mirror of
https://github.com/ecency/ecency-mobile.git
synced 2024-12-21 20:31:37 +03:00
293 lines
7.3 KiB
C++
293 lines
7.3 KiB
C++
#ifndef BOOST_SMART_PTR_SHARED_ARRAY_HPP_INCLUDED
|
|
#define BOOST_SMART_PTR_SHARED_ARRAY_HPP_INCLUDED
|
|
|
|
//
|
|
// shared_array.hpp
|
|
//
|
|
// (C) Copyright Greg Colvin and Beman Dawes 1998, 1999.
|
|
// Copyright (c) 2001, 2002, 2012 Peter Dimov
|
|
//
|
|
// 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/smart_ptr/shared_array.htm for documentation.
|
|
//
|
|
|
|
#include <boost/config.hpp> // for broken compiler workarounds
|
|
|
|
#include <memory> // TR1 cyclic inclusion fix
|
|
|
|
#include <boost/assert.hpp>
|
|
#include <boost/checked_delete.hpp>
|
|
|
|
#include <boost/smart_ptr/shared_ptr.hpp>
|
|
#include <boost/smart_ptr/detail/shared_count.hpp>
|
|
#include <boost/smart_ptr/detail/sp_nullptr_t.hpp>
|
|
#include <boost/detail/workaround.hpp>
|
|
|
|
#include <cstddef> // for std::ptrdiff_t
|
|
#include <algorithm> // for std::swap
|
|
#include <functional> // for std::less
|
|
|
|
namespace boost
|
|
{
|
|
|
|
//
|
|
// shared_array
|
|
//
|
|
// shared_array extends shared_ptr to arrays.
|
|
// The array pointed to is deleted when the last shared_array pointing to it
|
|
// is destroyed or reset.
|
|
//
|
|
|
|
template<class T> class shared_array
|
|
{
|
|
private:
|
|
|
|
// Borland 5.5.1 specific workarounds
|
|
typedef checked_array_deleter<T> deleter;
|
|
typedef shared_array<T> this_type;
|
|
|
|
public:
|
|
|
|
typedef T element_type;
|
|
|
|
shared_array() BOOST_NOEXCEPT : px( 0 ), pn()
|
|
{
|
|
}
|
|
|
|
#if !defined( BOOST_NO_CXX11_NULLPTR )
|
|
|
|
shared_array( boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT : px( 0 ), pn()
|
|
{
|
|
}
|
|
|
|
#endif
|
|
|
|
template<class Y>
|
|
explicit shared_array( Y * p ): px( p ), pn( p, checked_array_deleter<Y>() )
|
|
{
|
|
boost::detail::sp_assert_convertible< Y[], T[] >();
|
|
}
|
|
|
|
//
|
|
// Requirements: D's copy constructor must not throw
|
|
//
|
|
// shared_array will release p by calling d(p)
|
|
//
|
|
|
|
template<class Y, class D> shared_array( Y * p, D d ): px( p ), pn( p, d )
|
|
{
|
|
boost::detail::sp_assert_convertible< Y[], T[] >();
|
|
}
|
|
|
|
// As above, but with allocator. A's copy constructor shall not throw.
|
|
|
|
template<class Y, class D, class A> shared_array( Y * p, D d, A a ): px( p ), pn( p, d, a )
|
|
{
|
|
boost::detail::sp_assert_convertible< Y[], T[] >();
|
|
}
|
|
|
|
// generated copy constructor, destructor are fine...
|
|
|
|
#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
|
|
|
|
// ... except in C++0x, move disables the implicit copy
|
|
|
|
shared_array( shared_array const & r ) BOOST_NOEXCEPT : px( r.px ), pn( r.pn )
|
|
{
|
|
}
|
|
|
|
shared_array( shared_array && r ) BOOST_NOEXCEPT : px( r.px ), pn()
|
|
{
|
|
pn.swap( r.pn );
|
|
r.px = 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
// conversion
|
|
|
|
template<class Y>
|
|
#if !defined( BOOST_SP_NO_SP_CONVERTIBLE )
|
|
|
|
shared_array( shared_array<Y> const & r, typename boost::detail::sp_enable_if_convertible< Y[], T[] >::type = boost::detail::sp_empty() )
|
|
|
|
#else
|
|
|
|
shared_array( shared_array<Y> const & r )
|
|
|
|
#endif
|
|
BOOST_NOEXCEPT : px( r.px ), pn( r.pn ) // never throws
|
|
{
|
|
boost::detail::sp_assert_convertible< Y[], T[] >();
|
|
}
|
|
|
|
// aliasing
|
|
|
|
template< class Y >
|
|
shared_array( shared_array<Y> const & r, element_type * p ) BOOST_NOEXCEPT : px( p ), pn( r.pn )
|
|
{
|
|
}
|
|
|
|
// assignment
|
|
|
|
shared_array & operator=( shared_array const & r ) BOOST_NOEXCEPT
|
|
{
|
|
this_type( r ).swap( *this );
|
|
return *this;
|
|
}
|
|
|
|
#if !defined(BOOST_MSVC) || (BOOST_MSVC >= 1400)
|
|
|
|
template<class Y>
|
|
shared_array & operator=( shared_array<Y> const & r ) BOOST_NOEXCEPT
|
|
{
|
|
this_type( r ).swap( *this );
|
|
return *this;
|
|
}
|
|
|
|
#endif
|
|
|
|
#if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
|
|
|
|
shared_array & operator=( shared_array && r ) BOOST_NOEXCEPT
|
|
{
|
|
this_type( static_cast< shared_array && >( r ) ).swap( *this );
|
|
return *this;
|
|
}
|
|
|
|
template<class Y>
|
|
shared_array & operator=( shared_array<Y> && r ) BOOST_NOEXCEPT
|
|
{
|
|
this_type( static_cast< shared_array<Y> && >( r ) ).swap( *this );
|
|
return *this;
|
|
}
|
|
|
|
#endif
|
|
|
|
void reset() BOOST_NOEXCEPT
|
|
{
|
|
this_type().swap( *this );
|
|
}
|
|
|
|
template<class Y> void reset( Y * p ) // Y must be complete
|
|
{
|
|
BOOST_ASSERT( p == 0 || p != px ); // catch self-reset errors
|
|
this_type( p ).swap( *this );
|
|
}
|
|
|
|
template<class Y, class D> void reset( Y * p, D d )
|
|
{
|
|
this_type( p, d ).swap( *this );
|
|
}
|
|
|
|
template<class Y, class D, class A> void reset( Y * p, D d, A a )
|
|
{
|
|
this_type( p, d, a ).swap( *this );
|
|
}
|
|
|
|
template<class Y> void reset( shared_array<Y> const & r, element_type * p )
|
|
{
|
|
this_type( r, p ).swap( *this );
|
|
}
|
|
|
|
T & operator[] (std::ptrdiff_t i) const // never throws (but has a BOOST_ASSERT in it, so not marked with BOOST_NOEXCEPT)
|
|
{
|
|
BOOST_ASSERT(px != 0);
|
|
BOOST_ASSERT(i >= 0);
|
|
return px[i];
|
|
}
|
|
|
|
T * get() const BOOST_NOEXCEPT
|
|
{
|
|
return px;
|
|
}
|
|
|
|
// implicit conversion to "bool"
|
|
#include <boost/smart_ptr/detail/operator_bool.hpp>
|
|
|
|
bool unique() const BOOST_NOEXCEPT
|
|
{
|
|
return pn.unique();
|
|
}
|
|
|
|
long use_count() const BOOST_NOEXCEPT
|
|
{
|
|
return pn.use_count();
|
|
}
|
|
|
|
void swap(shared_array<T> & other) BOOST_NOEXCEPT
|
|
{
|
|
std::swap(px, other.px);
|
|
pn.swap(other.pn);
|
|
}
|
|
|
|
void * _internal_get_deleter( boost::detail::sp_typeinfo const & ti ) const
|
|
{
|
|
return pn.get_deleter( ti );
|
|
}
|
|
|
|
private:
|
|
|
|
template<class Y> friend class shared_array;
|
|
|
|
T * px; // contained pointer
|
|
detail::shared_count pn; // reference counter
|
|
|
|
}; // shared_array
|
|
|
|
template<class T> inline bool operator==(shared_array<T> const & a, shared_array<T> const & b) BOOST_NOEXCEPT
|
|
{
|
|
return a.get() == b.get();
|
|
}
|
|
|
|
template<class T> inline bool operator!=(shared_array<T> const & a, shared_array<T> const & b) BOOST_NOEXCEPT
|
|
{
|
|
return a.get() != b.get();
|
|
}
|
|
|
|
#if !defined( BOOST_NO_CXX11_NULLPTR )
|
|
|
|
template<class T> inline bool operator==( shared_array<T> const & p, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
|
|
{
|
|
return p.get() == 0;
|
|
}
|
|
|
|
template<class T> inline bool operator==( boost::detail::sp_nullptr_t, shared_array<T> const & p ) BOOST_NOEXCEPT
|
|
{
|
|
return p.get() == 0;
|
|
}
|
|
|
|
template<class T> inline bool operator!=( shared_array<T> const & p, boost::detail::sp_nullptr_t ) BOOST_NOEXCEPT
|
|
{
|
|
return p.get() != 0;
|
|
}
|
|
|
|
template<class T> inline bool operator!=( boost::detail::sp_nullptr_t, shared_array<T> const & p ) BOOST_NOEXCEPT
|
|
{
|
|
return p.get() != 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
template<class T> inline bool operator<(shared_array<T> const & a, shared_array<T> const & b) BOOST_NOEXCEPT
|
|
{
|
|
return std::less<T*>()(a.get(), b.get());
|
|
}
|
|
|
|
template<class T> void swap(shared_array<T> & a, shared_array<T> & b) BOOST_NOEXCEPT
|
|
{
|
|
a.swap(b);
|
|
}
|
|
|
|
template< class D, class T > D * get_deleter( shared_array<T> const & p )
|
|
{
|
|
return static_cast< D * >( p._internal_get_deleter( BOOST_SP_TYPEID(D) ) );
|
|
}
|
|
|
|
} // namespace boost
|
|
|
|
#endif // #ifndef BOOST_SMART_PTR_SHARED_ARRAY_HPP_INCLUDED
|