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70 lines
1.3 KiB
C++
70 lines
1.3 KiB
C++
#ifndef BOOST_BIND_ARG_HPP_INCLUDED
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#define BOOST_BIND_ARG_HPP_INCLUDED
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// MS compatible compilers support #pragma once
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#if defined(_MSC_VER) && (_MSC_VER >= 1020)
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# pragma once
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#endif
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//
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// bind/arg.hpp
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//
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// Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
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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/bind.html for documentation.
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//
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#include <boost/config.hpp>
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#include <boost/is_placeholder.hpp>
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namespace boost
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{
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template<bool Eq> struct _arg_eq
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{
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};
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template<> struct _arg_eq<true>
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{
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typedef void type;
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};
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template< int I > struct arg
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{
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BOOST_CONSTEXPR arg()
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{
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}
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template< class T > BOOST_CONSTEXPR arg( T const & /* t */, typename _arg_eq< I == is_placeholder<T>::value >::type * = 0 )
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{
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}
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};
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template< int I > BOOST_CONSTEXPR bool operator==( arg<I> const &, arg<I> const & )
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{
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return true;
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}
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#if !defined( BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION )
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template< int I > struct is_placeholder< arg<I> >
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{
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enum _vt { value = I };
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};
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template< int I > struct is_placeholder< arg<I> (*) () >
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{
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enum _vt { value = I };
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};
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#endif
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} // namespace boost
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#endif // #ifndef BOOST_BIND_ARG_HPP_INCLUDED
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