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//////////////////////////////////////////////////////////////////////////////
//
// (C) Copyright Ion Gaztanaga 2006-2014. 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.
//
//////////////////////////////////////////////////////////////////////////////
#ifndef BOOST_MOVE_MAKE_UNIQUE_HPP_INCLUDED
#define BOOST_MOVE_MAKE_UNIQUE_HPP_INCLUDED
#ifndef BOOST_CONFIG_HPP
# include <boost/config.hpp>
#endif
#
#if defined(BOOST_HAS_PRAGMA_ONCE)
# pragma once
#endif
#include <boost/move/detail/config_begin.hpp>
#include <boost/move/detail/workaround.hpp>
#include <boost/move/utility_core.hpp>
#include <boost/move/unique_ptr.hpp>
#include <cstddef> //for std::size_t
#include <boost/move/detail/unique_ptr_meta_utils.hpp>
#ifdef BOOST_NO_CXX11_VARIADIC_TEMPLATES
# include <boost/move/detail/fwd_macros.hpp>
#endif
//!\file
//! Defines "make_unique" functions, which are factories to create instances
//! of unique_ptr depending on the passed arguments.
//!
//! This header can be a bit heavyweight in C++03 compilers due to the use of the
//! preprocessor library, that's why it's a a separate header from <tt>unique_ptr.hpp</tt>
#if !defined(BOOST_MOVE_DOXYGEN_INVOKED)
namespace std { //no namespace versioning in clang+libc++
struct nothrow_t;
} //namespace std {
namespace boost{
namespace move_upmu {
//Compile time switch between
//single element, unknown bound array
//and known bound array
template<class T>
struct unique_ptr_if
{
typedef ::boost::movelib::unique_ptr<T> t_is_not_array;
};
template<class T>
struct unique_ptr_if<T[]>
{
typedef ::boost::movelib::unique_ptr<T[]> t_is_array_of_unknown_bound;
};
template<class T, std::size_t N>
struct unique_ptr_if<T[N]>
{
typedef void t_is_array_of_known_bound;
};
template <int Dummy = 0>
struct nothrow_holder
{
static std::nothrow_t *pnothrow;
};
template <int Dummy>
std::nothrow_t *nothrow_holder<Dummy>::pnothrow;
} //namespace move_upmu {
} //namespace boost{
#endif //!defined(BOOST_MOVE_DOXYGEN_INVOKED)
namespace boost{
namespace movelib {
#if defined(BOOST_MOVE_DOXYGEN_INVOKED) || !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
//! <b>Remarks</b>: This function shall not participate in overload resolution unless T is not an array.
//!
//! <b>Returns</b>: <tt>unique_ptr<T>(new T(std::forward<Args>(args)...))</tt>.
template<class T, class... Args>
inline BOOST_MOVE_DOC1ST(unique_ptr<T>,
typename ::boost::move_upmu::unique_ptr_if<T>::t_is_not_array)
make_unique(BOOST_FWD_REF(Args)... args)
{ return unique_ptr<T>(new T(::boost::forward<Args>(args)...)); }
//! <b>Remarks</b>: This function shall not participate in overload resolution unless T is not an array.
//!
//! <b>Returns</b>: <tt>unique_ptr<T>(new T(std::nothrow)(std::forward<Args>(args)...))</tt>.
template<class T, class... Args>
inline BOOST_MOVE_DOC1ST(unique_ptr<T>,
typename ::boost::move_upmu::unique_ptr_if<T>::t_is_not_array)
make_unique_nothrow(BOOST_FWD_REF(Args)... args)
{ return unique_ptr<T>(new (*boost::move_upmu::nothrow_holder<>::pnothrow)T(::boost::forward<Args>(args)...)); }
#else
#define BOOST_MOVE_MAKE_UNIQUE_CODE(N)\
template<class T BOOST_MOVE_I##N BOOST_MOVE_CLASS##N>\
typename ::boost::move_upmu::unique_ptr_if<T>::t_is_not_array\
make_unique( BOOST_MOVE_UREF##N)\
{ return unique_ptr<T>( new T( BOOST_MOVE_FWD##N ) ); }\
\
template<class T BOOST_MOVE_I##N BOOST_MOVE_CLASS##N>\
typename ::boost::move_upmu::unique_ptr_if<T>::t_is_not_array\
make_unique_nothrow( BOOST_MOVE_UREF##N)\
{ return unique_ptr<T>( new (*boost::move_upmu::nothrow_holder<>::pnothrow)T ( BOOST_MOVE_FWD##N ) ); }\
//
BOOST_MOVE_ITERATE_0TO9(BOOST_MOVE_MAKE_UNIQUE_CODE)
#undef BOOST_MOVE_MAKE_UNIQUE_CODE
#endif
//! <b>Remarks</b>: This function shall not participate in overload resolution unless T is not an array.
//!
//! <b>Returns</b>: <tt>unique_ptr<T>(new T)</tt> (default initialization)
template<class T>
inline BOOST_MOVE_DOC1ST(unique_ptr<T>,
typename ::boost::move_upmu::unique_ptr_if<T>::t_is_not_array)
make_unique_definit()
{
return unique_ptr<T>(new T);
}
//! <b>Remarks</b>: This function shall not participate in overload resolution unless T is not an array.
//!
//! <b>Returns</b>: <tt>unique_ptr<T>(new T(std::nothrow)</tt> (default initialization)
template<class T>
inline BOOST_MOVE_DOC1ST(unique_ptr<T>,
typename ::boost::move_upmu::unique_ptr_if<T>::t_is_not_array)
make_unique_nothrow_definit()
{
return unique_ptr<T>(new (*boost::move_upmu::nothrow_holder<>::pnothrow)T);
}
//! <b>Remarks</b>: This function shall not participate in overload resolution unless T is an array of
//! unknown bound.
//!
//! <b>Returns</b>: <tt>unique_ptr<T>(new remove_extent_t<T>[n]())</tt> (value initialization)
template<class T>
inline BOOST_MOVE_DOC1ST(unique_ptr<T>,
typename ::boost::move_upmu::unique_ptr_if<T>::t_is_array_of_unknown_bound)
make_unique(std::size_t n)
{
typedef typename ::boost::move_upmu::remove_extent<T>::type U;
return unique_ptr<T>(new U[n]());
}
//! <b>Remarks</b>: This function shall not participate in overload resolution unless T is an array of
//! unknown bound.
//!
//! <b>Returns</b>: <tt>unique_ptr<T>(new (std::nothrow)remove_extent_t<T>[n]())</tt> (value initialization)
template<class T>
inline BOOST_MOVE_DOC1ST(unique_ptr<T>,
typename ::boost::move_upmu::unique_ptr_if<T>::t_is_array_of_unknown_bound)
make_unique_nothrow(std::size_t n)
{
typedef typename ::boost::move_upmu::remove_extent<T>::type U;
return unique_ptr<T>(new (*boost::move_upmu::nothrow_holder<>::pnothrow)U[n]());
}
//! <b>Remarks</b>: This function shall not participate in overload resolution unless T is an array of
//! unknown bound.
//!
//! <b>Returns</b>: <tt>unique_ptr<T>(new remove_extent_t<T>[n])</tt> (default initialization)
template<class T>
inline BOOST_MOVE_DOC1ST(unique_ptr<T>,
typename ::boost::move_upmu::unique_ptr_if<T>::t_is_array_of_unknown_bound)
make_unique_definit(std::size_t n)
{
typedef typename ::boost::move_upmu::remove_extent<T>::type U;
return unique_ptr<T>(new U[n]);
}
//! <b>Remarks</b>: This function shall not participate in overload resolution unless T is an array of
//! unknown bound.
//!
//! <b>Returns</b>: <tt>unique_ptr<T>(new (std::nothrow)remove_extent_t<T>[n])</tt> (default initialization)
template<class T>
inline BOOST_MOVE_DOC1ST(unique_ptr<T>,
typename ::boost::move_upmu::unique_ptr_if<T>::t_is_array_of_unknown_bound)
make_unique_nothrow_definit(std::size_t n)
{
typedef typename ::boost::move_upmu::remove_extent<T>::type U;
return unique_ptr<T>(new (*boost::move_upmu::nothrow_holder<>::pnothrow) U[n]);
}
#if !defined(BOOST_NO_CXX11_DELETED_FUNCTIONS)
//! <b>Remarks</b>: This function shall not participate in overload resolution unless T is
//! an array of known bound.
template<class T, class... Args>
inline BOOST_MOVE_DOC1ST(unspecified,
typename ::boost::move_upmu::unique_ptr_if<T>::t_is_array_of_known_bound)
make_unique(BOOST_FWD_REF(Args) ...) = delete;
//! <b>Remarks</b>: This function shall not participate in overload resolution unless T is
//! an array of known bound.
template<class T, class... Args>
inline BOOST_MOVE_DOC1ST(unspecified,
typename ::boost::move_upmu::unique_ptr_if<T>::t_is_array_of_known_bound)
make_unique_definit(BOOST_FWD_REF(Args) ...) = delete;
//! <b>Remarks</b>: This function shall not participate in overload resolution unless T is
//! an array of known bound.
template<class T, class... Args>
inline BOOST_MOVE_DOC1ST(unspecified,
typename ::boost::move_upmu::unique_ptr_if<T>::t_is_array_of_known_bound)
make_unique_nothrow(BOOST_FWD_REF(Args) ...) = delete;
//! <b>Remarks</b>: This function shall not participate in overload resolution unless T is
//! an array of known bound.
template<class T, class... Args>
inline BOOST_MOVE_DOC1ST(unspecified,
typename ::boost::move_upmu::unique_ptr_if<T>::t_is_array_of_known_bound)
make_unique_nothrow_definit(BOOST_FWD_REF(Args) ...) = delete;
#endif
} //namespace movelib {
} //namespace boost{
#include <boost/move/detail/config_end.hpp>
#endif //#ifndef BOOST_MOVE_MAKE_UNIQUE_HPP_INCLUDED
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