From 07b1bbfe7f088fc11f16db628337ce987792801e Mon Sep 17 00:00:00 2001
From: Duy-Nguyen Ta <thduynguyen@gmail.com>
Date: Sat, 18 Mar 2017 18:29:53 -0400
Subject: [PATCH] remove namespace requirement for cython wrapper

Only for unittesting wrap geometry.h, not yet tested in real python/cython
---
 wrap/Class.cpp   |  7 +++++--
 wrap/Qualified.h | 18 ++++++------------
 2 files changed, 11 insertions(+), 14 deletions(-)

diff --git a/wrap/Class.cpp b/wrap/Class.cpp
index 9191a380f..97d57616f 100644
--- a/wrap/Class.cpp
+++ b/wrap/Class.cpp
@@ -730,8 +730,11 @@ void Class::python_wrapper(FileWriter& wrapperFile) const {
 
 /* ************************************************************************* */
 void Class::emit_cython_pxd(FileWriter& pxdFile) const {
-  pxdFile.oss << "cdef extern from \"" << includeFile << "\" namespace \""
-                << qualifiedNamespaces("::") << "\":" << endl;
+  pxdFile.oss << "cdef extern from \"" << includeFile << "\"";
+  string ns = qualifiedNamespaces("::");
+  if (!ns.empty())
+    pxdFile.oss << " namespace \"" << ns << "\"";
+  pxdFile.oss << ":" << endl;
   pxdFile.oss << "    cdef cppclass " << pxdClassName() << " \"" << qualifiedName("::") << "\"";
   if (templateArgs.size()>0) {
     pxdFile.oss << "[";
diff --git a/wrap/Qualified.h b/wrap/Qualified.h
index b2df6f7b8..03095eb89 100644
--- a/wrap/Qualified.h
+++ b/wrap/Qualified.h
@@ -227,18 +227,12 @@ public:
 
   /// return the Cython class in pxd corresponding to a Python class in pyx
   std::string pxd_class_in_pyx() const {
-      if (isNonBasicType()) {
-        if (namespaces_.size() > 0)
-          return pxdClassName();
-        else {
-          std::cerr << "Class without namespace: " << pxdClassName() << std::endl;
-          throw std::runtime_error("Error: User type without namespace!!");
-        }
-      }
-      else if (isEigen()) {
-        return name_ + "Xd";
-      } else // basic types and not Eigen
-        return name_;
+    if (isNonBasicType()) {
+      return pxdClassName();
+    } else if (isEigen()) {
+      return name_ + "Xd";
+    } else  // basic types and not Eigen
+      return name_;
   }
 
   /// the internal Cython shared obj in a Python class wrappper