187 lines
8.5 KiB
C++
187 lines
8.5 KiB
C++
/***************************************************************************
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* Copyright (c) 2013 Werner Mayer <wmayer[at]users.sourceforge.net> *
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* *
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* This file is part of the FreeCAD CAx development system. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Library General Public *
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* License as published by the Free Software Foundation; either *
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* version 2 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU Library General Public License for more details. *
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* *
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* You should have received a copy of the GNU Library General Public *
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* License along with this library; see the file COPYING.LIB. If not, *
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* write to the Free Software Foundation, Inc., 59 Temple Place, *
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* Suite 330, Boston, MA 02111-1307, USA *
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* *
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***************************************************************************/
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namespace App
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{
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/// Type structure of FeaturePythonPyT
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template<class FeaturePyT>
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PyTypeObject FeaturePythonPyT<FeaturePyT>::Type = {
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PyObject_HEAD_INIT(&PyType_Type)
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0, /*ob_size*/
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"FeaturePython", /*tp_name*/
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sizeof(FeaturePythonPyT), /*tp_basicsize*/
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0, /*tp_itemsize*/
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/* methods */
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FeaturePyT::PyDestructor, /*tp_dealloc*/
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0, /*tp_print*/
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FeaturePyT::__getattr, /*tp_getattr*/
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__setattr, /*tp_setattr*/
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0, /*tp_compare*/
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0, /*tp_repr*/
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0, /*tp_as_number*/
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0, /*tp_as_sequence*/
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0, /*tp_as_mapping*/
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0, /*tp_hash*/
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0, /*tp_call */
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0, /*tp_str */
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0, /*tp_getattro*/
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0, /*tp_setattro*/
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/* --- Functions to access object as input/output buffer ---------*/
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0, /* tp_as_buffer */
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/* --- Flags to define presence of optional/expanded features */
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Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_CLASS, /*tp_flags */
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"This is the father of all Feature classes", /*tp_doc */
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0, /*tp_traverse */
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0, /*tp_clear */
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0, /*tp_richcompare */
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0, /*tp_weaklistoffset */
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0, /*tp_iter */
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0, /*tp_iternext */
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0, /*tp_methods */
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0, /*tp_members */
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0, /*tp_getset */
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&FeaturePyT::Type, /*tp_base */
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0, /*tp_dict */
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0, /*tp_descr_get */
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0, /*tp_descr_set */
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0, /*tp_dictoffset */
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FeaturePyT::__PyInit, /*tp_init */
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0, /*tp_alloc */
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0, /*tp_new */
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0, /*tp_free Low-level free-memory routine */
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0, /*tp_is_gc For PyObject_IS_GC */
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0, /*tp_bases */
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0, /*tp_mro method resolution order */
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0, /*tp_cache */
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0, /*tp_subclasses */
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0, /*tp_weaklist */
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0, /*tp_del */
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0 /*tp_version_tag */
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};
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template<class FeaturePyT>
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FeaturePythonPyT<FeaturePyT>::FeaturePythonPyT(PropertyContainer *pcObject, PyTypeObject *T)
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: FeaturePyT(reinterpret_cast<typename FeaturePyT::PointerType>(pcObject), T)
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{
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}
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template<class FeaturePyT>
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FeaturePythonPyT<FeaturePyT>::~FeaturePythonPyT()
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{
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}
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template<class FeaturePyT>
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int FeaturePythonPyT<FeaturePyT>::__setattr(PyObject *obj, char *attr, PyObject *value)
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{
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// This overwrites PyObjectBase::__setattr because this actively disallows to delete an attribute
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//
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if (!static_cast<Base::PyObjectBase*>(obj)->isValid()){
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PyErr_Format(PyExc_ReferenceError, "Cannot access attribute '%s' of deleted object", attr);
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return -1;
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}
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int ret = static_cast<Base::PyObjectBase*>(obj)->_setattr(attr, value);
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if (ret == 0) {
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static_cast<Base::PyObjectBase*>(obj)->startNotify();
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}
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return ret;
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}
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template<class FeaturePyT>
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int FeaturePythonPyT<FeaturePyT>::_setattr(char *attr, PyObject *value)
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{
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int returnValue = FeaturePyT::_setattr(attr, value);
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if (returnValue == -1) {
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if (value) {
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if (PyFunction_Check(value)) {
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std::map<std::string, PyObject*>::iterator it = dyn_methods.find(attr);
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if (it != dyn_methods.end()) {
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Py_XDECREF(it->second);
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}
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dyn_methods[attr] = PyMethod_New(value, this, 0);
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returnValue = 0;
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PyErr_Clear();
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}
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}
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else {
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// delete
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std::map<std::string, PyObject*>::iterator it = dyn_methods.find(attr);
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if (it != dyn_methods.end()) {
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Py_XDECREF(it->second);
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dyn_methods.erase(it);
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returnValue = 0;
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PyErr_Clear();
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}
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}
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}
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return returnValue;
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}
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template<class FeaturePyT>
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PyObject *FeaturePythonPyT<FeaturePyT>::_getattr(char *attr)
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{
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// See CallTipsList::extractTips
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if (Base::streq(attr, "__fc_template__")) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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if (Base::streq(attr, "__dict__")) {
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// Return the default dict
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PyTypeObject *tp = this->ob_type;
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// register type if needed
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if (tp->tp_dict == NULL) {
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if (PyType_Ready(tp) < 0)
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return 0;
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}
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PyObject* dict = PyDict_Copy(tp->tp_dict);
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std::map<std::string,App::Property*> Map;
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FeaturePyT::getPropertyContainerPtr()->getPropertyMap(Map);
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for (std::map<std::string,App::Property*>::iterator it = Map.begin(); it != Map.end(); ++it)
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PyDict_SetItem(dict, PyString_FromString(it->first.c_str()), PyString_FromString(""));
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for (std::map<std::string, PyObject*>::const_iterator it = dyn_methods.begin(); it != dyn_methods.end(); ++it)
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PyDict_SetItem(dict, PyString_FromString(it->first.c_str()), PyString_FromString(""));
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if (PyErr_Occurred()) {
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Py_DECREF(dict);
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dict = 0;
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}
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return dict;
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}
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PyObject *rvalue = NULL;
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std::map<std::string, PyObject*>::iterator it = dyn_methods.find(attr);
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if (it != dyn_methods.end()) {
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Py_INCREF(it->second);
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rvalue = it->second;
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PyErr_Clear();
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return rvalue;
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}
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PyErr_Clear();
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return FeaturePyT::_getattr(attr);
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}
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} //namespace App
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