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102 lines
2 KiB
C++
102 lines
2 KiB
C++
//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2015-2016.
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// Distributed under the Boost Software License, Version 1.0.
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// (See 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/move for documentation.
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//
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//////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_MOVE_ALGO_PREDICATE_HPP
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#define BOOST_MOVE_ALGO_PREDICATE_HPP
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#include <boost/move/algo/move.hpp>
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#include <boost/move/adl_move_swap.hpp>
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#include <boost/move/algo/detail/basic_op.hpp>
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#include <boost/move/detail/iterator_traits.hpp>
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#include <boost/move/detail/destruct_n.hpp>
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#include <boost/assert.hpp>
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namespace boost {
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namespace movelib {
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template<class Comp>
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struct antistable
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{
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explicit antistable(Comp &comp)
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: m_comp(comp)
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{}
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antistable(const antistable & other)
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: m_comp(other.m_comp)
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{}
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template<class U, class V>
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bool operator()(const U &u, const V & v)
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{ return !m_comp(v, u); }
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const Comp &get() const
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{ return m_comp; }
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private:
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antistable & operator=(const antistable &);
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Comp &m_comp;
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};
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template<class Comp>
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Comp unantistable(Comp comp)
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{ return comp; }
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template<class Comp>
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Comp unantistable(antistable<Comp> comp)
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{ return comp.get(); }
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template <class Comp>
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class negate
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{
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public:
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negate()
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{}
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explicit negate(Comp comp)
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: m_comp(comp)
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{}
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template <class T1, class T2>
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bool operator()(const T1& l, const T2& r)
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{
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return !m_comp(l, r);
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}
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private:
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Comp m_comp;
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};
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template <class Comp>
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class inverse
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{
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public:
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inverse()
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{}
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explicit inverse(Comp comp)
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: m_comp(comp)
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{}
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template <class T1, class T2>
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bool operator()(const T1& l, const T2& r)
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{
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return m_comp(r, l);
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}
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private:
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Comp m_comp;
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};
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} //namespace movelib {
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} //namespace boost {
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#endif //#define BOOST_MOVE_ALGO_PREDICATE_HPP
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