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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 | // $Id$ |
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| 15 | // $Date$ |
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| 16 | // $Revision$ |
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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 | template <class T> |
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| 43 | struct print |
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| 44 | : mpl::identity<T> |
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| 45 | #if defined(__MWERKS__) |
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| 46 | , aux::print_base |
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| 47 | #endif |
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| 48 | { |
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| 49 | #if defined(__clang__) |
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| 50 | const int m_x = 1 / (sizeof(T) - sizeof(T)); |
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| 51 | #elif defined(BOOST_MSVC) |
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| 52 | enum { n = sizeof(T) + -1 }; |
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| 53 | #elif defined(__MWERKS__) |
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| 54 | void f(int); |
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| 55 | #else |
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| 56 | enum { |
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| 57 | n = |
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| 58 | # if defined(__EDG_VERSION__) |
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| 59 | aux::dependent_unsigned<T>::value > -1 |
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| 60 | # else |
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| 61 | sizeof(T) > -1 |
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| 62 | # endif |
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| 63 | }; |
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| 64 | #endif |
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| 65 | }; |
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| 66 | |
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| 67 | #if defined(BOOST_MSVC) |
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| 68 | # pragma warning(pop) |
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| 69 | #elif defined(__MWERKS__) |
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| 70 | # pragma warn_hidevirtual reset |
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| 71 | #endif |
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| 72 | |
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| 73 | }} |
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| 74 | |
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| 75 | #endif // BOOST_MPL_PRINT_HPP_INCLUDED |
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| 76 | |
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