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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-boxed.c: wrapper to handle 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 void
_boxed_dealloc (PyGIBoxed *self)
{
GType g_type;
if ( ( (PyGBoxed *) self)->free_on_dealloc) {
if (self->slice_allocated) {
g_slice_free1 (self->size, pyg_boxed_get_ptr (self));
} else {
g_type = pyg_type_from_object ( (PyObject *) self);
g_boxed_free (g_type, pyg_boxed_get_ptr (self));
}
}
Py_TYPE( (PyGObject *) self)->tp_free ( (PyObject *) self);
}
void *
_pygi_boxed_alloc (GIBaseInfo *info, gsize *size_out)
{
gpointer boxed = NULL;
gsize size = 0;
switch (g_base_info_get_type (info)) {
case GI_INFO_TYPE_UNION:
size = g_union_info_get_size ( (GIUnionInfo *) info);
break;
case GI_INFO_TYPE_BOXED:
case GI_INFO_TYPE_STRUCT:
size = g_struct_info_get_size ( (GIStructInfo *) info);
break;
default:
PyErr_Format (PyExc_TypeError,
"info should be Boxed or Union, not '%d'",
g_base_info_get_type (info));
return NULL;
}
if (size == 0) {
PyErr_Format (PyExc_TypeError,
"boxed cannot be created directly; try using a constructor, see: help(%s.%s)",
g_base_info_get_namespace (info),
g_base_info_get_name (info));
return NULL;
}
if( size_out != NULL)
*size_out = size;
boxed = g_slice_alloc0 (size);
if (boxed == NULL)
PyErr_NoMemory();
return boxed;
}
static PyObject *
_boxed_new (PyTypeObject *type,
PyObject *args,
PyObject *kwargs)
{
GIBaseInfo *info;
gsize size = 0;
gpointer boxed;
PyGIBoxed *self = NULL;
info = _pygi_object_get_gi_info ( (PyObject *) type, &PyGIBaseInfo_Type);
if (info == NULL) {
if (PyErr_ExceptionMatches (PyExc_AttributeError)) {
PyErr_Format (PyExc_TypeError, "missing introspection information");
}
return NULL;
}
boxed = _pygi_boxed_alloc (info, &size);
if (boxed == NULL) {
goto out;
}
self = (PyGIBoxed *) _pygi_boxed_new (type, boxed, TRUE, size);
if (self == NULL) {
g_slice_free1 (size, boxed);
goto out;
}
self->size = size;
self->slice_allocated = TRUE;
out:
g_base_info_unref (info);
return (PyObject *) self;
}
static int
_boxed_init (PyObject *self,
PyObject *args,
PyObject *kwargs)
{
static char *kwlist[] = { NULL };
if (!PyArg_ParseTupleAndKeywords (args, kwargs, "", kwlist)) {
return -1;
}
/* Don't call PyGBoxed's init, which raises an exception. */
return 0;
}
PYGLIB_DEFINE_TYPE("gi.Boxed", PyGIBoxed_Type, PyGIBoxed);
PyObject *
_pygi_boxed_new (PyTypeObject *type,
gpointer boxed,
gboolean free_on_dealloc,
gsize allocated_slice)
{
PyGIBoxed *self;
if (!boxed) {
Py_RETURN_NONE;
}
if (!PyType_IsSubtype (type, &PyGIBoxed_Type)) {
PyErr_SetString (PyExc_TypeError, "must be a subtype of gi.Boxed");
return NULL;
}
self = (PyGIBoxed *) type->tp_alloc (type, 0);
if (self == NULL) {
return NULL;
}
( (PyGBoxed *) self)->gtype = pyg_type_from_object ( (PyObject *) type);
( (PyGBoxed *) self)->free_on_dealloc = free_on_dealloc;
pyg_boxed_set_ptr (self, boxed);
if (allocated_slice > 0) {
self->size = allocated_slice;
self->slice_allocated = TRUE;
} else {
self->size = 0;
self->slice_allocated = FALSE;
}
return (PyObject *) self;
}
static PyObject *
_pygi_boxed_get_free_on_dealloc(PyGIBoxed *self, void *closure)
{
return PyBool_FromLong( ((PyGBoxed *)self)->free_on_dealloc );
}
static PyGetSetDef pygi_boxed_getsets[] = {
{ "_free_on_dealloc", (getter)_pygi_boxed_get_free_on_dealloc, (setter)0 },
{ NULL, 0, 0 }
};
void
_pygi_boxed_register_types (PyObject *m)
{
Py_TYPE(&PyGIBoxed_Type) = &PyType_Type;
PyGIBoxed_Type.tp_base = &PyGBoxed_Type;
PyGIBoxed_Type.tp_new = (newfunc) _boxed_new;
PyGIBoxed_Type.tp_init = (initproc) _boxed_init;
PyGIBoxed_Type.tp_dealloc = (destructor) _boxed_dealloc;
PyGIBoxed_Type.tp_flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE);
PyGIBoxed_Type.tp_getset = pygi_boxed_getsets;
if (PyType_Ready (&PyGIBoxed_Type))
return;
if (PyModule_AddObject (m, "Boxed", (PyObject *) &PyGIBoxed_Type))
return;
}
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