/* -*- Mode: C; c-basic-offset: 4 -*- * vim: tabstop=4 shiftwidth=4 expandtab * * Copyright (C) 2011 John (J5) Palmieri * * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 * USA */ #include "pygi-info.h" #include "pygi-cache.h" #include "pygi-marshal-to-py.h" #include "pygi-marshal-from-py.h" #include "pygi-marshal-cleanup.h" #include "pygi-type.h" #include PyGIArgCache * _arg_cache_new (GITypeInfo *type_info, PyGICallableCache *callable_cache, GIArgInfo *arg_info, GITransfer transfer, PyGIDirection direction, gssize c_arg_index, gssize py_arg_index); PyGIArgCache * _arg_cache_new_for_interface (GIInterfaceInfo *iface_info, PyGICallableCache *callable_cache, GIArgInfo *arg_info, GITransfer transfer, PyGIDirection direction, gssize c_arg_index, gssize py_arg_index); /* cleanup */ static void _pygi_arg_cache_free (PyGIArgCache *cache) { if (cache == NULL) return; if (cache->type_info != NULL) g_base_info_unref ( (GIBaseInfo *)cache->type_info); if (cache->destroy_notify) cache->destroy_notify (cache); else g_slice_free (PyGIArgCache, cache); } static void _interface_cache_free_func (PyGIInterfaceCache *cache) { if (cache != NULL) { Py_XDECREF (cache->py_type); if (cache->type_name != NULL) g_free (cache->type_name); if (cache->interface_info != NULL) g_base_info_unref ( (GIBaseInfo *)cache->interface_info); g_slice_free (PyGIInterfaceCache, cache); } } static void _hash_cache_free_func (PyGIHashCache *cache) { if (cache != NULL) { _pygi_arg_cache_free (cache->key_cache); _pygi_arg_cache_free (cache->value_cache); g_slice_free (PyGIHashCache, cache); } } static void _sequence_cache_free_func (PyGISequenceCache *cache) { if (cache != NULL) { _pygi_arg_cache_free (cache->item_cache); g_slice_free (PyGISequenceCache, cache); } } static void _callback_cache_free_func (PyGICallbackCache *cache) { if (cache != NULL) { if (cache->interface_info != NULL) g_base_info_unref ( (GIBaseInfo *)cache->interface_info); g_slice_free (PyGICallbackCache, cache); } } void _pygi_callable_cache_free (PyGICallableCache *cache) { gssize i; if (cache == NULL) return; g_slist_free (cache->to_py_args); g_slist_free (cache->arg_name_list); g_hash_table_destroy (cache->arg_name_hash); for (i = 0; i < cache->n_args; i++) { PyGIArgCache *tmp = cache->args_cache[i]; _pygi_arg_cache_free (tmp); } if (cache->return_cache != NULL) _pygi_arg_cache_free (cache->return_cache); g_slice_free1 (cache->n_args * sizeof (PyGIArgCache *), cache->args_cache); g_slice_free (PyGICallableCache, cache); } /* cache generation */ static PyGIInterfaceCache * _interface_cache_new (GIInterfaceInfo *iface_info) { PyGIInterfaceCache *ic; ic = g_slice_new0 (PyGIInterfaceCache); ( (PyGIArgCache *)ic)->destroy_notify = (GDestroyNotify)_interface_cache_free_func; ic->g_type = g_registered_type_info_get_g_type ( (GIRegisteredTypeInfo *)iface_info); ic->py_type = _pygi_type_import_by_gi_info ( (GIBaseInfo *) iface_info); if (ic->py_type == NULL) return NULL; ic->type_name = _pygi_g_base_info_get_fullname (iface_info); return ic; } static PyGISequenceCache * _sequence_cache_new (GITypeInfo *type_info, GIDirection direction, GITransfer transfer, gssize child_offset) { PyGISequenceCache *sc; GITypeInfo *item_type_info; GITransfer item_transfer; sc = g_slice_new0 (PyGISequenceCache); ( (PyGIArgCache *)sc)->destroy_notify = (GDestroyNotify)_sequence_cache_free_func; sc->is_zero_terminated = g_type_info_is_zero_terminated (type_info); sc->fixed_size = g_type_info_get_array_fixed_size (type_info); sc->len_arg_index = g_type_info_get_array_length (type_info); if (sc->len_arg_index >= 0) sc->len_arg_index += child_offset; item_type_info = g_type_info_get_param_type (type_info, 0); item_transfer = transfer == GI_TRANSFER_CONTAINER ? GI_TRANSFER_NOTHING : transfer; sc->item_cache = _arg_cache_new (item_type_info, NULL, NULL, item_transfer, direction, 0, 0); if (sc->item_cache == NULL) { _pygi_arg_cache_free ( (PyGIArgCache *)sc); return NULL; } sc->item_size = _pygi_g_type_info_size (item_type_info); g_base_info_unref ( (GIBaseInfo *)item_type_info); return sc; } static PyGIHashCache * _hash_cache_new (GITypeInfo *type_info, GIDirection direction, GITransfer transfer) { PyGIHashCache *hc; GITypeInfo *key_type_info; GITypeInfo *value_type_info; GITransfer item_transfer; hc = g_slice_new0 (PyGIHashCache); ( (PyGIArgCache *)hc)->destroy_notify = (GDestroyNotify)_hash_cache_free_func; key_type_info = g_type_info_get_param_type (type_info, 0); value_type_info = g_type_info_get_param_type (type_info, 1); item_transfer = transfer == GI_TRANSFER_CONTAINER ? GI_TRANSFER_NOTHING : transfer; hc->key_cache = _arg_cache_new (key_type_info, NULL, NULL, item_transfer, direction, 0, 0); if (hc->key_cache == NULL) { _pygi_arg_cache_free ( (PyGIArgCache *)hc); return NULL; } hc->value_cache = _arg_cache_new (value_type_info, NULL, NULL, item_transfer, direction, 0, 0); if (hc->value_cache == NULL) { _pygi_arg_cache_free ( (PyGIArgCache *)hc); return NULL; } g_base_info_unref( (GIBaseInfo *)key_type_info); g_base_info_unref( (GIBaseInfo *)value_type_info); return hc; } static PyGICallbackCache * _callback_cache_new (GIArgInfo *arg_info, GIInterfaceInfo *iface_info, gssize child_offset) { PyGICallbackCache *cc; cc = g_slice_new0 (PyGICallbackCache); ( (PyGIArgCache *)cc)->destroy_notify = (GDestroyNotify)_callback_cache_free_func; cc->user_data_index = g_arg_info_get_closure (arg_info); if (cc->user_data_index != -1) cc->user_data_index += child_offset; cc->destroy_notify_index = g_arg_info_get_destroy (arg_info); if (cc->destroy_notify_index != -1) cc->destroy_notify_index += child_offset; cc->scope = g_arg_info_get_scope (arg_info); g_base_info_ref( (GIBaseInfo *)iface_info); cc->interface_info = iface_info; return cc; } static PyGIArgCache * _arg_cache_alloc (void) { return g_slice_new0 (PyGIArgCache); } static void _arg_cache_from_py_void_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_void; } static void _arg_cache_to_py_void_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_void; } static void _arg_cache_from_py_boolean_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_boolean; } static void _arg_cache_to_py_boolean_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_boolean; } static void _arg_cache_from_py_int8_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_int8; } static void _arg_cache_to_py_int8_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_int8; } static void _arg_cache_from_py_uint8_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_uint8; } static void _arg_cache_to_py_uint8_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_uint8; } static void _arg_cache_from_py_int16_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_int16; } static void _arg_cache_to_py_int16_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_int16; } static void _arg_cache_from_py_uint16_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_uint16; } static void _arg_cache_to_py_uint16_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_uint16; } static void _arg_cache_from_py_int32_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_int32; } static void _arg_cache_to_py_int32_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_int32; } static void _arg_cache_from_py_uint32_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_uint32; } static void _arg_cache_to_py_uint32_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_uint32; } static void _arg_cache_from_py_int64_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_int64; } static void _arg_cache_to_py_int64_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_int64; } static void _arg_cache_from_py_uint64_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_uint64; } static void _arg_cache_to_py_uint64_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_uint64; } static void _arg_cache_from_py_float_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_float; } static void _arg_cache_to_py_float_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_float; } static void _arg_cache_from_py_double_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_double; } static void _arg_cache_to_py_double_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_double; } static void _arg_cache_from_py_unichar_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_unichar; } static void _arg_cache_to_py_unichar_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_unichar; } static void _arg_cache_from_py_gtype_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_gtype; } static void _arg_cache_to_py_gtype_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_gtype; } static void _arg_cache_from_py_utf8_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_utf8; arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_utf8; } static void _arg_cache_to_py_utf8_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_utf8; arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_utf8; } static void _arg_cache_from_py_filename_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_filename; arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_utf8; } static void _arg_cache_to_py_filename_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_filename; arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_utf8; } static gboolean _arg_cache_from_py_array_setup (PyGIArgCache *arg_cache, PyGICallableCache *callable_cache, GITypeInfo *type_info, GITransfer transfer, PyGIDirection direction, gssize arg_index) { PyGISequenceCache *seq_cache = (PyGISequenceCache *)arg_cache; seq_cache->array_type = g_type_info_get_array_type (type_info); arg_cache->from_py_marshaller = _pygi_marshal_from_py_array; if (seq_cache->len_arg_index >= 0) { PyGIArgCache *child_cache = callable_cache->args_cache[seq_cache->len_arg_index]; if (child_cache == NULL) { child_cache = _arg_cache_alloc (); } else if (child_cache->meta_type == PYGI_META_ARG_TYPE_CHILD || child_cache->meta_type == PYGI_META_ARG_TYPE_CHILD_NEEDS_UPDATE) { return TRUE; } if (seq_cache->len_arg_index < arg_index) child_cache->meta_type = PYGI_META_ARG_TYPE_CHILD_NEEDS_UPDATE; else child_cache->meta_type = PYGI_META_ARG_TYPE_CHILD; child_cache->direction = direction; child_cache->to_py_marshaller = NULL; child_cache->from_py_marshaller = NULL; callable_cache->args_cache[seq_cache->len_arg_index] = child_cache; } arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_array; return TRUE; } static gboolean _arg_cache_to_py_array_setup (PyGIArgCache *arg_cache, PyGICallableCache *callable_cache, GITypeInfo *type_info, GITransfer transfer, PyGIDirection direction, gssize arg_index) { PyGISequenceCache *seq_cache = (PyGISequenceCache *)arg_cache; arg_cache->to_py_marshaller = _pygi_marshal_to_py_array; arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_array; seq_cache->array_type = g_type_info_get_array_type (type_info); if (seq_cache->len_arg_index >= 0) { PyGIArgCache *child_cache = callable_cache->args_cache[seq_cache->len_arg_index]; if (seq_cache->len_arg_index < arg_index) callable_cache->n_to_py_child_args++; if (child_cache != NULL) { callable_cache->to_py_args = g_slist_remove (callable_cache->to_py_args, child_cache); if (child_cache->meta_type == PYGI_META_ARG_TYPE_CHILD || child_cache->meta_type == PYGI_META_ARG_TYPE_CHILD_NEEDS_UPDATE) return TRUE; } else { child_cache = _arg_cache_alloc (); } child_cache->meta_type = PYGI_META_ARG_TYPE_CHILD; child_cache->direction = direction; child_cache->to_py_marshaller = NULL; child_cache->from_py_marshaller = NULL; callable_cache->args_cache[seq_cache->len_arg_index] = child_cache; } return TRUE; } static void _arg_cache_from_py_glist_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_glist; arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_glist; } static void _arg_cache_to_py_glist_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_glist; arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_glist; } static void _arg_cache_from_py_gslist_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_gslist; arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_glist; } static void _arg_cache_to_py_gslist_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_gslist; arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_glist; } static void _arg_cache_from_py_ghash_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_ghash; arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_ghash; } static void _arg_cache_to_py_ghash_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_ghash; arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_ghash; } static void _arg_cache_from_py_gerror_setup (PyGIArgCache *arg_cache) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_gerror; arg_cache->meta_type = PYGI_META_ARG_TYPE_CHILD; } static void _arg_cache_to_py_gerror_setup (PyGIArgCache *arg_cache) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_gerror; arg_cache->meta_type = PYGI_META_ARG_TYPE_CHILD; } static void _arg_cache_from_py_interface_union_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_interface_struct; } static void _arg_cache_to_py_interface_union_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_interface_struct; } static void _arg_cache_from_py_interface_struct_setup (PyGIArgCache *arg_cache, GIInterfaceInfo *iface_info, GITransfer transfer) { PyGIInterfaceCache *iface_cache = (PyGIInterfaceCache *)arg_cache; iface_cache->is_foreign = g_struct_info_is_foreign ( (GIStructInfo*)iface_info); arg_cache->from_py_marshaller = _pygi_marshal_from_py_interface_struct; if (iface_cache->g_type == G_TYPE_VALUE) arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_interface_struct_gvalue; else if (iface_cache->is_foreign) arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_interface_struct_foreign; } static void _arg_cache_to_py_interface_struct_setup (PyGIArgCache *arg_cache, GIInterfaceInfo *iface_info, GITransfer transfer) { PyGIInterfaceCache *iface_cache = (PyGIInterfaceCache *)arg_cache; iface_cache->is_foreign = g_struct_info_is_foreign ( (GIStructInfo*)iface_info); arg_cache->to_py_marshaller = _pygi_marshal_to_py_interface_struct; if (iface_cache->is_foreign) arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_interface_struct_foreign; } static void _arg_cache_from_py_interface_object_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_interface_object; arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_interface_object; } static void _arg_cache_to_py_interface_object_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_interface_object; arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_interface_object; } static void _arg_cache_from_py_interface_callback_setup (PyGIArgCache *arg_cache, PyGICallableCache *callable_cache) { PyGICallbackCache *callback_cache = (PyGICallbackCache *)arg_cache; if (callback_cache->user_data_index >= 0) { PyGIArgCache *user_data_arg_cache = _arg_cache_alloc (); user_data_arg_cache->meta_type = PYGI_META_ARG_TYPE_CHILD_WITH_PYARG; user_data_arg_cache->direction = PYGI_DIRECTION_FROM_PYTHON; callable_cache->args_cache[callback_cache->user_data_index] = user_data_arg_cache; } if (callback_cache->destroy_notify_index >= 0) { PyGIArgCache *destroy_arg_cache = _arg_cache_alloc (); destroy_arg_cache->meta_type = PYGI_META_ARG_TYPE_CHILD; destroy_arg_cache->direction = PYGI_DIRECTION_FROM_PYTHON; callable_cache->args_cache[callback_cache->destroy_notify_index] = destroy_arg_cache; } arg_cache->from_py_marshaller = _pygi_marshal_from_py_interface_callback; arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_interface_callback; } static void _arg_cache_to_py_interface_callback_setup (void) { PyErr_Format(PyExc_NotImplementedError, "Callback returns are not supported"); } static void _arg_cache_from_py_interface_enum_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_interface_enum; } static void _arg_cache_to_py_interface_enum_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_interface_enum; } static void _arg_cache_from_py_interface_flags_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->from_py_marshaller = _pygi_marshal_from_py_interface_flags; } static void _arg_cache_to_py_interface_flags_setup (PyGIArgCache *arg_cache, GITransfer transfer) { arg_cache->to_py_marshaller = _pygi_marshal_to_py_interface_flags; } PyGIArgCache * _arg_cache_new_for_interface (GIInterfaceInfo *iface_info, PyGICallableCache *callable_cache, GIArgInfo *arg_info, GITransfer transfer, PyGIDirection direction, gssize c_arg_index, gssize py_arg_index) { PyGIInterfaceCache *iface_cache = NULL; PyGIArgCache *arg_cache = NULL; gssize child_offset = 0; GIInfoType info_type; if (callable_cache != NULL) child_offset = (callable_cache->function_type == PYGI_FUNCTION_TYPE_METHOD || callable_cache->function_type == PYGI_FUNCTION_TYPE_VFUNC) ? 1: 0; info_type = g_base_info_get_type ( (GIBaseInfo *)iface_info); /* Callbacks are special cased */ if (info_type != GI_INFO_TYPE_CALLBACK) { iface_cache = _interface_cache_new (iface_info); arg_cache = (PyGIArgCache *)iface_cache; if (arg_cache == NULL) return NULL; } switch (info_type) { case GI_INFO_TYPE_UNION: if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_interface_union_setup (arg_cache, transfer); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_interface_union_setup (arg_cache, transfer); break; case GI_INFO_TYPE_STRUCT: if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_interface_struct_setup (arg_cache, iface_info, transfer); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_interface_struct_setup (arg_cache, iface_info, transfer); break; case GI_INFO_TYPE_OBJECT: case GI_INFO_TYPE_INTERFACE: if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_interface_object_setup (arg_cache, transfer); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_interface_object_setup (arg_cache, transfer); break; case GI_INFO_TYPE_BOXED: if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_interface_struct_setup (arg_cache, iface_info, transfer); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_interface_struct_setup (arg_cache, iface_info, transfer); break; case GI_INFO_TYPE_CALLBACK: { PyGICallbackCache *callback_cache; if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) { _arg_cache_to_py_interface_callback_setup (); return NULL; } callback_cache = _callback_cache_new (arg_info, iface_info, child_offset); arg_cache = (PyGIArgCache *)callback_cache; if (arg_cache == NULL) return NULL; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_interface_callback_setup (arg_cache, callable_cache); break; } case GI_INFO_TYPE_ENUM: if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_interface_enum_setup (arg_cache, transfer); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_interface_enum_setup (arg_cache, transfer); break; case GI_INFO_TYPE_FLAGS: if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_interface_flags_setup (arg_cache, transfer); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_interface_flags_setup (arg_cache, transfer); break; default: g_assert_not_reached (); } if (arg_cache != NULL) { arg_cache->direction = direction; arg_cache->transfer = transfer; arg_cache->type_tag = GI_TYPE_TAG_INTERFACE; arg_cache->py_arg_index = py_arg_index; arg_cache->c_arg_index = c_arg_index; if (iface_cache != NULL) { g_base_info_ref ( (GIBaseInfo *)iface_info); iface_cache->interface_info = iface_info; } } return arg_cache; } PyGIArgCache * _arg_cache_new (GITypeInfo *type_info, PyGICallableCache *callable_cache, GIArgInfo *arg_info, GITransfer transfer, PyGIDirection direction, gssize c_arg_index, gssize py_arg_index) { PyGIArgCache *arg_cache = NULL; gssize child_offset = 0; GITypeTag type_tag; type_tag = g_type_info_get_tag (type_info); if (callable_cache != NULL) child_offset = (callable_cache->function_type == PYGI_FUNCTION_TYPE_METHOD || callable_cache->function_type == PYGI_FUNCTION_TYPE_VFUNC) ? 1: 0; switch (type_tag) { case GI_TYPE_TAG_VOID: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_void_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_void_setup (arg_cache); break; case GI_TYPE_TAG_BOOLEAN: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_boolean_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_boolean_setup (arg_cache); break; case GI_TYPE_TAG_INT8: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_int8_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_int8_setup (arg_cache); break; case GI_TYPE_TAG_UINT8: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_uint8_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_uint8_setup (arg_cache); break; case GI_TYPE_TAG_INT16: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_int16_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_int16_setup (arg_cache); break; case GI_TYPE_TAG_UINT16: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_uint16_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_uint16_setup (arg_cache); break; case GI_TYPE_TAG_INT32: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_int32_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_int32_setup (arg_cache); break; case GI_TYPE_TAG_UINT32: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_uint32_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_uint32_setup (arg_cache); break; case GI_TYPE_TAG_INT64: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_int64_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_int64_setup (arg_cache); break; case GI_TYPE_TAG_UINT64: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_uint64_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_uint64_setup (arg_cache); break; case GI_TYPE_TAG_FLOAT: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_float_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_float_setup (arg_cache); break; case GI_TYPE_TAG_DOUBLE: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_double_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_double_setup (arg_cache); break; case GI_TYPE_TAG_UNICHAR: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_unichar_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_unichar_setup (arg_cache); break; case GI_TYPE_TAG_GTYPE: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_gtype_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_gtype_setup (arg_cache); break; case GI_TYPE_TAG_UTF8: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_utf8_setup (arg_cache, transfer); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_utf8_setup (arg_cache, transfer); break; case GI_TYPE_TAG_FILENAME: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_filename_setup (arg_cache, transfer); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_filename_setup (arg_cache, transfer); break; case GI_TYPE_TAG_ARRAY: { PyGISequenceCache *seq_cache = _sequence_cache_new (type_info, direction, transfer, child_offset); arg_cache = (PyGIArgCache *)seq_cache; if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_array_setup (arg_cache, callable_cache, type_info, transfer, direction, c_arg_index); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_array_setup (arg_cache, callable_cache, type_info, transfer, direction, c_arg_index); /* ugly edge case code: * * length can come before the array parameter which means we * need to update indexes if this happens */ if (seq_cache->len_arg_index > -1 && callable_cache->args_cache[seq_cache->len_arg_index]->meta_type == PYGI_META_ARG_TYPE_CHILD_NEEDS_UPDATE) { gssize i; PyGIArgCache *child_cache = callable_cache->args_cache[seq_cache->len_arg_index]; child_cache->meta_type = PYGI_META_ARG_TYPE_CHILD; py_arg_index -= 1; callable_cache->n_py_args -= 1; for (i = seq_cache->len_arg_index + 1; i < callable_cache->n_args; i++) { PyGIArgCache *update_cache = callable_cache->args_cache[i]; if (update_cache == NULL) break; update_cache->py_arg_index -= 1; } } break; } case GI_TYPE_TAG_GLIST: { PyGISequenceCache *seq_cache = _sequence_cache_new (type_info, direction, transfer, child_offset); arg_cache = (PyGIArgCache *)seq_cache; if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_glist_setup (arg_cache, transfer); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_glist_setup (arg_cache, transfer); break; } case GI_TYPE_TAG_GSLIST: { PyGISequenceCache *seq_cache = _sequence_cache_new (type_info, direction, transfer, child_offset); arg_cache = (PyGIArgCache *)seq_cache; if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_gslist_setup (arg_cache, transfer); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_gslist_setup (arg_cache, transfer); break; } case GI_TYPE_TAG_GHASH: arg_cache = (PyGIArgCache *)_hash_cache_new (type_info, direction, transfer); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_ghash_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) { _arg_cache_to_py_ghash_setup (arg_cache); } break; case GI_TYPE_TAG_INTERFACE: { GIInterfaceInfo *interface_info = g_type_info_get_interface (type_info); arg_cache = _arg_cache_new_for_interface (interface_info, callable_cache, arg_info, transfer, direction, c_arg_index, py_arg_index); g_base_info_unref ( (GIBaseInfo *)interface_info); break; } case GI_TYPE_TAG_ERROR: arg_cache = _arg_cache_alloc (); if (arg_cache == NULL) break; if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_from_py_gerror_setup (arg_cache); if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) _arg_cache_to_py_gerror_setup (arg_cache); break; } if (arg_cache != NULL) { arg_cache->direction = direction; arg_cache->transfer = transfer; arg_cache->type_tag = type_tag; arg_cache->py_arg_index = py_arg_index; arg_cache->c_arg_index = c_arg_index; arg_cache->is_pointer = g_type_info_is_pointer (type_info); g_base_info_ref ( (GIBaseInfo *) type_info); arg_cache->type_info = type_info; } return arg_cache; } static void _arg_name_list_generate (PyGICallableCache *callable_cache) { GSList * arg_name_list = NULL; int i; if (callable_cache->arg_name_hash == NULL) { callable_cache->arg_name_hash = g_hash_table_new (g_str_hash, g_str_equal); } else { g_hash_table_remove_all (callable_cache->arg_name_hash); } for (i=0; i < callable_cache->n_args; i++) { PyGIArgCache *arg_cache = NULL; arg_cache = callable_cache->args_cache[i]; if (arg_cache->meta_type != PYGI_META_ARG_TYPE_CHILD && arg_cache->meta_type != PYGI_META_ARG_TYPE_CLOSURE && (arg_cache->direction == PYGI_DIRECTION_FROM_PYTHON || arg_cache->direction == PYGI_DIRECTION_BIDIRECTIONAL)) { gpointer arg_name = (gpointer)arg_cache->arg_name; arg_name_list = g_slist_prepend (arg_name_list, arg_name); if (arg_name != NULL) { g_hash_table_insert (callable_cache->arg_name_hash, arg_name, arg_name); } } } callable_cache->arg_name_list = g_slist_reverse (arg_name_list); } /* Generate the cache for the callable's arguments */ static gboolean _args_cache_generate (GICallableInfo *callable_info, PyGICallableCache *callable_cache) { gssize arg_index = 0; gssize i; GITypeInfo *return_info; GITransfer return_transfer; PyGIArgCache *return_cache; PyGIDirection return_direction; /* determine if we are marshalling the return to or from python */ if (callable_cache->function_type == PYGI_FUNCTION_TYPE_CALLBACK) return_direction = PYGI_DIRECTION_FROM_PYTHON; else return_direction = PYGI_DIRECTION_TO_PYTHON; /* cache the return arg */ return_info = g_callable_info_get_return_type (callable_info); return_transfer = g_callable_info_get_caller_owns (callable_info); return_cache = _arg_cache_new (return_info, callable_cache, NULL, return_transfer, return_direction, -1, -1); if (return_cache == NULL) return FALSE; return_cache->is_skipped = g_callable_info_skip_return (callable_info); callable_cache->return_cache = return_cache; g_base_info_unref (return_info); /* first arg is the instance */ if (callable_cache->function_type == PYGI_FUNCTION_TYPE_METHOD || callable_cache->function_type == PYGI_FUNCTION_TYPE_VFUNC) { GIInterfaceInfo *interface_info; PyGIArgCache *instance_cache; PyGIDirection instance_direction; instance_direction = PYGI_DIRECTION_FROM_PYTHON; interface_info = g_base_info_get_container ( (GIBaseInfo *)callable_info); instance_cache = _arg_cache_new_for_interface (interface_info, callable_cache, NULL, GI_TRANSFER_NOTHING, instance_direction, arg_index, 0); /* FIXME: marshal interfaces from_py */ instance_cache->from_py_marshaller = _pygi_marshal_from_py_interface_instance; g_base_info_unref ( (GIBaseInfo *)interface_info); if (instance_cache == NULL) return FALSE; callable_cache->args_cache[arg_index] = instance_cache; arg_index++; callable_cache->n_from_py_args++; callable_cache->n_py_args++; } for (i=0; arg_index < callable_cache->n_args; arg_index++, i++) { PyGIArgCache *arg_cache = NULL; GIArgInfo *arg_info; GITypeInfo *type_info; GIDirection gi_direction; PyGIDirection direction; GITransfer transfer; GITypeTag type_tag; gboolean is_caller_allocates = FALSE; gssize py_arg_index = -1; arg_info = g_callable_info_get_arg (callable_info, i); if (g_arg_info_get_closure (arg_info) == i) { arg_cache = _arg_cache_alloc (); callable_cache->args_cache[arg_index] = arg_cache; arg_cache->arg_name = g_base_info_get_name ((GIBaseInfo *) arg_info); arg_cache->direction = PYGI_DIRECTION_FROM_PYTHON; arg_cache->meta_type = PYGI_META_ARG_TYPE_CLOSURE; arg_cache->c_arg_index = i; callable_cache->n_from_py_args++; g_base_info_unref ( (GIBaseInfo *)arg_info); continue; } /* For vfuncs and callbacks our marshalling directions are reversed */ gi_direction = g_arg_info_get_direction (arg_info); if (gi_direction == GI_DIRECTION_INOUT) { direction = PYGI_DIRECTION_BIDIRECTIONAL; } else if (gi_direction == GI_DIRECTION_IN) { direction = PYGI_DIRECTION_FROM_PYTHON; if (callable_cache->function_type == PYGI_FUNCTION_TYPE_CALLBACK) direction = PYGI_DIRECTION_TO_PYTHON; } else { direction = PYGI_DIRECTION_TO_PYTHON; if (callable_cache->function_type == PYGI_FUNCTION_TYPE_CALLBACK) direction = PYGI_DIRECTION_FROM_PYTHON; } transfer = g_arg_info_get_ownership_transfer (arg_info); type_info = g_arg_info_get_type (arg_info); type_tag = g_type_info_get_tag (type_info); if (type_tag == GI_TYPE_TAG_INTERFACE) is_caller_allocates = g_arg_info_is_caller_allocates (arg_info); /* must be an child arg filled in by its owner * and continue * fill in it's c_arg_index, add to the in count */ if (callable_cache->args_cache[arg_index] != NULL) { arg_cache = callable_cache->args_cache[arg_index]; if (arg_cache->meta_type == PYGI_META_ARG_TYPE_CHILD_WITH_PYARG) { arg_cache->py_arg_index = callable_cache->n_py_args; callable_cache->n_py_args++; } if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) { arg_cache->c_arg_index = callable_cache->n_from_py_args; callable_cache->n_from_py_args++; } if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) { callable_cache->n_to_py_args++; callable_cache->n_to_py_child_args++; } arg_cache->type_tag = g_type_info_get_tag (type_info); g_base_info_unref ( (GIBaseInfo *)arg_info); continue; } if (direction == PYGI_DIRECTION_FROM_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) { py_arg_index = callable_cache->n_py_args; callable_cache->n_from_py_args++; callable_cache->n_py_args++; } arg_cache = _arg_cache_new (type_info, callable_cache, arg_info, transfer, direction, arg_index, py_arg_index); if (arg_cache == NULL) goto arg_err; arg_cache->arg_name = g_base_info_get_name ((GIBaseInfo *) arg_info); arg_cache->allow_none = g_arg_info_may_be_null(arg_info); arg_cache->is_caller_allocates = is_caller_allocates; if (direction == PYGI_DIRECTION_TO_PYTHON || direction == PYGI_DIRECTION_BIDIRECTIONAL) { callable_cache->n_to_py_args++; if (arg_cache == NULL) goto arg_err; callable_cache->to_py_args = g_slist_append (callable_cache->to_py_args, arg_cache); } callable_cache->args_cache[arg_index] = arg_cache; g_base_info_unref( (GIBaseInfo *)type_info); g_base_info_unref( (GIBaseInfo *)arg_info); continue; arg_err: g_base_info_unref( (GIBaseInfo *)type_info); g_base_info_unref( (GIBaseInfo *)arg_info); return FALSE; } _arg_name_list_generate (callable_cache); return TRUE; } PyGICallableCache * _pygi_callable_cache_new (GICallableInfo *callable_info, gboolean is_ccallback) { PyGICallableCache *cache; GIInfoType type = g_base_info_get_type ( (GIBaseInfo *)callable_info); cache = g_slice_new0 (PyGICallableCache); if (cache == NULL) return NULL; cache->name = g_base_info_get_name ((GIBaseInfo *)callable_info); if (type == GI_INFO_TYPE_FUNCTION) { GIFunctionInfoFlags flags; flags = g_function_info_get_flags ( (GIFunctionInfo *)callable_info); if (flags & GI_FUNCTION_IS_CONSTRUCTOR) cache->function_type = PYGI_FUNCTION_TYPE_CONSTRUCTOR; else if (flags & GI_FUNCTION_IS_METHOD) cache->function_type = PYGI_FUNCTION_TYPE_METHOD; } else if (type == GI_INFO_TYPE_VFUNC) { cache->function_type = PYGI_FUNCTION_TYPE_VFUNC; } else if (type == GI_INFO_TYPE_CALLBACK) { if (is_ccallback) cache->function_type = PYGI_FUNCTION_TYPE_CCALLBACK; else cache->function_type = PYGI_FUNCTION_TYPE_CALLBACK; } else { cache->function_type = PYGI_FUNCTION_TYPE_METHOD; } cache->n_args = g_callable_info_get_n_args (callable_info); /* if we are a method or vfunc make sure the instance parameter is counted */ if (cache->function_type == PYGI_FUNCTION_TYPE_METHOD || cache->function_type == PYGI_FUNCTION_TYPE_VFUNC) cache->n_args++; if (cache->n_args > 0) cache->args_cache = g_slice_alloc0 (cache->n_args * sizeof (PyGIArgCache *)); if (!_args_cache_generate (callable_info, cache)) goto err; return cache; err: _pygi_callable_cache_free (cache); return NULL; }