mirror of
https://github.com/boostorg/move.git
synced 2025-08-04 06:24:28 +02:00
Added test for adl_move_swap.cpp
For move-emulation enabled types, if present, member swap is used, instead of the move-based swap.
This commit is contained in:
Ion Gaztañaga
@@ -764,7 +764,8 @@ Many thanks to all boosters that have tested, reviewed and improved the library.
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[section:release_notes_boost_1_58_00 Boost 1.58 Release]
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[section:release_notes_boost_1_58_00 Boost 1.58 Release]
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* Added `BOOST_MOVE_BASE` utility.
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* Added [macroref BOOST_MOVE_BASE BOOST_MOVE_BASE] utility.
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* Added [funcref boost::adl_move_swap adl_move_swap] utility.
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[endsect]
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[endsect]
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@@ -43,45 +43,181 @@
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#include <boost/move/utility_core.hpp> //for boost::move
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#include <boost/move/utility_core.hpp> //for boost::move
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#if !defined(BOOST_MOVE_DOXYGEN_INVOKED)
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#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
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namespace boost_move_member_swap {
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struct dont_care
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{
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dont_care(...);
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};
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struct private_type
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{
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static private_type p;
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private_type const &operator,(int) const;
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};
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typedef char yes_type;
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struct no_type{ char dummy[2]; };
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template<typename T>
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no_type is_private_type(T const &);
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yes_type is_private_type(private_type const &);
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template <typename Type>
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class has_member_function_named_swap
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{
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struct BaseMixin
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{
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void swap();
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};
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struct Base : public Type, public BaseMixin { Base(); };
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template <typename T, T t> class Helper{};
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template <typename U>
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static no_type deduce(U*, Helper<void (BaseMixin::*)(), &U::swap>* = 0);
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static yes_type deduce(...);
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public:
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static const bool value = sizeof(yes_type) == sizeof(deduce((Base*)(0)));
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};
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template<typename Fun, bool HasFunc>
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struct has_member_swap_impl
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{
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static const bool value = false;
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};
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template<typename Fun>
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struct has_member_swap_impl<Fun, true>
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{
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struct FunWrap : Fun
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{
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FunWrap();
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using Fun::swap;
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private_type swap(dont_care) const;
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};
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static Fun &declval_fun();
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static FunWrap declval_wrap();
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static bool const value =
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sizeof(no_type) == sizeof(is_private_type( (declval_wrap().swap(declval_fun()), 0)) );
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};
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template<typename Fun>
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struct has_member_swap : public has_member_swap_impl
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<Fun, has_member_function_named_swap<Fun>::value>
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{};
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} //namespace boost_move_member_swap
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namespace boost_move_adl_swap{
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namespace boost_move_adl_swap{
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template<class P1, class P2, bool = P1::value>
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struct and_op_impl
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{ static const bool value = false; };
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template<class P1, class P2>
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struct and_op_impl<P1, P2, true>
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{ static const bool value = P2::value; };
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template<class P1, class P2>
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struct and_op
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: and_op_impl<P1, P2>
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{};
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//////
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template<class P1, class P2, bool = P1::value>
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struct and_op_not_impl
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{ static const bool value = false; };
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template<class P1, class P2>
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struct and_op_not_impl<P1, P2, true>
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{ static const bool value = !P2::value; };
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template<class P1, class P2>
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struct and_op_not
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: and_op_not_impl<P1, P2>
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{};
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template<class T>
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template<class T>
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void swap_proxy(T& left, T& right, typename boost::move_detail::enable_if_c<!boost::move_detail::has_move_emulation_enabled_impl<T>::value>::type* = 0)
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void swap_proxy(T& x, T& y, typename boost::move_detail::enable_if_c<!boost::move_detail::has_move_emulation_enabled_impl<T>::value>::type* = 0)
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{
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{
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//use std::swap if argument dependent lookup fails
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//use std::swap if argument dependent lookup fails
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//Use using directive ("using namespace xxx;") instead as some older compilers
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//Use using directive ("using namespace xxx;") instead as some older compilers
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//don't do ADL with using declarations ("using ns::func;").
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//don't do ADL with using declarations ("using ns::func;").
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using namespace std;
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using namespace std;
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swap(left, right);
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swap(x, y);
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}
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}
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template<class T>
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template<class T>
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void swap_proxy(T& left, T& right, typename boost::move_detail::enable_if_c<boost::move_detail::has_move_emulation_enabled_impl<T>::value>::type* = 0)
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void swap_proxy(T& x, T& y
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, typename boost::move_detail::enable_if< and_op_not_impl<boost::move_detail::has_move_emulation_enabled_impl<T>
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, boost_move_member_swap::has_member_swap<T> >
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>::type* = 0)
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{ T t(::boost::move(x)); x = ::boost::move(y); y = ::boost::move(t); }
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template<class T>
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void swap_proxy(T& x, T& y
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, typename boost::move_detail::enable_if< and_op_impl< boost::move_detail::has_move_emulation_enabled_impl<T>
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, boost_move_member_swap::has_member_swap<T> >
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>::type* = 0)
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{ x.swap(y); }
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} //namespace boost_move_adl_swap{
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#else
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namespace boost_move_adl_swap{
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template<class T>
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void swap_proxy(T& x, T& y)
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{
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{
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T tmp(::boost::move(left));
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using std::swap;
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left = ::boost::move(right);
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swap(x, y);
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right = ::boost::move(tmp);
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}
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}
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} //namespace boost_move_adl_swap{
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#endif //#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
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namespace boost_move_adl_swap{
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template<class T, std::size_t N>
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template<class T, std::size_t N>
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void swap_proxy(T (& left)[N], T (& right)[N])
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void swap_proxy(T (& x)[N], T (& y)[N])
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{
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{
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for (std::size_t i = 0; i < N; ++i){
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for (std::size_t i = 0; i < N; ++i){
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::boost_move_adl_swap::swap_proxy(left[i], right[i]);
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::boost_move_adl_swap::swap_proxy(x[i], y[i]);
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}
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}
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}
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}
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} //namespace boost_move_adl_swap {
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} //namespace boost_move_adl_swap {
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#endif //!defined(BOOST_MOVE_DOXYGEN_INVOKED)
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namespace boost{
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namespace boost{
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// adl_move_swap has two template arguments, instead of one, to
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//! Exchanges the values of a and b, using Argument Dependent Lookup (ADL) to select a
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// avoid ambiguity when swapping objects of a Boost type that does
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//! specialized swap function if available. If no specialized swap function is available,
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// not have its own boost::swap overload.
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//! std::swap is used.
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//!
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//! <b>Exception</b>: If T uses Boost.Move's move emulation and the compiler has
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//! no rvalue references then:
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//!
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//! - If T has a <code>T::swap(T&)</code> member, that member is called.
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//! - Otherwise a move-based swap is called, equivalent to:
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//! <code>T t(::boost::move(x)); x = ::boost::move(y); y = ::boost::move(t);</code>.
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template<class T>
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template<class T>
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void adl_move_swap(T& left, T& right)
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void adl_move_swap(T& x, T& y)
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{
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{
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::boost_move_adl_swap::swap_proxy(left, right);
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::boost_move_adl_swap::swap_proxy(x, y);
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}
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}
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} //namespace boost{
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} //namespace boost{
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@@ -103,6 +103,10 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "unique_ptr_types_test", "un
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ProjectSection(ProjectDependencies) = postProject
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ProjectSection(ProjectDependencies) = postProject
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EndProjectSection
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EndProjectSection
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EndProject
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EndProject
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "adl_move_swap", "adl_move_swap.vcproj", "{CD2617A8-79EB-6172-2CE4-26617AA3AC93}"
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ProjectSection(ProjectDependencies) = postProject
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EndProjectSection
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EndProject
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Global
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Global
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GlobalSection(SolutionConfiguration) = preSolution
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GlobalSection(SolutionConfiguration) = preSolution
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Debug = Debug
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Debug = Debug
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@@ -215,6 +219,10 @@ Global
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{C57C28A3-4FE0-6208-BF87-B2B61D3A7675}.Debug.Build.0 = Debug|Win32
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{C57C28A3-4FE0-6208-BF87-B2B61D3A7675}.Debug.Build.0 = Debug|Win32
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{C57C28A3-4FE0-6208-BF87-B2B61D3A7675}.Release.ActiveCfg = Release|Win32
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{C57C28A3-4FE0-6208-BF87-B2B61D3A7675}.Release.ActiveCfg = Release|Win32
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{C57C28A3-4FE0-6208-BF87-B2B61D3A7675}.Release.Build.0 = Release|Win32
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{C57C28A3-4FE0-6208-BF87-B2B61D3A7675}.Release.Build.0 = Release|Win32
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{CD2617A8-79EB-6172-2CE4-26617AA3AC93}.Debug.ActiveCfg = Debug|Win32
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{CD2617A8-79EB-6172-2CE4-26617AA3AC93}.Debug.Build.0 = Debug|Win32
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{CD2617A8-79EB-6172-2CE4-26617AA3AC93}.Release.ActiveCfg = Release|Win32
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{CD2617A8-79EB-6172-2CE4-26617AA3AC93}.Release.Build.0 = Release|Win32
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EndGlobalSection
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EndGlobalSection
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GlobalSection(SolutionItems) = postSolution
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GlobalSection(SolutionItems) = postSolution
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..\..\..\..\boost\move\adl_move_swap.hpp = ..\..\..\..\boost\move\adl_move_swap.hpp
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..\..\..\..\boost\move\adl_move_swap.hpp = ..\..\..\..\boost\move\adl_move_swap.hpp
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134
proj/vc7ide/adl_move_swap.vcproj
Normal file
134
proj/vc7ide/adl_move_swap.vcproj
Normal file
@@ -0,0 +1,134 @@
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<?xml version="1.0" encoding="Windows-1252"?>
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<VisualStudioProject
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ProjectType="Visual C++"
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Version="7.10"
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Name="adl_move_swap"
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ProjectGUID="{CD2617A8-79EB-6172-2CE4-26617AA3AC93}"
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Keyword="Win32Proj">
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<Platforms>
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<Platform
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Name="Win32"/>
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</Platforms>
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<Configurations>
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<Configuration
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Name="Debug|Win32"
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OutputDirectory="../../Bin/Win32/Debug"
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IntermediateDirectory="Debug/move_adl_move_swap"
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ConfigurationType="1"
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CharacterSet="2">
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|
<Tool
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Name="VCCLCompilerTool"
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Optimization="0"
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|
AdditionalIncludeDirectories="../../../.."
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|
PreprocessorDefinitions="WIN32;_DEBUG;_CONSOLE;BOOST_DATE_TIME_NO_LIB"
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MinimalRebuild="TRUE"
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|
BasicRuntimeChecks="3"
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|
RuntimeLibrary="3"
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||||||
|
DisableLanguageExtensions="FALSE"
|
||||||
|
TreatWChar_tAsBuiltInType="TRUE"
|
||||||
|
ForceConformanceInForLoopScope="TRUE"
|
||||||
|
UsePrecompiledHeader="0"
|
||||||
|
WarningLevel="4"
|
||||||
|
Detect64BitPortabilityProblems="TRUE"
|
||||||
|
DebugInformationFormat="3"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCCustomBuildTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCLinkerTool"
|
||||||
|
AdditionalDependencies="winmm.lib"
|
||||||
|
OutputFile="$(OutDir)/move_iterator_test_d.exe"
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||||||
|
LinkIncremental="1"
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||||||
|
AdditionalLibraryDirectories="../../../../stage/lib"
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||||||
|
GenerateDebugInformation="TRUE"
|
||||||
|
ProgramDatabaseFile="$(OutDir)/move_adl_move_swap.pdb"
|
||||||
|
SubSystem="1"
|
||||||
|
TargetMachine="1"
|
||||||
|
FixedBaseAddress="1"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCMIDLTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCPostBuildEventTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCPreBuildEventTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCPreLinkEventTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCResourceCompilerTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCWebServiceProxyGeneratorTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCXMLDataGeneratorTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCWebDeploymentTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCManagedWrapperGeneratorTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
|
||||||
|
</Configuration>
|
||||||
|
<Configuration
|
||||||
|
Name="Release|Win32"
|
||||||
|
OutputDirectory="../../Bin/Win32/Release"
|
||||||
|
IntermediateDirectory="Release/move_adl_move_swap"
|
||||||
|
ConfigurationType="1"
|
||||||
|
CharacterSet="2">
|
||||||
|
<Tool
|
||||||
|
Name="VCCLCompilerTool"
|
||||||
|
AdditionalIncludeDirectories="../../../.."
|
||||||
|
PreprocessorDefinitions="WIN32;NDEBUG;_CONSOLE;BOOST_DATE_TIME_NO_LIB"
|
||||||
|
RuntimeLibrary="2"
|
||||||
|
TreatWChar_tAsBuiltInType="TRUE"
|
||||||
|
ForceConformanceInForLoopScope="FALSE"
|
||||||
|
UsePrecompiledHeader="0"
|
||||||
|
WarningLevel="4"
|
||||||
|
Detect64BitPortabilityProblems="TRUE"
|
||||||
|
DebugInformationFormat="0"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCCustomBuildTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCLinkerTool"
|
||||||
|
AdditionalDependencies="winmm.lib"
|
||||||
|
OutputFile="$(OutDir)/move_adl_move_swap.exe"
|
||||||
|
LinkIncremental="1"
|
||||||
|
AdditionalLibraryDirectories="../../../../stage/lib"
|
||||||
|
GenerateDebugInformation="TRUE"
|
||||||
|
SubSystem="1"
|
||||||
|
OptimizeReferences="2"
|
||||||
|
EnableCOMDATFolding="2"
|
||||||
|
TargetMachine="1"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCMIDLTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCPostBuildEventTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCPreBuildEventTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCPreLinkEventTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCResourceCompilerTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCWebServiceProxyGeneratorTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCXMLDataGeneratorTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCWebDeploymentTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCManagedWrapperGeneratorTool"/>
|
||||||
|
<Tool
|
||||||
|
Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
|
||||||
|
</Configuration>
|
||||||
|
</Configurations>
|
||||||
|
<References>
|
||||||
|
</References>
|
||||||
|
<Files>
|
||||||
|
<Filter
|
||||||
|
Name="Source Files"
|
||||||
|
Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"
|
||||||
|
UniqueIdentifier="{163D8753-4026-0A65-5C56-2BA532AD7FEF}">
|
||||||
|
<File
|
||||||
|
RelativePath="..\..\test\adl_move_swap.cpp">
|
||||||
|
</File>
|
||||||
|
</Filter>
|
||||||
|
</Files>
|
||||||
|
<Globals>
|
||||||
|
</Globals>
|
||||||
|
</VisualStudioProject>
|
||||||
268
test/adl_move_swap.cpp
Normal file
268
test/adl_move_swap.cpp
Normal file
@@ -0,0 +1,268 @@
|
|||||||
|
//////////////////////////////////////////////////////////////////////////////
|
||||||
|
//
|
||||||
|
// (C) Copyright Ion Gaztanaga 2014-2014.
|
||||||
|
// 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/move for documentation.
|
||||||
|
//
|
||||||
|
//////////////////////////////////////////////////////////////////////////////
|
||||||
|
#include <boost/move/detail/config_begin.hpp>
|
||||||
|
#include <boost/move/adl_move_swap.hpp>
|
||||||
|
#include <boost/move/core.hpp>
|
||||||
|
#include <boost/core/lightweight_test.hpp>
|
||||||
|
|
||||||
|
class swap_stats
|
||||||
|
{
|
||||||
|
public:
|
||||||
|
static void reset_stats()
|
||||||
|
{
|
||||||
|
member_swap_calls = 0;
|
||||||
|
friend_swap_calls = 0;
|
||||||
|
move_cnstor_calls = 0;
|
||||||
|
move_assign_calls = 0;
|
||||||
|
copy_cnstor_calls = 0;
|
||||||
|
copy_assign_calls = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
static unsigned int member_swap_calls;
|
||||||
|
static unsigned int friend_swap_calls;
|
||||||
|
static unsigned int move_cnstor_calls;
|
||||||
|
static unsigned int move_assign_calls;
|
||||||
|
static unsigned int copy_cnstor_calls;
|
||||||
|
static unsigned int copy_assign_calls;
|
||||||
|
};
|
||||||
|
|
||||||
|
unsigned int swap_stats::member_swap_calls = 0;
|
||||||
|
unsigned int swap_stats::friend_swap_calls = 0;
|
||||||
|
unsigned int swap_stats::move_cnstor_calls = 0;
|
||||||
|
unsigned int swap_stats::move_assign_calls = 0;
|
||||||
|
unsigned int swap_stats::copy_cnstor_calls = 0;
|
||||||
|
unsigned int swap_stats::copy_assign_calls = 0;
|
||||||
|
|
||||||
|
class movable : public swap_stats
|
||||||
|
{
|
||||||
|
BOOST_MOVABLE_BUT_NOT_COPYABLE(movable)
|
||||||
|
public:
|
||||||
|
movable() {}
|
||||||
|
movable(BOOST_RV_REF(movable)) { ++move_cnstor_calls; }
|
||||||
|
movable & operator=(BOOST_RV_REF(movable)){ ++move_assign_calls; return *this; }
|
||||||
|
friend void swap(movable &, movable &) { ++friend_swap_calls; }
|
||||||
|
};
|
||||||
|
|
||||||
|
class movable_swap_member : public swap_stats
|
||||||
|
{
|
||||||
|
BOOST_MOVABLE_BUT_NOT_COPYABLE(movable_swap_member)
|
||||||
|
public:
|
||||||
|
movable_swap_member() {}
|
||||||
|
movable_swap_member(BOOST_RV_REF(movable_swap_member)) { ++move_cnstor_calls; }
|
||||||
|
movable_swap_member & operator=(BOOST_RV_REF(movable_swap_member)){ ++move_assign_calls; return *this; }
|
||||||
|
void swap(movable_swap_member &) { ++member_swap_calls; }
|
||||||
|
friend void swap(movable_swap_member &, movable_swap_member &) { ++friend_swap_calls; }
|
||||||
|
};
|
||||||
|
|
||||||
|
class copyable : public swap_stats
|
||||||
|
{
|
||||||
|
public:
|
||||||
|
copyable() {}
|
||||||
|
copyable(const copyable &) { ++copy_cnstor_calls; }
|
||||||
|
copyable & operator=(const copyable&) { ++copy_assign_calls; return *this; }
|
||||||
|
void swap(copyable &) { ++member_swap_calls; }
|
||||||
|
friend void swap(copyable &, copyable &) { ++friend_swap_calls; }
|
||||||
|
};
|
||||||
|
|
||||||
|
class no_swap : public swap_stats
|
||||||
|
{
|
||||||
|
private: unsigned m_state;
|
||||||
|
public:
|
||||||
|
explicit no_swap(unsigned i): m_state(i){}
|
||||||
|
no_swap(const no_swap &x) { m_state = x.m_state; ++copy_cnstor_calls; }
|
||||||
|
no_swap & operator=(const no_swap& x) { m_state = x.m_state; ++copy_assign_calls; return *this; }
|
||||||
|
void swap(no_swap &) { ++member_swap_calls; }
|
||||||
|
friend bool operator==(const no_swap &x, const no_swap &y) { return x.m_state == y.m_state; }
|
||||||
|
friend bool operator!=(const no_swap &x, const no_swap &y) { return !(x==y); }
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
int main()
|
||||||
|
{
|
||||||
|
{ //movable
|
||||||
|
movable x, y;
|
||||||
|
swap_stats::reset_stats();
|
||||||
|
::boost::adl_move_swap(x, y);
|
||||||
|
#if defined(BOOST_NO_RVALUE_REFERENCES)
|
||||||
|
//In non rvalue reference compilers,
|
||||||
|
//movable classes with no swap() member uses
|
||||||
|
//boost::move() to implement swap.
|
||||||
|
BOOST_TEST(swap_stats::friend_swap_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::member_swap_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::member_swap_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::move_cnstor_calls == 1);
|
||||||
|
BOOST_TEST(swap_stats::move_assign_calls == 2);
|
||||||
|
BOOST_TEST(swap_stats::copy_cnstor_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::copy_assign_calls == 0);
|
||||||
|
#else
|
||||||
|
//In compilers with rvalue references, this should call friend swap via ADL
|
||||||
|
BOOST_TEST(swap_stats::friend_swap_calls == 1);
|
||||||
|
BOOST_TEST(swap_stats::member_swap_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::member_swap_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::move_cnstor_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::move_assign_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::copy_cnstor_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::copy_assign_calls == 0);
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
{ //movable_swap_member
|
||||||
|
movable_swap_member x, y;
|
||||||
|
swap_stats::reset_stats();
|
||||||
|
::boost::adl_move_swap(x, y);
|
||||||
|
#if defined(BOOST_NO_RVALUE_REFERENCES)
|
||||||
|
//In non rvalue reference compilers,
|
||||||
|
//movable classes with no swap() member uses
|
||||||
|
//boost::move() to implement swap.
|
||||||
|
BOOST_TEST(swap_stats::friend_swap_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::member_swap_calls == 1);
|
||||||
|
BOOST_TEST(swap_stats::move_cnstor_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::move_assign_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::copy_cnstor_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::copy_assign_calls == 0);
|
||||||
|
#else
|
||||||
|
//In compilers with rvalue references, this should call friend swap via ADL
|
||||||
|
BOOST_TEST(swap_stats::friend_swap_calls == 1);
|
||||||
|
BOOST_TEST(swap_stats::member_swap_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::move_cnstor_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::move_assign_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::copy_cnstor_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::copy_assign_calls == 0);
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
{ //copyable
|
||||||
|
copyable x, y;
|
||||||
|
swap_stats::reset_stats();
|
||||||
|
::boost::adl_move_swap(x, y);
|
||||||
|
//This should call friend swap via ADL
|
||||||
|
BOOST_TEST(swap_stats::friend_swap_calls == 1);
|
||||||
|
BOOST_TEST(swap_stats::member_swap_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::move_cnstor_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::move_assign_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::copy_cnstor_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::copy_assign_calls == 0);
|
||||||
|
}
|
||||||
|
{ //no_swap
|
||||||
|
no_swap x(1), y(2), x_back(x), y_back(y);
|
||||||
|
swap_stats::reset_stats();
|
||||||
|
::boost::adl_move_swap(x, y);
|
||||||
|
//This should call std::swap which uses copies
|
||||||
|
BOOST_TEST(swap_stats::friend_swap_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::member_swap_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::move_cnstor_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::move_assign_calls == 0);
|
||||||
|
BOOST_TEST(swap_stats::copy_cnstor_calls == 1);
|
||||||
|
BOOST_TEST(swap_stats::copy_assign_calls == 2);
|
||||||
|
BOOST_TEST(x == y_back);
|
||||||
|
BOOST_TEST(y == x_back);
|
||||||
|
BOOST_TEST(x != y);
|
||||||
|
}
|
||||||
|
return ::boost::report_errors();
|
||||||
|
}
|
||||||
|
#include <boost/move/detail/config_end.hpp>
|
||||||
|
|
||||||
|
/*
|
||||||
|
#include <boost/core/lightweight_test.hpp>
|
||||||
|
|
||||||
|
namespace boost_move_member_swap {
|
||||||
|
|
||||||
|
struct dont_care
|
||||||
|
{
|
||||||
|
dont_care(...);
|
||||||
|
};
|
||||||
|
|
||||||
|
struct private_type
|
||||||
|
{
|
||||||
|
static private_type p;
|
||||||
|
private_type const &operator,(int) const;
|
||||||
|
};
|
||||||
|
|
||||||
|
typedef char yes_type;
|
||||||
|
struct no_type{ char dummy[2]; };
|
||||||
|
|
||||||
|
template<typename T>
|
||||||
|
no_type is_private_type(T const &);
|
||||||
|
|
||||||
|
yes_type is_private_type(private_type const &);
|
||||||
|
|
||||||
|
template <typename Type>
|
||||||
|
class has_member_function_named_swap
|
||||||
|
{
|
||||||
|
struct BaseMixin
|
||||||
|
{
|
||||||
|
void swap();
|
||||||
|
};
|
||||||
|
|
||||||
|
struct Base : public Type, public BaseMixin { Base(); };
|
||||||
|
template <typename T, T t> class Helper{};
|
||||||
|
|
||||||
|
template <typename U>
|
||||||
|
static no_type deduce(U*, Helper<void (BaseMixin::*)(), &U::swap>* = 0);
|
||||||
|
static yes_type deduce(...);
|
||||||
|
|
||||||
|
public:
|
||||||
|
static const bool value = sizeof(yes_type) == sizeof(deduce((Base*)(0)));
|
||||||
|
};
|
||||||
|
|
||||||
|
template<typename Fun, bool HasFunc>
|
||||||
|
struct has_member_swap_impl
|
||||||
|
{
|
||||||
|
static const bool value = false;
|
||||||
|
};
|
||||||
|
|
||||||
|
template<typename Fun>
|
||||||
|
struct has_member_swap_impl<Fun, true>
|
||||||
|
{
|
||||||
|
struct FunWrap : Fun
|
||||||
|
{
|
||||||
|
FunWrap();
|
||||||
|
|
||||||
|
using Fun::swap;
|
||||||
|
private_type swap(dont_care) const;
|
||||||
|
};
|
||||||
|
|
||||||
|
static Fun &declval_fun();
|
||||||
|
static FunWrap declval_wrap();
|
||||||
|
|
||||||
|
static bool const value =
|
||||||
|
sizeof(no_type) == sizeof(is_private_type( (declval_wrap().swap(declval_fun()), 0)) );
|
||||||
|
};
|
||||||
|
|
||||||
|
template<typename Fun>
|
||||||
|
struct has_member_swap : public has_member_swap_impl
|
||||||
|
<Fun, has_member_function_named_swap<Fun>::value>
|
||||||
|
{};
|
||||||
|
|
||||||
|
} //namespace boost_move_member_swap
|
||||||
|
|
||||||
|
class noswap
|
||||||
|
{
|
||||||
|
public:
|
||||||
|
void swap();
|
||||||
|
};
|
||||||
|
|
||||||
|
class noneswap
|
||||||
|
{
|
||||||
|
};
|
||||||
|
|
||||||
|
class yesswap
|
||||||
|
{
|
||||||
|
public:
|
||||||
|
void swap(yesswap&);
|
||||||
|
};
|
||||||
|
|
||||||
|
int main()
|
||||||
|
{
|
||||||
|
BOOST_TEST(!boost_move_member_swap::has_member_swap<noswap>::value);
|
||||||
|
BOOST_TEST(boost_move_member_swap::has_member_swap<yesswap>::value);
|
||||||
|
BOOST_TEST(!boost_move_member_swap::has_member_swap<noneswap>::value);
|
||||||
|
return boost::report_errors();
|
||||||
|
}
|
||||||
|
*/
|
||||||
Reference in New Issue
Block a user