diff options
Diffstat (limited to 'sources/shiboken6/libshiboken/tmp-referencetopython/sbkconverter.cpp')
-rw-r--r-- | sources/shiboken6/libshiboken/tmp-referencetopython/sbkconverter.cpp | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/sources/shiboken6/libshiboken/tmp-referencetopython/sbkconverter.cpp b/sources/shiboken6/libshiboken/tmp-referencetopython/sbkconverter.cpp new file mode 100644 index 000000000..ab205e215 --- /dev/null +++ b/sources/shiboken6/libshiboken/tmp-referencetopython/sbkconverter.cpp @@ -0,0 +1,216 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of Qt for Python. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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(reinterpret_cast<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); + *reinterpret_cast<void **>(cppOut) = nullptr; +} + +void pythonToCppPointer(SbkObjectType *type, PyObject *pyIn, void *cppOut) +{ + assert(pyIn); + assert(cppOut); + SbkObjectType *inType = (SbkObjectType *)Py_TYPE(pyIn); + if (ObjectType::hasCast(inType)) { + *reinterpret_cast<void **>(cppOut) = + ObjectType::cast(inType, reinterpret_cast<SbkObject *>(pyIn), reinterpret_cast<PyTypeObject *>(type)); + } else { + *reinterpret_cast<void **>(cppOut) = + Object::cppPointer(reinterpret_cast<SbkObject *>(pyIn), reinterpret_cast<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 |