summaryrefslogtreecommitdiffstats
path: root/qtools/qmap.h
diff options
context:
space:
mode:
Diffstat (limited to 'qtools/qmap.h')
-rw-r--r--qtools/qmap.h606
1 files changed, 606 insertions, 0 deletions
diff --git a/qtools/qmap.h b/qtools/qmap.h
new file mode 100644
index 0000000..f384a3d
--- /dev/null
+++ b/qtools/qmap.h
@@ -0,0 +1,606 @@
+/****************************************************************************
+**
+**
+** Definition of QMap class
+**
+** Created : 990406
+**
+** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
+**
+** This file is part of the tools module of the Qt GUI Toolkit.
+**
+** This file may be distributed under the terms of the Q Public License
+** as defined by Trolltech AS of Norway and appearing in the file
+** LICENSE.QPL included in the packaging of this file.
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.
+**
+** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
+** licenses may use this file in accordance with the Qt Commercial License
+** Agreement provided with the Software.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
+** information about Qt Commercial License Agreements.
+** See http://www.trolltech.com/qpl/ for QPL licensing information.
+** See http://www.trolltech.com/gpl/ for GPL licensing information.
+**
+** Contact info@trolltech.com if any conditions of this licensing are
+** not clear to you.
+**
+**********************************************************************/
+
+#ifndef QMAP_H
+#define QMAP_H
+
+#ifndef QT_H
+#include "qshared.h"
+#include "qdatastream.h"
+#endif // QT_H
+
+
+struct QMapNodeBase
+{
+ enum Color { Red, Black };
+
+ QMapNodeBase* left;
+ QMapNodeBase* right;
+ QMapNodeBase* parent;
+
+ Color color;
+
+ QMapNodeBase* minimum() {
+ QMapNodeBase* x = this;
+ while ( x->left )
+ x = x->left;
+ return x;
+ }
+
+ QMapNodeBase* maximum() {
+ QMapNodeBase* x = this;
+ while ( x->right )
+ x = x->right;
+ return x;
+ }
+};
+
+
+template <class K, class T>
+struct QMapNode : public QMapNodeBase
+{
+ QMapNode( const K& _key, const T& _data ) { data = _data; key = _key; }
+ QMapNode( const K& _key ) { key = _key; }
+ QMapNode( const QMapNode<K,T>& _n ) { key = _n.key; data = _n.data; }
+ QMapNode() { }
+ T data;
+ K key;
+};
+
+
+template<class K, class T>
+class Q_EXPORT QMapIterator
+{
+ public:
+ /**
+ * Typedefs
+ */
+ typedef QMapNode< K, T >* NodePtr;
+
+ /**
+ * Variables
+ */
+ QMapNode<K,T>* node;
+
+ /**
+ * Functions
+ */
+ QMapIterator() : node( 0 ) {}
+ QMapIterator( QMapNode<K,T>* p ) : node( p ) {}
+ QMapIterator( const QMapIterator<K,T>& it ) : node( it.node ) {}
+
+ bool operator==( const QMapIterator<K,T>& it ) const { return node == it.node; }
+ bool operator!=( const QMapIterator<K,T>& it ) const { return node != it.node; }
+ T& operator*() { return node->data; }
+ const T& operator*() const { return node->data; }
+
+ // Cannot have this - some compilers are too stupid
+ //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() {
+ QMapNodeBase* tmp = node;
+ if ( tmp->right ) {
+ tmp = tmp->right;
+ while ( tmp->left )
+ tmp = tmp->left;
+ } else {
+ QMapNodeBase* y = tmp->parent;
+ while (tmp == y->right) {
+ tmp = y;
+ y = y->parent;
+ }
+ if (tmp->right != y)
+ tmp = y;
+ }
+ node = (NodePtr)tmp;
+ return 0;
+ }
+
+ int dec() {
+ QMapNodeBase* tmp = node;
+ if (tmp->color == QMapNodeBase::Red &&
+ tmp->parent->parent == tmp ) {
+ tmp = tmp->right;
+ } else if (tmp->left != 0) {
+ QMapNodeBase* y = tmp->left;
+ while ( y->right )
+ y = y->right;
+ tmp = y;
+ } else {
+ QMapNodeBase* y = tmp->parent;
+ while (tmp == y->left) {
+ tmp = y;
+ y = y->parent;
+ }
+ tmp = y;
+ }
+ node = (NodePtr)tmp;
+ return 0;
+ }
+
+public:
+ QMapIterator<K,T>& operator++() {
+ inc();
+ return *this;
+ }
+
+ QMapIterator<K,T> operator++(int) {
+ QMapIterator<K,T> tmp = *this;
+ inc();
+ return tmp;
+ }
+
+ QMapIterator<K,T>& operator--() {
+ dec();
+ return *this;
+ }
+
+ QMapIterator<K,T> operator--(int) {
+ QMapIterator<K,T> tmp = *this;
+ dec();
+ return tmp;
+ }
+};
+
+template<class K, class T>
+class Q_EXPORT QMapConstIterator
+{
+ public:
+ /**
+ * Typedefs
+ */
+ typedef QMapNode< K, T >* NodePtr;
+
+ /**
+ * Variables
+ */
+ QMapNode<K,T>* node;
+
+ /**
+ * Functions
+ */
+ QMapConstIterator() : node( 0 ) {}
+ QMapConstIterator( QMapNode<K,T>* p ) : node( p ) {}
+ QMapConstIterator( const QMapConstIterator<K,T>& it ) : node( it.node ) {}
+ QMapConstIterator( const QMapIterator<K,T>& it ) : node( it.node ) {}
+
+ bool operator==( const QMapConstIterator<K,T>& it ) const { return node == it.node; }
+ bool operator!=( const QMapConstIterator<K,T>& it ) const { return node != it.node; }
+ const T& operator*() const { return node->data; }
+
+ // Cannot have this - some compilers are too stupid
+ //const T* operator->() const { return &(node->data); }
+
+ const K& key() const { return node->key; }
+ const T& data() const { return node->data; }
+
+private:
+ int inc() {
+ QMapNodeBase* tmp = node;
+ if ( tmp->right ) {
+ tmp = tmp->right;
+ while ( tmp->left )
+ tmp = tmp->left;
+ } else {
+ QMapNodeBase* y = tmp->parent;
+ while (tmp == y->right) {
+ tmp = y;
+ y = y->parent;
+ }
+ if (tmp->right != y)
+ tmp = y;
+ }
+ node = (NodePtr)tmp;
+ return 0;
+ }
+
+ int dec() {
+ QMapNodeBase* tmp = node;
+ if (tmp->color == QMapNodeBase::Red &&
+ tmp->parent->parent == tmp ) {
+ tmp = tmp->right;
+ } else if (tmp->left != 0) {
+ QMapNodeBase* y = tmp->left;
+ while ( y->right )
+ y = y->right;
+ tmp = y;
+ } else {
+ QMapNodeBase* y = tmp->parent;
+ while (tmp == y->left) {
+ tmp = y;
+ y = y->parent;
+ }
+ tmp = y;
+ }
+ node = (NodePtr)tmp;
+ return 0;
+ }
+
+public:
+ QMapConstIterator<K,T>& operator++() {
+ inc();
+ return *this;
+ }
+
+ QMapConstIterator<K,T> operator++(int) {
+ QMapConstIterator<K,T> tmp = *this;
+ inc();
+ return tmp;
+ }
+
+ QMapConstIterator<K,T>& operator--() {
+ dec();
+ return *this;
+ }
+
+ QMapConstIterator<K,T> operator--(int) {
+ QMapConstIterator<K,T> tmp = *this;
+ dec();
+ return tmp;
+ }
+};
+
+
+class Q_EXPORT QMapPrivateBase : public QShared
+{
+public:
+ QMapPrivateBase() {
+ node_count = 0;
+ }
+ QMapPrivateBase( const QMapPrivateBase* _map) {
+ node_count = _map->node_count;
+ }
+
+ /**
+ * Implementations of basic tree algorithms
+ */
+ void rotateLeft( QMapNodeBase* x, QMapNodeBase*& root);
+ void rotateRight( QMapNodeBase* x, QMapNodeBase*& root );
+ void rebalance( QMapNodeBase* x, QMapNodeBase*& root );
+ QMapNodeBase* removeAndRebalance( QMapNodeBase* z, QMapNodeBase*& root,
+ QMapNodeBase*& leftmost,
+ QMapNodeBase*& rightmost );
+
+ /**
+ * Variables
+ */
+ int node_count;
+};
+
+
+template <class Key, class T>
+class QMapPrivate : public QMapPrivateBase
+{
+public:
+ /**
+ * Typedefs
+ */
+ typedef QMapIterator< Key, T > Iterator;
+ typedef QMapConstIterator< Key, T > ConstIterator;
+ typedef QMapNode< Key, T > Node;
+ typedef QMapNode< Key, T >* NodePtr;
+
+ /**
+ * Functions
+ */
+ QMapPrivate() {
+ header = new Node;
+ header->color = QMapNodeBase::Red; // Mark the header
+ header->parent = 0;
+ header->left = header->right = header;
+ }
+ QMapPrivate( const QMapPrivate< Key, T >* _map ) : QMapPrivateBase( _map ) {
+ header = new Node;
+ header->color = QMapNodeBase::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();
+ }
+ }
+ ~QMapPrivate() { clear(); delete header; }
+
+ NodePtr copy( 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;
+ }
+
+ void clear() {
+ clear( (NodePtr)(header->parent) );
+ header->color = QMapNodeBase::Red;
+ header->parent = 0;
+ header->left = header->right = header;
+ node_count = 0;
+ }
+
+ void clear( NodePtr p ) {
+ while ( p != 0 ) {
+ clear( (NodePtr)p->right );
+ NodePtr y = (NodePtr)p->left;
+ delete p;
+ p = y;
+ }
+ }
+
+ 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 {
+ QMapNodeBase* y = header; // Last node
+ QMapNodeBase* 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 );
+ }
+
+ 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( QMapNodeBase* 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
+
+ Iterator insertMulti(const Key& v){
+ QMapNodeBase* y = header;
+ QMapNodeBase* x = header->parent;
+ while (x != 0){
+ y = x;
+ x = ( v < key(x) ) ? x->left : x->right;
+ }
+ return insert(x, y, v);
+ }
+
+ Iterator insertSingle( const Key& k ) {
+ // Search correct position in the tree
+ QMapNodeBase* y = header;
+ QMapNodeBase* 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;
+ }
+
+ Iterator insert( QMapNodeBase* x, QMapNodeBase* 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);
+ }
+
+protected:
+ /**
+ * Helpers
+ */
+ const Key& key( QMapNodeBase* b ) const { return ((NodePtr)b)->key; }
+
+ /**
+ * Variables
+ */
+ NodePtr header;
+};
+
+
+template<class Key, class T>
+class Q_EXPORT QMap
+{
+public:
+ /**
+ * Typedefs
+ */
+ typedef QMapIterator< Key, T > Iterator;
+ typedef QMapConstIterator< Key, T > ConstIterator;
+ typedef T ValueType;
+ typedef QMapPrivate< Key, T > Priv;
+
+ /**
+ * API
+ */
+ QMap() { sh = new QMapPrivate< Key, T >; }
+ QMap( const QMap<Key,T>& m ) { sh = m.sh; sh->ref(); }
+ ~QMap() { if ( sh->deref() ) delete sh; }
+
+ QMap<Key,T>& operator= ( const QMap<Key,T>& m )
+ { m.sh->ref(); if ( sh->deref() ) delete sh; sh = m.sh; return *this; }
+
+ Iterator begin() { detach(); return sh->begin(); }
+ Iterator end() { detach(); return sh->end(); }
+ ConstIterator begin() const { return ((const Priv*)sh)->begin(); }
+ ConstIterator end() const { return ((const Priv*)sh)->end(); }
+
+ Iterator find ( const Key& k )
+ { detach(); return Iterator( sh->find( k ).node ); }
+ ConstIterator find ( const Key& k ) const
+ { return sh->find( k ); }
+ T& operator[] ( const Key& k ) {
+ detach(); QMapNode<Key,T>* p = sh->find( k ).node;
+ if ( p != sh->end().node ) return p->data;
+ return insert( k, T() ).data(); }
+ const T& operator[] ( const Key& k ) const
+ { return sh->find( k ).data(); }
+ bool contains ( const Key& k ) const
+ { return find( k ) != end(); }
+ //{ return sh->find( k ) != ((const Priv*)sh)->end(); }
+
+ uint count() const { return sh->node_count; }
+
+ bool isEmpty() const { return sh->node_count == 0; }
+
+ Iterator insert( const Key& key, const T& value ) {
+ detach();
+ Iterator it = sh->insertSingle( key );
+ it.data() = value;
+ return it;
+ }
+
+ void remove( Iterator it ) { detach(); sh->remove( it ); }
+ void remove( const Key& k ) {
+ detach();
+ Iterator it( sh->find( k ).node );
+ if ( it != end() )
+ sh->remove( it );
+ }
+
+ Iterator replace( const Key& k, const T& v ) {
+ remove( k );
+ return insert( k, v );
+ }
+
+ void clear() { if ( sh->count == 1 ) sh->clear(); else { sh->deref(); sh = new QMapPrivate<Key,T>; } }
+
+#if defined(Q_FULL_TEMPLATE_INSTANTIATION)
+ bool operator==( const QMap<Key,T>& ) const { return FALSE; }
+#endif
+
+protected:
+ /**
+ * Helpers
+ */
+ void detach() { if ( sh->count > 1 ) { sh->deref(); sh = new QMapPrivate<Key,T>( sh ); } }
+
+ Priv* sh;
+};
+
+
+#ifndef QT_NO_DATASTREAM
+template<class Key, class T>
+inline QDataStream& operator>>( QDataStream& s, QMap<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 );
+ }
+ return s;
+}
+
+
+template<class Key, class T>
+inline QDataStream& operator<<( QDataStream& s, const QMap<Key,T>& m ) {
+ s << (Q_UINT32)m.count();
+ QMapConstIterator<Key,T> it = m.begin();
+ for( ; it != m.end(); ++it )
+ s << it.key() << it.data();
+ return s;
+}
+#endif
+
+#endif // QMAP_H
generated by cgit v0.12 at 2024-12-27 15:33:49 (GMT)