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/* -*- Mode: C; c-basic-offset: 4 -*-
* vim: tabstop=4 shiftwidth=4 expandtab
*
* Copyright (C) 2009 Simon van der Linden <svdlinden@src.gnome.org>
*
* pygi-struct.c: wrapper to handle non-registered structures.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "pygi-private.h"
#include "pygobject-private.h"
#include <girepository.h>
#include <pyglib-python-compat.h>
static GIBaseInfo *
_struct_get_info (PyObject *self)
{
PyObject *py_info;
GIBaseInfo *info = NULL;
py_info = PyObject_GetAttrString (self, "__info__");
if (py_info == NULL) {
return NULL;
}
if (!PyObject_TypeCheck (py_info, &PyGIStructInfo_Type) &&
!PyObject_TypeCheck (py_info, &PyGIUnionInfo_Type)) {
PyErr_Format (PyExc_TypeError, "attribute '__info__' must be %s or %s, not %s",
PyGIStructInfo_Type.tp_name,
PyGIUnionInfo_Type.tp_name,
Py_TYPE(py_info)->tp_name);
goto out;
}
info = ( (PyGIBaseInfo *) py_info)->info;
g_base_info_ref (info);
out:
Py_DECREF (py_info);
return info;
}
static void
_struct_dealloc (PyGIStruct *self)
{
GIBaseInfo *info = _struct_get_info ( (PyObject *) self );
if (info != NULL && g_struct_info_is_foreign ( (GIStructInfo *) info)) {
pygi_struct_foreign_release (info, pyg_pointer_get_ptr (self));
} else if (self->free_on_dealloc) {
g_free (pyg_pointer_get_ptr (self));
}
if (info != NULL) {
g_base_info_unref (info);
}
Py_TYPE (self)->tp_free ((PyObject *)self);
}
static PyObject *
_struct_new (PyTypeObject *type,
PyObject *args,
PyObject *kwargs)
{
static char *kwlist[] = { NULL };
GIBaseInfo *info;
gsize size;
gpointer pointer;
PyObject *self = NULL;
if (!PyArg_ParseTupleAndKeywords (args, kwargs, "", kwlist)) {
return NULL;
}
info = _struct_get_info ( (PyObject *) type );
if (info == NULL) {
if (PyErr_ExceptionMatches (PyExc_AttributeError)) {
PyErr_Format (PyExc_TypeError, "missing introspection information");
}
return NULL;
}
size = g_struct_info_get_size ( (GIStructInfo *) info);
if (size == 0) {
PyErr_Format (PyExc_TypeError,
"struct cannot be created directly; try using a constructor, see: help(%s.%s)",
g_base_info_get_namespace (info),
g_base_info_get_name (info));
goto out;
}
pointer = g_try_malloc0 (size);
if (pointer == NULL) {
PyErr_NoMemory();
goto out;
}
self = _pygi_struct_new (type, pointer, TRUE);
if (self == NULL) {
g_free (pointer);
}
out:
g_base_info_unref (info);
return (PyObject *) self;
}
static int
_struct_init (PyObject *self,
PyObject *args,
PyObject *kwargs)
{
/* Don't call PyGPointer's init, which raises an exception. */
return 0;
}
PYGLIB_DEFINE_TYPE("gi.Struct", PyGIStruct_Type, PyGIStruct);
PyObject *
_pygi_struct_new (PyTypeObject *type,
gpointer pointer,
gboolean free_on_dealloc)
{
PyGIStruct *self;
GType g_type;
if (!PyType_IsSubtype (type, &PyGIStruct_Type)) {
PyErr_SetString (PyExc_TypeError, "must be a subtype of gi.Struct");
return NULL;
}
self = (PyGIStruct *) type->tp_alloc (type, 0);
if (self == NULL) {
return NULL;
}
g_type = pyg_type_from_object ( (PyObject *) type);
pyg_pointer_set_ptr (self, pointer);
( (PyGPointer *) self)->gtype = g_type;
self->free_on_dealloc = free_on_dealloc;
return (PyObject *) self;
}
static PyObject *
_struct_repr(PyGIStruct *self)
{
PyObject* repr;
GIBaseInfo *info;
PyGPointer *pointer = (PyGPointer *)self;
info = _struct_get_info ((PyObject *)self);
if (info == NULL)
return NULL;
repr = PYGLIB_PyUnicode_FromFormat ("<%s.%s object at %p (%s at %p)>",
g_base_info_get_namespace (info),
g_base_info_get_name (info),
self, g_type_name (pointer->gtype),
pointer->pointer);
g_base_info_unref (info);
return repr;
}
void
_pygi_struct_register_types (PyObject *m)
{
Py_TYPE(&PyGIStruct_Type) = &PyType_Type;
PyGIStruct_Type.tp_base = &PyGPointer_Type;
PyGIStruct_Type.tp_new = (newfunc) _struct_new;
PyGIStruct_Type.tp_init = (initproc) _struct_init;
PyGIStruct_Type.tp_dealloc = (destructor) _struct_dealloc;
PyGIStruct_Type.tp_flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE);
PyGIStruct_Type.tp_repr = (reprfunc)_struct_repr;
if (PyType_Ready (&PyGIStruct_Type))
return;
if (PyModule_AddObject (m, "Struct", (PyObject *) &PyGIStruct_Type))
return;
}
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