127 lines
3.6 KiB
JavaScript
127 lines
3.6 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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var Observable_1 = require("../Observable");
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var identity_1 = require("../util/identity");
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var isScheduler_1 = require("../util/isScheduler");
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function generate(initialStateOrOptions, condition, iterate, resultSelectorOrObservable, scheduler) {
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var resultSelector;
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var initialState;
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if (arguments.length == 1) {
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var options = initialStateOrOptions;
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initialState = options.initialState;
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condition = options.condition;
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iterate = options.iterate;
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resultSelector = options.resultSelector || identity_1.identity;
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scheduler = options.scheduler;
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}
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else if (resultSelectorOrObservable === undefined || isScheduler_1.isScheduler(resultSelectorOrObservable)) {
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initialState = initialStateOrOptions;
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resultSelector = identity_1.identity;
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scheduler = resultSelectorOrObservable;
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}
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else {
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initialState = initialStateOrOptions;
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resultSelector = resultSelectorOrObservable;
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}
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return new Observable_1.Observable(function (subscriber) {
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var state = initialState;
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if (scheduler) {
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return scheduler.schedule(dispatch, 0, {
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subscriber: subscriber,
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iterate: iterate,
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condition: condition,
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resultSelector: resultSelector,
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state: state
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});
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}
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do {
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if (condition) {
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var conditionResult = void 0;
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try {
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conditionResult = condition(state);
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}
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catch (err) {
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subscriber.error(err);
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return undefined;
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}
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if (!conditionResult) {
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subscriber.complete();
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break;
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}
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}
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var value = void 0;
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try {
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value = resultSelector(state);
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}
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catch (err) {
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subscriber.error(err);
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return undefined;
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}
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subscriber.next(value);
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if (subscriber.closed) {
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break;
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}
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try {
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state = iterate(state);
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}
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catch (err) {
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subscriber.error(err);
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return undefined;
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}
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} while (true);
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return undefined;
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});
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}
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exports.generate = generate;
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function dispatch(state) {
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var subscriber = state.subscriber, condition = state.condition;
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if (subscriber.closed) {
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return undefined;
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}
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if (state.needIterate) {
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try {
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state.state = state.iterate(state.state);
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}
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catch (err) {
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subscriber.error(err);
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return undefined;
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}
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}
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else {
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state.needIterate = true;
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}
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if (condition) {
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var conditionResult = void 0;
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try {
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conditionResult = condition(state.state);
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}
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catch (err) {
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subscriber.error(err);
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return undefined;
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}
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if (!conditionResult) {
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subscriber.complete();
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return undefined;
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}
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if (subscriber.closed) {
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return undefined;
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}
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}
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var value;
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try {
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value = state.resultSelector(state.state);
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}
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catch (err) {
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subscriber.error(err);
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return undefined;
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}
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if (subscriber.closed) {
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return undefined;
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}
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subscriber.next(value);
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if (subscriber.closed) {
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return undefined;
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}
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return this.schedule(state);
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}
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//# sourceMappingURL=generate.js.map
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