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Modernize mem_fn_template.hpp

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This commit is contained in:
Peter Dimov
2024-01-04 19:11:35 +02:00
parent 1acf70f920
commit 506838badd
1 changed files with 52 additions and 60 deletions
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112
include/boost/bind/mem_fn_template.hpp
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@ -22,53 +22,46 @@ public:
private:
typedef R (BOOST_MEM_FN_CC T::*F) (A...);
F f_;
template<class U, class... B> R call(U & u, T const *, B&... b) const
{
return (u.*f_)(b...);
}
template<class U, class... B> R call(U & u, void const *, B&... b) const
{
return (get_pointer(u)->*f_)(b...);
}
typedef R (BOOST_MEM_FN_CC T::*Pm) (A...);
Pm pm_;
public:
explicit BOOST_MEM_FN_NAME(mf)(F f): f_(f) {}
explicit BOOST_MEM_FN_NAME(mf)( Pm pm ): pm_( pm ) {}
R operator()(T * p, A... a) const
template<class U,
class Ud = typename _mfi::remove_cvref<U>::type,
class En = typename std::enable_if<
std::is_same<T, Ud>::value || std::is_base_of<T, Ud>::value
>::type
>
R operator()( U&& u, A... a ) const
{
return (p->*f_)(a...);
return (std::forward<U>( u ).*pm_)( std::forward<A>( a )... );
}
template<class U> R operator()(U & u, A... a) const
template<class U,
class Ud = typename _mfi::remove_cvref<U>::type,
class E1 = void,
class En = typename std::enable_if<
!(std::is_same<T, Ud>::value || std::is_base_of<T, Ud>::value)
>::type
>
R operator()( U&& u, A... a ) const
{
U const * p = 0;
return call(u, p, a...);
return (get_pointer( std::forward<U>( u ) )->*pm_)( std::forward<A>( a )... );
}
template<class U> R operator()(U const & u, A... a) const
bool operator==( BOOST_MEM_FN_NAME(mf) const & rhs ) const
{
U const * p = 0;
return call(u, p, a...);
return pm_ == rhs.pm_;
}
R operator()(T & t, A... a) const
bool operator!=( BOOST_MEM_FN_NAME(mf) const & rhs ) const
{
return (t.*f_)(a...);
}
bool operator==(BOOST_MEM_FN_NAME(mf) const & rhs) const
{
return f_ == rhs.f_;
}
bool operator!=(BOOST_MEM_FN_NAME(mf) const & rhs) const
{
return f_ != rhs.f_;
return pm_ != rhs.pm_;
}
};
@ -82,46 +75,45 @@ public:
private:
typedef R (BOOST_MEM_FN_CC T::*F) (A...) const;
F f_;
template<class U, class... B> R call(U & u, T const *, B&... b) const
{
return (u.*f_)(b...);
}
template<class U, class... B> R call(U & u, void const *, B&... b) const
{
return (get_pointer(u)->*f_)(b...);
}
typedef R (BOOST_MEM_FN_CC T::*Pm) (A...) const;
Pm pm_;
public:
explicit BOOST_MEM_FN_NAME(cmf)(F f): f_(f) {}
explicit BOOST_MEM_FN_NAME(cmf)( Pm pm ): pm_( pm ) {}
R operator()(T const * p, A... a) const
template<class U,
class Ud = typename _mfi::remove_cvref<U>::type,
class En = typename std::enable_if<
std::is_same<T, Ud>::value || std::is_base_of<T, Ud>::value
>::type
>
R operator()( U&& u, A... a ) const
{
return (p->*f_)(a...);
return (std::forward<U>( u ).*pm_)( std::forward<A>( a )... );
}
template<class U> R operator()(U const & u, A... a) const
template<class U,
class Ud = typename _mfi::remove_cvref<U>::type,
class E1 = void,
class En = typename std::enable_if<
!(std::is_same<T, Ud>::value || std::is_base_of<T, Ud>::value)
>::type
>
R operator()( U&& u, A... a ) const
{
U const * p = 0;
return call(u, p, a...);
return (get_pointer( std::forward<U>( u ) )->*pm_)( std::forward<A>( a )... );
}
R operator()(T const & t, A... a) const
bool operator==( BOOST_MEM_FN_NAME(cmf) const & rhs ) const
{
return (t.*f_)(a...);
return pm_ == rhs.pm_;
}
bool operator==(BOOST_MEM_FN_NAME(cmf) const & rhs) const
bool operator!=( BOOST_MEM_FN_NAME(cmf) const & rhs ) const
{
return f_ == rhs.f_;
}
bool operator!=(BOOST_MEM_FN_NAME(cmf) const & rhs) const
{
return f_ != rhs.f_;
return pm_ != rhs.pm_;
}
};