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/*
* This file is part of the Shiboken Python Bindings Generator project.
*
* Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
*
* Contact: PySide team <contact@pyside.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#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
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