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1 |
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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 // $Source: /cvsroot/boost/boost/boost/mpl/print.hpp,v $ |
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15 // $Date: 2006/11/10 23:15:49 $ |
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16 // $Revision: 1.2.14.1 $ |
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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) > -1 |
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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 |