boost fails on mac gcc 4.2; refs #11
This commit is contained in:
Marc Wäckerlin
@@ -50,14 +50,369 @@
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# ifdef MRW__OLD_PRE11_COMPILER
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# if __cplusplus<200300L
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# include <boost/shared_ptr.hpp>
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namespace std {
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namespace std {
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// there is no std::shared_ptr in pre C++11 compilers, so we use the
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// one from the boost library as a 1:1 replacement
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template <typename T> class shared_ptr: public boost::shared_ptr<T> {
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// one copied from newer gcc
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template<typename _Ch, typename _Tr, typename _Tp, _Lock_policy _Lp>
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inline std::basic_ostream<_Ch, _Tr>&
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operator<<(std::basic_ostream<_Ch, _Tr>& __os,
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const __shared_ptr<_Tp, _Lp>& __p)
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{
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__os << __p.get();
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return __os;
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}
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template<typename _Del, typename _Tp, _Lock_policy _Lp>
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inline _Del*
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get_deleter(const __shared_ptr<_Tp, _Lp>& __p) noexcept
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{
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#ifdef __GXX_RTTI
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return static_cast<_Del*>(__p._M_get_deleter(typeid(_Del)));
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#else
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return 0;
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#endif
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}
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template<typename _Tp> class shared_ptr : public __shared_ptr<_Tp> {
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public:
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explicit shared_ptr(): boost::shared_ptr<T>() {}
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explicit shared_ptr(T* p): boost::shared_ptr<T>(p) {}
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constexpr shared_ptr() noexcept: __shared_ptr<_Tp>() { }
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shared_ptr(const shared_ptr&) noexcept = default;
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template<typename _Tp1> explicit shared_ptr(_Tp1* __p)
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: __shared_ptr<_Tp>(__p) { }
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template<typename _Tp1, typename _Deleter>
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shared_ptr(_Tp1* __p, _Deleter __d)
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: __shared_ptr<_Tp>(__p, __d) { }
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template<typename _Deleter>
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shared_ptr(nullptr_t __p, _Deleter __d)
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: __shared_ptr<_Tp>(__p, __d) { }
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template<typename _Tp1, typename _Deleter, typename _Alloc>
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shared_ptr(_Tp1* __p, _Deleter __d, _Alloc __a)
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: __shared_ptr<_Tp>(__p, __d, std::move(__a)) { }
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template<typename _Deleter, typename _Alloc>
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shared_ptr(nullptr_t __p, _Deleter __d, _Alloc __a)
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: __shared_ptr<_Tp>(__p, __d, std::move(__a)) { }
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template<typename _Tp1>
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shared_ptr(const shared_ptr<_Tp1>& __r, _Tp* __p) noexcept
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: __shared_ptr<_Tp>(__r, __p) { }
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template<typename _Tp1, typename = typename
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std::enable_if<std::is_convertible<_Tp1*, _Tp*>::value>::type>
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shared_ptr(const shared_ptr<_Tp1>& __r) noexcept
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: __shared_ptr<_Tp>(__r) { }
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shared_ptr(shared_ptr&& __r) noexcept
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: __shared_ptr<_Tp>(std::move(__r)) { }
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template<typename _Tp1, typename = typename
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std::enable_if<std::is_convertible<_Tp1*, _Tp*>::value>::type>
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shared_ptr(shared_ptr<_Tp1>&& __r) noexcept
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: __shared_ptr<_Tp>(std::move(__r)) { }
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template<typename _Tp1>
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explicit shared_ptr(const weak_ptr<_Tp1>& __r)
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: __shared_ptr<_Tp>(__r) { }
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template<typename _Tp1, typename _Del>
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shared_ptr(std::unique_ptr<_Tp1, _Del>&& __r)
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: __shared_ptr<_Tp>(std::move(__r)) { }
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constexpr shared_ptr(nullptr_t __p) noexcept
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: __shared_ptr<_Tp>(__p) { }
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shared_ptr& operator=(const shared_ptr&) noexcept = default;
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template<typename _Tp1>
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shared_ptr& operator=(const shared_ptr<_Tp1>& __r) noexcept {
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this->__shared_ptr<_Tp>::operator=(__r);
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return *this;
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}
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shared_ptr& operator=(shared_ptr&& __r) noexcept {
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this->__shared_ptr<_Tp>::operator=(std::move(__r));
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return *this;
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}
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template<class _Tp1>
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shared_ptr& operator=(shared_ptr<_Tp1>&& __r) noexcept {
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this->__shared_ptr<_Tp>::operator=(std::move(__r));
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return *this;
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}
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template<typename _Tp1, typename _Del>
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shared_ptr& operator=(std::unique_ptr<_Tp1, _Del>&& __r) {
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this->__shared_ptr<_Tp>::operator=(std::move(__r));
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return *this;
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}
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private:
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template<typename _Alloc, typename... _Args>
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shared_ptr(_Sp_make_shared_tag __tag, const _Alloc& __a,
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_Args&&... __args)
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: __shared_ptr<_Tp>(__tag, __a,
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std::forward<_Args>(__args)...) { }
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template<typename _Tp1, typename _Alloc, typename... _Args>
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friend shared_ptr<_Tp1>
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allocate_shared(const _Alloc& __a, _Args&&... __args);
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};
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template<typename _Tp1, typename _Tp2>
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inline bool operator==(const shared_ptr<_Tp1>& __a,
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const shared_ptr<_Tp2>& __b) noexcept {
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return __a.get() == __b.get();
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}
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template<typename _Tp>
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inline bool operator==(const shared_ptr<_Tp>& __a,
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nullptr_t) noexcept {
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return !__a;
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}
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template<typename _Tp>
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inline bool operator==(nullptr_t,
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const shared_ptr<_Tp>& __a) noexcept {
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return !__a;
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}
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template<typename _Tp1, typename _Tp2>
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inline bool operator!=(const shared_ptr<_Tp1>& __a,
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const shared_ptr<_Tp2>& __b) noexcept {
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return __a.get() != __b.get();
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}
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template<typename _Tp>
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inline bool operator!=(const shared_ptr<_Tp>& __a,
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nullptr_t) noexcept {
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return (bool)__a;
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}
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template<typename _Tp>
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inline bool operator!=(nullptr_t,
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const shared_ptr<_Tp>& __a) noexcept {
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return (bool)__a;
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}
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template<typename _Tp1, typename _Tp2>
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inline bool operator<(const shared_ptr<_Tp1>& __a,
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const shared_ptr<_Tp2>& __b) noexcept {
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typedef typename std::common_type<_Tp1*, _Tp2*>::type _CT;
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return std::less<_CT>()(__a.get(), __b.get());
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}
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template<typename _Tp>
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inline bool
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operator<(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
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{ return std::less<_Tp*>()(__a.get(), nullptr); }
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template<typename _Tp>
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inline bool
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operator<(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
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{ return std::less<_Tp*>()(nullptr, __a.get()); }
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template<typename _Tp1, typename _Tp2>
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inline bool
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operator<=(const shared_ptr<_Tp1>& __a,
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const shared_ptr<_Tp2>& __b) noexcept
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{ return !(__b < __a); }
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template<typename _Tp>
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inline bool
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operator<=(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
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{ return !(nullptr < __a); }
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template<typename _Tp>
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inline bool
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operator<=(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
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{ return !(__a < nullptr); }
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template<typename _Tp1, typename _Tp2>
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inline bool
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operator>(const shared_ptr<_Tp1>& __a,
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const shared_ptr<_Tp2>& __b) noexcept
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{ return (__b < __a); }
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template<typename _Tp>
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inline bool
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operator>(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
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{ return std::less<_Tp*>()(nullptr, __a.get()); }
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template<typename _Tp>
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inline bool
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operator>(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
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{ return std::less<_Tp*>()(__a.get(), nullptr); }
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template<typename _Tp1, typename _Tp2>
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inline bool
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operator>=(const shared_ptr<_Tp1>& __a,
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const shared_ptr<_Tp2>& __b) noexcept
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{ return !(__a < __b); }
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template<typename _Tp>
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inline bool
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operator>=(const shared_ptr<_Tp>& __a, nullptr_t) noexcept
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{ return !(__a < nullptr); }
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template<typename _Tp>
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inline bool
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operator>=(nullptr_t, const shared_ptr<_Tp>& __a) noexcept
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{ return !(nullptr < __a); }
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template<typename _Tp>
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struct less<shared_ptr<_Tp>> : public _Sp_less<shared_ptr<_Tp>>
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{ };
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// 20.7.2.2.8 shared_ptr specialized algorithms.
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template<typename _Tp>
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inline void
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swap(shared_ptr<_Tp>& __a, shared_ptr<_Tp>& __b) noexcept
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{ __a.swap(__b); }
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// 20.7.2.2.9 shared_ptr casts.
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template<typename _Tp, typename _Tp1>
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inline shared_ptr<_Tp>
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static_pointer_cast(const shared_ptr<_Tp1>& __r) noexcept
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{ return shared_ptr<_Tp>(__r, static_cast<_Tp*>(__r.get())); }
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template<typename _Tp, typename _Tp1>
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inline shared_ptr<_Tp>
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const_pointer_cast(const shared_ptr<_Tp1>& __r) noexcept
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{ return shared_ptr<_Tp>(__r, const_cast<_Tp*>(__r.get())); }
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template<typename _Tp, typename _Tp1>
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inline shared_ptr<_Tp>
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dynamic_pointer_cast(const shared_ptr<_Tp1>& __r) noexcept
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{
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if (_Tp* __p = dynamic_cast<_Tp*>(__r.get()))
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return shared_ptr<_Tp>(__r, __p);
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return shared_ptr<_Tp>();
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}
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/**
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* @brief A smart pointer with weak semantics.
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*
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* With forwarding constructors and assignment operators.
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*/
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template<typename _Tp>
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class weak_ptr : public __weak_ptr<_Tp>
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{
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public:
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constexpr weak_ptr() noexcept
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: __weak_ptr<_Tp>() { }
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template<typename _Tp1, typename = typename
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std::enable_if<std::is_convertible<_Tp1*, _Tp*>::value>::type>
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weak_ptr(const weak_ptr<_Tp1>& __r) noexcept
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: __weak_ptr<_Tp>(__r) { }
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template<typename _Tp1, typename = typename
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std::enable_if<std::is_convertible<_Tp1*, _Tp*>::value>::type>
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weak_ptr(const shared_ptr<_Tp1>& __r) noexcept
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: __weak_ptr<_Tp>(__r) { }
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template<typename _Tp1>
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weak_ptr&
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operator=(const weak_ptr<_Tp1>& __r) noexcept
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{
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this->__weak_ptr<_Tp>::operator=(__r);
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return *this;
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}
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template<typename _Tp1>
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weak_ptr&
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operator=(const shared_ptr<_Tp1>& __r) noexcept
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{
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this->__weak_ptr<_Tp>::operator=(__r);
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return *this;
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}
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shared_ptr<_Tp>
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lock() const noexcept
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{
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#ifdef __GTHREADS
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if (this->expired())
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return shared_ptr<_Tp>();
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__try
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{
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return shared_ptr<_Tp>(*this);
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}
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__catch(const bad_weak_ptr&)
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{
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return shared_ptr<_Tp>();
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}
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#else
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return this->expired() ? shared_ptr<_Tp>() : shared_ptr<_Tp>(*this);
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#endif
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}
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};
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// 20.7.2.3.6 weak_ptr specialized algorithms.
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template<typename _Tp>
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inline void
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swap(weak_ptr<_Tp>& __a, weak_ptr<_Tp>& __b) noexcept
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{ __a.swap(__b); }
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/// Primary template owner_less
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template<typename _Tp>
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struct owner_less;
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/// Partial specialization of owner_less for shared_ptr.
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template<typename _Tp>
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struct owner_less<shared_ptr<_Tp>>
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: public _Sp_owner_less<shared_ptr<_Tp>, weak_ptr<_Tp>>
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{ };
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/// Partial specialization of owner_less for weak_ptr.
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template<typename _Tp>
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struct owner_less<weak_ptr<_Tp>>
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: public _Sp_owner_less<weak_ptr<_Tp>, shared_ptr<_Tp>>
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{ };
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/**
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* @brief Base class allowing use of member function shared_from_this.
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*/
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template<typename _Tp>
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class enable_shared_from_this
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{
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protected:
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constexpr enable_shared_from_this() noexcept { }
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enable_shared_from_this(const enable_shared_from_this&) noexcept { }
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enable_shared_from_this&
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operator=(const enable_shared_from_this&) noexcept
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{ return *this; }
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~enable_shared_from_this() { }
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public:
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shared_ptr<_Tp>
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shared_from_this()
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{ return shared_ptr<_Tp>(this->_M_weak_this); }
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shared_ptr<const _Tp>
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shared_from_this() const
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{ return shared_ptr<const _Tp>(this->_M_weak_this); }
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private:
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template<typename _Tp1>
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void
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_M_weak_assign(_Tp1* __p, const __shared_count<>& __n) const noexcept
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{ _M_weak_this._M_assign(__p, __n); }
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template<typename _Tp1>
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friend void
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__enable_shared_from_this_helper(const __shared_count<>& __pn,
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const enable_shared_from_this* __pe,
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const _Tp1* __px) noexcept
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{
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if (__pe != 0)
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__pe->_M_weak_assign(const_cast<_Tp1*>(__px), __pn);
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}
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mutable weak_ptr<_Tp> _M_weak_this;
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};
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template<typename _Tp, typename _Alloc, typename... _Args>
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inline shared_ptr<_Tp>
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allocate_shared(const _Alloc& __a, _Args&&... __args)
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{
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return shared_ptr<_Tp>(_Sp_make_shared_tag(), __a,
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std::forward<_Args>(__args)...);
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}
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template<typename _Tp, typename... _Args>
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inline shared_ptr<_Tp>
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make_shared(_Args&&... __args)
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{
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typedef typename std::remove_const<_Tp>::type _Tp_nc;
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return std::allocate_shared<_Tp>(std::allocator<_Tp_nc>(),
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std::forward<_Args>(__args)...);
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}
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template<typename _Tp>
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struct hash<shared_ptr<_Tp>>
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: public __hash_base<size_t, shared_ptr<_Tp>>
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{
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size_t
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operator()(const shared_ptr<_Tp>& __s) const noexcept
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{ return std::hash<_Tp*>()(__s.get()); }
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};
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// auto_ptr is deprecated in favour of unique_ptr, simulate unique_ptr
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template <typename T> class unique_ptr: public std::auto_ptr<T> {
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