1 |
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2 | // (C) Copyright Steve Cleary, Beman Dawes, Howard Hinnant & John Maddock 2000.
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3 | // Use, modification and distribution are subject to the Boost Software License,
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4 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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5 | // http://www.boost.org/LICENSE_1_0.txt).
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6 | //
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7 | // See http://www.boost.org/libs/type_traits for most recent version including documentation.
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8 |
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9 | #ifndef BOOST_TT_ADD_POINTER_HPP_INCLUDED
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10 | #define BOOST_TT_ADD_POINTER_HPP_INCLUDED
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11 |
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12 | #include "boost/type_traits/remove_reference.hpp"
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13 |
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14 | // should be the last #include
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15 | #include "boost/type_traits/detail/type_trait_def.hpp"
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16 |
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17 | namespace boost {
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18 |
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19 | namespace detail {
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20 |
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21 | #if defined(__BORLANDC__) && (__BORLANDC__ < 0x600)
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22 | //
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23 | // For some reason this implementation stops Borlands compiler
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24 | // from dropping cv-qualifiers, it still fails with references
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25 | // to arrays for some reason though (shrug...) (JM 20021104)
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26 | //
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27 | template <typename T>
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28 | struct add_pointer_impl
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29 | {
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30 | typedef T* type;
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31 | };
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32 | template <typename T>
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33 | struct add_pointer_impl<T&>
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34 | {
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35 | typedef T* type;
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36 | };
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37 | template <typename T>
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38 | struct add_pointer_impl<T&const>
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39 | {
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40 | typedef T* type;
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41 | };
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42 | template <typename T>
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43 | struct add_pointer_impl<T&volatile>
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44 | {
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45 | typedef T* type;
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46 | };
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47 | template <typename T>
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48 | struct add_pointer_impl<T&const volatile>
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49 | {
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50 | typedef T* type;
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51 | };
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52 |
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53 | #else
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54 |
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55 | template <typename T>
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56 | struct add_pointer_impl
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57 | {
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58 | typedef typename remove_reference<T>::type no_ref_type;
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59 | typedef no_ref_type* type;
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60 | };
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61 |
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62 | #endif
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63 |
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64 | } // namespace detail
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65 |
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66 | BOOST_TT_AUX_TYPE_TRAIT_DEF1(add_pointer,T,typename detail::add_pointer_impl<T>::type)
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67 |
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68 | } // namespace boost
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69 |
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70 | #include "boost/type_traits/detail/type_trait_undef.hpp"
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71 |
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72 | #endif // BOOST_TT_ADD_POINTER_HPP_INCLUDED
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