ducha-qianduan/node_modules/rxjs/internal/operators/withLatestFrom.js

"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 OuterSubscriber_1 = require("../OuterSubscriber");
var subscribeToResult_1 = require("../util/subscribeToResult");
function withLatestFrom() {
    var args = [];
    for (var _i = 0; _i < arguments.length; _i++) {
        args[_i] = arguments[_i];
    }
    return function (source) {
        var project;
        if (typeof args[args.length - 1] === 'function') {
            project = args.pop();
        }
        var observables = args;
        return source.lift(new WithLatestFromOperator(observables, project));
    };
}
exports.withLatestFrom = withLatestFrom;
var WithLatestFromOperator = (function () {
    function WithLatestFromOperator(observables, project) {
        this.observables = observables;
        this.project = project;
    }
    WithLatestFromOperator.prototype.call = function (subscriber, source) {
        return source.subscribe(new WithLatestFromSubscriber(subscriber, this.observables, this.project));
    };
    return WithLatestFromOperator;
}());
var WithLatestFromSubscriber = (function (_super) {
    __extends(WithLatestFromSubscriber, _super);
    function WithLatestFromSubscriber(destination, observables, project) {
        var _this = _super.call(this, destination) || this;
        _this.observables = observables;
        _this.project = project;
        _this.toRespond = [];
        var len = observables.length;
        _this.values = new Array(len);
        for (var i = 0; i < len; i++) {
            _this.toRespond.push(i);
        }
        for (var i = 0; i < len; i++) {
            var observable = observables[i];
            _this.add(subscribeToResult_1.subscribeToResult(_this, observable, undefined, i));
        }
        return _this;
    }
    WithLatestFromSubscriber.prototype.notifyNext = function (_outerValue, innerValue, outerIndex) {
        this.values[outerIndex] = innerValue;
        var toRespond = this.toRespond;
        if (toRespond.length > 0) {
            var found = toRespond.indexOf(outerIndex);
            if (found !== -1) {
                toRespond.splice(found, 1);
            }
        }
    };
    WithLatestFromSubscriber.prototype.notifyComplete = function () {
    };
    WithLatestFromSubscriber.prototype._next = function (value) {
        if (this.toRespond.length === 0) {
            var args = [value].concat(this.values);
            if (this.project) {
                this._tryProject(args);
            }
            else {
                this.destination.next(args);
            }
        }
    };
    WithLatestFromSubscriber.prototype._tryProject = function (args) {
        var result;
        try {
            result = this.project.apply(this, args);
        }
        catch (err) {
            this.destination.error(err);
            return;
        }
        this.destination.next(result);
    };
    return WithLatestFromSubscriber;
}(OuterSubscriber_1.OuterSubscriber));
//# sourceMappingURL=withLatestFrom.js.map