117 lines
2.9 KiB
JavaScript
117 lines
2.9 KiB
JavaScript
(function (global, factory) {
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typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('@most/prelude')) :
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typeof define === 'function' && define.amd ? define(['exports', '@most/prelude'], factory) :
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(factory((global.mostMulticast = global.mostMulticast || {}),global.mostPrelude));
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}(this, (function (exports,_most_prelude) { 'use strict';
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var MulticastDisposable = function MulticastDisposable (source, sink) {
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this.source = source
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this.sink = sink
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this.disposed = false
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};
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MulticastDisposable.prototype.dispose = function dispose () {
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if (this.disposed) {
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return
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}
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this.disposed = true
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var remaining = this.source.remove(this.sink)
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return remaining === 0 && this.source._dispose()
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};
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function tryEvent (t, x, sink) {
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try {
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sink.event(t, x)
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} catch (e) {
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sink.error(t, e)
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}
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}
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function tryEnd (t, x, sink) {
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try {
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sink.end(t, x)
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} catch (e) {
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sink.error(t, e)
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}
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}
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var dispose = function (disposable) { return disposable.dispose(); }
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var emptyDisposable = {
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dispose: function dispose$1 () {}
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}
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var MulticastSource = function MulticastSource (source) {
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this.source = source
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this.sinks = []
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this._disposable = emptyDisposable
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};
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MulticastSource.prototype.run = function run (sink, scheduler) {
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var n = this.add(sink)
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if (n === 1) {
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this._disposable = this.source.run(this, scheduler)
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}
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return new MulticastDisposable(this, sink)
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};
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MulticastSource.prototype._dispose = function _dispose () {
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var disposable = this._disposable
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this._disposable = emptyDisposable
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return Promise.resolve(disposable).then(dispose)
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};
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MulticastSource.prototype.add = function add (sink) {
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this.sinks = _most_prelude.append(sink, this.sinks)
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return this.sinks.length
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};
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MulticastSource.prototype.remove = function remove$1 (sink) {
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var i = _most_prelude.findIndex(sink, this.sinks)
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// istanbul ignore next
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if (i >= 0) {
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this.sinks = _most_prelude.remove(i, this.sinks)
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}
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return this.sinks.length
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};
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MulticastSource.prototype.event = function event (time, value) {
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var s = this.sinks
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if (s.length === 1) {
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return s[0].event(time, value)
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}
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for (var i = 0; i < s.length; ++i) {
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tryEvent(time, value, s[i])
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}
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};
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MulticastSource.prototype.end = function end (time, value) {
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var s = this.sinks
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for (var i = 0; i < s.length; ++i) {
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tryEnd(time, value, s[i])
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}
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};
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MulticastSource.prototype.error = function error (time, err) {
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var s = this.sinks
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for (var i = 0; i < s.length; ++i) {
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s[i].error(time, err)
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}
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};
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function multicast (stream) {
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var source = stream.source
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return source instanceof MulticastSource
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? stream
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: new stream.constructor(new MulticastSource(source))
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}
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exports['default'] = multicast;
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exports.MulticastSource = MulticastSource;
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Object.defineProperty(exports, '__esModule', { value: true });
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})));
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//# sourceMappingURL=multicast.js.map
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