mirror of https://gitee.com/bigwinds/arangodb
Updated events to 4.1.0
This commit is contained in:
Alan Plum
parent
ca793a3f5d
commit
47f691ed36
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@ -9,7 +9,7 @@ _stream_writable: 0.10.25
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assert: 0.11.0
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buffer: 0.11.0 (SlowBuffer)
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child_process: not supported
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events: 0.10.25
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events: 4.1.0
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http: not supported
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https: not supported
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net: compatibility
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@ -1,163 +1,263 @@
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// Copyright Joyent, Inc. and other Node contributors.
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// Copyright Node.js contributors. All rights reserved.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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'use strict';
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var domain;
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exports.usingDomains = false;
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function EventEmitter() {
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EventEmitter.init.call(this);
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}
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module.exports = EventEmitter;
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// Backwards-compat with node 0.10.x
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EventEmitter.EventEmitter = EventEmitter;
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EventEmitter.usingDomains = false;
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EventEmitter.prototype.domain = undefined;
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EventEmitter.prototype._events = undefined;
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EventEmitter.prototype._maxListeners = undefined;
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// By default EventEmitters will print a warning if more than 10 listeners are
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// added to it. This is a useful default which helps finding memory leaks.
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EventEmitter.defaultMaxListeners = 10;
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EventEmitter.init = function() {
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this.domain = null;
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if (exports.usingDomains) {
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if (EventEmitter.usingDomains) {
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// if there is an active domain, then attach to it.
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domain = domain || require('domain');
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if (domain.active && !(this instanceof domain.Domain)) {
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this.domain = domain.active;
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}
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}
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this._events = this._events || {};
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this._maxListeners = this._maxListeners || defaultMaxListeners;
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}
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exports.EventEmitter = EventEmitter;
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// By default EventEmitters will print a warning if more than
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// 10 listeners are added to it. This is a useful default which
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// helps finding memory leaks.
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//
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// Obviously not all Emitters should be limited to 10. This function allows
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// that to be increased. Set to zero for unlimited.
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var defaultMaxListeners = 10;
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EventEmitter.prototype.setMaxListeners = function(n) {
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if (typeof n !== 'number' || n < 0 || isNaN(n))
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throw TypeError('n must be a positive number');
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this._maxListeners = n;
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if (!this._events || this._events === Object.getPrototypeOf(this)._events) {
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this._events = {};
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this._eventsCount = 0;
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}
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this._maxListeners = this._maxListeners || undefined;
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};
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EventEmitter.prototype.emit = function(type) {
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var er, handler, len, args, i, listeners;
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// Obviously not all Emitters should be limited to 10. This function allows
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// that to be increased. Set to zero for unlimited.
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EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) {
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if (typeof n !== 'number' || n < 0 || isNaN(n))
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throw new TypeError('n must be a positive number');
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this._maxListeners = n;
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return this;
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};
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if (!this._events)
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this._events = {};
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function $getMaxListeners(that) {
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if (that._maxListeners === undefined)
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return EventEmitter.defaultMaxListeners;
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return that._maxListeners;
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}
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// If there is no 'error' event listener then throw.
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if (type === 'error') {
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if (!this._events.error ||
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(typeof this._events.error === 'object' &&
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!this._events.error.length)) {
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er = arguments[1];
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if (this.domain) {
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if (!er) er = new TypeError('Uncaught, unspecified "error" event.');
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er.domainEmitter = this;
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er.domain = this.domain;
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er.domainThrown = false;
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this.domain.emit('error', er);
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} else if (er instanceof Error) {
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throw er; // Unhandled 'error' event
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} else {
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throw TypeError('Uncaught, unspecified "error" event.');
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}
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return false;
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}
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EventEmitter.prototype.getMaxListeners = function getMaxListeners() {
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return $getMaxListeners(this);
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};
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// These standalone emit* functions are used to optimize calling of event
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// handlers for fast cases because emit() itself often has a variable number of
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// arguments and can be deoptimized because of that. These functions always have
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// the same number of arguments and thus do not get deoptimized, so the code
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// inside them can execute faster.
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function emitNone(handler, isFn, self) {
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if (isFn)
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handler.call(self);
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else {
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var len = handler.length;
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var listeners = arrayClone(handler, len);
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for (var i = 0; i < len; ++i)
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listeners[i].call(self);
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}
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}
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function emitOne(handler, isFn, self, arg1) {
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if (isFn)
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handler.call(self, arg1);
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else {
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var len = handler.length;
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var listeners = arrayClone(handler, len);
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for (var i = 0; i < len; ++i)
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listeners[i].call(self, arg1);
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}
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}
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function emitTwo(handler, isFn, self, arg1, arg2) {
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if (isFn)
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handler.call(self, arg1, arg2);
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else {
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var len = handler.length;
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var listeners = arrayClone(handler, len);
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for (var i = 0; i < len; ++i)
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listeners[i].call(self, arg1, arg2);
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}
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}
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function emitThree(handler, isFn, self, arg1, arg2, arg3) {
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if (isFn)
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handler.call(self, arg1, arg2, arg3);
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else {
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var len = handler.length;
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var listeners = arrayClone(handler, len);
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for (var i = 0; i < len; ++i)
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listeners[i].call(self, arg1, arg2, arg3);
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}
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}
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handler = this._events[type];
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function emitMany(handler, isFn, self, args) {
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if (isFn)
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handler.apply(self, args);
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else {
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var len = handler.length;
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var listeners = arrayClone(handler, len);
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for (var i = 0; i < len; ++i)
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listeners[i].apply(self, args);
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}
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}
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if (typeof handler === 'undefined')
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EventEmitter.prototype.emit = function emit(type) {
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var er, handler, len, args, i, events, domain;
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var needDomainExit = false;
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var doError = (type === 'error');
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events = this._events;
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if (events)
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doError = (doError && events.error == null);
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else if (!doError)
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return false;
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if (this.domain && this !== process)
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this.domain.enter();
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domain = this.domain;
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if (typeof handler === 'function') {
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switch (arguments.length) {
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// fast cases
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case 1:
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handler.call(this);
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break;
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case 2:
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handler.call(this, arguments[1]);
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break;
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case 3:
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handler.call(this, arguments[1], arguments[2]);
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break;
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// slower
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default:
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len = arguments.length;
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args = new Array(len - 1);
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for (i = 1; i < len; i++)
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args[i - 1] = arguments[i];
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handler.apply(this, args);
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// If there is no 'error' event listener then throw.
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if (doError) {
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er = arguments[1];
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if (domain) {
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if (!er)
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er = new Error('Uncaught, unspecified "error" event.');
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er.domainEmitter = this;
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er.domain = domain;
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er.domainThrown = false;
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domain.emit('error', er);
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} else if (er instanceof Error) {
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throw er; // Unhandled 'error' event
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} else {
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// At least give some kind of context to the user
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var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
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err.context = er;
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throw err;
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}
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} else if (typeof handler === 'object') {
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len = arguments.length;
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args = new Array(len - 1);
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for (i = 1; i < len; i++)
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args[i - 1] = arguments[i];
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listeners = handler.slice();
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len = listeners.length;
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for (i = 0; i < len; i++)
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listeners[i].apply(this, args);
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return false;
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}
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if (this.domain && this !== process)
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this.domain.exit();
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handler = events[type];
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if (!handler)
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return false;
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if (domain && this !== process) {
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domain.enter();
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needDomainExit = true;
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}
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var isFn = typeof handler === 'function';
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len = arguments.length;
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switch (len) {
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// fast cases
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case 1:
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emitNone(handler, isFn, this);
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break;
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case 2:
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emitOne(handler, isFn, this, arguments[1]);
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break;
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case 3:
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emitTwo(handler, isFn, this, arguments[1], arguments[2]);
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break;
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case 4:
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emitThree(handler, isFn, this, arguments[1], arguments[2], arguments[3]);
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break;
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// slower
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default:
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args = new Array(len - 1);
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for (i = 1; i < len; i++)
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args[i - 1] = arguments[i];
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emitMany(handler, isFn, this, args);
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}
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if (needDomainExit)
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domain.exit();
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return true;
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};
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EventEmitter.prototype.addListener = function(type, listener) {
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EventEmitter.prototype.addListener = function addListener(type, listener) {
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var m;
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var events;
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var existing;
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if (typeof listener !== 'function')
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throw TypeError('listener must be a function');
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throw new TypeError('listener must be a function');
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if (!this._events)
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this._events = {};
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events = this._events;
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if (!events) {
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events = this._events = {};
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this._eventsCount = 0;
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} else {
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// To avoid recursion in the case that type === "newListener"! Before
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// adding it to the listeners, first emit "newListener".
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if (events.newListener) {
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this.emit('newListener', type,
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listener.listener ? listener.listener : listener);
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// To avoid recursion in the case that type === "newListener"! Before
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// adding it to the listeners, first emit "newListener".
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if (this._events.newListener)
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this.emit('newListener', type, typeof listener.listener === 'function' ?
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listener.listener : listener);
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// Re-assign `events` because a newListener handler could have caused the
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// this._events to be assigned to a new object
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events = this._events;
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}
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existing = events[type];
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}
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if (!this._events[type])
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if (!existing) {
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// Optimize the case of one listener. Don't need the extra array object.
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this._events[type] = listener;
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else if (typeof this._events[type] === 'object')
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// If we've already got an array, just append.
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this._events[type].push(listener);
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else
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// Adding the second element, need to change to array.
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this._events[type] = [this._events[type], listener];
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existing = events[type] = listener;
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++this._eventsCount;
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} else {
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if (typeof existing === 'function') {
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// Adding the second element, need to change to array.
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existing = events[type] = [existing, listener];
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} else {
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// If we've already got an array, just append.
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existing.push(listener);
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}
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// Check for listener leak
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if (typeof this._events[type] === 'object' && !this._events[type].warned) {
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m = this._maxListeners;
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if (m && m > 0 && this._events[type].length > m) {
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this._events[type].warned = true;
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console.error('(node) warning: possible EventEmitter memory ' +
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'leak detected. %d listeners added. ' +
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'Use emitter.setMaxListeners() to increase limit.',
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this._events[type].length);
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console.trace();
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// Check for listener leak
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if (!existing.warned) {
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m = $getMaxListeners(this);
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if (m && m > 0 && existing.length > m) {
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existing.warned = true;
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console.error('(node) warning: possible EventEmitter memory ' +
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'leak detected. %d %s listeners added. ' +
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'Use emitter.setMaxListeners() to increase limit.',
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existing.length, type);
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console.trace();
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}
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}
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}
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@ -166,9 +266,9 @@ EventEmitter.prototype.addListener = function(type, listener) {
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EventEmitter.prototype.on = EventEmitter.prototype.addListener;
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EventEmitter.prototype.once = function(type, listener) {
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EventEmitter.prototype.once = function once(type, listener) {
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if (typeof listener !== 'function')
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throw TypeError('listener must be a function');
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throw new TypeError('listener must be a function');
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var fired = false;
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@ -188,109 +288,167 @@ EventEmitter.prototype.once = function(type, listener) {
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};
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// emits a 'removeListener' event iff the listener was removed
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EventEmitter.prototype.removeListener = function(type, listener) {
|
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var list, position, length, i;
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EventEmitter.prototype.removeListener =
|
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function removeListener(type, listener) {
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var list, events, position, i;
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|
||||
if (typeof listener !== 'function')
|
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throw TypeError('listener must be a function');
|
||||
if (typeof listener !== 'function')
|
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throw new TypeError('listener must be a function');
|
||||
|
||||
if (!this._events || !this._events[type])
|
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return this;
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events = this._events;
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if (!events)
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return this;
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||||
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list = this._events[type];
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||||
length = list.length;
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||||
position = -1;
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||||
list = events[type];
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||||
if (!list)
|
||||
return this;
|
||||
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if (list === listener ||
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||||
(typeof list.listener === 'function' && list.listener === listener)) {
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delete this._events[type];
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if (this._events.removeListener)
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this.emit('removeListener', type, listener);
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if (list === listener || (list.listener && list.listener === listener)) {
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if (--this._eventsCount === 0)
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this._events = {};
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else {
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delete events[type];
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if (events.removeListener)
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this.emit('removeListener', type, listener);
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}
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} else if (typeof list !== 'function') {
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position = -1;
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||||
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||||
} else if (typeof list === 'object') {
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for (i = length; i-- > 0;) {
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if (list[i] === listener ||
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(list[i].listener && list[i].listener === listener)) {
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position = i;
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||||
break;
|
||||
for (i = list.length; i-- > 0;) {
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if (list[i] === listener ||
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||||
(list[i].listener && list[i].listener === listener)) {
|
||||
position = i;
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||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (position < 0)
|
||||
return this;
|
||||
|
||||
if (list.length === 1) {
|
||||
list[0] = undefined;
|
||||
if (--this._eventsCount === 0) {
|
||||
this._events = {};
|
||||
return this;
|
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} else {
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||||
delete events[type];
|
||||
}
|
||||
} else {
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||||
spliceOne(list, position);
|
||||
}
|
||||
|
||||
if (events.removeListener)
|
||||
this.emit('removeListener', type, listener);
|
||||
}
|
||||
}
|
||||
|
||||
if (position < 0)
|
||||
return this;
|
||||
};
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||||
|
||||
if (list.length === 1) {
|
||||
list.length = 0;
|
||||
delete this._events[type];
|
||||
} else {
|
||||
list.splice(position, 1);
|
||||
}
|
||||
EventEmitter.prototype.removeAllListeners =
|
||||
function removeAllListeners(type) {
|
||||
var listeners, events;
|
||||
|
||||
if (this._events.removeListener)
|
||||
this.emit('removeListener', type, listener);
|
||||
}
|
||||
events = this._events;
|
||||
if (!events)
|
||||
return this;
|
||||
|
||||
return this;
|
||||
};
|
||||
// not listening for removeListener, no need to emit
|
||||
if (!events.removeListener) {
|
||||
if (arguments.length === 0) {
|
||||
this._events = {};
|
||||
this._eventsCount = 0;
|
||||
} else if (events[type]) {
|
||||
if (--this._eventsCount === 0)
|
||||
this._events = {};
|
||||
else
|
||||
delete events[type];
|
||||
}
|
||||
return this;
|
||||
}
|
||||
|
||||
EventEmitter.prototype.removeAllListeners = function(type) {
|
||||
var key, listeners;
|
||||
// emit removeListener for all listeners on all events
|
||||
if (arguments.length === 0) {
|
||||
var keys = Object.keys(events);
|
||||
for (var i = 0, key; i < keys.length; ++i) {
|
||||
key = keys[i];
|
||||
if (key === 'removeListener') continue;
|
||||
this.removeAllListeners(key);
|
||||
}
|
||||
this.removeAllListeners('removeListener');
|
||||
this._events = {};
|
||||
this._eventsCount = 0;
|
||||
return this;
|
||||
}
|
||||
|
||||
if (!this._events)
|
||||
return this;
|
||||
listeners = events[type];
|
||||
|
||||
// not listening for removeListener, no need to emit
|
||||
if (!this._events.removeListener) {
|
||||
if (arguments.length === 0)
|
||||
this._events = {};
|
||||
else if (this._events[type])
|
||||
delete this._events[type];
|
||||
return this;
|
||||
}
|
||||
if (typeof listeners === 'function') {
|
||||
this.removeListener(type, listeners);
|
||||
} else if (listeners) {
|
||||
// LIFO order
|
||||
do {
|
||||
this.removeListener(type, listeners[listeners.length - 1]);
|
||||
} while (listeners[0]);
|
||||
}
|
||||
|
||||
// emit removeListener for all listeners on all events
|
||||
if (arguments.length === 0) {
|
||||
for (key in this._events) {
|
||||
if (key === 'removeListener') continue;
|
||||
this.removeAllListeners(key);
|
||||
}
|
||||
this.removeAllListeners('removeListener');
|
||||
this._events = {};
|
||||
return this;
|
||||
}
|
||||
return this;
|
||||
};
|
||||
|
||||
listeners = this._events[type];
|
||||
|
||||
if (typeof listeners === 'function') {
|
||||
this.removeListener(type, listeners);
|
||||
} else if (Array.isArray(listeners)) {
|
||||
// LIFO order
|
||||
while (listeners.length)
|
||||
this.removeListener(type, listeners[listeners.length - 1]);
|
||||
}
|
||||
delete this._events[type];
|
||||
|
||||
return this;
|
||||
};
|
||||
|
||||
EventEmitter.prototype.listeners = function(type) {
|
||||
EventEmitter.prototype.listeners = function listeners(type) {
|
||||
var evlistener;
|
||||
var ret;
|
||||
if (!this._events || !this._events[type])
|
||||
var events = this._events;
|
||||
|
||||
if (!events)
|
||||
ret = [];
|
||||
else if (typeof this._events[type] === 'function')
|
||||
ret = [this._events[type]];
|
||||
else
|
||||
ret = this._events[type].slice();
|
||||
else {
|
||||
evlistener = events[type];
|
||||
if (!evlistener)
|
||||
ret = [];
|
||||
else if (typeof evlistener === 'function')
|
||||
ret = [evlistener];
|
||||
else
|
||||
ret = arrayClone(evlistener, evlistener.length);
|
||||
}
|
||||
|
||||
return ret;
|
||||
};
|
||||
|
||||
EventEmitter.listenerCount = function(emitter, type) {
|
||||
var ret;
|
||||
if (!emitter._events || !emitter._events[type])
|
||||
ret = 0;
|
||||
else if (typeof emitter._events[type] === 'function')
|
||||
ret = 1;
|
||||
else
|
||||
ret = emitter._events[type].length;
|
||||
return ret;
|
||||
if (typeof emitter.listenerCount === 'function') {
|
||||
return emitter.listenerCount(type);
|
||||
} else {
|
||||
return listenerCount.call(emitter, type);
|
||||
}
|
||||
};
|
||||
|
||||
EventEmitter.prototype.listenerCount = listenerCount;
|
||||
function listenerCount(type) {
|
||||
const events = this._events;
|
||||
|
||||
if (events) {
|
||||
const evlistener = events[type];
|
||||
|
||||
if (typeof evlistener === 'function') {
|
||||
return 1;
|
||||
} else if (evlistener) {
|
||||
return evlistener.length;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
};
|
||||
|
||||
// About 1.5x faster than the two-arg version of Array#splice().
|
||||
function spliceOne(list, index) {
|
||||
for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1)
|
||||
list[i] = list[k];
|
||||
list.pop();
|
||||
}
|
||||
|
||||
function arrayClone(arr, i) {
|
||||
var copy = new Array(i);
|
||||
while (i--)
|
||||
copy[i] = arr[i];
|
||||
return copy;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue