forked from bartvdbraak/blender
d573e9c539
Added the method into the PyType so python knows about the methods (its supposed to work this way). This means in the future the api can use PyType_Ready() to store the methods in the types dictionary. Python3 removes Py_FindMethod and we should not be using it anyway since its not that efficient.
761 lines
20 KiB
C++
761 lines
20 KiB
C++
/**
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* $Id$
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#ifndef NO_EXP_PYTHON_EMBEDDING
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/*------------------------------
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* PyObjectPlus cpp
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*
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* C++ library routines for Crawl 3.2
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*
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* Derived from work by
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* David Redish
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* graduate student
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* Computer Science Department
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* Carnegie Mellon University (CMU)
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* Center for the Neural Basis of Cognition (CNBC)
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* http://www.python.org/doc/PyCPP.html
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*
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------------------------------*/
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#include <MT_assert.h>
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#include "stdlib.h"
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#include "PyObjectPlus.h"
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#include "STR_String.h"
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/*------------------------------
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* PyObjectPlus Type -- Every class, even the abstract one should have a Type
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------------------------------*/
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PyTypeObject PyObjectPlus::Type = {
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PyObject_HEAD_INIT(&PyType_Type)
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0, /*ob_size*/
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"PyObjectPlus", /*tp_name*/
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sizeof(PyObjectPlus), /*tp_basicsize*/
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0, /*tp_itemsize*/
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/* methods */
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PyDestructor, /*tp_dealloc*/
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0, /*tp_print*/
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__getattr, /*tp_getattr*/
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__setattr, /*tp_setattr*/
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0, /*tp_compare*/
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__repr,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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Methods
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};
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PyObjectPlus::~PyObjectPlus()
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{
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if (ob_refcnt)
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{
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_Py_ForgetReference(this);
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}
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// assert(ob_refcnt==0);
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}
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PyObjectPlus::PyObjectPlus(PyTypeObject *T) // constructor
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{
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MT_assert(T != NULL);
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this->ob_type = T;
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_Py_NewReference(this);
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};
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/*------------------------------
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* PyObjectPlus Methods -- Every class, even the abstract one should have a Methods
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------------------------------*/
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PyMethodDef PyObjectPlus::Methods[] = {
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{"isA", (PyCFunction) sPy_isA, METH_O},
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{NULL, NULL} /* Sentinel */
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};
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/*------------------------------
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* PyObjectPlus Parents -- Every class, even the abstract one should have parents
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------------------------------*/
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PyParentObject PyObjectPlus::Parents[] = {&PyObjectPlus::Type, NULL};
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/*------------------------------
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* PyObjectPlus attributes -- attributes
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------------------------------*/
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PyObject *PyObjectPlus::_getattr(const char *attr)
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{
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if (!strcmp(attr, "__doc__") && GetType()->tp_doc)
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return PyString_FromString(GetType()->tp_doc);
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//if (streq(attr, "type"))
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// return Py_BuildValue("s", (*(GetParents()))->tp_name);
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return Py_FindMethod(Methods, this, attr);
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}
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int PyObjectPlus::_delattr(const char *attr)
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{
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PyErr_SetString(PyExc_AttributeError, "attribute cant be deleted");
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return 1;
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}
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int PyObjectPlus::_setattr(const char *attr, PyObject *value)
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{
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//return PyObject::_setattr(attr,value);
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//cerr << "Unknown attribute" << endl;
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PyErr_SetString(PyExc_AttributeError, "attribute cant be set");
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return 1;
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}
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PyObject *PyObjectPlus::_getattr_self(const PyAttributeDef attrlist[], void *self, const char *attr)
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{
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const PyAttributeDef *attrdef;
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for (attrdef=attrlist; attrdef->m_name != NULL; attrdef++)
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{
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if (!strcmp(attr, attrdef->m_name))
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{
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if (attrdef->m_type == KX_PYATTRIBUTE_TYPE_DUMMY)
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{
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// fake attribute, ignore
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return NULL;
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}
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if (attrdef->m_type == KX_PYATTRIBUTE_TYPE_FUNCTION)
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{
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// the attribute has no field correspondance, handover processing to function.
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if (attrdef->m_getFunction == NULL)
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return NULL;
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return (*attrdef->m_getFunction)(self, attrdef);
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}
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char *ptr = reinterpret_cast<char*>(self)+attrdef->m_offset;
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if (attrdef->m_length > 1)
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{
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PyObject* resultlist = PyList_New(attrdef->m_length);
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for (unsigned int i=0; i<attrdef->m_length; i++)
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{
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switch (attrdef->m_type) {
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case KX_PYATTRIBUTE_TYPE_BOOL:
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{
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bool *val = reinterpret_cast<bool*>(ptr);
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ptr += sizeof(bool);
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PyList_SetItem(resultlist,i,PyInt_FromLong(*val));
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break;
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}
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case KX_PYATTRIBUTE_TYPE_SHORT:
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{
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short int *val = reinterpret_cast<short int*>(ptr);
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ptr += sizeof(short int);
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PyList_SetItem(resultlist,i,PyInt_FromLong(*val));
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break;
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}
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case KX_PYATTRIBUTE_TYPE_ENUM:
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// enum are like int, just make sure the field size is the same
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if (sizeof(int) != attrdef->m_size)
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{
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Py_DECREF(resultlist);
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return NULL;
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}
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// walkthrough
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case KX_PYATTRIBUTE_TYPE_INT:
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{
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int *val = reinterpret_cast<int*>(ptr);
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ptr += sizeof(int);
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PyList_SetItem(resultlist,i,PyInt_FromLong(*val));
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break;
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}
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case KX_PYATTRIBUTE_TYPE_FLOAT:
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{
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float *val = reinterpret_cast<float*>(ptr);
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ptr += sizeof(float);
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PyList_SetItem(resultlist,i,PyFloat_FromDouble(*val));
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break;
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}
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default:
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// no support for array of complex data
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Py_DECREF(resultlist);
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return NULL;
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}
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}
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return resultlist;
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}
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else
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{
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switch (attrdef->m_type) {
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case KX_PYATTRIBUTE_TYPE_BOOL:
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{
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bool *val = reinterpret_cast<bool*>(ptr);
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return PyInt_FromLong(*val);
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}
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case KX_PYATTRIBUTE_TYPE_SHORT:
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{
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short int *val = reinterpret_cast<short int*>(ptr);
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return PyInt_FromLong(*val);
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}
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case KX_PYATTRIBUTE_TYPE_ENUM:
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// enum are like int, just make sure the field size is the same
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if (sizeof(int) != attrdef->m_size)
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{
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return NULL;
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}
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// walkthrough
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case KX_PYATTRIBUTE_TYPE_INT:
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{
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int *val = reinterpret_cast<int*>(ptr);
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return PyInt_FromLong(*val);
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}
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case KX_PYATTRIBUTE_TYPE_FLOAT:
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{
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float *val = reinterpret_cast<float*>(ptr);
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return PyFloat_FromDouble(*val);
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}
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case KX_PYATTRIBUTE_TYPE_STRING:
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{
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STR_String *val = reinterpret_cast<STR_String*>(ptr);
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return PyString_FromString(*val);
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}
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default:
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return NULL;
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}
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}
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}
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}
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return NULL;
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}
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int PyObjectPlus::_setattr_self(const PyAttributeDef attrlist[], void *self, const char *attr, PyObject *value)
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{
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const PyAttributeDef *attrdef;
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void *undoBuffer = NULL;
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void *sourceBuffer = NULL;
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size_t bufferSize = 0;
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for (attrdef=attrlist; attrdef->m_name != NULL; attrdef++)
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{
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if (!strcmp(attr, attrdef->m_name))
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{
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if (attrdef->m_access == KX_PYATTRIBUTE_RO ||
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attrdef->m_type == KX_PYATTRIBUTE_TYPE_DUMMY)
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{
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PyErr_SetString(PyExc_AttributeError, "property is read-only");
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return 1;
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}
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char *ptr = reinterpret_cast<char*>(self)+attrdef->m_offset;
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if (attrdef->m_length > 1)
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{
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if (!PySequence_Check(value))
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{
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PyErr_SetString(PyExc_TypeError, "expected a sequence");
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return 1;
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}
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if (PySequence_Size(value) != attrdef->m_length)
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{
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PyErr_SetString(PyExc_TypeError, "incorrect number of elements in sequence");
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return 1;
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}
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switch (attrdef->m_type)
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{
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case KX_PYATTRIBUTE_TYPE_FUNCTION:
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if (attrdef->m_setFunction == NULL)
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{
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PyErr_SetString(PyExc_AttributeError, "function attribute without function, report to blender.org");
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return 1;
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}
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return (*attrdef->m_setFunction)(self, attrdef, value);
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case KX_PYATTRIBUTE_TYPE_BOOL:
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bufferSize = sizeof(bool);
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break;
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case KX_PYATTRIBUTE_TYPE_SHORT:
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bufferSize = sizeof(short int);
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break;
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case KX_PYATTRIBUTE_TYPE_ENUM:
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case KX_PYATTRIBUTE_TYPE_INT:
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bufferSize = sizeof(int);
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break;
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case KX_PYATTRIBUTE_TYPE_FLOAT:
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bufferSize = sizeof(float);
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break;
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default:
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// should not happen
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PyErr_SetString(PyExc_AttributeError, "Unsupported attribute type, report to blender.org");
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return 1;
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}
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// let's implement a smart undo method
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bufferSize *= attrdef->m_length;
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undoBuffer = malloc(bufferSize);
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sourceBuffer = ptr;
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if (undoBuffer)
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{
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memcpy(undoBuffer, sourceBuffer, bufferSize);
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}
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for (int i=0; i<attrdef->m_length; i++)
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{
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PyObject *item = PySequence_GetItem(value, i); /* new ref */
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// we can decrement the reference immediately, the reference count
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// is at least 1 because the item is part of an array
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Py_DECREF(item);
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switch (attrdef->m_type)
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{
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case KX_PYATTRIBUTE_TYPE_BOOL:
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{
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bool *var = reinterpret_cast<bool*>(ptr);
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ptr += sizeof(bool);
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if (PyInt_Check(item))
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{
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*var = (PyInt_AsLong(item) != 0);
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}
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else if (PyBool_Check(item))
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{
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*var = (item == Py_True);
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}
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else
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{
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PyErr_SetString(PyExc_TypeError, "expected an integer or a bool");
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goto UNDO_AND_ERROR;
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}
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break;
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}
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case KX_PYATTRIBUTE_TYPE_SHORT:
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{
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short int *var = reinterpret_cast<short int*>(ptr);
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ptr += sizeof(short int);
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if (PyInt_Check(item))
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{
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long val = PyInt_AsLong(item);
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if (attrdef->m_clamp)
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{
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if (val < attrdef->m_imin)
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val = attrdef->m_imin;
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else if (val > attrdef->m_imax)
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val = attrdef->m_imax;
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}
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else if (val < attrdef->m_imin || val > attrdef->m_imax)
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{
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PyErr_SetString(PyExc_ValueError, "item value out of range");
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goto UNDO_AND_ERROR;
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}
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*var = (short int)val;
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}
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else
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{
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PyErr_SetString(PyExc_TypeError, "expected an integer");
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goto UNDO_AND_ERROR;
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}
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break;
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}
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case KX_PYATTRIBUTE_TYPE_ENUM:
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// enum are equivalent to int, just make sure that the field size matches:
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if (sizeof(int) != attrdef->m_size)
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{
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PyErr_SetString(PyExc_AttributeError, "attribute size check error, report to blender.org");
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goto UNDO_AND_ERROR;
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}
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// walkthrough
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case KX_PYATTRIBUTE_TYPE_INT:
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{
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int *var = reinterpret_cast<int*>(ptr);
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ptr += sizeof(int);
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if (PyInt_Check(item))
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{
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long val = PyInt_AsLong(item);
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if (attrdef->m_clamp)
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{
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if (val < attrdef->m_imin)
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val = attrdef->m_imin;
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else if (val > attrdef->m_imax)
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val = attrdef->m_imax;
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}
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else if (val < attrdef->m_imin || val > attrdef->m_imax)
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{
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PyErr_SetString(PyExc_ValueError, "item value out of range");
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goto UNDO_AND_ERROR;
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}
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*var = (int)val;
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}
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else
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{
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PyErr_SetString(PyExc_TypeError, "expected an integer");
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goto UNDO_AND_ERROR;
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}
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break;
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}
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case KX_PYATTRIBUTE_TYPE_FLOAT:
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{
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float *var = reinterpret_cast<float*>(ptr);
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ptr += sizeof(float);
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double val = PyFloat_AsDouble(item);
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if (val == -1.0 && PyErr_Occurred())
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{
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PyErr_SetString(PyExc_TypeError, "expected a float");
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goto UNDO_AND_ERROR;
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}
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else if (attrdef->m_clamp)
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{
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if (val < attrdef->m_fmin)
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val = attrdef->m_fmin;
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else if (val > attrdef->m_fmax)
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val = attrdef->m_fmax;
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}
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else if (val < attrdef->m_fmin || val > attrdef->m_fmax)
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{
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PyErr_SetString(PyExc_ValueError, "item value out of range");
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goto UNDO_AND_ERROR;
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}
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*var = (float)val;
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break;
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}
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default:
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// should not happen
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PyErr_SetString(PyExc_AttributeError, "attribute type check error, report to blender.org");
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goto UNDO_AND_ERROR;
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}
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}
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// no error, call check function if any
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if (attrdef->m_checkFunction != NULL)
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{
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if ((*attrdef->m_checkFunction)(self, attrdef) != 0)
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{
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// post check returned an error, restore values
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UNDO_AND_ERROR:
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if (undoBuffer)
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{
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memcpy(sourceBuffer, undoBuffer, bufferSize);
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free(undoBuffer);
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|
}
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return 1;
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}
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}
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if (undoBuffer)
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free(undoBuffer);
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return 0;
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}
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else // simple attribute value
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|
{
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if (attrdef->m_type == KX_PYATTRIBUTE_TYPE_FUNCTION)
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{
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|
if (attrdef->m_setFunction == NULL)
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|
{
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PyErr_SetString(PyExc_AttributeError, "function attribute without function, report to blender.org");
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return 1;
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|
}
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return (*attrdef->m_setFunction)(self, attrdef, value);
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}
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if (attrdef->m_checkFunction != NULL)
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{
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// post check function is provided, prepare undo buffer
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sourceBuffer = ptr;
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switch (attrdef->m_type)
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{
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case KX_PYATTRIBUTE_TYPE_BOOL:
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bufferSize = sizeof(bool);
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|
break;
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|
case KX_PYATTRIBUTE_TYPE_SHORT:
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|
bufferSize = sizeof(short);
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break;
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case KX_PYATTRIBUTE_TYPE_ENUM:
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case KX_PYATTRIBUTE_TYPE_INT:
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bufferSize = sizeof(int);
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break;
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|
case KX_PYATTRIBUTE_TYPE_FLOAT:
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bufferSize = sizeof(float);
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break;
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|
case KX_PYATTRIBUTE_TYPE_STRING:
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sourceBuffer = reinterpret_cast<STR_String*>(ptr)->Ptr();
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if (sourceBuffer)
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bufferSize = strlen(reinterpret_cast<char*>(sourceBuffer))+1;
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break;
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|
default:
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PyErr_SetString(PyExc_AttributeError, "unknown attribute type, report to blender.org");
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return 1;
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}
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if (bufferSize)
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{
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undoBuffer = malloc(bufferSize);
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|
if (undoBuffer)
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{
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memcpy(undoBuffer, sourceBuffer, bufferSize);
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}
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}
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}
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switch (attrdef->m_type)
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{
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case KX_PYATTRIBUTE_TYPE_BOOL:
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{
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bool *var = reinterpret_cast<bool*>(ptr);
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if (PyInt_Check(value))
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{
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*var = (PyInt_AsLong(value) != 0);
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}
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else if (PyBool_Check(value))
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{
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*var = (value == Py_True);
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}
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else
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{
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PyErr_SetString(PyExc_TypeError, "expected an integer or a bool");
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goto FREE_AND_ERROR;
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}
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break;
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}
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case KX_PYATTRIBUTE_TYPE_SHORT:
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|
{
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short int *var = reinterpret_cast<short int*>(ptr);
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|
if (PyInt_Check(value))
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|
{
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|
long val = PyInt_AsLong(value);
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|
if (attrdef->m_clamp)
|
|
{
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if (val < attrdef->m_imin)
|
|
val = attrdef->m_imin;
|
|
else if (val > attrdef->m_imax)
|
|
val = attrdef->m_imax;
|
|
}
|
|
else if (val < attrdef->m_imin || val > attrdef->m_imax)
|
|
{
|
|
PyErr_SetString(PyExc_ValueError, "value out of range");
|
|
goto FREE_AND_ERROR;
|
|
}
|
|
*var = (short int)val;
|
|
}
|
|
else
|
|
{
|
|
PyErr_SetString(PyExc_TypeError, "expected an integer");
|
|
goto FREE_AND_ERROR;
|
|
}
|
|
break;
|
|
}
|
|
case KX_PYATTRIBUTE_TYPE_ENUM:
|
|
// enum are equivalent to int, just make sure that the field size matches:
|
|
if (sizeof(int) != attrdef->m_size)
|
|
{
|
|
PyErr_SetString(PyExc_AttributeError, "attribute size check error, report to blender.org");
|
|
goto FREE_AND_ERROR;
|
|
}
|
|
// walkthrough
|
|
case KX_PYATTRIBUTE_TYPE_INT:
|
|
{
|
|
int *var = reinterpret_cast<int*>(ptr);
|
|
if (PyInt_Check(value))
|
|
{
|
|
long val = PyInt_AsLong(value);
|
|
if (attrdef->m_clamp)
|
|
{
|
|
if (val < attrdef->m_imin)
|
|
val = attrdef->m_imin;
|
|
else if (val > attrdef->m_imax)
|
|
val = attrdef->m_imax;
|
|
}
|
|
else if (val < attrdef->m_imin || val > attrdef->m_imax)
|
|
{
|
|
PyErr_SetString(PyExc_ValueError, "value out of range");
|
|
goto FREE_AND_ERROR;
|
|
}
|
|
*var = (int)val;
|
|
}
|
|
else
|
|
{
|
|
PyErr_SetString(PyExc_TypeError, "expected an integer");
|
|
goto FREE_AND_ERROR;
|
|
}
|
|
break;
|
|
}
|
|
case KX_PYATTRIBUTE_TYPE_FLOAT:
|
|
{
|
|
float *var = reinterpret_cast<float*>(ptr);
|
|
double val = PyFloat_AsDouble(value);
|
|
if (val == -1.0 && PyErr_Occurred())
|
|
{
|
|
PyErr_SetString(PyExc_TypeError, "expected a float");
|
|
goto FREE_AND_ERROR;
|
|
}
|
|
else if (attrdef->m_clamp)
|
|
{
|
|
if (val < attrdef->m_fmin)
|
|
val = attrdef->m_fmin;
|
|
else if (val > attrdef->m_fmax)
|
|
val = attrdef->m_fmax;
|
|
}
|
|
else if (val < attrdef->m_fmin || val > attrdef->m_fmax)
|
|
{
|
|
PyErr_SetString(PyExc_ValueError, "value out of range");
|
|
goto FREE_AND_ERROR;
|
|
}
|
|
*var = (float)val;
|
|
break;
|
|
}
|
|
case KX_PYATTRIBUTE_TYPE_STRING:
|
|
{
|
|
STR_String *var = reinterpret_cast<STR_String*>(ptr);
|
|
if (PyString_Check(value))
|
|
{
|
|
char *val = PyString_AsString(value);
|
|
if (attrdef->m_clamp)
|
|
{
|
|
if (strlen(val) < attrdef->m_imin)
|
|
{
|
|
// can't increase the length of the string
|
|
PyErr_SetString(PyExc_ValueError, "string length too short");
|
|
goto FREE_AND_ERROR;
|
|
}
|
|
else if (strlen(val) > attrdef->m_imax)
|
|
{
|
|
// trim the string
|
|
char c = val[attrdef->m_imax];
|
|
val[attrdef->m_imax] = 0;
|
|
*var = val;
|
|
val[attrdef->m_imax] = c;
|
|
break;
|
|
}
|
|
} else if (strlen(val) < attrdef->m_imin || strlen(val) > attrdef->m_imax)
|
|
{
|
|
PyErr_SetString(PyExc_ValueError, "string length out of range");
|
|
goto FREE_AND_ERROR;
|
|
}
|
|
*var = val;
|
|
}
|
|
else
|
|
{
|
|
PyErr_SetString(PyExc_TypeError, "expected a string");
|
|
goto FREE_AND_ERROR;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
// should not happen
|
|
PyErr_SetString(PyExc_AttributeError, "unknown attribute type, report to blender.org");
|
|
goto FREE_AND_ERROR;
|
|
}
|
|
}
|
|
// check if post processing is needed
|
|
if (attrdef->m_checkFunction != NULL)
|
|
{
|
|
if ((*attrdef->m_checkFunction)(self, attrdef) != 0)
|
|
{
|
|
// restore value
|
|
RESTORE_AND_ERROR:
|
|
if (undoBuffer)
|
|
{
|
|
if (attrdef->m_type == KX_PYATTRIBUTE_TYPE_STRING)
|
|
{
|
|
// special case for STR_String: restore the string
|
|
STR_String *var = reinterpret_cast<STR_String*>(ptr);
|
|
*var = reinterpret_cast<char*>(undoBuffer);
|
|
}
|
|
else
|
|
{
|
|
// other field type have direct values
|
|
memcpy(ptr, undoBuffer, bufferSize);
|
|
}
|
|
}
|
|
FREE_AND_ERROR:
|
|
if (undoBuffer)
|
|
free(undoBuffer);
|
|
return 1;
|
|
}
|
|
}
|
|
if (undoBuffer)
|
|
free(undoBuffer);
|
|
return 0;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/*------------------------------
|
|
* PyObjectPlus repr -- representations
|
|
------------------------------*/
|
|
PyObject *PyObjectPlus::_repr(void)
|
|
{
|
|
PyErr_SetString(PyExc_SystemError, "Representation not overridden by object.");
|
|
return NULL;
|
|
}
|
|
|
|
/*------------------------------
|
|
* PyObjectPlus isA -- the isA functions
|
|
------------------------------*/
|
|
bool PyObjectPlus::isA(PyTypeObject *T) // if called with a Type, use "typename"
|
|
{
|
|
return isA(T->tp_name);
|
|
}
|
|
|
|
|
|
bool PyObjectPlus::isA(const char *mytypename) // check typename of each parent
|
|
{
|
|
int i;
|
|
PyParentObject P;
|
|
PyParentObject *Ps = GetParents();
|
|
|
|
for (P = Ps[i=0]; P != NULL; P = Ps[i++])
|
|
{
|
|
if (strcmp(P->tp_name, mytypename)==0)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
PyObject *PyObjectPlus::Py_isA(PyObject *value) // Python wrapper for isA
|
|
{
|
|
if (!PyString_Check(value)) {
|
|
PyErr_SetString(PyExc_TypeError, "expected a string");
|
|
return NULL;
|
|
}
|
|
if(isA(PyString_AsString(value)))
|
|
Py_RETURN_TRUE;
|
|
else
|
|
Py_RETURN_FALSE;
|
|
}
|
|
|
|
/* Utility function called by the macro _getattr_up()
|
|
* for getting ob.__dict__() values from our PyObject
|
|
* this is used by python for doing dir() on an object, so its good
|
|
* if we return a list of attributes and methods.
|
|
*
|
|
* Other then making dir() useful the value returned from __dict__() is not useful
|
|
* since every value is a Py_None
|
|
* */
|
|
PyObject *_getattr_dict(PyObject *pydict, PyMethodDef *meth, PyAttributeDef *attrdef)
|
|
{
|
|
if(pydict==NULL) { /* incase calling __dict__ on the parent of this object raised an error */
|
|
PyErr_Clear();
|
|
pydict = PyDict_New();
|
|
}
|
|
|
|
if(meth) {
|
|
for (; meth->ml_name != NULL; meth++) {
|
|
PyDict_SetItemString(pydict, meth->ml_name, Py_None);
|
|
}
|
|
}
|
|
|
|
if(attrdef) {
|
|
for (; attrdef->m_name != NULL; attrdef++) {
|
|
PyDict_SetItemString(pydict, attrdef->m_name, Py_None);
|
|
}
|
|
}
|
|
|
|
return pydict;
|
|
}
|
|
|
|
#endif //NO_EXP_PYTHON_EMBEDDING
|
|
|