_list.h

symbian 上的stl_port进过编译的。

/*
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Copyright (c) 1996,1997
 * Silicon Graphics Computer Systems, Inc.
 *
 * Copyright (c) 1997
 * Moscow Center for SPARC Technology
 *
 * Copyright (c) 1999
 * Boris Fomitchev
 *
 * This material is provided "as is", with absolutely no warranty expressed
 * or implied. Any use is at your own risk.
 *
 * Permission to use or copy this software for any purpose is hereby granted
 * without fee, provided the above notices are retained on all copies.
 * Permission to modify the code and to distribute modified code is granted,
 * provided the above notices are retained, and a notice that the code was
 * modified is included with the above copyright notice.
 *
 */

/* NOTE: This is an internal header file, included by other STL headers.
 *   You should not attempt to use it directly.
 */

#ifndef _STLP_INTERNAL_LIST_IMPL_H
#define _STLP_INTERNAL_LIST_IMPL_H

#ifndef _STLP_INTERNAL_ALGOBASE_H
#  include <stl/_algobase.h>
#endif

#ifndef _STLP_INTERNAL_ALLOC_H
#  include <stl/_alloc.h>
#endif

#ifndef _STLP_INTERNAL_ITERATOR_H
#  include <stl/_iterator.h>
#endif

#ifndef _STLP_INTERNAL_CONSTRUCT_H
#  include <stl/_construct.h>
#endif

#ifndef _STLP_INTERNAL_FUNCTION_BASE_H
#  include <stl/_function_base.h>
#endif

_STLP_BEGIN_NAMESPACE

_STLP_MOVE_TO_PRIV_NAMESPACE

struct _List_node_base {
  _List_node_base* _M_next;
  _List_node_base* _M_prev;
};

template <class _Dummy>
class _List_global {
public:
  typedef _List_node_base _Node_base;
  static void  _STLP_CALL _Transfer(_Node_base* __pos,
                                    _Node_base* __first, _Node_base* __last);
};

#if defined (_STLP_USE_TEMPLATE_EXPORT)
_STLP_EXPORT_TEMPLATE_CLASS _List_global<bool>;
#endif
typedef _List_global<bool> _List_global_inst;

template <class _Tp>
class _List_node : public _List_node_base {
public:
  _Tp _M_data;
  __TRIVIAL_STUFF(_List_node)
};

struct _List_iterator_base {
  typedef size_t                     size_type;
  typedef ptrdiff_t                  difference_type;
  typedef bidirectional_iterator_tag iterator_category;

  _List_node_base* _M_node;

  _List_iterator_base(_List_node_base* __x) : _M_node(__x) {}

  void _M_incr() { _M_node = _M_node->_M_next; }
  void _M_decr() { _M_node = _M_node->_M_prev; }
};


template<class _Tp, class _Traits>
struct _List_iterator : public _List_iterator_base {
  typedef _Tp value_type;
  typedef typename _Traits::pointer    pointer;
  typedef typename _Traits::reference  reference;

  typedef _List_iterator<_Tp, _Traits>         _Self;
  typedef typename _Traits::_NonConstTraits    _NonConstTraits;
  typedef _List_iterator<_Tp, _NonConstTraits> iterator;
  typedef typename _Traits::_ConstTraits       _ConstTraits;
  typedef _List_iterator<_Tp, _ConstTraits>    const_iterator;

  typedef bidirectional_iterator_tag iterator_category;
  typedef _List_node<_Tp> _Node;
  typedef size_t size_type;
  typedef ptrdiff_t difference_type;

  explicit _List_iterator(_List_node_base* __x) : _List_iterator_base(__x) {}
  _List_iterator() : _List_iterator_base(0) {}
  //copy constructor for iterator and constructor from iterator for const_iterator
  _List_iterator(const iterator& __x) :  _List_iterator_base(__x._M_node) {}

  reference operator*() const { return __STATIC_CAST(_Node*, this->_M_node)->_M_data; }

  _STLP_DEFINE_ARROW_OPERATOR

  _Self& operator++() {
    this->_M_incr();
    return *this;
  }
  _Self operator++(int) {
    _Self __tmp = *this;
    this->_M_incr();
    return __tmp;
  }
  _Self& operator--() {
    this->_M_decr();
    return *this;
  }
  _Self operator--(int) {
    _Self __tmp = *this;
    this->_M_decr();
    return __tmp;
  }
  bool operator==(const_iterator __y ) const {
    return this->_M_node == __y._M_node;
  }
  bool operator!=(const_iterator __y ) const {
    return this->_M_node != __y._M_node;
  }
};

#if defined (_STLP_CLASS_PARTIAL_SPECIALIZATION)
_STLP_MOVE_TO_STD_NAMESPACE
template <class _Tp, class _Traits>
struct __type_traits<_STLP_PRIV _List_iterator<_Tp, _Traits> > {
  typedef __false_type   has_trivial_default_constructor;
  typedef __true_type    has_trivial_copy_constructor;
  typedef __true_type    has_trivial_assignment_operator;
  typedef __true_type    has_trivial_destructor;
  typedef __false_type   is_POD_type;
};
_STLP_MOVE_TO_PRIV_NAMESPACE
#endif /* _STLP_CLASS_PARTIAL_SPECIALIZATION */

#if defined (_STLP_USE_OLD_HP_ITERATOR_QUERIES)
_STLP_MOVE_TO_STD_NAMESPACE
template <class _Tp, class _Traits>
inline _Tp* value_type(const _STLP_PRIV _List_iterator<_Tp, _Traits>&) { return 0; }
inline bidirectional_iterator_tag iterator_category(const _STLP_PRIV _List_iterator_base&) { return bidirectional_iterator_tag();}
inline ptrdiff_t* distance_type(const _STLP_PRIV _List_iterator_base&) { return 0; }
_STLP_MOVE_TO_PRIV_NAMESPACE
#endif

// Base class that encapsulates details of allocators and helps
// to simplify EH

template <class _Tp, class _Alloc>
class _List_base {
protected:
  _STLP_FORCE_ALLOCATORS(_Tp, _Alloc)
  typedef _List_node_base _Node_base;
  typedef _List_node<_Tp> _Node;
  typedef _List_base<_Tp, _Alloc> _Self;
  typedef typename _Alloc_traits<_Node, _Alloc>::allocator_type _Node_allocator_type;
public:
  typedef _STLP_alloc_proxy<_Node_base, _Node, _Node_allocator_type> _AllocProxy;
  typedef typename _Alloc_traits<_Tp, _Alloc>::allocator_type allocator_type;

  allocator_type get_allocator() const
  { return _STLP_CONVERT_ALLOCATOR((const _Node_allocator_type&)_M_node, _Tp); }

  _List_base(const allocator_type& __a) : _M_node(_STLP_CONVERT_ALLOCATOR(__a, _Node), _Node_base())
  { _M_empty_initialize(); }
  _List_base(__move_source<_Self> src) :
    _M_node(__move_source<_AllocProxy>(src.get()._M_node)) {
    if (src.get().empty())
      //We force this to empty.
      _M_empty_initialize();
    else {
      src.get()._M_empty_initialize();
      _M_node._M_data._M_prev->_M_next = _M_node._M_data._M_next->_M_prev = &_M_node._M_data;
    }
  }

  ~_List_base()
  { clear(); }

  void clear();
  bool empty() const { return _M_node._M_data._M_next == &_M_node._M_data; }

  void _M_empty_initialize() {
    _M_node._M_data._M_next = &_M_node._M_data;
    _M_node._M_data._M_prev = _M_node._M_data._M_next;
  }

public:
  _AllocProxy _M_node;
};

#if defined (_STLP_USE_PTR_SPECIALIZATIONS)
#  define list _STLP_PTR_IMPL_NAME(list)
#elif defined (_STLP_DEBUG)
#  define list _STLP_NON_DBG_NAME(list)
#else
_STLP_MOVE_TO_STD_NAMESPACE
#endif

template <class _Tp, _STLP_DEFAULT_ALLOCATOR_SELECT(_Tp) >
class list;

#if !defined (list)
_STLP_MOVE_TO_PRIV_NAMESPACE
#endif

// helper functions to reduce code duplication
template <class _Tp, class _Alloc, class _Predicate>
void _S_remove_if(list<_Tp, _Alloc>& __that, _Predicate __pred);

template <class _Tp, class _Alloc, class _BinaryPredicate>
void _S_unique(list<_Tp, _Alloc>& __that, _BinaryPredicate __binary_pred);

template <class _Tp, class _Alloc, class _StrictWeakOrdering>
void _S_merge(list<_Tp, _Alloc>& __that, list<_Tp, _Alloc>& __x,
              _StrictWeakOrdering __comp);

template <class _Tp, class _Alloc, class _StrictWeakOrdering>
void _S_sort(list<_Tp, _Alloc>& __that, _StrictWeakOrdering __comp);

#if !defined (list)
_STLP_MOVE_TO_STD_NAMESPACE
#endif

template <class _Tp, class _Alloc>
class list : public _STLP_PRIV _List_base<_Tp, _Alloc>
#if defined (_STLP_USE_PARTIAL_SPEC_WORKAROUND) && !defined (list)
           , public __stlport_class<list<_Tp, _Alloc> >
#endif
{
  typedef _STLP_PRIV _List_base<_Tp, _Alloc> _Base;
  typedef list<_Tp, _Alloc> _Self;
  typedef _STLP_PRIV _List_node<_Tp> _Node;
  typedef _STLP_PRIV _List_node_base _Node_base;
public:
  typedef _Tp value_type;
  typedef value_type* pointer;
  typedef const value_type* const_pointer;
  typedef value_type& reference;
  typedef const value_type& const_reference;
  typedef size_t size_type;
  typedef ptrdiff_t difference_type;
  _STLP_FORCE_ALLOCATORS(_Tp, _Alloc)
  typedef typename _Base::allocator_type allocator_type;
  typedef bidirectional_iterator_tag _Iterator_category;

public:
  typedef _STLP_PRIV _List_iterator<_Tp, _Nonconst_traits<_Tp> > iterator;
  typedef _STLP_PRIV _List_iterator<_Tp, _Const_traits<_Tp> >    const_iterator;
  _STLP_DECLARE_BIDIRECTIONAL_REVERSE_ITERATORS;

protected:
#if !defined(_STLP_DONT_SUP_DFLT_PARAM)
  _Node_base* _M_create_node(const_reference __x = value_type()) {
#else
  _Node_base* _M_create_node(const_reference __x) {
#endif /*!_STLP_DONT_SUP_DFLT_PARAM*/
    _Node* __p = this->_M_node.allocate(1);
    _STLP_TRY {
      _Copy_Construct(&__p->_M_data, __x);
    }
    _STLP_UNWIND(this->_M_node.deallocate(__p, 1))
    return __p;
  }

#if defined(_STLP_DONT_SUP_DFLT_PARAM)
  _Node_base* _M_create_node() {
    _Node* __p = this->_M_node.allocate(1);
    _STLP_TRY {
      _STLP_STD::_Construct(&__p->_M_data);
    }
    _STLP_UNWIND(this->_M_node.deallocate(__p, 1))
    return __p;
  }
#endif /*_STLP_DONT_SUP_DFLT_PARAM*/

public:
#if !defined (_STLP_DONT_SUP_DFLT_PARAM)
  explicit list(size_type __n, const_reference __val = _STLP_DEFAULT_CONSTRUCTED(value_type),
                const allocator_type& __a = allocator_type())
#else
  explicit list(size_type __n)
    : _STLP_PRIV _List_base<_Tp, _Alloc>(allocator_type())
    { this->insert(begin(), __n, _STLP_DEFAULT_CONSTRUCTED(value_type)); }
  list(size_type __n, const_reference __val)
    : _STLP_PRIV _List_base<_Tp, _Alloc>(allocator_type())
    { this->insert(begin(), __n, __val); }
  list(size_type __n, const_reference __val, const allocator_type& __a)
#endif /*_STLP_DONT_SUP_DFLT_PARAM*/
    : _STLP_PRIV _List_base<_Tp, _Alloc>(__a)
    { this->insert(begin(), __n, __val); }

#if defined (_STLP_MEMBER_TEMPLATES)
  // We don't need any dispatching tricks here, because insert does all of
  // that anyway.
  template <class _InputIterator>
  list(_InputIterator __first, _InputIterator __last,
       const allocator_type& __a _STLP_ALLOCATOR_TYPE_DFL)
    : _STLP_PRIV _List_base<_Tp, _Alloc>(__a)
  { _M_insert(begin(), __first, __last); }

#  if defined (_STLP_NEEDS_EXTRA_TEMPLATE_CONSTRUCTORS)
  template <class _InputIterator>
  list(_InputIterator __first, _InputIterator __last)
    : _STLP_PRIV _List_base<_Tp, _Alloc>(allocator_type())
  { _M_insert(begin(), __first, __last); }
#  endif
#else /* _STLP_MEMBER_TEMPLATES */
  list(const value_type* __first, const value_type* __last,
       const allocator_type& __a = allocator_type())
    : _STLP_PRIV _List_base<_Tp, _Alloc>(__a)
    { _M_insert(begin(), __first, __last); }
  list(const_iterator __first, const_iterator __last,
       const allocator_type& __a = allocator_type())
    : _STLP_PRIV _List_base<_Tp, _Alloc>(__a)
    { _M_insert(begin(), __first, __last); }
#endif /* _STLP_MEMBER_TEMPLATES */

#if !defined (_STLP_DONT_SUP_DFLT_PARAM)
  explicit list(const allocator_type& __a = allocator_type())
#else
  list()
    : _STLP_PRIV _List_base<_Tp, _Alloc>(allocator_type()) {}
  list(const allocator_type& __a)
#endif
    : _STLP_PRIV _List_base<_Tp, _Alloc>(__a) {}

  list(const _Self& __x) : _STLP_PRIV _List_base<_Tp, _Alloc>(__x.get_allocator())
  { _M_insert(begin(), __x.begin(), __x.end()); }

  list(__move_source<_Self> src)
    : _STLP_PRIV _List_base<_Tp, _Alloc>(__move_source<_Base>(src.get())) {}

  ~list() {}

  _Self& operator = (const _Self& __x);

  iterator begin()                      { return iterator(this->_M_node._M_data._M_next); }
  const_iterator begin() const          { return const_iterator(this->_M_node._M_data._M_next); }

  iterator end()                        { return iterator(&this->_M_node._M_data); }
  const_iterator end() const            { return const_iterator(__CONST_CAST(_Node_base*, &this->_M_node._M_data)); }