comparison DEPENDENCIES/generic/include/boost/aligned_storage.hpp @ 16:2665513ce2d3

Add boost headers

+//-----------------------------------------------------------------------------
+// boost aligned_storage.hpp header file
+// See http://www.boost.org for updates, documentation, and revision history.
+//-----------------------------------------------------------------------------
+//
+// Copyright (c) 2002-2003
+// Eric Friedman, Itay Maman
+//
+// 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_ALIGNED_STORAGE_HPP
+#define BOOST_ALIGNED_STORAGE_HPP
+
+#include <cstddef> // for std::size_t
+
+#include "boost/config.hpp"
+#include "boost/detail/workaround.hpp"
+#include "boost/type_traits/alignment_of.hpp"
+#include "boost/type_traits/type_with_alignment.hpp"
+#include "boost/type_traits/is_pod.hpp"
+
+#include "boost/mpl/eval_if.hpp"
+#include "boost/mpl/identity.hpp"
+
+#include "boost/type_traits/detail/bool_trait_def.hpp"
+
+namespace boost {
+
+namespace detail { namespace aligned_storage {
+
+BOOST_STATIC_CONSTANT(
+      std::size_t
+    , alignment_of_max_align = ::boost::alignment_of<max_align>::value
+    );
+
+//
+// To be TR1 conforming this must be a POD type:
+//
+template <
+      std::size_t size_
+    , std::size_t alignment_
+>
+struct aligned_storage_imp
+{
+    union data_t
+    {
+        char buf[size_];
+
+        typename mpl::eval_if_c<
+              alignment_ == std::size_t(-1)
+            , mpl::identity<detail::max_align>
+            , type_with_alignment<alignment_>
+            >::type align_;
+    } data_;
+    void* address() const { return const_cast<aligned_storage_imp*>(this); }
+};
+
+template< std::size_t alignment_ >
+struct aligned_storage_imp<0u,alignment_>
+{
+    /* intentionally empty */
+    void* address() const { return 0; }
+};
+
+}} // namespace detail::aligned_storage
+
+template <
+      std::size_t size_
+    , std::size_t alignment_ = std::size_t(-1)
+>
+class aligned_storage : 
+#ifndef __BORLANDC__
+   private 
+#else
+   public
+#endif
+   detail::aligned_storage::aligned_storage_imp<size_, alignment_> 
+{
+ 
+public: // constants
+
+    typedef detail::aligned_storage::aligned_storage_imp<size_, alignment_> type;
+
+    BOOST_STATIC_CONSTANT(
+          std::size_t
+        , size = size_
+        );
+    BOOST_STATIC_CONSTANT(
+          std::size_t
+        , alignment = (
+              alignment_ == std::size_t(-1)
+            ? ::boost::detail::aligned_storage::alignment_of_max_align
+            : alignment_
+            )
+        );
+
+#if defined(__GNUC__) &&\
+    (__GNUC__ >  3) ||\
+    (__GNUC__ == 3 && (__GNUC_MINOR__ >  2 ||\
+                      (__GNUC_MINOR__ == 2 && __GNUC_PATCHLEVEL__ >=3)))
+
+private: // noncopyable
+
+    aligned_storage(const aligned_storage&);
+    aligned_storage& operator=(const aligned_storage&);
+
+#else // gcc less than 3.2.3
+
+public: // _should_ be noncopyable, but GCC compiler emits error
+
+    aligned_storage(const aligned_storage&);
+    aligned_storage& operator=(const aligned_storage&);
+
+#endif // gcc < 3.2.3 workaround
+
+public: // structors
+
+    aligned_storage()
+    {
+    }
+
+    ~aligned_storage()
+    {
+    }
+
+public: // accessors
+
+    void* address()
+    {
+        return static_cast<type*>(this)->address();
+    }
+
+#if !BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+
+    const void* address() const
+    {
+        return static_cast<const type*>(this)->address();
+    }
+
+#else // MSVC6
+
+    const void* address() const;
+
+#endif // MSVC6 workaround
+
+};
+
+#if BOOST_WORKAROUND(BOOST_MSVC, < 1300)
+
+// MSVC6 seems not to like inline functions with const void* returns, so we
+// declare the following here:
+
+template <std::size_t S, std::size_t A>
+const void* aligned_storage<S,A>::address() const
+{
+    return const_cast< aligned_storage<S,A>* >(this)->address();
+}
+
+#endif // MSVC6 workaround
+
+#ifndef BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION
+//
+// Make sure that is_pod recognises aligned_storage<>::type
+// as a POD (Note that aligned_storage<> itself is not a POD):
+//
+template <std::size_t size_, std::size_t alignment_>
+struct is_pod<boost::detail::aligned_storage::aligned_storage_imp<size_,alignment_> >
+   BOOST_TT_AUX_BOOL_C_BASE(true)
+{ 
+    BOOST_TT_AUX_BOOL_TRAIT_VALUE_DECL(true)
+}; 
+#endif
+
+
+} // namespace boost
+
+#include "boost/type_traits/detail/bool_trait_undef.hpp"
+
+#endif // BOOST_ALIGNED_STORAGE_HPP