add boost on mac

macx64/include/boost/test/data/monomorphic/delayed.hpp

@@ -0,0 +1,124 @@
+//  (C) Copyright Raffi Enficiaud 2018.
+//  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)
+
+//  See http://www.boost.org/libs/test for the library home page.
+//
+/// @file
+/// Defines a lazy/delayed dataset store
+// ***************************************************************************
+
+#ifndef BOOST_TEST_DATA_MONOMORPHIC_DELAYED_HPP_062018GER
+#define BOOST_TEST_DATA_MONOMORPHIC_DELAYED_HPP_062018GER
+
+// Boost.Test
+#include <boost/test/data/config.hpp>
+#include <boost/test/data/monomorphic/fwd.hpp>
+#include <boost/test/data/index_sequence.hpp>
+
+#include <boost/core/ref.hpp>
+
+#include <algorithm>
+#include <memory>
+
+#include <boost/test/detail/suppress_warnings.hpp>
+
+//____________________________________________________________________________//
+
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && \
+    !defined(BOOST_NO_CXX11_HDR_TUPLE)
+
+namespace boost {
+namespace unit_test {
+namespace data {
+namespace monomorphic {
+
+// ************************************************************************** //
+// **************               delayed_dataset                ************** //
+// ************************************************************************** //
+
+
+/// Delayed dataset
+///
+/// This dataset holds another dataset that is instanciated on demand. It is
+/// constructed with the @c data::make_delayed<dataset_t>(arg1,....) instead of the
+/// @c data::make.
+template <class dataset_t, class ...Args>
+class delayed_dataset
+{
+public:
+    enum { arity = dataset_t::arity };
+    using iterator = decltype(std::declval<dataset_t>().begin());
+
+    delayed_dataset(Args... args)
+    : m_args(std::make_tuple(std::forward<Args>(args)...))
+    {}
+
+    // Mostly for VS2013
+    delayed_dataset(delayed_dataset&& b) 
+    : m_args(std::move(b.m_args))
+    , m_dataset(std::move(b.m_dataset))
+    {}
+
+    boost::unit_test::data::size_t size() const {
+        return this->get().size();
+    }
+
+    // iterator
+    iterator begin() const {
+        return this->get().begin();
+    }
+  
+private:
+
+  dataset_t& get() const {
+      if(!m_dataset) {
+          m_dataset = create(boost::unit_test::data::index_sequence_for<Args...>());
+      }
+      return *m_dataset;
+  }
+
+  template<std::size_t... I>
+  std::unique_ptr<dataset_t>
+  create(boost::unit_test::data::index_sequence<I...>) const
+  {
+      return std::unique_ptr<dataset_t>{new dataset_t(std::get<I>(m_args)...)};
+  }
+
+  std::tuple<typename std::decay<Args>::type...> m_args;
+  mutable std::unique_ptr<dataset_t> m_dataset;
+};
+
+//____________________________________________________________________________//
+
+//! A lazy/delayed dataset is a dataset.
+template <class dataset_t, class ...Args>
+struct is_dataset< delayed_dataset<dataset_t, Args...> > : boost::mpl::true_ {};
+
+//____________________________________________________________________________//
+
+} // namespace monomorphic
+
+
+//! Delayed dataset instanciation
+template<class dataset_t, class ...Args>
+inline typename std::enable_if<
+  monomorphic::is_dataset< dataset_t >::value,
+  monomorphic::delayed_dataset<dataset_t, Args...>
+>::type
+make_delayed(Args... args)
+{
+    return monomorphic::delayed_dataset<dataset_t, Args...>( std::forward<Args>(args)... );
+}
+
+
+} // namespace data
+} // namespace unit_test
+} // namespace boost
+
+#endif
+
+#include <boost/test/detail/enable_warnings.hpp>
+
+#endif // BOOST_TEST_DATA_MONOMORPHIC_DELAYED_HPP_062018GER