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79 lines
2.9 KiB
79 lines
2.9 KiB
4 years ago
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"use strict";
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
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return extendStatics(d, b);
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}
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return function (d, b) {
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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Object.defineProperty(exports, "__esModule", { value: true });
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var OuterSubscriber_1 = require("../OuterSubscriber");
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var subscribeToResult_1 = require("../util/subscribeToResult");
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function distinct(keySelector, flushes) {
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return function (source) { return source.lift(new DistinctOperator(keySelector, flushes)); };
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}
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exports.distinct = distinct;
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var DistinctOperator = (function () {
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function DistinctOperator(keySelector, flushes) {
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this.keySelector = keySelector;
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this.flushes = flushes;
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}
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DistinctOperator.prototype.call = function (subscriber, source) {
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return source.subscribe(new DistinctSubscriber(subscriber, this.keySelector, this.flushes));
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};
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return DistinctOperator;
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}());
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var DistinctSubscriber = (function (_super) {
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__extends(DistinctSubscriber, _super);
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function DistinctSubscriber(destination, keySelector, flushes) {
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var _this = _super.call(this, destination) || this;
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_this.keySelector = keySelector;
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_this.values = new Set();
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if (flushes) {
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_this.add(subscribeToResult_1.subscribeToResult(_this, flushes));
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}
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return _this;
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}
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DistinctSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
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this.values.clear();
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};
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DistinctSubscriber.prototype.notifyError = function (error, innerSub) {
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this._error(error);
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};
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DistinctSubscriber.prototype._next = function (value) {
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if (this.keySelector) {
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this._useKeySelector(value);
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}
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else {
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this._finalizeNext(value, value);
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}
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};
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DistinctSubscriber.prototype._useKeySelector = function (value) {
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var key;
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var destination = this.destination;
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try {
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key = this.keySelector(value);
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}
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catch (err) {
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destination.error(err);
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return;
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}
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this._finalizeNext(key, value);
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};
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DistinctSubscriber.prototype._finalizeNext = function (key, value) {
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var values = this.values;
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if (!values.has(key)) {
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values.add(key);
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this.destination.next(value);
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}
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};
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return DistinctSubscriber;
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}(OuterSubscriber_1.OuterSubscriber));
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exports.DistinctSubscriber = DistinctSubscriber;
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//# sourceMappingURL=distinct.js.map
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