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/*
* This file is part of the Shiboken Python Bindings Generator project.
*
* Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
*
* Contact: PySide team <contact@pyside.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation. Please
* review the following information to ensure the GNU Lesser General
* Public License version 2.1 requirements will be met:
* http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
*
* As a special exception to the GNU Lesser General Public License
* version 2.1, the object code form of a "work that uses the Library"
* may incorporate material from a header file that is part of the
* Library. You may distribute such object code under terms of your
* choice, provided that the incorporated material (i) does not exceed
* more than 5% of the total size of the Library; and (ii) is limited to
* numerical parameters, data structure layouts, accessors, macros,
* inline functions and templates.
*
* This program 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 program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include "basewrapper.h"
#include "bindingmanager.h"
#include "google/dense_hash_map"
namespace Shiboken
{
typedef google::dense_hash_map<const void*, PyObject*> WrapperMap;
struct BindingManager::BindingManagerPrivate {
WrapperMap wrapperMapper;
void releaseWrapper(void* cptr);
};
void BindingManager::BindingManagerPrivate::releaseWrapper(void* cptr)
{
WrapperMap::iterator iter = wrapperMapper.find(cptr);
if (iter != wrapperMapper.end())
wrapperMapper.erase(iter);
}
BindingManager::BindingManager()
{
m_d = new BindingManager::BindingManagerPrivate;
m_d->wrapperMapper.set_empty_key((WrapperMap::key_type)0);
m_d->wrapperMapper.set_deleted_key((WrapperMap::key_type)1);
}
BindingManager::~BindingManager()
{
delete m_d;
}
BindingManager& BindingManager::instance() {
static BindingManager singleton;
return singleton;
}
bool BindingManager::hasWrapper(const void* cptr)
{
return m_d->wrapperMapper.count(cptr);
}
void BindingManager::assignWrapper(PyObject* wrapper, const void* cptr)
{
WrapperMap::iterator iter = m_d->wrapperMapper.find(cptr);
if (iter == m_d->wrapperMapper.end())
m_d->wrapperMapper.insert(std::make_pair(cptr, wrapper));
else
iter->second = wrapper;
}
void BindingManager::releaseWrapper(PyObject* wrapper)
{
void* cptr = PyBaseWrapper_cptr(wrapper);
m_d->releaseWrapper(cptr);
if (((ShiboTypeObject*) wrapper->ob_type)->mi_offsets) {
int* offset = ((ShiboTypeObject*) wrapper->ob_type)->mi_offsets;
while (*offset != -1) {
if (*offset > 0)
m_d->releaseWrapper((void*) ((size_t) cptr + (*offset)));
offset++;
}
}
}
PyObject* BindingManager::retrieveWrapper(const void* cptr)
{
WrapperMap::iterator iter = m_d->wrapperMapper.find(cptr);
if (iter == m_d->wrapperMapper.end())
return 0;
return iter->second;
}
PyObject* BindingManager::getOverride(const void* cptr, const char* methodName)
{
PyObject* wrapper = retrieveWrapper(cptr);
if (wrapper) {
PyTypeObject* baseWrapperType = (PyTypeObject*) ((Shiboken::PyBaseWrapper*)wrapper)->baseWrapperType;
PyObject* method = PyObject_GetAttrString(wrapper, const_cast<char*>(methodName));
if (method) {
PyObject* defaultMethod = 0;
if (PyMethod_Check(method) &&
((PyMethodObject*) method)->im_self == wrapper &&
baseWrapperType->tp_dict != 0) {
defaultMethod = PyDict_GetItemString(baseWrapperType->tp_dict, const_cast<char*>(methodName));
}
if (defaultMethod && ((PyMethodObject*)method)->im_func != defaultMethod)
return method;
Py_DECREF(method);
}
}
return 0;
}
void BindingManager::invalidateWrapper(PyObject* wrapper)
{
PyBaseWrapper_setValidCppObject(wrapper, false);
releaseWrapper(wrapper);
}
} // namespace Shiboken
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