first commit

app_vue/node_modules/websocket-extensions/lib/pipeline/cell.js

@@ -0,0 +1,53 @@
+'use strict';
+
+var Functor = require('./functor'),
+    Pledge  = require('./pledge');
+
+var Cell = function(tuple) {
+  this._ext     = tuple[0];
+  this._session = tuple[1];
+
+  this._functors = {
+    incoming: new Functor(this._session, 'processIncomingMessage'),
+    outgoing: new Functor(this._session, 'processOutgoingMessage')
+  };
+};
+
+Cell.prototype.pending = function(direction) {
+  var functor = this._functors[direction];
+  if (!functor._stopped) functor.pending += 1;
+};
+
+Cell.prototype.incoming = function(error, message, callback, context) {
+  this._exec('incoming', error, message, callback, context);
+};
+
+Cell.prototype.outgoing = function(error, message, callback, context) {
+  this._exec('outgoing', error, message, callback, context);
+};
+
+Cell.prototype.close = function() {
+  this._closed = this._closed || new Pledge();
+  this._doClose();
+  return this._closed;
+};
+
+Cell.prototype._exec = function(direction, error, message, callback, context) {
+  this._functors[direction].call(error, message, function(err, msg) {
+    if (err) err.message = this._ext.name + ': ' + err.message;
+    callback.call(context, err, msg);
+    this._doClose();
+  }, this);
+};
+
+Cell.prototype._doClose = function() {
+  var fin  = this._functors.incoming,
+      fout = this._functors.outgoing;
+
+  if (!this._closed || fin.pending + fout.pending !== 0) return;
+  if (this._session) this._session.close();
+  this._session = null;
+  this._closed.done();
+};
+
+module.exports = Cell;