rxjs
Version:
Reactive Extensions for modern JavaScript
174 lines • 6.93 kB
JavaScript
;
var __values = (this && this.__values) || function(o) {
var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
if (m) return m.call(o);
if (o && typeof o.length === "number") return {
next: function () {
if (o && i >= o.length) o = void 0;
return { value: o && o[i++], done: !o };
}
};
throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
};
var __read = (this && this.__read) || function (o, n) {
var m = typeof Symbol === "function" && o[Symbol.iterator];
if (!m) return o;
var i = m.call(o), r, ar = [], e;
try {
while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
}
catch (error) { e = { error: error }; }
finally {
try {
if (r && !r.done && (m = i["return"])) m.call(i);
}
finally { if (e) throw e.error; }
}
return ar;
};
var __spread = (this && this.__spread) || function () {
for (var ar = [], i = 0; i < arguments.length; i++) ar = ar.concat(__read(arguments[i]));
return ar;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.isSubscription = exports.EMPTY_SUBSCRIPTION = exports.Subscription = void 0;
var isFunction_1 = require("./util/isFunction");
var UnsubscriptionError_1 = require("./util/UnsubscriptionError");
var arrRemove_1 = require("./util/arrRemove");
var Subscription = (function () {
function Subscription(initialTeardown) {
this.initialTeardown = initialTeardown;
this.closed = false;
this._parentage = null;
this._teardowns = null;
}
Subscription.prototype.unsubscribe = function () {
var e_1, _a, e_2, _b;
var errors;
if (!this.closed) {
this.closed = true;
var _parentage = this._parentage;
if (Array.isArray(_parentage)) {
try {
for (var _parentage_1 = __values(_parentage), _parentage_1_1 = _parentage_1.next(); !_parentage_1_1.done; _parentage_1_1 = _parentage_1.next()) {
var parent_1 = _parentage_1_1.value;
parent_1.remove(this);
}
}
catch (e_1_1) { e_1 = { error: e_1_1 }; }
finally {
try {
if (_parentage_1_1 && !_parentage_1_1.done && (_a = _parentage_1.return)) _a.call(_parentage_1);
}
finally { if (e_1) throw e_1.error; }
}
}
else {
_parentage === null || _parentage === void 0 ? void 0 : _parentage.remove(this);
}
var initialTeardown = this.initialTeardown;
if (isFunction_1.isFunction(initialTeardown)) {
try {
initialTeardown();
}
catch (e) {
errors = e instanceof UnsubscriptionError_1.UnsubscriptionError ? e.errors : [e];
}
}
var _teardowns = this._teardowns;
if (_teardowns) {
this._teardowns = null;
try {
for (var _teardowns_1 = __values(_teardowns), _teardowns_1_1 = _teardowns_1.next(); !_teardowns_1_1.done; _teardowns_1_1 = _teardowns_1.next()) {
var teardown_1 = _teardowns_1_1.value;
try {
execTeardown(teardown_1);
}
catch (err) {
errors = errors !== null && errors !== void 0 ? errors : [];
if (err instanceof UnsubscriptionError_1.UnsubscriptionError) {
errors = __spread(errors, err.errors);
}
else {
errors.push(err);
}
}
}
}
catch (e_2_1) { e_2 = { error: e_2_1 }; }
finally {
try {
if (_teardowns_1_1 && !_teardowns_1_1.done && (_b = _teardowns_1.return)) _b.call(_teardowns_1);
}
finally { if (e_2) throw e_2.error; }
}
}
if (errors) {
throw new UnsubscriptionError_1.UnsubscriptionError(errors);
}
}
};
Subscription.prototype.add = function (teardown) {
var _a;
if (teardown && teardown !== this) {
if (this.closed) {
execTeardown(teardown);
}
else {
if (teardown instanceof Subscription) {
if (teardown.closed || teardown._hasParent(this)) {
return;
}
teardown._addParent(this);
}
(this._teardowns = (_a = this._teardowns) !== null && _a !== void 0 ? _a : []).push(teardown);
}
}
};
Subscription.prototype._hasParent = function (parent) {
var _parentage = this._parentage;
return _parentage === parent || (Array.isArray(_parentage) && _parentage.includes(parent));
};
Subscription.prototype._addParent = function (parent) {
var _parentage = this._parentage;
this._parentage = Array.isArray(_parentage) ? (_parentage.push(parent), _parentage) : _parentage ? [_parentage, parent] : parent;
};
Subscription.prototype._removeParent = function (parent) {
var _parentage = this._parentage;
if (_parentage === parent) {
this._parentage = null;
}
else if (Array.isArray(_parentage)) {
arrRemove_1.arrRemove(_parentage, parent);
}
};
Subscription.prototype.remove = function (teardown) {
var _teardowns = this._teardowns;
_teardowns && arrRemove_1.arrRemove(_teardowns, teardown);
if (teardown instanceof Subscription) {
teardown._removeParent(this);
}
};
Subscription.EMPTY = (function () {
var empty = new Subscription();
empty.closed = true;
return empty;
})();
return Subscription;
}());
exports.Subscription = Subscription;
exports.EMPTY_SUBSCRIPTION = Subscription.EMPTY;
function isSubscription(value) {
return (value instanceof Subscription ||
(value && 'closed' in value && isFunction_1.isFunction(value.remove) && isFunction_1.isFunction(value.add) && isFunction_1.isFunction(value.unsubscribe)));
}
exports.isSubscription = isSubscription;
function execTeardown(teardown) {
if (isFunction_1.isFunction(teardown)) {
teardown();
}
else {
teardown.unsubscribe();
}
}
//# sourceMappingURL=Subscription.js.map