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undo [346]; refs #11

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Marc Wäckerlin 10 years ago
parent d5d9048bcc
commit c638d1c664
1 changed files with 8 additions and 363 deletions
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  1. 367
      src/mrw/checkcxx11.hxx

367
src/mrw/checkcxx11.hxx
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@ -50,369 +50,14 @@
# ifdef MRW__OLD_PRE11_COMPILER
# if __cplusplus<200300L
namespace std {
# include <boost/shared_ptr.hpp>
namespace std {
// there is no std::shared_ptr in pre C++11 compilers, so we use the
// one copied from newer gcc
template<typename _Ch, typename _Tr, typename _Tp, _Lock_policy _Lp>
inline std::basic_ostream<_Ch, _Tr>&
operator<<(std::basic_ostream<_Ch, _Tr>& __os,
const __shared_ptr<_Tp, _Lp>& __p)
{
__os << __p.get();
return __os;
}
template<typename _Del, typename _Tp, _Lock_policy _Lp>
inline _Del*
get_deleter(const __shared_ptr<_Tp, _Lp>& __p) noexcept
{
#ifdef __GXX_RTTI
return static_cast<_Del*>(__p._M_get_deleter(typeid(_Del)));
#else
return 0;
#endif
}
template<typename _Tp> class shared_ptr : public __shared_ptr<_Tp> {
public:
constexpr shared_ptr() noexcept: __shared_ptr<_Tp>() { }
shared_ptr(const shared_ptr&) noexcept = default;
template<typename _Tp1> explicit shared_ptr(_Tp1* __p)
: __shared_ptr<_Tp>(__p) { }
template<typename _Tp1, typename _Deleter>
shared_ptr(_Tp1* __p, _Deleter __d)
: __shared_ptr<_Tp>(__p, __d) { }
template<typename _Deleter>
shared_ptr(nullptr_t __p, _Deleter __d)
: __shared_ptr<_Tp>(__p, __d) { }
template<typename _Tp1, typename _Deleter, typename _Alloc>
shared_ptr(_Tp1* __p, _Deleter __d, _Alloc __a)
: __shared_ptr<_Tp>(__p, __d, std::move(__a)) { }
template<typename _Deleter, typename _Alloc>
shared_ptr(nullptr_t __p, _Deleter __d, _Alloc __a)
: __shared_ptr<_Tp>(__p, __d, std::move(__a)) { }
template<typename _Tp1>
shared_ptr(const shared_ptr<_Tp1>& __r, _Tp* __p) noexcept
: __shared_ptr<_Tp>(__r, __p) { }
template<typename _Tp1, typename = typename
std::enable_if<std::is_convertible<_Tp1*, _Tp*>::value>::type>
shared_ptr(const shared_ptr<_Tp1>& __r) noexcept
: __shared_ptr<_Tp>(__r) { }
shared_ptr(shared_ptr&& __r) noexcept
: __shared_ptr<_Tp>(std::move(__r)) { }
template<typename _Tp1, typename = typename
std::enable_if<std::is_convertible<_Tp1*, _Tp*>::value>::type>
shared_ptr(shared_ptr<_Tp1>&& __r) noexcept
: __shared_ptr<_Tp>(std::move(__r)) { }
template<typename _Tp1>
explicit shared_ptr(const weak_ptr<_Tp1>& __r)
: __shared_ptr<_Tp>(__r) { }
template<typename _Tp1, typename _Del>
shared_ptr(std::unique_ptr<_Tp1, _Del>&& __r)
: __shared_ptr<_Tp>(std::move(__r)) { }
constexpr shared_ptr(nullptr_t __p) noexcept
: __shared_ptr<_Tp>(__p) { }
shared_ptr& operator=(const shared_ptr&) noexcept = default;
template<typename _Tp1>
shared_ptr& operator=(const shared_ptr<_Tp1>& __r) noexcept {
this->__shared_ptr<_Tp>::operator=(__r);
return *this;
}
shared_ptr& operator=(shared_ptr&& __r) noexcept {
this->__shared_ptr<_Tp>::operator=(std::move(__r));
return *this;
}
template<class _Tp1>
shared_ptr& operator=(shared_ptr<_Tp1>&& __r) noexcept {
this->__shared_ptr<_Tp>::operator=(std::move(__r));
return *this;
}
template<typename _Tp1, typename _Del>
shared_ptr& operator=(std::unique_ptr<_Tp1, _Del>&& __r) {
this->__shared_ptr<_Tp>::operator=(std::move(__r));
return *this;
}
private:
template<typename _Alloc, typename... _Args>
shared_ptr(_Sp_make_shared_tag __tag, const _Alloc& __a,
_Args&&... __args)
: __shared_ptr<_Tp>(__tag, __a,
std::forward<_Args>(__args)...) { }
template<typename _Tp1, typename _Alloc, typename... _Args>
friend shared_ptr<_Tp1>
allocate_shared(const _Alloc& __a, _Args&&... __args);
};
template<typename _Tp1, typename _Tp2>
inline bool operator==(const shared_ptr<_Tp1>& __a,
const shared_ptr<_Tp2>& __b) noexcept {
return __a.get() == __b.get();
}
template<typename _Tp>
inline bool operator==(const shared_ptr<_Tp>& __a,
nullptr_t) noexcept {
return !__a;
}
template<typename _Tp>
inline bool operator==(nullptr_t,
const shared_ptr<_Tp>& __a) noexcept {
return !__a;
}
template<typename _Tp1, typename _Tp2>
inline bool operator!=(const shared_ptr<_Tp1>& __a,
const shared_ptr<_Tp2>& __b) noexcept {
return __a.get() != __b.get();
}
template<typename _Tp>
inline bool operator!=(const shared_ptr<_Tp>& __a,
nullptr_t) noexcept {
return (bool)__a;
}
template<typename _Tp>
inline bool operator!=(nullptr_t,
const shared_ptr<_Tp>& __a) noexcept {
return (bool)__a;
}
template<typename _Tp1, typename _Tp2>
inline bool operator<(const shared_ptr<_Tp1>& __a,
const shared_ptr<_Tp2>& __b) noexcept {
typedef typename std::common_type<_Tp1*, _Tp2*>::type _CT;
return std::less<_CT>()(__a.get(), __b.get());
}
template<typename _Tp>
inline bool
operator<(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
{ return std::less<_Tp*>()(__a.get(), nullptr); }
template<typename _Tp>
inline bool
operator<(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
{ return std::less<_Tp*>()(nullptr, __a.get()); }
template<typename _Tp1, typename _Tp2>
inline bool
operator<=(const shared_ptr<_Tp1>& __a,
const shared_ptr<_Tp2>& __b) noexcept
{ return !(__b < __a); }
template<typename _Tp>
inline bool
operator<=(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
{ return !(nullptr < __a); }
template<typename _Tp>
inline bool
operator<=(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
{ return !(__a < nullptr); }
template<typename _Tp1, typename _Tp2>
inline bool
operator>(const shared_ptr<_Tp1>& __a,
const shared_ptr<_Tp2>& __b) noexcept
{ return (__b < __a); }
template<typename _Tp>
inline bool
operator>(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
{ return std::less<_Tp*>()(nullptr, __a.get()); }
template<typename _Tp>
inline bool
operator>(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
{ return std::less<_Tp*>()(__a.get(), nullptr); }
template<typename _Tp1, typename _Tp2>
inline bool
operator>=(const shared_ptr<_Tp1>& __a,
const shared_ptr<_Tp2>& __b) noexcept
{ return !(__a < __b); }
template<typename _Tp>
inline bool
operator>=(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
{ return !(__a < nullptr); }
template<typename _Tp>
inline bool
operator>=(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
{ return !(nullptr < __a); }
template<typename _Tp>
struct less<shared_ptr<_Tp>> : public _Sp_less<shared_ptr<_Tp>>
{ };
// 20.7.2.2.8 shared_ptr specialized algorithms.
template<typename _Tp>
inline void
swap(shared_ptr<_Tp>& __a, shared_ptr<_Tp>& __b) noexcept
{ __a.swap(__b); }
// 20.7.2.2.9 shared_ptr casts.
template<typename _Tp, typename _Tp1>
inline shared_ptr<_Tp>
static_pointer_cast(const shared_ptr<_Tp1>& __r) noexcept
{ return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get())); }
template<typename _Tp, typename _Tp1>
inline shared_ptr<_Tp>
const_pointer_cast(const shared_ptr<_Tp1>& __r) noexcept
{ return shared_ptr<_Tp>(__r, const_cast<_Tp*>(__r.get())); }
template<typename _Tp, typename _Tp1>
inline shared_ptr<_Tp>
dynamic_pointer_cast(const shared_ptr<_Tp1>& __r) noexcept
{
if (_Tp* __p = dynamic_cast<_Tp*>(__r.get()))
return shared_ptr<_Tp>(__r, __p);
return shared_ptr<_Tp>();
}
/**
* @brief A smart pointer with weak semantics.
*
* With forwarding constructors and assignment operators.
*/
template<typename _Tp>
class weak_ptr : public __weak_ptr<_Tp>
{
public:
constexpr weak_ptr() noexcept
: __weak_ptr<_Tp>() { }
template<typename _Tp1, typename = typename
std::enable_if<std::is_convertible<_Tp1*, _Tp*>::value>::type>
weak_ptr(const weak_ptr<_Tp1>& __r) noexcept
: __weak_ptr<_Tp>(__r) { }
template<typename _Tp1, typename = typename
std::enable_if<std::is_convertible<_Tp1*, _Tp*>::value>::type>
weak_ptr(const shared_ptr<_Tp1>& __r) noexcept
: __weak_ptr<_Tp>(__r) { }
template<typename _Tp1>
weak_ptr&
operator=(const weak_ptr<_Tp1>& __r) noexcept
{
this->__weak_ptr<_Tp>::operator=(__r);
return *this;
}
template<typename _Tp1>
weak_ptr&
operator=(const shared_ptr<_Tp1>& __r) noexcept
{
this->__weak_ptr<_Tp>::operator=(__r);
return *this;
}
shared_ptr<_Tp>
lock() const noexcept
{
#ifdef __GTHREADS
if (this->expired())
return shared_ptr<_Tp>();
__try
{
return shared_ptr<_Tp>(*this);
}
__catch(const bad_weak_ptr&)
{
return shared_ptr<_Tp>();
}
#else
return this->expired() ? shared_ptr<_Tp>() : shared_ptr<_Tp>(*this);
#endif
}
};
// 20.7.2.3.6 weak_ptr specialized algorithms.
template<typename _Tp>
inline void
swap(weak_ptr<_Tp>& __a, weak_ptr<_Tp>& __b) noexcept
{ __a.swap(__b); }
/// Primary template owner_less
template<typename _Tp>
struct owner_less;
/// Partial specialization of owner_less for shared_ptr.
template<typename _Tp>
struct owner_less<shared_ptr<_Tp>>
: public _Sp_owner_less<shared_ptr<_Tp>, weak_ptr<_Tp>>
{ };
/// Partial specialization of owner_less for weak_ptr.
template<typename _Tp>
struct owner_less<weak_ptr<_Tp>>
: public _Sp_owner_less<weak_ptr<_Tp>, shared_ptr<_Tp>>
{ };
/**
* @brief Base class allowing use of member function shared_from_this.
*/
template<typename _Tp>
class enable_shared_from_this
{
protected:
constexpr enable_shared_from_this() noexcept { }
enable_shared_from_this(const enable_shared_from_this&) noexcept { }
enable_shared_from_this&
operator=(const enable_shared_from_this&) noexcept
{ return *this; }
~enable_shared_from_this() { }
// one from the boost library as a 1:1 replacement
template <typename T> class shared_ptr: public boost::shared_ptr<T> {
public:
shared_ptr<_Tp>
shared_from_this()
{ return shared_ptr<_Tp>(this->_M_weak_this); }
shared_ptr<const _Tp>
shared_from_this() const
{ return shared_ptr<const _Tp>(this->_M_weak_this); }
private:
template<typename _Tp1>
void
_M_weak_assign(_Tp1* __p, const __shared_count<>& __n) const noexcept
{ _M_weak_this._M_assign(__p, __n); }
template<typename _Tp1>
friend void
__enable_shared_from_this_helper(const __shared_count<>& __pn,
const enable_shared_from_this* __pe,
const _Tp1* __px) noexcept
{
if (__pe != 0)
__pe->_M_weak_assign(const_cast<_Tp1*>(__px), __pn);
}
mutable weak_ptr<_Tp> _M_weak_this;
};
template<typename _Tp, typename _Alloc, typename... _Args>
inline shared_ptr<_Tp>
allocate_shared(const _Alloc& __a, _Args&&... __args)
{
return shared_ptr<_Tp>(_Sp_make_shared_tag(), __a,
std::forward<_Args>(__args)...);
}
template<typename _Tp, typename... _Args>
inline shared_ptr<_Tp>
make_shared(_Args&&... __args)
{
typedef typename std::remove_const<_Tp>::type _Tp_nc;
return std::allocate_shared<_Tp>(std::allocator<_Tp_nc>(),
std::forward<_Args>(__args)...);
}
template<typename _Tp>
struct hash<shared_ptr<_Tp>>
: public __hash_base<size_t, shared_ptr<_Tp>>
{
size_t
operator()(const shared_ptr<_Tp>& __s) const noexcept
{ return std::hash<_Tp*>()(__s.get()); }
explicit shared_ptr(): boost::shared_ptr<T>() {}
explicit shared_ptr(T* p): boost::shared_ptr<T>(p) {}
};
// auto_ptr is deprecated in favour of unique_ptr, simulate unique_ptr
template <typename T> class unique_ptr: public std::auto_ptr<T> {

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