From 906af889d91808a798b046631d30afeff5b1c9a7 Mon Sep 17 00:00:00 2001
From: johnnyman727 <johnnyman727@gmail.com>
Date: Sat, 3 May 2014 12:04:56 -0700
Subject: [PATCH] Moved queue code into npm module so it can be used for other
 modules

---
 index.js            |  4 ++--
 lib/simple-queue.js | 34 ----------------------------------
 package.json        |  3 +++
 3 files changed, 5 insertions(+), 36 deletions(-)
 delete mode 100644 lib/simple-queue.js

diff --git a/index.js b/index.js
index 600682d..ddd2c3c 100644
--- a/index.js
+++ b/index.js
@@ -1,6 +1,6 @@
 var util = require('util');
 var EventEmitter = require('events').EventEmitter;
-var q = require('./lib/simple-queue');
+var queue = require('sync-queue');
 
 // The SparkFun breakout board defaults to 1, set to 0 if SA0 jumper on the bottom of the board is set
 var I2C_ADDRESS = 0x1D;  // 0x1D if SA0 is high, 0x1C if low
@@ -18,7 +18,7 @@ function Accelerometer (hardware, callback)
 {
   var self = this;
   // Command Queue
-  self.queue = q.createQueue();
+  self.queue = new queue();
   // Port assignment
   self.hardware = hardware;
   // Rate at which data is collected and is ready to be read
diff --git a/lib/simple-queue.js b/lib/simple-queue.js
deleted file mode 100644
index d9a79f8..0000000
--- a/lib/simple-queue.js
+++ /dev/null
@@ -1,34 +0,0 @@
-function createQueue() {
-
-  // Create an empty array of commands
-  var queue = [];
-  // We're inactive to begin with
-  queue.active = false;
-  // Method for adding command chain to the queue
-  queue.place = function (command) { 
-    // Push the command onto the command array
-    queue.push(command);
-    // If we're currently inactive, start processing
-    if (!queue.active) queue.next();
-  };
-  // Method for calling the next command chain in the array
-  queue.next = function () {
-    // If this is the end of the queue
-    if (!queue.length) {
-      // We're no longer active
-      queue.active = false;
-      // Stop execution
-      return;
-    } 
-    // Grab the next command
-    var command = queue.shift();
-    // We're active
-    queue.active = true;
-    // Call the command
-    command();
-  };
-
-  return queue;
-}
-
-module.exports.createQueue = createQueue;
\ No newline at end of file
diff --git a/package.json b/package.json
index f2cbcb8..6eb17ce 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,9 @@
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"
   },
+  "dependencies" : {
+    "sync-queue" : "*"
+  },
   "hardware": {
     "./examples": false
   },