mirror of
https://github.com/yuzu-emu/ext-boost.git
synced 2024-12-22 18:25:36 +00:00
312 lines
10 KiB
C++
312 lines
10 KiB
C++
//////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// (C) Copyright Ion Gaztanaga 2012-2012.
|
|
// Distributed under the Boost Software License, Version 1.0.
|
|
// (See accompanying file LICENSE_1_0.txt or copy at
|
|
// http://www.boost.org/LICENSE_1_0.txt)
|
|
//
|
|
// See http://www.boost.org/libs/move for documentation.
|
|
//
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
//! \file
|
|
|
|
#ifndef BOOST_MOVE_ITERATOR_HPP
|
|
#define BOOST_MOVE_ITERATOR_HPP
|
|
|
|
#ifndef BOOST_CONFIG_HPP
|
|
# include <boost/config.hpp>
|
|
#endif
|
|
#
|
|
#if defined(BOOST_HAS_PRAGMA_ONCE)
|
|
# pragma once
|
|
#endif
|
|
|
|
#include <boost/move/detail/config_begin.hpp>
|
|
#include <boost/move/detail/workaround.hpp> //forceinline
|
|
#include <boost/move/detail/iterator_traits.hpp>
|
|
#include <boost/move/utility_core.hpp>
|
|
|
|
namespace boost {
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// move_iterator
|
|
//
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
//! Class template move_iterator is an iterator adaptor with the same behavior
|
|
//! as the underlying iterator except that its dereference operator implicitly
|
|
//! converts the value returned by the underlying iterator's dereference operator
|
|
//! to an rvalue reference. Some generic algorithms can be called with move
|
|
//! iterators to replace copying with moving.
|
|
template <class It>
|
|
class move_iterator
|
|
{
|
|
public:
|
|
typedef It iterator_type;
|
|
typedef typename boost::movelib::iterator_traits<iterator_type>::value_type value_type;
|
|
#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) || defined(BOOST_MOVE_DOXYGEN_INVOKED)
|
|
typedef value_type && reference;
|
|
#else
|
|
typedef typename ::boost::move_detail::if_
|
|
< ::boost::has_move_emulation_enabled<value_type>
|
|
, ::boost::rv<value_type>&
|
|
, value_type & >::type reference;
|
|
#endif
|
|
typedef It pointer;
|
|
typedef typename boost::movelib::iterator_traits<iterator_type>::difference_type difference_type;
|
|
typedef typename boost::movelib::iterator_traits<iterator_type>::iterator_category iterator_category;
|
|
|
|
BOOST_MOVE_FORCEINLINE move_iterator()
|
|
: m_it()
|
|
{}
|
|
|
|
BOOST_MOVE_FORCEINLINE explicit move_iterator(const It &i)
|
|
: m_it(i)
|
|
{}
|
|
|
|
template <class U>
|
|
BOOST_MOVE_FORCEINLINE move_iterator(const move_iterator<U>& u)
|
|
: m_it(u.m_it)
|
|
{}
|
|
|
|
BOOST_MOVE_FORCEINLINE reference operator*() const
|
|
{
|
|
#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES) || defined(BOOST_MOVE_OLD_RVALUE_REF_BINDING_RULES)
|
|
return *m_it;
|
|
#else
|
|
return ::boost::move(*m_it);
|
|
#endif
|
|
}
|
|
|
|
BOOST_MOVE_FORCEINLINE pointer operator->() const
|
|
{ return m_it; }
|
|
|
|
BOOST_MOVE_FORCEINLINE move_iterator& operator++()
|
|
{ ++m_it; return *this; }
|
|
|
|
BOOST_MOVE_FORCEINLINE move_iterator<iterator_type> operator++(int)
|
|
{ move_iterator<iterator_type> tmp(*this); ++(*this); return tmp; }
|
|
|
|
BOOST_MOVE_FORCEINLINE move_iterator& operator--()
|
|
{ --m_it; return *this; }
|
|
|
|
BOOST_MOVE_FORCEINLINE move_iterator<iterator_type> operator--(int)
|
|
{ move_iterator<iterator_type> tmp(*this); --(*this); return tmp; }
|
|
|
|
move_iterator<iterator_type> operator+ (difference_type n) const
|
|
{ return move_iterator<iterator_type>(m_it + n); }
|
|
|
|
BOOST_MOVE_FORCEINLINE move_iterator& operator+=(difference_type n)
|
|
{ m_it += n; return *this; }
|
|
|
|
BOOST_MOVE_FORCEINLINE move_iterator<iterator_type> operator- (difference_type n) const
|
|
{ return move_iterator<iterator_type>(m_it - n); }
|
|
|
|
BOOST_MOVE_FORCEINLINE move_iterator& operator-=(difference_type n)
|
|
{ m_it -= n; return *this; }
|
|
|
|
BOOST_MOVE_FORCEINLINE reference operator[](difference_type n) const
|
|
{
|
|
#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES) || defined(BOOST_MOVE_OLD_RVALUE_REF_BINDING_RULES)
|
|
return m_it[n];
|
|
#else
|
|
return ::boost::move(m_it[n]);
|
|
#endif
|
|
}
|
|
|
|
BOOST_MOVE_FORCEINLINE friend bool operator==(const move_iterator& x, const move_iterator& y)
|
|
{ return x.m_it == y.m_it; }
|
|
|
|
BOOST_MOVE_FORCEINLINE friend bool operator!=(const move_iterator& x, const move_iterator& y)
|
|
{ return x.m_it != y.m_it; }
|
|
|
|
BOOST_MOVE_FORCEINLINE friend bool operator< (const move_iterator& x, const move_iterator& y)
|
|
{ return x.m_it < y.m_it; }
|
|
|
|
BOOST_MOVE_FORCEINLINE friend bool operator<=(const move_iterator& x, const move_iterator& y)
|
|
{ return x.m_it <= y.m_it; }
|
|
|
|
BOOST_MOVE_FORCEINLINE friend bool operator> (const move_iterator& x, const move_iterator& y)
|
|
{ return x.m_it > y.m_it; }
|
|
|
|
BOOST_MOVE_FORCEINLINE friend bool operator>=(const move_iterator& x, const move_iterator& y)
|
|
{ return x.m_it >= y.m_it; }
|
|
|
|
BOOST_MOVE_FORCEINLINE friend difference_type operator-(const move_iterator& x, const move_iterator& y)
|
|
{ return x.m_it - y.m_it; }
|
|
|
|
BOOST_MOVE_FORCEINLINE friend move_iterator operator+(difference_type n, const move_iterator& x)
|
|
{ return move_iterator(x.m_it + n); }
|
|
|
|
private:
|
|
It m_it;
|
|
};
|
|
|
|
//is_move_iterator
|
|
namespace move_detail {
|
|
|
|
template <class I>
|
|
struct is_move_iterator
|
|
{
|
|
static const bool value = false;
|
|
};
|
|
|
|
template <class I>
|
|
struct is_move_iterator< ::boost::move_iterator<I> >
|
|
{
|
|
static const bool value = true;
|
|
};
|
|
|
|
} //namespace move_detail {
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// move_iterator
|
|
//
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
//!
|
|
//! <b>Returns</b>: move_iterator<It>(i).
|
|
template<class It>
|
|
inline move_iterator<It> make_move_iterator(const It &it)
|
|
{ return move_iterator<It>(it); }
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// back_move_insert_iterator
|
|
//
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
//! A move insert iterator that move constructs elements at the
|
|
//! back of a container
|
|
template <typename C> // C models Container
|
|
class back_move_insert_iterator
|
|
{
|
|
C* container_m;
|
|
|
|
public:
|
|
typedef C container_type;
|
|
typedef typename C::value_type value_type;
|
|
typedef typename C::reference reference;
|
|
typedef typename C::pointer pointer;
|
|
typedef typename C::difference_type difference_type;
|
|
typedef std::output_iterator_tag iterator_category;
|
|
|
|
explicit back_move_insert_iterator(C& x) : container_m(&x) { }
|
|
|
|
back_move_insert_iterator& operator=(reference x)
|
|
{ container_m->push_back(boost::move(x)); return *this; }
|
|
|
|
back_move_insert_iterator& operator=(BOOST_RV_REF(value_type) x)
|
|
{ reference rx = x; return this->operator=(rx); }
|
|
|
|
back_move_insert_iterator& operator*() { return *this; }
|
|
back_move_insert_iterator& operator++() { return *this; }
|
|
back_move_insert_iterator& operator++(int) { return *this; }
|
|
};
|
|
|
|
//!
|
|
//! <b>Returns</b>: back_move_insert_iterator<C>(x).
|
|
template <typename C> // C models Container
|
|
inline back_move_insert_iterator<C> back_move_inserter(C& x)
|
|
{
|
|
return back_move_insert_iterator<C>(x);
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// front_move_insert_iterator
|
|
//
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
//! A move insert iterator that move constructs elements int the
|
|
//! front of a container
|
|
template <typename C> // C models Container
|
|
class front_move_insert_iterator
|
|
{
|
|
C* container_m;
|
|
|
|
public:
|
|
typedef C container_type;
|
|
typedef typename C::value_type value_type;
|
|
typedef typename C::reference reference;
|
|
typedef typename C::pointer pointer;
|
|
typedef typename C::difference_type difference_type;
|
|
typedef std::output_iterator_tag iterator_category;
|
|
|
|
explicit front_move_insert_iterator(C& x) : container_m(&x) { }
|
|
|
|
front_move_insert_iterator& operator=(reference x)
|
|
{ container_m->push_front(boost::move(x)); return *this; }
|
|
|
|
front_move_insert_iterator& operator=(BOOST_RV_REF(value_type) x)
|
|
{ reference rx = x; return this->operator=(rx); }
|
|
|
|
front_move_insert_iterator& operator*() { return *this; }
|
|
front_move_insert_iterator& operator++() { return *this; }
|
|
front_move_insert_iterator& operator++(int) { return *this; }
|
|
};
|
|
|
|
//!
|
|
//! <b>Returns</b>: front_move_insert_iterator<C>(x).
|
|
template <typename C> // C models Container
|
|
inline front_move_insert_iterator<C> front_move_inserter(C& x)
|
|
{
|
|
return front_move_insert_iterator<C>(x);
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// insert_move_iterator
|
|
//
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
template <typename C> // C models Container
|
|
class move_insert_iterator
|
|
{
|
|
C* container_m;
|
|
typename C::iterator pos_;
|
|
|
|
public:
|
|
typedef C container_type;
|
|
typedef typename C::value_type value_type;
|
|
typedef typename C::reference reference;
|
|
typedef typename C::pointer pointer;
|
|
typedef typename C::difference_type difference_type;
|
|
typedef std::output_iterator_tag iterator_category;
|
|
|
|
explicit move_insert_iterator(C& x, typename C::iterator pos)
|
|
: container_m(&x), pos_(pos)
|
|
{}
|
|
|
|
move_insert_iterator& operator=(reference x)
|
|
{
|
|
pos_ = container_m->insert(pos_, ::boost::move(x));
|
|
++pos_;
|
|
return *this;
|
|
}
|
|
|
|
move_insert_iterator& operator=(BOOST_RV_REF(value_type) x)
|
|
{ reference rx = x; return this->operator=(rx); }
|
|
|
|
move_insert_iterator& operator*() { return *this; }
|
|
move_insert_iterator& operator++() { return *this; }
|
|
move_insert_iterator& operator++(int) { return *this; }
|
|
};
|
|
|
|
//!
|
|
//! <b>Returns</b>: move_insert_iterator<C>(x, it).
|
|
template <typename C> // C models Container
|
|
inline move_insert_iterator<C> move_inserter(C& x, typename C::iterator it)
|
|
{
|
|
return move_insert_iterator<C>(x, it);
|
|
}
|
|
|
|
} //namespace boost {
|
|
|
|
#include <boost/move/detail/config_end.hpp>
|
|
|
|
#endif //#ifndef BOOST_MOVE_ITERATOR_HPP
|