[Boost-commit] svn:boost r66670 - sandbox/statistics/support/boost/mpl/detail

Subject: [Boost-commit] svn:boost r66670 - sandbox/statistics/support/boost/mpl/detail
From: erwann.rogard_at_[hidden]
Date: 2010-11-21 21:45:52

Author: e_r
Date: 2010-11-21 21:45:49 EST (Sun, 21 Nov 2010)
New Revision: 66670
URL: http://svn.boost.org/trac/boost/changeset/66670

Log:
adding small mpl file for cpp0x
Added:
   sandbox/statistics/support/boost/mpl/detail/variadic_args_to_indices.hpp   (contents, props changed)

Added: sandbox/statistics/support/boost/mpl/detail/variadic_args_to_indices.hpp
==============================================================================
--- (empty file)
+++ sandbox/statistics/support/boost/mpl/detail/variadic_args_to_indices.hpp	2010-11-21 21:45:49 EST (Sun, 21 Nov 2010)
@@ -0,0 +1,52 @@
+#ifndef BOOST_MPL_DETAIL_VARIADIC_ARGS_TO_INDICES_HPP_ER_2010
+#define BOOST_MPL_DETAIL_VARIADIC_ARGS_TO_INDICES_HPP_ER_2010
+
+// Provided temporarily, until /variadic_template/package_range_c.hpp by
+// Larry Evans is fully supported in the release.
+// Source : http://groups.google.com/group/comp.lang.c++/browse_thread/thread/b21c20c4312c383f/3b842a03167f5bd9#3b842a03167f5bd9
+
+namespace boost{
+namespace mpl{
+namespace er2010{
+
+template<typename I, I...Values> struct indices{};
+
+namespace impl{
+
+template<typename ...Args> struct pack_holder{};
+
+template<typename Indices,typename Pack> struct args_to_indices{};
+
+template<typename I, I...Tail, typename T, typename... Rest>
+struct args_to_indices<
+    indices<I, Tail...>,
+    impl::pack_holder<T, Rest...>
+>
+{
+    typedef typename impl::args_to_indices<
+        indices<I, Tail..., sizeof...(Tail)>,
+        pack_holder<Rest...>
+    >::type type;
+};
+
+template<typename I, I...Tail>
+struct args_to_indices<
+    indices<I, Tail...>,
+    pack_holder<>
+>{
+    typedef indices<I, Tail...> type;
+};
+
+}// impl
+
+template<typename I,typename...Args>
+struct args_to_indices : impl::args_to_indices<
+    indices<I>,
+    impl::pack_holder<Args...>
+>{};
+
+}// er2010
+}// mpl
+}// boost
+
+#endif // BOOST_MPL_DETAIL_VARIADIC_ARGS_TO_INDICES_HPP_ER_2010