boost_1_45_0/libs/mpi/src/python/exception.cpp

// Copyright (C) 2006 Douglas Gregor <doug.gregor -at- gmail.com>
// Copyright (C) 2005 The Trustees of Indiana University.

// Use, modification and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)

//  Authors: Douglas Gregor

/** @file exception.cpp
 *
 *  This file reflects the Boost.MPI @c mpi_error class into
 *  Python.
 */
#include <boost/python.hpp>
#include <boost/mpi/exception.hpp>
#include <string>
#include <boost/lexical_cast.hpp>
#include "utility.hpp"

using namespace boost::python;
using namespace boost::mpi;

namespace boost { namespace mpi { namespace python {

extern const char* exception_docstring;
extern const char* exception_what_docstring;
extern const char* exception_routine_docstring;
extern const char* exception_result_code_docstring;

str exception_str(const exception& e)
{
  return str("MPI routine `"  + std::string(e.routine()) + 
             "' returned error code " + 
             lexical_cast<std::string>(e.result_code()));
}

void export_exception()
{
  using boost::python::arg;
  using boost::python::object;
  
  object type = 
    class_<exception>
      ("exception", exception_docstring, no_init)
      .add_property("what", &exception::what, exception_what_docstring)
      .add_property("routine", &exception::what, exception_routine_docstring)
      .add_property("result_code", &exception::what, 
                    exception_result_code_docstring)
      .def("__str__", &exception_str)
    ;
  translate_exception<exception>::declare(type);
}

} } } // end namespace boost::mpi::python