Improve simple string and number performance by 5-15%

Author: Ruben Bridgewater

lib/parser.js

@@ -16,20 +16,20 @@ var notDecreased = 0
  */
 function parseSimpleNumbers (parser) {
   var offset = parser.offset
-  var length = parser.buffer.length
+  var length = parser.buffer.length - 1
   var number = 0
-  var sign = false
+  var sign = 1
 
   if (parser.buffer[offset] === 45) {
-    sign = true
+    sign = -1
     offset++
   }
 
   while (offset < length) {
     var c1 = parser.buffer[offset++]
-    if (c1 === 13 && parser.buffer[offset] === 10) { // \r\n
+    if (c1 === 13) { // \r\n
       parser.offset = offset + 1
-      return sign ? -number : number
+      return sign * number
     }
     number = (number * 10) + (c1 - 48)
   }
@@ -103,12 +103,12 @@ function convertBufferRange (parser, start, end) {
 function parseSimpleStringViaOffset (parser) {
   var start = parser.offset
   var offset = parser.offset
-  var length = parser.buffer.length
+  var length = parser.buffer.length - 1
   var buffer = parser.buffer
 
   while (offset < length) {
-    if (buffer[offset++] === 10) { // \r\n
-      return convertBufferRange(parser, start, offset - 2)
+    if (buffer[offset++] === 13) { // \r\n
+      return convertBufferRange(parser, start, offset - 1)
     }
   }
 }
@@ -207,7 +207,7 @@ function parseArray (parser) {
   }
 
   var responses = new Array(length)
-  var bufferLength = parser.buffer.length
+  var bufferLength = parser.buffer.length - 3
   for (var i = 0; i < length; i++) {
     if (parser.offset >= bufferLength) {
       return