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1 // Copyright (C) 2002 Brad King (brad.king@kitware.com) |
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2 // Douglas Gregor (gregod@cs.rpi.edu) |
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3 // Peter Dimov |
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4 // |
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5 // Distributed under the Boost Software License, Version 1.0. (See |
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6 // accompanying file LICENSE_1_0.txt or copy at |
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7 // http://www.boost.org/LICENSE_1_0.txt) |
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8 |
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9 // For more information, see http://www.boost.org |
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10 |
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11 #ifndef BOOST_UTILITY_ADDRESSOF_HPP |
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12 # define BOOST_UTILITY_ADDRESSOF_HPP |
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13 |
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14 # include <boost/config.hpp> |
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15 # include <boost/detail/workaround.hpp> |
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16 |
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17 namespace boost { |
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18 |
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19 // Do not make addressof() inline. Breaks MSVC 7. (Peter Dimov) |
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20 |
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21 // VC7 strips const from nested classes unless we add indirection here |
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22 # if BOOST_WORKAROUND(BOOST_MSVC, == 1300) |
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23 |
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24 template<class T> struct _addp |
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25 { |
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26 typedef T * type; |
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27 }; |
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28 |
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29 template <typename T> typename _addp<T>::type |
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30 |
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31 # else |
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32 template <typename T> T* |
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33 # endif |
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34 addressof(T& v) |
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35 { |
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36 return reinterpret_cast<T*>( |
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37 &const_cast<char&>(reinterpret_cast<const volatile char &>(v))); |
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38 } |
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39 |
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40 // Borland doesn't like casting an array reference to a char reference |
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41 // but these overloads work around the problem. |
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42 # if BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x564)) |
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43 template<typename T,std::size_t N> |
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44 T (*addressof(T (&t)[N]))[N] |
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45 { |
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46 return reinterpret_cast<T(*)[N]>(&t); |
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47 } |
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48 |
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49 template<typename T,std::size_t N> |
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50 const T (*addressof(const T (&t)[N]))[N] |
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51 { |
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52 return reinterpret_cast<const T(*)[N]>(&t); |
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53 } |
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54 # endif |
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55 |
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56 } |
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57 |
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58 #endif // BOOST_UTILITY_ADDRESSOF_HPP |