Subject.js
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import { __extends, __values } from "tslib";
import { Observable } from './Observable';
import { Subscription, EMPTY_SUBSCRIPTION } from './Subscription';
import { ObjectUnsubscribedError } from './util/ObjectUnsubscribedError';
import { arrRemove } from './util/arrRemove';
import { errorContext } from './util/errorContext';
var Subject = (function (_super) {
__extends(Subject, _super);
function Subject() {
var _this = _super.call(this) || this;
_this.closed = false;
_this.currentObservers = null;
_this.observers = [];
_this.isStopped = false;
_this.hasError = false;
_this.thrownError = null;
return _this;
}
Subject.prototype.lift = function (operator) {
var subject = new AnonymousSubject(this, this);
subject.operator = operator;
return subject;
};
Subject.prototype._throwIfClosed = function () {
if (this.closed) {
throw new ObjectUnsubscribedError();
}
};
Subject.prototype.next = function (value) {
var _this = this;
errorContext(function () {
var e_1, _a;
_this._throwIfClosed();
if (!_this.isStopped) {
if (!_this.currentObservers) {
_this.currentObservers = Array.from(_this.observers);
}
try {
for (var _b = __values(_this.currentObservers), _c = _b.next(); !_c.done; _c = _b.next()) {
var observer = _c.value;
observer.next(value);
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
}
finally { if (e_1) throw e_1.error; }
}
}
});
};
Subject.prototype.error = function (err) {
var _this = this;
errorContext(function () {
_this._throwIfClosed();
if (!_this.isStopped) {
_this.hasError = _this.isStopped = true;
_this.thrownError = err;
var observers = _this.observers;
while (observers.length) {
observers.shift().error(err);
}
}
});
};
Subject.prototype.complete = function () {
var _this = this;
errorContext(function () {
_this._throwIfClosed();
if (!_this.isStopped) {
_this.isStopped = true;
var observers = _this.observers;
while (observers.length) {
observers.shift().complete();
}
}
});
};
Subject.prototype.unsubscribe = function () {
this.isStopped = this.closed = true;
this.observers = this.currentObservers = null;
};
Object.defineProperty(Subject.prototype, "observed", {
get: function () {
var _a;
return ((_a = this.observers) === null || _a === void 0 ? void 0 : _a.length) > 0;
},
enumerable: false,
configurable: true
});
Subject.prototype._trySubscribe = function (subscriber) {
this._throwIfClosed();
return _super.prototype._trySubscribe.call(this, subscriber);
};
Subject.prototype._subscribe = function (subscriber) {
this._throwIfClosed();
this._checkFinalizedStatuses(subscriber);
return this._innerSubscribe(subscriber);
};
Subject.prototype._innerSubscribe = function (subscriber) {
var _this = this;
var _a = this, hasError = _a.hasError, isStopped = _a.isStopped, observers = _a.observers;
if (hasError || isStopped) {
return EMPTY_SUBSCRIPTION;
}
this.currentObservers = null;
observers.push(subscriber);
return new Subscription(function () {
_this.currentObservers = null;
arrRemove(observers, subscriber);
});
};
Subject.prototype._checkFinalizedStatuses = function (subscriber) {
var _a = this, hasError = _a.hasError, thrownError = _a.thrownError, isStopped = _a.isStopped;
if (hasError) {
subscriber.error(thrownError);
}
else if (isStopped) {
subscriber.complete();
}
};
Subject.prototype.asObservable = function () {
var observable = new Observable();
observable.source = this;
return observable;
};
Subject.create = function (destination, source) {
return new AnonymousSubject(destination, source);
};
return Subject;
}(Observable));
export { Subject };
var AnonymousSubject = (function (_super) {
__extends(AnonymousSubject, _super);
function AnonymousSubject(destination, source) {
var _this = _super.call(this) || this;
_this.destination = destination;
_this.source = source;
return _this;
}
AnonymousSubject.prototype.next = function (value) {
var _a, _b;
(_b = (_a = this.destination) === null || _a === void 0 ? void 0 : _a.next) === null || _b === void 0 ? void 0 : _b.call(_a, value);
};
AnonymousSubject.prototype.error = function (err) {
var _a, _b;
(_b = (_a = this.destination) === null || _a === void 0 ? void 0 : _a.error) === null || _b === void 0 ? void 0 : _b.call(_a, err);
};
AnonymousSubject.prototype.complete = function () {
var _a, _b;
(_b = (_a = this.destination) === null || _a === void 0 ? void 0 : _a.complete) === null || _b === void 0 ? void 0 : _b.call(_a);
};
AnonymousSubject.prototype._subscribe = function (subscriber) {
var _a, _b;
return (_b = (_a = this.source) === null || _a === void 0 ? void 0 : _a.subscribe(subscriber)) !== null && _b !== void 0 ? _b : EMPTY_SUBSCRIPTION;
};
return AnonymousSubject;
}(Subject));
export { AnonymousSubject };
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