pygi-cache.c 50.6 KB
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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>
 *
 * 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
 */
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#include "pygi-info.h"
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#include "pygi-cache.h"
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#include "pygi-marshal-to-py.h"
#include "pygi-marshal-from-py.h"
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#include "pygi-marshal-cleanup.h"
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#include "pygi-type.h"
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#include <girepository.h>
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PyGIArgCache * _arg_cache_new (GITypeInfo *type_info,
                               PyGICallableCache *callable_cache,
                               GIArgInfo *arg_info,
                               GITransfer transfer,
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                               PyGIDirection direction,
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                               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,
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                                             PyGIDirection direction,
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                                             gssize c_arg_index,
                                             gssize py_arg_index);
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/* cleanup */
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void
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_pygi_arg_cache_free (PyGIArgCache *cache)
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{
    if (cache == NULL)
        return;

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    if (cache->type_info != NULL)
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        g_base_info_unref ( (GIBaseInfo *)cache->type_info);
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    if (cache->destroy_notify)
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        cache->destroy_notify (cache);
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    else
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        g_slice_free (PyGIArgCache, cache);
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}

static void
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_interface_cache_free_func (PyGIInterfaceCache *cache)
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{
    if (cache != NULL) {
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        Py_XDECREF (cache->py_type);
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        if (cache->type_name != NULL)
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            g_free (cache->type_name);
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        if (cache->interface_info != NULL)
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            g_base_info_unref ( (GIBaseInfo *)cache->interface_info);
        g_slice_free (PyGIInterfaceCache, cache);
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    }
}

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static void
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_hash_cache_free_func (PyGIHashCache *cache)
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{
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    if (cache != NULL) {
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        _pygi_arg_cache_free (cache->key_cache);
        _pygi_arg_cache_free (cache->value_cache);
        g_slice_free (PyGIHashCache, cache);
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    }
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}

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static void
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_sequence_cache_free_func (PyGISequenceCache *cache)
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{
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    if (cache != NULL) {
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        _pygi_arg_cache_free (cache->item_cache);
        g_slice_free (PyGISequenceCache, cache);
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    }
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}

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static void
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_callback_cache_free_func (PyGICallbackCache *cache)
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{
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    if (cache != NULL) {
        if (cache->interface_info != NULL)
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            g_base_info_unref ( (GIBaseInfo *)cache->interface_info);
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        g_slice_free (PyGICallbackCache, cache);
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    }
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}

void
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_pygi_callable_cache_free (PyGICallableCache *cache)
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{
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    gssize i;
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    if (cache == NULL)
        return;

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    g_slist_free (cache->to_py_args);
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    g_slist_free (cache->arg_name_list);
    g_hash_table_destroy (cache->arg_name_hash);

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    for (i = 0; i < cache->n_args; i++) {
        PyGIArgCache *tmp = cache->args_cache[i];
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        _pygi_arg_cache_free (tmp);
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    }
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    if (cache->return_cache != NULL)
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        _pygi_arg_cache_free (cache->return_cache);
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    g_slice_free1 (cache->n_args * sizeof (PyGIArgCache *), cache->args_cache);
    g_slice_free (PyGICallableCache, cache);
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}

/* cache generation */

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static PyGIInterfaceCache *
_interface_cache_new (GIInterfaceInfo *iface_info)
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{
    PyGIInterfaceCache *ic;
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    ic = g_slice_new0 (PyGIInterfaceCache);
    ( (PyGIArgCache *)ic)->destroy_notify = (GDestroyNotify)_interface_cache_free_func;
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    ic->g_type = g_registered_type_info_get_g_type ( (GIRegisteredTypeInfo *)iface_info);
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    ic->py_type = _pygi_type_import_by_gi_info ( (GIBaseInfo *) iface_info);
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    if (ic->py_type == NULL)
        return NULL;

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    ic->type_name = _pygi_g_base_info_get_fullname (iface_info);
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    return ic;
}

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static PyGISequenceCache *
_sequence_cache_new (GITypeInfo *type_info,
                     GIDirection direction,
                     GITransfer transfer,
                     gssize child_offset)
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{
    PyGISequenceCache *sc;
    GITypeInfo *item_type_info;
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    GITypeTag item_type_tag;
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    GITransfer item_transfer;
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    sc = g_slice_new0 (PyGISequenceCache);
    ( (PyGIArgCache *)sc)->destroy_notify = (GDestroyNotify)_sequence_cache_free_func;
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    sc->fixed_size = -1;
    sc->len_arg_index = -1;
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    sc->is_zero_terminated = g_type_info_is_zero_terminated (type_info);
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    if (!sc->is_zero_terminated) {
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        sc->fixed_size = g_type_info_get_array_fixed_size (type_info);
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        if (sc->fixed_size < 0)
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            sc->len_arg_index = g_type_info_get_array_length (type_info) + child_offset;
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    }
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    item_type_info = g_type_info_get_param_type (type_info, 0);

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    item_transfer =
        transfer == GI_TRANSFER_CONTAINER ? GI_TRANSFER_NOTHING : transfer;
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    sc->item_cache = _arg_cache_new (item_type_info,
                                     NULL,
                                     NULL,
                                     item_transfer,
                                     direction,
                                     0, 0);
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    if (sc->item_cache == NULL) {
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        _pygi_arg_cache_free ( (PyGIArgCache *)sc);
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        return NULL;
    }
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    sc->item_size = _pygi_g_type_info_size (item_type_info);
    g_base_info_unref ( (GIBaseInfo *)item_type_info);
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    return sc;
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}
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static PyGIHashCache *
_hash_cache_new (GITypeInfo *type_info,
                 GIDirection direction,
                 GITransfer transfer)
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{
    PyGIHashCache *hc;
    GITypeInfo *key_type_info;
    GITypeInfo *value_type_info;
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    GITransfer item_transfer;
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    hc = g_slice_new0 (PyGIHashCache);
    ( (PyGIArgCache *)hc)->destroy_notify = (GDestroyNotify)_hash_cache_free_func;
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    key_type_info = g_type_info_get_param_type (type_info, 0);
    value_type_info = g_type_info_get_param_type (type_info, 1);

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    item_transfer =
        transfer == GI_TRANSFER_CONTAINER ? GI_TRANSFER_NOTHING : transfer;
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    hc->key_cache = _arg_cache_new (key_type_info,
                                    NULL,
                                    NULL,
                                    item_transfer,
                                    direction,
                                    0, 0);
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    if (hc->key_cache == NULL) {
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        _pygi_arg_cache_free ( (PyGIArgCache *)hc);
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        return NULL;
    }

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    hc->value_cache = _arg_cache_new (value_type_info,
                                      NULL,
                                      NULL,
                                      item_transfer,
                                      direction,
                                      0, 0);
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    if (hc->value_cache == NULL) {
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        _pygi_arg_cache_free ( (PyGIArgCache *)hc);
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        return NULL;
    }

    g_base_info_unref( (GIBaseInfo *)key_type_info);
    g_base_info_unref( (GIBaseInfo *)value_type_info);

    return hc;
}
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static PyGICallbackCache *
_callback_cache_new (GIArgInfo *arg_info,
                     GIInterfaceInfo *iface_info,
                     gssize child_offset)
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{
   PyGICallbackCache *cc;

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   cc = g_slice_new0 (PyGICallbackCache);
   cc->user_data_index = g_arg_info_get_closure (arg_info);
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   if (cc->user_data_index != -1)
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       cc->user_data_index += child_offset;
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   cc->destroy_notify_index = g_arg_info_get_destroy (arg_info);
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   if (cc->destroy_notify_index != -1)
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       cc->destroy_notify_index += child_offset;
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   cc->scope = g_arg_info_get_scope (arg_info);
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   g_base_info_ref( (GIBaseInfo *)iface_info);
   cc->interface_info = iface_info;
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   return cc;
}

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static PyGIArgCache *
_arg_cache_alloc (void)
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{
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    return g_slice_new0 (PyGIArgCache);
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}
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static void
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_arg_cache_from_py_void_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_void;
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}
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static void
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_arg_cache_to_py_void_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_void;
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}

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static void
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_arg_cache_from_py_boolean_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_boolean;
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}

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static void
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_arg_cache_to_py_boolean_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_boolean;
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}

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static void
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_arg_cache_from_py_int8_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_int8;
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}

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static void
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_arg_cache_to_py_int8_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_int8;
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}

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static void
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_arg_cache_from_py_uint8_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_uint8;
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}

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static void
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_arg_cache_to_py_uint8_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_uint8;
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}

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static void
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_arg_cache_from_py_int16_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_int16;
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}

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static void
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_arg_cache_to_py_int16_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_int16;
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}

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static void
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_arg_cache_from_py_uint16_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_uint16;
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}

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static void
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_arg_cache_to_py_uint16_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_uint16;
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}

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static void
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_arg_cache_from_py_int32_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_int32;
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}

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static void
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_arg_cache_to_py_int32_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_int32;
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}

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static void
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_arg_cache_from_py_uint32_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_uint32;
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}

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static void
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_arg_cache_to_py_uint32_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_uint32;
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}

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static void
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_arg_cache_from_py_int64_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_int64;
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}

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static void
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_arg_cache_to_py_int64_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_int64;
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}

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static void
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_arg_cache_from_py_uint64_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_uint64;
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}

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static void
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_arg_cache_to_py_uint64_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_uint64;
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}

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static void
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_arg_cache_from_py_float_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_float;
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}

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static void
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_arg_cache_to_py_float_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_float;
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}

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static void
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_arg_cache_from_py_double_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_double;
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}

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static void
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_arg_cache_to_py_double_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_double;
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}

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static void
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_arg_cache_from_py_unichar_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_unichar;
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}

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static void
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_arg_cache_to_py_unichar_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_unichar;
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}

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static void
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_arg_cache_from_py_gtype_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_gtype;
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}

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static void
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_arg_cache_to_py_gtype_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_gtype;
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}

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static void
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_arg_cache_from_py_utf8_setup (PyGIArgCache *arg_cache,
                               GITransfer transfer)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_utf8;
    arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_utf8;
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}
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static void
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_arg_cache_to_py_utf8_setup (PyGIArgCache *arg_cache,
                               GITransfer transfer)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_utf8;
    arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_utf8;
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}

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static void
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_arg_cache_from_py_filename_setup (PyGIArgCache *arg_cache,
                                 GITransfer transfer)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_filename;
    arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_utf8;
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}

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static void
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_arg_cache_to_py_filename_setup (PyGIArgCache *arg_cache,
                                 GITransfer transfer)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_filename;
    arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_utf8;
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}
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static gboolean
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_arg_cache_from_py_array_setup (PyGIArgCache *arg_cache,
                                PyGICallableCache *callable_cache,
                                GITypeInfo *type_info,
                                GITransfer transfer,
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                                PyGIDirection direction,
                                gssize arg_index)
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{
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    PyGISequenceCache *seq_cache = (PyGISequenceCache *)arg_cache;
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    seq_cache->array_type = g_type_info_get_array_type (type_info);
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_array;
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    if (seq_cache->len_arg_index >= 0) {
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        PyGIArgCache *child_cache = 
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            callable_cache->args_cache[seq_cache->len_arg_index];
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        if (child_cache == NULL) {
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            child_cache = _arg_cache_alloc ();
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        } else if (child_cache->meta_type == PYGI_META_ARG_TYPE_CHILD ||
                   child_cache->meta_type == PYGI_META_ARG_TYPE_CHILD_NEEDS_UPDATE) {
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            return TRUE;
        }

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        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;

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        child_cache->direction = direction;
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        child_cache->to_py_marshaller = NULL;
        child_cache->from_py_marshaller = NULL;
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        callable_cache->args_cache[seq_cache->len_arg_index] = child_cache;
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    }

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    arg_cache->from_py_cleanup = _pygi_marshal_cleanup_to_py_array;
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    return TRUE;
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}

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static gboolean
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_arg_cache_to_py_array_setup (PyGIArgCache *arg_cache,
                              PyGICallableCache *callable_cache,
                              GITypeInfo *type_info,
                              GITransfer transfer,
                              PyGIDirection direction,
                              gssize arg_index)
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{
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    PyGISequenceCache *seq_cache = (PyGISequenceCache *)arg_cache;
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_array;
    arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_array;
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    seq_cache->array_type = g_type_info_get_array_type (type_info);
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    if (seq_cache->len_arg_index >= 0) {
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        PyGIArgCache *child_cache = callable_cache->args_cache[seq_cache->len_arg_index];
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        if (seq_cache->len_arg_index < arg_index)
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             callable_cache->n_to_py_child_args++;
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        if (child_cache != NULL) {
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            callable_cache->to_py_args =
                g_slist_remove (callable_cache->to_py_args, child_cache);
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            if (child_cache->meta_type == PYGI_META_ARG_TYPE_CHILD ||
                child_cache->meta_type == PYGI_META_ARG_TYPE_CHILD_NEEDS_UPDATE)
                return TRUE;
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        } else {
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            child_cache = _arg_cache_alloc ();
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        }
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        child_cache->meta_type = PYGI_META_ARG_TYPE_CHILD;
        child_cache->direction = direction;
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        child_cache->to_py_marshaller = NULL;
        child_cache->from_py_marshaller = NULL;
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        callable_cache->args_cache[seq_cache->len_arg_index] = child_cache;
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    }

    return TRUE;
}

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static void
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_arg_cache_from_py_glist_setup (PyGIArgCache *arg_cache,
                                GITransfer transfer)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_glist;
    arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_glist;
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}
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static void
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_arg_cache_to_py_glist_setup (PyGIArgCache *arg_cache,
                              GITransfer transfer)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_glist;
    arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_glist;
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}

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static void
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_arg_cache_from_py_gslist_setup (PyGIArgCache *arg_cache,
                                 GITransfer transfer)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_gslist;
    arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_glist;
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}
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static void
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_arg_cache_to_py_gslist_setup (PyGIArgCache *arg_cache,
                                 GITransfer transfer)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_gslist;
    arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_glist;
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}

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static void
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_arg_cache_from_py_ghash_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_ghash;
    arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_ghash;
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}

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static void
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_arg_cache_to_py_ghash_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_ghash;
    arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_ghash;
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}

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static void
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_arg_cache_from_py_gerror_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_gerror;
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    arg_cache->meta_type = PYGI_META_ARG_TYPE_CHILD;
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}

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static void
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_arg_cache_to_py_gerror_setup (PyGIArgCache *arg_cache)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_gerror;
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    arg_cache->meta_type = PYGI_META_ARG_TYPE_CHILD;
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}

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static void
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_arg_cache_from_py_interface_union_setup (PyGIArgCache *arg_cache,
                                          GITransfer transfer)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_interface_struct;
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}

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static void
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_arg_cache_to_py_interface_union_setup (PyGIArgCache *arg_cache,
                                        GITransfer transfer)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_interface_struct;
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}

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static void
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_arg_cache_from_py_interface_struct_setup (PyGIArgCache *arg_cache,
                                           GIInterfaceInfo *iface_info,
                                           GITransfer transfer)
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{
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    PyGIInterfaceCache *iface_cache = (PyGIInterfaceCache *)arg_cache;
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    iface_cache->is_foreign = g_struct_info_is_foreign ( (GIStructInfo*)iface_info);
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_interface_struct;
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    if (iface_cache->g_type == G_TYPE_VALUE)
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        arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_interface_struct_gvalue;
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    else if (iface_cache->is_foreign)
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        arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_interface_struct_foreign;
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}
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static void
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_arg_cache_to_py_interface_struct_setup (PyGIArgCache *arg_cache,
                                         GIInterfaceInfo *iface_info,
                                         GITransfer transfer)
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{
    PyGIInterfaceCache *iface_cache = (PyGIInterfaceCache *)arg_cache;
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    iface_cache->is_foreign = g_struct_info_is_foreign ( (GIStructInfo*)iface_info);
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_interface_struct;
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    if (iface_cache->is_foreign)
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        arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_interface_struct_foreign;
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}

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static void
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_arg_cache_from_py_interface_object_setup (PyGIArgCache *arg_cache,
                                           GITransfer transfer)
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{
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_interface_object;
    arg_cache->from_py_cleanup = _pygi_marshal_cleanup_from_py_interface_object;
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}

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static void
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_arg_cache_to_py_interface_object_setup (PyGIArgCache *arg_cache,
                                         GITransfer transfer)
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{
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    arg_cache->to_py_marshaller = _pygi_marshal_to_py_interface_object;
    arg_cache->to_py_cleanup = _pygi_marshal_cleanup_to_py_interface_object;
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}

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static void
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_arg_cache_from_py_interface_callback_setup (PyGIArgCache *arg_cache,
                                             PyGICallableCache *callable_cache)
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{
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    PyGICallbackCache *callback_cache = (PyGICallbackCache *)arg_cache;
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    if (callback_cache->user_data_index >= 0) {
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        PyGIArgCache *user_data_arg_cache = _arg_cache_alloc ();
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        user_data_arg_cache->meta_type = PYGI_META_ARG_TYPE_CHILD_WITH_PYARG;
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        user_data_arg_cache->direction = PYGI_DIRECTION_FROM_PYTHON;
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        callable_cache->args_cache[callback_cache->user_data_index] = user_data_arg_cache;
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    }
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    if (callback_cache->destroy_notify_index >= 0) {
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        PyGIArgCache *destroy_arg_cache = _arg_cache_alloc ();
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        destroy_arg_cache->meta_type = PYGI_META_ARG_TYPE_CHILD;
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        destroy_arg_cache->direction = PYGI_DIRECTION_FROM_PYTHON;
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        callable_cache->args_cache[callback_cache->destroy_notify_index] = destroy_arg_cache;
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    }
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    arg_cache->from_py_marshaller = _pygi_marshal_from_py_interface_callback;