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Diffstat (limited to 'src/boost/libs/move/test/adl_move_swap.cpp')
| -rw-r--r-- | src/boost/libs/move/test/adl_move_swap.cpp | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/src/boost/libs/move/test/adl_move_swap.cpp b/src/boost/libs/move/test/adl_move_swap.cpp new file mode 100644 index 00000000..200c6cb6 --- /dev/null +++ b/src/boost/libs/move/test/adl_move_swap.cpp @@ -0,0 +1,169 @@ +////////////////////////////////////////////////////////////////////////////// +// +// (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_CXX11_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_CXX11_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> |