Added boost header

test/external/boost/proto/detail/template_arity.hpp

@@ -0,0 +1,67 @@
+///////////////////////////////////////////////////////////////////////////////
+/// \file template_arity.hpp
+/// Replace all nodes stored by reference by nodes stored by value.
+//
+//  Copyright 2011 Eric Niebler. 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)
+//
+//  This file is based on a similar one in MPL from Aleksey Gurtovoy.
+
+#ifndef BOOST_PROTO_DETAIL_TEMPLATE_ARITY_HPP_EAN_2011_05_07
+#define BOOST_PROTO_DETAIL_TEMPLATE_ARITY_HPP_EAN_2011_05_07
+
+// Somewhat indirect definition of BOOST_PROTO_TEMPLATE_ARITY_PARAM is
+// to overcome a shortcoming of the Wave tool used to generate the
+// pre-preprocessed headers.
+#define BOOST_PROTO_TEMPLATE_ARITY_PARAM BOOST_PROTO_TEMPLATE_ARITY_PARAM2
+#define BOOST_PROTO_TEMPLATE_ARITY_PARAM2(param)
+
+#if defined(BOOST_PROTO_EXTENDED_TEMPLATE_PARAMETERS_MATCHING) ||                                   \
+  (defined(__WAVE__) && defined(BOOST_PROTO_CREATE_PREPROCESSED_FILES))
+
+#include <boost/preprocessor/cat.hpp>
+#include <boost/preprocessor/inc.hpp>
+#include <boost/preprocessor/iteration/iterate.hpp>
+#include <boost/preprocessor/repetition/enum_params.hpp>
+#include <boost/mpl/int.hpp>
+#include <boost/proto/proto_fwd.hpp>
+
+#undef BOOST_PROTO_TEMPLATE_ARITY_PARAM2
+#define BOOST_PROTO_TEMPLATE_ARITY_PARAM2(param) , param
+
+namespace boost { namespace proto { namespace detail
+{
+    sized_type<1>::type template_arity_helper(...);
+
+    // Other overloads generated by the preprocessor
+    #include <boost/proto/detail/template_arity_helper.hpp>
+
+    template<typename F, int N, int Size>
+    struct template_arity_impl2
+      : mpl::int_<Size - 1>
+    {};
+
+    template<typename F, int N = BOOST_PROTO_MAX_ARITY>
+    struct template_arity
+      : template_arity_impl2<
+            F
+          , N
+          , sizeof(detail::template_arity_helper((F **)0, (mpl::int_<N> *)0))
+        >
+    {};
+
+    template<typename F, int N>
+    struct template_arity_impl2<F, N, 1>
+      : template_arity<F, N-1>
+    {};
+
+    template<typename F>
+    struct template_arity_impl2<F, 0, 1>
+      : mpl::int_<-1>
+    {};
+
+}}}
+
+#endif // BOOST_PROTO_EXTENDED_TEMPLATE_PARAMETERS_MATCHING
+#endif // BOOST_PROTO_DETAIL_TEMPLATE_ARITY_HPP_EAN_2011_05_07