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Diffstat (limited to 'sources/shiboken2/tests/libsmart/smart.h')
| -rw-r--r-- | sources/shiboken2/tests/libsmart/smart.h | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/sources/shiboken2/tests/libsmart/smart.h b/sources/shiboken2/tests/libsmart/smart.h new file mode 100644 index 000000000..c6b0dbbca --- /dev/null +++ b/sources/shiboken2/tests/libsmart/smart.h @@ -0,0 +1,210 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the test suite of PySide2. +** +** $QT_BEGIN_LICENSE:GPL-EXCEPT$ +** 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 General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3 as published by the Free Software +** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT +** 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-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef SMART_H +#define SMART_H + +#include <algorithm> +#include <iostream> +#include <vector> + +#include "libsmartmacros.h" + +// Forward declarations. +template <class T> +class SharedPtr; +class Integer; +class Obj; + +LIB_SMART_API bool shouldPrint(); + +// Used to track which C++ objects are alive. +class LIB_SMART_API Registry { +public: + static Registry *getInstance(); + + void add(Obj *p); + void add(Integer *p); + void remove(Obj *p); + void remove(Integer *p); + int countObjects() const; + int countIntegers() const; + bool shouldPrint() const; + void setShouldPrint(bool flag); + +protected: + Registry(); + +private: + bool m_printStuff; + std::vector<Obj *> m_objects; + std::vector<Integer *> m_integers; +}; + +template <class T> +class RefData { +public: + RefData(T *ptr) : m_refCount(1), m_heldPtr(ptr) {} + ~RefData() { delete m_heldPtr; } + int inc() { return ++m_refCount; } + int dec() { return --m_refCount; } + int useCount() { return m_refCount; } + int m_refCount; + T *m_heldPtr; +}; + +template <class T> +class SharedPtr { +public: + SharedPtr() : m_refData(0) { + if (shouldPrint()) + std::cout << "shared_ptr default constructor " << this << "\n"; + } + + SharedPtr(T *v) + { + if (shouldPrint()) + std::cout << "shared_ptr constructor " << this << " with pointer " << v << "\n"; + if (v) + m_refData = new RefData<T>(v); + } + + SharedPtr(const SharedPtr<T> &other) : m_refData(other.m_refData) + { + if (shouldPrint()) + std::cout << "shared_ptr copy constructor " << this << " with pointer " + << other.m_refData << "\n"; + if (m_refData) + m_refData->inc(); + } + + SharedPtr<T> &operator=(const SharedPtr<T>& other) + { + if (this != &other) { + if (shouldPrint()) + std::cout << "shared_ptr assignment operator " << this << " with pointer " + << other.m_refData << "\n"; + if (m_refData && m_refData->dec() == 0) + delete m_refData; + m_refData = other.m_refData; + if (m_refData) + m_refData->inc(); + } + return *this; + } + + T *data() const + { + if (m_refData) + return m_refData->m_heldPtr; + return 0; + } + + int useCount() const + { + if (m_refData) + return m_refData->useCount(); + return 0; + } + + void dummyMethod1() + { + + } + + T& operator*() const + { + // Crashes if smart pointer is empty (just like std::shared_ptr). + return *(m_refData->m_heldPtr); + } + + T *operator->() const + { + if (m_refData) + return m_refData->m_heldPtr; + return 0; + } + + bool operator!() const + { + return !m_refData || !m_refData->m_heldPtr; + } + + bool isNull() const + { + return !m_refData || !m_refData->m_heldPtr; + } + + operator bool() const + { + return m_refData && m_refData->m_heldPtr; + } + + ~SharedPtr() + { + if (m_refData) { + if (shouldPrint()) + std::cout << "shared_ptr destructor " << this << " remaining refcount " + << m_refData->useCount() - 1 << "\n"; + } + if (m_refData && m_refData->dec() == 0) + delete m_refData; + } + + RefData<T> *m_refData; +}; + +class LIB_SMART_API Integer { +public: + Integer(); + Integer(const Integer &other); + Integer &operator=(const Integer &other); + ~Integer(); + void printInteger(); + int m_int; +}; + +// Couldn't name it Object because it caused some namespace clashes. +class LIB_SMART_API Obj { +public: + Obj(); + virtual ~Obj(); + + void printObj(); + Integer takeInteger(Integer val); + SharedPtr<Obj> giveSharedPtrToObj(); + SharedPtr<Integer> giveSharedPtrToInteger(); + int takeSharedPtrToObj(SharedPtr<Obj> pObj); + int takeSharedPtrToInteger(SharedPtr<Integer> pInt); + + int m_integer; + Integer *m_internalInteger; +}; + +#endif // SMART_H + |