qmap.h

奇趣公司比较新的qt/emd版本

    // more Qt
    typedef iterator Iterator;
    typedef const_iterator ConstIterator;
    inline int count() const { return d->size; }
    iterator find(const Key &key);
    const_iterator find(const Key &key) const;
    const_iterator constFind(const Key &key) const;
    iterator lowerBound(const Key &key);
    const_iterator lowerBound(const Key &key) const;
    iterator upperBound(const Key &key);
    const_iterator upperBound(const Key &key) const;
    iterator insert(const Key &key, const T &value);
#ifdef QT3_SUPPORT
    QT3_SUPPORT iterator insert(const Key &key, const T &value, bool overwrite);
#endif
    iterator insertMulti(const Key &key, const T &value);
#ifdef QT3_SUPPORT
    inline QT3_SUPPORT iterator replace(const Key &key, const T &value) { return insert(key, value); }
#endif
    QMap<Key, T> &unite(const QMap<Key, T> &other);

    // STL compatibility
    typedef Key key_type;
    typedef T mapped_type;
    typedef ptrdiff_t difference_type;
    typedef int size_type;
    inline bool empty() const { return isEmpty(); }

#ifdef QT_QMAP_DEBUG
    inline void dump() const { d->dump(); }
#endif

private:
    void detach_helper();
    void freeData(QMapData *d);
    QMapData::Node *findNode(const Key &key) const;
    QMapData::Node *mutableFindNode(QMapData::Node *update[], const Key &key) const;
    QMapData::Node *node_create(QMapData *d, QMapData::Node *update[], const Key &key,
                                const T &value);
};

template <class Key, class T>
Q_INLINE_TEMPLATE QMap<Key, T> &QMap<Key, T>::operator=(const QMap<Key, T> &other)
{
    if (d != other.d) {
        QMapData *x = other.d;
        x->ref.ref();
        x = qAtomicSetPtr(&d, x);
        if (!x->ref.deref())
            freeData(x);
        if (!d->sharable)
            detach_helper();
    }
    return *this;
}

template <class Key, class T>
Q_INLINE_TEMPLATE void QMap<Key, T>::clear()
{
    *this = QMap<Key, T>();
}

template <class Key, class T>
Q_INLINE_TEMPLATE typename QMapData::Node *
QMap<Key, T>::node_create(QMapData *adt, QMapData::Node *aupdate[], const Key &akey, const T &avalue)
{
    QMapData::Node *abstractNode = adt->node_create(aupdate, payload());
    Node *concreteNode = concrete(abstractNode);
    new (&concreteNode->key) Key(akey);
    new (&concreteNode->value) T(avalue);
    return abstractNode;
}

template <class Key, class T>
Q_INLINE_TEMPLATE QMapData::Node *QMap<Key, T>::findNode(const Key &akey) const
{
    QMapData::Node *cur = e;
    QMapData::Node *next = e;

    for (int i = d->topLevel; i >= 0; i--) {
        while ((next = cur->forward[i]) != e && qMapLessThanKey<Key>(concrete(next)->key, akey))
            cur = next;
    }

    if (next != e && !qMapLessThanKey<Key>(akey, concrete(next)->key)) {
        return next;
    } else {
        return e;
    }
}

template <class Key, class T>
Q_INLINE_TEMPLATE const T QMap<Key, T>::value(const Key &akey) const
{
    QMapData::Node *node;
    if (d->size == 0 || (node = findNode(akey)) == e) {
        return T();
    } else {
        return concrete(node)->value;
    }
}

template <class Key, class T>
Q_INLINE_TEMPLATE const T QMap<Key, T>::value(const Key &akey, const T &adefaultValue) const
{
    QMapData::Node *node;
    if (d->size == 0 || (node = findNode(akey)) == e) {
        return adefaultValue;
    } else {
        return concrete(node)->value;
    }
}

template <class Key, class T>
Q_INLINE_TEMPLATE const T QMap<Key, T>::operator[](const Key &akey) const
{
    return value(akey);
}

template <class Key, class T>
Q_INLINE_TEMPLATE T &QMap<Key, T>::operator[](const Key &akey)
{
    detach();

    QMapData::Node *update[QMapData::LastLevel + 1];
    QMapData::Node *node = mutableFindNode(update, akey);
    if (node == e)
        node = node_create(d, update, akey, T());
    return concrete(node)->value;
}

template <class Key, class T>
Q_INLINE_TEMPLATE int QMap<Key, T>::count(const Key &akey) const
{
    int cnt = 0;
    QMapData::Node *node = findNode(akey);
    if (node != e) {
        do {
            ++cnt;
            node = node->forward[0];
        } while (node != e && !qMapLessThanKey<Key>(akey, concrete(node)->key));
    }
    return cnt;
}

template <class Key, class T>
Q_INLINE_TEMPLATE bool QMap<Key, T>::contains(const Key &akey) const
{
    return findNode(akey) != e;
}

template <class Key, class T>
Q_INLINE_TEMPLATE typename QMap<Key, T>::iterator QMap<Key, T>::insert(const Key &akey,
                                                                       const T &avalue)
{
    detach();

    QMapData::Node *update[QMapData::LastLevel + 1];
    QMapData::Node *node = mutableFindNode(update, akey);
    if (node == e) {
        node = node_create(d, update, akey, avalue);
    } else {
        concrete(node)->value = avalue;
    }
    return iterator(node);
}

#ifdef QT3_SUPPORT
template <class Key, class T>
Q_INLINE_TEMPLATE typename QMap<Key, T>::iterator QMap<Key, T>::insert(const Key &akey,
                                                                       const T &avalue,
                                                                       bool aoverwrite)
{
    detach();

    QMapData::Node *update[QMapData::LastLevel + 1];
    QMapData::Node *node = mutableFindNode(update, akey);
    if (node == e) {
        node = node_create(d, update, akey, avalue);
    } else {
        if (aoverwrite)
            concrete(node)->value = avalue;
    }
    return iterator(node);
}
#endif

template <class Key, class T>
Q_INLINE_TEMPLATE typename QMap<Key, T>::iterator QMap<Key, T>::insertMulti(const Key &akey,
                                                                            const T &avalue)
{
    detach();

    QMapData::Node *update[QMapData::LastLevel + 1];
    mutableFindNode(update, akey);
    return iterator(node_create(d, update, akey, avalue));
}

template <class Key, class T>
Q_INLINE_TEMPLATE typename QMap<Key, T>::const_iterator QMap<Key, T>::find(const Key &akey) const
{
    return const_iterator(findNode(akey));
}

template <class Key, class T>
Q_INLINE_TEMPLATE typename QMap<Key, T>::const_iterator QMap<Key, T>::constFind(const Key &akey) const
{
    return const_iterator(findNode(akey));
}

template <class Key, class T>
Q_INLINE_TEMPLATE typename QMap<Key, T>::iterator QMap<Key, T>::find(const Key &akey)
{
    detach();
    return iterator(findNode(akey));
}

template <class Key, class T>
Q_INLINE_TEMPLATE QMap<Key, T> &QMap<Key, T>::unite(const QMap<Key, T> &other)
{
    QMap<Key, T> copy(other);
    const_iterator it = copy.constEnd();
    const const_iterator b = copy.constBegin();
    while (it != b) {
        --it;
        insertMulti(it.key(), it.value());
    }
    return *this;
}

template <class Key, class T>
Q_OUTOFLINE_TEMPLATE void QMap<Key, T>::freeData(QMapData *x)
{
    if (QTypeInfo<Key>::isComplex || QTypeInfo<T>::isComplex) {
        QMapData::Node *y = reinterpret_cast<QMapData::Node *>(x);
        QMapData::Node *cur = y;
        QMapData::Node *next = cur->forward[0];
        while (next != y) {
            cur = next;
            next = cur->forward[0];
#if defined(_MSC_VER) && (_MSC_VER >= 1300)
#pragma warning(disable:4189)
#endif
            Node *concreteNode = concrete(cur);
            concreteNode->key.~Key();
            concreteNode->value.~T();
#if defined(_MSC_VER) && (_MSC_VER >= 1300)
#pragma warning(default:4189)
#endif
        }
    }
    x->continueFreeData(payload());
}

template <class Key, class T>
Q_OUTOFLINE_TEMPLATE int QMap<Key, T>::remove(const Key &akey)
{
    detach();

    QMapData::Node *update[QMapData::LastLevel + 1];
    QMapData::Node *cur = e;
    QMapData::Node *next = e;
    int oldSize = d->size;

    for (int i = d->topLevel; i >= 0; i--) {
        while ((next = cur->forward[i]) != e && qMapLessThanKey<Key>(concrete(next)->key, akey))
            cur = next;
        update[i] = cur;
    }

    if (next != e && !qMapLessThanKey<Key>(akey, concrete(next)->key)) {
        bool deleteNext = true;
        do {
            cur = next;
            next = cur->forward[0];
            deleteNext = (next != e && !qMapLessThanKey<Key>(concrete(cur)->key, concrete(next)->key));
            concrete(cur)->key.~Key();
            concrete(cur)->value.~T();
            d->node_delete(update, payload(), cur);
        } while (deleteNext);
    }
    return oldSize - d->size;
}

template <class Key, class T>
Q_OUTOFLINE_TEMPLATE T QMap<Key, T>::take(const Key &akey)
{
    detach();

    QMapData::Node *update[QMapData::LastLevel + 1];
    QMapData::Node *cur = e;
    QMapData::Node *next = e;

    for (int i = d->topLevel; i >= 0; i--) {
        while ((next = cur->forward[i]) != e && qMapLessThanKey<Key>(concrete(next)->key, akey))
            cur = next;
        update[i] = cur;
    }

    if (next != e && !qMapLessThanKey<Key>(akey, concrete(next)->key)) {
        T t = concrete(next)->value;
        concrete(next)->key.~Key();
        concrete(next)->value.~T();
        d->node_delete(update, payload(), next);
        return t;
    }
    return T();
}

template <class Key, class T>
Q_OUTOFLINE_TEMPLATE typename QMap<Key, T>::iterator QMap<Key, T>::erase(iterator it)
{
    QMapData::Node *update[QMapData::LastLevel + 1];
    QMapData::Node *cur = e;
    QMapData::Node *next = e;

    if (it == iterator(e))
        return it;

    for (int i = d->topLevel; i >= 0; i--) {
        while ((next = cur->forward[i]) != e && qMapLessThanKey<Key>(concrete(next)->key, it.key()))
            cur = next;
        update[i] = cur;
    }

    while (next != e) {
        cur = next;
        next = cur->forward[0];
        if (cur == it) {
            concrete(cur)->key.~Key();
            concrete(cur)->value.~T();
            d->node_delete(update, payload(), cur);
            return iterator(next);
        }

        for (int i = 0; i <= d->topLevel; ++i) {
            if (update[i]->forward[i] != cur)