[Sofa.Core.Node]: Improve deprecation message when using getobject. (#199)

* [bindings/Core] Improve the deprecation message for Node::getObject()

* [Sofa.Core] Improve the deprecation message for Node::getObject()

Author: damienmarchal

Plugin/src/SofaPython3/PythonFactory.cpp

@@ -346,11 +346,16 @@ void PythonFactory::fromPython(BaseData* d, const py::object& o)
     // To smooth the deprecation process we are still allowing it ...but prints a warning.
     if( !nfo.Text() && py::isinstance<py::str>(o) )
     {
-        msg_deprecated(d->getOwner()) << "Data field '" << d->getName() << "' is initialized from a string."
-                                      << " This behavior was allowed with SofaPython2 but have very poor performance so it is now "
-                                      << "deprecated with SofaPython3. Please fix your scene (as this behavior will be removed)."
-                                      << PythonEnvironment::getPythonCallingPointString();
-        d->read( py::cast<std::string>(o) );
+        std::string s = py::cast<std::string>(o);
+        if(s.size() > 1 && s[0] != '@')
+        {
+            msg_deprecated(d->getOwner()) << "Data field '" << d->getName() << "' is initialized from a string." << msgendl
+                                          << " This behavior was allowed with SofaPython2 but have very poor performance so it is now  "
+                                              << "deprecated with SofaPython3. Please fix your scene (as this behavior will be removed)." << msgendl
+                                          << msgendl
+                                          << PythonEnvironment::getPythonCallingPointString();
+        }
+        d->read( s );
         return;
     }
 

bindings/Sofa/src/SofaPython3/Sofa/Core/Binding_Node.cpp

@@ -172,7 +172,9 @@ py::object getObject(Node &n, const std::string &name, const py::kwargs& kwargs)
     if(kwargs.size()!=0)
     {
         msg_deprecated(&n) << "Calling the method getObject() with extra arguments is not supported anymore."
-                           << "To remove this message please refer to the documentation of the getObject method";
+                           << "To remove this message please refer to the documentation of the getObject method"
+                           << msgendl
+                            << PythonEnvironment::getPythonCallingPointString() ;
     }
 
     BaseObject *object = n.getObject(name);