feedc0de/boost_bind
1
0
Fork 0
forked from boostorg/bind
Code Pull Requests Activity

Update protect.hpp to use perfect forwarding on C++11

Browse Source
This commit is contained in:
Peter Dimov
2020-06-30 21:31:46 +03:00
parent 8cea63f1c9
commit 3cbcd02965
1 changed files with 40 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

48
include/boost/bind/protect.hpp
View File

@ -2,10 +2,10 @@
#define BOOST_BIND_PROTECT_HPP_INCLUDED #define BOOST_BIND_PROTECT_HPP_INCLUDED
// //
// protect.hpp // protect.hpp
// //
// Copyright (c) 2002 Peter Dimov and Multi Media Ltd. // Copyright 2002, 2020 Peter Dimov
// Copyright (c) 2009 Steven Watanabe // Copyright 2009 Steven Watanabe
// //
// Distributed under the Boost Software License, Version 1.0. (See // Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at // accompanying file LICENSE_1_0.txt or copy at
@ -13,7 +13,8 @@
// //
#include <boost/config.hpp> #include <boost/config.hpp>
#include <boost/detail/workaround.hpp> #include <boost/config/workaround.hpp>
#include <utility>
namespace boost namespace boost
{ {
@ -21,8 +22,41 @@ namespace boost
namespace _bi namespace _bi
{ {
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) && !defined(BOOST_NO_CXX11_DECLTYPE)
template<class F> class protected_bind_t template<class F> class protected_bind_t
{ {
private:
F f_;
public:
typedef typename F::result_type result_type;
explicit protected_bind_t( F f ): f_( f )
{
}
template<class... A> auto operator()( A&&... a ) -> decltype( f_( std::forward<A>(a)... ) )
{
return f_( std::forward<A>(a)... );
}
template<class... A> auto operator()( A&&... a ) const -> decltype( f_( std::forward<A>(a)... ) )
{
return f_( std::forward<A>(a)... );
}
};
#else
template<class F> class protected_bind_t
{
private:
F f_;
public: public:
typedef typename F::result_type result_type; typedef typename F::result_type result_type;
@ -286,12 +320,10 @@ public:
} }
#endif #endif
private:
F f_;
}; };
#endif
} // namespace _bi } // namespace _bi
template<class F> _bi::protected_bind_t<F> protect(F f) template<class F> _bi::protected_bind_t<F> protect(F f)