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Fixed VC7 compile problems (thanks to Sofus Mortensen).

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[SVN r13482]
This commit is contained in:
John Maddock
2002-04-14 11:45:32 +00:00
parent ce02fa0c58
commit 6d2cb1d793
1 changed files with 53 additions and 0 deletions
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53
include/boost/tuple/detail/tuple_basic_no_partial_spec.hpp
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@ -246,6 +246,58 @@ namespace tuples {
namespace detail { namespace detail {
#if defined(BOOST_MSVC) && (BOOST_MSVC == 1300)
// special workaround for vc7:
template <bool x>
struct reference_adder
{
template <class T>
struct rebind
{
typedef T& type;
};
};
template <>
struct reference_adder<true>
{
template <class T>
struct rebind
{
typedef T type;
};
};
// Return a reference to the Nth type of the given Tuple
template<int N, typename Tuple>
struct element_ref
{
private:
typedef typename element<N, Tuple>::RET elt_type;
enum { is_ref = is_reference<elt_type>::value };
public:
typedef reference_adder<is_ref>::rebind<elt_type>::type RET;
typedef RET type;
};
// Return a const reference to the Nth type of the given Tuple
template<int N, typename Tuple>
struct element_const_ref
{
private:
typedef typename element<N, Tuple>::RET elt_type;
enum { is_ref = is_reference<elt_type>::value };
public:
typedef reference_adder<is_ref>::rebind<const elt_type>::type RET;
typedef RET type;
};
#else // vc7
// Return a reference to the Nth type of the given Tuple // Return a reference to the Nth type of the given Tuple
template<int N, typename Tuple> template<int N, typename Tuple>
struct element_ref struct element_ref
@ -269,6 +321,7 @@ namespace tuples {
typedef typename add_reference<const elt_type>::type RET; typedef typename add_reference<const elt_type>::type RET;
typedef RET type; typedef RET type;
}; };
#endif // vc7
} // namespace detail } // namespace detail