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/*
* $Id$
*
* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version. The Blender
* Foundation also sells licenses for use in proprietary software under
* the Blender License. See http://www.blender.org/BL/ for information
* about this.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* This is a new part of Blender.
*
* Contributor(s): Willian P. Germano
*
* ***** END GPL/BL DUAL LICENSE BLOCK *****
*/
#include "constant.h"
/* This file is heavily based on the old bpython Constant object code in
Blender */
/*****************************************************************************/
/* Python constant_Type callback function prototypes: */
/*****************************************************************************/
static void constant_dealloc( BPy_constant * cam );
static PyObject *constant_getAttr( BPy_constant * cam, char *name );
static PyObject *constant_repr( BPy_constant * cam );
static int constantLength( BPy_constant * self );
static PyObject *constantSubscript( BPy_constant * self, PyObject * key );
static int constantAssSubscript( BPy_constant * self, PyObject * who,
PyObject * cares );
/*****************************************************************************/
/* Python constant_Type Mapping Methods table: */
/*****************************************************************************/
static PyMappingMethods constantAsMapping = {
( inquiry ) constantLength, /* mp_length */
( binaryfunc ) constantSubscript, /* mp_subscript */
( objobjargproc ) constantAssSubscript, /* mp_ass_subscript */
};
/*****************************************************************************/
/* Python constant_Type structure definition: */
/*****************************************************************************/
PyTypeObject constant_Type = {
PyObject_HEAD_INIT( NULL )
0, /* ob_size */
"Blender constant", /* tp_name */
sizeof( BPy_constant ), /* tp_basicsize */
0, /* tp_itemsize */
/* methods */
( destructor ) constant_dealloc, /* tp_dealloc */
0, /* tp_print */
( getattrfunc ) constant_getAttr, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
( reprfunc ) constant_repr, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
&constantAsMapping, /* tp_as_mapping */
0, /* tp_as_hash */
0, 0, 0, 0, 0, 0,
0, /* tp_doc */
0, 0, 0, 0, 0, 0,
0, /* tp_methods */
0, /* tp_members */
};
/*****************************************************************************/
/* Function: constant_New */
/*****************************************************************************/
static PyObject *new_const( void );
PyObject *M_constant_New( void )
{ /* can't be static, we call it in other files */
return new_const( );
}
static PyObject *new_const( void )
{ /* this is the static one */
BPy_constant *constant;
constant_Type.ob_type = &PyType_Type;
constant =
( BPy_constant * ) PyObject_NEW( BPy_constant,
&constant_Type );
if( constant == NULL )
return ( EXPP_ReturnPyObjError( PyExc_MemoryError,
"couldn't create constant object" ) );
if( ( constant->dict = PyDict_New( ) ) == NULL )
return ( EXPP_ReturnPyObjError( PyExc_MemoryError,
"couldn't create constant object's dictionary" ) );
return ( PyObject * ) constant;
}
/*****************************************************************************/
/* Python BPy_constant methods: */
/*****************************************************************************/
int constant_insert( BPy_constant * self, char *name, PyObject * value )
{
return PyDict_SetItemString( self->dict, name, value );
}
/*****************************************************************************/
/* Function: constant_dealloc */
/* Description: This is a callback function for the BPy_constant type. It is */
/* the destructor function. */
/*****************************************************************************/
static void constant_dealloc( BPy_constant * self )
{
Py_DECREF( self->dict );
PyObject_DEL( self );
}
/*****************************************************************************/
/* Function: constant_getAttr */
/* Description: This is a callback function for the BPy_constant type. It is */
/* the function that accesses BPy_constant member variables and */
/* methods. */
/*****************************************************************************/
static PyObject *constant_getAttr( BPy_constant * self, char *name )
{
if( self->dict ) {
PyObject *v;
if( !strcmp( name, "__members__" ) )
return PyDict_Keys( self->dict );
v = PyDict_GetItemString( self->dict, name );
if( v ) {
Py_INCREF( v ); /* was a borrowed ref */
return v;
}
return ( EXPP_ReturnPyObjError( PyExc_AttributeError,
"attribute not found" ) );
}
return ( EXPP_ReturnPyObjError( PyExc_RuntimeError,
"constant object lacks a dictionary" ) );
}
/*****************************************************************************/
/* Section: Sequence Mapping */
/* These functions provide code to access constant objects as */
/* mappings. */
/*****************************************************************************/
static int constantLength( BPy_constant * self )
{
return 0;
}
static PyObject *constantSubscript( BPy_constant * self, PyObject * key )
{
if( self->dict ) {
PyObject *v = PyDict_GetItem( self->dict, key );
if( v ) {
Py_INCREF( v );
return v;
}
}
return NULL;
}
static int constantAssSubscript( BPy_constant * self, PyObject * who,
PyObject * cares )
{
/* no user assignments allowed */
return 0;
}
/*****************************************************************************/
/* Function: constant_repr */
/* Description: This is a callback function for the BPy_constant type. It */
/* builds a meaninful string to represent constant objects. */
/*****************************************************************************/
static PyObject *constant_repr( BPy_constant * self )
{
PyObject *repr = PyObject_Repr( self->dict );
return repr;
}
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