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Diffstat (limited to 'contrib/src/boost/move/make_unique.hpp')
| -rw-r--r-- | contrib/src/boost/move/make_unique.hpp | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/contrib/src/boost/move/make_unique.hpp b/contrib/src/boost/move/make_unique.hpp new file mode 100644 index 0000000..bb59ab6 --- /dev/null +++ b/contrib/src/boost/move/make_unique.hpp @@ -0,0 +1,237 @@ +////////////////////////////////////////////////////////////////////////////// +// +// (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 |