From 25616f3ad2132b9dd7d06aba8c03ad7d8fb97f12 Mon Sep 17 00:00:00 2001
From: "vassili.gorshkov" <vassili.gorshkov@atlasgurus.com>
Date: Thu, 7 Sep 2017 17:54:24 -0700
Subject: [PATCH 1/2] Improved performance by the factor of 10 for the case of
 a lookup $.a.b.c The change is simple caching of the parse(), normalize() and
 strigify() functions

---
 lib/index.js | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/lib/index.js b/lib/index.js
index 8f5a832..67ce158 100755
--- a/lib/index.js
+++ b/lib/index.js
@@ -2,6 +2,7 @@ var assert = require('assert');
 var dict = require('./dict');
 var Parser = require('./parser');
 var Handlers = require('./handlers');
+var _ = require('underscore');
 
 var JSONPath = function() {
   this.initialize.apply(this, arguments);
@@ -9,6 +10,7 @@ var JSONPath = function() {
 
 JSONPath.prototype.initialize = function() {
   this.parser = new Parser();
+  this.parser.parse = _.memoize(this.parser.parse);
   this.handlers = new Handlers();
 };
 
@@ -152,7 +154,7 @@ JSONPath.prototype.nodes = function(obj, string, count) {
   return count ? matches.slice(0, count) : matches;
 };
 
-JSONPath.prototype.stringify = function(path) {
+JSONPath.prototype.stringify = _.memoize(function(path) {
 
   assert.ok(path, "we need a path");
 
@@ -187,9 +189,9 @@ JSONPath.prototype.stringify = function(path) {
   });
 
   return string;
-}
+});
 
-JSONPath.prototype._normalize = function(path) {
+JSONPath.prototype._normalize = _.memoize(function(path) {
 
   assert.ok(path, "we need a path");
 
@@ -234,7 +236,7 @@ JSONPath.prototype._normalize = function(path) {
   }
 
   throw new Error("couldn't understand path " + path);
-}
+});
 
 function _is_string(obj) {
   return Object.prototype.toString.call(obj) == '[object String]';

From fbf542f3130bbf319783bd5a0a434e45786f854d Mon Sep 17 00:00:00 2001
From: "vassili.gorshkov" <vassili.gorshkov@atlasgurus.com>
Date: Fri, 8 Sep 2017 12:22:50 -0700
Subject: [PATCH 2/2] squash

---
 lib/index.js | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/lib/index.js b/lib/index.js
index 67ce158..8f5a832 100755
--- a/lib/index.js
+++ b/lib/index.js
@@ -2,7 +2,6 @@ var assert = require('assert');
 var dict = require('./dict');
 var Parser = require('./parser');
 var Handlers = require('./handlers');
-var _ = require('underscore');
 
 var JSONPath = function() {
   this.initialize.apply(this, arguments);
@@ -10,7 +9,6 @@ var JSONPath = function() {
 
 JSONPath.prototype.initialize = function() {
   this.parser = new Parser();
-  this.parser.parse = _.memoize(this.parser.parse);
   this.handlers = new Handlers();
 };
 
@@ -154,7 +152,7 @@ JSONPath.prototype.nodes = function(obj, string, count) {
   return count ? matches.slice(0, count) : matches;
 };
 
-JSONPath.prototype.stringify = _.memoize(function(path) {
+JSONPath.prototype.stringify = function(path) {
 
   assert.ok(path, "we need a path");
 
@@ -189,9 +187,9 @@ JSONPath.prototype.stringify = _.memoize(function(path) {
   });
 
   return string;
-});
+}
 
-JSONPath.prototype._normalize = _.memoize(function(path) {
+JSONPath.prototype._normalize = function(path) {
 
   assert.ok(path, "we need a path");
 
@@ -236,7 +234,7 @@ JSONPath.prototype._normalize = _.memoize(function(path) {
   }
 
   throw new Error("couldn't understand path " + path);
-});
+}
 
 function _is_string(obj) {
   return Object.prototype.toString.call(obj) == '[object String]';