boost/range/detail/remove_extent.hpp
// Boost.Range library // // Copyright Jonathan Turkanis 2005. Use, modification and // distribution is subject to the Boost Software License, Version // 1.0. (See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt) // // For more information, see http://www.boost.org/libs/range/ // #ifndef BOOST_RANGE_DETAIL_REMOVE_BOUNDS_HPP #define BOOST_RANGE_DETAIL_REMOVE_BOUNDS_HPP #include <boost/config.hpp> // MSVC, NO_INTRINSIC_WCHAR_T, put size_t in std. #include <cstddef> #include <boost/mpl/eval_if.hpp> #include <boost/mpl/identity.hpp> #include <boost/type_traits/is_same.hpp> namespace boost { namespace range_detail { template< typename Case1 = mpl::true_, typename Type1 = mpl::void_, typename Case2 = mpl::true_, typename Type2 = mpl::void_, typename Case3 = mpl::true_, typename Type3 = mpl::void_, typename Case4 = mpl::true_, typename Type4 = mpl::void_, typename Case5 = mpl::true_, typename Type5 = mpl::void_, typename Case6 = mpl::true_, typename Type6 = mpl::void_, typename Case7 = mpl::true_, typename Type7 = mpl::void_, typename Case8 = mpl::true_, typename Type8 = mpl::void_, typename Case9 = mpl::true_, typename Type9 = mpl::void_, typename Case10 = mpl::true_, typename Type10 = mpl::void_, typename Case11 = mpl::true_, typename Type11 = mpl::void_, typename Case12 = mpl::true_, typename Type12 = mpl::void_, typename Case13 = mpl::true_, typename Type13 = mpl::void_, typename Case14 = mpl::true_, typename Type14 = mpl::void_, typename Case15 = mpl::true_, typename Type15 = mpl::void_, typename Case16 = mpl::true_, typename Type16 = mpl::void_, typename Case17 = mpl::true_, typename Type17 = mpl::void_, typename Case18 = mpl::true_, typename Type18 = mpl::void_, typename Case19 = mpl::true_, typename Type19 = mpl::void_, typename Case20 = mpl::true_, typename Type20 = mpl::void_> struct select { typedef typename mpl::eval_if< Case1, mpl::identity<Type1>, mpl::eval_if< Case2, mpl::identity<Type2>, mpl::eval_if< Case3, mpl::identity<Type3>, mpl::eval_if< Case4, mpl::identity<Type4>, mpl::eval_if< Case5, mpl::identity<Type5>, mpl::eval_if< Case6, mpl::identity<Type6>, mpl::eval_if< Case7, mpl::identity<Type7>, mpl::eval_if< Case8, mpl::identity<Type8>, mpl::eval_if< Case9, mpl::identity<Type9>, mpl::if_< Case10, Type10, mpl::void_ > > > > > > > > > >::type result1; typedef typename mpl::eval_if< Case11, mpl::identity<Type11>, mpl::eval_if< Case12, mpl::identity<Type12>, mpl::eval_if< Case13, mpl::identity<Type13>, mpl::eval_if< Case14, mpl::identity<Type14>, mpl::eval_if< Case15, mpl::identity<Type15>, mpl::eval_if< Case16, mpl::identity<Type16>, mpl::eval_if< Case17, mpl::identity<Type17>, mpl::eval_if< Case18, mpl::identity<Type18>, mpl::eval_if< Case19, mpl::identity<Type19>, mpl::if_< Case20, Type20, mpl::void_ > > > > > > > > > > result2; typedef typename mpl::eval_if< is_same<result1, mpl::void_>, result2, mpl::identity<result1> >::type type; }; template<typename T> struct remove_extent { static T* ar; BOOST_STATIC_CONSTANT(std::size_t, size = sizeof(*ar) / sizeof((*ar)[0])); typedef typename select< is_same<T, bool[size]>, bool, is_same<T, char[size]>, char, is_same<T, signed char[size]>, signed char, is_same<T, unsigned char[size]>, unsigned char, #ifndef BOOST_NO_INTRINSIC_WCHAR_T is_same<T, wchar_t[size]>, wchar_t, #endif is_same<T, short[size]>, short, is_same<T, unsigned short[size]>, unsigned short, is_same<T, int[size]>, int, is_same<T, unsigned int[size]>, unsigned int, is_same<T, long[size]>, long, is_same<T, unsigned long[size]>, unsigned long, is_same<T, float[size]>, float, is_same<T, double[size]>, double, is_same<T, long double[size]>, long double >::type result1; typedef typename select< is_same<T, const bool[size]>, const bool, is_same<T, const char[size]>, const char, is_same<T, const signed char[size]>, const signed char, is_same<T, const unsigned char[size]>, const unsigned char, #ifndef BOOST_NO_INTRINSIC_WCHAR_T is_same<T, const wchar_t[size]>, const wchar_t, #endif is_same<T, const short[size]>, const short, is_same<T, const unsigned short[size]>, const unsigned short, is_same<T, const int[size]>, const int, is_same<T, const unsigned int[size]>, const unsigned int, is_same<T, const long[size]>, const long, is_same<T, const unsigned long[size]>, const unsigned long, is_same<T, const float[size]>, const float, is_same<T, const double[size]>, const double, is_same<T, const long double[size]>, const long double > result2; typedef typename mpl::eval_if< is_same<result1, mpl::void_>, result2, mpl::identity<result1> >::type type; }; } // namespace 'range_detail' } // namespace 'boost' #endif