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| 2 | #ifndef BOOST_MPL_PRINT_HPP_INCLUDED
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| 3 | #define BOOST_MPL_PRINT_HPP_INCLUDED
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| 4 |
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| 5 | // Copyright David Abrahams 2003
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| 6 | // Copyright Aleksey Gurtovoy 2004
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| 7 | //
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| 8 | // Distributed under the Boost Software License, Version 1.0.
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| 9 | // (See accompanying file LICENSE_1_0.txt or copy at
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| 10 | // http://www.boost.org/LICENSE_1_0.txt)
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| 11 | //
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| 12 | // See http://www.boost.org/libs/mpl for documentation.
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| 13 |
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| 14 | // $Id: print.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
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| 15 | // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
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| 16 | // $Revision: 49267 $
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| 17 |
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| 18 | #include <boost/mpl/aux_/config/msvc.hpp>
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| 19 | #include <boost/mpl/identity.hpp>
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| 20 |
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| 21 | namespace boost { namespace mpl {
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| 22 |
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| 23 | namespace aux {
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| 24 | #if defined(BOOST_MSVC)
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| 25 | # pragma warning(push, 3)
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| 26 | // we only want one warning from MSVC, so turn off the other one
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| 27 | # pragma warning(disable: 4307)
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| 28 | #elif defined(__MWERKS__)
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| 29 | # pragma warn_hidevirtual on
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| 30 | struct print_base { virtual void f() {} };
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| 31 | #endif
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| 32 |
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| 33 | #if defined(__EDG_VERSION__)
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| 34 | template <class T>
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| 35 | struct dependent_unsigned
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| 36 | {
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| 37 | static const unsigned value = 1;
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| 38 | };
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| 39 | #endif
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| 40 | } // namespace aux
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| 41 |
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| 42 |
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| 43 | template <class T>
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| 44 | struct print
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| 45 | : mpl::identity<T>
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| 46 | #if defined(__MWERKS__)
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| 47 | , aux::print_base
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| 48 | #endif
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| 49 | {
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| 50 | #if defined(BOOST_MSVC)
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| 51 | enum { n = sizeof(T) + -1 };
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| 52 | #elif defined(__MWERKS__)
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| 53 | void f(int);
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| 54 | #else
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| 55 | enum {
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| 56 | n =
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| 57 | # if defined(__EDG_VERSION__)
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| 58 | aux::dependent_unsigned<T>::value > -1
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| 59 | # else
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| 60 | sizeof(T) >= 0
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| 61 | # endif
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| 62 | };
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| 63 | #endif
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| 64 | };
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| 65 |
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| 66 | #if defined(BOOST_MSVC)
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| 67 | # pragma warning(pop)
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| 68 | #elif defined(__MWERKS__)
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| 69 | # pragma warn_hidevirtual reset
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| 70 | #endif
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| 71 |
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| 72 | }}
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| 73 |
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| 74 | #endif // BOOST_MPL_PRINT_HPP_INCLUDED
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