mirror of
https://github.com/boostorg/move.git
synced 2025-08-02 05:44:25 +02:00
-> Added new meta-utils that were duplicated in Container & Intrusive.
-> Use some of them to avoid SFINAE instantiation errors in some old compilers. -> Added a macro to static_cast or reinterpret_cast to rv<T> so in the future we can avoid some sanitizer errors when using static_cast
This commit is contained in:
@@ -53,6 +53,12 @@
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#include <boost/move/detail/type_traits.hpp>
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#if 1
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#define BOOST_MOVE_TO_RV_CAST(RV_TYPE, ARG) static_cast<RV_TYPE>(ARG)
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#else
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#define BOOST_MOVE_TO_RV_CAST(RV_TYPE, ARG) reinterpret_cast<RV_TYPE>(ARG)
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#endif
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//Move emulation rv breaks standard aliasing rules so add workarounds for some compilers
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#if defined(__GNUC__) && (__GNUC__ >= 4) && \
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(\
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@@ -101,6 +107,12 @@
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: integral_constant<bool, ::boost::move_detail::is_rv_impl<T>::value >
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{};
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template <class T>
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struct is_not_rv
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{
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static const bool value = !is_rv<T>::value;
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};
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} //namespace move_detail {
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//////////////////////////////////////////////////////////////////////////////
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@@ -113,6 +125,12 @@
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: ::boost::move_detail::has_move_emulation_enabled_impl<T>
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{};
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template<class T>
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struct has_move_emulation_disabled
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{
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static const bool value = !::boost::move_detail::has_move_emulation_enabled_impl<T>::value;
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};
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} //namespace boost {
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#define BOOST_RV_REF(TYPE)\
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@@ -183,7 +201,7 @@
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, ::boost::rv<T>&>::type
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move_return(T& x) BOOST_NOEXCEPT
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{
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return *static_cast< ::boost::rv<T>* >(::boost::move_detail::addressof(x));
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return *BOOST_MOVE_TO_RV_CAST(::boost::rv<T>*, ::boost::move_detail::addressof(x));
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}
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template <class Ret, class T>
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@@ -216,9 +234,9 @@
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BOOST_MOVE_IMPL_NO_COPY_CTOR_OR_ASSIGN(TYPE)\
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public:\
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operator ::boost::rv<TYPE>&() \
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{ return *static_cast< ::boost::rv<TYPE>* >(this); }\
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{ return *BOOST_MOVE_TO_RV_CAST(::boost::rv<TYPE>*, this); }\
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operator const ::boost::rv<TYPE>&() const \
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{ return *static_cast<const ::boost::rv<TYPE>* >(this); }\
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{ return *BOOST_MOVE_TO_RV_CAST(const ::boost::rv<TYPE>*, this); }\
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private:\
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//
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@@ -231,21 +249,21 @@
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#define BOOST_COPYABLE_AND_MOVABLE(TYPE)\
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public:\
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TYPE& operator=(TYPE &t)\
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{ this->operator=(static_cast<const ::boost::rv<TYPE> &>(const_cast<const TYPE &>(t))); return *this;}\
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{ this->operator=(const_cast<const TYPE &>(t)); return *this;}\
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public:\
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operator ::boost::rv<TYPE>&() \
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{ return *static_cast< ::boost::rv<TYPE>* >(this); }\
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{ return *BOOST_MOVE_TO_RV_CAST(::boost::rv<TYPE>*, this); }\
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operator const ::boost::rv<TYPE>&() const \
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{ return *static_cast<const ::boost::rv<TYPE>* >(this); }\
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{ return *BOOST_MOVE_TO_RV_CAST(const ::boost::rv<TYPE>*, this); }\
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private:\
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//
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#define BOOST_COPYABLE_AND_MOVABLE_ALT(TYPE)\
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public:\
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operator ::boost::rv<TYPE>&() \
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{ return *static_cast< ::boost::rv<TYPE>* >(this); }\
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{ return *BOOST_MOVE_TO_RV_CAST(::boost::rv<TYPE>*, this); }\
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operator const ::boost::rv<TYPE>&() const \
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{ return *static_cast<const ::boost::rv<TYPE>* >(this); }\
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{ return *BOOST_MOVE_TO_RV_CAST(const ::boost::rv<TYPE>*, this); }\
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private:\
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//
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@@ -295,6 +313,12 @@
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static const bool value = false;
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};
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template<class T>
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struct has_move_emulation_disabled
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{
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static const bool value = true;
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};
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} //namespace boost{
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//!This macro is used to achieve portable syntax in move
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@@ -33,11 +33,53 @@ template <class T> class rv;
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namespace move_detail {
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//////////////////////////////////////
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// is_different
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//////////////////////////////////////
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template<class T, class U>
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struct is_different
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{
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static const bool value = !is_same<T, U>::value;
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};
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//////////////////////////////////////
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// apply
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//////////////////////////////////////
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template<class F, class Param>
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struct apply
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{
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typedef typename F::template apply<Param>::type type;
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};
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//////////////////////////////////////
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// bool_
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//////////////////////////////////////
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template< bool C_ >
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struct bool_ : integral_constant<bool, C_>
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{
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operator bool() const { return C_; }
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bool operator()() const { return C_; }
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};
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typedef bool_<true> true_;
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typedef bool_<false> false_;
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//////////////////////////////////////
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// nat
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//////////////////////////////////////
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struct nat{};
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//////////////////////////////////////
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// yes_type/no_type
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//////////////////////////////////////
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typedef char yes_type;
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struct no_type
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{
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char _[2];
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};
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//////////////////////////////////////
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// natify
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//////////////////////////////////////
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@@ -86,9 +128,27 @@ struct remove_reference< const rv<T> &>
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typedef T type;
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};
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#endif
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//////////////////////////////////////
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// remove_pointer
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//////////////////////////////////////
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template< class T > struct remove_pointer { typedef T type; };
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template< class T > struct remove_pointer<T*> { typedef T type; };
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template< class T > struct remove_pointer<T* const> { typedef T type; };
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template< class T > struct remove_pointer<T* volatile> { typedef T type; };
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template< class T > struct remove_pointer<T* const volatile> { typedef T type; };
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//////////////////////////////////////
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// add_pointer
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//////////////////////////////////////
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template< class T >
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struct add_pointer
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{
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typedef typename remove_reference<T>::type* type;
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};
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//////////////////////////////////////
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// add_const
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//////////////////////////////////////
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@@ -151,6 +211,19 @@ struct is_lvalue_reference<T&>
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static const bool value = true;
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};
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//////////////////////////////////////
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// identity
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//////////////////////////////////////
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template <class T>
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struct identity
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{
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typedef T type;
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typedef typename add_const_lvalue_reference<T>::type reference;
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reference operator()(reference t)
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{ return t; }
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};
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//////////////////////////////////////
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// is_class_or_union
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//////////////////////////////////////
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@@ -241,9 +314,128 @@ class is_convertible
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#endif
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template<
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bool C
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, typename F1
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, typename F2
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>
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struct eval_if_c
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: if_c<C,F1,F2>::type
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{};
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template<
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typename C
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, typename T1
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, typename T2
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>
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struct eval_if
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: if_<C,T1,T2>::type
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{};
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template<class T, class U, class R = void>
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struct enable_if_convertible
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: enable_if< is_convertible<T, U>, R>
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{};
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template<class T, class U, class R = void>
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struct disable_if_convertible
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: disable_if< is_convertible<T, U>, R>
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{};
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//////////////////////////////////////////////////////////////////////////////
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//
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// has_move_emulation_enabled_impl
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// and_
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//
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//////////////////////////////////////////////////////////////////////////////
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template<bool Bool, class B = true_, class C = true_, class D = true_>
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struct and_impl
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: and_impl<B::value, C, D>
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{};
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template<>
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struct and_impl<true, true_, true_, true_>
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{
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static const bool value = true;
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};
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template<class B, class C, class D>
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struct and_impl<false, B, C, D>
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{
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static const bool value = false;
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};
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template<class A, class B, class C = true_, class D = true_>
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struct and_
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: and_impl<A::value, B, C, D>
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{};
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//////////////////////////////////////////////////////////////////////////////
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//
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// or_
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//
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//////////////////////////////////////////////////////////////////////////////
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template<bool Bool, class B = false_, class C = false_, class D = false_>
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struct or_impl
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: or_impl<B::value, C, D>
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{};
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template<>
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struct or_impl<false, false_, false_, false_>
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{
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static const bool value = false;
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};
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template<class B, class C, class D>
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struct or_impl<true, B, C, D>
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{
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static const bool value = true;
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};
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template<class A, class B, class C = false_, class D = false_>
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struct or_
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: or_impl<A::value, B, C, D>
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{};
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//////////////////////////////////////////////////////////////////////////////
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//
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// not_
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//
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//////////////////////////////////////////////////////////////////////////////
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template<class T>
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struct not_
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{
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static const bool value = !T::value;
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};
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//////////////////////////////////////////////////////////////////////////////
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//
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// enable_if_and / disable_if_and / enable_if_or / disable_if_or
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//
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//////////////////////////////////////////////////////////////////////////////
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template<class R, class A, class B, class C = true_, class D = true_>
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struct enable_if_and
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: enable_if_c< and_<A, B, C, D>::value, R>
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{};
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template<class R, class A, class B, class C = true_, class D = true_>
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struct disable_if_and
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: disable_if_c< and_<A, B, C, D>::value, R>
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{};
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template<class R, class A, class B, class C = false_, class D = false_>
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struct enable_if_or
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: enable_if_c< or_<A, B, C, D>::value, R>
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{};
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template<class R, class A, class B, class C = false_, class D = false_>
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struct disable_if_or
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: disable_if_c< or_<A, B, C, D>::value, R>
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{};
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//////////////////////////////////////////////////////////////////////////////
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//
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// has_move_emulation_enabled_impl
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//
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//////////////////////////////////////////////////////////////////////////////
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template<class T>
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|
@@ -49,16 +49,15 @@ template<typename T1, typename T2, typename T3>
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struct if_ : if_c<0 != T1::value, T2, T3>
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{};
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//enable_if_
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//////////////////////////////////////
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// enable_if_c
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//////////////////////////////////////
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template <bool B, class T = void>
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struct enable_if_c
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{
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typedef T type;
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};
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//////////////////////////////////////
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// enable_if_c
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//////////////////////////////////////
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template <class T>
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struct enable_if_c<false, T> {};
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@@ -68,6 +67,14 @@ struct enable_if_c<false, T> {};
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template <class Cond, class T = void>
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struct enable_if : enable_if_c<Cond::value, T> {};
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//////////////////////////////////////
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// disable_if_c
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//////////////////////////////////////
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template <bool B, class T = void>
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struct disable_if_c
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: enable_if_c<!B, T>
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{};
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//////////////////////////////////////
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// disable_if
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//////////////////////////////////////
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@@ -83,19 +90,14 @@ struct integral_constant
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static const T value = v;
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typedef T value_type;
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typedef integral_constant<T, v> type;
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operator T() const { return value; }
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T operator()() const { return value; }
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};
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typedef integral_constant<bool, true > true_type;
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typedef integral_constant<bool, false > false_type;
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|
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//////////////////////////////////////
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// identity
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//////////////////////////////////////
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template <class T>
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struct identity
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{
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typedef T type;
|
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};
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//////////////////////////////////////
|
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// is_same
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|
@@ -48,20 +48,24 @@
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{ return FWD_FUNCTION(const_cast<const TYPE &>(x)); }\
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\
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template<class BOOST_MOVE_TEMPL_PARAM>\
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typename ::boost::move_detail::enable_if_c\
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< ::boost::move_detail::is_class_or_union<TYPE>::value &&\
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::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM>::value &&\
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!::boost::has_move_emulation_enabled<BOOST_MOVE_TEMPL_PARAM>::value\
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, RETURN_VALUE >::type\
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typename ::boost::move_detail::enable_if_and\
|
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< RETURN_VALUE \
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, ::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM>\
|
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, ::boost::move_detail::is_class_or_union<TYPE>\
|
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, ::boost::has_move_emulation_disabled<BOOST_MOVE_TEMPL_PARAM>\
|
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>::type\
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PUB_FUNCTION(const BOOST_MOVE_TEMPL_PARAM &u)\
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{ return FWD_FUNCTION(u); }\
|
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\
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template<class BOOST_MOVE_TEMPL_PARAM>\
|
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typename ::boost::move_detail::enable_if_c\
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< (!::boost::move_detail::is_class_or_union<BOOST_MOVE_TEMPL_PARAM>::value || \
|
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!::boost::move_detail::is_rv<BOOST_MOVE_TEMPL_PARAM>::value) && \
|
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!::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM>::value \
|
||||
, RETURN_VALUE >::type\
|
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typename ::boost::move_detail::disable_if_or\
|
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< RETURN_VALUE \
|
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, ::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM> \
|
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, ::boost::move_detail::and_ \
|
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< ::boost::move_detail::is_rv<BOOST_MOVE_TEMPL_PARAM> \
|
||||
, ::boost::move_detail::is_class_or_union<BOOST_MOVE_TEMPL_PARAM> \
|
||||
> \
|
||||
>::type\
|
||||
PUB_FUNCTION(const BOOST_MOVE_TEMPL_PARAM &u)\
|
||||
{\
|
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TYPE t(u);\
|
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@@ -115,19 +119,21 @@
|
||||
{ return FWD_FUNCTION(arg1, const_cast<const TYPE &>(x)); }\
|
||||
\
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||||
template<class BOOST_MOVE_TEMPL_PARAM>\
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||||
typename ::boost::move_detail::enable_if_c<\
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::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM>::value &&\
|
||||
!::boost::has_move_emulation_enabled<BOOST_MOVE_TEMPL_PARAM>::value\
|
||||
, RETURN_VALUE >::type\
|
||||
typename ::boost::move_detail::enable_if_and\
|
||||
< RETURN_VALUE \
|
||||
, ::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM>\
|
||||
, ::boost::has_move_emulation_disabled<BOOST_MOVE_TEMPL_PARAM>\
|
||||
>::type\
|
||||
PUB_FUNCTION(ARG1 arg1, const BOOST_MOVE_TEMPL_PARAM &u)\
|
||||
{ return FWD_FUNCTION(arg1, u); }\
|
||||
\
|
||||
template<class BOOST_MOVE_TEMPL_PARAM>\
|
||||
typename ::boost::move_detail::enable_if_c<\
|
||||
!::boost::move_detail::is_rv<BOOST_MOVE_TEMPL_PARAM>::value && \
|
||||
!::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM>::value && \
|
||||
!::boost::move_detail::is_convertible<BOOST_MOVE_TEMPL_PARAM, UNLESS_CONVERTIBLE_TO>::value \
|
||||
, RETURN_VALUE >::type\
|
||||
typename ::boost::move_detail::disable_if_or\
|
||||
< RETURN_VALUE \
|
||||
, ::boost::move_detail::is_rv<BOOST_MOVE_TEMPL_PARAM>\
|
||||
, ::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM>\
|
||||
, ::boost::move_detail::is_convertible<BOOST_MOVE_TEMPL_PARAM, UNLESS_CONVERTIBLE_TO>\
|
||||
>::type\
|
||||
PUB_FUNCTION(ARG1 arg1, const BOOST_MOVE_TEMPL_PARAM &u)\
|
||||
{\
|
||||
TYPE t(u);\
|
||||
@@ -145,10 +151,11 @@
|
||||
{ return FWD_FUNCTION(arg1, ::boost::move(x)); }\
|
||||
\
|
||||
template<class BOOST_MOVE_TEMPL_PARAM>\
|
||||
typename ::boost::move_detail::enable_if_c\
|
||||
< !::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM>::value && \
|
||||
!::boost::move_detail::is_convertible<BOOST_MOVE_TEMPL_PARAM, UNLESS_CONVERTIBLE_TO>::value \
|
||||
, RETURN_VALUE >::type\
|
||||
typename ::boost::move_detail::disable_if_or\
|
||||
< RETURN_VALUE \
|
||||
, ::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM> \
|
||||
, ::boost::move_detail::is_convertible<BOOST_MOVE_TEMPL_PARAM, UNLESS_CONVERTIBLE_TO> \
|
||||
>::type\
|
||||
PUB_FUNCTION(ARG1 arg1, const BOOST_MOVE_TEMPL_PARAM &u)\
|
||||
{\
|
||||
TYPE t(u);\
|
||||
|
@@ -341,23 +341,17 @@ struct is_pointer<T*>
|
||||
{ static const bool value = true; };
|
||||
|
||||
//////////////////////////
|
||||
// add_reference
|
||||
// unvoid_ref
|
||||
//////////////////////////
|
||||
template <typename T> struct unvoid_ref : add_lvalue_reference<T>{};
|
||||
template <> struct unvoid_ref<void> { typedef unvoid_ref & type; };
|
||||
template <> struct unvoid_ref<const void> { typedef unvoid_ref & type; };
|
||||
template <> struct unvoid_ref<volatile void> { typedef unvoid_ref & type; };
|
||||
template <> struct unvoid_ref<const volatile void> { typedef unvoid_ref & type; };
|
||||
|
||||
template <typename T>
|
||||
struct add_reference
|
||||
{ typedef T& type; };
|
||||
|
||||
template<class T>
|
||||
struct add_reference<T&>
|
||||
{ typedef T& type; };
|
||||
|
||||
template<>
|
||||
struct add_reference<void>
|
||||
{ typedef nat &type; };
|
||||
|
||||
template<>
|
||||
struct add_reference<const void>
|
||||
{ typedef const nat &type; };
|
||||
struct add_reference : add_lvalue_reference<T>
|
||||
{};
|
||||
|
||||
//////////////////////////
|
||||
// add_const_reference
|
||||
@@ -370,6 +364,14 @@ template <class T>
|
||||
struct add_const_reference<T&>
|
||||
{ typedef T& type; };
|
||||
|
||||
//////////////////////////
|
||||
// add_const_if_c
|
||||
//////////////////////////
|
||||
template<class T, bool Add>
|
||||
struct add_const_if_c
|
||||
: if_c<Add, typename add_const<T>::type, T>
|
||||
{};
|
||||
|
||||
//////////////////////////
|
||||
// remove_const
|
||||
//////////////////////////
|
||||
|
@@ -47,24 +47,33 @@
|
||||
//////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
template <class T>
|
||||
inline typename ::boost::move_detail::enable_if_c
|
||||
< enable_move_utility_emulation<T>::value && !has_move_emulation_enabled<T>::value, T&>::type
|
||||
inline typename ::boost::move_detail::enable_if_and
|
||||
< T &
|
||||
, enable_move_utility_emulation<T>
|
||||
, has_move_emulation_disabled<T>
|
||||
>::type
|
||||
move(T& x) BOOST_NOEXCEPT
|
||||
{
|
||||
return x;
|
||||
}
|
||||
|
||||
template <class T>
|
||||
inline typename ::boost::move_detail::enable_if_c
|
||||
< enable_move_utility_emulation<T>::value && has_move_emulation_enabled<T>::value, rv<T>&>::type
|
||||
inline typename ::boost::move_detail::enable_if_and
|
||||
< rv<T>&
|
||||
, enable_move_utility_emulation<T>
|
||||
, has_move_emulation_enabled<T>
|
||||
>::type
|
||||
move(T& x) BOOST_NOEXCEPT
|
||||
{
|
||||
return *static_cast<rv<T>* >(::boost::move_detail::addressof(x));
|
||||
return *BOOST_MOVE_TO_RV_CAST(::boost::rv<T>*, ::boost::move_detail::addressof(x) );
|
||||
}
|
||||
|
||||
template <class T>
|
||||
inline typename ::boost::move_detail::enable_if_c
|
||||
< enable_move_utility_emulation<T>::value && has_move_emulation_enabled<T>::value, rv<T>&>::type
|
||||
inline typename ::boost::move_detail::enable_if_and
|
||||
< rv<T>&
|
||||
, enable_move_utility_emulation<T>
|
||||
, has_move_emulation_enabled<T>
|
||||
>::type
|
||||
move(rv<T>& x) BOOST_NOEXCEPT
|
||||
{
|
||||
return x;
|
||||
@@ -77,17 +86,23 @@
|
||||
//////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
template <class T>
|
||||
inline typename ::boost::move_detail::enable_if_c
|
||||
< enable_move_utility_emulation<T>::value && ::boost::move_detail::is_rv<T>::value, T &>::type
|
||||
inline typename ::boost::move_detail::enable_if_and
|
||||
< T &
|
||||
, enable_move_utility_emulation<T>
|
||||
, ::boost::move_detail::is_rv<T>
|
||||
>::type
|
||||
forward(const typename ::boost::move_detail::identity<T>::type &x) BOOST_NOEXCEPT
|
||||
{
|
||||
return const_cast<T&>(x);
|
||||
}
|
||||
|
||||
template <class T>
|
||||
inline typename ::boost::move_detail::enable_if_c
|
||||
< enable_move_utility_emulation<T>::value && !::boost::move_detail::is_rv<T>::value, const T &>::type
|
||||
forward(const typename ::boost::move_detail::identity<T>::type &x) BOOST_NOEXCEPT
|
||||
inline typename ::boost::move_detail::enable_if_and
|
||||
< const T &
|
||||
, enable_move_utility_emulation<T>
|
||||
, ::boost::move_detail::is_not_rv<T>
|
||||
>::type
|
||||
forward(const typename ::boost::move_detail::identity<T>::type &x) BOOST_NOEXCEPT
|
||||
{
|
||||
return x;
|
||||
}
|
||||
@@ -99,22 +114,25 @@
|
||||
//////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
template <class T>
|
||||
inline typename ::boost::move_detail::enable_if_c
|
||||
< enable_move_utility_emulation<T>::value &&
|
||||
::boost::move_detail::is_rv<T>::value
|
||||
, T &>::type
|
||||
inline typename ::boost::move_detail::enable_if_and
|
||||
< T &
|
||||
, enable_move_utility_emulation<T>
|
||||
, ::boost::move_detail::is_rv<T>
|
||||
>::type
|
||||
move_if_not_lvalue_reference(const typename ::boost::move_detail::identity<T>::type &x) BOOST_NOEXCEPT
|
||||
{
|
||||
return const_cast<T&>(x);
|
||||
}
|
||||
|
||||
template <class T>
|
||||
inline typename ::boost::move_detail::enable_if_c
|
||||
< enable_move_utility_emulation<T>::value &&
|
||||
!::boost::move_detail::is_rv<T>::value &&
|
||||
(::boost::move_detail::is_lvalue_reference<T>::value ||
|
||||
!has_move_emulation_enabled<T>::value)
|
||||
, typename ::boost::move_detail::add_lvalue_reference<T>::type
|
||||
inline typename ::boost::move_detail::enable_if_and
|
||||
< typename ::boost::move_detail::add_lvalue_reference<T>::type
|
||||
, enable_move_utility_emulation<T>
|
||||
, ::boost::move_detail::is_not_rv<T>
|
||||
, ::boost::move_detail::or_
|
||||
< ::boost::move_detail::is_lvalue_reference<T>
|
||||
, has_move_emulation_disabled<T>
|
||||
>
|
||||
>::type
|
||||
move_if_not_lvalue_reference(typename ::boost::move_detail::remove_reference<T>::type &x) BOOST_NOEXCEPT
|
||||
{
|
||||
@@ -122,12 +140,14 @@
|
||||
}
|
||||
|
||||
template <class T>
|
||||
inline typename ::boost::move_detail::enable_if_c
|
||||
< enable_move_utility_emulation<T>::value &&
|
||||
!::boost::move_detail::is_rv<T>::value &&
|
||||
(!::boost::move_detail::is_lvalue_reference<T>::value &&
|
||||
has_move_emulation_enabled<T>::value)
|
||||
, rv<T>&
|
||||
inline typename ::boost::move_detail::enable_if_and
|
||||
< rv<T>&
|
||||
, enable_move_utility_emulation<T>
|
||||
, ::boost::move_detail::is_not_rv<T>
|
||||
, ::boost::move_detail::and_
|
||||
< ::boost::move_detail::not_< ::boost::move_detail::is_lvalue_reference<T> >
|
||||
, has_move_emulation_enabled<T>
|
||||
>
|
||||
>::type
|
||||
move_if_not_lvalue_reference(typename ::boost::move_detail::remove_reference<T>::type &x) BOOST_NOEXCEPT
|
||||
{
|
||||
|
Reference in New Issue
Block a user