namespace std
{
- typedef bool _Rb_tree_Color_type;
- extern const _Rb_tree_Color_type _S_rb_tree_red; // false
- extern const _Rb_tree_Color_type _S_rb_tree_black; // true
+ enum _Rb_tree_color { _M_red = false, _M_black = true };
-struct _Rb_tree_node_base
-{
- typedef _Rb_tree_Color_type _Color_type;
- typedef _Rb_tree_node_base* _Base_ptr;
+ struct _Rb_tree_node_base
+ {
+ typedef _Rb_tree_node_base* _Base_ptr;
+
+ _Rb_tree_color _M_color;
+ _Base_ptr _M_parent;
+ _Base_ptr _M_left;
+ _Base_ptr _M_right;
+
+ static _Base_ptr
+ _S_minimum(_Base_ptr __x)
+ {
+ while (__x->_M_left != 0) __x = __x->_M_left;
+ return __x;
+ }
- _Color_type _M_color;
- _Base_ptr _M_parent;
- _Base_ptr _M_left;
- _Base_ptr _M_right;
+ static _Base_ptr
+ _S_maximum(_Base_ptr __x)
+ {
+ while (__x->_M_right != 0) __x = __x->_M_right;
+ return __x;
+ }
+ };
- static _Base_ptr _S_minimum(_Base_ptr __x)
+ template<typename _Val>
+ struct _Rb_tree_node : public _Rb_tree_node_base
+ {
+ typedef _Rb_tree_node<_Val>* _Link_type;
+ _Val _M_value_field;
+ };
+
+ struct _Rb_tree_base_iterator
{
- while (__x->_M_left != 0) __x = __x->_M_left;
- return __x;
- }
+ typedef _Rb_tree_node_base::_Base_ptr _Base_ptr;
+ typedef bidirectional_iterator_tag iterator_category;
+ typedef ptrdiff_t difference_type;
+
+ _Base_ptr _M_node;
+
+ void
+ _M_increment()
+ {
+ if (_M_node->_M_right != 0)
+ {
+ _M_node = _M_node->_M_right;
+ while (_M_node->_M_left != 0)
+ _M_node = _M_node->_M_left;
+ }
+ else
+ {
+ _Base_ptr __y = _M_node->_M_parent;
+ while (_M_node == __y->_M_right)
+ {
+ _M_node = __y;
+ __y = __y->_M_parent;
+ }
+ if (_M_node->_M_right != __y)
+ _M_node = __y;
+ }
+ }
+
+ void
+ _M_decrement()
+ {
+ if (_M_node->_M_color == _M_red
+ && _M_node->_M_parent->_M_parent == _M_node)
+ _M_node = _M_node->_M_right;
+ else if (_M_node->_M_left != 0)
+ {
+ _Base_ptr __y = _M_node->_M_left;
+ while (__y->_M_right != 0)
+ __y = __y->_M_right;
+ _M_node = __y;
+ }
+ else
+ {
+ _Base_ptr __y = _M_node->_M_parent;
+ while (_M_node == __y->_M_left)
+ {
+ _M_node = __y;
+ __y = __y->_M_parent;
+ }
+ _M_node = __y;
+ }
+ }
+ };
+
+ template<typename _Val, typename _Ref, typename _Ptr>
+ struct _Rb_tree_iterator : public _Rb_tree_base_iterator
+ {
+ typedef _Val value_type;
+ typedef _Ref reference;
+ typedef _Ptr pointer;
+ typedef _Rb_tree_iterator<_Val, _Val&, _Val*> iterator;
+ typedef _Rb_tree_iterator<_Val, const _Val&, const _Val*>
+ const_iterator;
+ typedef _Rb_tree_iterator<_Val, _Ref, _Ptr> _Self;
+ typedef _Rb_tree_node<_Val>* _Link_type;
+
+ _Rb_tree_iterator() {}
+ _Rb_tree_iterator(_Link_type __x) { _M_node = __x; }
+ _Rb_tree_iterator(const iterator& __it) { _M_node = __it._M_node; }
+
+ reference
+ operator*() const { return _Link_type(_M_node)->_M_value_field; }
+
+ pointer
+ operator->() const { return &(operator*()); }
+
+ _Self&
+ operator++()
+ {
+ _M_increment();
+ return *this;
+ }
- static _Base_ptr _S_maximum(_Base_ptr __x)
+ _Self
+ operator++(int)
+ {
+ _Self __tmp = *this;
+ _M_increment();
+ return __tmp;
+ }
+
+ _Self&
+ operator--() { _M_decrement(); return *this; }
+
+ _Self
+ operator--(int)
+ {
+ _Self __tmp = *this;
+ _M_decrement();
+ return __tmp;
+ }
+ };
+
+ template<typename _Val, typename _Ref, typename _Ptr>
+ inline bool
+ operator==(const _Rb_tree_iterator<_Val, _Ref, _Ptr>& __x,
+ const _Rb_tree_iterator<_Val, _Ref, _Ptr>& __y)
+ { return __x._M_node == __y._M_node; }
+
+ template<typename _Val>
+ inline bool
+ operator==(const _Rb_tree_iterator<_Val, const _Val&, const _Val*>& __x,
+ const _Rb_tree_iterator<_Val, _Val&, _Val*>& __y)
+ { return __x._M_node == __y._M_node; }
+
+ template<typename _Val>
+ inline bool
+ operator==(const _Rb_tree_iterator<_Val, _Val&, _Val*>& __x,
+ const _Rb_tree_iterator<_Val, const _Val&, const _Val*>& __y)
+ { return __x._M_node == __y._M_node; }
+
+ template<typename _Val, typename _Ref, typename _Ptr>
+ inline bool
+ operator!=(const _Rb_tree_iterator<_Val, _Ref, _Ptr>& __x,
+ const _Rb_tree_iterator<_Val, _Ref, _Ptr>& __y)
+ { return __x._M_node != __y._M_node; }
+
+ template<typename _Val>
+ inline bool
+ operator!=(const _Rb_tree_iterator<_Val, const _Val&, const _Val*>& __x,
+ const _Rb_tree_iterator<_Val, _Val&, _Val*>& __y)
+ { return __x._M_node != __y._M_node; }
+
+ template<typename _Val>
+ inline bool
+ operator!=(const _Rb_tree_iterator<_Val, _Val&, _Val*>& __x,
+ const _Rb_tree_iterator<_Val, const _Val&, const _Val*>& __y)
+ { return __x._M_node != __y._M_node; }
+
+ inline void
+ _Rb_tree_rotate_left(_Rb_tree_node_base* __x, _Rb_tree_node_base*& __root)
{
- while (__x->_M_right != 0) __x = __x->_M_right;
- return __x;
+ _Rb_tree_node_base* __y = __x->_M_right;
+ __x->_M_right = __y->_M_left;
+ if (__y->_M_left !=0)
+ __y->_M_left->_M_parent = __x;
+ __y->_M_parent = __x->_M_parent;
+
+ if (__x == __root)
+ __root = __y;
+ else if (__x == __x->_M_parent->_M_left)
+ __x->_M_parent->_M_left = __y;
+ else
+ __x->_M_parent->_M_right = __y;
+ __y->_M_left = __x;
+ __x->_M_parent = __y;
}
-};
-
-template <class _Value>
-struct _Rb_tree_node : public _Rb_tree_node_base
-{
- typedef _Rb_tree_node<_Value>* _Link_type;
- _Value _M_value_field;
-};
+ inline void
+ _Rb_tree_rotate_right(_Rb_tree_node_base* __x, _Rb_tree_node_base*& __root)
+ {
+ _Rb_tree_node_base* __y = __x->_M_left;
+ __x->_M_left = __y->_M_right;
+ if (__y->_M_right != 0)
+ __y->_M_right->_M_parent = __x;
+ __y->_M_parent = __x->_M_parent;
-struct _Rb_tree_base_iterator
-{
- typedef _Rb_tree_node_base::_Base_ptr _Base_ptr;
- typedef bidirectional_iterator_tag iterator_category;
- typedef ptrdiff_t difference_type;
- _Base_ptr _M_node;
+ if (__x == __root)
+ __root = __y;
+ else if (__x == __x->_M_parent->_M_right)
+ __x->_M_parent->_M_right = __y;
+ else
+ __x->_M_parent->_M_left = __y;
+ __y->_M_right = __x;
+ __x->_M_parent = __y;
+ }
- void _M_increment()
+ inline void
+ _Rb_tree_rebalance(_Rb_tree_node_base* __x, _Rb_tree_node_base*& __root)
{
- if (_M_node->_M_right != 0) {
- _M_node = _M_node->_M_right;
- while (_M_node->_M_left != 0)
- _M_node = _M_node->_M_left;
- }
- else {
- _Base_ptr __y = _M_node->_M_parent;
- while (_M_node == __y->_M_right) {
- _M_node = __y;
- __y = __y->_M_parent;
+ __x->_M_color = _M_red;
+ while (__x != __root
+ && __x->_M_parent->_M_color == _M_red)
+ {
+ if (__x->_M_parent == __x->_M_parent->_M_parent->_M_left)
+ {
+ _Rb_tree_node_base* __y = __x->_M_parent->_M_parent->_M_right;
+ if (__y && __y->_M_color == _M_red)
+ {
+ __x->_M_parent->_M_color = _M_black;
+ __y->_M_color = _M_black;
+ __x->_M_parent->_M_parent->_M_color = _M_red;
+ __x = __x->_M_parent->_M_parent;
+ }
+ else
+ {
+ if (__x == __x->_M_parent->_M_right)
+ {
+ __x = __x->_M_parent;
+ _Rb_tree_rotate_left(__x, __root);
+ }
+ __x->_M_parent->_M_color = _M_black;
+ __x->_M_parent->_M_parent->_M_color = _M_red;
+ _Rb_tree_rotate_right(__x->_M_parent->_M_parent, __root);
+ }
+ }
+ else
+ {
+ _Rb_tree_node_base* __y = __x->_M_parent->_M_parent->_M_left;
+ if (__y && __y->_M_color == _M_red)
+ {
+ __x->_M_parent->_M_color = _M_black;
+ __y->_M_color = _M_black;
+ __x->_M_parent->_M_parent->_M_color = _M_red;
+ __x = __x->_M_parent->_M_parent;
+ }
+ else
+ {
+ if (__x == __x->_M_parent->_M_left)
+ {
+ __x = __x->_M_parent;
+ _Rb_tree_rotate_right(__x, __root);
+ }
+ __x->_M_parent->_M_color = _M_black;
+ __x->_M_parent->_M_parent->_M_color = _M_red;
+ _Rb_tree_rotate_left(__x->_M_parent->_M_parent, __root);
+ }
+ }
}
- if (_M_node->_M_right != __y)
- _M_node = __y;
- }
+ __root->_M_color = _M_black;
}
- void _M_decrement()
+ inline _Rb_tree_node_base*
+ _Rb_tree_rebalance_for_erase(_Rb_tree_node_base* __z,
+ _Rb_tree_node_base*& __root,
+ _Rb_tree_node_base*& __leftmost,
+ _Rb_tree_node_base*& __rightmost)
{
- if (_M_node->_M_color == _S_rb_tree_red &&
- _M_node->_M_parent->_M_parent == _M_node)
- _M_node = _M_node->_M_right;
- else if (_M_node->_M_left != 0) {
- _Base_ptr __y = _M_node->_M_left;
- while (__y->_M_right != 0)
- __y = __y->_M_right;
- _M_node = __y;
- }
- else {
- _Base_ptr __y = _M_node->_M_parent;
- while (_M_node == __y->_M_left) {
- _M_node = __y;
- __y = __y->_M_parent;
+ _Rb_tree_node_base* __y = __z;
+ _Rb_tree_node_base* __x = 0;
+ _Rb_tree_node_base* __x_parent = 0;
+ if (__y->_M_left == 0) // __z has at most one non-null child. y == z.
+ __x = __y->_M_right; // __x might be null.
+ else
+ if (__y->_M_right == 0) // __z has exactly one non-null child. y == z.
+ __x = __y->_M_left; // __x is not null.
+ else
+ {
+ // __z has two non-null children. Set __y to
+ __y = __y->_M_right; // __z's successor. __x might be null.
+ while (__y->_M_left != 0)
+ __y = __y->_M_left;
+ __x = __y->_M_right;
+ }
+ if (__y != __z)
+ {
+ // relink y in place of z. y is z's successor
+ __z->_M_left->_M_parent = __y;
+ __y->_M_left = __z->_M_left;
+ if (__y != __z->_M_right)
+ {
+ __x_parent = __y->_M_parent;
+ if (__x) __x->_M_parent = __y->_M_parent;
+ __y->_M_parent->_M_left = __x; // __y must be a child of _M_left
+ __y->_M_right = __z->_M_right;
+ __z->_M_right->_M_parent = __y;
+ }
+ else
+ __x_parent = __y;
+ if (__root == __z)
+ __root = __y;
+ else if (__z->_M_parent->_M_left == __z)
+ __z->_M_parent->_M_left = __y;
+ else
+ __z->_M_parent->_M_right = __y;
+ __y->_M_parent = __z->_M_parent;
+ std::swap(__y->_M_color, __z->_M_color);
+ __y = __z;
+ // __y now points to node to be actually deleted
}
- _M_node = __y;
- }
- }
-};
-
-template <class _Value, class _Ref, class _Ptr>
-struct _Rb_tree_iterator : public _Rb_tree_base_iterator
-{
- typedef _Value value_type;
- typedef _Ref reference;
- typedef _Ptr pointer;
- typedef _Rb_tree_iterator<_Value, _Value&, _Value*>
- iterator;
- typedef _Rb_tree_iterator<_Value, const _Value&, const _Value*>
- const_iterator;
- typedef _Rb_tree_iterator<_Value, _Ref, _Ptr>
- _Self;
- typedef _Rb_tree_node<_Value>* _Link_type;
-
- _Rb_tree_iterator() {}
- _Rb_tree_iterator(_Link_type __x) { _M_node = __x; }
- _Rb_tree_iterator(const iterator& __it) { _M_node = __it._M_node; }
-
- reference operator*() const { return _Link_type(_M_node)->_M_value_field; }
- pointer operator->() const { return &(operator*()); }
-
- _Self& operator++() { _M_increment(); return *this; }
- _Self operator++(int) {
- _Self __tmp = *this;
- _M_increment();
- return __tmp;
- }
-
- _Self& operator--() { _M_decrement(); return *this; }
- _Self operator--(int) {
- _Self __tmp = *this;
- _M_decrement();
- return __tmp;
+ else
+ { // __y == __z
+ __x_parent = __y->_M_parent;
+ if (__x)
+ __x->_M_parent = __y->_M_parent;
+ if (__root == __z)
+ __root = __x;
+ else
+ if (__z->_M_parent->_M_left == __z)
+ __z->_M_parent->_M_left = __x;
+ else
+ __z->_M_parent->_M_right = __x;
+ if (__leftmost == __z)
+ if (__z->_M_right == 0) // __z->_M_left must be null also
+ __leftmost = __z->_M_parent;
+ // makes __leftmost == _M_header if __z == __root
+ else
+ __leftmost = _Rb_tree_node_base::_S_minimum(__x);
+ if (__rightmost == __z)
+ if (__z->_M_left == 0) // __z->_M_right must be null also
+ __rightmost = __z->_M_parent;
+ // makes __rightmost == _M_header if __z == __root
+ else // __x == __z->_M_left
+ __rightmost = _Rb_tree_node_base::_S_maximum(__x);
+ }
+ if (__y->_M_color != _M_red)
+ {
+ while (__x != __root && (__x == 0 || __x->_M_color == _M_black))
+ if (__x == __x_parent->_M_left)
+ {
+ _Rb_tree_node_base* __w = __x_parent->_M_right;
+ if (__w->_M_color == _M_red)
+ {
+ __w->_M_color = _M_black;
+ __x_parent->_M_color = _M_red;
+ _Rb_tree_rotate_left(__x_parent, __root);
+ __w = __x_parent->_M_right;
+ }
+ if ((__w->_M_left == 0 ||
+ __w->_M_left->_M_color == _M_black) &&
+ (__w->_M_right == 0 ||
+ __w->_M_right->_M_color == _M_black))
+ {
+ __w->_M_color = _M_red;
+ __x = __x_parent;
+ __x_parent = __x_parent->_M_parent;
+ }
+ else
+ {
+ if (__w->_M_right == 0
+ || __w->_M_right->_M_color == _M_black)
+ {
+ if (__w->_M_left) __w->_M_left->_M_color = _M_black;
+ __w->_M_color = _M_red;
+ _Rb_tree_rotate_right(__w, __root);
+ __w = __x_parent->_M_right;
+ }
+ __w->_M_color = __x_parent->_M_color;
+ __x_parent->_M_color = _M_black;
+ if (__w->_M_right)
+ __w->_M_right->_M_color = _M_black;
+ _Rb_tree_rotate_left(__x_parent, __root);
+ break;
+ }
+ }
+ else
+ {
+ // same as above, with _M_right <-> _M_left.
+ _Rb_tree_node_base* __w = __x_parent->_M_left;
+ if (__w->_M_color == _M_red)
+ {
+ __w->_M_color = _M_black;
+ __x_parent->_M_color = _M_red;
+ _Rb_tree_rotate_right(__x_parent, __root);
+ __w = __x_parent->_M_left;
+ }
+ if ((__w->_M_right == 0 ||
+ __w->_M_right->_M_color == _M_black) &&
+ (__w->_M_left == 0 ||
+ __w->_M_left->_M_color == _M_black))
+ {
+ __w->_M_color = _M_red;
+ __x = __x_parent;
+ __x_parent = __x_parent->_M_parent;
+ }
+ else
+ {
+ if (__w->_M_left == 0 || __w->_M_left->_M_color == _M_black)
+ {
+ if (__w->_M_right) __w->_M_right->_M_color = _M_black;
+ __w->_M_color = _M_red;
+ _Rb_tree_rotate_left(__w, __root);
+ __w = __x_parent->_M_left;
+ }
+ __w->_M_color = __x_parent->_M_color;
+ __x_parent->_M_color = _M_black;
+ if (__w->_M_left)
+ __w->_M_left->_M_color = _M_black;
+ _Rb_tree_rotate_right(__x_parent, __root);
+ break;
+ }
+ }
+ if (__x) __x->_M_color = _M_black;
+ }
+ return __y;
}
-};
-
-template <class _Value, class _Ref, class _Ptr>
-inline bool operator==(const _Rb_tree_iterator<_Value, _Ref, _Ptr>& __x,
- const _Rb_tree_iterator<_Value, _Ref, _Ptr>& __y) {
- return __x._M_node == __y._M_node;
-}
-
-template <class _Value>
-inline bool operator==(const _Rb_tree_iterator<_Value, const _Value&, const _Value*>& __x,
- const _Rb_tree_iterator<_Value, _Value&, _Value*>& __y) {
- return __x._M_node == __y._M_node;
-}
-
-template <class _Value>
-inline bool operator==(const _Rb_tree_iterator<_Value, _Value&, _Value*>& __x,
- const _Rb_tree_iterator<_Value, const _Value&, const _Value*>& __y) {
- return __x._M_node == __y._M_node;
-}
-
-template <class _Value, class _Ref, class _Ptr>
-inline bool operator!=(const _Rb_tree_iterator<_Value, _Ref, _Ptr>& __x,
- const _Rb_tree_iterator<_Value, _Ref, _Ptr>& __y) {
- return __x._M_node != __y._M_node;
-}
-
-template <class _Value>
-inline bool operator!=(const _Rb_tree_iterator<_Value, const _Value&, const _Value*>& __x,
- const _Rb_tree_iterator<_Value, _Value&, _Value*>& __y) {
- return __x._M_node != __y._M_node;
-}
-
-template <class _Value>
-inline bool operator!=(const _Rb_tree_iterator<_Value, _Value&, _Value*>& __x,
- const _Rb_tree_iterator<_Value, const _Value&, const _Value*>& __y) {
- return __x._M_node != __y._M_node;
-}
-
-inline void
-_Rb_tree_rotate_left(_Rb_tree_node_base* __x, _Rb_tree_node_base*& __root)
-{
- _Rb_tree_node_base* __y = __x->_M_right;
- __x->_M_right = __y->_M_left;
- if (__y->_M_left !=0)
- __y->_M_left->_M_parent = __x;
- __y->_M_parent = __x->_M_parent;
-
- if (__x == __root)
- __root = __y;
- else if (__x == __x->_M_parent->_M_left)
- __x->_M_parent->_M_left = __y;
- else
- __x->_M_parent->_M_right = __y;
- __y->_M_left = __x;
- __x->_M_parent = __y;
-}
-
-inline void
-_Rb_tree_rotate_right(_Rb_tree_node_base* __x, _Rb_tree_node_base*& __root)
-{
- _Rb_tree_node_base* __y = __x->_M_left;
- __x->_M_left = __y->_M_right;
- if (__y->_M_right != 0)
- __y->_M_right->_M_parent = __x;
- __y->_M_parent = __x->_M_parent;
-
- if (__x == __root)
- __root = __y;
- else if (__x == __x->_M_parent->_M_right)
- __x->_M_parent->_M_right = __y;
- else
- __x->_M_parent->_M_left = __y;
- __y->_M_right = __x;
- __x->_M_parent = __y;
-}
-
-inline void
-_Rb_tree_rebalance(_Rb_tree_node_base* __x, _Rb_tree_node_base*& __root)
-{
- __x->_M_color = _S_rb_tree_red;
- while (__x != __root && __x->_M_parent->_M_color == _S_rb_tree_red) {
- if (__x->_M_parent == __x->_M_parent->_M_parent->_M_left) {
- _Rb_tree_node_base* __y = __x->_M_parent->_M_parent->_M_right;
- if (__y && __y->_M_color == _S_rb_tree_red) {
- __x->_M_parent->_M_color = _S_rb_tree_black;
- __y->_M_color = _S_rb_tree_black;
- __x->_M_parent->_M_parent->_M_color = _S_rb_tree_red;
- __x = __x->_M_parent->_M_parent;
+
+ // Base class to encapsulate the differences between old SGI-style
+ // allocators and standard-conforming allocators. In order to avoid
+ // having an empty base class, we arbitrarily move one of rb_tree's
+ // data members into the base class.
+
+ // _Base for general standard-conforming allocators.
+ template<typename _Tp, typename _Alloc, bool _S_instanceless>
+ class _Rb_tree_alloc_base
+ {
+ public:
+ typedef typename _Alloc_traits<_Tp, _Alloc>::allocator_type allocator_type;
+
+ allocator_type
+ get_allocator() const { return _M_node_allocator; }
+
+ _Rb_tree_alloc_base(const allocator_type& __a)
+ : _M_node_allocator(__a), _M_header(0) {}
+
+ protected:
+ typename _Alloc_traits<_Rb_tree_node<_Tp>, _Alloc>::allocator_type
+ _M_node_allocator;
+
+ _Rb_tree_node<_Tp>* _M_header;
+
+ _Rb_tree_node<_Tp>*
+ _M_get_node() { return _M_node_allocator.allocate(1); }
+
+ void
+ _M_put_node(_Rb_tree_node<_Tp>* __p)
+ { _M_node_allocator.deallocate(__p, 1); }
+ };
+
+ // Specialization for instanceless allocators.
+ template<typename _Tp, typename _Alloc>
+ class _Rb_tree_alloc_base<_Tp, _Alloc, true>
+ {
+ public:
+ typedef typename _Alloc_traits<_Tp, _Alloc>::allocator_type allocator_type;
+ allocator_type get_allocator() const { return allocator_type(); }
+
+ _Rb_tree_alloc_base(const allocator_type&) : _M_header(0) {}
+
+ protected:
+ _Rb_tree_node<_Tp>* _M_header;
+
+ typedef typename _Alloc_traits<_Rb_tree_node<_Tp>, _Alloc>::_Alloc_type
+ _Alloc_type;
+
+ _Rb_tree_node<_Tp>*
+ _M_get_node() { return _Alloc_type::allocate(1); }
+
+ void
+ _M_put_node(_Rb_tree_node<_Tp>* __p) { _Alloc_type::deallocate(__p, 1); }
+ };
+
+ template<typename _Tp, typename _Alloc>
+ struct _Rb_tree_base : public _Rb_tree_alloc_base<_Tp, _Alloc,
+ _Alloc_traits<_Tp, _Alloc>::_S_instanceless>
+ {
+ typedef _Rb_tree_alloc_base<_Tp,
+ _Alloc, _Alloc_traits<_Tp, _Alloc>::_S_instanceless> _Base;
+ typedef typename _Base::allocator_type allocator_type;
+
+ _Rb_tree_base(const allocator_type& __a)
+ : _Base(__a) { _M_header = _M_get_node(); }
+ ~_Rb_tree_base() { _M_put_node(_M_header); }
+ };
+
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc = allocator<_Val> >
+ class _Rb_tree : protected _Rb_tree_base<_Val, _Alloc>
+ {
+ typedef _Rb_tree_base<_Val, _Alloc> _Base;
+
+ protected:
+ typedef _Rb_tree_node_base* _Base_ptr;
+ typedef _Rb_tree_node<_Val> _Rb_tree_node;
+
+ public:
+ typedef _Key key_type;
+ typedef _Val value_type;
+ typedef value_type* pointer;
+ typedef const value_type* const_pointer;
+ typedef value_type& reference;
+ typedef const value_type& const_reference;
+ typedef _Rb_tree_node* _Link_type;
+ typedef size_t size_type;
+ typedef ptrdiff_t difference_type;
+
+ typedef typename _Base::allocator_type allocator_type;
+ allocator_type get_allocator() const { return _Base::get_allocator(); }
+
+ protected:
+ using _Base::_M_get_node;
+ using _Base::_M_put_node;
+ using _Base::_M_header;
+
+ _Link_type
+ _M_create_node(const value_type& __x)
+ {
+ _Link_type __tmp = _M_get_node();
+ try
+ { _Construct(&__tmp->_M_value_field, __x); }
+ catch(...)
+ {
+ _M_put_node(__tmp);
+ __throw_exception_again;
+ }
+ return __tmp;
}
- else {
- if (__x == __x->_M_parent->_M_right) {
- __x = __x->_M_parent;
- _Rb_tree_rotate_left(__x, __root);
- }
- __x->_M_parent->_M_color = _S_rb_tree_black;
- __x->_M_parent->_M_parent->_M_color = _S_rb_tree_red;
- _Rb_tree_rotate_right(__x->_M_parent->_M_parent, __root);
+
+ _Link_type
+ _M_clone_node(_Link_type __x)
+ {
+ _Link_type __tmp = _M_create_node(__x->_M_value_field);
+ __tmp->_M_color = __x->_M_color;
+ __tmp->_M_left = 0;
+ __tmp->_M_right = 0;
+ return __tmp;
}
- }
- else {
- _Rb_tree_node_base* __y = __x->_M_parent->_M_parent->_M_left;
- if (__y && __y->_M_color == _S_rb_tree_red) {
- __x->_M_parent->_M_color = _S_rb_tree_black;
- __y->_M_color = _S_rb_tree_black;
- __x->_M_parent->_M_parent->_M_color = _S_rb_tree_red;
- __x = __x->_M_parent->_M_parent;
+
+ void
+ destroy_node(_Link_type __p)
+ {
+ _Destroy(&__p->_M_value_field);
+ _M_put_node(__p);
+ }
+
+ size_type _M_node_count; // keeps track of size of tree
+ _Compare _M_key_compare;
+
+ _Link_type&
+ _M_root() const { return (_Link_type&) _M_header->_M_parent; }
+
+ _Link_type&
+ _M_leftmost() const { return (_Link_type&) _M_header->_M_left; }
+
+ _Link_type&
+ _M_rightmost() const { return (_Link_type&) _M_header->_M_right; }
+
+ static _Link_type&
+ _S_left(_Link_type __x) { return (_Link_type&)(__x->_M_left); }
+
+ static _Link_type&
+ _S_right(_Link_type __x) { return (_Link_type&)(__x->_M_right); }
+
+ static _Link_type&
+ _S_parent(_Link_type __x) { return (_Link_type&)(__x->_M_parent); }
+
+ static reference
+ _S_value(_Link_type __x) { return __x->_M_value_field; }
+
+ static const _Key&
+ _S_key(_Link_type __x) { return _KeyOfValue()(_S_value(__x)); }
+
+ static _Rb_tree_color&
+ _S_color(_Link_type __x) { return __x->_M_color; }
+
+ static _Link_type&
+ _S_left(_Base_ptr __x) { return (_Link_type&)(__x->_M_left); }
+
+ static _Link_type&
+ _S_right(_Base_ptr __x) { return (_Link_type&)(__x->_M_right); }
+
+ static _Link_type&
+ _S_parent(_Base_ptr __x) { return (_Link_type&)(__x->_M_parent); }
+
+ static reference
+ _S_value(_Base_ptr __x) { return ((_Link_type)__x)->_M_value_field; }
+
+ static const _Key&
+ _S_key(_Base_ptr __x) { return _KeyOfValue()(_S_value(_Link_type(__x)));}
+
+ static _Rb_tree_color&
+ _S_color(_Base_ptr __x) { return (_Link_type(__x)->_M_color); }
+
+ static _Link_type
+ _S_minimum(_Link_type __x)
+ { return (_Link_type) _Rb_tree_node_base::_S_minimum(__x); }
+
+ static _Link_type
+ _S_maximum(_Link_type __x)
+ { return (_Link_type) _Rb_tree_node_base::_S_maximum(__x); }
+
+ public:
+ typedef _Rb_tree_iterator<value_type, reference, pointer> iterator;
+ typedef _Rb_tree_iterator<value_type, const_reference, const_pointer>
+ const_iterator;
+
+ typedef reverse_iterator<const_iterator> const_reverse_iterator;
+ typedef reverse_iterator<iterator> reverse_iterator;
+
+ private:
+ iterator
+ _M_insert(_Base_ptr __x, _Base_ptr __y, const value_type& __v);
+
+ _Link_type
+ _M_copy(_Link_type __x, _Link_type __p);
+
+ void
+ _M_erase(_Link_type __x);
+
+ public:
+ // allocation/deallocation
+ _Rb_tree()
+ : _Base(allocator_type()), _M_node_count(0), _M_key_compare()
+ { _M_empty_initialize(); }
+
+ _Rb_tree(const _Compare& __comp)
+ : _Base(allocator_type()), _M_node_count(0), _M_key_compare(__comp)
+ { _M_empty_initialize(); }
+
+ _Rb_tree(const _Compare& __comp, const allocator_type& __a)
+ : _Base(__a), _M_node_count(0), _M_key_compare(__comp)
+ { _M_empty_initialize(); }
+
+ _Rb_tree(const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __x)
+ : _Base(__x.get_allocator()), _M_node_count(0),
+ _M_key_compare(__x._M_key_compare)
+ {
+ if (__x._M_root() == 0)
+ _M_empty_initialize();
+ else
+ {
+ _S_color(_M_header) = _M_red;
+ _M_root() = _M_copy(__x._M_root(), _M_header);
+ _M_leftmost() = _S_minimum(_M_root());
+ _M_rightmost() = _S_maximum(_M_root());
+ }
+ _M_node_count = __x._M_node_count;
}
- else {
- if (__x == __x->_M_parent->_M_left) {
- __x = __x->_M_parent;
- _Rb_tree_rotate_right(__x, __root);
- }
- __x->_M_parent->_M_color = _S_rb_tree_black;
- __x->_M_parent->_M_parent->_M_color = _S_rb_tree_red;
- _Rb_tree_rotate_left(__x->_M_parent->_M_parent, __root);
+
+ ~_Rb_tree() { clear(); }
+
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>&
+ operator=(const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __x);
+
+ private:
+ void _M_empty_initialize()
+ {
+ _S_color(_M_header) = _M_red; // used to distinguish header from
+ // __root, in iterator.operator++
+ _M_root() = 0;
+ _M_leftmost() = _M_header;
+ _M_rightmost() = _M_header;
+ }
+
+ public:
+ // Accessors.
+ _Compare
+ key_comp() const { return _M_key_compare; }
+
+ iterator
+ begin() { return _M_leftmost(); }
+
+ const_iterator
+ begin() const { return _M_leftmost(); }
+
+ iterator
+ end() { return _M_header; }
+
+ const_iterator
+ end() const { return _M_header; }
+
+ 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()); }
+
+ bool
+ empty() const { return _M_node_count == 0; }
+
+ size_type
+ size() const { return _M_node_count; }
+
+ size_type
+ max_size() const { return size_type(-1); }
+
+ void
+ swap(_Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __t)
+ {
+ std::swap(_M_header, __t._M_header);
+ std::swap(_M_node_count, __t._M_node_count);
+ std::swap(_M_key_compare, __t._M_key_compare);
}
+
+ // Insert/erase.
+ pair<iterator,bool>
+ insert_unique(const value_type& __x);
+
+ iterator
+ insert_equal(const value_type& __x);
+
+ iterator
+ insert_unique(iterator __position, const value_type& __x);
+
+ iterator
+ insert_equal(iterator __position, const value_type& __x);
+
+ template<typename _InputIterator>
+ void
+ insert_unique(_InputIterator __first, _InputIterator __last);
+
+ template<typename _InputIterator>
+ void
+ insert_equal(_InputIterator __first, _InputIterator __last);
+
+ void
+ erase(iterator __position);
+
+ size_type
+ erase(const key_type& __x);
+
+ void
+ erase(iterator __first, iterator __last);
+
+ void
+ erase(const key_type* __first, const key_type* __last);
+
+ void
+ clear()
+ {
+ if (_M_node_count != 0)
+ {
+ _M_erase(_M_root());
+ _M_leftmost() = _M_header;
+ _M_root() = 0;
+ _M_rightmost() = _M_header;
+ _M_node_count = 0;
+ }
+ }
+
+ // Set operations.
+ iterator
+ find(const key_type& __x);
+
+ const_iterator
+ find(const key_type& __x) const;
+
+ size_type
+ count(const key_type& __x) const;
+
+ iterator
+ lower_bound(const key_type& __x);
+
+ const_iterator
+ lower_bound(const key_type& __x) const;
+
+ iterator
+ upper_bound(const key_type& __x);
+
+ const_iterator
+ upper_bound(const key_type& __x) const;
+
+ pair<iterator,iterator>
+ equal_range(const key_type& __x);
+
+ pair<const_iterator, const_iterator>
+ equal_range(const key_type& __x) const;
+
+ // Debugging.
+ bool
+ __rb_verify() const;
+ };
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ inline bool
+ operator==(const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __x,
+ const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __y)
+ {
+ return __x.size() == __y.size() &&
+ equal(__x.begin(), __x.end(), __y.begin());
}
- }
- __root->_M_color = _S_rb_tree_black;
-}
-
-inline _Rb_tree_node_base*
-_Rb_tree_rebalance_for_erase(_Rb_tree_node_base* __z,
- _Rb_tree_node_base*& __root,
- _Rb_tree_node_base*& __leftmost,
- _Rb_tree_node_base*& __rightmost)
-{
- _Rb_tree_node_base* __y = __z;
- _Rb_tree_node_base* __x = 0;
- _Rb_tree_node_base* __x_parent = 0;
- if (__y->_M_left == 0) // __z has at most one non-null child. y == z.
- __x = __y->_M_right; // __x might be null.
- else
- if (__y->_M_right == 0) // __z has exactly one non-null child. y == z.
- __x = __y->_M_left; // __x is not null.
- else { // __z has two non-null children. Set __y to
- __y = __y->_M_right; // __z's successor. __x might be null.
- while (__y->_M_left != 0)
- __y = __y->_M_left;
- __x = __y->_M_right;
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ inline bool
+ operator<(const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __x,
+ const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __y)
+ {
+ return lexicographical_compare(__x.begin(), __x.end(),
+ __y.begin(), __y.end());
}
- if (__y != __z) { // relink y in place of z. y is z's successor
- __z->_M_left->_M_parent = __y;
- __y->_M_left = __z->_M_left;
- if (__y != __z->_M_right) {
- __x_parent = __y->_M_parent;
- if (__x) __x->_M_parent = __y->_M_parent;
- __y->_M_parent->_M_left = __x; // __y must be a child of _M_left
- __y->_M_right = __z->_M_right;
- __z->_M_right->_M_parent = __y;
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ inline bool
+ operator!=(const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __x,
+ const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __y)
+ { return !(__x == __y); }
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ inline bool
+ operator>(const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __x,
+ const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __y)
+ { return __y < __x; }
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ inline bool
+ operator<=(const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __x,
+ const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __y)
+ { return !(__y < __x); }
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ inline bool
+ operator>=(const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __x,
+ const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __y)
+ { return !(__x < __y); }
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ inline void
+ swap(_Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __x,
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __y)
+ { __x.swap(__y); }
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>&
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::
+ operator=(const _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>& __x)
+ {
+ if (this != &__x)
+ {
+ // Note that _Key may be a constant type.
+ clear();
+ _M_node_count = 0;
+ _M_key_compare = __x._M_key_compare;
+ if (__x._M_root() == 0)
+ {
+ _M_root() = 0;
+ _M_leftmost() = _M_header;
+ _M_rightmost() = _M_header;
+ }
+ else
+ {
+ _M_root() = _M_copy(__x._M_root(), _M_header);
+ _M_leftmost() = _S_minimum(_M_root());
+ _M_rightmost() = _S_maximum(_M_root());
+ _M_node_count = __x._M_node_count;
+ }
+ }
+ return *this;
}
- else
- __x_parent = __y;
- if (__root == __z)
- __root = __y;
- else if (__z->_M_parent->_M_left == __z)
- __z->_M_parent->_M_left = __y;
- else
- __z->_M_parent->_M_right = __y;
- __y->_M_parent = __z->_M_parent;
- std::swap(__y->_M_color, __z->_M_color);
- __y = __z;
- // __y now points to node to be actually deleted
- }
- else { // __y == __z
- __x_parent = __y->_M_parent;
- if (__x) __x->_M_parent = __y->_M_parent;
- if (__root == __z)
- __root = __x;
- else
- if (__z->_M_parent->_M_left == __z)
- __z->_M_parent->_M_left = __x;
- else
- __z->_M_parent->_M_right = __x;
- if (__leftmost == __z)
- if (__z->_M_right == 0) // __z->_M_left must be null also
- __leftmost = __z->_M_parent;
- // makes __leftmost == _M_header if __z == __root
- else
- __leftmost = _Rb_tree_node_base::_S_minimum(__x);
- if (__rightmost == __z)
- if (__z->_M_left == 0) // __z->_M_right must be null also
- __rightmost = __z->_M_parent;
- // makes __rightmost == _M_header if __z == __root
- else // __x == __z->_M_left
- __rightmost = _Rb_tree_node_base::_S_maximum(__x);
- }
- if (__y->_M_color != _S_rb_tree_red) {
- while (__x != __root && (__x == 0 || __x->_M_color == _S_rb_tree_black))
- if (__x == __x_parent->_M_left) {
- _Rb_tree_node_base* __w = __x_parent->_M_right;
- if (__w->_M_color == _S_rb_tree_red) {
- __w->_M_color = _S_rb_tree_black;
- __x_parent->_M_color = _S_rb_tree_red;
- _Rb_tree_rotate_left(__x_parent, __root);
- __w = __x_parent->_M_right;
- }
- if ((__w->_M_left == 0 ||
- __w->_M_left->_M_color == _S_rb_tree_black) &&
- (__w->_M_right == 0 ||
- __w->_M_right->_M_color == _S_rb_tree_black)) {
- __w->_M_color = _S_rb_tree_red;
- __x = __x_parent;
- __x_parent = __x_parent->_M_parent;
- } else {
- if (__w->_M_right == 0 ||
- __w->_M_right->_M_color == _S_rb_tree_black) {
- if (__w->_M_left) __w->_M_left->_M_color = _S_rb_tree_black;
- __w->_M_color = _S_rb_tree_red;
- _Rb_tree_rotate_right(__w, __root);
- __w = __x_parent->_M_right;
- }
- __w->_M_color = __x_parent->_M_color;
- __x_parent->_M_color = _S_rb_tree_black;
- if (__w->_M_right) __w->_M_right->_M_color = _S_rb_tree_black;
- _Rb_tree_rotate_left(__x_parent, __root);
- break;
- }
- } else { // same as above, with _M_right <-> _M_left.
- _Rb_tree_node_base* __w = __x_parent->_M_left;
- if (__w->_M_color == _S_rb_tree_red) {
- __w->_M_color = _S_rb_tree_black;
- __x_parent->_M_color = _S_rb_tree_red;
- _Rb_tree_rotate_right(__x_parent, __root);
- __w = __x_parent->_M_left;
- }
- if ((__w->_M_right == 0 ||
- __w->_M_right->_M_color == _S_rb_tree_black) &&
- (__w->_M_left == 0 ||
- __w->_M_left->_M_color == _S_rb_tree_black)) {
- __w->_M_color = _S_rb_tree_red;
- __x = __x_parent;
- __x_parent = __x_parent->_M_parent;
- } else {
- if (__w->_M_left == 0 ||
- __w->_M_left->_M_color == _S_rb_tree_black) {
- if (__w->_M_right) __w->_M_right->_M_color = _S_rb_tree_black;
- __w->_M_color = _S_rb_tree_red;
- _Rb_tree_rotate_left(__w, __root);
- __w = __x_parent->_M_left;
- }
- __w->_M_color = __x_parent->_M_color;
- __x_parent->_M_color = _S_rb_tree_black;
- if (__w->_M_left) __w->_M_left->_M_color = _S_rb_tree_black;
- _Rb_tree_rotate_right(__x_parent, __root);
- break;
- }
- }
- if (__x) __x->_M_color = _S_rb_tree_black;
- }
- return __y;
-}
-
-// Base class to encapsulate the differences between old SGI-style
-// allocators and standard-conforming allocators. In order to avoid
-// having an empty base class, we arbitrarily move one of rb_tree's
-// data members into the base class.
-
-// _Base for general standard-conforming allocators.
-template <class _Tp, class _Alloc, bool _S_instanceless>
-class _Rb_tree_alloc_base {
-public:
- typedef typename _Alloc_traits<_Tp, _Alloc>::allocator_type allocator_type;
- allocator_type get_allocator() const { return _M_node_allocator; }
-
- _Rb_tree_alloc_base(const allocator_type& __a)
- : _M_node_allocator(__a), _M_header(0) {}
-
-protected:
- typename _Alloc_traits<_Rb_tree_node<_Tp>, _Alloc>::allocator_type
- _M_node_allocator;
- _Rb_tree_node<_Tp>* _M_header;
-
- _Rb_tree_node<_Tp>* _M_get_node()
- { return _M_node_allocator.allocate(1); }
- void _M_put_node(_Rb_tree_node<_Tp>* __p)
- { _M_node_allocator.deallocate(__p, 1); }
-};
-
-// Specialization for instanceless allocators.
-template <class _Tp, class _Alloc>
-class _Rb_tree_alloc_base<_Tp, _Alloc, true> {
-public:
- typedef typename _Alloc_traits<_Tp, _Alloc>::allocator_type allocator_type;
- allocator_type get_allocator() const { return allocator_type(); }
-
- _Rb_tree_alloc_base(const allocator_type&) : _M_header(0) {}
-
-protected:
- _Rb_tree_node<_Tp>* _M_header;
-
- typedef typename _Alloc_traits<_Rb_tree_node<_Tp>, _Alloc>::_Alloc_type
- _Alloc_type;
-
- _Rb_tree_node<_Tp>* _M_get_node()
- { return _Alloc_type::allocate(1); }
- void _M_put_node(_Rb_tree_node<_Tp>* __p)
- { _Alloc_type::deallocate(__p, 1); }
-};
-
-template <class _Tp, class _Alloc>
-struct _Rb_tree_base
- : public _Rb_tree_alloc_base<_Tp, _Alloc,
- _Alloc_traits<_Tp, _Alloc>::_S_instanceless>
-{
- typedef _Rb_tree_alloc_base<_Tp, _Alloc,
- _Alloc_traits<_Tp, _Alloc>::_S_instanceless>
- _Base;
- typedef typename _Base::allocator_type allocator_type;
-
- _Rb_tree_base(const allocator_type& __a)
- : _Base(__a) { _M_header = _M_get_node(); }
- ~_Rb_tree_base() { _M_put_node(_M_header); }
-
-};
-
-
-template <class _Key, class _Value, class _KeyOfValue, class _Compare,
- class _Alloc = allocator<_Value> >
-class _Rb_tree : protected _Rb_tree_base<_Value, _Alloc> {
- typedef _Rb_tree_base<_Value, _Alloc> _Base;
-protected:
- typedef _Rb_tree_node_base* _Base_ptr;
- typedef _Rb_tree_node<_Value> _Rb_tree_node;
- typedef _Rb_tree_Color_type _Color_type;
-public:
- typedef _Key key_type;
- typedef _Value value_type;
- typedef value_type* pointer;
- typedef const value_type* const_pointer;
- typedef value_type& reference;
- typedef const value_type& const_reference;
- typedef _Rb_tree_node* _Link_type;
- typedef size_t size_type;
- typedef ptrdiff_t difference_type;
-
- typedef typename _Base::allocator_type allocator_type;
- allocator_type get_allocator() const { return _Base::get_allocator(); }
-
-protected:
- using _Base::_M_get_node;
- using _Base::_M_put_node;
- using _Base::_M_header;
-
-protected:
-
- _Link_type
- _M_create_node(const value_type& __x)
- {
- _Link_type __tmp = _M_get_node();
- try {
- _Construct(&__tmp->_M_value_field, __x);
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::iterator
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::
+ _M_insert(_Base_ptr __x_, _Base_ptr __y_, const _Val& __v)
+ {
+ _Link_type __x = (_Link_type) __x_;
+ _Link_type __y = (_Link_type) __y_;
+ _Link_type __z;
+
+ if (__y == _M_header || __x != 0 ||
+ _M_key_compare(_KeyOfValue()(__v), _S_key(__y)))
+ {
+ __z = _M_create_node(__v);
+ _S_left(__y) = __z; // also makes _M_leftmost() = __z
+ // when __y == _M_header
+ if (__y == _M_header)
+ {
+ _M_root() = __z;
+ _M_rightmost() = __z;
+ }
+ else if (__y == _M_leftmost())
+ _M_leftmost() = __z; // maintain _M_leftmost() pointing to min node
+ }
+ else
+ {
+ __z = _M_create_node(__v);
+ _S_right(__y) = __z;
+ // Maintain _M_rightmost() pointing to max node.
+ if (__y == _M_rightmost())
+ _M_rightmost() = __z;
+ }
+ _S_parent(__z) = __y;
+ _S_left(__z) = 0;
+ _S_right(__z) = 0;
+ _Rb_tree_rebalance(__z, _M_header->_M_parent);
+ ++_M_node_count;
+ return iterator(__z);
+ }
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::iterator
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::
+ insert_equal(const _Val& __v)
+ {
+ _Link_type __y = _M_header;
+ _Link_type __x = _M_root();
+ while (__x != 0)
+ {
+ __y = __x;
+ __x = _M_key_compare(_KeyOfValue()(__v), _S_key(__x)) ?
+ _S_left(__x) : _S_right(__x);
+ }
+ return _M_insert(__x, __y, __v);
+ }
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ pair<typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::iterator,
+ bool>
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::
+ insert_unique(const _Val& __v)
+ {
+ _Link_type __y = _M_header;
+ _Link_type __x = _M_root();
+ bool __comp = true;
+ while (__x != 0)
+ {
+ __y = __x;
+ __comp = _M_key_compare(_KeyOfValue()(__v), _S_key(__x));
+ __x = __comp ? _S_left(__x) : _S_right(__x);
+ }
+ iterator __j = iterator(__y);
+ if (__comp)
+ if (__j == begin())
+ return pair<iterator,bool>(_M_insert(__x, __y, __v), true);
+ else
+ --__j;
+ if (_M_key_compare(_S_key(__j._M_node), _KeyOfValue()(__v)))
+ return pair<iterator,bool>(_M_insert(__x, __y, __v), true);
+ return pair<iterator,bool>(__j, false);
+ }
+
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
+ _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::
+ insert_unique(iterator __position, const _Val& __v)
+ {
+ if (__position._M_node == _M_header->_M_left)
+ {
+ // begin()
+ if (size() > 0 &&
+ _M_key_compare(_KeyOfValue()(__v), _S_key(__position._M_node)))
+ return _M_insert(__position._M_node, __position._M_node, __v);
+ // first argument just needs to be non-null
+ else
+ return insert_unique(__v).first;
+ }
+ else if (__position._M_node == _M_header)
+ {
+ // end()
+ if (_M_key_compare(_S_key(_M_rightmost()), _KeyOfValue()(__v)))
+ return _M_insert(0, _M_rightmost(), __v);
+ else
+ return insert_unique(__v).first;
+ }
+ else
+ {
+ iterator __before = __position;
+ --__before;
+ if (_M_key_compare(_S_key(__before._M_node), _KeyOfValue()(__v))
+ && _M_key_compare(_KeyOfValue()(__v),_S_key(__position._M_node)))
+ {
+ if (_S_right(__before._M_node) == 0)
+ return _M_insert(0, __before._M_node, __v);
+ else
+ return _M_insert(__position._M_node, __position._M_node, __v);
+ // first argument just needs to be non-null
+ }
+ else
+ return insert_unique(__v).first;
+ }
}
- catch(...)
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::iterator
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::
+ insert_equal(iterator __position, const _Val& __v)
+ {
+ if (__position._M_node == _M_header->_M_left)
+ {
+ // begin()
+ if (size() > 0 &&
+ !_M_key_compare(_S_key(__position._M_node), _KeyOfValue()(__v)))
+ return _M_insert(__position._M_node, __position._M_node, __v);
+ // first argument just needs to be non-null
+ else
+ return insert_equal(__v);
+ }
+ else if (__position._M_node == _M_header)
+ {
+ // end()
+ if (!_M_key_compare(_KeyOfValue()(__v), _S_key(_M_rightmost())))
+ return _M_insert(0, _M_rightmost(), __v);
+ else
+ return insert_equal(__v);
+ }
+ else
+ {
+ iterator __before = __position;
+ --__before;
+ if (!_M_key_compare(_KeyOfValue()(__v), _S_key(__before._M_node))
+ && !_M_key_compare(_S_key(__position._M_node),
+ _KeyOfValue()(__v)))
+ {
+ if (_S_right(__before._M_node) == 0)
+ return _M_insert(0, __before._M_node, __v);
+ else
+ return _M_insert(__position._M_node, __position._M_node, __v);
+ // first argument just needs to be non-null
+ }
+ else
+ return insert_equal(__v);
+ }
+ }
+
+ template<typename _Key, typename _Val, typename _KoV,
+ typename _Cmp, typename _Alloc>
+ template<class _II>
+ void
+ _Rb_tree<_Key,_Val,_KoV,_Cmp,_Alloc>::
+ insert_equal(_II __first, _II __last)
{
- _M_put_node(__tmp);
- __throw_exception_again;
+ for ( ; __first != __last; ++__first)
+ insert_equal(*__first);
}
- return __tmp;
- }
- _Link_type _M_clone_node(_Link_type __x)
- {
- _Link_type __tmp = _M_create_node(__x->_M_value_field);
- __tmp->_M_color = __x->_M_color;
- __tmp->_M_left = 0;
- __tmp->_M_right = 0;
- return __tmp;
- }
+ template<typename _Key, typename _Val, typename _KoV,
+ typename _Cmp, typename _Alloc>
+ template<class _II>
+ void
+ _Rb_tree<_Key,_Val,_KoV,_Cmp,_Alloc>::
+ insert_unique(_II __first, _II __last)
+ {
+ for ( ; __first != __last; ++__first)
+ insert_unique(*__first);
+ }
- void
- destroy_node(_Link_type __p)
- {
- _Destroy(&__p->_M_value_field);
- _M_put_node(__p);
- }
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ inline void
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::erase(iterator __position)
+ {
+ _Link_type __y =
+ (_Link_type) _Rb_tree_rebalance_for_erase(__position._M_node,
+ _M_header->_M_parent,
+ _M_header->_M_left,
+ _M_header->_M_right);
+ destroy_node(__y);
+ --_M_node_count;
+ }
-protected:
- size_type _M_node_count; // keeps track of size of tree
- _Compare _M_key_compare;
-
- _Link_type& _M_root() const
- { return (_Link_type&) _M_header->_M_parent; }
- _Link_type& _M_leftmost() const
- { return (_Link_type&) _M_header->_M_left; }
- _Link_type& _M_rightmost() const
- { return (_Link_type&) _M_header->_M_right; }
-
- static _Link_type& _S_left(_Link_type __x)
- { return (_Link_type&)(__x->_M_left); }
- static _Link_type& _S_right(_Link_type __x)
- { return (_Link_type&)(__x->_M_right); }
- static _Link_type& _S_parent(_Link_type __x)
- { return (_Link_type&)(__x->_M_parent); }
- static reference _S_value(_Link_type __x)
- { return __x->_M_value_field; }
- static const _Key& _S_key(_Link_type __x)
- { return _KeyOfValue()(_S_value(__x)); }
- static _Color_type& _S_color(_Link_type __x)
- { return (_Color_type&)(__x->_M_color); }
-
- static _Link_type& _S_left(_Base_ptr __x)
- { return (_Link_type&)(__x->_M_left); }
- static _Link_type& _S_right(_Base_ptr __x)
- { return (_Link_type&)(__x->_M_right); }
- static _Link_type& _S_parent(_Base_ptr __x)
- { return (_Link_type&)(__x->_M_parent); }
- static reference _S_value(_Base_ptr __x)
- { return ((_Link_type)__x)->_M_value_field; }
- static const _Key& _S_key(_Base_ptr __x)
- { return _KeyOfValue()(_S_value(_Link_type(__x)));}
- static _Color_type& _S_color(_Base_ptr __x)
- { return (_Color_type&)(_Link_type(__x)->_M_color); }
-
- static _Link_type _S_minimum(_Link_type __x)
- { return (_Link_type) _Rb_tree_node_base::_S_minimum(__x); }
-
- static _Link_type _S_maximum(_Link_type __x)
- { return (_Link_type) _Rb_tree_node_base::_S_maximum(__x); }
-
-public:
- typedef _Rb_tree_iterator<value_type, reference, pointer> iterator;
- typedef _Rb_tree_iterator<value_type, const_reference, const_pointer>
- const_iterator;
-
- typedef reverse_iterator<const_iterator> const_reverse_iterator;
- typedef reverse_iterator<iterator> reverse_iterator;
-
-private:
- iterator _M_insert(_Base_ptr __x, _Base_ptr __y, const value_type& __v);
- _Link_type _M_copy(_Link_type __x, _Link_type __p);
- void _M_erase(_Link_type __x);
-
-public:
- // allocation/deallocation
- _Rb_tree()
- : _Base(allocator_type()), _M_node_count(0), _M_key_compare()
- { _M_empty_initialize(); }
-
- _Rb_tree(const _Compare& __comp)
- : _Base(allocator_type()), _M_node_count(0), _M_key_compare(__comp)
- { _M_empty_initialize(); }
-
- _Rb_tree(const _Compare& __comp, const allocator_type& __a)
- : _Base(__a), _M_node_count(0), _M_key_compare(__comp)
- { _M_empty_initialize(); }
-
- _Rb_tree(const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __x)
- : _Base(__x.get_allocator()),
- _M_node_count(0), _M_key_compare(__x._M_key_compare)
- {
- if (__x._M_root() == 0)
- _M_empty_initialize();
- else {
- _S_color(_M_header) = _S_rb_tree_red;
- _M_root() = _M_copy(__x._M_root(), _M_header);
- _M_leftmost() = _S_minimum(_M_root());
- _M_rightmost() = _S_maximum(_M_root());
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::size_type
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::erase(const _Key& __x)
+ {
+ pair<iterator,iterator> __p = equal_range(__x);
+ size_type __n = distance(__p.first, __p.second);
+ erase(__p.first, __p.second);
+ return __n;
}
- _M_node_count = __x._M_node_count;
- }
- ~_Rb_tree() { clear(); }
- _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>&
- operator=(const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __x);
-
-private:
- void _M_empty_initialize() {
- _S_color(_M_header) = _S_rb_tree_red; // used to distinguish header from
- // __root, in iterator.operator++
- _M_root() = 0;
- _M_leftmost() = _M_header;
- _M_rightmost() = _M_header;
- }
-public:
- // accessors:
- _Compare key_comp() const { return _M_key_compare; }
- iterator begin() { return _M_leftmost(); }
- const_iterator begin() const { return _M_leftmost(); }
- iterator end() { return _M_header; }
- const_iterator end() const { return _M_header; }
- 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());
- }
- bool empty() const { return _M_node_count == 0; }
- size_type size() const { return _M_node_count; }
- size_type max_size() const { return size_type(-1); }
-
- void swap(_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __t) {
- std::swap(_M_header, __t._M_header);
- std::swap(_M_node_count, __t._M_node_count);
- std::swap(_M_key_compare, __t._M_key_compare);
- }
-
-public:
- // insert/erase
- pair<iterator,bool> insert_unique(const value_type& __x);
- iterator insert_equal(const value_type& __x);
-
- iterator insert_unique(iterator __position, const value_type& __x);
- iterator insert_equal(iterator __position, const value_type& __x);
-
- template <class _InputIterator>
- void insert_unique(_InputIterator __first, _InputIterator __last);
- template <class _InputIterator>
- void insert_equal(_InputIterator __first, _InputIterator __last);
-
- void erase(iterator __position);
- size_type erase(const key_type& __x);
- void erase(iterator __first, iterator __last);
- void erase(const key_type* __first, const key_type* __last);
- void clear() {
- if (_M_node_count != 0) {
- _M_erase(_M_root());
- _M_leftmost() = _M_header;
- _M_root() = 0;
- _M_rightmost() = _M_header;
- _M_node_count = 0;
+ template<typename _Key, typename _Val, typename _KoV,
+ typename _Compare, typename _Alloc>
+ typename _Rb_tree<_Key, _Val, _KoV, _Compare, _Alloc>::_Link_type
+ _Rb_tree<_Key,_Val,_KoV,_Compare,_Alloc>::
+ _M_copy(_Link_type __x, _Link_type __p)
+ {
+ // Structural copy. __x and __p must be non-null.
+ _Link_type __top = _M_clone_node(__x);
+ __top->_M_parent = __p;
+
+ try
+ {
+ if (__x->_M_right)
+ __top->_M_right = _M_copy(_S_right(__x), __top);
+ __p = __top;
+ __x = _S_left(__x);
+
+ while (__x != 0)
+ {
+ _Link_type __y = _M_clone_node(__x);
+ __p->_M_left = __y;
+ __y->_M_parent = __p;
+ if (__x->_M_right)
+ __y->_M_right = _M_copy(_S_right(__x), __y);
+ __p = __y;
+ __x = _S_left(__x);
+ }
+ }
+ catch(...)
+ {
+ _M_erase(__top);
+ __throw_exception_again;
+ }
+ return __top;
}
- }
-
-public:
- // set operations:
- iterator find(const key_type& __x);
- const_iterator find(const key_type& __x) const;
- size_type count(const key_type& __x) const;
- iterator lower_bound(const key_type& __x);
- const_iterator lower_bound(const key_type& __x) const;
- iterator upper_bound(const key_type& __x);
- const_iterator upper_bound(const key_type& __x) const;
- pair<iterator,iterator> equal_range(const key_type& __x);
- pair<const_iterator, const_iterator> equal_range(const key_type& __x) const;
-
-public:
- // Debugging.
- bool __rb_verify() const;
-};
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-inline bool
-operator==(const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __x,
- const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __y)
-{
- return __x.size() == __y.size() &&
- equal(__x.begin(), __x.end(), __y.begin());
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-inline bool
-operator<(const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __x,
- const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __y)
-{
- return lexicographical_compare(__x.begin(), __x.end(),
- __y.begin(), __y.end());
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-inline bool
-operator!=(const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __x,
- const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __y) {
- return !(__x == __y);
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-inline bool
-operator>(const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __x,
- const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __y) {
- return __y < __x;
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-inline bool
-operator<=(const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __x,
- const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __y) {
- return !(__y < __x);
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-inline bool
-operator>=(const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __x,
- const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __y) {
- return !(__x < __y);
-}
-
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-inline void
-swap(_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __x,
- _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __y)
-{
- __x.swap(__y);
-}
-
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>&
-_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>
- ::operator=(const _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>& __x)
-{
- if (this != &__x) {
- // Note that _Key may be a constant type.
- clear();
- _M_node_count = 0;
- _M_key_compare = __x._M_key_compare;
- if (__x._M_root() == 0) {
- _M_root() = 0;
- _M_leftmost() = _M_header;
- _M_rightmost() = _M_header;
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ void
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::_M_erase(_Link_type __x)
+ {
+ // Erase without rebalancing.
+ while (__x != 0)
+ {
+ _M_erase(_S_right(__x));
+ _Link_type __y = _S_left(__x);
+ destroy_node(__x);
+ __x = __y;
+ }
}
- else {
- _M_root() = _M_copy(__x._M_root(), _M_header);
- _M_leftmost() = _S_minimum(_M_root());
- _M_rightmost() = _S_maximum(_M_root());
- _M_node_count = __x._M_node_count;
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ void
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::
+ erase(iterator __first, iterator __last)
+ {
+ if (__first == begin() && __last == end())
+ clear();
+ else
+ while (__first != __last) erase(__first++);
}
- }
- return *this;
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-typename _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::iterator
-_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>
- ::_M_insert(_Base_ptr __x_, _Base_ptr __y_, const _Value& __v)
-{
- _Link_type __x = (_Link_type) __x_;
- _Link_type __y = (_Link_type) __y_;
- _Link_type __z;
-
- if (__y == _M_header || __x != 0 ||
- _M_key_compare(_KeyOfValue()(__v), _S_key(__y))) {
- __z = _M_create_node(__v);
- _S_left(__y) = __z; // also makes _M_leftmost() = __z
- // when __y == _M_header
- if (__y == _M_header) {
- _M_root() = __z;
- _M_rightmost() = __z;
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ void
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::
+ erase(const _Key* __first, const _Key* __last)
+ {
+ while (__first != __last)
+ erase(*__first++);
}
- else if (__y == _M_leftmost())
- _M_leftmost() = __z; // maintain _M_leftmost() pointing to min node
- }
- else {
- __z = _M_create_node(__v);
- _S_right(__y) = __z;
- if (__y == _M_rightmost())
- _M_rightmost() = __z; // maintain _M_rightmost() pointing to max node
- }
- _S_parent(__z) = __y;
- _S_left(__z) = 0;
- _S_right(__z) = 0;
- _Rb_tree_rebalance(__z, _M_header->_M_parent);
- ++_M_node_count;
- return iterator(__z);
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-typename _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::iterator
-_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>
- ::insert_equal(const _Value& __v)
-{
- _Link_type __y = _M_header;
- _Link_type __x = _M_root();
- while (__x != 0) {
- __y = __x;
- __x = _M_key_compare(_KeyOfValue()(__v), _S_key(__x)) ?
- _S_left(__x) : _S_right(__x);
- }
- return _M_insert(__x, __y, __v);
-}
-
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-pair<typename _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::iterator,
- bool>
-_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>
- ::insert_unique(const _Value& __v)
-{
- _Link_type __y = _M_header;
- _Link_type __x = _M_root();
- bool __comp = true;
- while (__x != 0) {
- __y = __x;
- __comp = _M_key_compare(_KeyOfValue()(__v), _S_key(__x));
- __x = __comp ? _S_left(__x) : _S_right(__x);
- }
- iterator __j = iterator(__y);
- if (__comp)
- if (__j == begin())
- return pair<iterator,bool>(_M_insert(__x, __y, __v), true);
- else
- --__j;
- if (_M_key_compare(_S_key(__j._M_node), _KeyOfValue()(__v)))
- return pair<iterator,bool>(_M_insert(__x, __y, __v), true);
- return pair<iterator,bool>(__j, false);
-}
-
-
-template <class _Key, class _Val, class _KeyOfValue,
- class _Compare, class _Alloc>
-typename _Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>::iterator
-_Rb_tree<_Key, _Val, _KeyOfValue, _Compare, _Alloc>
- ::insert_unique(iterator __position, const _Val& __v)
-{
- if (__position._M_node == _M_header->_M_left) { // begin()
- if (size() > 0 &&
- _M_key_compare(_KeyOfValue()(__v), _S_key(__position._M_node)))
- return _M_insert(__position._M_node, __position._M_node, __v);
- // first argument just needs to be non-null
- else
- return insert_unique(__v).first;
- } else if (__position._M_node == _M_header) { // end()
- if (_M_key_compare(_S_key(_M_rightmost()), _KeyOfValue()(__v)))
- return _M_insert(0, _M_rightmost(), __v);
- else
- return insert_unique(__v).first;
- } else {
- iterator __before = __position;
- --__before;
- if (_M_key_compare(_S_key(__before._M_node), _KeyOfValue()(__v))
- && _M_key_compare(_KeyOfValue()(__v), _S_key(__position._M_node))) {
- if (_S_right(__before._M_node) == 0)
- return _M_insert(0, __before._M_node, __v);
- else
- return _M_insert(__position._M_node, __position._M_node, __v);
- // first argument just needs to be non-null
- } else
- return insert_unique(__v).first;
- }
-}
-
-template <class _Key, class _Val, class _KeyOfValue,
- class _Compare, class _Alloc>
-typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::iterator
-_Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>
- ::insert_equal(iterator __position, const _Val& __v)
-{
- if (__position._M_node == _M_header->_M_left) { // begin()
- if (size() > 0 &&
- !_M_key_compare(_S_key(__position._M_node), _KeyOfValue()(__v)))
- return _M_insert(__position._M_node, __position._M_node, __v);
- // first argument just needs to be non-null
- else
- return insert_equal(__v);
- } else if (__position._M_node == _M_header) {// end()
- if (!_M_key_compare(_KeyOfValue()(__v), _S_key(_M_rightmost())))
- return _M_insert(0, _M_rightmost(), __v);
- else
- return insert_equal(__v);
- } else {
- iterator __before = __position;
- --__before;
- if (!_M_key_compare(_KeyOfValue()(__v), _S_key(__before._M_node))
- && !_M_key_compare(_S_key(__position._M_node), _KeyOfValue()(__v))) {
- if (_S_right(__before._M_node) == 0)
- return _M_insert(0, __before._M_node, __v);
- else
- return _M_insert(__position._M_node, __position._M_node, __v);
- // first argument just needs to be non-null
- } else
- return insert_equal(__v);
- }
-}
-
-template <class _Key, class _Val, class _KoV, class _Cmp, class _Alloc>
- template<class _II>
-void _Rb_tree<_Key,_Val,_KoV,_Cmp,_Alloc>
- ::insert_equal(_II __first, _II __last)
-{
- for ( ; __first != __last; ++__first)
- insert_equal(*__first);
-}
-
-template <class _Key, class _Val, class _KoV, class _Cmp, class _Alloc>
- template<class _II>
-void _Rb_tree<_Key,_Val,_KoV,_Cmp,_Alloc>
- ::insert_unique(_II __first, _II __last) {
- for ( ; __first != __last; ++__first)
- insert_unique(*__first);
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-inline void _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>
- ::erase(iterator __position)
-{
- _Link_type __y =
- (_Link_type) _Rb_tree_rebalance_for_erase(__position._M_node,
- _M_header->_M_parent,
- _M_header->_M_left,
- _M_header->_M_right);
- destroy_node(__y);
- --_M_node_count;
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-typename _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::size_type
-_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::erase(const _Key& __x)
-{
- pair<iterator,iterator> __p = equal_range(__x);
- size_type __n = distance(__p.first, __p.second);
- erase(__p.first, __p.second);
- return __n;
-}
-
-template <class _Key, class _Val, class _KoV, class _Compare, class _Alloc>
-typename _Rb_tree<_Key, _Val, _KoV, _Compare, _Alloc>::_Link_type
-_Rb_tree<_Key,_Val,_KoV,_Compare,_Alloc>
- ::_M_copy(_Link_type __x, _Link_type __p)
-{
- // structural copy. __x and __p must be non-null.
- _Link_type __top = _M_clone_node(__x);
- __top->_M_parent = __p;
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::iterator
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::find(const _Key& __k)
+ {
+ _Link_type __y = _M_header; // Last node which is not less than __k.
+ _Link_type __x = _M_root(); // Current node.
+
+ while (__x != 0)
+ if (!_M_key_compare(_S_key(__x), __k))
+ __y = __x, __x = _S_left(__x);
+ else
+ __x = _S_right(__x);
+
+ iterator __j = iterator(__y);
+ return (__j == end() || _M_key_compare(__k, _S_key(__j._M_node))) ?
+ end() : __j;
+ }
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::const_iterator
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::
+ find(const _Key& __k) const
+ {
+ _Link_type __y = _M_header; // Last node which is not less than __k.
+ _Link_type __x = _M_root(); // Current node.
- try {
- if (__x->_M_right)
- __top->_M_right = _M_copy(_S_right(__x), __top);
- __p = __top;
- __x = _S_left(__x);
-
- while (__x != 0) {
- _Link_type __y = _M_clone_node(__x);
- __p->_M_left = __y;
- __y->_M_parent = __p;
- if (__x->_M_right)
- __y->_M_right = _M_copy(_S_right(__x), __y);
- __p = __y;
- __x = _S_left(__x);
+ while (__x != 0)
+ {
+ if (!_M_key_compare(_S_key(__x), __k))
+ __y = __x, __x = _S_left(__x);
+ else
+ __x = _S_right(__x);
+ }
+ const_iterator __j = const_iterator(__y);
+ return (__j == end() || _M_key_compare(__k, _S_key(__j._M_node))) ?
+ end() : __j;
}
- }
- catch(...)
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::size_type
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::
+ count(const _Key& __k) const
{
- _M_erase(__top);
- __throw_exception_again;
+ pair<const_iterator, const_iterator> __p = equal_range(__k);
+ size_type __n = distance(__p.first, __p.second);
+ return __n;
}
- return __top;
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-void _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>
- ::_M_erase(_Link_type __x)
-{
- // erase without rebalancing
- while (__x != 0) {
- _M_erase(_S_right(__x));
- _Link_type __y = _S_left(__x);
- destroy_node(__x);
- __x = __y;
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::iterator
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::
+ lower_bound(const _Key& __k)
+ {
+ _Link_type __y = _M_header; /* Last node which is not less than __k. */
+ _Link_type __x = _M_root(); /* Current node. */
+
+ while (__x != 0)
+ if (!_M_key_compare(_S_key(__x), __k))
+ __y = __x, __x = _S_left(__x);
+ else
+ __x = _S_right(__x);
+
+ return iterator(__y);
+ }
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::const_iterator
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::
+ lower_bound(const _Key& __k) const
+ {
+ _Link_type __y = _M_header; /* Last node which is not less than __k. */
+ _Link_type __x = _M_root(); /* Current node. */
+
+ while (__x != 0)
+ if (!_M_key_compare(_S_key(__x), __k))
+ __y = __x, __x = _S_left(__x);
+ else
+ __x = _S_right(__x);
+
+ return const_iterator(__y);
+ }
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::iterator
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::
+ upper_bound(const _Key& __k)
+ {
+ _Link_type __y = _M_header; /* Last node which is greater than __k. */
+ _Link_type __x = _M_root(); /* Current node. */
+
+ while (__x != 0)
+ if (_M_key_compare(__k, _S_key(__x)))
+ __y = __x, __x = _S_left(__x);
+ else
+ __x = _S_right(__x);
+
+ return iterator(__y);
+ }
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::const_iterator
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::
+ upper_bound(const _Key& __k) const
+ {
+ _Link_type __y = _M_header; /* Last node which is greater than __k. */
+ _Link_type __x = _M_root(); /* Current node. */
+
+ while (__x != 0)
+ if (_M_key_compare(__k, _S_key(__x)))
+ __y = __x, __x = _S_left(__x);
+ else
+ __x = _S_right(__x);
+
+ return const_iterator(__y);
+ }
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ inline
+ pair<typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::iterator,
+ typename _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::iterator>
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::
+ equal_range(const _Key& __k)
+ { return pair<iterator, iterator>(lower_bound(__k), upper_bound(__k)); }
+
+ template<typename _Key, typename _Val, typename _KoV,
+ typename _Compare, typename _Alloc>
+ inline
+ pair<typename _Rb_tree<_Key, _Val, _KoV, _Compare, _Alloc>::const_iterator,
+ typename _Rb_tree<_Key, _Val, _KoV, _Compare, _Alloc>::const_iterator>
+ _Rb_tree<_Key, _Val, _KoV, _Compare, _Alloc>
+ ::equal_range(const _Key& __k) const
+ {
+ return pair<const_iterator,const_iterator>(lower_bound(__k),
+ upper_bound(__k));
}
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-void _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>
- ::erase(iterator __first, iterator __last)
-{
- if (__first == begin() && __last == end())
- clear();
- else
- while (__first != __last) erase(__first++);
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-void _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>
- ::erase(const _Key* __first, const _Key* __last)
-{
- while (__first != __last) erase(*__first++);
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-typename _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::iterator
-_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::find(const _Key& __k)
-{
- _Link_type __y = _M_header; // Last node which is not less than __k.
- _Link_type __x = _M_root(); // Current node.
-
- while (__x != 0)
- if (!_M_key_compare(_S_key(__x), __k))
- __y = __x, __x = _S_left(__x);
- else
- __x = _S_right(__x);
-
- iterator __j = iterator(__y);
- return (__j == end() || _M_key_compare(__k, _S_key(__j._M_node))) ?
- end() : __j;
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-typename _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::const_iterator
-_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::find(const _Key& __k) const
-{
- _Link_type __y = _M_header; /* Last node which is not less than __k. */
- _Link_type __x = _M_root(); /* Current node. */
-
- while (__x != 0) {
- if (!_M_key_compare(_S_key(__x), __k))
- __y = __x, __x = _S_left(__x);
- else
- __x = _S_right(__x);
+
+ inline int
+ __black_count(_Rb_tree_node_base* __node, _Rb_tree_node_base* __root)
+ {
+ if (__node == 0)
+ return 0;
+ int __sum = 0;
+ do
+ {
+ if (__node->_M_color == _M_black)
+ ++__sum;
+ if (__node == __root)
+ break;
+ __node = __node->_M_parent;
+ }
+ while (1);
+ return __sum;
}
- const_iterator __j = const_iterator(__y);
- return (__j == end() || _M_key_compare(__k, _S_key(__j._M_node))) ?
- end() : __j;
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-typename _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::size_type
-_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>
- ::count(const _Key& __k) const
-{
- pair<const_iterator, const_iterator> __p = equal_range(__k);
- size_type __n = distance(__p.first, __p.second);
- return __n;
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-typename _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::iterator
-_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>
- ::lower_bound(const _Key& __k)
-{
- _Link_type __y = _M_header; /* Last node which is not less than __k. */
- _Link_type __x = _M_root(); /* Current node. */
-
- while (__x != 0)
- if (!_M_key_compare(_S_key(__x), __k))
- __y = __x, __x = _S_left(__x);
- else
- __x = _S_right(__x);
-
- return iterator(__y);
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-typename _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::const_iterator
-_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>
- ::lower_bound(const _Key& __k) const
-{
- _Link_type __y = _M_header; /* Last node which is not less than __k. */
- _Link_type __x = _M_root(); /* Current node. */
-
- while (__x != 0)
- if (!_M_key_compare(_S_key(__x), __k))
- __y = __x, __x = _S_left(__x);
- else
- __x = _S_right(__x);
-
- return const_iterator(__y);
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-typename _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::iterator
-_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>
- ::upper_bound(const _Key& __k)
-{
- _Link_type __y = _M_header; /* Last node which is greater than __k. */
- _Link_type __x = _M_root(); /* Current node. */
-
- while (__x != 0)
- if (_M_key_compare(__k, _S_key(__x)))
- __y = __x, __x = _S_left(__x);
- else
- __x = _S_right(__x);
-
- return iterator(__y);
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-typename _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::const_iterator
-_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>
- ::upper_bound(const _Key& __k) const
-{
- _Link_type __y = _M_header; /* Last node which is greater than __k. */
- _Link_type __x = _M_root(); /* Current node. */
-
- while (__x != 0)
- if (_M_key_compare(__k, _S_key(__x)))
- __y = __x, __x = _S_left(__x);
- else
- __x = _S_right(__x);
-
- return const_iterator(__y);
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-inline
-pair<typename _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::iterator,
- typename _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::iterator>
-_Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>
- ::equal_range(const _Key& __k)
-{
- return pair<iterator, iterator>(lower_bound(__k), upper_bound(__k));
-}
-
-template <class _Key, class _Value, class _KoV, class _Compare, class _Alloc>
-inline
-pair<typename _Rb_tree<_Key, _Value, _KoV, _Compare, _Alloc>::const_iterator,
- typename _Rb_tree<_Key, _Value, _KoV, _Compare, _Alloc>::const_iterator>
-_Rb_tree<_Key, _Value, _KoV, _Compare, _Alloc>
- ::equal_range(const _Key& __k) const
-{
- return pair<const_iterator,const_iterator>(lower_bound(__k),
- upper_bound(__k));
-}
-
-inline int
-__black_count(_Rb_tree_node_base* __node, _Rb_tree_node_base* __root)
-{
- if (__node == 0)
- return 0;
- int __sum = 0;
- do {
- if (__node->_M_color == _S_rb_tree_black)
- ++__sum;
- if (__node == __root)
- break;
- __node = __node->_M_parent;
- } while (1);
- return __sum;
-}
-
-template <class _Key, class _Value, class _KeyOfValue,
- class _Compare, class _Alloc>
-bool _Rb_tree<_Key,_Value,_KeyOfValue,_Compare,_Alloc>::__rb_verify() const
-{
- if (_M_node_count == 0 || begin() == end())
- return _M_node_count == 0 && begin() == end() &&
- _M_header->_M_left == _M_header && _M_header->_M_right == _M_header;
+
+ template<typename _Key, typename _Val, typename _KeyOfValue,
+ typename _Compare, typename _Alloc>
+ bool
+ _Rb_tree<_Key,_Val,_KeyOfValue,_Compare,_Alloc>::__rb_verify() const
+ {
+ if (_M_node_count == 0 || begin() == end())
+ return _M_node_count == 0 && begin() == end() &&
+ _M_header->_M_left == _M_header && _M_header->_M_right == _M_header;
- int __len = __black_count(_M_leftmost(), _M_root());
- for (const_iterator __it = begin(); __it != end(); ++__it) {
- _Link_type __x = (_Link_type) __it._M_node;
- _Link_type __L = _S_left(__x);
- _Link_type __R = _S_right(__x);
-
- if (__x->_M_color == _S_rb_tree_red)
- if ((__L && __L->_M_color == _S_rb_tree_red) ||
- (__R && __R->_M_color == _S_rb_tree_red))
- return false;
-
- if (__L && _M_key_compare(_S_key(__x), _S_key(__L)))
- return false;
- if (__R && _M_key_compare(_S_key(__R), _S_key(__x)))
+ int __len = __black_count(_M_leftmost(), _M_root());
+ for (const_iterator __it = begin(); __it != end(); ++__it)
+ {
+ _Link_type __x = (_Link_type) __it._M_node;
+ _Link_type __L = _S_left(__x);
+ _Link_type __R = _S_right(__x);
+
+ if (__x->_M_color == _M_red)
+ if ((__L && __L->_M_color == _M_red)
+ || (__R && __R->_M_color == _M_red))
+ return false;
+
+ if (__L && _M_key_compare(_S_key(__x), _S_key(__L)))
+ return false;
+ if (__R && _M_key_compare(_S_key(__R), _S_key(__x)))
+ return false;
+
+ if (!__L && !__R && __black_count(__x, _M_root()) != __len)
+ return false;
+ }
+
+ if (_M_leftmost() != _Rb_tree_node_base::_S_minimum(_M_root()))
return false;
-
- if (!__L && !__R && __black_count(__x, _M_root()) != __len)
+ if (_M_rightmost() != _Rb_tree_node_base::_S_maximum(_M_root()))
return false;
- }
-
- if (_M_leftmost() != _Rb_tree_node_base::_S_minimum(_M_root()))
- return false;
- if (_M_rightmost() != _Rb_tree_node_base::_S_maximum(_M_root()))
- return false;
-
- return true;
-}
-
+ return true;
+ }
} // namespace std
-#endif /* __GLIBCPP_INTERNAL_TREE_H */
-
-// Local Variables:
-// mode:C++
-// End:
+#endif
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