stl_vector.h

粗糙集应用软件

/*
 *
 * 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 __SGI_STL_INTERNAL_VECTOR_H
#define __SGI_STL_INTERNAL_VECTOR_H

# ifndef __SGI_STL_INTERNAL_ALGOBASE_H
#  include <stl_algobase.h>
# endif

# ifndef __SGI_STL_INTERNAL_ALLOC_H
#  include <stl_alloc.h>
# endif

# ifndef __SGI_STL_INTERNAL_ITERATOR_H
#  include <stl_iterator.h>
# endif

# ifndef __SGI_STL_INTERNAL_UNINITIALIZED_H
#  include <stl_uninitialized.h>
# endif

#if defined (__STL_DEBUG) && ! defined (__STLPORT_VEC_ITERATOR_H)
// string uses the same debug iterator as vector
#  include <stl_vec_iterator.h>
#endif

# ifndef __STL_RANGE_ERRORS_H
#  include <stl_range_errors.h>
# endif

__STL_BEGIN_NAMESPACE 

#if defined(__sgi) && !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32)
#pragma set woff 1174
#pragma set woff 1375
#endif

#  define vector __WORKAROUND_RENAME(vector)

# if defined (__STL_DEBUG)
#  define _Make_iterator(__i) iterator(&_M_iter_list, __i)
#  define _Make_const_iterator(__i) const_iterator(&_M_iter_list, __i)
#  define _Make_ptr(__i)   __i._M_iterator
# else
#  define _Make_iterator(__i) __i
#  define _Make_const_iterator(__i) __i
#  define _Make_ptr(__i)   __i
# endif

// The vector base class serves two purposes.  First, its constructor
// and destructor allocate (but don't initialize) storage.  This makes
// exception safety easier.  Second, the base class encapsulates all of
// the differences between SGI-style allocators and standard-conforming
// allocators.

template <class _Tp, class _Alloc> 
class _Vector_base {
public:

  typedef typename _Alloc_traits<_Tp, _Alloc>::allocator_type allocator_type;

  _Vector_base(const _Alloc& __a)
    : _M_start(0), _M_finish(0), _M_end_of_storage(__a, (_Tp*)0) {
  }
  _Vector_base(size_t __n, const _Alloc& __a)
    : _M_start(0), _M_finish(0), _M_end_of_storage(__a, (_Tp*)0)
  {
    _M_start = _M_end_of_storage.allocate(__n);
    _M_finish = _M_start;
    _M_end_of_storage._M_data = _M_start + __n;
  }

  ~_Vector_base() { _M_end_of_storage.deallocate(_M_start, _M_end_of_storage._M_data - _M_start); }

protected:
  _Tp* _M_start;
  _Tp* _M_finish;
  _STL_alloc_proxy<_Tp*, _Tp, allocator_type> _M_end_of_storage;
};

template <class _Tp, __STL_DEFAULT_ALLOCATOR_SELECT(_Tp) >
class vector : public _Vector_base<_Tp, _Alloc> 
{
private:
  typedef _Vector_base<_Tp, _Alloc> _Base;
public:
  typedef _Tp value_type;
  typedef value_type* pointer;
  typedef const value_type* const_pointer;
# if defined (__STL_DEBUG)
  typedef _Vec_iter<_Tp, _Nonconst_traits<_Tp> > iterator;
  typedef _Vec_iter<_Tp, _Const_traits<_Tp> > const_iterator;
private:
  mutable __owned_list _M_iter_list;
# else
  typedef value_type* iterator;
  typedef const value_type* const_iterator;
# endif
public:
  typedef value_type& reference;
  typedef const value_type& const_reference;
  typedef size_t size_type;
  typedef ptrdiff_t difference_type;

#if defined ( __STL_CLASS_PARTIAL_SPECIALIZATION ) && \
! defined (__STL_PARTIAL_SPECIALIZATION_BUG)
  typedef __STLPORT_STD::reverse_iterator<const_iterator> const_reverse_iterator;
  typedef __STLPORT_STD::reverse_iterator<iterator> reverse_iterator;
#else /* __STL_CLASS_PARTIAL_SPECIALIZATION */
# if defined (__STL_MSVC50_COMPATIBILITY)
  typedef __STLPORT_STD::reverse_iterator<const_iterator, value_type, const_reference, 
    const_pointer, difference_type>  const_reverse_iterator;
  typedef __STLPORT_STD::reverse_iterator<iterator, value_type, reference, pointer, difference_type>
    reverse_iterator;
# else
  typedef __STLPORT_STD::reverse_iterator<const_iterator, value_type, const_reference, 
    difference_type>  const_reverse_iterator;
  typedef __STLPORT_STD::reverse_iterator<iterator, value_type, reference, difference_type>
    reverse_iterator;
# endif
#endif /* __STL_CLASS_PARTIAL_SPECIALIZATION */

  typedef typename _Base::allocator_type allocator_type;

  allocator_type get_allocator() const {
    return __STL_CONVERT_ALLOCATOR((const allocator_type&)_M_end_of_storage, _Tp);
  }

protected:
#if defined( __STL_HAS_NAMESPACES )
  __STL_USING_BASE_MEMBER _Vector_base<_Tp, _Alloc>::_M_start;
  __STL_USING_BASE_MEMBER _Vector_base<_Tp, _Alloc>::_M_finish;
  __STL_USING_BASE_MEMBER _Vector_base<_Tp, _Alloc>::_M_end_of_storage;
#endif /* __STL_HAS_NAMESPACES */


protected:
  void _M_insert_aux(pointer __position, const _Tp& __x);
  void _M_insert_aux(pointer __position);

public:
# if defined (__STL_DEBUG)
  iterator begin() { return _Make_iterator(_M_start); }
  const_iterator begin() const { return _Make_const_iterator(_M_start); }
  iterator end() { return _Make_iterator(_M_finish); }
  const_iterator end() const { return _Make_const_iterator(_M_finish); }
# else
  iterator begin() { return _M_start; }
  const_iterator begin() const { return _M_start; }
  iterator end() { return _M_finish; }
  const_iterator end() const { return _M_finish; }
# endif

  reverse_iterator rbegin()
    { return reverse_iterator(end()); }
  const_reverse_iterator rbegin() const
    { return const_reverse_iterator(end()); }
  reverse_iterator rend()
    { return reverse_iterator(begin()); }
  const_reverse_iterator rend() const
    { return const_reverse_iterator(begin()); }

  size_type size() const
    { return size_type(_M_finish - _M_start); }
  size_type max_size() const
    { return size_type(-1) / sizeof(_Tp); }
  size_type capacity() const
    { return size_type(_M_end_of_storage._M_data - _M_start); }
  bool empty() const
    { return _M_start == _M_finish; }

  reference operator[](size_type __n) { return *(begin() + __n); }
  const_reference operator[](size_type __n) const { return *(begin() + __n); }

#ifdef __STL_THROW_RANGE_ERRORS
  void _M_range_check(size_type __n) const {
    if (__n >= (_M_finish-_M_start))
      __stl_throw_range_error("vector");
  }

  reference at(size_type __n)
    { _M_range_check(__n); return (*this)[__n]; }
  const_reference at(size_type __n) const
    { _M_range_check(__n); return (*this)[__n]; }
#endif /* __STL_THROW_RANGE_ERRORS */

  explicit vector(const allocator_type& __a = __STL_ALLOC_INSTANCE(allocator_type))
    : _Vector_base<_Tp, _Alloc>(__a) {
        __stl_debug_do(_M_iter_list._Safe_init(&_M_start));
  }

  vector(size_type __n, const _Tp& __value) 
    : _Vector_base<_Tp, _Alloc>(__n, allocator_type()) { 
      _M_finish = uninitialized_fill_n(_M_start, __n, __value); 
      __stl_debug_do(_M_iter_list._Safe_init(&_M_start));
    }

  vector(size_type __n, const _Tp& __value,
         const allocator_type& __a) 
    : _Vector_base<_Tp, _Alloc>(__n, __a) { 
      _M_finish = uninitialized_fill_n(_M_start, __n, __value); 
      __stl_debug_do(_M_iter_list._Safe_init(&_M_start));
  }

  explicit vector(size_type __n)
    : _Vector_base<_Tp, _Alloc>(__n, allocator_type()) { 
      _M_finish = uninitialized_fill_n(_M_start, __n, _Tp()); 
      __stl_debug_do(_M_iter_list._Safe_init(&_M_start));
    }

  vector(const vector<_Tp, _Alloc>& __x) 
    : _Vector_base<_Tp, _Alloc>(__x.size(), __x.get_allocator()) { 
      _M_finish = uninitialized_copy((const_pointer)__x._M_start, (const_pointer)__x._M_finish, _M_start);
      __stl_debug_do(_M_iter_list._Safe_init(&_M_start));
    }

#ifdef __STL_MEMBER_TEMPLATES
  // Check whether it's an integral type.  If so, it's not an iterator.
  template <class _InputIterator>
  vector(_InputIterator __first, _InputIterator __last,
         const allocator_type& __a = __STL_ALLOC_INSTANCE(allocator_type)) : _Vector_base<_Tp, _Alloc>(__a) {
    typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
    _M_initialize_aux(__first, __last, _Integral());
    __stl_debug_do(_M_iter_list._Safe_init(&_M_start));
  }

  template <class _Integer>
  void _M_initialize_aux(_Integer __n, _Integer __value, __true_type) {
    _M_start = _M_end_of_storage.allocate(__n);
    _M_end_of_storage._M_data = _M_start + __n; 
    _M_finish = uninitialized_fill_n(_M_start, __n, __value);
  }

  template <class _InputIterator>
  void _M_initialize_aux(_InputIterator __first, _InputIterator __last,
                         __false_type) {
    _M_range_initialize(__first, __last, __ITERATOR_CATEGORY(__first));
  }

#else
  vector(const _Tp* __first, const _Tp* __last,
         const allocator_type& __a = __STL_ALLOC_INSTANCE(allocator_type))
    : _Vector_base<_Tp, _Alloc>(__last - __first, __a) { 
      _M_finish = uninitialized_copy(__first, __last, _M_start); 
      __stl_debug_do(_M_iter_list._Safe_init(&_M_start));
  }
# ifdef __STL_DEBUG
  // mysterious VC++ bug
  vector(const_iterator __first, const_iterator __last)
    : _Vector_base<_Tp, _Alloc>(__last - __first, 
				__STL_ALLOC_INSTANCE(allocator_type)) { 
    _M_finish = uninitialized_copy(_Make_ptr(__first), _Make_ptr(__last), _M_start); 
    __stl_debug_do(_M_iter_list._Safe_init(&_M_start));
  }
  vector(const_iterator __first, const_iterator __last , const allocator_type& __a)
    : _Vector_base<_Tp, _Alloc>(__last - __first, __a) { 
    _M_finish = uninitialized_copy(_Make_ptr(__first), _Make_ptr(__last), _M_start); 
    __stl_debug_do(_M_iter_list._Safe_init(&_M_start));
  }
# endif
#endif /* __STL_MEMBER_TEMPLATES */

  ~vector() { __STLPORT_STD::destroy(_M_start, _M_finish); }

  vector<_Tp, _Alloc>& operator=(const vector<_Tp, _Alloc>& __x);

  void reserve(size_type __n);

  // assign(), a generalized assignment member function.  Two
  // versions: one that takes a count, and one that takes a range.
  // The range version is a member template, so we dispatch on whether
  // or not the type is an integer.

  void assign(size_type __n, const _Tp& __val) { _M_fill_assign(__n, __val); }
  void _M_fill_assign(size_type __n, const _Tp& __val);

#ifdef __STL_MEMBER_TEMPLATES
  
  template <class _InputIterator>
  void assign(_InputIterator __first, _InputIterator __last) {
    typedef typename _Is_integer<_InputIterator>::_Integral _Integral;
    _M_assign_dispatch(__first, __last, _Integral());
  }

  template <class _Integer>
  void _M_assign_dispatch(_Integer __n, _Integer __val, __true_type)
    { assign((size_type) __n, (_Tp) __val); }

  template <class _InputIter>
  void _M_assign_dispatch(_InputIter __first, _InputIter __last, __false_type)
    { _M_assign_aux(__first, __last, __ITERATOR_CATEGORY(__first)); }


  template <class _InputIter>
  void _M_assign_aux(_InputIter __first, _InputIter __last,
		     input_iterator_tag) {
    iterator __cur = begin();
    for ( ; __first != __last && __cur != end(); ++__cur, ++__first)
      *__cur = *__first;
    if (__first == __last)
      erase(__cur, end());
    else
      insert(end(), __first, __last);
  }
  
  template <class _ForwardIter>
  void _M_assign_aux(_ForwardIter __first, _ForwardIter __last,
		     forward_iterator_tag)
# if ! defined (__STL_INLINE_MEMBER_TEMPLATES)
;
# else
    {
    size_type __len = 0;
    distance(__first, __last, __len);
    
    if (__len > capacity()) {
      iterator __tmp = _M_allocate_and_copy(__len, __first, __last);
    __STLPORT_STD::destroy(_M_start, _M_finish);
    _M_end_of_storage.deallocate(_M_start, _M_end_of_storage._M_data - _M_start);
    _M_start = __tmp;
    _M_end_of_storage._M_data = _M_finish = _M_start + __len;
    }
    else if (size() >= __len) {
      iterator __new_finish = copy(__first, __last, _M_start);
      __STLPORT_STD::destroy(__new_finish, _M_finish);
      _M_finish = __new_finish;
    }
    else {
    _ForwardIter __mid = __first;
    advance(__mid, size());
    copy(__first, __mid, _M_start);
    _M_finish = uninitialized_copy(__mid, __last, _M_finish);
    }
  }
# endif /* __STL_INLINE_MEMBER_TEMPLATES */
#endif /* __STL_MEMBER_TEMPLATES */

  reference front() { return *begin(); }
  const_reference front() const { return *begin(); }
  reference back() { return *(end() - 1); }
  const_reference back() const { return *(end() - 1); }

  void push_back(const _Tp& __x) {
    if (_M_finish != _M_end_of_storage._M_data) {
      __STLPORT_STD::construct(_M_finish, __x);
      ++_M_finish;
    }
    else
      _M_insert_aux(_M_finish, __x);
  }