| /**************************************************************************** |
| ** |
| ** Copyright (C) 2020 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> |
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| ** |
| ** This file is part of the QtQuick module of the Qt Toolkit. |
| ** |
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| ** General Public License version 3 as published by the Free Software |
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| ** |
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| ** Alternatively, this file may be used under the terms of the GNU |
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| ** Public license version 3 or any later version approved by the KDE Free |
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| ****************************************************************************/ |
| |
| #ifndef QQUICKPARTICLEFLATSET_P_H |
| #define QQUICKPARTICLEFLATSET_P_H |
| |
| #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 |