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119 lines
6.6 KiB
C++
119 lines
6.6 KiB
C++
// Boost.Range library
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//
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// Copyright Thorsten Ottosen 2003-2004. Use, modification and
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// distribution is subject to the Boost Software License, Version
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// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// For more information, see http://www.boost.org/libs/range/
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//
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#ifndef BOOST_RANGE_DETAIL_COMMON_HPP
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#define BOOST_RANGE_DETAIL_COMMON_HPP
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#if defined(_MSC_VER)
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# pragma once
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#endif
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#include <boost/range/config.hpp>
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#include <boost/range/detail/sfinae.hpp>
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#include <boost/type_traits/is_void.hpp>
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#include <boost/mpl/bool.hpp>
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#include <boost/mpl/if.hpp>
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#include <boost/mpl/int.hpp>
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#include <boost/mpl/or.hpp>
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#include <cstddef>
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//////////////////////////////////////////////////////////////////////////////
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// missing partial specialization workaround.
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//////////////////////////////////////////////////////////////////////////////
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namespace boost
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{
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namespace range_detail
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{
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// 1 = std containers
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// 2 = std::pair
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// 3 = const std::pair
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// 4 = array
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// 5 = const array
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// 6 = char array
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// 7 = wchar_t array
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// 8 = char*
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// 9 = const char*
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// 10 = whar_t*
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// 11 = const wchar_t*
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// 12 = string
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typedef mpl::int_<1>::type std_container_;
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typedef mpl::int_<2>::type std_pair_;
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typedef mpl::int_<3>::type const_std_pair_;
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typedef mpl::int_<4>::type array_;
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typedef mpl::int_<5>::type const_array_;
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typedef mpl::int_<6>::type char_array_;
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typedef mpl::int_<7>::type wchar_t_array_;
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typedef mpl::int_<8>::type char_ptr_;
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typedef mpl::int_<9>::type const_char_ptr_;
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typedef mpl::int_<10>::type wchar_t_ptr_;
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typedef mpl::int_<11>::type const_wchar_t_ptr_;
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typedef mpl::int_<12>::type string_;
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template< typename C >
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struct range_helper
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{
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static C* c;
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static C ptr;
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BOOST_STATIC_CONSTANT( bool, is_pair_ = sizeof( boost::range_detail::is_pair_impl( c ) ) == sizeof( yes_type ) );
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BOOST_STATIC_CONSTANT( bool, is_char_ptr_ = sizeof( boost::range_detail::is_char_ptr_impl( ptr ) ) == sizeof( yes_type ) );
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BOOST_STATIC_CONSTANT( bool, is_const_char_ptr_ = sizeof( boost::range_detail::is_const_char_ptr_impl( ptr ) ) == sizeof( yes_type ) );
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BOOST_STATIC_CONSTANT( bool, is_wchar_t_ptr_ = sizeof( boost::range_detail::is_wchar_t_ptr_impl( ptr ) ) == sizeof( yes_type ) );
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BOOST_STATIC_CONSTANT( bool, is_const_wchar_t_ptr_ = sizeof( boost::range_detail::is_const_wchar_t_ptr_impl( ptr ) ) == sizeof( yes_type ) );
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BOOST_STATIC_CONSTANT( bool, is_char_array_ = sizeof( boost::range_detail::is_char_array_impl( ptr ) ) == sizeof( yes_type ) );
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BOOST_STATIC_CONSTANT( bool, is_wchar_t_array_ = sizeof( boost::range_detail::is_wchar_t_array_impl( ptr ) ) == sizeof( yes_type ) );
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BOOST_STATIC_CONSTANT( bool, is_string_ = (boost::mpl::or_<boost::mpl::bool_<is_const_char_ptr_>, boost::mpl::bool_<is_const_wchar_t_ptr_> >::value ));
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BOOST_STATIC_CONSTANT( bool, is_array_ = boost::is_array<C>::value );
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};
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template< typename C >
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class range
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{
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typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_pair_,
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boost::range_detail::std_pair_,
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void >::type pair_t;
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typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_array_,
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boost::range_detail::array_,
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pair_t >::type array_t;
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typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_string_,
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boost::range_detail::string_,
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array_t >::type string_t;
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typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_const_char_ptr_,
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boost::range_detail::const_char_ptr_,
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string_t >::type const_char_ptr_t;
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typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_char_ptr_,
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boost::range_detail::char_ptr_,
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const_char_ptr_t >::type char_ptr_t;
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typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_const_wchar_t_ptr_,
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boost::range_detail::const_wchar_t_ptr_,
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char_ptr_t >::type const_wchar_ptr_t;
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typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_wchar_t_ptr_,
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boost::range_detail::wchar_t_ptr_,
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const_wchar_ptr_t >::type wchar_ptr_t;
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typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_wchar_t_array_,
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boost::range_detail::wchar_t_array_,
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wchar_ptr_t >::type wchar_array_t;
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typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::range_detail::range_helper<C>::is_char_array_,
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boost::range_detail::char_array_,
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wchar_array_t >::type char_array_t;
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public:
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typedef BOOST_RANGE_DEDUCED_TYPENAME boost::mpl::if_c< ::boost::is_void<char_array_t>::value,
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boost::range_detail::std_container_,
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char_array_t >::type type;
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}; // class 'range'
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}
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}
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#endif
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