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/** PURE_IMPORTS_START tslib,_fromArray,_util_isArray,_Subscriber,_.._internal_symbol_iterator,_innerSubscribe PURE_IMPORTS_END */
import * as tslib_1 from "tslib";
import { fromArray } from './fromArray';
import { isArray } from '../util/isArray';
import { Subscriber } from '../Subscriber';
import { iterator as Symbol_iterator } from '../../internal/symbol/iterator';
import { SimpleOuterSubscriber, SimpleInnerSubscriber, innerSubscribe } from '../innerSubscribe';
export function zip() {
var observables = [];
for (var _i = 0; _i < arguments.length; _i++) {
observables[_i] = arguments[_i];
}
var resultSelector = observables[observables.length - 1];
if (typeof resultSelector === 'function') {
observables.pop();
}
return fromArray(observables, undefined).lift(new ZipOperator(resultSelector));
}
var ZipOperator = /*@__PURE__*/ (function () {
function ZipOperator(resultSelector) {
this.resultSelector = resultSelector;
}
ZipOperator.prototype.call = function (subscriber, source) {
return source.subscribe(new ZipSubscriber(subscriber, this.resultSelector));
};
return ZipOperator;
}());
export { ZipOperator };
var ZipSubscriber = /*@__PURE__*/ (function (_super) {
tslib_1.__extends(ZipSubscriber, _super);
function ZipSubscriber(destination, resultSelector, values) {
if (values === void 0) {
values = Object.create(null);
}
var _this = _super.call(this, destination) || this;
_this.resultSelector = resultSelector;
_this.iterators = [];
_this.active = 0;
_this.resultSelector = (typeof resultSelector === 'function') ? resultSelector : undefined;
return _this;
}
ZipSubscriber.prototype._next = function (value) {
var iterators = this.iterators;
if (isArray(value)) {
iterators.push(new StaticArrayIterator(value));
}
else if (typeof value[Symbol_iterator] === 'function') {
iterators.push(new StaticIterator(value[Symbol_iterator]()));
}
else {
iterators.push(new ZipBufferIterator(this.destination, this, value));
}
};
ZipSubscriber.prototype._complete = function () {
var iterators = this.iterators;
var len = iterators.length;
this.unsubscribe();
if (len === 0) {
this.destination.complete();
return;
}
this.active = len;
for (var i = 0; i < len; i++) {
var iterator = iterators[i];
if (iterator.stillUnsubscribed) {
var destination = this.destination;
destination.add(iterator.subscribe());
}
else {
this.active--;
}
}
};
ZipSubscriber.prototype.notifyInactive = function () {
this.active--;
if (this.active === 0) {
this.destination.complete();
}
};
ZipSubscriber.prototype.checkIterators = function () {
var iterators = this.iterators;
var len = iterators.length;
var destination = this.destination;
for (var i = 0; i < len; i++) {
var iterator = iterators[i];
if (typeof iterator.hasValue === 'function' && !iterator.hasValue()) {
return;
}
}
var shouldComplete = false;
var args = [];
for (var i = 0; i < len; i++) {
var iterator = iterators[i];
var result = iterator.next();
if (iterator.hasCompleted()) {
shouldComplete = true;
}
if (result.done) {
destination.complete();
return;
}
args.push(result.value);
}
if (this.resultSelector) {
this._tryresultSelector(args);
}
else {
destination.next(args);
}
if (shouldComplete) {
destination.complete();
}
};
ZipSubscriber.prototype._tryresultSelector = function (args) {
var result;
try {
result = this.resultSelector.apply(this, args);
}
catch (err) {
this.destination.error(err);
return;
}
this.destination.next(result);
};
return ZipSubscriber;
}(Subscriber));
export { ZipSubscriber };
var StaticIterator = /*@__PURE__*/ (function () {
function StaticIterator(iterator) {
this.iterator = iterator;
this.nextResult = iterator.next();
}
StaticIterator.prototype.hasValue = function () {
return true;
};
StaticIterator.prototype.next = function () {
var result = this.nextResult;
this.nextResult = this.iterator.next();
return result;
};
StaticIterator.prototype.hasCompleted = function () {
var nextResult = this.nextResult;
return Boolean(nextResult && nextResult.done);
};
return StaticIterator;
}());
var StaticArrayIterator = /*@__PURE__*/ (function () {
function StaticArrayIterator(array) {
this.array = array;
this.index = 0;
this.length = 0;
this.length = array.length;
}
StaticArrayIterator.prototype[Symbol_iterator] = function () {
return this;
};
StaticArrayIterator.prototype.next = function (value) {
var i = this.index++;
var array = this.array;
return i < this.length ? { value: array[i], done: false } : { value: null, done: true };
};
StaticArrayIterator.prototype.hasValue = function () {
return this.array.length > this.index;
};
StaticArrayIterator.prototype.hasCompleted = function () {
return this.array.length === this.index;
};
return StaticArrayIterator;
}());
var ZipBufferIterator = /*@__PURE__*/ (function (_super) {
tslib_1.__extends(ZipBufferIterator, _super);
function ZipBufferIterator(destination, parent, observable) {
var _this = _super.call(this, destination) || this;
_this.parent = parent;
_this.observable = observable;
_this.stillUnsubscribed = true;
_this.buffer = [];
_this.isComplete = false;
return _this;
}
ZipBufferIterator.prototype[Symbol_iterator] = function () {
return this;
};
ZipBufferIterator.prototype.next = function () {
var buffer = this.buffer;
if (buffer.length === 0 && this.isComplete) {
return { value: null, done: true };
}
else {
return { value: buffer.shift(), done: false };
}
};
ZipBufferIterator.prototype.hasValue = function () {
return this.buffer.length > 0;
};
ZipBufferIterator.prototype.hasCompleted = function () {
return this.buffer.length === 0 && this.isComplete;
};
ZipBufferIterator.prototype.notifyComplete = function () {
if (this.buffer.length > 0) {
this.isComplete = true;
this.parent.notifyInactive();
}
else {
this.destination.complete();
}
};
ZipBufferIterator.prototype.notifyNext = function (innerValue) {
this.buffer.push(innerValue);
this.parent.checkIterators();
};
ZipBufferIterator.prototype.subscribe = function () {
return innerSubscribe(this.observable, new SimpleInnerSubscriber(this));
};
return ZipBufferIterator;
}(SimpleOuterSubscriber));
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