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Used inheritance for syntax-friendly use in conditionals.

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[SVN r18374]
This commit is contained in:
Dave Abrahams
2003-05-08 22:22:39 +00:00
parent 6337bf66de
commit e44d098414
2 changed files with 17 additions and 5 deletions
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20
include/boost/mpl/distance.hpp
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@@ -63,13 +63,25 @@ template<
, typename BOOST_MPL_AUX_VOID_SPEC_PARAM(Last) , typename BOOST_MPL_AUX_VOID_SPEC_PARAM(Last)
> >
struct distance struct distance
{ // Aleksey claims borland doesn't like inheritance here, but it passes
// agurt, 29/sep/02: Borland doesn't like inheritance here // all the same tests; the workaround can easily be enabled again if
typedef typename aux::distance_impl< // verified. -- dwa 2003/5/8
# if 1 || !defined(__BORLANDC__)
: aux::distance_impl<
typename BOOST_MPL_AUX_ITERATOR_CATEGORY(First) typename BOOST_MPL_AUX_ITERATOR_CATEGORY(First)
, First , First
, Last , Last
>::type type; >
# endif
{
# if 0 && defined(__BORLANDC__)
typedef typename aux::distance_impl<
typename BOOST_MPL_AUX_ITERATOR_CATEGORY(First)
, First
, Last
>::type type;
BOOST_STATIC_CONSTANT(typename type::value_type, value = type::value);
# endif
}; };
BOOST_MPL_AUX_AGLORITHM_NAMESPACE_END BOOST_MPL_AUX_AGLORITHM_NAMESPACE_END

2
include/boost/mpl/vector/aux_/iterator.hpp
View File

@@ -54,8 +54,8 @@ struct vector_iterator
template< typename Other > template< typename Other >
struct BOOST_MPL_AUX_ITERATOR_DISTANCE struct BOOST_MPL_AUX_ITERATOR_DISTANCE
: minus<typename Other::pos,Pos>
{ {
typedef typename minus<typename Other::pos,Pos>::type type;
}; };
}; };