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// xtree internal header |
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#pragma once |
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#ifndef _XTREE_ |
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#define _XTREE_ |
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#ifndef RC_INVOKED |
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#include <functional> |
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#include <memory> |
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#include <stdexcept> |
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#ifdef _MSC_VER |
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#pragma pack(push,_CRT_PACKING) |
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#pragma warning(push,3) |
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#pragma warning(disable:4127) |
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#endif /* _MSC_VER */ |
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_STD_BEGIN |
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// TEMPLATE CLASS _Tree_nod |
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template<class _Traits> |
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class _Tree_nod |
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: public _Traits // traits form ultimate base |
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{ // base class for _Tree_ptr to hold allocator _Alnod |
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protected: |
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struct _Node; |
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friend struct _Node; |
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typedef _Node *_Nodeptr; // _Node allocator must have ordinary pointers |
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typedef typename _Traits::allocator_type allocator_type; |
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typedef typename _Traits::key_compare key_compare; |
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typedef typename _Traits::value_type value_type; |
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struct _Node |
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{ // tree node |
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_Node(_Nodeptr _Larg, _Nodeptr _Parg, _Nodeptr _Rarg, |
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const value_type& _Val, char _Carg) |
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: _Left(_Larg), _Parent(_Parg), _Right(_Rarg), |
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_Myval(_Val), _Color(_Carg), _Isnil(false) |
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{ // construct a node with value |
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} |
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_Nodeptr _Left; // left subtree, or smallest element if head |
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_Nodeptr _Parent; // parent, or root of tree if head |
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_Nodeptr _Right; // right subtree, or largest element if head |
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value_type _Myval; // the stored value, unused if head |
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char _Color; // _Red or _Black, _Black if head |
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char _Isnil; // true only if head (also nil) node |
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}; |
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_Tree_nod(const key_compare& _Parg, |
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allocator_type _Al) |
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: _Traits(_Parg, _Al), _Alnod(_Al) |
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{ // construct traits from _Parg and allocator from _Al |
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} |
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typename allocator_type::template rebind<_Node>::other |
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_Alnod; // allocator object for nodes |
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}; |
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// TEMPLATE CLASS _Tree_ptr |
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template<class _Traits> |
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class _Tree_ptr |
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: public _Tree_nod<_Traits> |
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{ // base class for _Tree_val to hold allocator _Alptr |
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#if _HAS_ITERATOR_DEBUGGING |
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public: |
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#else /* _HAS_ITERATOR_DEBUGGING */ |
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protected: |
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#endif /* _HAS_ITERATOR_DEBUGGING */ |
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typedef _Tree_nod<_Traits> _Mybase; |
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typedef typename _Mybase::_Node _Node; |
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typedef typename _Mybase::_Nodeptr _Nodeptr; |
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typedef typename _Traits::allocator_type allocator_type; |
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typedef typename _Traits::key_compare key_compare; |
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_Tree_ptr(const key_compare& _Parg, |
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allocator_type _Al) |
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: _Tree_nod<_Traits>(_Parg, _Al), _Alptr(_Al) |
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{ // construct base, and allocator from _Al |
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} |
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typename allocator_type::template rebind<_Nodeptr>::other |
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_Alptr; // allocator object for pointers to nodes |
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}; |
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// TEMPLATE CLASS _Tree_val |
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template<class _Traits> |
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class _Tree_val |
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: public _Tree_ptr<_Traits> |
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{ // base class for _Tree to hold allocator _Alval |
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protected: |
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typedef typename _Traits::allocator_type allocator_type; |
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typedef typename _Traits::key_compare key_compare; |
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_Tree_val(const key_compare& _Parg, |
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allocator_type _Al) |
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: _Tree_ptr<_Traits>(_Parg, _Al), _Alval(_Al) |
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{ // construct base, and allocator from _Al |
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} |
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allocator_type _Alval; // allocator object for values stored in nodes |
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}; |
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// TEMPLATE CLASS _Tree |
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template<class _Traits> |
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class _Tree |
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: public _Tree_val<_Traits> |
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{ // ordered red-black tree for [multi_]{map set} |
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public: |
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typedef _Tree<_Traits> _Myt; |
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typedef _Tree_val<_Traits> _Mybase; |
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typedef typename _Traits::key_type key_type; |
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typedef typename _Traits::key_compare key_compare; |
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typedef typename _Traits::value_compare value_compare; |
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typedef typename _Traits::value_type value_type; |
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typedef typename _Traits::allocator_type allocator_type; |
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#if _HAS_IMMUTABLE_SETS |
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typedef typename _Traits::_ITptr _ITptr; |
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typedef typename _Traits::_IReft _IReft; |
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#else /* _HAS_IMMUTABLE_SETS */ |
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typedef typename allocator_type::pointer _ITptr; |
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typedef typename allocator_type::reference _IReft; |
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#endif /* _HAS_IMMUTABLE_SETS */ |
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protected: |
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typedef typename _Mybase::_Node _Node; |
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typedef typename _Mybase::_Nodeptr _Nodeptr; |
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typedef typename allocator_type::template rebind<_Nodeptr>::other |
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_Nodeptr_alloc; |
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typedef typename _Nodeptr_alloc::reference _Nodepref; |
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typedef typename allocator_type::template rebind<key_type>::other |
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_Key_alloc; |
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typedef typename _Key_alloc::const_reference _Keyref; |
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typedef typename allocator_type::template rebind<char>::other |
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_Char_alloc; |
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typedef typename _Char_alloc::reference _Charref; |
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typedef typename allocator_type::reference _Vref; |
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enum _Redbl |
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{ // colors for link to parent |
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_Red, _Black}; |
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static _Charref _Color(_Nodeptr _Pnode) |
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{ // return reference to color in node |
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return ((_Charref)(*_Pnode)._Color); |
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} |
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static _Charref _Isnil(_Nodeptr _Pnode) |
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{ // return reference to nil flag in node |
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return ((_Charref)(*_Pnode)._Isnil); |
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} |
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static _Keyref _Key(_Nodeptr _Pnode) |
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{ // return reference to key in node |
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return (_Mybase::_Kfn(_Myval(_Pnode))); |
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} |
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static _Nodepref _Left(_Nodeptr _Pnode) |
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{ // return reference to left pointer in node |
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return ((_Nodepref)(*_Pnode)._Left); |
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} |
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static _Nodepref _Parent(_Nodeptr _Pnode) |
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{ // return reference to parent pointer in node |
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return ((_Nodepref)(*_Pnode)._Parent); |
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} |
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static _Nodepref _Right(_Nodeptr _Pnode) |
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{ // return reference to right pointer in node |
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return ((_Nodepref)(*_Pnode)._Right); |
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} |
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static _Vref _Myval(_Nodeptr _Pnode) |
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{ // return reference to value in node |
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return ((_Vref)(*_Pnode)._Myval); |
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} |
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public: |
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typedef typename allocator_type::size_type size_type; |
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typedef typename allocator_type::difference_type _Dift; |
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typedef _Dift difference_type; |
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typedef typename allocator_type::pointer _Tptr; |
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typedef typename allocator_type::const_pointer _Ctptr; |
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typedef typename allocator_type::reference _Reft; |
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typedef _Tptr pointer; |
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typedef _Ctptr const_pointer; |
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typedef _Reft reference; |
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typedef typename allocator_type::const_reference const_reference; |
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// CLASS const_iterator |
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class const_iterator; |
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friend class const_iterator; |
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class const_iterator |
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: public _Bidit<value_type, _Dift, _Ctptr, const_reference> |
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{ // iterator for nonmutable _Tree |
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public: |
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friend class _Tree<_Traits>; |
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typedef bidirectional_iterator_tag iterator_category; |
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typedef _Dift difference_type; |
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typedef _Ctptr pointer; |
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typedef const_reference reference; |
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#if _SECURE_SCL |
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typedef _Range_checked_iterator_tag _Checked_iterator_category; |
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#endif |
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const_iterator() |
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: _Ptr(0) |
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{ // construct with null node pointer |
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} |
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#if _HAS_ITERATOR_DEBUGGING |
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#define _TREE_CONST_ITERATOR(ppnode) const_iterator(ppnode, this) |
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const_iterator(_Nodeptr _Pnode, const _Myt *_Plist=NULL) |
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: _Ptr(_Pnode) |
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{ // construct with node pointer _Pnode |
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this->_Adopt(_Plist); |
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} |
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#elif _SECURE_SCL |
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#define _TREE_CONST_ITERATOR(ppnode) const_iterator(ppnode, this) |
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const_iterator(_Nodeptr _Pnode, const _Myt *_Plist) |
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: _Ptr(_Pnode) |
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{ // construct with node pointer _Pnode |
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_SCL_SECURE_VALIDATE(_Plist != NULL); |
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this->_Set_container(_Plist); |
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} |
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#else |
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#define _TREE_CONST_ITERATOR(ppnode) const_iterator(ppnode) |
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explicit const_iterator(_Nodeptr _Pnode) |
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: _Ptr(_Pnode) |
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{ // construct with node pointer _Pnode |
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} |
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#endif /* _HAS_ITERATOR_DEBUGGING */ |
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const_reference operator*() const |
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{ // return designated value |
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#if _HAS_ITERATOR_DEBUGGING |
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if (this->_Mycont == 0 |
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|| _Ptr == 0 |
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|| _Ptr == ((_Myt *)this->_Mycont)->_Myhead) |
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{ |
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_DEBUG_ERROR("map/set iterator not dereferencable"); |
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_SCL_SECURE_OUT_OF_RANGE; |
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} |
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#else |
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_SCL_SECURE_VALIDATE(this->_Has_container()); |
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_SCL_SECURE_VALIDATE_RANGE(_Ptr != ((_Myt *)(this->_Getmycont()))->_Myhead); |
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#endif /* _HAS_ITERATOR_DEBUGGING */ |
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return (_Myval(_Ptr)); |
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} |
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_Ctptr operator->() const |
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{ // return pointer to class object |
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return (&**this); |
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} |
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const_iterator& operator++() |
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{ // preincrement |
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_Inc(); |
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return (*this); |
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} |
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const_iterator operator++(int) |
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{ // postincrement |
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const_iterator _Tmp = *this; |
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++*this; |
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return (_Tmp); |
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} |
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const_iterator& operator--() |
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{ // predecrement |
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_Dec(); |
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return (*this); |
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} |
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const_iterator operator--(int) |
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{ // postdecrement |
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const_iterator _Tmp = *this; |
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--*this; |
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return (_Tmp); |
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} |
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bool operator==(const const_iterator& _Right) const |
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{ // test for iterator equality |
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#if _HAS_ITERATOR_DEBUGGING |
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if (this->_Mycont == 0 || this->_Mycont != _Right._Mycont) |
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{ |
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_DEBUG_ERROR("map/set iterators incompatible"); |
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_SCL_SECURE_INVALID_ARGUMENT; |
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} |
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#else |
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_SCL_SECURE_VALIDATE(this->_Has_container() && this->_Same_container(_Right)); |
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#endif /* _HAS_ITERATOR_DEBUGGING */ |
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return (_Ptr == _Right._Ptr); |
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} |
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bool operator!=(const const_iterator& _Right) const |
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{ // test for iterator inequality |
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return (!(*this == _Right)); |
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} |
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void _Dec() |
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{ // move to node with next smaller value |
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#if _HAS_ITERATOR_DEBUGGING |
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if (this->_Mycont == 0 |
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|| _Ptr == 0) |
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{ |
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_DEBUG_ERROR("map/set iterator not decrementable"); |
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_SCL_SECURE_INVALID_ARGUMENT; |
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} |
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#else |
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_SCL_SECURE_VALIDATE(this->_Has_container()); |
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#endif /* _HAS_ITERATOR_DEBUGGING */ |
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|
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if (_Isnil(_Ptr)) |
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{ |
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_Ptr = _Right(_Ptr); // end() ==> rightmost |
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if (_Isnil(_Ptr)) |
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#if _HAS_ITERATOR_DEBUGGING |
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{ |
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_DEBUG_ERROR("map/set iterator not decrementable"); |
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_SCL_SECURE_OUT_OF_RANGE; |
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} |
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#elif _SECURE_SCL |
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{ |
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_SCL_SECURE_OUT_OF_RANGE; |
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} |
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#else |
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return; // begin() shouldn't be incremented, don't move |
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#endif |
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} |
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else if (!_Isnil(_Left(_Ptr))) |
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_Ptr = _Max(_Left(_Ptr)); // ==> largest of left subtree |
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else |
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{ // climb looking for left subtree |
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_Nodeptr _Pnode; |
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while (!_Isnil(_Pnode = _Parent(_Ptr)) |
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&& _Ptr == _Left(_Pnode)) |
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_Ptr = _Pnode; // ==> parent while left subtree |
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if (_Isnil(_Ptr)) |
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#if _HAS_ITERATOR_DEBUGGING |
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{ |
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_DEBUG_ERROR("map/set iterator not decrementable"); |
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_SCL_SECURE_OUT_OF_RANGE; |
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} |
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#elif _SECURE_SCL |
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{ |
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_SCL_SECURE_OUT_OF_RANGE; |
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} |
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#else |
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return; // begin() shouldn't be incremented, don't move |
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#endif |
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else |
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_Ptr = _Pnode; // ==> parent if not head |
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} |
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} |
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|
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void _Inc() |
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{ // move to node with next larger value |
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|
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#if _HAS_ITERATOR_DEBUGGING |
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if (this->_Mycont == 0 |
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|| _Ptr == 0 |
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|| _Isnil(_Ptr)) |
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{ |
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_DEBUG_ERROR("map/set iterator not incrementable"); |
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_SCL_SECURE_OUT_OF_RANGE; |
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} |
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#else |
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_SCL_SECURE_VALIDATE(this->_Has_container()); |
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if (_Isnil(_Ptr)) |
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{ |
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_SCL_SECURE_OUT_OF_RANGE; |
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// end() shouldn't be incremented, don't move if _SCL_SECURE is not turned on |
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} |
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#endif /* _HAS_ITERATOR_DEBUGGING */ |
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|
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else if (!_Isnil(_Right(_Ptr))) |
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_Ptr = _Min(_Right(_Ptr)); // ==> smallest of right subtree |
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else |
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{ // climb looking for right subtree |
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_Nodeptr _Pnode; |
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while (!_Isnil(_Pnode = _Parent(_Ptr)) |
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&& _Ptr == _Right(_Pnode)) |
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_Ptr = _Pnode; // ==> parent while right subtree |
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_Ptr = _Pnode; // ==> parent (head if end()) |
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} |
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} |
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|
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_Nodeptr _Mynode() const |
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{ // return node pointer |
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return (_Ptr); |
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} |
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|
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#if _HAS_ITERATOR_DEBUGGING |
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public: |
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#else /* _HAS_ITERATOR_DEBUGGING */ |
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protected: |
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#endif /* _HAS_ITERATOR_DEBUGGING */ |
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_Nodeptr _Ptr; // pointer to node |
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}; |
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|
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// CLASS iterator |
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class iterator; |
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friend class iterator; |
| 424 |
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|
| 425 |
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class iterator |
| 426 |
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: public const_iterator |
| 427 |
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{ // iterator for mutable _Tree |
| 428 |
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public: |
| 429 |
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typedef bidirectional_iterator_tag iterator_category; |
| 430 |
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typedef _Dift difference_type; |
| 431 |
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typedef _ITptr pointer; |
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typedef _IReft reference; |
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|
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iterator() |
| 435 |
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{ // construct with null node pointer |
| 436 |
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} |
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|
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#if _HAS_ITERATOR_DEBUGGING |
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#define _TREE_ITERATOR(ppnode) iterator(ppnode, this) |
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|
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iterator(_Nodeptr _Pnode, const _Myt *_Plist=NULL) |
| 442 |
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: const_iterator(_Pnode, _Plist) |
| 443 |
|
{ // construct with node pointer _Pnode |
| 444 |
|
} |
| 445 |
|
|
| 446 |
|
#elif _SECURE_SCL |
| 447 |
|
#define _TREE_ITERATOR(ppnode) iterator(ppnode, this) |
| 448 |
|
|
| 449 |
|
iterator(_Nodeptr _Pnode, const _Myt *_Plist) |
| 450 |
|
: const_iterator(_Pnode, _Plist) |
| 451 |
|
{ // construct with node pointer _Pnode |
| 452 |
|
} |
| 453 |
|
|
| 454 |
|
#else /* _HAS_ITERATOR_DEBUGGING */ |
| 455 |
|
#define _TREE_ITERATOR(ppnode) iterator(ppnode) |
| 456 |
|
|
| 457 |
|
explicit iterator(_Nodeptr _Pnode) |
| 458 |
|
: const_iterator(_Pnode) |
| 459 |
|
{ // construct with node pointer _Pnode |
| 460 |
|
} |
| 461 |
|
#endif /* _HAS_ITERATOR_DEBUGGING */ |
| 462 |
|
|
| 463 |
|
reference operator*() const |
| 464 |
|
{ // return designated value |
| 465 |
|
return ((reference)**(const_iterator *)this); |
| 466 |
|
} |
| 467 |
|
|
| 468 |
|
pointer operator->() const |
| 469 |
|
{ // return pointer to class object |
| 470 |
|
return (&**this); |
| 471 |
|
} |
| 472 |
|
|
| 473 |
|
iterator& operator++() |
| 474 |
|
{ // preincrement |
| 475 |
|
++(*(const_iterator *)this); |
| 476 |
|
return (*this); |
| 477 |
|
} |
| 478 |
|
|
| 479 |
|
iterator operator++(int) |
| 480 |
|
{ // postincrement |
| 481 |
|
iterator _Tmp = *this; |
| 482 |
|
++*this; |
| 483 |
|
return (_Tmp); |
| 484 |
|
} |
| 485 |
|
|
| 486 |
|
iterator& operator--() |
| 487 |
|
{ // predecrement |
| 488 |
|
--(*(const_iterator *)this); |
| 489 |
|
return (*this); |
| 490 |
|
} |
| 491 |
|
|
| 492 |
|
iterator operator--(int) |
| 493 |
|
{ // postdecrement |
| 494 |
|
iterator _Tmp = *this; |
| 495 |
|
--*this; |
| 496 |
|
return (_Tmp); |
| 497 |
|
} |
| 498 |
|
}; |
| 499 |
|
|
| 500 |
|
typedef std::reverse_iterator<iterator> reverse_iterator; |
| 501 |
|
typedef std::reverse_iterator<const_iterator> const_reverse_iterator; |
| 502 |
|
typedef pair<iterator, bool> _Pairib; |
| 503 |
|
typedef pair<iterator, iterator> _Pairii; |
| 504 |
|
typedef pair<const_iterator, const_iterator> _Paircc; |
| 505 |
|
|
| 506 |
|
explicit _Tree(const key_compare& _Parg, |
| 507 |
|
const allocator_type& _Al) |
| 508 |
|
: _Mybase(_Parg, _Al) |
| 509 |
|
{ // construct empty tree |
| 510 |
|
_Init(); |
| 511 |
|
} |
| 512 |
|
|
| 513 |
|
_Tree(const value_type *_First, const value_type *_Last, |
| 514 |
|
const key_compare& _Parg, const allocator_type& _Al) |
| 515 |
|
: _Mybase(_Parg, _Al) |
| 516 |
|
{ // construct tree from [_First, _Last) array |
| 517 |
|
_Init(); |
| 518 |
|
_TRY_BEGIN |
| 519 |
|
insert(_First, _Last); |
| 520 |
|
_CATCH_ALL |
| 521 |
|
_Tidy(); |
| 522 |
|
_RERAISE; |
| 523 |
|
_CATCH_END |
| 524 |
|
} |
| 525 |
|
|
| 526 |
|
_Tree(const _Myt& _Right) |
| 527 |
|
: _Mybase(_Right.key_comp(), _Right.get_allocator()) |
| 528 |
|
{ // construct tree by copying _Right |
| 529 |
|
_Init(); |
| 530 |
|
_TRY_BEGIN |
| 531 |
|
_Copy(_Right); |
| 532 |
|
_CATCH_ALL |
| 533 |
|
_Tidy(); |
| 534 |
|
_RERAISE; |
| 535 |
|
_CATCH_END |
| 536 |
|
} |
| 537 |
|
|
| 538 |
|
~_Tree() |
| 539 |
|
{ // destroy tree |
| 540 |
|
_Tidy(); |
| 541 |
|
} |
| 542 |
|
|
| 543 |
|
_Myt& operator=(const _Myt& _Right) |
| 544 |
|
{ // replace contents from _Right |
| 545 |
|
if (this != &_Right) |
| 546 |
|
{ // worth doing |
| 547 |
|
erase(begin(), end()); |
| 548 |
|
this->comp = _Right.comp; |
| 549 |
|
_Copy(_Right); |
| 550 |
|
} |
| 551 |
|
return (*this); |
| 552 |
|
} |
| 553 |
|
|
| 554 |
|
iterator begin() |
| 555 |
|
{ // return iterator for beginning of mutable sequence |
| 556 |
|
return (_TREE_ITERATOR(_Lmost())); |
| 557 |
|
} |
| 558 |
|
|
| 559 |
|
const_iterator begin() const |
| 560 |
|
{ // return iterator for beginning of nonmutable sequence |
| 561 |
|
return (_TREE_CONST_ITERATOR(_Lmost())); |
| 562 |
|
} |
| 563 |
|
|
| 564 |
|
iterator end() |
| 565 |
|
{ // return iterator for end of mutable sequence |
| 566 |
|
return (_TREE_ITERATOR(_Myhead)); |
| 567 |
|
} |
| 568 |
|
|
| 569 |
|
const_iterator end() const |
| 570 |
|
{ // return iterator for end of nonmutable sequence |
| 571 |
|
return (_TREE_CONST_ITERATOR(_Myhead)); |
| 572 |
|
} |
| 573 |
|
|
| 574 |
|
iterator _Make_iter(const_iterator _Where) const |
| 575 |
|
{ // make iterator from const_iterator |
| 576 |
|
return (iterator(_TREE_ITERATOR(_Where._Ptr))); |
| 577 |
|
} |
| 578 |
|
|
| 579 |
|
reverse_iterator rbegin() |
| 580 |
|
{ // return iterator for beginning of reversed mutable sequence |
| 581 |
|
return (reverse_iterator(end())); |
| 582 |
|
} |
| 583 |
|
|
| 584 |
|
const_reverse_iterator rbegin() const |
| 585 |
|
{ // return iterator for beginning of reversed nonmutable sequence |
| 586 |
|
return (const_reverse_iterator(end())); |
| 587 |
|
} |
| 588 |
|
|
| 589 |
|
reverse_iterator rend() |
| 590 |
|
{ // return iterator for end of reversed mutable sequence |
| 591 |
|
return (reverse_iterator(begin())); |
| 592 |
|
} |
| 593 |
|
|
| 594 |
|
const_reverse_iterator rend() const |
| 595 |
|
{ // return iterator for end of reversed nonmutable sequence |
| 596 |
|
return (const_reverse_iterator(begin())); |
| 597 |
|
} |
| 598 |
|
|
| 599 |
|
size_type size() const |
| 600 |
|
{ // return length of sequence |
| 601 |
|
return (_Mysize); |
| 602 |
|
} |
| 603 |
|
|
| 604 |
|
size_type max_size() const |
| 605 |
|
{ // return maximum possible length of sequence |
| 606 |
|
return (this->_Alval.max_size()); |
| 607 |
|
} |
| 608 |
|
|
| 609 |
|
bool empty() const |
| 610 |
|
{ // return true only if sequence is empty |
| 611 |
|
return (size() == 0); |
| 612 |
|
} |
| 613 |
|
|
| 614 |
|
allocator_type get_allocator() const |
| 615 |
|
{ // return allocator object for values |
| 616 |
|
return (this->_Alval); |
| 617 |
|
} |
| 618 |
|
|
| 619 |
|
key_compare key_comp() const |
| 620 |
|
{ // return object for comparing keys |
| 621 |
|
return (this->comp); |
| 622 |
|
} |
| 623 |
|
|
| 624 |
|
value_compare value_comp() const |
| 625 |
|
{ // return object for comparing values |
| 626 |
|
return (value_compare(key_comp())); |
| 627 |
|
} |
| 628 |
|
|
| 629 |
|
_Pairib insert(const value_type& _Val) |
| 630 |
|
{ // try to insert node with value _Val |
| 631 |
|
_Nodeptr _Trynode = _Root(); |
| 632 |
|
_Nodeptr _Wherenode = _Myhead; |
| 633 |
|
bool _Addleft = true; // add to left of head if tree empty |
| 634 |
|
while (!_Isnil(_Trynode)) |
| 635 |
|
{ // look for leaf to insert before (_Addleft) or after |
| 636 |
|
_Wherenode = _Trynode; |
| 637 |
|
_Addleft = _DEBUG_LT_PRED(this->comp, |
| 638 |
|
this->_Kfn(_Val), _Key(_Trynode)); |
| 639 |
|
_Trynode = _Addleft ? _Left(_Trynode) : _Right(_Trynode); |
| 640 |
|
} |
| 641 |
|
|
| 642 |
|
if (this->_Multi) |
| 643 |
|
return (_Pairib(_Insert(_Addleft, _Wherenode, _Val), true)); |
| 644 |
|
else |
| 645 |
|
{ // insert only if unique |
| 646 |
|
iterator _Where = _TREE_ITERATOR(_Wherenode); |
| 647 |
|
if (!_Addleft) |
| 648 |
|
; // need to test if insert after is okay |
| 649 |
|
else if (_Where == begin()) |
| 650 |
|
return (_Pairib(_Insert(true, _Wherenode, _Val), true)); |
| 651 |
|
else |
| 652 |
|
--_Where; // need to test if insert before is okay |
| 653 |
|
|
| 654 |
|
if (_DEBUG_LT_PRED(this->comp, |
| 655 |
|
_Key(_Where._Mynode()), this->_Kfn(_Val))) |
| 656 |
|
return (_Pairib(_Insert(_Addleft, _Wherenode, _Val), true)); |
| 657 |
|
else |
| 658 |
|
return (_Pairib(_Where, false)); |
| 659 |
|
} |
| 660 |
|
} |
| 661 |
|
|
| 662 |
|
iterator insert(const_iterator _Where, |
| 663 |
|
const value_type& _Val) |
| 664 |
|
{ // try to insert node with value _Val using _Where as a hint |
| 665 |
|
|
| 666 |
|
#if _HAS_ITERATOR_DEBUGGING |
| 667 |
|
if (_Where._Mycont != this) |
| 668 |
|
_DEBUG_ERROR("map/set insert iterator outside range"); |
| 669 |
|
#endif /* _HAS_ITERATOR_DEBUGGING */ |
| 670 |
|
|
| 671 |
|
const_iterator _Next; |
| 672 |
|
|
| 673 |
|
if (size() == 0) |
| 674 |
|
return (_Insert(true, _Myhead, _Val)); // insert into empty tree |
| 675 |
|
else if (this->_Multi) |
| 676 |
|
{ // insert even if duplicate |
| 677 |
|
if (_Where == begin()) |
| 678 |
|
{ // insert at beginning if before first element |
| 679 |
|
if (!_DEBUG_LT_PRED(this->comp, |
| 680 |
|
_Key(_Where._Mynode()), this->_Kfn(_Val))) |
| 681 |
|
return (_Insert(true, _Where._Mynode(), _Val)); |
| 682 |
|
} |
| 683 |
|
else if (_Where == end()) |
| 684 |
|
{ // insert at end if after last element |
| 685 |
|
if (!_DEBUG_LT_PRED(this->comp, |
| 686 |
|
this->_Kfn(_Val), _Key(_Rmost()))) |
| 687 |
|
return (_Insert(false, _Rmost(), _Val)); |
| 688 |
|
} |
| 689 |
|
else if (!_DEBUG_LT_PRED(this->comp, |
| 690 |
|
_Key(_Where._Mynode()), this->_Kfn(_Val)) |
| 691 |
|
&& !_DEBUG_LT_PRED(this->comp, |
| 692 |
|
this->_Kfn(_Val), _Key((--(_Next = _Where))._Mynode()))) |
| 693 |
|
{ // insert before _Where |
| 694 |
|
if (_Isnil(_Right(_Next._Mynode()))) |
| 695 |
|
return (_Insert(false, _Next._Mynode(), _Val)); |
| 696 |
|
else |
| 697 |
|
return (_Insert(true, _Where._Mynode(), _Val)); |
| 698 |
|
} |
| 699 |
|
else if (!_DEBUG_LT_PRED(this->comp, |
| 700 |
|
this->_Kfn(_Val), _Key(_Where._Mynode())) |
| 701 |
|
&& (++(_Next = _Where) == end() |
| 702 |
|
|| !_DEBUG_LT_PRED(this->comp, |
| 703 |
|
_Key(_Next._Mynode()), this->_Kfn(_Val)))) |
| 704 |
|
{ // insert after _Where |
| 705 |
|
if (_Isnil(_Right(_Where._Mynode()))) |
| 706 |
|
return (_Insert(false, _Where._Mynode(), _Val)); |
| 707 |
|
else |
| 708 |
|
return (_Insert(true, _Next._Mynode(), _Val)); |
| 709 |
|
} |
| 710 |
|
} |
| 711 |
|
else |
| 712 |
|
{ // insert only if unique |
| 713 |
|
if (_Where == begin()) |
| 714 |
|
{ // insert at beginning if before first element |
| 715 |
|
if (_DEBUG_LT_PRED(this->comp, |
| 716 |
|
this->_Kfn(_Val), _Key(_Where._Mynode()))) |
| 717 |
|
return (_Insert(true, _Where._Mynode(), _Val)); |
| 718 |
|
} |
| 719 |
|
else if (_Where == end()) |
| 720 |
|
{ // insert at end if after last element |
| 721 |
|
if (_DEBUG_LT_PRED(this->comp, |
| 722 |
|
_Key(_Rmost()), this->_Kfn(_Val))) |
| 723 |
|
return (_Insert(false, _Rmost(), _Val)); |
| 724 |
|
} |
| 725 |
|
else if (_DEBUG_LT_PRED(this->comp, |
| 726 |
|
this->_Kfn(_Val), _Key(_Where._Mynode())) |
| 727 |
|
&& _DEBUG_LT_PRED(this->comp, |
| 728 |
|
_Key((--(_Next = _Where))._Mynode()), this->_Kfn(_Val))) |
| 729 |
|
{ // insert before _Where |
| 730 |
|
if (_Isnil(_Right(_Next._Mynode()))) |
| 731 |
|
return (_Insert(false, _Next._Mynode(), _Val)); |
| 732 |
|
else |
| 733 |
|
return (_Insert(true, _Where._Mynode(), _Val)); |
| 734 |
|
} |
| 735 |
|
else if (_DEBUG_LT_PRED(this->comp, |
| 736 |
|
_Key(_Where._Mynode()), this->_Kfn(_Val)) |
| 737 |
|
&& (++(_Next = _Where) == end() |
| 738 |
|
|| _DEBUG_LT_PRED(this->comp, |
| 739 |
|
this->_Kfn(_Val), _Key(_Next._Mynode())))) |
| 740 |
|
{ // insert after _Where |
| 741 |
|
if (_Isnil(_Right(_Where._Mynode()))) |
| 742 |
|
return (_Insert(false, _Where._Mynode(), _Val)); |
| 743 |
|
else |
| 744 |
|
return (_Insert(true, _Next._Mynode(), _Val)); |
| 745 |
|
} |
| 746 |
|
} |
| 747 |
|
|
| 748 |
|
return (insert(_Val).first); // try usual insert if all else fails |
| 749 |
|
} |
| 750 |
|
|
| 751 |
|
template<class _Iter> |
| 752 |
|
void insert(_Iter _First, _Iter _Last) |
| 753 |
|
{ // insert [_First, _Last) one at a time |
| 754 |
|
|
| 755 |
|
#if _HAS_ITERATOR_DEBUGGING |
| 756 |
|
_DEBUG_RANGE(_First, _Last); |
| 757 |
|
#endif /* _HAS_ITERATOR_DEBUGGING */ |
| 758 |
|
|
| 759 |
|
for (; _First != _Last; ++_First) |
| 760 |
|
insert(*_First); |
| 761 |
|
} |
| 762 |
|
|
| 763 |
|
iterator erase(const_iterator _Where) |
| 764 |
|
{ // erase element at _Where |
| 765 |
|
|
| 766 |
|
#if _HAS_ITERATOR_DEBUGGING |
| 767 |
|
if (_Where._Mycont != this || _Isnil(_Where._Mynode())) |
| 768 |
|
_DEBUG_ERROR("map/set erase iterator outside range"); |
| 769 |
|
_Nodeptr _Erasednode = _Where._Mynode(); // node to erase |
| 770 |
|
++_Where; // save successor iterator for return |
| 771 |
|
_Orphan_ptr(*this, _Erasednode); |
| 772 |
|
|
| 773 |
|
#else /* _HAS_ITERATOR_DEBUGGING */ |
| 774 |
|
if (_Isnil(_Where._Mynode())) |
| 775 |
|
_THROW(out_of_range, "invalid map/set<T> iterator"); |
| 776 |
|
_Nodeptr _Erasednode = _Where._Mynode(); // node to erase |
| 777 |
|
++_Where; // save successor iterator for return |
| 778 |
|
#endif /* _HAS_ITERATOR_DEBUGGING */ |
| 779 |
|
|
| 780 |
|
_Nodeptr _Fixnode; // the node to recolor as needed |
| 781 |
|
_Nodeptr _Fixnodeparent; // parent of _Fixnode (which may be nil) |
| 782 |
|
_Nodeptr _Pnode = _Erasednode; |
| 783 |
|
|
| 784 |
|
if (_Isnil(_Left(_Pnode))) |
| 785 |
|
_Fixnode = _Right(_Pnode); // must stitch up right subtree |
| 786 |
|
else if (_Isnil(_Right(_Pnode))) |
| 787 |
|
_Fixnode = _Left(_Pnode); // must stitch up left subtree |
| 788 |
|
else |
| 789 |
|
{ // two subtrees, must lift successor node to replace erased |
| 790 |
|
_Pnode = _Where._Mynode(); // _Pnode is successor node |
| 791 |
|
_Fixnode = _Right(_Pnode); // _Fixnode is its only subtree |
| 792 |
|
} |
| 793 |
|
|
| 794 |
|
if (_Pnode == _Erasednode) |
| 795 |
|
{ // at most one subtree, relink it |
| 796 |
|
_Fixnodeparent = _Parent(_Erasednode); |
| 797 |
|
if (!_Isnil(_Fixnode)) |
| 798 |
|
_Parent(_Fixnode) = _Fixnodeparent; // link up |
| 799 |
|
|
| 800 |
|
if (_Root() == _Erasednode) |
| 801 |
|
_Root() = _Fixnode; // link down from root |
| 802 |
|
else if (_Left(_Fixnodeparent) == _Erasednode) |
| 803 |
|
_Left(_Fixnodeparent) = _Fixnode; // link down to left |
| 804 |
|
else |
| 805 |
|
_Right(_Fixnodeparent) = _Fixnode; // link down to right |
| 806 |
|
|
| 807 |
|
if (_Lmost() == _Erasednode) |
| 808 |
|
_Lmost() = _Isnil(_Fixnode) |
| 809 |
|
? _Fixnodeparent // smallest is parent of erased node |
| 810 |
|
: _Min(_Fixnode); // smallest in relinked subtree |
| 811 |
|
|
| 812 |
|
if (_Rmost() == _Erasednode) |
| 813 |
|
_Rmost() = _Isnil(_Fixnode) |
| 814 |
|
? _Fixnodeparent // largest is parent of erased node |
| 815 |
|
: _Max(_Fixnode); // largest in relinked subtree |
| 816 |
|
} |
| 817 |
|
else |
| 818 |
|
{ // erased has two subtrees, _Pnode is successor to erased |
| 819 |
|
_Parent(_Left(_Erasednode)) = _Pnode; // link left up |
| 820 |
|
_Left(_Pnode) = _Left(_Erasednode); // link successor down |
| 821 |
|
|
| 822 |
|
if (_Pnode == _Right(_Erasednode)) |
| 823 |
|
_Fixnodeparent = _Pnode; // successor is next to erased |
| 824 |
|
else |
| 825 |
|
{ // successor further down, link in place of erased |
| 826 |
|
_Fixnodeparent = _Parent(_Pnode); // parent is successor's |
| 827 |
|
if (!_Isnil(_Fixnode)) |
| 828 |
|
_Parent(_Fixnode) = _Fixnodeparent; // link fix up |
| 829 |
|
_Left(_Fixnodeparent) = _Fixnode; // link fix down |
| 830 |
|
_Right(_Pnode) = _Right(_Erasednode); // link successor down |
| 831 |
|
_Parent(_Right(_Erasednode)) = _Pnode; // link right up |
| 832 |
|
} |
| 833 |
|
|
| 834 |
|
if (_Root() == _Erasednode) |
| 835 |
|
_Root() = _Pnode; // link down from root |
| 836 |
|
else if (_Left(_Parent(_Erasednode)) == _Erasednode) |
| 837 |
|
_Left(_Parent(_Erasednode)) = _Pnode; // link down to left |
| 838 |
|
else |
| 839 |
|
_Right(_Parent(_Erasednode)) = _Pnode; // link down to right |
| 840 |
|
|
| 841 |
|
_Parent(_Pnode) = _Parent(_Erasednode); // link successor up |
| 842 |
|
_STD swap(_Color(_Pnode), _Color(_Erasednode)); // recolor it |
| 843 |
|
} |
| 844 |
|
|
| 845 |
|
if (_Color(_Erasednode) == _Black) |
| 846 |
|
{ // erasing black link, must recolor/rebalance tree |
| 847 |
|
for (; _Fixnode != _Root() && _Color(_Fixnode) == _Black; |
| 848 |
|
_Fixnodeparent = _Parent(_Fixnode)) |
| 849 |
|
if (_Fixnode == _Left(_Fixnodeparent)) |
| 850 |
|
{ // fixup left subtree |
| 851 |
|
_Pnode = _Right(_Fixnodeparent); |
| 852 |
|
if (_Color(_Pnode) == _Red) |
| 853 |
|
{ // rotate red up from right subtree |
| 854 |
|
_Color(_Pnode) = _Black; |
| 855 |
|
_Color(_Fixnodeparent) = _Red; |
| 856 |
|
_Lrotate(_Fixnodeparent); |
| 857 |
|
_Pnode = _Right(_Fixnodeparent); |
| 858 |
|
} |
| 859 |
|
|
| 860 |
|
if (_Isnil(_Pnode)) |
| 861 |
|
_Fixnode = _Fixnodeparent; // shouldn't happen |
| 862 |
|
else if (_Color(_Left(_Pnode)) == _Black |
| 863 |
|
&& _Color(_Right(_Pnode)) == _Black) |
| 864 |
|
{ // redden right subtree with black children |
| 865 |
|
_Color(_Pnode) = _Red; |
| 866 |
|
_Fixnode = _Fixnodeparent; |
| 867 |
|
} |
| 868 |
|
else |
| 869 |
|
{ // must rearrange right subtree |
| 870 |
|
if (_Color(_Right(_Pnode)) == _Black) |
| 871 |
|
{ // rotate red up from left sub-subtree |
| 872 |
|
_Color(_Left(_Pnode)) = _Black; |
| 873 |
|
_Color(_Pnode) = _Red; |
| 874 |
|
_Rrotate(_Pnode); |
| 875 |
|
_Pnode = _Right(_Fixnodeparent); |
| 876 |
|
} |
| 877 |
|
|
| 878 |
|
_Color(_Pnode) = _Color(_Fixnodeparent); |
| 879 |
|
_Color(_Fixnodeparent) = _Black; |
| 880 |
|
_Color(_Right(_Pnode)) = _Black; |
| 881 |
|
_Lrotate(_Fixnodeparent); |
| 882 |
|
break; // tree now recolored/rebalanced |
| 883 |
|
} |
| 884 |
|
} |
| 885 |
|
else |
| 886 |
|
{ // fixup right subtree |
| 887 |
|
_Pnode = _Left(_Fixnodeparent); |
| 888 |
|
if (_Color(_Pnode) == _Red) |
| 889 |
|
{ // rotate red up from left subtree |
| 890 |
|
_Color(_Pnode) = _Black; |
| 891 |
|
_Color(_Fixnodeparent) = _Red; |
| 892 |
|
_Rrotate(_Fixnodeparent); |
| 893 |
|
_Pnode = _Left(_Fixnodeparent); |
| 894 |
|
} |
| 895 |
|
if (_Isnil(_Pnode)) |
| 896 |
|
_Fixnode = _Fixnodeparent; // shouldn't happen |
| 897 |
|
else if (_Color(_Right(_Pnode)) == _Black |
| 898 |
|
&& _Color(_Left(_Pnode)) == _Black) |
| 899 |
|
{ // redden left subtree with black children |
| 900 |
|
_Color(_Pnode) = _Red; |
| 901 |
|
_Fixnode = _Fixnodeparent; |
| 902 |
|
} |
| 903 |
|
else |
| 904 |
|
{ // must rearrange left subtree |
| 905 |
|
if (_Color(_Left(_Pnode)) == _Black) |
| 906 |
|
{ // rotate red up from right sub-subtree |
| 907 |
|
_Color(_Right(_Pnode)) = _Black; |
| 908 |
|
_Color(_Pnode) = _Red; |
| 909 |
|
_Lrotate(_Pnode); |
| 910 |
|
_Pnode = _Left(_Fixnodeparent); |
| 911 |
|
} |
| 912 |
|
|
| 913 |
|
_Color(_Pnode) = _Color(_Fixnodeparent); |
| 914 |
|
_Color(_Fixnodeparent) = _Black; |
| 915 |
|
_Color(_Left(_Pnode)) = _Black; |
| 916 |
|
_Rrotate(_Fixnodeparent); |
| 917 |
|
break; // tree now recolored/rebalanced |
| 918 |
|
} |
| 919 |
|
} |
| 920 |
|
|
| 921 |
|
_Color(_Fixnode) = _Black; // ensure stopping node is black |
| 922 |
|
} |
| 923 |
|
|
| 924 |
|
this->_Alnod.destroy(_Erasednode); // destroy, free erased node |
| 925 |
|
this->_Alnod.deallocate(_Erasednode, 1); |
| 926 |
|
|
| 927 |
|
if (0 < _Mysize) |
| 928 |
|
--_Mysize; |
| 929 |
|
|
| 930 |
|
return (_Make_iter(_Where)); // return successor iterator |
| 931 |
|
} |
| 932 |
|
|
| 933 |
|
iterator erase(const_iterator _First, const_iterator _Last) |
| 934 |
|
{ // erase [_First, _Last) |
| 935 |
|
if (_First == begin() && _Last == end()) |
| 936 |
|
{ // erase all |
| 937 |
|
clear(); |
| 938 |
|
return (begin()); |
| 939 |
|
} |
| 940 |
|
else |
| 941 |
|
{ // partial erase, one at a time |
| 942 |
|
while (_First != _Last) |
| 943 |
|
erase(_First++); |
| 944 |
|
return (_Make_iter(_First)); |
| 945 |
|
} |
| 946 |
|
} |
| 947 |
|
|
| 948 |
|
size_type erase(const key_type& _Keyval) |
| 949 |
|
{ // erase and count all that match _Keyval |
| 950 |
|
_Pairii _Where = equal_range(_Keyval); |
| 951 |
|
size_type _Num = 0; |
| 952 |
|
_Distance(_Where.first, _Where.second, _Num); |
| 953 |
|
erase(_Where.first, _Where.second); |
| 954 |
|
return (_Num); |
| 955 |
|
} |
| 956 |
|
|
| 957 |
|
void erase(const key_type *_First, const key_type *_Last) |
| 958 |
|
{ // erase all that match array of keys [_First, _Last) |
| 959 |
|
_DEBUG_RANGE(_First, _Last); |
| 960 |
|
while (_First != _Last) |
| 961 |
|
erase(*_First++); |
| 962 |
|
} |
| 963 |
|
|
| 964 |
|
void clear() |
| 965 |
|
{ // erase all |
| 966 |
|
|
| 967 |
|
#if _HAS_ITERATOR_DEBUGGING |
| 968 |
|
this->_Orphan_ptr(*this, 0); |
| 969 |
|
#endif /* _HAS_ITERATOR_DEBUGGING */ |
| 970 |
|
|
| 971 |
|
_Erase(_Root()); |
| 972 |
|
_Root() = _Myhead, _Mysize = 0; |
| 973 |
|
_Lmost() = _Myhead, _Rmost() = _Myhead; |
| 974 |
|
} |
| 975 |
|
|
| 976 |
|
iterator find(const key_type& _Keyval) |
| 977 |
|
{ // find an element in mutable sequence that matches _Keyval |
| 978 |
|
iterator _Where = lower_bound(_Keyval); |
| 979 |
|
return (_Where == end() |
| 980 |
|
|| _DEBUG_LT_PRED(this->comp, |
| 981 |
|
_Keyval, _Key(_Where._Mynode())) |
| 982 |
|
? end() : _Where); |
| 983 |
|
} |
| 984 |
|
|
| 985 |
|
const_iterator find(const key_type& _Keyval) const |
| 986 |
|
{ // find an element in nonmutable sequence that matches _Keyval |
| 987 |
|
const_iterator _Where = lower_bound(_Keyval); |
| 988 |
|
return (_Where == end() |
| 989 |
|
|| _DEBUG_LT_PRED(this->comp, |
| 990 |
|
_Keyval, _Key(_Where._Mynode())) |
| 991 |
|
? end() : _Where); |
| 992 |
|
} |
| 993 |
|
|
| 994 |
|
size_type count(const key_type& _Keyval) const |
| 995 |
|
{ // count all elements that match _Keyval |
| 996 |
|
_Paircc _Ans = equal_range(_Keyval); |
| 997 |
|
size_type _Num = 0; |
| 998 |
|
_Distance(_Ans.first, _Ans.second, _Num); |
| 999 |
|
return (_Num); |
| 1000 |
|
} |
| 1001 |
|
|
| 1002 |
|
iterator lower_bound(const key_type& _Keyval) |
| 1003 |
|
{ // find leftmost node not less than _Keyval in mutable tree |
| 1004 |
|
return (_TREE_ITERATOR(_Lbound(_Keyval))); |
| 1005 |
|
} |
| 1006 |
|
|
| 1007 |
|
const_iterator lower_bound(const key_type& _Keyval) const |
| 1008 |
|
{ // find leftmost node not less than _Keyval in nonmutable tree |
| 1009 |
|
return (_TREE_CONST_ITERATOR(_Lbound(_Keyval))); |
| 1010 |
|
} |
| 1011 |
|
|
| 1012 |
|
iterator upper_bound(const key_type& _Keyval) |
| 1013 |
|
{ // find leftmost node greater than _Keyval in mutable tree |
| 1014 |
|
return (_TREE_ITERATOR(_Ubound(_Keyval))); |
| 1015 |
|
} |
| 1016 |
|
|
| 1017 |
|
const_iterator upper_bound(const key_type& _Keyval) const |
| 1018 |
|
{ // find leftmost node greater than _Keyval in nonmutable tree |
| 1019 |
|
return (_TREE_CONST_ITERATOR(_Ubound(_Keyval))); |
| 1020 |
|
} |
| 1021 |
|
|
| 1022 |
|
_Pairii equal_range(const key_type& _Keyval) |
| 1023 |
|
{ // find range equivalent to _Keyval in mutable tree |
| 1024 |
|
return (_Eqrange(_Keyval)); |
| 1025 |
|
} |
| 1026 |
|
|
| 1027 |
|
_Paircc equal_range(const key_type& _Keyval) const |
| 1028 |
|
{ // find range equivalent to _Keyval in nonmutable tree |
| 1029 |
|
return (_Eqrange(_Keyval)); |
| 1030 |
|
} |
| 1031 |
|
|
| 1032 |
|
void swap(_Myt& _Right) |
| 1033 |
|
{ // exchange contents with _Right |
| 1034 |
|
if (this == &_Right) |
| 1035 |
|
; // same object, do nothing |
| 1036 |
|
else if (get_allocator() == _Right.get_allocator()) |
| 1037 |
|
{ // same allocator, swap control information |
| 1038 |
|
|
| 1039 |
|
#if _HAS_ITERATOR_DEBUGGING |
| 1040 |
|
this->_Swap_all(_Right); |
| 1041 |
|
#endif /* _HAS_ITERATOR_DEBUGGING */ |
| 1042 |
|
|
| 1043 |
|
this->_Swap_aux(_Right); |
| 1044 |
|
|
| 1045 |
|
_STD _Swap_adl(this->comp, _Right.comp); |
| 1046 |
|
_STD swap(_Myhead, _Right._Myhead); |
| 1047 |
|
_STD swap(_Mysize, _Right._Mysize); |
| 1048 |
|
} |
| 1049 |
|
else |
| 1050 |
|
{ // different allocator, do multiple assigns |
| 1051 |
|
this->_Swap_aux(_Right); |
| 1052 |
|
|
| 1053 |
|
_Myt _Tmp = *this; |
| 1054 |
|
|
| 1055 |
|
*this = _Right; |
| 1056 |
|
_Right = _Tmp; |
| 1057 |
|
} |
| 1058 |
|
} |
| 1059 |
|
|
| 1060 |
|
protected: |
| 1061 |
|
void _Copy(const _Myt& _Right) |
| 1062 |
|
{ // copy entire tree from _Right |
| 1063 |
|
_Root() = _Copy(_Right._Root(), _Myhead); |
| 1064 |
|
_Mysize = _Right.size(); |
| 1065 |
|
if (!_Isnil(_Root())) |
| 1066 |
|
{ // nonempty tree, look for new smallest and largest |
| 1067 |
|
_Lmost() = _Min(_Root()); |
| 1068 |
|
_Rmost() = _Max(_Root()); |
| 1069 |
|
} |
| 1070 |
|
else |
| 1071 |
|
_Lmost() = _Myhead, _Rmost() = _Myhead; // empty tree |
| 1072 |
|
} |
| 1073 |
|
|
| 1074 |
|
_Nodeptr _Copy(_Nodeptr _Rootnode, _Nodeptr _Wherenode) |
| 1075 |
|
{ // copy entire subtree, recursively |
| 1076 |
|
_Nodeptr _Newroot = _Myhead; // point at nil node |
| 1077 |
|
|
| 1078 |
|
if (!_Isnil(_Rootnode)) |
| 1079 |
|
{ // copy a node, then any subtrees |
| 1080 |
|
_Nodeptr _Pnode = _Buynode(_Myhead, _Wherenode, _Myhead, |
| 1081 |
|
_Myval(_Rootnode), _Color(_Rootnode)); |
| 1082 |
|
if (_Isnil(_Newroot)) |
| 1083 |
|
_Newroot = _Pnode; // memorize new root |
| 1084 |
|
|
| 1085 |
|
_TRY_BEGIN |
| 1086 |
|
_Left(_Pnode) = _Copy(_Left(_Rootnode), _Pnode); |
| 1087 |
|
_Right(_Pnode) = _Copy(_Right(_Rootnode), _Pnode); |
| 1088 |
|
_CATCH_ALL |
| 1089 |
|
_Erase(_Newroot); // subtree copy failed, bail out |