70 lines
1.3 KiB
C++
70 lines
1.3 KiB
C++
#ifndef BOOST_BIND_PROTECT_HPP_INCLUDED
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#define BOOST_BIND_PROTECT_HPP_INCLUDED
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//
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// protect.hpp
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//
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// Copyright 2002, 2020 Peter Dimov
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// Copyright 2009 Steven Watanabe
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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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#include <utility>
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namespace boost
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{
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namespace _bi
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{
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template<class T> struct protect_make_void
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{
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typedef void type;
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};
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template<class F, class E = void> struct protect_result_type
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{
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};
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template<class F> struct protect_result_type< F, typename protect_make_void<typename F::result_type>::type >
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{
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typedef typename F::result_type result_type;
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};
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template<class F> class protected_bind_t: public protect_result_type<F>
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{
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private:
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F f_;
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public:
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explicit protected_bind_t( F f ): f_( f )
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{
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}
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template<class... A> auto operator()( A&&... a ) -> decltype( f_( std::forward<A>(a)... ) )
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{
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return f_( std::forward<A>(a)... );
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}
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template<class... A> auto operator()( A&&... a ) const -> decltype( f_( std::forward<A>(a)... ) )
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{
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return f_( std::forward<A>(a)... );
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}
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};
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} // namespace _bi
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template<class F> _bi::protected_bind_t<F> protect(F f)
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{
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return _bi::protected_bind_t<F>(f);
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}
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} // namespace boost
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#endif // #ifndef BOOST_BIND_PROTECT_HPP_INCLUDED
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