EQStream abstraction layer

libs/luabind/luabind/detail/compute_score.hpp

@@ -0,0 +1,73 @@
+// Copyright Daniel Wallin 2008. Use, modification and distribution is
+// subject to 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)
+
+#ifndef LUABIND_COMPUTE_RANK_081006_HPP
+# define LUABIND_COMPUTE_RANK_081006_HPP
+
+# include <luabind/config.hpp>
+# include <luabind/detail/policy.hpp>
+# include <boost/mpl/apply_wrap.hpp>
+# include <boost/mpl/begin_end.hpp>
+# include <boost/mpl/int.hpp>
+# include <boost/mpl/next.hpp>
+
+namespace luabind { namespace detail {
+
+namespace mpl = boost::mpl;
+
+template <class Idx, class Iter, class End, class Policies>
+int compute_score_aux(
+    lua_State*L, int index, Idx, Iter, End end, Policies const& policies)
+{
+    typedef typename Iter::type arg_type;
+    typedef typename find_conversion_policy<Idx::value, Policies>::type
+        conversion_policy;
+    typedef typename mpl::apply_wrap2<
+        conversion_policy, arg_type, lua_to_cpp>::type converter;
+
+    int score = converter::match(L, LUABIND_DECORATE_TYPE(arg_type), index);
+
+    if (score < 0)
+        return score;
+
+    if (conversion_policy::has_arg)
+        ++index;
+
+    int next = compute_score_aux(
+        L
+      , index
+      , typename mpl::next<Idx>::type()
+      , typename mpl::next<Iter>::type()
+      , end
+      , policies
+    );
+
+    if (next < 0)
+        return next;
+
+    return score + next;
+}
+
+template <class Idx, class End, class Policies>
+int compute_score_aux(lua_State*, int, Idx, End, End, Policies const&)
+{
+    return 0;
+}
+
+template <class Signature, class Policies>
+int compute_score(lua_State* L, Signature, Policies const& policies)
+{
+    return compute_score_aux(
+        L
+      , 1
+      , mpl::int_<1>()
+      , typename mpl::next<typename mpl::begin<Signature>::type>::type()
+      , typename mpl::end<Signature>::type()
+      , policies
+    );
+}
+
+}} // namespace luabind::detail
+
+#endif // LUABIND_COMPUTE_RANK_081006_HPP