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[boost][range] Ticket 8702 - size_type detection

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[SVN r85690]
This commit is contained in:
Neil Groves
2013-09-15 21:54:32 +00:00
parent 90ce7f3703
commit f662a07bcc
2 changed files with 147 additions and 9 deletions
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13
include/boost/range/size_type.hpp
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@ -17,6 +17,7 @@
#include <boost/range/config.hpp>
#include <boost/range/difference_type.hpp>
#include <boost/range/concepts.hpp>
#ifdef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
#include <boost/range/detail/size_type.hpp>
#else
@ -45,8 +46,8 @@ namespace boost
template<typename C>
static yes_type test(BOOST_DEDUCED_TYPENAME C::size_type x);
template<typename C, typename Arg>
static no_type test(Arg x);
template<typename C>
static no_type test(...);
public:
static const bool value = sizeof(test<T>(0)) == sizeof(yes_type);
@ -74,12 +75,16 @@ namespace boost
template< class T >
struct range_size :
detail::range_size<T>
{ };
{
BOOST_RANGE_CONCEPT_ASSERT((boost::SinglePassRangeConcept<T>));
};
template< class T >
struct range_size<const T >
: detail::range_size<T>
{ };
{
BOOST_RANGE_CONCEPT_ASSERT((boost::SinglePassRangeConcept<T>));
};
} // namespace boost