[common][typetraits] Implement TMP utility functions to make tuple-like type...

[common][typetraits] Implement TMP utility functions to make tuple-like type lists from index sequences

dumux/common/typetraits/CMakeLists.txt

@@ -2,5 +2,6 @@ install(FILES
 isvalid.hh
 matrix.hh
 typetraits.hh
+utility.hh
 vector.hh
 DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/dumux/common/typetraits)

dumux/common/typetraits/utility.hh

+// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+// vi: set et ts=4 sw=4 sts=4:
+/*****************************************************************************
+ *   See the file COPYING for full copying permissions.                      *
+ *                                                                           *
+ *   This program is free software: you can redistribute it and/or modify    *
+ *   it under the terms of the GNU General Public License as published by    *
+ *   the Free Software Foundation, either version 2 of the License, or       *
+ *   (at your option) any later version.                                     *
+ *                                                                           *
+ *   This program is distributed in the hope that it will be useful,         *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of          *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the            *
+ *   GNU General Public License for more details.                            *
+ *                                                                           *
+ *   You should have received a copy of the GNU General Public License       *
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.   *
+ *****************************************************************************/
+/*!
+ * \file
+ * \ingroup Common
+ * \ingroup TypeTraits
+ * \brief Utilities for template meta programming
+ */
+#ifndef DUMUX_COMMON_TYPETRAITS_UTILITY_HH
+#define DUMUX_COMMON_TYPETRAITS_UTILITY_HH
+
+namespace Dumux {
+
+/*
+ * \ingroup TypeTraits
+ * \brief create a variadic template from indexed types
+ * \tparam V a variadic template that we want to create
+ * \tparam T an indexed type (type that gets an index as template parameter)
+ * \tparam U the list of indices
+ */
+template <template<typename... Args> class Variadic, template<std::size_t> class Indexed, class U>
+struct makeFromIndexedType;
+
+template <template<typename... Args> class Variadic, template<std::size_t> class Indexed, std::size_t... IndexSeq>
+struct makeFromIndexedType<Variadic, Indexed, std::index_sequence<IndexSeq...>>
+{
+    using type = Variadic<Indexed<IndexSeq>...>;
+};
+
+} // end namespace Dumux
+
+#endif