From 3447aaa8c67c3a648f2af72473bd2ac7c7f542df Mon Sep 17 00:00:00 2001
From: Dave Abrahams <dave@boostpro.com>
Date: Sun, 10 Mar 2002 06:32:07 +0000
Subject: [PATCH] Pointer/reference from_python callback conversions

[SVN r13158]
---
 include/boost/python/converter/callback.hpp   | 26 +++++++++++++++++++
 .../converter/callback_from_python_base.hpp   |  5 ++++
 2 files changed, 31 insertions(+)

diff --git a/include/boost/python/converter/callback.hpp b/include/boost/python/converter/callback.hpp
index 756466e3..a8fceb53 100644
--- a/include/boost/python/converter/callback.hpp
+++ b/include/boost/python/converter/callback.hpp
@@ -164,6 +164,32 @@ namespace detail
 
   BOOST_PYTHON_DECL void throw_no_class_registered();
 
+  template <class T>
+  inline reference_callback_from_python<T>::reference_callback_from_python()
+  {
+      detail::throw_if_not_registered(lvalue_from_python_chain<T,true>::value);
+  }
+  
+  template <class T>
+  inline T reference_callback_from_python<T>::operator()(PyObject* obj) const
+  {
+      return python::detail::void_ptr_to_reference(
+          callback_convert_reference(obj, lvalue_from_python_chain<T,true>::value)
+          , (T(*)())0);
+  }
+
+  template <class T>
+  inline pointer_callback_from_python<T>::pointer_callback_from_python()
+  {
+      detail::throw_if_not_registered(lvalue_from_python_chain<T,true>::value);
+  }
+  
+  template <class T>
+  inline T pointer_callback_from_python<T>::operator()(PyObject* obj) const
+  {
+      return T(callback_convert_pointer(obj, lvalue_from_python_chain<T,true>::value));
+  }
+
   template <class T>
   inline value_callback_to_python<T>::value_callback_to_python(T const& x)
       : callback_to_python_base(&x, to_python_function<T>::value)
diff --git a/include/boost/python/converter/callback_from_python_base.hpp b/include/boost/python/converter/callback_from_python_base.hpp
index 0eeccb0e..117ba145 100644
--- a/include/boost/python/converter/callback_from_python_base.hpp
+++ b/include/boost/python/converter/callback_from_python_base.hpp
@@ -10,9 +10,14 @@ namespace boost { namespace python { namespace converter {
 
 namespace detail
 {
+
   // Throw an exception
   BOOST_PYTHON_DECL void throw_if_not_registered(rvalue_stage1_data const&);
   BOOST_PYTHON_DECL void* convert_rvalue(PyObject*, rvalue_stage1_data& data, void* storage);
+  
+  BOOST_PYTHON_DECL void throw_if_not_registered(lvalue_from_python_registration*const&);
+  BOOST_PYTHON_DECL void* callback_convert_reference(PyObject*, lvalue_from_python_registration*const&);
+  BOOST_PYTHON_DECL void* callback_convert_pointer(PyObject*, lvalue_from_python_registration*const&);
 }
 
 }}} // namespace boost::python::converter