preprocessor/example/catch_builtin.cpp

/* Copyright (C) 2002
 * Housemarque Oy
 * http://www.housemarque.com
 *
 * Permission to copy, use, modify, sell and distribute this software is
 * granted provided this copyright notice appears in all copies. This
 * software is provided "as is" without express or implied warranty, and
 * with no claim as to its suitability for any purpose.
 *
 * See http://www.boost.org for most recent version.
 */

/* This example demonstrates the usage of lists and BOOST_PP_LIST_FOR_EACH(). */

#include <boost/preprocessor/list/for_each.hpp>
#include <boost/preprocessor/tuple/to_list.hpp>
#include <iostream>
#include <typeinfo>

/* List of built-in types. (Strictly speaking wchar_t should be on the list.) */
#define BUILTIN_TYPES\
  BOOST_PP_TUPLE_TO_LIST\
  ( 13\
  , ( bool\
    , char\
    , signed char\
    , unsigned char\
    , unsigned short\
    , short\
    , int\
    , unsigned\
    , long\
    , unsigned long\
    , float\
    , double\
    , long double\
    )\
  )

/* This is the macro we pass to BOOST_PP_LIST_FOR_EACH(). */
#define CATCH(R,_,T)\
  catch (T t) { std::cerr << "Caught an " << typeid(t).name() << " = " << t; }

int main()
{
  try { throw 10; }
  BOOST_PP_LIST_FOR_EACH(CATCH,_,BUILTIN_TYPES)

  return 0;
}