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/* -*- Mode: C; c-basic-offset: 4 -*-
* vim: tabstop=4 shiftwidth=4 expandtab
*
* Copyright (C) 2011 John (J5) Palmieri <johnp@redhat.com>
* Copyright (C) 2014 Simon Feltman <sfeltman@gnome.org>
*
* 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-basictype.h"
#include "pygi-cache-private.h"
/* pygi_arg_base_setup:
* arg_cache: argument cache to initialize
* type_info: source for type related attributes to cache
* arg_info: (allow-none): source for argument related attributes to cache
* transfer: transfer mode to store in the argument cache
* direction: marshaling direction to store in the cache
*
* Initializer for PyGIArgCache
*/
void
pygi_arg_base_setup (
PyGIArgCache *arg_cache, GITypeInfo *type_info,
GIArgInfo *arg_info, /* may be NULL for return arguments */
GITransfer transfer, PyGIDirection direction)
{
arg_cache->direction = direction;
arg_cache->transfer = transfer;
arg_cache->py_arg_index = -1;
arg_cache->c_arg_index = -1;
if (type_info != NULL) {
arg_cache->is_pointer = gi_type_info_is_pointer (type_info);
arg_cache->type_tag = gi_type_info_get_tag (type_info);
gi_base_info_ref ((GIBaseInfo *)type_info);
arg_cache->type_info = type_info;
}
if (arg_info != NULL) {
gi_base_info_ref ((GIBaseInfo *)arg_info);
arg_cache->arg_info = arg_info;
}
}
gboolean
pygi_marshal_from_py_basic_type_cache_adapter (
PyGIInvokeState *state, PyGICallableCache *callable_cache,
PyGIArgCache *arg_cache, PyObject *py_arg, GIArgument *arg,
gpointer *cleanup_data)
{
*arg = pygi_marshal_from_py_basic_type (py_arg, arg_cache->type_tag,
arg_cache->transfer, cleanup_data);
return !PyErr_Occurred ();
}
PyObject *
pygi_marshal_to_py_basic_type_cache_adapter (PyGIInvokeState *state,
PyGICallableCache *callable_cache,
PyGIArgCache *arg_cache,
GIArgument *arg,
gpointer *cleanup_data)
{
return pygi_marshal_to_py_basic_type (*arg, arg_cache->type_tag,
arg_cache->transfer);
}
static gboolean
marshal_from_py_void (PyGIInvokeState *state,
PyGICallableCache *callable_cache,
PyGIArgCache *arg_cache, PyObject *py_arg,
GIArgument *arg, gpointer *cleanup_data)
{
g_warn_if_fail (arg_cache->transfer == GI_TRANSFER_NOTHING);
if (pygi_gpointer_from_py (py_arg, &(arg->v_pointer))) {
*cleanup_data = arg->v_pointer;
return TRUE;
}
return FALSE;
}
static PyObject *
marshal_to_py_void (PyGIInvokeState *state, PyGICallableCache *callable_cache,
PyGIArgCache *arg_cache, GIArgument *arg,
gpointer *cleanup_data)
{
if (arg_cache->is_pointer) {
return PyLong_FromVoidPtr (arg->v_pointer);
}
Py_RETURN_NONE;
}
static void
marshal_cleanup_from_py_utf8 (PyGIInvokeState *state, PyGIArgCache *arg_cache,
PyObject *py_arg, gpointer data,
gboolean was_processed)
{
/* We strdup strings so free unless ownership is transferred to C. */
if (was_processed && arg_cache->transfer == GI_TRANSFER_NOTHING)
g_free (data);
}
static void
marshal_cleanup_to_py_utf8 (PyGIInvokeState *state, PyGIArgCache *arg_cache,
gpointer cleanup_data, gpointer data,
gboolean was_processed)
{
/* Python copies the string so we need to free it
if the interface is transfering ownership,
whether or not it has been processed yet */
if (arg_cache->transfer == GI_TRANSFER_EVERYTHING) g_free (data);
}
PyGIArgCache *
pygi_arg_void_type_new_from_info (GITypeInfo *type_info, GIArgInfo *arg_info,
GITransfer transfer, PyGIDirection direction)
{
PyGIArgCache *arg_cache = pygi_arg_cache_alloc ();
pygi_arg_base_setup (arg_cache, type_info, arg_info, transfer, direction);
if (direction & PYGI_DIRECTION_FROM_PYTHON)
arg_cache->from_py_marshaller = marshal_from_py_void;
if (direction & PYGI_DIRECTION_TO_PYTHON)
arg_cache->to_py_marshaller = marshal_to_py_void;
return arg_cache;
}
PyGIArgCache *
pygi_arg_numeric_type_new_from_info (GITypeInfo *type_info,
GIArgInfo *arg_info, GITransfer transfer,
PyGIDirection direction)
{
PyGIArgCache *arg_cache = pygi_arg_cache_alloc ();
pygi_arg_base_setup (arg_cache, type_info, arg_info, transfer, direction);
if (direction & PYGI_DIRECTION_FROM_PYTHON)
arg_cache->from_py_marshaller =
pygi_marshal_from_py_basic_type_cache_adapter;
if (direction & PYGI_DIRECTION_TO_PYTHON)
arg_cache->to_py_marshaller =
pygi_marshal_to_py_basic_type_cache_adapter;
return arg_cache;
}
PyGIArgCache *
pygi_arg_string_type_new_from_info (GITypeInfo *type_info, GIArgInfo *arg_info,
GITransfer transfer,
PyGIDirection direction)
{
PyGIArgCache *arg_cache = pygi_arg_cache_alloc ();
pygi_arg_base_setup (arg_cache, type_info, arg_info, transfer, direction);
if (direction & PYGI_DIRECTION_FROM_PYTHON) {
arg_cache->from_py_marshaller =
pygi_marshal_from_py_basic_type_cache_adapter;
arg_cache->from_py_cleanup = marshal_cleanup_from_py_utf8;
}
if (direction & PYGI_DIRECTION_TO_PYTHON) {
arg_cache->to_py_marshaller =
pygi_marshal_to_py_basic_type_cache_adapter;
arg_cache->to_py_cleanup = marshal_cleanup_to_py_utf8;
}
return arg_cache;
}
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