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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qbs.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QBS_NODESET_H
#define QBS_NODESET_H
#include <set>
#include <cstddef>
#include <QSharedData>
namespace qbs {
namespace Internal {
class BuildGraphNode;
class NodeSetData : public QSharedData
{
public:
std::set<BuildGraphNode *> m_data;
};
class PersistentPool;
/**
* Set of build graph nodes.
* This is faster than QSet when iterating over the container.
*/
class NodeSet
{
public:
NodeSet();
NodeSet &unite(const NodeSet &other);
typedef std::set<BuildGraphNode *>::const_iterator const_iterator;
typedef std::set<BuildGraphNode *>::iterator iterator;
typedef BuildGraphNode * value_type;
iterator begin() { return d->m_data.begin(); }
iterator end() { return d->m_data.end(); }
const_iterator begin() const { return d->m_data.begin(); }
const_iterator end() const { return d->m_data.end(); }
const_iterator constBegin() const { return d->m_data.begin(); }
const_iterator constEnd() const { return d->m_data.end(); }
void insert(BuildGraphNode *node)
{
d->m_data.insert(node);
}
void operator+=(BuildGraphNode *node)
{
d->m_data.insert(node);
}
NodeSet &operator<<(BuildGraphNode *node)
{
d->m_data.insert(node);
return *this;
}
void remove(BuildGraphNode *node);
bool contains(BuildGraphNode *node) const
{
return d->m_data.find(node) != d->m_data.end();
}
void clear()
{
d->m_data.clear();
}
bool isEmpty() const
{
return d->m_data.empty();
}
int count() const
{
return (int)d->m_data.size();
}
void reserve(int)
{
// no-op
}
bool operator==(const NodeSet &other) const { return d->m_data == other.d->m_data; }
bool operator!=(const NodeSet &other) const { return !(*this == other); }
void load(PersistentPool &pool);
void store(PersistentPool &pool) const;
private:
QSharedDataPointer<NodeSetData> d;
};
template <class T>
class TypeFilter
{
const NodeSet &m_nodes;
public:
TypeFilter(const NodeSet &nodes)
: m_nodes(nodes)
{
}
class const_iterator : public std::iterator<std::forward_iterator_tag, T *>
{
const NodeSet &m_nodes;
NodeSet::const_iterator m_it;
public:
const_iterator(const NodeSet &nodes, const NodeSet::const_iterator &it)
: m_nodes(nodes), m_it(it)
{
while (m_it != m_nodes.constEnd() && dynamic_cast<T *>(*m_it) == 0)
++m_it;
}
bool operator==(const const_iterator &rhs)
{
return m_it == rhs.m_it;
}
bool operator!=(const const_iterator &rhs)
{
return !(*this == rhs);
}
const_iterator &operator++()
{
for (;;) {
++m_it;
if (m_it == m_nodes.constEnd() || dynamic_cast<T *>(*m_it))
return *this;
}
}
T *operator*() const
{
return static_cast<T *>(*m_it);
}
};
const_iterator begin() const
{
return const_iterator(m_nodes, m_nodes.constBegin());
}
const_iterator end() const
{
return const_iterator(m_nodes, m_nodes.constEnd());
}
};
template <class T>
const TypeFilter<T> filterByType(const NodeSet &nodes)
{
return TypeFilter<T>(nodes);
}
} // namespace Internal
} // namespace qbs
#endif // QBS_NODESET_H
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