summaryrefslogtreecommitdiff
path: root/boost/flyweight/flyweight_fwd.hpp
diff options
context:
space:
mode:
Diffstat (limited to 'boost/flyweight/flyweight_fwd.hpp')
-rw-r--r--boost/flyweight/flyweight_fwd.hpp42
1 files changed, 41 insertions, 1 deletions
diff --git a/boost/flyweight/flyweight_fwd.hpp b/boost/flyweight/flyweight_fwd.hpp
index 31b0674..81e2aef 100644
--- a/boost/flyweight/flyweight_fwd.hpp
+++ b/boost/flyweight/flyweight_fwd.hpp
@@ -1,4 +1,4 @@
-/* Copyright 2006-2008 Joaquin M Lopez Munoz.
+/* Copyright 2006-2014 Joaquin M Lopez Munoz.
* Distributed under 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)
@@ -19,6 +19,11 @@
#include <boost/preprocessor/punctuation/comma.hpp>
#include <iosfwd>
+#if !defined(BOOST_FLYWEIGHT_DISABLE_HASH_SUPPORT)
+#include <boost/functional/hash_fwd.hpp>
+#include <cstddef>
+#endif
+
namespace boost{
namespace flyweights{
@@ -159,6 +164,41 @@ using flyweights::flyweight;
} /* namespace boost */
+#if !defined(BOOST_FLYWEIGHT_DISABLE_HASH_SUPPORT)
+#if !defined(BOOST_NO_CXX11_HDR_FUNCTIONAL)
+
+#if !defined(_LIBCPP_VERSION)
+namespace std{
+template <class T> struct hash;
+}
+#else
+/* As discussed in http://lists.boost.org/Archives/boost/2011/02/177218.php */
+#include <functional>
+#endif
+
+namespace std{
+
+template<typename T,BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(_)>
+struct hash<boost::flyweight<T,BOOST_FLYWEIGHT_TEMPL_ARGS(_)> >;
+
+} /* namespace std */
+#endif /* !defined(BOOST_NO_CXX11_HDR_FUNCTIONAL) */
+
+namespace boost{
+#if !defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
+namespace flyweights{
+#endif
+
+template<typename T,BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS(_)>
+inline std::size_t hash_value(
+ const flyweight<T,BOOST_FLYWEIGHT_TEMPL_ARGS(_)>& x);
+
+#if !defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
+} /* namespace flyweights */
+#endif
+} /* namespace boost */
+#endif /* !defined(BOOST_FLYWEIGHT_DISABLE_HASH_SUPPORT) */
+
#undef BOOST_FLYWEIGHT_COMPLETE_COMP_OPS_DECL
#undef BOOST_FLYWEIGHT_TEMPL_ARGS
#undef BOOST_FLYWEIGHT_TYPENAME_TEMPL_ARGS