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/****************************************************************************
**
** Copyright (C) 2020 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQuick module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#ifndef QQUICKPARTICLEFLATSET_P_H
#define QQUICKPARTICLEFLATSET_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtGlobal>
#include <vector>
#include <algorithm>
#include <iterator>
QT_BEGIN_NAMESPACE
// Minimal API, just for the consumption of Qt Quick Particles.
// For extra safety, it's in a private namespace
namespace QtQuickParticlesPrivate {
template <typename T>
class QFlatSet
{
public:
using iterator = typename std::vector<T>::iterator;
using const_iterator = typename std::vector<T>::const_iterator;
using value_type = typename std::vector<T>::value_type;
using size_type = int;
iterator find(const T &t)
{
return std::find(begin(), end(), t);
}
const_iterator find(const T &t) const
{
return std::find(begin(), end(), t);
}
bool contains(const T &t) const
{
return find(t) != end();
}
void clear()
{
m_data.clear();
}
void reserve(int capacity)
{
m_data.reserve(capacity);
}
iterator insert(const T &t)
{
auto i = find(t);
if (i != end())
return i;
T copy = t;
m_data.push_back(std::move(copy));
return std::prev(m_data.end());
}
iterator insert(T &&t)
{
auto i = find(t);
if (i != end())
return i;
m_data.push_back(std::move(t));
return std::prev(m_data.end());
}
size_type remove(const T &t)
{
auto i = std::find(m_data.begin(), m_data.end(), t);
if (i != m_data.end()) {
m_data.erase(i);
return 1;
}
return 0;
}
iterator operator<<(const T &t)
{
return insert(t);
}
iterator operator<<(T &&t)
{
return insert(std::move(t));
}
iterator begin() { return m_data.begin(); }
const_iterator begin() const { return m_data.begin(); }
const_iterator cbegin() const { return m_data.cbegin(); }
iterator end() { return m_data.end(); }
const_iterator end() const { return m_data.end(); }
const_iterator cend() const { return m_data.cend(); }
private:
std::vector<T> m_data;
};
} // namespace QtQuickParticlesPrivate
QT_END_NAMESPACE
#endif // QQUICKPARTICLEFLATSET_P_H
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