整理

include/boost/numeric/odeint/util/is_resizeable.hpp

@@ -0,0 +1,84 @@
+/*
+ [auto_generated]
+ boost/numeric/odeint/util/is_resizeable.hpp
+
+ [begin_description]
+ Metafunction to determine if a state type can resized. For usage in the steppers.
+ [end_description]
+
+ Copyright 2011-2012 Karsten Ahnert
+ Copyright 2011 Mario Mulansky
+
+ 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)
+ */
+
+
+#ifndef BOOST_NUMERIC_ODEINT_UTIL_IS_RESIZEABLE_HPP_INCLUDED
+#define BOOST_NUMERIC_ODEINT_UTIL_IS_RESIZEABLE_HPP_INCLUDED
+
+
+#include <vector>
+#include <type_traits>
+
+#include <boost/type_traits/integral_constant.hpp>
+#include <boost/type_traits/remove_reference.hpp>
+#include <boost/fusion/include/front.hpp>
+#include <boost/fusion/include/is_sequence.hpp>
+
+#include <boost/mpl/find_if.hpp>
+#include <boost/mpl/end.hpp>
+#include <boost/mpl/placeholders.hpp>
+#include <boost/mpl/if.hpp>
+#include <boost/type_traits/is_same.hpp>
+
+namespace boost {
+namespace numeric {
+namespace odeint {
+   
+/*
+ * by default any type is not resizable
+ */
+template< typename Container , typename Enabler = void >
+struct is_resizeable_sfinae : std::false_type {};
+
+template< typename Container >
+struct is_resizeable : is_resizeable_sfinae< Container > {};
+
+
+
+/*
+ * specialization for std::vector
+ */
+template< class V, class A >
+struct is_resizeable< std::vector< V , A  > > : std::true_type {};
+
+
+/*
+ * sfinae specialization for fusion sequences
+ */
+template< typename FusionSequence >
+struct is_resizeable_sfinae<
+    FusionSequence ,
+    typename boost::enable_if< typename boost::fusion::traits::is_sequence< FusionSequence >::type >::type >
+{
+    typedef typename boost::mpl::find_if< FusionSequence , is_resizeable< boost::mpl::_1 > >::type iter;
+    typedef typename boost::mpl::end< FusionSequence >::type last;
+
+    typedef typename boost::mpl::if_< boost::is_same< iter , last > , std::false_type , std::true_type >::type type;
+    const static bool value = type::value;
+};
+
+
+
+
+
+
+} // namespace odeint
+} // namespace numeric
+} // namespace boost
+
+
+
+#endif // BOOST_NUMERIC_ODEINT_UTIL_IS_RESIZEABLE_HPP_INCLUDED