1 2 #ifndef BOOST_MPL_PRINT_HPP_INCLUDED 3 #define BOOST_MPL_PRINT_HPP_INCLUDED 4 5 // Copyright David Abrahams 2003 6 // Copyright Aleksey Gurtovoy 2004 7 // 8 // Distributed under the Boost Software License, Version 1.0. 9 // (See accompanying file LICENSE_1_0.txt or copy at 10 // http://www.boost.org/LICENSE_1_0.txt) 11 // 12 // See http://www.boost.org/libs/mpl for documentation. 13 14 // $Source: /local/cvs/lamarc/boost/mpl/print.hpp,v $ 15 // $Date: 2006/03/20 20:14:45 $ 16 // $Revision: 1.1.1.1 $ 17 18 #include <boost/mpl/aux_/config/msvc.hpp> 19 #include <boost/mpl/identity.hpp> 20 21 namespace boost { namespace mpl { 22 23 namespace aux { 24 #if defined(BOOST_MSVC) 25 # pragma warning(push, 3) 26 // we only want one warning from MSVC, so turn off the other one 27 # pragma warning(disable: 4307) 28 #elif defined(__MWERKS__) 29 # pragma warn_hidevirtual on 30 struct print_base { virtual void f() {} }; 31 #endif 32 33 #if defined(__EDG_VERSION__) 34 template <class T> 35 struct dependent_unsigned 36 { 37 static const unsigned value = 1; 38 }; 39 #endif 40 } // namespace aux 41 42 43 template <class T> 44 struct print 45 : mpl::identity<T> 46 #if defined(__MWERKS__) 47 , aux::print_base 48 #endif 49 { 50 #if defined(BOOST_MSVC) 51 enum { n = sizeof(T) + -1 }; 52 #elif defined(__MWERKS__) 53 void f(int); 54 #else 55 enum { 56 n = 57 # if defined(__EDG_VERSION__) 58 aux::dependent_unsigned<T>::value > -1 59 # else 60 sizeof(T) > -1, 61 # endif 62 }; 63 #endif 64 }; 65 66 #if defined(BOOST_MSVC) 67 # pragma warning(pop) 68 #elif defined(__MWERKS__) 69 # pragma warn_hidevirtual reset 70 #endif 71 72 }} 73 74 #endif // BOOST_MPL_PRINT_HPP_INCLUDED 75