//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright David Abrahams, Vicente Botet 2009.
// (C) Copyright Ion Gaztanaga 2009-2010.
// 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/move for documentation.
//
//////////////////////////////////////////////////////////////////////////////
//! \file
#ifndef BOOST_MOVE_MOVE_HPP
#define BOOST_MOVE_MOVE_HPP
#if !defined(BOOST_MOVE_DOXYGEN_INVOKED)
/// @cond
#include <boost/config.hpp>
#ifdef BOOST_MSVC
#ifndef _CRT_SECURE_NO_DEPRECATE
#define BOOST_INTERPROCESS_CRT_SECURE_NO_DEPRECATE
#define _CRT_SECURE_NO_DEPRECATE
#endif
#ifndef _SCL_SECURE_NO_WARNINGS
#define BOOST_INTERPROCESS_SCL_SECURE_NO_WARNINGS
#define _SCL_SECURE_NO_WARNINGS
#endif
#pragma warning (push)
#pragma warning(disable:4996)
#endif
#include <algorithm> //copy, copy_backward
#include <memory> //uninitialized_copy
#include <iterator> //std::iterator
#define BOOST_MOVE_AVOID_BOOST_DEPENDENCIES
//If boost dependencies are avoided include all machinery
#if !defined(BOOST_MOVE_AVOID_BOOST_DEPENDENCIES)
#include <boost/utility/enable_if.hpp>
#include <boost/utility/addressof.hpp>
#include <boost/mpl/if.hpp>
#include <boost/mpl/bool.hpp>
#include <boost/mpl/and.hpp>
#include <boost/mpl/not.hpp>
#include <boost/mpl/identity.hpp>
#include <boost/type_traits/is_class.hpp>
#include <boost/type_traits/is_convertible.hpp>
#include <boost/type_traits/has_trivial_destructor.hpp>
#include <boost/type_traits/integral_constant.hpp>
#define BOOST_MOVE_MPL_NS ::boost::mpl
#define BOOST_MOVE_BOOST_NS ::boost
#else
#define BOOST_MOVE_MPL_NS ::boost::move_detail
#define BOOST_MOVE_BOOST_NS ::boost::move_detail
#endif //#ifdef BOOST_MOVE_AVOID_BOOST_DEPENDENCIES
//Small meta-typetraits to support move
#ifdef BOOST_MOVE_AVOID_BOOST_DEPENDENCIES
namespace boost {
namespace move_detail {
//if_
template<bool C, typename T1, typename T2>
struct if_c
{
typedef T1 type;
};
template<typename T1, typename T2>
struct if_c<false,T1,T2>
{
typedef T2 type;
};
template<typename T1, typename T2, typename T3>
struct if_
{
typedef typename if_c<0 != T1::value, T2, T3>::type type;
};
//enable_if_
template <bool B, class T = void>
struct enable_if_c
{
typedef T type;
};
template <class T>
struct enable_if_c<false, T> {};
template <class Cond, class T = void>
struct enable_if : public enable_if_c<Cond::value, T> {};
template <class Cond, class T = void>
struct disable_if : public enable_if_c<!Cond::value, T> {};
//integral_constant
template<class T, T v>
struct integral_constant
{
static const T value = v;
typedef T value_type;
typedef integral_constant<T, v> type;
};
//identity
template <class T>
struct identity
{
typedef T type;
};
//is_convertible
template <class T, class U>
class is_convertible
{
typedef char true_t;
class false_t { char dummy[2]; };
static true_t dispatch(U);
static false_t dispatch(...);
static T &trigger();
public:
enum { value = sizeof(dispatch(trigger())) == sizeof(true_t) };
};
//and_ not_
template <typename Condition1, typename Condition2, typename Condition3 = integral_constant<bool, true> >
struct and_
: public integral_constant<bool, Condition1::value && Condition2::value && Condition3::value>
{};
template <typename Boolean>
struct not_
: public integral_constant<bool, !Boolean::value>
{};
//is_lvalue_reference
template<class T>
struct is_lvalue_reference
: public integral_constant<bool, false>
{};
template<class T>
struct is_lvalue_reference<T&>
: public integral_constant<bool, true>
{};
//has_trivial_destructor
template<class T>
struct has_trivial_destructor
: public integral_constant<bool, false>
{};
//addressof
template<class T> struct addr_impl_ref
{
T & v_;
inline addr_impl_ref( T & v ): v_( v ) {}
inline operator T& () const { return v_; }
private:
addr_impl_ref & operator=(const addr_impl_ref &);
};
template<class T> struct addressof_impl
{
static inline T * f( T & v, long )
{
return reinterpret_cast<T*>(
&const_cast<char&>(reinterpret_cast<const volatile char &>(v)));
}
static inline T * f( T * v, int )
{ return v; }
};
template<class T>
inline T * addressof( T & v )
{
return ::boost::move_detail::addressof_impl<T>::f
( ::boost::move_detail::addr_impl_ref<T>( v ), 0 );
}
} //namespace move_detail {
} //namespace boost {
#endif //BOOST_MOVE_AVOID_BOOST_DEPENDENCIES
//Compiler workaround detection
#if !defined(BOOST_NO_RVALUE_REFERENCES)
#if defined(__GNUC__) && (__GNUC__ == 4) && (__GNUC_MINOR__ < 5) && !defined(__clang__)
//Pre-standard rvalue binding rules
#define BOOST_MOVE_OLD_RVALUE_REF_BINDING_RULES
#elif defined(_MSC_VER) && (_MSC_VER == 1600)
//Standard rvalue binding rules but with some bugs
#define BOOST_MOVE_MSVC_10_MEMBER_RVALUE_REF_BUG
//Use standard library for MSVC to avoid namespace issues as
//some move calls in the STL are not fully qualified.
//#define BOOST_MOVE_USE_STANDARD_LIBRARY_MOVE
#endif
#endif
/// @endcond
#endif //#if !defined(BOOST_MOVE_DOXYGEN_INVOKED)
#if defined(BOOST_NO_RVALUE_REFERENCES) && !defined(BOOST_MOVE_DOXYGEN_INVOKED)
//Move emulation rv breaks standard aliasing rules so add workarounds for some compilers
#if defined(__GNUC__) && (__GNUC__ >= 4)
#define BOOST_MOVE_ATTRIBUTE_MAY_ALIAS __attribute__((__may_alias__))
#else
#define BOOST_MOVE_ATTRIBUTE_MAY_ALIAS
#endif
namespace boost {
namespace move_detail {
template<class T>
struct is_class_or_union
{
struct twochar { char _[2]; };
template <class U>
static char is_class_or_union_tester(void(U::*)(void));
template <class U>
static twochar is_class_or_union_tester(...);
static const bool value = sizeof(is_class_or_union_tester<T>(0)) == sizeof(char);
};
struct empty{};
}
//////////////////////////////////////////////////////////////////////////////
//
// struct rv
//
//////////////////////////////////////////////////////////////////////////////
template <class T>
class rv
: public BOOST_MOVE_MPL_NS::if_c
< ::boost::move_detail::is_class_or_union<T>::value
, T
, ::boost::move_detail::empty
>::type
{
rv();
~rv();
rv(rv const&);
void operator=(rv const&);
} BOOST_MOVE_ATTRIBUTE_MAY_ALIAS;
//////////////////////////////////////////////////////////////////////////////
//
// move_detail::is_rv
//
//////////////////////////////////////////////////////////////////////////////
namespace move_detail {
template <class T>
struct is_rv
: BOOST_MOVE_BOOST_NS::integral_constant<bool, false>
{};
template <class T>
struct is_rv< rv<T> >
: BOOST_MOVE_BOOST_NS::integral_constant<bool, true>
{};
template <class T>
struct is_rv< const rv<T> >
: BOOST_MOVE_BOOST_NS::integral_constant<bool, true>
{};
} //namespace move_detail {
//////////////////////////////////////////////////////////////////////////////
//
// has_move_emulation_enabled
//
//////////////////////////////////////////////////////////////////////////////
template<class T>
struct has_move_emulation_enabled
: BOOST_MOVE_BOOST_NS::is_convertible< T, ::boost::rv<T>& >
{};
template<class T>
struct has_move_emulation_enabled<T&>
: BOOST_MOVE_BOOST_NS::integral_constant<bool, false>
{};
template<class T>
struct has_move_emulation_enabled< ::boost::rv<T> >
: BOOST_MOVE_BOOST_NS::integral_constant<bool, false>
{};
template <class T>
struct has_move_emulation_enabled_aux
: has_move_emulation_enabled<T> {};
template <class T>
struct has_nothrow_move
: public BOOST_MOVE_BOOST_NS::integral_constant<bool, false>
{};
//////////////////////////////////////////////////////////////////////////////
//
// move()
//
//////////////////////////////////////////////////////////////////////////////
template <class T>
inline typename BOOST_MOVE_BOOST_NS::disable_if<has_move_emulation_enabled_aux<T>, T&>::type move(T& x)
{
return x;
}
template <class T>
inline typename BOOST_MOVE_BOOST_NS::enable_if<has_move_emulation_enabled<T>, rv<T>&>::type move(T& x)
{
return *static_cast<rv<T>* >(BOOST_MOVE_BOOST_NS::addressof(x));
}
template <class T>
inline typename BOOST_MOVE_BOOST_NS::enable_if<has_move_emulation_enabled<T>, rv<T>&>::type move(rv<T>& x)
{
return x;
}
#define BOOST_RV_REF(TYPE)\
::boost::rv< TYPE >& \
//
#define BOOST_RV_REF_2_TEMPL_ARGS(TYPE, ARG1, ARG2)\
::boost::rv< TYPE<ARG1, ARG2> >& \
//
#define BOOST_RV_REF_3_TEMPL_ARGS(TYPE, ARG1, ARG2, ARG3)\
::boost::rv< TYPE<ARG1, ARG2, ARG3> >& \
//
#define BOOST_RV_REF_BEG\
::boost::rv< \
//
#define BOOST_RV_REF_END\
>& \
//
#define BOOST_FWD_REF(TYPE)\
const TYPE & \
//
#define BOOST_CATCH_CONST_RLVALUE(TYPE)\
const ::boost::rv< TYPE >& \
//
#define BOOST_COPY_ASSIGN_REF(TYPE)\
const ::boost::rv< TYPE >& \
//
#define BOOST_COPY_ASSIGN_REF_BEG \
const ::boost::rv< \
//
#define BOOST_COPY_ASSIGN_REF_END \
>& \
//
#define BOOST_MOVE_COPY_ASSIGN_REF_2_TEMPL_ARGS(TYPE, ARG1, ARG2)\
const ::boost::rv< TYPE<ARG1, ARG2> >& \
//
#define BOOST_MOVE_COPY_ASSIGN_REF_3_TEMPL_ARGS(TYPE, ARG1, ARG2, ARG3)\
const ::boost::rv< TYPE<ARG1, ARG2, ARG3> >& \
//
//////////////////////////////////////////////////////////////////////////////
//
// forward()
//
//////////////////////////////////////////////////////////////////////////////
template <class T>
inline typename BOOST_MOVE_BOOST_NS::enable_if< ::boost::move_detail::is_rv<T>, T &>::type
forward(const typename BOOST_MOVE_MPL_NS::identity<T>::type &x)
{
return const_cast<T&>(x);
}
template <class T>
inline typename BOOST_MOVE_BOOST_NS::disable_if< ::boost::move_detail::is_rv<T>, const T &>::type
forward(const typename BOOST_MOVE_MPL_NS::identity<T>::type &x)
{
return x;
}
//////////////////////////////////////////////////////////////////////////////
//
// BOOST_MOVABLE_BUT_NOT_COPYABLE
//
//////////////////////////////////////////////////////////////////////////////
#define BOOST_MOVABLE_BUT_NOT_COPYABLE(TYPE)\
private:\
TYPE(TYPE &);\
TYPE& operator=(TYPE &);\
public:\
operator ::boost::rv<TYPE>&() \
{ return *static_cast< ::boost::rv<TYPE>* >(this); }\
operator const ::boost::rv<TYPE>&() const \
{ return *static_cast<const ::boost::rv<TYPE>* >(this); }\
private:\
//
//////////////////////////////////////////////////////////////////////////////
//
// BOOST_COPYABLE_AND_MOVABLE
//
//////////////////////////////////////////////////////////////////////////////
#define BOOST_COPYABLE_AND_MOVABLE(TYPE)\
public:\
TYPE& operator=(TYPE &t)\
{ this->operator=(static_cast<const ::boost::rv<TYPE> &>(const_cast<const TYPE &>(t))); return *this;}\
public:\
operator ::boost::rv<TYPE>&() \
{ return *static_cast< ::boost::rv<TYPE>* >(this); }\
operator const ::boost::rv<TYPE>&() const \
{ return *static_cast<const ::boost::rv<TYPE>* >(this); }\
private:\
//
#define BOOST_COPYABLE_AND_MOVABLE_ALT(TYPE)\
public:\
operator ::boost::rv<TYPE>&() \
{ return *static_cast< ::boost::rv<TYPE>* >(this); }\
operator const ::boost::rv<TYPE>&() const \
{ return *static_cast<const ::boost::rv<TYPE>* >(this); }\
private:\
//
} //namespace boost
#else //BOOST_NO_RVALUE_REFERENCES
namespace boost{
//! By default this traits returns false. Classes with non-throwing move constructor
//! and assignment should specialize this trait to obtain some performance improvements.
template <class T>
struct has_nothrow_move
: public BOOST_MOVE_MPL_NS::integral_constant<bool, false>
{};
} // namespace boost{
#if defined(BOOST_MOVE_USE_STANDARD_LIBRARY_MOVE)
#include <utility>
namespace boost{
using ::std::move;
using ::std::forward;
using ::std::move_backward;
} //namespace boost
#else //!BOOST_MOVE_USE_STANDARD_LIBRARY_MOVE
#include <boost/type_traits/remove_reference.hpp>
namespace boost {
//////////////////////////////////////////////////////////////////////////////
//
// move
//
//////////////////////////////////////////////////////////////////////////////
#if defined(BOOST_MOVE_DOXYGEN_INVOKED)
//! This function provides a way to convert a reference into a rvalue reference
//! in compilers with rvalue references. For other compilers converts T & into
//! <i>::boost::rv<T> &</i> so that move emulation is activated.
template <class T>
rvalue_reference move (input_reference);
#elif defined(BOOST_MOVE_OLD_RVALUE_REF_BINDING_RULES)
//Old move approach, lvalues could bind to rvalue references
template <class T>
inline typename remove_reference<T>::type && move(T&& t)
{ return t; }
#else //Old move
template <class T>
inline typename remove_reference<T>::type && move(T&& t)
{ return static_cast<typename remove_reference<T>::type &&>(t); }
#endif //Old move
//////////////////////////////////////////////////////////////////////////////
//
// forward
//
//////////////////////////////////////////////////////////////////////////////
#if defined(BOOST_MOVE_DOXYGEN_INVOKED)
//! This function provides limited form of forwarding that is usually enough for
//! in-place construction and avoids the exponential overloading necessary for
//! perfect forwarding in C++03.
//!
//! For compilers with rvalue references this function provides perfect forwarding.
//!
//! Otherwise:
//! * If input_reference binds to const ::boost::rv<T> & then it output_reference is
//! ::boost::rev<T> &
//!
//! * Else, input_reference is equal to output_reference is equal to input_reference.
template <class T> output_reference forward(input_reference);
#elif defined(BOOST_MOVE_OLD_RVALUE_REF_BINDING_RULES)
//Old move approach, lvalues could bind to rvalue references
template <class T>
inline T&& forward (typename BOOST_MOVE_MPL_NS::identity<T>::type&& t)
{ return t; }
#else //Old move
//Implementation #5 from N2951, thanks to Howard Hinnant
template <class T, class U>
inline T&& forward(U&& t
, typename BOOST_MOVE_BOOST_NS::enable_if_c<
move_detail::is_lvalue_reference<T>::value ? move_detail::is_lvalue_reference<U>::value : true>::type * = 0/*
, typename BOOST_MOVE_BOOST_NS::enable_if_c<
move_detail::is_convertible
<typename remove_reference<U>::type*, typename remove_reference<T>::type*>::value>::type * = 0*/)
{ return static_cast<T&&>(t); }
#endif //BOOST_MOVE_DOXYGEN_INVOKED
} //namespace boost {
#endif //#if defined(BOOST_MOVE_USE_STANDARD_LIBRARY_MOVE)
//! This macro marks a type as movable but not copyable, disabling copy construction
//! and assignment. The user will need to write a move constructor/assignment as explained
//! in the documentation to fully write a movable but not copyable class.
#define BOOST_MOVABLE_BUT_NOT_COPYABLE(TYPE)\
public:\
typedef int boost_move_emulation_t;\
private:\
TYPE(const TYPE &);\
TYPE& operator=(const TYPE &);\
//
//! This macro marks a type as copyable and movable.
//! The user will need to write a move constructor/assignment and a copy assignment
//! as explained in the documentation to fully write a copyable and movable class.
#define BOOST_COPYABLE_AND_MOVABLE(TYPE)\
//
#define BOOST_COPYABLE_AND_MOVABLE_ALT(TYPE)\
//
//!This macro is used to achieve portable syntax in move
//!constructors and assignments for classes marked as
//!BOOST_COPYABLE_AND_MOVABLE or BOOST_MOVABLE_BUT_NOT_COPYABLE
#define BOOST_RV_REF(TYPE)\
TYPE && \
//
//!This macro is used to achieve portable syntax in move
//!constructors and assignments for template classes marked as
//!BOOST_COPYABLE_AND_MOVABLE or BOOST_MOVABLE_BUT_NOT_COPYABLE.
//!As macros have problem with comma-separatd template arguments,
//!the template argument must be preceded with BOOST_RV_REF_START
//!and ended with BOOST_RV_REF_END
#define BOOST_RV_REF_BEG\
\
//
//!This macro is used to achieve portable syntax in move
//!constructors and assignments for template classes marked as
//!BOOST_COPYABLE_AND_MOVABLE or BOOST_MOVABLE_BUT_NOT_COPYABLE.
//!As macros have problem with comma-separatd template arguments,
//!the template argument must be preceded with BOOST_RV_REF_START
//!and ended with BOOST_RV_REF_END
#define BOOST_RV_REF_END\
&& \
//!This macro is used to achieve portable syntax in copy
//!assignment for classes marked as BOOST_COPYABLE_AND_MOVABLE.
#define BOOST_COPY_ASSIGN_REF(TYPE)\
const TYPE & \
//
//! This macro is used to implement portable perfect forwarding
//! as explained in the documentation.
#define BOOST_FWD_REF(TYPE)\
TYPE && \
//
#if !defined(BOOST_MOVE_DOXYGEN_INVOKED)
/// @cond
#define BOOST_RV_REF_2_TEMPL_ARGS(TYPE, ARG1, ARG2)\
TYPE<ARG1, ARG2> && \
//
#define BOOST_RV_REF_3_TEMPL_ARGS(TYPE, ARG1, ARG2, ARG3)\
TYPE<ARG1, ARG2, ARG3> && \
//
#define BOOST_COPY_REF_2_TEMPL_ARGS(TYPE, ARG1, ARG2)\
const TYPE<ARG1, ARG2> & \
//
#define BOOST_COPY_REF_3_TEMPL_ARGS(TYPE, ARG1, ARG2, ARG3)\
TYPE<ARG1, ARG2, ARG3>& \
//
#define BOOST_CATCH_CONST_RLVALUE(TYPE)\
const TYPE & \
//
/// @endcond
#endif //#if !defined(BOOST_MOVE_DOXYGEN_INVOKED)
#endif //BOOST_NO_RVALUE_REFERENCES
namespace boost {
//////////////////////////////////////////////////////////////////////////////
//
// move_iterator
//
//////////////////////////////////////////////////////////////////////////////
//! Class template move_iterator is an iterator adaptor with the same behavior
//! as the underlying iterator except that its dereference operator implicitly
//! converts the value returned by the underlying iterator's dereference operator
//! to an rvalue reference. Some generic algorithms can be called with move
//! iterators to replace copying with moving.
template <class It>
class move_iterator
{
public:
typedef It iterator_type;
typedef typename std::iterator_traits<iterator_type>::value_type value_type;
#if !defined(BOOST_NO_RVALUE_REFERENCES) || defined(BOOST_MOVE_DOXYGEN_INVOKED)
typedef value_type && reference;
#else
typedef typename BOOST_MOVE_MPL_NS::if_
< ::boost::has_move_emulation_enabled<value_type>
, ::boost::rv<value_type>&
, value_type & >::type reference;
#endif
typedef It pointer;
typedef typename std::iterator_traits<iterator_type>::difference_type difference_type;
typedef typename std::iterator_traits<iterator_type>::iterator_category iterator_category;
move_iterator()
{}
explicit move_iterator(It i)
: m_it(i)
{}
template <class U>
move_iterator(const move_iterator<U>& u)
: m_it(u.base())
{}
iterator_type base() const
{ return m_it; }
reference operator*() const
{
#if defined(BOOST_NO_RVALUE_REFERENCES) || defined(BOOST_MOVE_OLD_RVALUE_REF_BINDING_RULES)
return *m_it;
#else
return ::boost::move(*m_it);
#endif
}
pointer operator->() const
{ return m_it; }
move_iterator& operator++()
{ ++m_it; return *this; }
move_iterator<iterator_type> operator++(int)
{ move_iterator<iterator_type> tmp(*this); ++(*this); return tmp; }
move_iterator& operator--()
{ --m_it; return *this; }
move_iterator<iterator_type> operator--(int)
{ move_iterator<iterator_type> tmp(*this); --(*this); return tmp; }
move_iterator<iterator_type> operator+ (difference_type n) const
{ return move_iterator<iterator_type>(m_it + n); }
move_iterator& operator+=(difference_type n)
{ m_it += n; return *this; }
move_iterator<iterator_type> operator- (difference_type n) const
{ return move_iterator<iterator_type>(m_it - n); }
move_iterator& operator-=(difference_type n)
{ m_it -= n; return *this; }
reference operator[](difference_type n) const
{
#if defined(BOOST_NO_RVALUE_REFERENCES) || defined(BOOST_MOVE_OLD_RVALUE_REF_BINDING_RULES)
return m_it[n];
#else
return ::boost::move(m_it[n]);
#endif
}
friend bool operator==(const move_iterator& x, const move_iterator& y)
{ return x.base() == y.base(); }
friend bool operator!=(const move_iterator& x, const move_iterator& y)
{ return x.base() != y.base(); }
friend bool operator< (const move_iterator& x, const move_iterator& y)
{ return x.base() < y.base(); }
friend bool operator<=(const move_iterator& x, const move_iterator& y)
{ return x.base() <= y.base(); }
friend bool operator> (const move_iterator& x, const move_iterator& y)
{ return x.base() > y.base(); }
friend bool operator>=(const move_iterator& x, const move_iterator& y)
{ return x.base() >= y.base(); }
friend difference_type operator-(const move_iterator& x, const move_iterator& y)
{ return x.base() - y.base(); }
friend move_iterator operator+(difference_type n, const move_iterator& x)
{ return move_iterator(x.base() + n); }
private:
It m_it;
};
//is_move_iterator
namespace move_detail {
template <class I>
struct is_move_iterator
: public BOOST_MOVE_BOOST_NS::integral_constant<bool, false>
{
};
template <class I>
struct is_move_iterator< ::boost::move_iterator<I> >
: public BOOST_MOVE_BOOST_NS::integral_constant<bool, true>
{
};
} //namespace move_detail {
//////////////////////////////////////////////////////////////////////////////
//
// move_iterator
//
//////////////////////////////////////////////////////////////////////////////
//!
//! <b>Returns</b>: move_iterator<It>(i).
template<class It>
inline move_iterator<It> make_move_iterator(const It &it)
{ return move_iterator<It>(it); }
//////////////////////////////////////////////////////////////////////////////
//
// back_move_insert_iterator
//
//////////////////////////////////////////////////////////////////////////////
//! A move insert iterator that move constructs elements at the
//! back of a container
template <typename C> // C models Container
class back_move_insert_iterator
: public std::iterator<std::output_iterator_tag, void, void, void, void>
{
C* container_m;
public:
typedef C container_type;
typedef typename C::value_type value_type;
typedef typename C::reference reference;
explicit back_move_insert_iterator(C& x) : container_m(&x) { }
back_move_insert_iterator& operator=(reference x)
{ container_m->push_back(boost::move(x)); return *this; }
back_move_insert_iterator& operator=(BOOST_RV_REF(value_type) x)
{ reference rx = x; return this->operator=(rx); }
back_move_insert_iterator& operator*() { return *this; }
back_move_insert_iterator& operator++() { return *this; }
back_move_insert_iterator& operator++(int) { return *this; }
};
//!
//! <b>Returns</b>: back_move_insert_iterator<C>(x).
template <typename C> // C models Container
inline back_move_insert_iterator<C> back_move_inserter(C& x)
{
return back_move_insert_iterator<C>(x);
}
//////////////////////////////////////////////////////////////////////////////
//
// front_move_insert_iterator
//
//////////////////////////////////////////////////////////////////////////////
//! A move insert iterator that move constructs elements int the
//! front of a container
template <typename C> // C models Container
class front_move_insert_iterator
: public std::iterator<std::output_iterator_tag, void, void, void, void>
{
C* container_m;
public:
typedef C container_type;
typedef typename C::value_type value_type;
typedef typename C::reference reference;
explicit front_move_insert_iterator(C& x) : container_m(&x) { }
front_move_insert_iterator& operator=(reference x)
{ container_m->push_front(boost::move(x)); return *this; }
front_move_insert_iterator& operator=(BOOST_RV_REF(value_type) x)
{ reference rx = x; return this->operator=(rx); }
front_move_insert_iterator& operator*() { return *this; }
front_move_insert_iterator& operator++() { return *this; }
front_move_insert_iterator& operator++(int) { return *this; }
};
//!
//! <b>Returns</b>: front_move_insert_iterator<C>(x).
template <typename C> // C models Container
inline front_move_insert_iterator<C> front_move_inserter(C& x)
{
return front_move_insert_iterator<C>(x);
}
//////////////////////////////////////////////////////////////////////////////
//
// insert_move_iterator
//
//////////////////////////////////////////////////////////////////////////////
template <typename C> // C models Container
class move_insert_iterator
: public std::iterator<std::output_iterator_tag, void, void, void, void>
{
C* container_m;
typename C::iterator pos_;
public:
typedef C container_type;
typedef typename C::value_type value_type;
typedef typename C::reference reference;
explicit move_insert_iterator(C& x, typename C::iterator pos)
: container_m(&x), pos_(pos)
{}
move_insert_iterator& operator=(reference x)
{
pos_ = container_m->insert(pos_, ::boost::move(x));
++pos_;
return *this;
}
move_insert_iterator& operator=(BOOST_RV_REF(value_type) x)
{ reference rx = x; return this->operator=(rx); }
move_insert_iterator& operator*() { return *this; }
move_insert_iterator& operator++() { return *this; }
move_insert_iterator& operator++(int) { return *this; }
};
//!
//! <b>Returns</b>: move_insert_iterator<C>(x, it).
template <typename C> // C models Container
inline move_insert_iterator<C> move_inserter(C& x, typename C::iterator it)
{
return move_insert_iterator<C>(x, it);
}
//////////////////////////////////////////////////////////////////////////////
//
// move
//
//////////////////////////////////////////////////////////////////////////////
#if !defined(BOOST_MOVE_USE_STANDARD_LIBRARY_MOVE)
//! <b>Effects</b>: Moves elements in the range [first,last) into the range [result,result + (last -
//! first)) starting from first and proceeding to last. For each non-negative integer n < (last-first),
//! performs *(result + n) = ::boost::move (*(first + n)).
//!
//! <b>Effects</b>: result + (last - first).
//!
//! <b>Requires</b>: result shall not be in the range [first,last).
//!
//! <b>Complexity</b>: Exactly last - first move assignments.
template <typename I, // I models InputIterator
typename O> // O models OutputIterator
O move(I f, I l, O result)
{
while (f != l) {
*result = ::boost::move(*f);
++f; ++result;
}
return result;
}
//////////////////////////////////////////////////////////////////////////////
//
// move_backward
//
//////////////////////////////////////////////////////////////////////////////
//! <b>Effects</b>: Moves elements in the range [first,last) into the range
//! [result - (last-first),result) starting from last - 1 and proceeding to
//! first. For each positive integer n <= (last - first),
//! performs *(result - n) = ::boost::move(*(last - n)).
//!
//! <b>Requires</b>: result shall not be in the range [first,last).
//!
//! <b>Returns</b>: result - (last - first).
//!
//! <b>Complexity</b>: Exactly last - first assignments.
template <typename I, // I models BidirectionalIterator
typename O> // O models BidirectionalIterator
O move_backward(I f, I l, O result)
{
while (f != l) {
--l; --result;
*result = ::boost::move(*l);
}
return result;
}
#endif //!defined(BOOST_MOVE_USE_STANDARD_LIBRARY_MOVE)
//////////////////////////////////////////////////////////////////////////////
//
// uninitialized_move
//
//////////////////////////////////////////////////////////////////////////////
//! <b>Effects</b>:
//! \code
//! for (; first != last; ++result, ++first)
//! new (static_cast<void*>(&*result))
//! typename iterator_traits<ForwardIterator>::value_type(boost::move(*first));
//! \endcode
//!
//! <b>Returns</b>: result
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
F uninitialized_move(I f, I l, F r
/// @cond
// ,typename BOOST_MOVE_BOOST_NS::enable_if<has_move_emulation_enabled<typename std::iterator_traits<I>::value_type> >::type* = 0
/// @endcond
)
{
typedef typename std::iterator_traits<I>::value_type input_value_type;
while (f != l) {
::new(static_cast<void*>(&*r)) input_value_type(boost::move(*f));
++f; ++r;
}
return r;
}
/// @cond
/*
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
F uninitialized_move(I f, I l, F r,
typename BOOST_MOVE_BOOST_NS::disable_if<has_move_emulation_enabled<typename std::iterator_traits<I>::value_type> >::type* = 0)
{
return std::uninitialized_copy(f, l, r);
}
*/
//////////////////////////////////////////////////////////////////////////////
//
// uninitialized_copy_or_move
//
//////////////////////////////////////////////////////////////////////////////
namespace move_detail {
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline F uninitialized_move_move_iterator(I f, I l, F r
// ,typename BOOST_MOVE_BOOST_NS::enable_if< has_move_emulation_enabled<typename I::value_type> >::type* = 0
)
{
return ::boost::uninitialized_move(f, l, r);
}
/*
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
F uninitialized_move_move_iterator(I f, I l, F r,
typename BOOST_MOVE_BOOST_NS::disable_if< has_move_emulation_enabled<typename I::value_type> >::type* = 0)
{
return std::uninitialized_copy(f.base(), l.base(), r);
}
*/
} //namespace move_detail {
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline F uninitialized_copy_or_move(I f, I l, F r,
typename BOOST_MOVE_BOOST_NS::enable_if< move_detail::is_move_iterator<I> >::type* = 0)
{
return ::boost::move_detail::uninitialized_move_move_iterator(f, l, r);
}
//////////////////////////////////////////////////////////////////////////////
//
// copy_or_move
//
//////////////////////////////////////////////////////////////////////////////
namespace move_detail {
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline F move_move_iterator(I f, I l, F r
// ,typename BOOST_MOVE_BOOST_NS::enable_if< has_move_emulation_enabled<typename I::value_type> >::type* = 0
)
{
return ::boost::move(f, l, r);
}
/*
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
F move_move_iterator(I f, I l, F r,
typename BOOST_MOVE_BOOST_NS::disable_if< has_move_emulation_enabled<typename I::value_type> >::type* = 0)
{
return std::copy(f.base(), l.base(), r);
}
*/
} //namespace move_detail {
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline F copy_or_move(I f, I l, F r,
typename BOOST_MOVE_BOOST_NS::enable_if< move_detail::is_move_iterator<I> >::type* = 0)
{
return ::boost::move_detail::move_move_iterator(f, l, r);
}
/// @endcond
//! <b>Effects</b>:
//! \code
//! for (; first != last; ++result, ++first)
//! new (static_cast<void*>(&*result))
//! typename iterator_traits<ForwardIterator>::value_type(*first);
//! \endcode
//!
//! <b>Returns</b>: result
//!
//! <b>Note</b>: This function is provided because
//! <i>std::uninitialized_copy</i> from some STL implementations
//! is not compatible with <i>move_iterator</i>
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline F uninitialized_copy_or_move(I f, I l, F r
/// @cond
,typename BOOST_MOVE_BOOST_NS::disable_if< move_detail::is_move_iterator<I> >::type* = 0
/// @endcond
)
{
return std::uninitialized_copy(f, l, r);
}
//! <b>Effects</b>:
//! \code
//! for (; first != last; ++result, ++first)
//! *result = *first;
//! \endcode
//!
//! <b>Returns</b>: result
//!
//! <b>Note</b>: This function is provided because
//! <i>std::uninitialized_copy</i> from some STL implementations
//! is not compatible with <i>move_iterator</i>
template
<typename I, // I models InputIterator
typename F> // F models ForwardIterator
inline F copy_or_move(I f, I l, F r
/// @cond
,typename BOOST_MOVE_BOOST_NS::disable_if< move_detail::is_move_iterator<I> >::type* = 0
/// @endcond
)
{
return std::copy(f, l, r);
}
//! If this trait yields to true
//! (<i>has_trivial_destructor_after_move <T>::value == true</i>)
//! means that if T is used as argument of a move construction/assignment,
//! there is no need to call T's destructor.
//! This optimization tipically is used to improve containers' performance.
//!
//! By default this trait is true if the type has trivial destructor,
//! every class should specialize this trait if it wants to improve performance
//! when inserted in containers.
template <class T>
struct has_trivial_destructor_after_move
: BOOST_MOVE_BOOST_NS::has_trivial_destructor<T>
{};
namespace move_detail {
// Code from Jeffrey Lee Hellrung, many thanks
#ifndef BOOST_NO_RVALUE_REFERENCES
template< class T> struct forward_type { typedef T type; };
#else // #ifndef BOOST_NO_RVALUE_REFERENCES
template< class T>
struct forward_type
{ typedef const T &type; };
template< class T>
struct forward_type< boost::rv<T> >
{ typedef T type; };
#endif // #ifndef BOOST_NO_RVALUE_REFERENCES
// Code from Jeffrey Lee Hellrung, many thanks
template< class T > struct is_rvalue_reference : BOOST_MOVE_BOOST_NS::integral_constant<bool, false> { };
#ifndef BOOST_NO_RVALUE_REFERENCES
template< class T > struct is_rvalue_reference< T&& > : BOOST_MOVE_BOOST_NS::integral_constant<bool, true> { };
#else // #ifndef BOOST_NO_RVALUE_REFERENCES
template< class T > struct is_rvalue_reference< boost::rv<T>& >
: BOOST_MOVE_BOOST_NS::integral_constant<bool, true>
{};
template< class T > struct is_rvalue_reference< const boost::rv<T>& >
: BOOST_MOVE_BOOST_NS::integral_constant<bool, true>
{};
#endif // #ifndef BOOST_NO_RVALUE_REFERENCES
#ifndef BOOST_NO_RVALUE_REFERENCES
template< class T > struct add_rvalue_reference { typedef T&& type; };
#else // #ifndef BOOST_NO_RVALUE_REFERENCES
namespace detail_add_rvalue_reference
{
template< class T
, bool emulation = ::boost::has_move_emulation_enabled<T>::value
, bool rv = ::boost::move_detail::is_rv<T>::value >
struct add_rvalue_reference_impl { typedef T type; };
template< class T, bool emulation>
struct add_rvalue_reference_impl< T, emulation, true > { typedef T & type; };
template< class T, bool rv >
struct add_rvalue_reference_impl< T, true, rv > { typedef ::boost::rv<T>& type; };
} // namespace detail_add_rvalue_reference
template< class T >
struct add_rvalue_reference
: detail_add_rvalue_reference::add_rvalue_reference_impl<T>
{ };
template< class T >
struct add_rvalue_reference<T &>
{ typedef T & type; };
#endif // #ifndef BOOST_NO_RVALUE_REFERENCES
template< class T > struct remove_rvalue_reference { typedef T type; };
#ifndef BOOST_NO_RVALUE_REFERENCES
template< class T > struct remove_rvalue_reference< T&& > { typedef T type; };
#else // #ifndef BOOST_NO_RVALUE_REFERENCES
template< class T > struct remove_rvalue_reference< rv<T> > { typedef T type; };
template< class T > struct remove_rvalue_reference< const rv<T> > { typedef T type; };
template< class T > struct remove_rvalue_reference< volatile rv<T> > { typedef T type; };
template< class T > struct remove_rvalue_reference< const volatile rv<T> > { typedef T type; };
template< class T > struct remove_rvalue_reference< rv<T>& > { typedef T type; };
template< class T > struct remove_rvalue_reference< const rv<T>& > { typedef T type; };
template< class T > struct remove_rvalue_reference< volatile rv<T>& > { typedef T type; };
template< class T > struct remove_rvalue_reference< const volatile rv<T>& >{ typedef T type; };
#endif // #ifndef BOOST_NO_RVALUE_REFERENCES
template <typename T>
typename boost::move_detail::add_rvalue_reference<T>::type declval();
}
// Ideas from Boost.Move review, Jeffrey Lee Hellrung:
//
//- TypeTraits metafunctions is_lvalue_reference, add_lvalue_reference, and remove_lvalue_reference ?
// Perhaps add_reference and remove_reference can be modified so that they behave wrt emulated rvalue
// references the same as wrt real rvalue references, i.e., add_reference< rv<T>& > -> T& rather than
// rv<T>& (since T&& & -> T&).
//
//- Add'l TypeTraits has_[trivial_]move_{constructor,assign}...?
//
//- An as_lvalue(T& x) function, which amounts to an identity operation in C++0x, but strips emulated
// rvalue references in C++03. This may be necessary to prevent "accidental moves".
} //namespace boost {
#if defined BOOST_MSVC
#pragma warning (pop)
#ifdef BOOST_INTERPROCESS_CRT_SECURE_NO_DEPRECATE
#undef BOOST_INTERPROCESS_CRT_SECURE_NO_DEPRECATE
#undef _CRT_SECURE_NO_DEPRECATE
#endif
#ifdef BOOST_INTERPROCESS_SCL_SECURE_NO_WARNINGS
#undef BOOST_INTERPROCESS_SCL_SECURE_NO_WARNINGS
#undef _SCL_SECURE_NO_WARNINGS
#endif
#endif
#endif //#ifndef BOOST_MOVE_MOVE_HPP