From aad0d6510c0f349c9c9d93fa044b1f8d5a15dbd1 Mon Sep 17 00:00:00 2001
From: Bryan Duxbury <bryanduxbury@apache.org>
Date: Wed, 8 Jun 2011 23:51:24 +0000
Subject: [PATCH] THRIFT-1200. js: JS compiler generates code that clobbers
 existing namespaces

Patch: Ilya Maykov

git-svn-id: https://svn.apache.org/repos/asf/thrift/trunk@1133606 13f79535-47bb-0310-9956-ffa450edef68
---
 compiler/cpp/src/generate/t_js_generator.cc | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/compiler/cpp/src/generate/t_js_generator.cc b/compiler/cpp/src/generate/t_js_generator.cc
index 6c618904..f925a4da 100644
--- a/compiler/cpp/src/generate/t_js_generator.cc
+++ b/compiler/cpp/src/generate/t_js_generator.cc
@@ -275,15 +275,10 @@ void t_js_generator::init_generator() {
   // TODO should the namespace just be in the directory structure for node?
   vector<string> ns_pieces = js_namespace_pieces( program_ );
   if( ns_pieces.size() > 0){
-      f_types_ << "var " << ns_pieces[0] << " = {};"<<endl;
-
-      pns = ns_pieces[0];
-
-      for(size_t i=1; i<ns_pieces.size(); i++){
-          pns += "." + ns_pieces[i];
-
-          f_types_ << pns << " = {}"<<endl;
-      }
+    for(size_t i = 0; i < ns_pieces.size(); ++i) {
+      pns += ((i == 0) ? "" : ".") + ns_pieces[i];
+      f_types_ << "if (typeof " << pns << " === 'undefined') " << pns << " = {};" << endl;
+    }
   }
 
 }
-- 
2.17.1