132 lines
4.8 KiB
JavaScript
132 lines
4.8 KiB
JavaScript
"use strict";
|
|
/*
|
|
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
|
* SPDX-License-Identifier: Apache-2.0.
|
|
*/
|
|
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 (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
|
|
return extendStatics(d, b);
|
|
};
|
|
return function (d, b) {
|
|
if (typeof b !== "function" && b !== null)
|
|
throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
|
|
extendStatics(d, b);
|
|
function __() { this.constructor = d; }
|
|
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
|
|
};
|
|
})();
|
|
var __read = (this && this.__read) || function (o, n) {
|
|
var m = typeof Symbol === "function" && o[Symbol.iterator];
|
|
if (!m) return o;
|
|
var i = m.call(o), r, ar = [], e;
|
|
try {
|
|
while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
|
|
}
|
|
catch (error) { e = { error: error }; }
|
|
finally {
|
|
try {
|
|
if (r && !r.done && (m = i["return"])) m.call(i);
|
|
}
|
|
finally { if (e) throw e.error; }
|
|
}
|
|
return ar;
|
|
};
|
|
var __spreadArray = (this && this.__spreadArray) || function (to, from, pack) {
|
|
if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
|
|
if (ar || !(i in from)) {
|
|
if (!ar) ar = Array.prototype.slice.call(from, 0, i);
|
|
ar[i] = from[i];
|
|
}
|
|
}
|
|
return to.concat(ar || Array.prototype.slice.call(from));
|
|
};
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.BufferedEventEmitter = void 0;
|
|
/**
|
|
* Module for base types related to event emission
|
|
*
|
|
* @packageDocumentation
|
|
* @module event
|
|
*/
|
|
var events_1 = require("events");
|
|
/**
|
|
* @internal
|
|
*/
|
|
var BufferedEvent = /** @class */ (function () {
|
|
function BufferedEvent(event, args) {
|
|
this.event = event;
|
|
this.args = args;
|
|
}
|
|
return BufferedEvent;
|
|
}());
|
|
/**
|
|
* Provides buffered event emitting semantics, similar to many Node-style streams.
|
|
* Subclasses will override EventEmitter.on() and trigger uncorking.
|
|
* NOTE: It is HIGHLY recommended that uncorking should always be done via
|
|
* ```process.nextTick()```, not during the EventEmitter.on() call.
|
|
*
|
|
* See also: [Node writable streams](https://nodejs.org/api/stream.html#stream_writable_cork)
|
|
*
|
|
* @category Events
|
|
*/
|
|
var BufferedEventEmitter = /** @class */ (function (_super) {
|
|
__extends(BufferedEventEmitter, _super);
|
|
function BufferedEventEmitter() {
|
|
var _this = _super.call(this) || this;
|
|
_this.corked = false;
|
|
return _this;
|
|
}
|
|
/**
|
|
* Forces all written events to be buffered in memory. The buffered data will be
|
|
* flushed when {@link BufferedEventEmitter.uncork} is called.
|
|
*/
|
|
BufferedEventEmitter.prototype.cork = function () {
|
|
this.corked = true;
|
|
};
|
|
/**
|
|
* Flushes all data buffered since {@link BufferedEventEmitter.cork} was called.
|
|
*
|
|
* NOTE: It is HIGHLY recommended that uncorking should always be done via
|
|
* ``` process.nextTick```, not during the ```EventEmitter.on()``` call.
|
|
*/
|
|
BufferedEventEmitter.prototype.uncork = function () {
|
|
this.corked = false;
|
|
while (this.eventQueue) {
|
|
var event_1 = this.eventQueue;
|
|
_super.prototype.emit.apply(this, __spreadArray([event_1.event], __read(event_1.args), false));
|
|
this.eventQueue = this.eventQueue.next;
|
|
}
|
|
};
|
|
/**
|
|
* Synchronously calls each of the listeners registered for the event key supplied
|
|
* in registration order. If the {@link BufferedEventEmitter} is currently corked,
|
|
* the event will be buffered until {@link BufferedEventEmitter.uncork} is called.
|
|
* @param event The name of the event
|
|
* @param args Event payload
|
|
*/
|
|
BufferedEventEmitter.prototype.emit = function (event) {
|
|
var args = [];
|
|
for (var _i = 1; _i < arguments.length; _i++) {
|
|
args[_i - 1] = arguments[_i];
|
|
}
|
|
if (this.corked) {
|
|
// queue requests in order
|
|
var last = this.lastQueuedEvent;
|
|
this.lastQueuedEvent = new BufferedEvent(event, args);
|
|
if (last) {
|
|
last.next = this.lastQueuedEvent;
|
|
}
|
|
else {
|
|
this.eventQueue = this.lastQueuedEvent;
|
|
}
|
|
return this.listeners(event).length > 0;
|
|
}
|
|
return _super.prototype.emit.apply(this, __spreadArray([event], __read(args), false));
|
|
};
|
|
return BufferedEventEmitter;
|
|
}(events_1.EventEmitter));
|
|
exports.BufferedEventEmitter = BufferedEventEmitter;
|
|
//# sourceMappingURL=event.js.map
|