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Diffstat (limited to 'sources/shiboken2/libshiboken/tmp-referencetopython/sbkconverter.cpp')
-rw-r--r-- | sources/shiboken2/libshiboken/tmp-referencetopython/sbkconverter.cpp | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/sources/shiboken2/libshiboken/tmp-referencetopython/sbkconverter.cpp b/sources/shiboken2/libshiboken/tmp-referencetopython/sbkconverter.cpp new file mode 100644 index 000000000..c3e25014e --- /dev/null +++ b/sources/shiboken2/libshiboken/tmp-referencetopython/sbkconverter.cpp @@ -0,0 +1,213 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of PySide2. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "sbkconverter.h" +#include "sbkconverter_p.h" +#include "basewrapper_p.h" + +#include "sbkdbg.h" + +namespace Shiboken { +namespace Conversions { + +static SbkConverter* createConverterObject(PyTypeObject* type, + PythonToCppFunc toCppPointerConvFunc, + IsConvertibleToCppFunc toCppPointerCheckFunc, + CppToPythonFunc pointerToPythonFunc, + CppToPythonFunc copyToPythonFunc) +{ + SbkConverter* converter = new SbkConverter; + converter->pythonType = type; + + converter->pointerToPython = pointerToPythonFunc; + converter->copyToPython = copyToPythonFunc; + + converter->toCppPointerConversion = std::make_pair(toCppPointerCheckFunc, toCppPointerConvFunc); + converter->toCppConversions.clear(); + + return converter; +} + +SbkConverter* createConverter(SbkObjectType* type, + PythonToCppFunc toCppPointerConvFunc, + IsConvertibleToCppFunc toCppPointerCheckFunc, + CppToPythonFunc pointerToPythonFunc, + CppToPythonFunc copyToPythonFunc) +{ + SbkConverter* converter = createConverterObject((PyTypeObject*)type, + toCppPointerConvFunc, toCppPointerCheckFunc, + pointerToPythonFunc, copyToPythonFunc); + type->d->converter = converter; + return converter; +} + +void deleteConverter(SbkConverter* converter) +{ + if (converter) { + converter->toCppConversions.clear(); + delete converter; + } +} + +void addPythonToCppValueConversion(SbkConverter* converter, + PythonToCppFunc pythonToCppFunc, + IsConvertibleToCppFunc isConvertibleToCppFunc) +{ + converter->toCppConversions.push_back(std::make_pair(isConvertibleToCppFunc, pythonToCppFunc)); +} +void addPythonToCppValueConversion(SbkObjectType* type, + PythonToCppFunc pythonToCppFunc, + IsConvertibleToCppFunc isConvertibleToCppFunc) +{ + addPythonToCppValueConversion(type->d->converter, pythonToCppFunc, isConvertibleToCppFunc); +} + +PyObject* pointerToPython(SbkObjectType* type, const void* cppIn) +{ + if (!cppIn) + Py_RETURN_NONE; + return type->d->converter->pointerToPython(cppIn); +} + +static inline PyObject* CopyCppToPython(SbkConverter* converter, const void* cppIn) +{ + assert(cppIn); + return converter->copyToPython(cppIn); +} +PyObject* copyToPython(SbkObjectType* type, const void* cppIn) +{ + return CopyCppToPython(type->d->converter, cppIn); +} +PyObject* toPython(SbkConverter* converter, const void* cppIn) +{ + return CopyCppToPython(converter, cppIn); +} + +PyObject* referenceToPython(SbkObjectType* type, const void* cppIn) +{ + assert(cppIn); + PyObject* pyOut = (PyObject*)BindingManager::instance().retrieveWrapper(cppIn); + if (pyOut) { + Py_INCREF(pyOut); + return pyOut; + } + // If it is Value Type, return a copy of the C++ object. + if (type->d->converter->copyToPython) + return type->d->converter->copyToPython(cppIn); + // If it is an Object Type, return a copy of the C++ object. + return type->d->converter->pointerToPython(cppIn); +} + +PythonToCppFunc isPythonToCppPointerConvertible(SbkObjectType* type, PyObject* pyIn) +{ + assert(pyIn); + return type->d->converter->toCppPointerConversion.first(pyIn); +} + +static inline PythonToCppFunc IsPythonToCppConvertible(SbkConverter* converter, PyObject* pyIn) +{ + assert(pyIn); + ToCppConversionList& convs = converter->toCppConversions; + for (ToCppConversionList::iterator conv = convs.begin(); conv != convs.end(); ++conv) { + PythonToCppFunc toCppFunc = 0; + if ((toCppFunc = (*conv).first(pyIn))) + return toCppFunc; + } + return 0; +} +PythonToCppFunc isPythonToCppValueConvertible(SbkObjectType* type, PyObject* pyIn) +{ + return IsPythonToCppConvertible(type->d->converter, pyIn); +} +PythonToCppFunc isPythonToCppConvertible(SbkConverter* converter, PyObject* pyIn) +{ + return IsPythonToCppConvertible(converter, pyIn); +} + +PythonToCppFunc isPythonToCppReferenceConvertible(SbkObjectType* type, PyObject* pyIn) +{ + if (pyIn != Py_None) { + PythonToCppFunc toCpp = isPythonToCppPointerConvertible(type, pyIn); + if (toCpp) + return toCpp; + } + return isPythonToCppValueConvertible(type, pyIn); +} + +void nonePythonToCppNullPtr(PyObject*, void* cppOut) +{ + assert(cppOut); + *((void**)cppOut) = 0; +} + +void pythonToCppPointer(SbkObjectType* type, PyObject* pyIn, void* cppOut) +{ + assert(pyIn); + assert(cppOut); + SbkObjectType* inType = (SbkObjectType*)pyIn->ob_type; + if (ObjectType::hasCast(inType)) + *((void**)cppOut) = ObjectType::cast(inType, (SbkObject*)pyIn, (PyTypeObject*)type); + else + *((void**)cppOut) = Object::cppPointer((SbkObject*)pyIn, (PyTypeObject*)type); +} + +bool isImplicitConversion(SbkObjectType* type, PythonToCppFunc toCppFunc) +{ + // This is the Object Type or Value Type conversion that only + // retrieves the C++ pointer held in the Python wrapper. + if (toCppFunc == type->d->converter->toCppPointerConversion.second) + return false; + + // Object Types doesn't have any kind of value conversion, + // only C++ pointer retrieval. + if (type->d->converter->toCppConversions.empty()) + return false; + + // The first conversion of the non-pointer conversion list is + // a Value Type's copy to C++ function, which is not an implicit + // conversion. + // Otherwise it must be one of the implicit conversions. + // Note that we don't check if the Python to C++ conversion is in + // the list of the type's conversions, for it is expected that the + // caller knows what he's doing. + ToCppConversionList::iterator conv = type->d->converter->toCppConversions.begin(); + return toCppFunc != (*conv).second; +} + +} } // namespace Shiboken::Conversions |