vscode-jsonrpc
Version:
A json rpc implementation over streams
89 lines • 3.25 kB
JavaScript
/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
;
var events_1 = require('./events');
var CancellationToken;
(function (CancellationToken) {
CancellationToken.None = Object.freeze({
isCancellationRequested: false,
onCancellationRequested: events_1.Event.None
});
CancellationToken.Cancelled = Object.freeze({
isCancellationRequested: true,
onCancellationRequested: events_1.Event.None
});
})(CancellationToken = exports.CancellationToken || (exports.CancellationToken = {}));
var shortcutEvent = Object.freeze(function (callback, context) {
var handle = setTimeout(callback.bind(context), 0);
return { dispose: function () { clearTimeout(handle); } };
});
var MutableToken = (function () {
function MutableToken() {
this._isCancelled = false;
}
MutableToken.prototype.cancel = function () {
if (!this._isCancelled) {
this._isCancelled = true;
if (this._emitter) {
this._emitter.fire(undefined);
this._emitter = undefined;
}
}
};
Object.defineProperty(MutableToken.prototype, "isCancellationRequested", {
get: function () {
return this._isCancelled;
},
enumerable: true,
configurable: true
});
Object.defineProperty(MutableToken.prototype, "onCancellationRequested", {
get: function () {
if (this._isCancelled) {
return shortcutEvent;
}
if (!this._emitter) {
this._emitter = new events_1.Emitter();
}
return this._emitter.event;
},
enumerable: true,
configurable: true
});
return MutableToken;
}());
var CancellationTokenSource = (function () {
function CancellationTokenSource() {
}
Object.defineProperty(CancellationTokenSource.prototype, "token", {
get: function () {
if (!this._token) {
// be lazy and create the token only when
// actually needed
this._token = new MutableToken();
}
return this._token;
},
enumerable: true,
configurable: true
});
CancellationTokenSource.prototype.cancel = function () {
if (!this._token) {
// save an object by returning the default
// cancelled token when cancellation happens
// before someone asks for the token
this._token = CancellationToken.Cancelled;
}
else {
this._token.cancel();
}
};
CancellationTokenSource.prototype.dispose = function () {
this.cancel();
};
return CancellationTokenSource;
}());
exports.CancellationTokenSource = CancellationTokenSource;
//# sourceMappingURL=cancellation.js.map