89 lines
3.5 KiB
JavaScript
89 lines
3.5 KiB
JavaScript
|
"use strict";
|
||
|
|
var __extends = (this && this.__extends) || (function () {
|
||
|
|
var extendStatics = function (d, b) {
|
||
|
|
extendStatics = Object.setPrototypeOf ||
|
||
|
|
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
|
||
|
|
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
|
||
|
|
return extendStatics(d, b);
|
||
|
|
}
|
||
|
|
return function (d, b) {
|
||
|
|
extendStatics(d, b);
|
||
|
|
function __() { this.constructor = d; }
|
||
|
|
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
|
||
|
|
};
|
||
|
|
})();
|
||
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
||
|
|
var map_1 = require("./map");
|
||
|
|
var from_1 = require("../observable/from");
|
||
|
|
var innerSubscribe_1 = require("../innerSubscribe");
|
||
|
|
function switchMap(project, resultSelector) {
|
||
|
|
if (typeof resultSelector === 'function') {
|
||
|
|
return function (source) { return source.pipe(switchMap(function (a, i) { return from_1.from(project(a, i)).pipe(map_1.map(function (b, ii) { return resultSelector(a, b, i, ii); })); })); };
|
||
|
|
}
|
||
|
|
return function (source) { return source.lift(new SwitchMapOperator(project)); };
|
||
|
|
}
|
||
|
|
exports.switchMap = switchMap;
|
||
|
|
var SwitchMapOperator = (function () {
|
||
|
|
function SwitchMapOperator(project) {
|
||
|
|
this.project = project;
|
||
|
|
}
|
||
|
|
SwitchMapOperator.prototype.call = function (subscriber, source) {
|
||
|
|
return source.subscribe(new SwitchMapSubscriber(subscriber, this.project));
|
||
|
|
};
|
||
|
|
return SwitchMapOperator;
|
||
|
|
}());
|
||
|
|
var SwitchMapSubscriber = (function (_super) {
|
||
|
|
__extends(SwitchMapSubscriber, _super);
|
||
|
|
function SwitchMapSubscriber(destination, project) {
|
||
|
|
var _this = _super.call(this, destination) || this;
|
||
|
|
_this.project = project;
|
||
|
|
_this.index = 0;
|
||
|
|
return _this;
|
||
|
|
}
|
||
|
|
SwitchMapSubscriber.prototype._next = function (value) {
|
||
|
|
var result;
|
||
|
|
var index = this.index++;
|
||
|
|
try {
|
||
|
|
result = this.project(value, index);
|
||
|
|
}
|
||
|
|
catch (error) {
|
||
|
|
this.destination.error(error);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
this._innerSub(result);
|
||
|
|
};
|
||
|
|
SwitchMapSubscriber.prototype._innerSub = function (result) {
|
||
|
|
var innerSubscription = this.innerSubscription;
|
||
|
|
if (innerSubscription) {
|
||
|
|
innerSubscription.unsubscribe();
|
||
|
|
}
|
||
|
|
var innerSubscriber = new innerSubscribe_1.SimpleInnerSubscriber(this);
|
||
|
|
var destination = this.destination;
|
||
|
|
destination.add(innerSubscriber);
|
||
|
|
this.innerSubscription = innerSubscribe_1.innerSubscribe(result, innerSubscriber);
|
||
|
|
if (this.innerSubscription !== innerSubscriber) {
|
||
|
|
destination.add(this.innerSubscription);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
SwitchMapSubscriber.prototype._complete = function () {
|
||
|
|
var innerSubscription = this.innerSubscription;
|
||
|
|
if (!innerSubscription || innerSubscription.closed) {
|
||
|
|
_super.prototype._complete.call(this);
|
||
|
|
}
|
||
|
|
this.unsubscribe();
|
||
|
|
};
|
||
|
|
SwitchMapSubscriber.prototype._unsubscribe = function () {
|
||
|
|
this.innerSubscription = undefined;
|
||
|
|
};
|
||
|
|
SwitchMapSubscriber.prototype.notifyComplete = function () {
|
||
|
|
this.innerSubscription = undefined;
|
||
|
|
if (this.isStopped) {
|
||
|
|
_super.prototype._complete.call(this);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
SwitchMapSubscriber.prototype.notifyNext = function (innerValue) {
|
||
|
|
this.destination.next(innerValue);
|
||
|
|
};
|
||
|
|
return SwitchMapSubscriber;
|
||
|
|
}(innerSubscribe_1.SimpleOuterSubscriber));
|
||
|
|
//# sourceMappingURL=switchMap.js.map
|