forked from boostorg/bind
128 lines
2.4 KiB
C++
128 lines
2.4 KiB
C++
//
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// bind/mem_fn_template.hpp
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//
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// Do not include this header directly
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//
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// Copyright 2001, 2024 Peter Dimov
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/bind/mem_fn.html for documentation.
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//
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// mf
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template<class R, class T, class... A> class BOOST_MEM_FN_NAME(mf)
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{
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public:
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typedef R result_type;
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private:
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typedef R (BOOST_MEM_FN_CC T::*F) (A...);
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F f_;
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template<class U, class... B> R call(U & u, T const *, B&... b) const
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{
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return (u.*f_)(b...);
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}
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template<class U, class... B> R call(U & u, void const *, B&... b) const
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{
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return (get_pointer(u)->*f_)(b...);
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}
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public:
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explicit BOOST_MEM_FN_NAME(mf)(F f): f_(f) {}
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R operator()(T * p, A... a) const
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{
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return (p->*f_)(a...);
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}
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template<class U> R operator()(U & u, A... a) const
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{
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U const * p = 0;
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return call(u, p, a...);
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}
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template<class U> R operator()(U const & u, A... a) const
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{
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U const * p = 0;
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return call(u, p, a...);
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}
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R operator()(T & t, A... a) const
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{
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return (t.*f_)(a...);
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}
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bool operator==(BOOST_MEM_FN_NAME(mf) const & rhs) const
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{
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return f_ == rhs.f_;
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}
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bool operator!=(BOOST_MEM_FN_NAME(mf) const & rhs) const
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{
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return f_ != rhs.f_;
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}
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};
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// cmf
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template<class R, class T, class... A> class BOOST_MEM_FN_NAME(cmf)
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{
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public:
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typedef R result_type;
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private:
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typedef R (BOOST_MEM_FN_CC T::*F) (A...) const;
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F f_;
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template<class U, class... B> R call(U & u, T const *, B&... b) const
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{
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return (u.*f_)(b...);
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}
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template<class U, class... B> R call(U & u, void const *, B&... b) const
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{
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return (get_pointer(u)->*f_)(b...);
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}
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public:
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explicit BOOST_MEM_FN_NAME(cmf)(F f): f_(f) {}
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R operator()(T const * p, A... a) const
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{
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return (p->*f_)(a...);
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}
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template<class U> R operator()(U const & u, A... a) const
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{
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U const * p = 0;
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return call(u, p, a...);
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}
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R operator()(T const & t, A... a) const
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{
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return (t.*f_)(a...);
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}
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bool operator==(BOOST_MEM_FN_NAME(cmf) const & rhs) const
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{
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return f_ == rhs.f_;
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}
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bool operator!=(BOOST_MEM_FN_NAME(cmf) const & rhs) const
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{
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return f_ != rhs.f_;
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}
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};
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