add -nortti option in python, to avoid using RTTI, mainly with directors

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@6999 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Lib/python/director_h.swg

@@ -13,15 +13,33 @@
 
 #include <string>
 
-extern "C" {
-  struct swig_type_info;
-}
-
+/*
+  Use -DSWIG_DIRECTOR_STATIC if you prefer to avoid the use of the
+  'Swig' namespace. This could be usefull for multi-modules projects.
+*/
 #ifdef SWIG_DIRECTOR_STATIC
 /* Force anonymous (static) namespace */
 #define Swig
 #endif
 
+
+/*
+  Use -DSWIG_DIRECTOR_NORTTI if you prefer to avoid the use of RTTI
+  and dynamic_cast<>. But be aware that directors could stop working
+  when using this option.
+*/
+
+#if defined(SWIG_DIRECTOR_NORTTI) 
+#  define SWIG_DIRECTOR_CAST(arg) (Swig::Director*)(arg)
+#else
+#  define SWIG_DIRECTOR_CAST(arg) dynamic_cast<Swig::Director*>(arg)
+#endif
+
+
+extern "C" {
+  struct swig_type_info;
+}
+
 namespace Swig {
   /* base class for director exceptions */
   class DirectorException {

Lib/python/pyuserdir.swg

@@ -122,3 +122,12 @@ These methods "may be called" if needed.
 #endif
 #define %nocallback %nopythoncallback; %feature("callback","")
 
+
+/* When using -nortti, tell directors to avoid RTTI */
+#ifdef SWIG_NORTTI
+%insert("runtime") %{
+#ifndef SWIG_DIRECTOR_NORTTI
+#define SWIG_DIRECTOR_NORTTI
+#endif
+%}
+#endif