From 55a83b64082418a10c2f5f756e38e0eb3371b63d Mon Sep 17 00:00:00 2001
From: John Maddock <john@johnmaddock.co.uk>
Date: Sun, 13 Jan 2002 12:09:39 +0000
Subject: [PATCH] Added forwarding get functions to solve problems with
 using::tuples::get statement.

[SVN r12290]
---
 include/boost/tuple/tuple.hpp | 43 +++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/include/boost/tuple/tuple.hpp b/include/boost/tuple/tuple.hpp
index 01772e6..5960314 100644
--- a/include/boost/tuple/tuple.hpp
+++ b/include/boost/tuple/tuple.hpp
@@ -37,7 +37,50 @@ namespace boost {
 using tuples::tuple;
 using tuples::make_tuple;
 using tuples::tie;
+#if !defined(BOOST_NO_USING_TEMPLATE)
 using tuples::get;
+#elif !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)
+//
+// The "using tuples::get" statement causes the
+// Borland compiler to ICE, use forwarding
+// functions instead:
+//
+template<int N, class HT, class TT>
+inline typename tuples::access_traits<
+                  typename tuples::element<N, tuples::cons<HT, TT> >::type
+                >::non_const_type
+get(tuples::cons<HT, TT>& c) {
+  return tuples::get<N,HT,TT>(c);
+} 
+// get function for const cons-lists, returns a const reference to
+// the element. If the element is a reference, returns the reference
+// as such (that is, can return a non-const reference)
+template<int N, class HT, class TT>
+inline typename tuples::access_traits<
+                  typename tuples::element<N, tuples::cons<HT, TT> >::type
+                >::const_type
+get(const tuples::cons<HT, TT>& c) {
+  return tuples::get<N,HT,TT>(c);
+}
+#else  // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+//
+// MSVC, using declarations don't mix with templates well,
+// so use forwarding functions instead:
+//
+template<int N, typename Head, typename Tail>
+typename tuples::detail::element_ref<N, tuples::cons<Head, Tail> >::RET
+get(tuples::cons<Head, Tail>& t, tuples::detail::workaround_holder<N>* = 0)
+{
+   return tuples::detail::get_class<N>::get(t);
+}
+
+template<int N, typename Head, typename Tail>
+typename tuples::detail::element_const_ref<N, tuples::cons<Head, Tail> >::RET
+get(const tuples::cons<Head, Tail>& t, tuples::detail::workaround_holder<N>* = 0)
+{
+   return tuples::detail::get_class<N>::get(t);
+}
+#endif // BOOST_NO_USING_TEMPLATE
    
 } // end namespace boost