInternals = void 0;
var from_1 = require("../observable/from");
var OperatorSubscriber_1 = require("./OperatorSubscriber");
function mergeInternals(source, subscriber, project, concurrent, onBeforeNext, expand, innerSubScheduler, additionalTeardown) {
var buffer = [];
var active = 0;
var index = 0;
var isComplete = false;
var checkComplete = function () {
if (isComplete && !buffer.length && !active) {
subscriber.complete();
}
};
var outerNext = function (value) { return (active < concurrent ? doInnerSub(value) : buffer.push(value)); };
var doInnerSub = function (value) {
expand && subscriber.next(value);
active++;
from_1.innerFrom(project(value, index++)).subscribe(new OperatorSubscriber_1.OperatorSubscriber(subscriber, function (innerValue) {
onBeforeNext === null || onBeforeNext === void 0 ? void 0 : onBeforeNext(innerValue);
if (expand) {
outerNext(innerValue);
}
else {
subscriber.next(innerValue);
}
}, undefined, function () {
active--;
var _loop_1 = function () {
var bufferedValue = buffer.shift();
innerSubScheduler ? subscriber.add(innerSubScheduler.schedule(function () { return doInnerSub(bufferedValue); })) : doInnerSub(bufferedValue);
};
while (buffer.length && active < concurrent) {
_loop_1();
}
checkComplete();
}));
};
source.subscribe(new OperatorSubscriber_1.OperatorSubscriber(subscriber, outerNext, undefined, function () {
isComplete = true;
checkComplete();
}));
return function () {
buffer = null;
additionalTeardown === null || additionalTeardown === void 0 ? void 0 : additionalTeardown();
};
}
exports.mergeInternals = mergeInternals;
//# sourceMappingURL=mergeInternals.js.map