blob: aad30f25412e59c7e1e745236dda4a3bebc492b5 [file] [log] [blame]
// (C) Copyright Dave Abrahams, Steve Cleary, Beman Dawes,
// Howard Hinnant and John Maddock 2000.
// (C) Copyright Mat Marcus, Jesse Jones and Adobe Systems Inc 2001
// Use, modification and distribution are 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).
//
// See http://www.boost.org/libs/type_traits for most recent version including documentation.
// Fixed is_pointer, is_reference, is_const, is_volatile, is_same,
// is_member_pointer based on the Simulated Partial Specialization work
// of Mat Marcus and Jesse Jones. See http://opensource.adobe.com or
// http://groups.yahoo.com/group/boost/message/5441
// Some workarounds in here use ideas suggested from "Generic<Programming>:
// Mappings between Types and Values"
// by Andrei Alexandrescu (see http://www.cuj.com/experts/1810/alexandr.html).
#ifndef BOOST_TT_IS_POINTER_HPP_INCLUDED
#define BOOST_TT_IS_POINTER_HPP_INCLUDED
#include <boost/type_traits/is_member_pointer.hpp>
#include <boost/type_traits/detail/ice_and.hpp>
#include <boost/type_traits/detail/ice_not.hpp>
#include <boost/type_traits/config.hpp>
#include <boost/type_traits/remove_cv.hpp>
// should be the last #include
#include <boost/type_traits/detail/bool_trait_def.hpp>
namespace boost {
#if defined( __CODEGEARC__ )
BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_pointer,T,__is_pointer(T))
#else
namespace detail {
template< typename T > struct is_pointer_helper
{
BOOST_STATIC_CONSTANT(bool, value = false);
};
# define TT_AUX_BOOL_TRAIT_HELPER_PARTIAL_SPEC(helper,sp,result) \
template< typename T > struct helper<sp> \
{ \
BOOST_STATIC_CONSTANT(bool, value = result); \
}; \
/**/
TT_AUX_BOOL_TRAIT_HELPER_PARTIAL_SPEC(is_pointer_helper,T*,true)
# undef TT_AUX_BOOL_TRAIT_HELPER_PARTIAL_SPEC
template< typename T >
struct is_pointer_impl
{
BOOST_STATIC_CONSTANT(bool, value =
(::boost::type_traits::ice_and<
::boost::detail::is_pointer_helper<typename remove_cv<T>::type>::value
, ::boost::type_traits::ice_not<
::boost::is_member_pointer<T>::value
>::value
>::value)
);
};
} // namespace detail
BOOST_TT_AUX_BOOL_TRAIT_DEF1(is_pointer,T,::boost::detail::is_pointer_impl<T>::value)
#if defined(__BORLANDC__) && !defined(__COMO__) && (__BORLANDC__ < 0x600)
BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_pointer,T&,false)
BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_pointer,T& const,false)
BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_pointer,T& volatile,false)
BOOST_TT_AUX_BOOL_TRAIT_PARTIAL_SPEC1_1(typename T,is_pointer,T& const volatile,false)
#endif
#endif
} // namespace boost
#include <boost/type_traits/detail/bool_trait_undef.hpp>
#endif // BOOST_TT_IS_POINTER_HPP_INCLUDED