list.tcc

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// List implementation (out of line) -*- C++ -*-

// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
// 2011 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// <http://www.gnu.org/licenses/>.

/*
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Hewlett-Packard Company makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 *
 * Copyright (c) 1996,1997
 * Silicon Graphics Computer Systems, Inc.
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Silicon Graphics makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 */

/** @file bits/list.tcc
 *  This is an internal header file, included by other library headers.
 *  Do not attempt to use it directly. @headername{list}
 */

#ifndef _LIST_TCC
#define _LIST_TCC 1

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_CONTAINER

  template<typename _Tp, typename _Alloc>
    void
    _List_base<_Tp, _Alloc>::
    _M_clear()
    {
      typedef _List_node<_Tp>  _Node;
      _Node* __cur = static_cast<_Node*>(this->_M_impl._M_node._M_next);
      while (__cur != &this->_M_impl._M_node)
    {
      _Node* __tmp = __cur;
      __cur = static_cast<_Node*>(__cur->_M_next);
#ifdef __GXX_EXPERIMENTAL_CXX0X__
      _M_get_Node_allocator().destroy(__tmp);
#else
      _M_get_Tp_allocator().destroy(std::__addressof(__tmp->_M_data));
#endif
      _M_put_node(__tmp);
    }
    }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
  template<typename _Tp, typename _Alloc>
    template<typename... _Args>
      typename list<_Tp, _Alloc>::iterator
      list<_Tp, _Alloc>::
      emplace(iterator __position, _Args&&... __args)
      {
    _Node* __tmp = _M_create_node(std::forward<_Args>(__args)...);
    __tmp->_M_hook(__position._M_node);
    return iterator(__tmp);
      }
#endif

  template<typename _Tp, typename _Alloc>
    typename list<_Tp, _Alloc>::iterator
    list<_Tp, _Alloc>::
    insert(iterator __position, const value_type& __x)
    {
      _Node* __tmp = _M_create_node(__x);
      __tmp->_M_hook(__position._M_node);
      return iterator(__tmp);
    }

  template<typename _Tp, typename _Alloc>
    typename list<_Tp, _Alloc>::iterator
    list<_Tp, _Alloc>::
    erase(iterator __position)
    {
      iterator __ret = iterator(__position._M_node->_M_next);
      _M_erase(__position);
      return __ret;
    }

#ifdef __GXX_EXPERIMENTAL_CXX0X__
  template<typename _Tp, typename _Alloc>
    void
    list<_Tp, _Alloc>::
    _M_default_append(size_type __n)
    {
      size_type __i = 0;
      __try
    {
      for (; __i < __n; ++__i)
        emplace_back();
    }
      __catch(...)
    {
      for (; __i; --__i)
        pop_back();
      __throw_exception_again;
    }
    }

  template<typename _Tp, typename _Alloc>
    void
    list<_Tp, _Alloc>::
    resize(size_type __new_size)
    {
      iterator __i = begin();
      size_type __len = 0;
      for (; __i != end() && __len < __new_size; ++__i, ++__len)
        ;
      if (__len == __new_size)
        erase(__i, end());
      else                          // __i == end()
    _M_default_append(__new_size - __len);
    }

  template<typename _Tp, typename _Alloc>
    void
    list<_Tp, _Alloc>::
    resize(size_type __new_size, const value_type& __x)
    {
      iterator __i = begin();
      size_type __len = 0;
      for (; __i != end() && __len < __new_size; ++__i, ++__len)
        ;
      if (__len == __new_size)
        erase(__i, end());
      else                          // __i == end()
        insert(end(), __new_size - __len, __x);
    }
#else
  template<typename _Tp, typename _Alloc>
    void
    list<_Tp, _Alloc>::
    resize(size_type __new_size, value_type __x)
    {
      iterator __i = begin();
      size_type __len = 0;
      for (; __i != end() && __len < __new_size; ++__i, ++__len)
        ;
      if (__len == __new_size)
        erase(__i, end());
      else                          // __i == end()
        insert(end(), __new_size - __len, __x);
    }
#endif

  template<typename _Tp, typename _Alloc>
    list<_Tp, _Alloc>&
    list<_Tp, _Alloc>::
    operator=(const list& __x)
    {
      if (this != &__x)
    {
      iterator __first1 = begin();
      iterator __last1 = end();
      const_iterator __first2 = __x.begin();
      const_iterator __last2 = __x.end();
      for (; __first1 != __last1 && __first2 != __last2;
           ++__first1, ++__first2)
        *__first1 = *__first2;
      if (__first2 == __last2)
        erase(__first1, __last1);
      else
        insert(__last1, __first2, __last2);
    }
      return *this;
    }

  template<typename _Tp, typename _Alloc>
    void
    list<_Tp, _Alloc>::
    _M_fill_assign(size_type __n, const value_type& __val)
    {
      iterator __i = begin();
      for (; __i != end() && __n > 0; ++__i, --__n)
        *__i = __val;
      if (__n > 0)
        insert(end(), __n, __val);
      else
        erase(__i, end());
    }

  template<typename _Tp, typename _Alloc>
    template <typename _InputIterator>
      void
      list<_Tp, _Alloc>::
      _M_assign_dispatch(_InputIterator __first2, _InputIterator __last2,
             __false_type)
      {
        iterator __first1 = begin();
        iterator __last1 = end();
        for (; __first1 != __last1 && __first2 != __last2;
         ++__first1, ++__first2)
          *__first1 = *__first2;
        if (__first2 == __last2)
          erase(__first1, __last1);
        else
          insert(__last1, __first2, __last2);
      }

  template<typename _Tp, typename _Alloc>
    void
    list<_Tp, _Alloc>::
    remove(const value_type& __value)
    {
      iterator __first = begin();
      iterator __last = end();
      iterator __extra = __last;
      while (__first != __last)
    {
      iterator __next = __first;
      ++__next;
      if (*__first == __value)
        {
          // _GLIBCXX_RESOLVE_LIB_DEFECTS
          // 526. Is it undefined if a function in the standard changes
          // in parameters?
          if (std::__addressof(*__first) != std::__addressof(__value))
        _M_erase(__first);
          else
        __extra = __first;
        }
      __first = __next;
    }
      if (__extra != __last)
    _M_erase(__extra);
    }

  template<typename _Tp, typename _Alloc>
    void
    list<_Tp, _Alloc>::
    unique()
    {
      iterator __first = begin();
      iterator __last = end();
      if (__first == __last)
    return;
      iterator __next = __first;
      while (++__next != __last)
    {
      if (*__first == *__next)
        _M_erase(__next);
      else
        __first = __next;
      __next = __first;
    }
    }

  template<typename _Tp, typename _Alloc>
    void
    list<_Tp, _Alloc>::
#ifdef __GXX_EXPERIMENTAL_CXX0X__
    merge(list&& __x)
#else
    merge(list& __x)
#endif
    {
      // _GLIBCXX_RESOLVE_LIB_DEFECTS
      // 300. list::merge() specification incomplete
      if (this != &__x)
    {
      _M_check_equal_allocators(__x); 

      iterator __first1 = begin();
      iterator __last1 = end();
      iterator __first2 = __x.begin();
      iterator __last2 = __x.end();
      while (__first1 != __last1 && __first2 != __last2)
        if (*__first2 < *__first1)
          {
        iterator __next = __first2;
        _M_transfer(__first1, __first2, ++__next);
        __first2 = __next;
          }
        else
          ++__first1;
      if (__first2 != __last2)
        _M_transfer(__last1, __first2, __last2);
    }
    }

  template<typename _Tp, typename _Alloc>
    template <typename _StrictWeakOrdering>
      void
      list<_Tp, _Alloc>::
#ifdef __GXX_EXPERIMENTAL_CXX0X__
      merge(list&& __x, _StrictWeakOrdering __comp)
#else
      merge(list& __x, _StrictWeakOrdering __comp)
#endif
      {
    // _GLIBCXX_RESOLVE_LIB_DEFECTS
    // 300. list::merge() specification incomplete
    if (this != &__x)
      {
        _M_check_equal_allocators(__x);

        iterator __first1 = begin();
        iterator __last1 = end();
        iterator __first2 = __x.begin();
        iterator __last2 = __x.end();
        while (__first1 != __last1 && __first2 != __last2)
          if (__comp(*__first2, *__first1))
        {
          iterator __next = __first2;
          _M_transfer(__first1, __first2, ++__next);
          __first2 = __next;
        }
          else
        ++__first1;
        if (__first2 != __last2)
          _M_transfer(__last1, __first2, __last2);
      }
      }

  template<typename _Tp, typename _Alloc>
    void
    list<_Tp, _Alloc>::
    sort()
    {
      // Do nothing if the list has length 0 or 1.
      if (this->_M_impl._M_node._M_next != &this->_M_impl._M_node
      && this->_M_impl._M_node._M_next->_M_next != &this->_M_impl._M_node)
      {
        list __carry;
        list __tmp[64];
        list * __fill = &__tmp[0];
        list * __counter;

        do
      {
        __carry.splice(__carry.begin(), *this, begin());

        for(__counter = &__tmp[0];
        __counter != __fill && !__counter->empty();
        ++__counter)
          {
        __counter->merge(__carry);
        __carry.swap(*__counter);
          }
        __carry.swap(*__counter);
        if (__counter == __fill)
          ++__fill;
      }
    while ( !empty() );

        for (__counter = &__tmp[1]; __counter != __fill; ++__counter)
          __counter->merge(*(__counter - 1));
        swap( *(__fill - 1) );
      }
    }

  template<typename _Tp, typename _Alloc>
    template <typename _Predicate>
      void
      list<_Tp, _Alloc>::
      remove_if(_Predicate __pred)
      {
        iterator __first = begin();
        iterator __last = end();
        while (__first != __last)
      {
        iterator __next = __first;
        ++__next;
        if (__pred(*__first))
          _M_erase(__first);
        __first = __next;
      }
      }

  template<typename _Tp, typename _Alloc>
    template <typename _BinaryPredicate>
      void
      list<_Tp, _Alloc>::
      unique(_BinaryPredicate __binary_pred)
      {
        iterator __first = begin();
        iterator __last = end();
        if (__first == __last)
      return;
        iterator __next = __first;
        while (++__next != __last)
      {
        if (__binary_pred(*__first, *__next))
          _M_erase(__next);
        else
          __first = __next;
        __next = __first;
      }
      }

  template<typename _Tp, typename _Alloc>
    template <typename _StrictWeakOrdering>
      void
      list<_Tp, _Alloc>::
      sort(_StrictWeakOrdering __comp)
      {
    // Do nothing if the list has length 0 or 1.
    if (this->_M_impl._M_node._M_next != &this->_M_impl._M_node
        && this->_M_impl._M_node._M_next->_M_next != &this->_M_impl._M_node)
      {
        list __carry;
        list __tmp[64];
        list * __fill = &__tmp[0];
        list * __counter;

        do
          {
        __carry.splice(__carry.begin(), *this, begin());

        for(__counter = &__tmp[0];
            __counter != __fill && !__counter->empty();
            ++__counter)
          {
            __counter->merge(__carry, __comp);
            __carry.swap(*__counter);
          }
        __carry.swap(*__counter);
        if (__counter == __fill)
          ++__fill;
          }
        while ( !empty() );

        for (__counter = &__tmp[1]; __counter != __fill; ++__counter)
          __counter->merge(*(__counter - 1), __comp);
        swap(*(__fill - 1));
      }
      }

_GLIBCXX_END_NAMESPACE_CONTAINER
} // namespace std

#endif /* _LIST_TCC */