Move EmptyPythonVisitor to its own header file

Author: ManifoldFR

CMakeLists.txt

@@ -170,9 +170,12 @@ endif(BUILD_WITH_ACCELERATE_SUPPORT)
 # --- INCLUDE ----------------------------------------
 # ----------------------------------------------------
 set(${PROJECT_NAME}_UTILS_HEADERS
-    include/eigenpy/utils/scalar-name.hpp include/eigenpy/utils/is-approx.hpp
-    include/eigenpy/utils/is-aligned.hpp include/eigenpy/utils/traits.hpp
-    include/eigenpy/utils/python-compat.hpp)
+    include/eigenpy/utils/scalar-name.hpp
+    include/eigenpy/utils/is-approx.hpp
+    include/eigenpy/utils/is-aligned.hpp
+    include/eigenpy/utils/traits.hpp
+    include/eigenpy/utils/python-compat.hpp
+    include/eigenpy/utils/empty-visitor.hpp)
 
 set(${PROJECT_NAME}_SOLVERS_HEADERS
     include/eigenpy/solvers/solvers.hpp
@@ -250,6 +253,7 @@ set(${PROJECT_NAME}_HEADERS
     include/eigenpy/numpy-map.hpp
     include/eigenpy/geometry.hpp
     include/eigenpy/geometry-conversion.hpp
+    include/eigenpy/map.hpp
     include/eigenpy/memory.hpp
     include/eigenpy/numpy.hpp
     include/eigenpy/numpy-allocator.hpp

include/eigenpy/std-vector.hpp

@@ -21,6 +21,7 @@
 #include "eigenpy/eigen-to-python.hpp"
 #include "eigenpy/pickle-vector.hpp"
 #include "eigenpy/registration.hpp"
+#include "eigenpy/utils/empty-visitor.hpp"
 
 namespace eigenpy {
 // Forward declaration
@@ -396,12 +397,6 @@ createExposeStdMethodToStdVector(const CoVisitor &co_visitor) {
 
 }  // namespace internal
 
-struct EmptyPythonVisitor
-    : public ::boost::python::def_visitor<EmptyPythonVisitor> {
-  template <class classT>
-  void visit(classT &) const {}
-};
-
 namespace internal {
 template <typename vector_type, bool T_picklable = false>
 struct def_pickle_std_vector {

include/eigenpy/utils/empty-visitor.hpp

@@ -0,0 +1,11 @@
+#include "eigenpy/fwd.hpp"
+
+namespace eigenpy {
+
+struct EmptyPythonVisitor
+    : public ::boost::python::def_visitor<EmptyPythonVisitor> {
+  template <class classT>
+  void visit(classT &) const {}
+};
+
+}  // namespace eigenpy