[C++-sig] new call policy - return_pointee_value

[Roman Yakovenko]

Good evening. I am working on some library that has a lot functions, that return
pointer to some fundamental type. For example:

float* get_value();

float* is actually a pointer to some instance of float and not to array.
AFAIK, today it is not possible to expose such function without creating small
wrapper. I created new call policy - return_pointee_value, that implements next
logic:

if return value is  NULL pointer:
    return None
else:
   return object( * return value )

Usage example:

namespace bpl = boost::python;
def( "get_value"
      , &get_value
      , bpl::return_value_policy< bpl::return_pointee_value >() )

Source code is attached. I think, this call policy should be added to
the library.


Thoughts?

-- 
Roman Yakovenko
C++ Python language binding
http://www.language-binding.net/
-------------- next part --------------
A non-text attachment was scrubbed...
Name: return_pointee_value.hpp
Type: text/x-c++hdr
Size: 1220 bytes
Desc: not available
URL: <http://mail.python.org/pipermail/cplusplus-sig/attachments/20061108/43437667/attachment.hpp>