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author | Stefan Radomski <github@mintwerk.de> | 2016-05-12 13:12:33 (GMT) |
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committer | Stefan Radomski <github@mintwerk.de> | 2016-05-12 13:12:33 (GMT) |
commit | b62e7979600feee23dc7cdb61042a8fc7673122b (patch) | |
tree | f7351372f37979dd2d048e0b68a16a4cd3b2aadb /contrib/src/boost/mpl/aux_/msvc_is_class.hpp | |
parent | 1b11b310be61e51b3ac5ebb83f7c8a33aef3d6e8 (diff) | |
download | uscxml-b62e7979600feee23dc7cdb61042a8fc7673122b.zip uscxml-b62e7979600feee23dc7cdb61042a8fc7673122b.tar.gz uscxml-b62e7979600feee23dc7cdb61042a8fc7673122b.tar.bz2 |
Major Refactoring v2.0
Diffstat (limited to 'contrib/src/boost/mpl/aux_/msvc_is_class.hpp')
-rw-r--r-- | contrib/src/boost/mpl/aux_/msvc_is_class.hpp | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/contrib/src/boost/mpl/aux_/msvc_is_class.hpp b/contrib/src/boost/mpl/aux_/msvc_is_class.hpp new file mode 100644 index 0000000..acd40e3 --- /dev/null +++ b/contrib/src/boost/mpl/aux_/msvc_is_class.hpp @@ -0,0 +1,58 @@ + +#ifndef BOOST_MPL_AUX_MSVC_IS_CLASS_HPP_INCLUDED +#define BOOST_MPL_AUX_MSVC_IS_CLASS_HPP_INCLUDED + +// Copyright Aleksey Gurtovoy 2002-2004 +// +// Distributed under 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) +// +// See http://www.boost.org/libs/mpl for documentation. + +// $Id$ +// $Date$ +// $Revision$ + +#include <boost/mpl/if.hpp> +#include <boost/mpl/bool.hpp> +#include <boost/mpl/aux_/type_wrapper.hpp> +#include <boost/mpl/aux_/yes_no.hpp> + +#include <boost/type_traits/is_reference.hpp> + +namespace boost { namespace mpl { namespace aux { + +template< typename T > struct is_class_helper +{ + typedef int (T::* type)(); +}; + +// MSVC 6.x-specific lightweight 'is_class' implementation; +// Distinguishing feature: does not instantiate the type being tested. +template< typename T > +struct msvc_is_class_impl +{ + template< typename U> + static yes_tag test(type_wrapper<U>*, /*typename*/ is_class_helper<U>::type = 0); + static no_tag test(void const volatile*, ...); + + enum { value = sizeof(test((type_wrapper<T>*)0)) == sizeof(yes_tag) }; + typedef bool_<value> type; +}; + +// agurt, 17/sep/04: have to check for 'is_reference' upfront to avoid ICEs in +// complex metaprograms +template< typename T > +struct msvc_is_class + : if_< + is_reference<T> + , false_ + , msvc_is_class_impl<T> + >::type +{ +}; + +}}} + +#endif // BOOST_MPL_AUX_MSVC_IS_CLASS_HPP_INCLUDED |