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This is the verbatim text of the qmap.h include file. It is provided only for illustration; the copyright remains with Trolltech.
/****************************************************************************
** $Id: qt/qmap.h 3.3.8 edited Jan 11 14:38 $
**
** Definition of TQMap class
**
** Created : 990406
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the tools module of the TQt GUI Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Alternatively you may (at your option) use any
** later version of the GNU General Public License if such license has
** been publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
** included in the packaging of this file. Licensees holding valid TQt
** Commercial licenses may use this file in accordance with the TQt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#ifndef TQMAP_H
#define TQMAP_H
#ifndef QT_H
#include "qglobal.h"
#include "qshared.h"
#include "qdatastream.h"
#include "qpair.h"
#include "qvaluelist.h"
#endif // QT_H
#ifndef QT_NO_STL
#include <iterator>
#include <map>
#endif
//#define QT_CHECK_MAP_RANGE
struct Q_EXPORT TQMapNodeBase
{
enum Color { Red, Black };
TQMapNodeBase* left;
TQMapNodeBase* right;
TQMapNodeBase* parent;
Color color;
TQMapNodeBase* minimum() {
TQMapNodeBase* x = this;
while ( x->left )
x = x->left;
return x;
}
TQMapNodeBase* maximum() {
TQMapNodeBase* x = this;
while ( x->right )
x = x->right;
return x;
}
};
template <class K, class T>
struct TQMapNode : public TQMapNodeBase
{
TQMapNode( const K& _key, const T& _data ) { data = _data; key = _key; }
TQMapNode( const K& _key ) { key = _key; }
TQMapNode( const TQMapNode<K,T>& _n ) { key = _n.key; data = _n.data; }
TQMapNode() { }
T data;
K key;
};
template<class K, class T>
class TQMapIterator
{
public:
/**
* Typedefs
*/
typedef TQMapNode< K, T >* NodePtr;
#ifndef QT_NO_STL
typedef std::bidirectional_iterator_tag iterator_category;
#endif
typedef T value_type;
#ifndef QT_NO_STL
typedef ptrdiff_t difference_type;
#else
typedef int difference_type;
#endif
typedef T* pointer;
typedef T& reference;
/**
* Variables
*/
TQMapNode<K,T>* node;
/**
* Functions
*/
TQMapIterator() : node( 0 ) {}
TQMapIterator( TQMapNode<K,T>* p ) : node( p ) {}
TQMapIterator( const TQMapIterator<K,T>& it ) : node( it.node ) {}
bool operator==( const TQMapIterator<K,T>& it ) const { return node == it.node; }
bool operator!=( const TQMapIterator<K,T>& it ) const { return node != it.node; }
T& operator*() { return node->data; }
const T& operator*() const { return node->data; }
// UDT for T = x*
// T* operator->() const { return &node->data; }
const K& key() const { return node->key; }
T& data() { return node->data; }
const T& data() const { return node->data; }
private:
int inc();
int dec();
public:
TQMapIterator<K,T>& operator++() {
inc();
return *this;
}
TQMapIterator<K,T> operator++(int) {
TQMapIterator<K,T> tmp = *this;
inc();
return tmp;
}
TQMapIterator<K,T>& operator--() {
dec();
return *this;
}
TQMapIterator<K,T> operator--(int) {
TQMapIterator<K,T> tmp = *this;
dec();
return tmp;
}
};
template <class K, class T>
Q_INLINE_TEMPLATES int TQMapIterator<K,T>::inc()
{
TQMapNodeBase* tmp = node;
if ( tmp->right ) {
tmp = tmp->right;
while ( tmp->left )
tmp = tmp->left;
} else {
TQMapNodeBase* y = tmp->parent;
while (tmp == y->right) {
tmp = y;
y = y->parent;
}
if (tmp->right != y)
tmp = y;
}
node = (NodePtr)tmp;
return 0;
}
template <class K, class T>
Q_INLINE_TEMPLATES int TQMapIterator<K,T>::dec()
{
TQMapNodeBase* tmp = node;
if (tmp->color == TQMapNodeBase::Red &&
tmp->parent->parent == tmp ) {
tmp = tmp->right;
} else if (tmp->left != 0) {
TQMapNodeBase* y = tmp->left;
while ( y->right )
y = y->right;
tmp = y;
} else {
TQMapNodeBase* y = tmp->parent;
while (tmp == y->left) {
tmp = y;
y = y->parent;
}
tmp = y;
}
node = (NodePtr)tmp;
return 0;
}
template<class K, class T>
class TQMapConstIterator
{
public:
/**
* Typedefs
*/
typedef TQMapNode< K, T >* NodePtr;
#ifndef QT_NO_STL
typedef std::bidirectional_iterator_tag iterator_category;
#endif
typedef T value_type;
#ifndef QT_NO_STL
typedef ptrdiff_t difference_type;
#else
typedef int difference_type;
#endif
typedef const T* pointer;
typedef const T& reference;
/**
* Variables
*/
TQMapNode<K,T>* node;
/**
* Functions
*/
TQMapConstIterator() : node( 0 ) {}
TQMapConstIterator( TQMapNode<K,T>* p ) : node( p ) {}
TQMapConstIterator( const TQMapConstIterator<K,T>& it ) : node( it.node ) {}
TQMapConstIterator( const TQMapIterator<K,T>& it ) : node( it.node ) {}
bool operator==( const TQMapConstIterator<K,T>& it ) const { return node == it.node; }
bool operator!=( const TQMapConstIterator<K,T>& it ) const { return node != it.node; }
const T& operator*() const { return node->data; }
// UDT for T = x*
// const T* operator->() const { return &node->data; }
const K& key() const { return node->key; }
const T& data() const { return node->data; }
private:
int inc();
int dec();
public:
TQMapConstIterator<K,T>& operator++() {
inc();
return *this;
}
TQMapConstIterator<K,T> operator++(int) {
TQMapConstIterator<K,T> tmp = *this;
inc();
return tmp;
}
TQMapConstIterator<K,T>& operator--() {
dec();
return *this;
}
TQMapConstIterator<K,T> operator--(int) {
TQMapConstIterator<K,T> tmp = *this;
dec();
return tmp;
}
};
template <class K, class T>
Q_INLINE_TEMPLATES int TQMapConstIterator<K,T>::inc()
{
TQMapNodeBase* tmp = node;
if ( tmp->right ) {
tmp = tmp->right;
while ( tmp->left )
tmp = tmp->left;
} else {
TQMapNodeBase* y = tmp->parent;
while (tmp == y->right) {
tmp = y;
y = y->parent;
}
if (tmp->right != y)
tmp = y;
}
node = (NodePtr)tmp;
return 0;
}
template <class K, class T>
Q_INLINE_TEMPLATES int TQMapConstIterator<K,T>::dec()
{
TQMapNodeBase* tmp = node;
if (tmp->color == TQMapNodeBase::Red &&
tmp->parent->parent == tmp ) {
tmp = tmp->right;
} else if (tmp->left != 0) {
TQMapNodeBase* y = tmp->left;
while ( y->right )
y = y->right;
tmp = y;
} else {
TQMapNodeBase* y = tmp->parent;
while (tmp == y->left) {
tmp = y;
y = y->parent;
}
tmp = y;
}
node = (NodePtr)tmp;
return 0;
}
// ### 4.0: rename to something without Private in it. Not really internal.
class Q_EXPORT TQMapPrivateBase : public TQShared
{
public:
TQMapPrivateBase() {
node_count = 0;
}
TQMapPrivateBase( const TQMapPrivateBase* _map) {
node_count = _map->node_count;
}
/**
* Implementations of basic tree algorithms
*/
void rotateLeft( TQMapNodeBase* x, TQMapNodeBase*& root);
void rotateRight( TQMapNodeBase* x, TQMapNodeBase*& root );
void rebalance( TQMapNodeBase* x, TQMapNodeBase*& root );
TQMapNodeBase* removeAndRebalance( TQMapNodeBase* z, TQMapNodeBase*& root,
TQMapNodeBase*& leftmost,
TQMapNodeBase*& rightmost );
/**
* Variables
*/
int node_count;
};
template <class Key, class T>
class TQMapPrivate : public TQMapPrivateBase
{
public:
/**
* Typedefs
*/
typedef TQMapIterator< Key, T > Iterator;
typedef TQMapConstIterator< Key, T > ConstIterator;
typedef TQMapNode< Key, T > Node;
typedef TQMapNode< Key, T >* NodePtr;
/**
* Functions
*/
TQMapPrivate();
TQMapPrivate( const TQMapPrivate< Key, T >* _map );
~TQMapPrivate() { clear(); delete header; }
NodePtr copy( NodePtr p );
void clear();
void clear( NodePtr p );
Iterator begin() { return Iterator( (NodePtr)(header->left ) ); }
Iterator end() { return Iterator( header ); }
ConstIterator begin() const { return ConstIterator( (NodePtr)(header->left ) ); }
ConstIterator end() const { return ConstIterator( header ); }
ConstIterator find(const Key& k) const;
void remove( Iterator it ) {
NodePtr del = (NodePtr) removeAndRebalance( it.node, header->parent, header->left, header->right );
delete del;
--node_count;
}
#ifdef QT_QMAP_DEBUG
void inorder( TQMapNodeBase* x = 0, int level = 0 ){
if ( !x )
x = header->parent;
if ( x->left )
inorder( x->left, level + 1 );
//cout << level << " Key=" << key(x) << " Value=" << ((NodePtr)x)->data << endl;
if ( x->right )
inorder( x->right, level + 1 );
}
#endif
#if 0
Iterator insertMulti(const Key& v){
TQMapNodeBase* y = header;
TQMapNodeBase* x = header->parent;
while (x != 0){
y = x;
x = ( v < key(x) ) ? x->left : x->right;
}
return insert(x, y, v);
}
#endif
Iterator insertSingle( const Key& k );
Iterator insert( TQMapNodeBase* x, TQMapNodeBase* y, const Key& k );
protected:
/**
* Helpers
*/
const Key& key( TQMapNodeBase* b ) const { return ((NodePtr)b)->key; }
/**
* Variables
*/
NodePtr header;
};
template <class Key, class T>
Q_INLINE_TEMPLATES TQMapPrivate<Key,T>::TQMapPrivate() {
header = new Node;
header->color = TQMapNodeBase::Red; // Mark the header
header->parent = 0;
header->left = header->right = header;
}
template <class Key, class T>
Q_INLINE_TEMPLATES TQMapPrivate<Key,T>::TQMapPrivate( const TQMapPrivate< Key, T >* _map ) : TQMapPrivateBase( _map ) {
header = new Node;
header->color = TQMapNodeBase::Red; // Mark the header
if ( _map->header->parent == 0 ) {
header->parent = 0;
header->left = header->right = header;
} else {
header->parent = copy( (NodePtr)(_map->header->parent) );
header->parent->parent = header;
header->left = header->parent->minimum();
header->right = header->parent->maximum();
}
}
template <class Key, class T>
Q_INLINE_TEMPLATES Q_TYPENAME TQMapPrivate<Key,T>::NodePtr TQMapPrivate<Key,T>::copy( Q_TYPENAME TQMapPrivate<Key,T>::NodePtr p )
{
if ( !p )
return 0;
NodePtr n = new Node( *p );
n->color = p->color;
if ( p->left ) {
n->left = copy( (NodePtr)(p->left) );
n->left->parent = n;
} else {
n->left = 0;
}
if ( p->right ) {
n->right = copy( (NodePtr)(p->right) );
n->right->parent = n;
} else {
n->right = 0;
}
return n;
}
template <class Key, class T>
Q_INLINE_TEMPLATES void TQMapPrivate<Key,T>::clear()
{
clear( (NodePtr)(header->parent) );
header->color = TQMapNodeBase::Red;
header->parent = 0;
header->left = header->right = header;
node_count = 0;
}
template <class Key, class T>
Q_INLINE_TEMPLATES void TQMapPrivate<Key,T>::clear( Q_TYPENAME TQMapPrivate<Key,T>::NodePtr p )
{
while ( p != 0 ) {
clear( (NodePtr)p->right );
NodePtr y = (NodePtr)p->left;
delete p;
p = y;
}
}
template <class Key, class T>
Q_INLINE_TEMPLATES Q_TYPENAME TQMapPrivate<Key,T>::ConstIterator TQMapPrivate<Key,T>::find(const Key& k) const
{
TQMapNodeBase* y = header; // Last node
TQMapNodeBase* x = header->parent; // Root node.
while ( x != 0 ) {
// If as k <= key(x) go left
if ( !( key(x) < k ) ) {
y = x;
x = x->left;
} else {
x = x->right;
}
}
// Was k bigger/smaller then the biggest/smallest
// element of the tree ? Return end()
if ( y == header || k < key(y) )
return ConstIterator( header );
return ConstIterator( (NodePtr)y );
}
template <class Key, class T>
Q_INLINE_TEMPLATES Q_TYPENAME TQMapPrivate<Key,T>::Iterator TQMapPrivate<Key,T>::insertSingle( const Key& k )
{
// Search correct position in the tree
TQMapNodeBase* y = header;
TQMapNodeBase* x = header->parent;
bool result = TRUE;
while ( x != 0 ) {
result = ( k < key(x) );
y = x;
x = result ? x->left : x->right;
}
// Get iterator on the last not empty one
Iterator j( (NodePtr)y );
if ( result ) {
// Smaller then the leftmost one ?
if ( j == begin() ) {
return insert(x, y, k );
} else {
// Perhaps daddy is the right one ?
--j;
}
}
// Really bigger ?
if ( (j.node->key) < k )
return insert(x, y, k );
// We are going to replace a node
return j;
}
template <class Key, class T>
Q_INLINE_TEMPLATES Q_TYPENAME TQMapPrivate<Key,T>::Iterator TQMapPrivate<Key,T>::insert( TQMapNodeBase* x, TQMapNodeBase* y, const Key& k )
{
NodePtr z = new Node( k );
if (y == header || x != 0 || k < key(y) ) {
y->left = z; // also makes leftmost = z when y == header
if ( y == header ) {
header->parent = z;
header->right = z;
} else if ( y == header->left )
header->left = z; // maintain leftmost pointing to min node
} else {
y->right = z;
if ( y == header->right )
header->right = z; // maintain rightmost pointing to max node
}
z->parent = y;
z->left = 0;
z->right = 0;
rebalance( z, header->parent );
++node_count;
return Iterator(z);
}
#ifdef QT_CHECK_RANGE
# if !defined( QT_NO_DEBUG ) && defined( QT_CHECK_MAP_RANGE )
# define QT_CHECK_INVALID_MAP_ELEMENT if ( empty() ) qWarning( "TQMap: Warning invalid element" )
# define QT_CHECK_INVALID_MAP_ELEMENT_FATAL Q_ASSERT( !empty() );
# else
# define QT_CHECK_INVALID_MAP_ELEMENT
# define QT_CHECK_INVALID_MAP_ELEMENT_FATAL
# endif
#else
# define QT_CHECK_INVALID_MAP_ELEMENT
# define QT_CHECK_INVALID_MAP_ELEMENT_FATAL
#endif
template <class T> class TQDeepCopy;
template<class Key, class T>
class TQMap
{
public:
/**
* Typedefs
*/
typedef Key key_type;
typedef T mapped_type;
typedef TQPair<const key_type, mapped_type> value_type;
typedef value_type* pointer;
typedef const value_type* const_pointer;
typedef value_type& reference;
typedef const value_type& const_reference;
#ifndef QT_NO_STL
typedef ptrdiff_t difference_type;
#else
typedef int difference_type;
#endif
typedef size_t size_type;
typedef TQMapIterator<Key,T> iterator;
typedef TQMapConstIterator<Key,T> const_iterator;
typedef TQPair<iterator,bool> insert_pair;
typedef TQMapIterator< Key, T > Iterator;
typedef TQMapConstIterator< Key, T > ConstIterator;
typedef T ValueType;
typedef TQMapPrivate< Key, T > Priv;
/**
* API
*/
TQMap()
{
sh = new TQMapPrivate< Key, T >;
}
TQMap( const TQMap<Key,T>& m )
{
sh = m.sh; sh->ref();
}
#ifndef QT_NO_STL
TQMap( const std::map<Key,T>& m )
{
sh = new TQMapPrivate<Key,T>;
Q_TYPENAME std::map<Key,T>::const_iterator it = m.begin();
for ( ; it != m.end(); ++it ) {
value_type p( (*it).first, (*it).second );
insert( p );
}
}
#endif
~TQMap()
{
if ( sh->deref() )
delete sh;
}
TQMap<Key,T>& operator= ( const TQMap<Key,T>& m );
#ifndef QT_NO_STL
TQMap<Key,T>& operator= ( const std::map<Key,T>& m )
{
clear();
Q_TYPENAME std::map<Key,T>::const_iterator it = m.begin();
for ( ; it != m.end(); ++it ) {
value_type p( (*it).first, (*it).second );
insert( p );
}
return *this;
}
#endif
iterator begin() { detach(); return sh->begin(); }
iterator end() { detach(); return sh->end(); }
const_iterator begin() const { return ((const Priv*)sh)->begin(); }
const_iterator end() const { return ((const Priv*)sh)->end(); }
const_iterator constBegin() const { return begin(); }
const_iterator constEnd() const { return end(); }
iterator replace( const Key& k, const T& v )
{
remove( k );
return insert( k, v );
}
size_type size() const
{
return sh->node_count;
}
bool empty() const
{
return sh->node_count == 0;
}
TQPair<iterator,bool> insert( const value_type& x );
void erase( iterator it )
{
detach();
sh->remove( it );
}
void erase( const key_type& k );
size_type count( const key_type& k ) const;
T& operator[] ( const Key& k );
void clear();
iterator find ( const Key& k )
{
detach();
return iterator( sh->find( k ).node );
}
const_iterator find ( const Key& k ) const { return sh->find( k ); }
const T& operator[] ( const Key& k ) const
{ QT_CHECK_INVALID_MAP_ELEMENT; return sh->find( k ).data(); }
bool contains ( const Key& k ) const
{ return find( k ) != end(); }
//{ return sh->find( k ) != ((const Priv*)sh)->end(); }
size_type count() const { return sh->node_count; }
TQValueList<Key> keys() const {
TQValueList<Key> r;
for (const_iterator i=begin(); i!=end(); ++i)
r.append(i.key());
return r;
}
TQValueList<T> values() const {
TQValueList<T> r;
for (const_iterator i=begin(); i!=end(); ++i)
r.append(*i);
return r;
}
bool isEmpty() const { return sh->node_count == 0; }
iterator insert( const Key& key, const T& value, bool overwrite = TRUE );
void remove( iterator it ) { detach(); sh->remove( it ); }
void remove( const Key& k );
#if defined(Q_FULL_TEMPLATE_INSTANTIATION)
bool operator==( const TQMap<Key,T>& ) const { return FALSE; }
#ifndef QT_NO_STL
bool operator==( const std::map<Key,T>& ) const { return FALSE; }
#endif
#endif
protected:
/**
* Helpers
*/
void detach() { if ( sh->count > 1 ) detachInternal(); }
Priv* sh;
private:
void detachInternal();
friend class TQDeepCopy< TQMap<Key,T> >;
};
template<class Key, class T>
Q_INLINE_TEMPLATES TQMap<Key,T>& TQMap<Key,T>::operator= ( const TQMap<Key,T>& m )
{
m.sh->ref();
if ( sh->deref() )
delete sh;
sh = m.sh;
return *this;
}
template<class Key, class T>
Q_INLINE_TEMPLATES Q_TYPENAME TQMap<Key,T>::insert_pair TQMap<Key,T>::insert( const Q_TYPENAME TQMap<Key,T>::value_type& x )
{
detach();
size_type n = size();
iterator it = sh->insertSingle( x.first );
bool inserted = FALSE;
if ( n < size() ) {
inserted = TRUE;
it.data() = x.second;
}
return TQPair<iterator,bool>( it, inserted );
}
template<class Key, class T>
Q_INLINE_TEMPLATES void TQMap<Key,T>::erase( const Key& k )
{
detach();
iterator it( sh->find( k ).node );
if ( it != end() )
sh->remove( it );
}
template<class Key, class T>
Q_INLINE_TEMPLATES Q_TYPENAME TQMap<Key,T>::size_type TQMap<Key,T>::count( const Key& k ) const
{
const_iterator it( sh->find( k ).node );
if ( it != end() ) {
size_type c = 0;
while ( it != end() ) {
++it;
++c;
}
return c;
}
return 0;
}
template<class Key, class T>
Q_INLINE_TEMPLATES T& TQMap<Key,T>::operator[] ( const Key& k )
{
detach();
TQMapNode<Key,T>* p = sh->find( k ).node;
if ( p != sh->end().node )
return p->data;
return insert( k, T() ).data();
}
template<class Key, class T>
Q_INLINE_TEMPLATES void TQMap<Key,T>::clear()
{
if ( sh->count == 1 )
sh->clear();
else {
sh->deref();
sh = new TQMapPrivate<Key,T>;
}
}
template<class Key, class T>
Q_INLINE_TEMPLATES Q_TYPENAME TQMap<Key,T>::iterator TQMap<Key,T>::insert( const Key& key, const T& value, bool overwrite )
{
detach();
size_type n = size();
iterator it = sh->insertSingle( key );
if ( overwrite || n < size() )
it.data() = value;
return it;
}
template<class Key, class T>
Q_INLINE_TEMPLATES void TQMap<Key,T>::remove( const Key& k )
{
detach();
iterator it( sh->find( k ).node );
if ( it != end() )
sh->remove( it );
}
template<class Key, class T>
Q_INLINE_TEMPLATES void TQMap<Key,T>::detachInternal()
{
sh->deref(); sh = new TQMapPrivate<Key,T>( sh );
}
#ifndef QT_NO_DATASTREAM
template<class Key, class T>
Q_INLINE_TEMPLATES TQDataStream& operator>>( TQDataStream& s, TQMap<Key,T>& m ) {
m.clear();
Q_UINT32 c;
s >> c;
for( Q_UINT32 i = 0; i < c; ++i ) {
Key k; T t;
s >> k >> t;
m.insert( k, t );
if ( s.atEnd() )
break;
}
return s;
}
template<class Key, class T>
Q_INLINE_TEMPLATES TQDataStream& operator<<( TQDataStream& s, const TQMap<Key,T>& m ) {
s << (Q_UINT32)m.size();
TQMapConstIterator<Key,T> it = m.begin();
for( ; it != m.end(); ++it )
s << it.key() << it.data();
return s;
}
#endif
#define Q_DEFINED_QMAP
#include "qwinexport.h"
#endif // TQMAP_H
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