Squashed 'third_party/boostorg/serialization/' content from commit 738695b
Change-Id: I48528198ad1f62b90288d249eb2243d4db02fd5d
git-subtree-dir: third_party/boostorg/serialization
git-subtree-split: 738695b70733f9d592a570fb17a505d6a029b48a
diff --git a/include/boost/serialization/void_cast.hpp b/include/boost/serialization/void_cast.hpp
new file mode 100644
index 0000000..97c5fe6
--- /dev/null
+++ b/include/boost/serialization/void_cast.hpp
@@ -0,0 +1,299 @@
+#ifndef BOOST_SERIALIZATION_VOID_CAST_HPP
+#define BOOST_SERIALIZATION_VOID_CAST_HPP
+
+// MS compatible compilers support #pragma once
+#if defined(_MSC_VER)
+# pragma once
+#endif
+
+/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
+// void_cast.hpp: interface for run-time casting of void pointers.
+
+// (C) Copyright 2002-2009 Robert Ramey - http://www.rrsd.com .
+// Use, modification and distribution is subject to 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)
+// gennadiy.rozental@tfn.com
+
+// See http://www.boost.org for updates, documentation, and revision history.
+
+#include <cstddef> // for ptrdiff_t
+#include <boost/config.hpp>
+#include <boost/noncopyable.hpp>
+
+#include <boost/serialization/smart_cast.hpp>
+#include <boost/serialization/singleton.hpp>
+#include <boost/serialization/force_include.hpp>
+#include <boost/serialization/type_info_implementation.hpp>
+#include <boost/serialization/extended_type_info.hpp>
+#include <boost/type_traits/is_virtual_base_of.hpp>
+#include <boost/serialization/void_cast_fwd.hpp>
+
+#include <boost/serialization/config.hpp>
+#include <boost/config/abi_prefix.hpp> // must be the last header
+
+#ifdef BOOST_MSVC
+# pragma warning(push)
+# pragma warning(disable : 4251 4231 4660 4275)
+#endif
+
+namespace boost {
+namespace serialization {
+
+class extended_type_info;
+
+// Given a void *, assume that it really points to an instance of one type
+// and alter it so that it would point to an instance of a related type.
+// Return the altered pointer. If there exists no sequence of casts that
+// can transform from_type to to_type, return a NULL.
+
+BOOST_SERIALIZATION_DECL void const *
+void_upcast(
+ extended_type_info const & derived,
+ extended_type_info const & base,
+ void const * const t
+);
+
+inline void *
+void_upcast(
+ extended_type_info const & derived,
+ extended_type_info const & base,
+ void * const t
+){
+ return const_cast<void*>(void_upcast(
+ derived,
+ base,
+ const_cast<void const *>(t)
+ ));
+}
+
+BOOST_SERIALIZATION_DECL void const *
+void_downcast(
+ extended_type_info const & derived,
+ extended_type_info const & base,
+ void const * const t
+);
+
+inline void *
+void_downcast(
+ extended_type_info const & derived,
+ extended_type_info const & base,
+ void * const t
+){
+ return const_cast<void*>(void_downcast(
+ derived,
+ base,
+ const_cast<void const *>(t)
+ ));
+}
+
+namespace void_cast_detail {
+
+class BOOST_SYMBOL_VISIBLE void_caster :
+ private boost::noncopyable
+{
+ friend
+ BOOST_SERIALIZATION_DECL void const *
+ boost::serialization::void_upcast(
+ extended_type_info const & derived,
+ extended_type_info const & base,
+ void const * const
+ );
+ friend
+ BOOST_SERIALIZATION_DECL void const *
+ boost::serialization::void_downcast(
+ extended_type_info const & derived,
+ extended_type_info const & base,
+ void const * const
+ );
+protected:
+ BOOST_SERIALIZATION_DECL void recursive_register(bool includes_virtual_base = false) const;
+ BOOST_SERIALIZATION_DECL void recursive_unregister() const;
+ virtual bool has_virtual_base() const = 0;
+public:
+ // Data members
+ const extended_type_info * m_derived;
+ const extended_type_info * m_base;
+ /*const*/ std::ptrdiff_t m_difference;
+ void_caster const * const m_parent;
+
+ // note that void_casters are keyed on value of
+ // member extended type info records - NOT their
+ // addresses. This is necessary in order for the
+ // void cast operations to work across dll and exe
+ // module boundries.
+ bool operator<(const void_caster & rhs) const;
+
+ const void_caster & operator*(){
+ return *this;
+ }
+ // each derived class must re-implement these;
+ virtual void const * upcast(void const * const t) const = 0;
+ virtual void const * downcast(void const * const t) const = 0;
+ // Constructor
+ void_caster(
+ extended_type_info const * derived,
+ extended_type_info const * base,
+ std::ptrdiff_t difference = 0,
+ void_caster const * const parent = 0
+ ) :
+ m_derived(derived),
+ m_base(base),
+ m_difference(difference),
+ m_parent(parent)
+ {}
+ virtual ~void_caster(){}
+};
+
+#ifdef BOOST_MSVC
+# pragma warning(push)
+# pragma warning(disable : 4251 4231 4660 4275 4511 4512)
+#endif
+
+template <class Derived, class Base>
+class BOOST_SYMBOL_VISIBLE void_caster_primitive :
+ public void_caster
+{
+ virtual void const * downcast(void const * const t) const {
+ const Derived * d =
+ boost::serialization::smart_cast<const Derived *, const Base *>(
+ static_cast<const Base *>(t)
+ );
+ return d;
+ }
+ virtual void const * upcast(void const * const t) const {
+ const Base * b =
+ boost::serialization::smart_cast<const Base *, const Derived *>(
+ static_cast<const Derived *>(t)
+ );
+ return b;
+ }
+ virtual bool has_virtual_base() const {
+ return false;
+ }
+public:
+ void_caster_primitive();
+ virtual ~void_caster_primitive();
+};
+
+template <class Derived, class Base>
+void_caster_primitive<Derived, Base>::void_caster_primitive() :
+ void_caster(
+ & type_info_implementation<Derived>::type::get_const_instance(),
+ & type_info_implementation<Base>::type::get_const_instance(),
+ /* note about displacement:
+ * displace 0: at least one compiler treated 0 by not shifting it at all
+ * displace by small value (8): caused ICE on certain mingw gcc versions */
+ reinterpret_cast<std::ptrdiff_t>(
+ static_cast<Derived *>(
+ reinterpret_cast<Base *>(1 << 20)
+ )
+ ) - (1 << 20)
+ )
+{
+ recursive_register();
+}
+
+template <class Derived, class Base>
+void_caster_primitive<Derived, Base>::~void_caster_primitive(){
+ recursive_unregister();
+}
+
+template <class Derived, class Base>
+class BOOST_SYMBOL_VISIBLE void_caster_virtual_base :
+ public void_caster
+{
+ virtual bool has_virtual_base() const {
+ return true;
+ }
+public:
+ virtual void const * downcast(void const * const t) const {
+ const Derived * d =
+ dynamic_cast<const Derived *>(
+ static_cast<const Base *>(t)
+ );
+ return d;
+ }
+ virtual void const * upcast(void const * const t) const {
+ const Base * b =
+ dynamic_cast<const Base *>(
+ static_cast<const Derived *>(t)
+ );
+ return b;
+ }
+ void_caster_virtual_base();
+ virtual ~void_caster_virtual_base();
+};
+
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+template <class Derived, class Base>
+void_caster_virtual_base<Derived,Base>::void_caster_virtual_base() :
+ void_caster(
+ & (type_info_implementation<Derived>::type::get_const_instance()),
+ & (type_info_implementation<Base>::type::get_const_instance())
+ )
+{
+ recursive_register(true);
+}
+
+template <class Derived, class Base>
+void_caster_virtual_base<Derived,Base>::~void_caster_virtual_base(){
+ recursive_unregister();
+}
+
+template <class Derived, class Base>
+struct BOOST_SYMBOL_VISIBLE void_caster_base :
+ public void_caster
+{
+ typedef
+ typename mpl::eval_if<boost::is_virtual_base_of<Base,Derived>,
+ mpl::identity<
+ void_cast_detail::void_caster_virtual_base<Derived, Base>
+ >
+ ,// else
+ mpl::identity<
+ void_cast_detail::void_caster_primitive<Derived, Base>
+ >
+ >::type type;
+};
+
+} // void_cast_detail
+
+template<class Derived, class Base>
+BOOST_DLLEXPORT
+inline const void_cast_detail::void_caster & void_cast_register(
+ Derived const * /* dnull = NULL */,
+ Base const * /* bnull = NULL */
+){
+ typedef
+ typename mpl::eval_if<boost::is_virtual_base_of<Base,Derived>,
+ mpl::identity<
+ void_cast_detail::void_caster_virtual_base<Derived, Base>
+ >
+ ,// else
+ mpl::identity<
+ void_cast_detail::void_caster_primitive<Derived, Base>
+ >
+ >::type typex;
+ return singleton<typex>::get_const_instance();
+}
+
+template<class Derived, class Base>
+class BOOST_SYMBOL_VISIBLE void_caster :
+ public void_cast_detail::void_caster_base<Derived, Base>::type
+{
+};
+
+} // namespace serialization
+} // namespace boost
+
+#ifdef BOOST_MSVC
+# pragma warning(pop)
+#endif
+
+#include <boost/config/abi_suffix.hpp> // pops abi_suffix.hpp pragmas
+
+#endif // BOOST_SERIALIZATION_VOID_CAST_HPP