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Diffstat (limited to 'i686-linux/include/c++/4.4.3/bits/unique_ptr.h')
-rw-r--r-- | i686-linux/include/c++/4.4.3/bits/unique_ptr.h | 450 |
1 files changed, 450 insertions, 0 deletions
diff --git a/i686-linux/include/c++/4.4.3/bits/unique_ptr.h b/i686-linux/include/c++/4.4.3/bits/unique_ptr.h new file mode 100644 index 0000000..b686d11 --- /dev/null +++ b/i686-linux/include/c++/4.4.3/bits/unique_ptr.h @@ -0,0 +1,450 @@ +// unique_ptr implementation -*- C++ -*- + +// Copyright (C) 2008, 2009 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +/** @file unique_ptr.h + * This is an internal header file, included by other library headers. + * You should not attempt to use it directly. + */ + +#ifndef _UNIQUE_PTR_H +#define _UNIQUE_PTR_H 1 + +#ifndef __GXX_EXPERIMENTAL_CXX0X__ +# include <c++0x_warning.h> +#endif + +#include <bits/c++config.h> +#include <debug/debug.h> +#include <type_traits> +#include <utility> +#include <tuple> + +_GLIBCXX_BEGIN_NAMESPACE(std) + + /** + * @addtogroup pointer_abstractions + * @{ + */ + + /// Primary template, default_delete. + template<typename _Tp> + struct default_delete + { + default_delete() { } + + template<typename _Up> + default_delete(const default_delete<_Up>&) { } + + void + operator()(_Tp* __ptr) const + { + static_assert(sizeof(_Tp)>0, + "can't delete pointer to incomplete type"); + delete __ptr; + } + }; + + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // DR 740 - omit specialization for array objects with a compile time length + /// Specialization, default_delete. + template<typename _Tp> + struct default_delete<_Tp[]> + { + void + operator()(_Tp* __ptr) const + { + static_assert(sizeof(_Tp)>0, + "can't delete pointer to incomplete type"); + delete [] __ptr; + } + }; + + /// 20.7.12.2 unique_ptr for single objects. + template <typename _Tp, typename _Tp_Deleter = default_delete<_Tp> > + class unique_ptr + { + typedef std::tuple<_Tp*, _Tp_Deleter> __tuple_type; + typedef __tuple_type unique_ptr::* __unspecified_bool_type; + typedef _Tp* unique_ptr::* __unspecified_pointer_type; + + public: + typedef _Tp* pointer; + typedef _Tp element_type; + typedef _Tp_Deleter deleter_type; + + // Constructors. + unique_ptr() + : _M_t(pointer(), deleter_type()) + { static_assert(!std::is_pointer<deleter_type>::value, + "constructed with null function pointer deleter"); } + + explicit + unique_ptr(pointer __p) + : _M_t(__p, deleter_type()) + { static_assert(!std::is_pointer<deleter_type>::value, + "constructed with null function pointer deleter"); } + + unique_ptr(pointer __p, + typename std::conditional<std::is_reference<deleter_type>::value, + deleter_type, const deleter_type&>::type __d) + : _M_t(__p, __d) { } + + unique_ptr(pointer __p, + typename std::remove_reference<deleter_type>::type&& __d) + : _M_t(std::move(__p), std::move(__d)) + { static_assert(!std::is_reference<deleter_type>::value, + "rvalue deleter bound to reference"); } + + // Move constructors. + unique_ptr(unique_ptr&& __u) + : _M_t(__u.release(), std::forward<deleter_type>(__u.get_deleter())) { } + + template<typename _Up, typename _Up_Deleter> + unique_ptr(unique_ptr<_Up, _Up_Deleter>&& __u) + : _M_t(__u.release(), std::forward<deleter_type>(__u.get_deleter())) + { } + + // Destructor. + ~unique_ptr() { reset(); } + + // Assignment. + unique_ptr& + operator=(unique_ptr&& __u) + { + reset(__u.release()); + get_deleter() = std::move(__u.get_deleter()); + return *this; + } + + template<typename _Up, typename _Up_Deleter> + unique_ptr& + operator=(unique_ptr<_Up, _Up_Deleter>&& __u) + { + reset(__u.release()); + get_deleter() = std::move(__u.get_deleter()); + return *this; + } + + unique_ptr& + operator=(__unspecified_pointer_type) + { + reset(); + return *this; + } + + // Observers. + typename std::add_lvalue_reference<element_type>::type operator*() const + { + _GLIBCXX_DEBUG_ASSERT(get() != 0); + return *get(); + } + + pointer + operator->() const + { + _GLIBCXX_DEBUG_ASSERT(get() != 0); + return get(); + } + + pointer + get() const + { return std::get<0>(_M_t); } + + typename std::add_lvalue_reference<deleter_type>::type + get_deleter() + { return std::get<1>(_M_t); } + + typename std::add_lvalue_reference< + typename std::add_const<deleter_type>::type + >::type + get_deleter() const + { return std::get<1>(_M_t); } + + operator __unspecified_bool_type () const + { return get() == 0 ? 0 : &unique_ptr::_M_t; } + + // Modifiers. + pointer + release() + { + pointer __p = get(); + std::get<0>(_M_t) = 0; + return __p; + } + + void + reset(pointer __p = pointer()) + { + if (__p != get()) + { + get_deleter()(get()); + std::get<0>(_M_t) = __p; + } + } + + void + swap(unique_ptr&& __u) + { + using std::swap; + swap(_M_t, __u._M_t); + } + + // Disable copy from lvalue. + unique_ptr(const unique_ptr&) = delete; + + template<typename _Up, typename _Up_Deleter> + unique_ptr(const unique_ptr<_Up, _Up_Deleter>&) = delete; + + unique_ptr& operator=(const unique_ptr&) = delete; + + template<typename _Up, typename _Up_Deleter> + unique_ptr& operator=(const unique_ptr<_Up, _Up_Deleter>&) = delete; + + private: + __tuple_type _M_t; + }; + + /// 20.7.12.3 unique_ptr for array objects with a runtime length + // [unique.ptr.runtime] + // _GLIBCXX_RESOLVE_LIB_DEFECTS + // DR 740 - omit specialization for array objects with a compile time length + template<typename _Tp, typename _Tp_Deleter> + class unique_ptr<_Tp[], _Tp_Deleter> + { + typedef std::tuple<_Tp*, _Tp_Deleter> __tuple_type; + typedef __tuple_type unique_ptr::* __unspecified_bool_type; + typedef _Tp* unique_ptr::* __unspecified_pointer_type; + + public: + typedef _Tp* pointer; + typedef _Tp element_type; + typedef _Tp_Deleter deleter_type; + + // Constructors. + unique_ptr() + : _M_t(pointer(), deleter_type()) + { static_assert(!std::is_pointer<deleter_type>::value, + "constructed with null function pointer deleter"); } + + explicit + unique_ptr(pointer __p) + : _M_t(__p, deleter_type()) + { static_assert(!std::is_pointer<deleter_type>::value, + "constructed with null function pointer deleter"); } + + unique_ptr(pointer __p, + typename std::conditional<std::is_reference<deleter_type>::value, + deleter_type, const deleter_type&>::type __d) + : _M_t(__p, __d) { } + + unique_ptr(pointer __p, + typename std::remove_reference<deleter_type>::type && __d) + : _M_t(std::move(__p), std::move(__d)) + { static_assert(!std::is_reference<deleter_type>::value, + "rvalue deleter bound to reference"); } + + // Move constructors. + unique_ptr(unique_ptr&& __u) + : _M_t(__u.release(), std::forward<deleter_type>(__u.get_deleter())) { } + + template<typename _Up, typename _Up_Deleter> + unique_ptr(unique_ptr<_Up, _Up_Deleter>&& __u) + : _M_t(__u.release(), std::forward<deleter_type>(__u.get_deleter())) + { } + + // Destructor. + ~unique_ptr() { reset(); } + + // Assignment. + unique_ptr& + operator=(unique_ptr&& __u) + { + reset(__u.release()); + get_deleter() = std::move(__u.get_deleter()); + return *this; + } + + template<typename _Up, typename _Up_Deleter> + unique_ptr& + operator=(unique_ptr<_Up, _Up_Deleter>&& __u) + { + reset(__u.release()); + get_deleter() = std::move(__u.get_deleter()); + return *this; + } + + unique_ptr& + operator=(__unspecified_pointer_type) + { + reset(); + return *this; + } + + // Observers. + typename std::add_lvalue_reference<element_type>::type + operator[](size_t __i) const + { + _GLIBCXX_DEBUG_ASSERT(get() != 0); + return get()[__i]; + } + + pointer + get() const + { return std::get<0>(_M_t); } + + typename std::add_lvalue_reference<deleter_type>::type + get_deleter() + { return std::get<1>(_M_t); } + + typename std::add_lvalue_reference< + typename std::add_const<deleter_type>::type + >::type + get_deleter() const + { return std::get<1>(_M_t); } + + operator __unspecified_bool_type () const + { return get() == 0 ? 0 : &unique_ptr::_M_t; } + + // Modifiers. + pointer + release() + { + pointer __p = get(); + std::get<0>(_M_t) = 0; + return __p; + } + + void + reset(pointer __p = pointer()) + { + if (__p != get()) + { + get_deleter()(get()); + std::get<0>(_M_t) = __p; + } + } + + // DR 821. + template<typename _Up> + void reset(_Up) = delete; + + void + swap(unique_ptr&& __u) + { + using std::swap; + swap(_M_t, __u._M_t); + } + + // Disable copy from lvalue. + unique_ptr(const unique_ptr&) = delete; + unique_ptr& operator=(const unique_ptr&) = delete; + + // Disable construction from convertible pointer types. + // (N2315 - 20.6.5.3.1) + template<typename _Up> + unique_ptr(_Up*, typename + std::conditional<std::is_reference<deleter_type>::value, + deleter_type, const deleter_type&>::type, + typename std::enable_if<std::is_convertible<_Up*, + pointer>::value>::type* = 0) = delete; + + template<typename _Up> + unique_ptr(_Up*, typename std::remove_reference<deleter_type>::type&&, + typename std::enable_if<std::is_convertible<_Up*, + pointer>::value>::type* = 0) = delete; + + template<typename _Up> + explicit + unique_ptr(_Up*, typename std::enable_if<std::is_convertible<_Up*, + pointer>::value>::type* = 0) = delete; + + private: + __tuple_type _M_t; + }; + + template<typename _Tp, typename _Tp_Deleter> + inline void + swap(unique_ptr<_Tp, _Tp_Deleter>& __x, + unique_ptr<_Tp, _Tp_Deleter>& __y) + { __x.swap(__y); } + + template<typename _Tp, typename _Tp_Deleter> + inline void + swap(unique_ptr<_Tp, _Tp_Deleter>&& __x, + unique_ptr<_Tp, _Tp_Deleter>& __y) + { __x.swap(__y); } + + template<typename _Tp, typename _Tp_Deleter> + inline void + swap(unique_ptr<_Tp, _Tp_Deleter>& __x, + unique_ptr<_Tp, _Tp_Deleter>&& __y) + { __x.swap(__y); } + + template<typename _Tp, typename _Tp_Deleter, + typename _Up, typename _Up_Deleter> + inline bool + operator==(const unique_ptr<_Tp, _Tp_Deleter>& __x, + const unique_ptr<_Up, _Up_Deleter>& __y) + { return __x.get() == __y.get(); } + + template<typename _Tp, typename _Tp_Deleter, + typename _Up, typename _Up_Deleter> + inline bool + operator!=(const unique_ptr<_Tp, _Tp_Deleter>& __x, + const unique_ptr<_Up, _Up_Deleter>& __y) + { return !(__x.get() == __y.get()); } + + template<typename _Tp, typename _Tp_Deleter, + typename _Up, typename _Up_Deleter> + inline bool + operator<(const unique_ptr<_Tp, _Tp_Deleter>& __x, + const unique_ptr<_Up, _Up_Deleter>& __y) + { return __x.get() < __y.get(); } + + template<typename _Tp, typename _Tp_Deleter, + typename _Up, typename _Up_Deleter> + inline bool + operator<=(const unique_ptr<_Tp, _Tp_Deleter>& __x, + const unique_ptr<_Up, _Up_Deleter>& __y) + { return !(__y.get() < __x.get()); } + + template<typename _Tp, typename _Tp_Deleter, + typename _Up, typename _Up_Deleter> + inline bool + operator>(const unique_ptr<_Tp, _Tp_Deleter>& __x, + const unique_ptr<_Up, _Up_Deleter>& __y) + { return __y.get() < __x.get(); } + + template<typename _Tp, typename _Tp_Deleter, + typename _Up, typename _Up_Deleter> + inline bool + operator>=(const unique_ptr<_Tp, _Tp_Deleter>& __x, + const unique_ptr<_Up, _Up_Deleter>& __y) + { return !(__x.get() < __y.get()); } + + // @} group pointer_abstractions + +_GLIBCXX_END_NAMESPACE + +#endif /* _UNIQUE_PTR_H */ |