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65 lines
1.2 KiB
C++
Executable File
65 lines
1.2 KiB
C++
Executable File
// Copyright David Abrahams 2003. Use, modification and distribution is
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// subject to the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef PRINT_DWA20031231_HPP
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# define PRINT_DWA20031231_HPP
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#include <boost/mpl/identity.hpp>
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namespace boost { namespace mpl
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{
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namespace aux
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{
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#if BOOST_MSVC
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# pragma warning(push, 3)
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// we only want one warning from MSVC, so turn off the other one
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# pragma warning(disable: 4307)
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#elif __MWERKS__
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# pragma warn_hidevirtual on
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struct print_base { virtual void f() {} };
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#endif
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#if __EDG_VERSION__
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template <class T>
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struct dependent_unsigned
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{
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static const unsigned value = 1;
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};
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#endif
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}
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template <class T>
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struct print
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: mpl::identity<T>
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#if __MWERKS__
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, aux::print_base
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#endif
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{
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#if BOOST_MSVC
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enum { n = sizeof(T) + -1 };
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#elif __MWERKS__
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void f(int);
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#else
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enum {
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n =
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# if __EDG_VERSION__
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aux::dependent_unsigned<T>::value
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# else
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sizeof(T)
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# endif
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> -1, };
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#endif
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};
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}} // namespace boost::mpl
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#if BOOST_MSVC
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# pragma warning(pop)
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#elif __MWERKS__
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# pragma warn_hidevirtual reset
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#endif
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#endif // PRINT_DWA20031231_HPP
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