annotate DEPENDENCIES/generic/include/boost/smart_ptr/detail/sp_convertible.hpp @ 125:34e428693f5d vext

Vext -> Repoint
author Chris Cannam
date Thu, 14 Jun 2018 11:15:39 +0100
parents c530137014c0
children
rev   line source
Chris@16 1 #ifndef BOOST_SMART_PTR_DETAIL_SP_CONVERTIBLE_HPP_INCLUDED
Chris@16 2 #define BOOST_SMART_PTR_DETAIL_SP_CONVERTIBLE_HPP_INCLUDED
Chris@16 3
Chris@16 4 // MS compatible compilers support #pragma once
Chris@16 5
Chris@16 6 #if defined(_MSC_VER) && (_MSC_VER >= 1020)
Chris@16 7 # pragma once
Chris@16 8 #endif
Chris@16 9
Chris@16 10 // detail/sp_convertible.hpp
Chris@16 11 //
Chris@16 12 // Copyright 2008 Peter Dimov
Chris@16 13 //
Chris@16 14 // Distributed under the Boost Software License, Version 1.0.
Chris@16 15 // See accompanying file LICENSE_1_0.txt or copy at
Chris@16 16 // http://www.boost.org/LICENSE_1_0.txt
Chris@16 17
Chris@16 18 #include <boost/config.hpp>
Chris@101 19 #include <cstddef>
Chris@16 20
Chris@16 21 #if !defined( BOOST_SP_NO_SP_CONVERTIBLE ) && defined( BOOST_NO_SFINAE )
Chris@16 22 # define BOOST_SP_NO_SP_CONVERTIBLE
Chris@16 23 #endif
Chris@16 24
Chris@16 25 #if !defined( BOOST_SP_NO_SP_CONVERTIBLE ) && defined( __GNUC__ ) && ( __GNUC__ * 100 + __GNUC_MINOR__ < 303 )
Chris@16 26 # define BOOST_SP_NO_SP_CONVERTIBLE
Chris@16 27 #endif
Chris@16 28
Chris@16 29 #if !defined( BOOST_SP_NO_SP_CONVERTIBLE ) && defined( __BORLANDC__ ) && ( __BORLANDC__ < 0x630 )
Chris@16 30 # define BOOST_SP_NO_SP_CONVERTIBLE
Chris@16 31 #endif
Chris@16 32
Chris@16 33 #if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
Chris@16 34
Chris@16 35 namespace boost
Chris@16 36 {
Chris@16 37
Chris@16 38 namespace detail
Chris@16 39 {
Chris@16 40
Chris@16 41 template< class Y, class T > struct sp_convertible
Chris@16 42 {
Chris@16 43 typedef char (&yes) [1];
Chris@16 44 typedef char (&no) [2];
Chris@16 45
Chris@16 46 static yes f( T* );
Chris@16 47 static no f( ... );
Chris@16 48
Chris@16 49 enum _vt { value = sizeof( (f)( static_cast<Y*>(0) ) ) == sizeof(yes) };
Chris@16 50 };
Chris@16 51
Chris@16 52 template< class Y, class T > struct sp_convertible< Y, T[] >
Chris@16 53 {
Chris@16 54 enum _vt { value = false };
Chris@16 55 };
Chris@16 56
Chris@16 57 template< class Y, class T > struct sp_convertible< Y[], T[] >
Chris@16 58 {
Chris@16 59 enum _vt { value = sp_convertible< Y[1], T[1] >::value };
Chris@16 60 };
Chris@16 61
Chris@16 62 template< class Y, std::size_t N, class T > struct sp_convertible< Y[N], T[] >
Chris@16 63 {
Chris@16 64 enum _vt { value = sp_convertible< Y[1], T[1] >::value };
Chris@16 65 };
Chris@16 66
Chris@16 67 struct sp_empty
Chris@16 68 {
Chris@16 69 };
Chris@16 70
Chris@16 71 template< bool > struct sp_enable_if_convertible_impl;
Chris@16 72
Chris@16 73 template<> struct sp_enable_if_convertible_impl<true>
Chris@16 74 {
Chris@16 75 typedef sp_empty type;
Chris@16 76 };
Chris@16 77
Chris@16 78 template<> struct sp_enable_if_convertible_impl<false>
Chris@16 79 {
Chris@16 80 };
Chris@16 81
Chris@16 82 template< class Y, class T > struct sp_enable_if_convertible: public sp_enable_if_convertible_impl< sp_convertible< Y, T >::value >
Chris@16 83 {
Chris@16 84 };
Chris@16 85
Chris@16 86 } // namespace detail
Chris@16 87
Chris@16 88 } // namespace boost
Chris@16 89
Chris@16 90 #endif // !defined( BOOST_SP_NO_SP_CONVERTIBLE )
Chris@16 91
Chris@16 92 #endif // #ifndef BOOST_SMART_PTR_DETAIL_SP_CONVERTIBLE_HPP_INCLUDED