/* -*- Mode: C; c-basic-offset: 4 -*- * vim: tabstop=4 shiftwidth=4 expandtab * * Copyright (C) 2005-2009 Johan Dahlin * * pygi-argument.c: GIArgument - PyObject conversion functions. * * 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 . */ #include #include #include #include "pygobject-internal.h" #include #include #include "pygi-argument.h" #include "pygi-info.h" #include "pygi-value.h" #include "pygi-basictype.h" #include "pygi-object.h" #include "pygi-struct-marshal.h" #include "pygi-error.h" #include "pygi-foreign.h" #include "pygi-type.h" #include "pygi-util.h" gboolean pygi_argument_to_gssize (GIArgument *arg_in, GITypeTag type_tag, gssize *gssize_out) { switch (type_tag) { case GI_TYPE_TAG_INT8: *gssize_out = arg_in->v_int8; return TRUE; case GI_TYPE_TAG_UINT8: *gssize_out = arg_in->v_uint8; return TRUE; case GI_TYPE_TAG_INT16: *gssize_out = arg_in->v_int16; return TRUE; case GI_TYPE_TAG_UINT16: *gssize_out = arg_in->v_uint16; return TRUE; case GI_TYPE_TAG_INT32: *gssize_out = arg_in->v_int32; return TRUE; case GI_TYPE_TAG_UINT32: *gssize_out = arg_in->v_uint32; return TRUE; case GI_TYPE_TAG_INT64: if (arg_in->v_int64 > G_MAXSSIZE || arg_in->v_int64 < G_MINSSIZE) { PyErr_Format (PyExc_TypeError, "Unable to marshal %s to gssize", g_type_tag_to_string(type_tag)); return FALSE; } *gssize_out = (gssize)arg_in->v_int64; return TRUE; case GI_TYPE_TAG_UINT64: if (arg_in->v_uint64 > G_MAXSSIZE) { PyErr_Format (PyExc_TypeError, "Unable to marshal %s to gssize", g_type_tag_to_string(type_tag)); return FALSE; } *gssize_out = (gssize)arg_in->v_uint64; return TRUE; default: PyErr_Format (PyExc_TypeError, "Unable to marshal %s to gssize", g_type_tag_to_string(type_tag)); return FALSE; } } static GITypeTag _pygi_get_storage_type (GITypeInfo *type_info) { GITypeTag type_tag = g_type_info_get_tag (type_info); if (type_tag == GI_TYPE_TAG_INTERFACE) { GIBaseInfo *interface = g_type_info_get_interface (type_info); switch (g_base_info_get_type (interface)) { case GI_INFO_TYPE_ENUM: case GI_INFO_TYPE_FLAGS: type_tag = g_enum_info_get_storage_type ((GIEnumInfo *)interface); break; default: /* FIXME: we might have something to do for other types */ break; } g_base_info_unref (interface); } return type_tag; } void _pygi_hash_pointer_to_arg (GIArgument *arg, GITypeInfo *type_info) { GITypeTag type_tag = _pygi_get_storage_type (type_info); switch (type_tag) { case GI_TYPE_TAG_INT8: arg->v_int8 = (gint8)GPOINTER_TO_INT (arg->v_pointer); break; case GI_TYPE_TAG_INT16: arg->v_int16 = (gint16)GPOINTER_TO_INT (arg->v_pointer); break; case GI_TYPE_TAG_INT32: arg->v_int32 = (gint32)GPOINTER_TO_INT (arg->v_pointer); break; case GI_TYPE_TAG_UINT8: arg->v_uint8 = (guint8)GPOINTER_TO_UINT (arg->v_pointer); break; case GI_TYPE_TAG_UINT16: arg->v_uint16 = (guint16)GPOINTER_TO_UINT (arg->v_pointer); break; case GI_TYPE_TAG_UINT32: arg->v_uint32 = (guint32)GPOINTER_TO_UINT (arg->v_pointer); break; case GI_TYPE_TAG_GTYPE: arg->v_size = GPOINTER_TO_SIZE (arg->v_pointer); break; case GI_TYPE_TAG_UTF8: case GI_TYPE_TAG_FILENAME: case GI_TYPE_TAG_INTERFACE: case GI_TYPE_TAG_ARRAY: break; default: g_critical ("Unsupported type %s", g_type_tag_to_string(type_tag)); } } gpointer _pygi_arg_to_hash_pointer (const GIArgument *arg, GITypeInfo *type_info) { GITypeTag type_tag = _pygi_get_storage_type (type_info); switch (type_tag) { case GI_TYPE_TAG_INT8: return GINT_TO_POINTER (arg->v_int8); case GI_TYPE_TAG_UINT8: return GINT_TO_POINTER (arg->v_uint8); case GI_TYPE_TAG_INT16: return GINT_TO_POINTER (arg->v_int16); case GI_TYPE_TAG_UINT16: return GINT_TO_POINTER (arg->v_uint16); case GI_TYPE_TAG_INT32: return GINT_TO_POINTER (arg->v_int32); case GI_TYPE_TAG_UINT32: return GINT_TO_POINTER (arg->v_uint32); case GI_TYPE_TAG_GTYPE: return GSIZE_TO_POINTER (arg->v_size); case GI_TYPE_TAG_UTF8: case GI_TYPE_TAG_FILENAME: case GI_TYPE_TAG_INTERFACE: case GI_TYPE_TAG_ARRAY: return arg->v_pointer; default: g_critical ("Unsupported type %s", g_type_tag_to_string(type_tag)); return arg->v_pointer; } } /** * _pygi_argument_array_length_marshal: * @length_arg_index: Index of length argument in the callables args list. * @user_data1: (type Array(GValue)): Array of GValue arguments to retrieve length * @user_data2: (type GICallableInfo): Callable info to get the argument from. * * Generic marshalling policy for array length arguments in callables. * * Returns: The length of the array or -1 on failure. */ gssize _pygi_argument_array_length_marshal (gsize length_arg_index, void *user_data1, void *user_data2) { GIArgInfo length_arg_info; GITypeInfo length_type_info; GIArgument length_arg; gssize array_len = -1; GValue *values = (GValue *)user_data1; GICallableInfo *callable_info = (GICallableInfo *)user_data2; g_callable_info_load_arg (callable_info, (gint)length_arg_index, &length_arg_info); g_arg_info_load_type (&length_arg_info, &length_type_info); length_arg = _pygi_argument_from_g_value (&(values[length_arg_index]), &length_type_info); if (!pygi_argument_to_gssize (&length_arg, g_type_info_get_tag (&length_type_info), &array_len)) { return -1; } return array_len; } /** * _pygi_argument_to_array * @arg: The argument to convert * @array_length_policy: Closure for marshalling the array length argument when needed. * @user_data1: Generic user data passed to the array_length_policy. * @user_data2: Generic user data passed to the array_length_policy. * @type_info: The type info for @arg * @out_free_array: A return location for a gboolean that indicates whether * or not the wrapped GArray should be freed * * Make sure an array type argument is wrapped in a GArray. * * Note: This method can *not* be folded into _pygi_argument_to_object() because * arrays are special in the sense that they might require access to @args in * order to get the length. * * Returns: A GArray wrapping @arg. If @out_free_array has been set to TRUE then * free the array with g_array_free() without freeing the data members. * Otherwise don't free the array. */ GArray * _pygi_argument_to_array (GIArgument *arg, PyGIArgArrayLengthPolicy array_length_policy, void *user_data1, void *user_data2, GITypeInfo *type_info, gboolean *out_free_array) { GITypeInfo *item_type_info; gboolean is_zero_terminated; gsize item_size; gssize length; GArray *g_array; g_return_val_if_fail (g_type_info_get_tag (type_info) == GI_TYPE_TAG_ARRAY, NULL); if (arg->v_pointer == NULL) { return NULL; } switch (g_type_info_get_array_type (type_info)) { case GI_ARRAY_TYPE_C: is_zero_terminated = g_type_info_is_zero_terminated (type_info); item_type_info = g_type_info_get_param_type (type_info, 0); item_size = _pygi_g_type_info_size (item_type_info); g_base_info_unref ( (GIBaseInfo *) item_type_info); if (is_zero_terminated) { length = g_strv_length (arg->v_pointer); } else { length = g_type_info_get_array_fixed_size (type_info); if (length < 0) { gint length_arg_pos; if (G_UNLIKELY (array_length_policy == NULL)) { g_critical ("Unable to determine array length for %p", arg->v_pointer); g_array = g_array_new (is_zero_terminated, FALSE, (guint)item_size); *out_free_array = TRUE; return g_array; } length_arg_pos = g_type_info_get_array_length (type_info); g_assert (length_arg_pos >= 0); length = array_length_policy (length_arg_pos, user_data1, user_data2); if (length < 0) { return NULL; } } } g_assert (length >= 0); g_array = g_array_new (is_zero_terminated, FALSE, (guint)item_size); g_free (g_array->data); g_array->data = arg->v_pointer; g_array->len = (guint)length; *out_free_array = TRUE; break; case GI_ARRAY_TYPE_ARRAY: case GI_ARRAY_TYPE_BYTE_ARRAY: /* Note: GByteArray is really just a GArray */ g_array = arg->v_pointer; *out_free_array = FALSE; break; case GI_ARRAY_TYPE_PTR_ARRAY: { GPtrArray *ptr_array = (GPtrArray*) arg->v_pointer; g_array = g_array_sized_new (FALSE, FALSE, sizeof(gpointer), ptr_array->len); g_array->data = (char*) ptr_array->pdata; g_array->len = ptr_array->len; *out_free_array = TRUE; break; } default: g_critical ("Unexpected array type %u", g_type_info_get_array_type (type_info)); g_array = NULL; break; } return g_array; } GIArgument _pygi_argument_from_object (PyObject *object, GITypeInfo *type_info, GITransfer transfer) { GIArgument arg; GITypeTag type_tag; gpointer cleanup_data = NULL; memset(&arg, 0, sizeof(GIArgument)); type_tag = g_type_info_get_tag (type_info); switch (type_tag) { case GI_TYPE_TAG_ARRAY: { Py_ssize_t py_length; guint length, i; gboolean is_zero_terminated; GITypeInfo *item_type_info; gsize item_size; GArray *array; GITransfer item_transfer; if (object == Py_None) { arg.v_pointer = NULL; break; } /* Note, strings are sequences, but we cannot accept them here */ if (!PySequence_Check (object) || PyUnicode_Check (object)) { PyErr_SetString (PyExc_TypeError, "expected sequence"); break; } py_length = PySequence_Length (object); if (py_length < 0) break; if (!pygi_guint_from_pyssize (py_length, &length)) break; is_zero_terminated = g_type_info_is_zero_terminated (type_info); item_type_info = g_type_info_get_param_type (type_info, 0); /* we handle arrays that are really strings specially, see below */ if (g_type_info_get_tag (item_type_info) == GI_TYPE_TAG_UINT8) item_size = 1; else item_size = sizeof (GIArgument); array = g_array_sized_new (is_zero_terminated, FALSE, (guint)item_size, length); if (array == NULL) { g_base_info_unref ( (GIBaseInfo *) item_type_info); PyErr_NoMemory(); break; } if (g_type_info_get_tag (item_type_info) == GI_TYPE_TAG_UINT8 && PyBytes_Check (object)) { memcpy(array->data, PyBytes_AsString (object), length); array->len = length; goto array_success; } item_transfer = transfer == GI_TRANSFER_CONTAINER ? GI_TRANSFER_NOTHING : transfer; for (i = 0; i < length; i++) { PyObject *py_item; GIArgument item; py_item = PySequence_GetItem (object, i); if (py_item == NULL) { goto array_item_error; } item = _pygi_argument_from_object (py_item, item_type_info, item_transfer); Py_DECREF (py_item); if (PyErr_Occurred()) { goto array_item_error; } g_array_insert_val (array, i, item); continue; array_item_error: /* Free everything we have converted so far. */ _pygi_argument_release ( (GIArgument *) &array, type_info, GI_TRANSFER_NOTHING, GI_DIRECTION_IN); array = NULL; _PyGI_ERROR_PREFIX ("Item %u: ", i); break; } array_success: arg.v_pointer = array; g_base_info_unref ( (GIBaseInfo *) item_type_info); break; } case GI_TYPE_TAG_INTERFACE: { GIBaseInfo *info; GIInfoType info_type; info = g_type_info_get_interface (type_info); info_type = g_base_info_get_type (info); switch (info_type) { case GI_INFO_TYPE_CALLBACK: /* This should be handled in invoke() */ g_assert_not_reached(); break; case GI_INFO_TYPE_BOXED: case GI_INFO_TYPE_STRUCT: case GI_INFO_TYPE_UNION: { GType g_type; PyObject *py_type; gboolean is_foreign = (info_type == GI_INFO_TYPE_STRUCT) && (g_struct_info_is_foreign ((GIStructInfo *) info)); g_type = g_registered_type_info_get_g_type ( (GIRegisteredTypeInfo *) info); py_type = pygi_type_import_by_gi_info ( (GIBaseInfo *) info); /* Note for G_TYPE_VALUE g_type: * This will currently leak the GValue that is allocated and * stashed in arg.v_pointer. Out argument marshaling for caller * allocated GValues already pass in memory for the GValue. * Further re-factoring is needed to fix this leak. * See: https://bugzilla.gnome.org/show_bug.cgi?id=693405 */ pygi_arg_struct_from_py_marshal (object, &arg, NULL, /*arg_name*/ info, /*interface_info*/ g_type, py_type, transfer, FALSE, /*copy_reference*/ is_foreign, g_type_info_is_pointer (type_info)); Py_DECREF (py_type); break; } case GI_INFO_TYPE_ENUM: case GI_INFO_TYPE_FLAGS: { if (!pygi_gint_from_py (object, &arg.v_int)) break; break; } case GI_INFO_TYPE_INTERFACE: case GI_INFO_TYPE_OBJECT: /* An error within this call will result in a NULL arg */ pygi_arg_gobject_out_arg_from_py (object, &arg, transfer); break; default: g_assert_not_reached(); } g_base_info_unref (info); break; } case GI_TYPE_TAG_GLIST: case GI_TYPE_TAG_GSLIST: { Py_ssize_t length; GITypeInfo *item_type_info; GSList *list = NULL; GITransfer item_transfer; Py_ssize_t i; if (object == Py_None) { arg.v_pointer = NULL; break; } length = PySequence_Length (object); if (length < 0) { break; } item_type_info = g_type_info_get_param_type (type_info, 0); g_assert (item_type_info != NULL); item_transfer = transfer == GI_TRANSFER_CONTAINER ? GI_TRANSFER_NOTHING : transfer; for (i = length - 1; i >= 0; i--) { PyObject *py_item; GIArgument item; py_item = PySequence_GetItem (object, i); if (py_item == NULL) { goto list_item_error; } item = _pygi_argument_from_object (py_item, item_type_info, item_transfer); Py_DECREF (py_item); if (PyErr_Occurred()) { goto list_item_error; } if (type_tag == GI_TYPE_TAG_GLIST) { list = (GSList *) g_list_prepend ( (GList *) list, item.v_pointer); } else { list = g_slist_prepend (list, item.v_pointer); } continue; list_item_error: /* Free everything we have converted so far. */ _pygi_argument_release ( (GIArgument *) &list, type_info, GI_TRANSFER_NOTHING, GI_DIRECTION_IN); list = NULL; _PyGI_ERROR_PREFIX ("Item %zd: ", i); break; } arg.v_pointer = list; g_base_info_unref ( (GIBaseInfo *) item_type_info); break; } case GI_TYPE_TAG_GHASH: { Py_ssize_t length; PyObject *keys; PyObject *values; GITypeInfo *key_type_info; GITypeInfo *value_type_info; GITypeTag key_type_tag; GHashFunc hash_func; GEqualFunc equal_func; GHashTable *hash_table; GITransfer item_transfer; Py_ssize_t i; if (object == Py_None) { arg.v_pointer = NULL; break; } length = PyMapping_Length (object); if (length < 0) { break; } keys = PyMapping_Keys (object); if (keys == NULL) { break; } values = PyMapping_Values (object); if (values == NULL) { Py_DECREF (keys); break; } key_type_info = g_type_info_get_param_type (type_info, 0); g_assert (key_type_info != NULL); value_type_info = g_type_info_get_param_type (type_info, 1); g_assert (value_type_info != NULL); key_type_tag = g_type_info_get_tag (key_type_info); switch (key_type_tag) { case GI_TYPE_TAG_UTF8: case GI_TYPE_TAG_FILENAME: hash_func = g_str_hash; equal_func = g_str_equal; break; default: hash_func = NULL; equal_func = NULL; } hash_table = g_hash_table_new (hash_func, equal_func); if (hash_table == NULL) { PyErr_NoMemory(); goto hash_table_release; } item_transfer = transfer == GI_TRANSFER_CONTAINER ? GI_TRANSFER_NOTHING : transfer; for (i = 0; i < length; i++) { PyObject *py_key; PyObject *py_value; GIArgument key; GIArgument value; py_key = PyList_GET_ITEM (keys, i); py_value = PyList_GET_ITEM (values, i); key = _pygi_argument_from_object (py_key, key_type_info, item_transfer); if (PyErr_Occurred()) { goto hash_table_item_error; } value = _pygi_argument_from_object (py_value, value_type_info, item_transfer); if (PyErr_Occurred()) { _pygi_argument_release (&key, type_info, GI_TRANSFER_NOTHING, GI_DIRECTION_IN); goto hash_table_item_error; } g_hash_table_insert (hash_table, key.v_pointer, _pygi_arg_to_hash_pointer (&value, value_type_info)); continue; hash_table_item_error: /* Free everything we have converted so far. */ _pygi_argument_release ( (GIArgument *) &hash_table, type_info, GI_TRANSFER_NOTHING, GI_DIRECTION_IN); hash_table = NULL; _PyGI_ERROR_PREFIX ("Item %zd: ", i); break; } arg.v_pointer = hash_table; hash_table_release: g_base_info_unref ( (GIBaseInfo *) key_type_info); g_base_info_unref ( (GIBaseInfo *) value_type_info); Py_DECREF (keys); Py_DECREF (values); break; } case GI_TYPE_TAG_ERROR: PyErr_SetString (PyExc_NotImplementedError, "error marshalling is not supported yet"); /* TODO */ break; default: /* Ignores cleanup data for now. */ pygi_marshal_from_py_basic_type (object, &arg, type_tag, transfer, &cleanup_data); break; } return arg; } /** * _pygi_argument_to_object: * @arg: The argument to convert to an object. * @type_info: Type info for @arg * @transfer: * * If the argument is of type array, it must be encoded in a GArray, by calling * _pygi_argument_to_array(). This logic can not be folded into this method * as determining array lengths may require access to method call arguments. * * Returns: A PyObject representing @arg */ PyObject * _pygi_argument_to_object (GIArgument *arg, GITypeInfo *type_info, GITransfer transfer) { GITypeTag type_tag; PyObject *object = NULL; type_tag = g_type_info_get_tag (type_info); switch (type_tag) { case GI_TYPE_TAG_VOID: { if (g_type_info_is_pointer (type_info)) { g_warn_if_fail (transfer == GI_TRANSFER_NOTHING); object = PyLong_FromVoidPtr (arg->v_pointer); } break; } case GI_TYPE_TAG_ARRAY: { /* Arrays are assumed to be packed in a GArray */ GArray *array; GITypeInfo *item_type_info; GITypeTag item_type_tag; GITransfer item_transfer; gsize i, item_size; if (arg->v_pointer == NULL) return PyList_New (0); item_type_info = g_type_info_get_param_type (type_info, 0); g_assert (item_type_info != NULL); item_type_tag = g_type_info_get_tag (item_type_info); item_transfer = transfer == GI_TRANSFER_CONTAINER ? GI_TRANSFER_NOTHING : transfer; array = arg->v_pointer; item_size = g_array_get_element_size (array); if (G_UNLIKELY (item_size > sizeof(GIArgument))) { g_critical ("Stack overflow protection. " "Can't copy array element into GIArgument."); return PyList_New (0); } if (item_type_tag == GI_TYPE_TAG_UINT8) { /* Return as a byte array */ object = PyBytes_FromStringAndSize (array->data, array->len); } else { object = PyList_New (array->len); if (object == NULL) { g_critical ("Failure to allocate array for %u items", array->len); g_base_info_unref ( (GIBaseInfo *) item_type_info); break; } for (i = 0; i < array->len; i++) { GIArgument item = { 0 }; PyObject *py_item; memcpy (&item, array->data + i * item_size, item_size); py_item = _pygi_argument_to_object (&item, item_type_info, item_transfer); if (py_item == NULL) { Py_CLEAR (object); _PyGI_ERROR_PREFIX ("Item %zu: ", i); break; } PyList_SET_ITEM (object, i, py_item); } } g_base_info_unref ( (GIBaseInfo *) item_type_info); break; } case GI_TYPE_TAG_INTERFACE: { GIBaseInfo *info; GIInfoType info_type; info = g_type_info_get_interface (type_info); info_type = g_base_info_get_type (info); switch (info_type) { case GI_INFO_TYPE_CALLBACK: { g_assert_not_reached(); } case GI_INFO_TYPE_BOXED: case GI_INFO_TYPE_STRUCT: case GI_INFO_TYPE_UNION: { PyObject *py_type; GType g_type = g_registered_type_info_get_g_type ( (GIRegisteredTypeInfo *) info); gboolean is_foreign = (info_type == GI_INFO_TYPE_STRUCT) && (g_struct_info_is_foreign ((GIStructInfo *) info)); /* Special case variant and none to force loading from py module. */ if (g_type == G_TYPE_VARIANT || g_type == G_TYPE_NONE) { py_type = pygi_type_import_by_gi_info (info); } else { py_type = pygi_type_get_from_g_type (g_type); } object = pygi_arg_struct_to_py_marshal (arg, info, /*interface_info*/ g_type, py_type, transfer, FALSE, /*is_allocated*/ is_foreign); Py_XDECREF (py_type); break; } case GI_INFO_TYPE_ENUM: case GI_INFO_TYPE_FLAGS: { GType type; type = g_registered_type_info_get_g_type ( (GIRegisteredTypeInfo *) info); if (type == G_TYPE_NONE) { /* An enum with a GType of None is an enum without GType */ PyObject *py_type = pygi_type_import_by_gi_info (info); PyObject *py_args = NULL; if (!py_type) return NULL; py_args = PyTuple_New (1); if (PyTuple_SetItem (py_args, 0, pygi_gint_to_py (arg->v_int)) != 0) { Py_DECREF (py_args); Py_DECREF (py_type); return NULL; } object = PyObject_CallFunction (py_type, "i", arg->v_int); Py_DECREF (py_args); Py_DECREF (py_type); } else if (info_type == GI_INFO_TYPE_ENUM) { object = pyg_enum_from_gtype (type, arg->v_int); } else { object = pyg_flags_from_gtype (type, arg->v_uint); } break; } case GI_INFO_TYPE_INTERFACE: case GI_INFO_TYPE_OBJECT: object = pygi_arg_gobject_to_py_called_from_c (arg, transfer); break; default: g_assert_not_reached(); } g_base_info_unref (info); break; } case GI_TYPE_TAG_GLIST: case GI_TYPE_TAG_GSLIST: { GSList *list; gsize length; GITypeInfo *item_type_info; GITransfer item_transfer; gsize i; list = arg->v_pointer; length = g_slist_length (list); object = PyList_New (length); if (object == NULL) { break; } item_type_info = g_type_info_get_param_type (type_info, 0); g_assert (item_type_info != NULL); item_transfer = transfer == GI_TRANSFER_CONTAINER ? GI_TRANSFER_NOTHING : transfer; for (i = 0; list != NULL; list = g_slist_next (list), i++) { GIArgument item; PyObject *py_item; item.v_pointer = list->data; py_item = _pygi_argument_to_object (&item, item_type_info, item_transfer); if (py_item == NULL) { Py_CLEAR (object); _PyGI_ERROR_PREFIX ("Item %zu: ", i); break; } PyList_SET_ITEM (object, i, py_item); } g_base_info_unref ( (GIBaseInfo *) item_type_info); break; } case GI_TYPE_TAG_GHASH: { GITypeInfo *key_type_info; GITypeInfo *value_type_info; GITransfer item_transfer; GHashTableIter hash_table_iter; GIArgument key; GIArgument value; if (arg->v_pointer == NULL) { object = Py_None; Py_INCREF (object); break; } object = PyDict_New(); if (object == NULL) { break; } key_type_info = g_type_info_get_param_type (type_info, 0); g_assert (key_type_info != NULL); g_assert (g_type_info_get_tag (key_type_info) != GI_TYPE_TAG_VOID); value_type_info = g_type_info_get_param_type (type_info, 1); g_assert (value_type_info != NULL); g_assert (g_type_info_get_tag (value_type_info) != GI_TYPE_TAG_VOID); item_transfer = transfer == GI_TRANSFER_CONTAINER ? GI_TRANSFER_NOTHING : transfer; g_hash_table_iter_init (&hash_table_iter, (GHashTable *) arg->v_pointer); while (g_hash_table_iter_next (&hash_table_iter, &key.v_pointer, &value.v_pointer)) { PyObject *py_key; PyObject *py_value; int retval; py_key = _pygi_argument_to_object (&key, key_type_info, item_transfer); if (py_key == NULL) { break; } _pygi_hash_pointer_to_arg (&value, value_type_info); py_value = _pygi_argument_to_object (&value, value_type_info, item_transfer); if (py_value == NULL) { Py_DECREF (py_key); break; } retval = PyDict_SetItem (object, py_key, py_value); Py_DECREF (py_key); Py_DECREF (py_value); if (retval < 0) { Py_CLEAR (object); break; } } g_base_info_unref ( (GIBaseInfo *) key_type_info); g_base_info_unref ( (GIBaseInfo *) value_type_info); break; } case GI_TYPE_TAG_ERROR: { GError *error = (GError *) arg->v_pointer; if (error != NULL && transfer == GI_TRANSFER_NOTHING) { /* If we have not been transferred the ownership we must copy * the error, because pygi_error_check() is going to free it. */ error = g_error_copy (error); } if (pygi_error_check (&error)) { PyObject *err_type; PyObject *err_value; PyObject *err_trace; PyErr_Fetch (&err_type, &err_value, &err_trace); Py_XDECREF (err_type); Py_XDECREF (err_trace); object = err_value; } else { object = Py_None; Py_INCREF (object); break; } break; } default: { object = pygi_marshal_to_py_basic_type (arg, type_tag, transfer); } } return object; } void _pygi_argument_release (GIArgument *arg, GITypeInfo *type_info, GITransfer transfer, GIDirection direction) { GITypeTag type_tag; gboolean is_out = (direction == GI_DIRECTION_OUT || direction == GI_DIRECTION_INOUT); type_tag = g_type_info_get_tag (type_info); switch (type_tag) { case GI_TYPE_TAG_VOID: /* Don't do anything, it's transparent to the C side */ break; case GI_TYPE_TAG_BOOLEAN: case GI_TYPE_TAG_INT8: case GI_TYPE_TAG_UINT8: case GI_TYPE_TAG_INT16: case GI_TYPE_TAG_UINT16: case GI_TYPE_TAG_INT32: case GI_TYPE_TAG_UINT32: case GI_TYPE_TAG_INT64: case GI_TYPE_TAG_UINT64: case GI_TYPE_TAG_FLOAT: case GI_TYPE_TAG_DOUBLE: case GI_TYPE_TAG_GTYPE: case GI_TYPE_TAG_UNICHAR: break; case GI_TYPE_TAG_FILENAME: case GI_TYPE_TAG_UTF8: /* With allow-none support the string could be NULL */ if ((arg->v_string != NULL && (direction == GI_DIRECTION_IN && transfer == GI_TRANSFER_NOTHING)) || (direction == GI_DIRECTION_OUT && transfer == GI_TRANSFER_EVERYTHING)) { g_free (arg->v_string); } break; case GI_TYPE_TAG_ARRAY: { GArray *array; gsize i; if (arg->v_pointer == NULL) { return; } array = arg->v_pointer; if ( (direction == GI_DIRECTION_IN && transfer != GI_TRANSFER_EVERYTHING) || (direction == GI_DIRECTION_OUT && transfer == GI_TRANSFER_EVERYTHING)) { GITypeInfo *item_type_info; GITransfer item_transfer; item_type_info = g_type_info_get_param_type (type_info, 0); item_transfer = direction == GI_DIRECTION_IN ? GI_TRANSFER_NOTHING : GI_TRANSFER_EVERYTHING; /* Free the items */ for (i = 0; i < array->len; i++) { GIArgument item; memcpy (&item, array->data + (g_array_get_element_size (array) * i), sizeof (GIArgument)); _pygi_argument_release (&item, item_type_info, item_transfer, direction); } g_base_info_unref ( (GIBaseInfo *) item_type_info); } if ( (direction == GI_DIRECTION_IN && transfer == GI_TRANSFER_NOTHING) || (direction == GI_DIRECTION_OUT && transfer != GI_TRANSFER_NOTHING)) { g_array_free (array, TRUE); } break; } case GI_TYPE_TAG_INTERFACE: { GIBaseInfo *info; GIInfoType info_type; info = g_type_info_get_interface (type_info); info_type = g_base_info_get_type (info); switch (info_type) { case GI_INFO_TYPE_CALLBACK: /* TODO */ break; case GI_INFO_TYPE_BOXED: case GI_INFO_TYPE_STRUCT: case GI_INFO_TYPE_UNION: { GType type; if (arg->v_pointer == NULL) { return; } type = g_registered_type_info_get_g_type ( (GIRegisteredTypeInfo *) info); if (g_type_is_a (type, G_TYPE_VALUE)) { GValue *value; value = arg->v_pointer; if ( (direction == GI_DIRECTION_IN && transfer != GI_TRANSFER_EVERYTHING) || (direction == GI_DIRECTION_OUT && transfer == GI_TRANSFER_EVERYTHING)) { g_value_unset (value); } if ( (direction == GI_DIRECTION_IN && transfer == GI_TRANSFER_NOTHING) || (direction == GI_DIRECTION_OUT && transfer != GI_TRANSFER_NOTHING)) { g_slice_free (GValue, value); } } else if (g_type_is_a (type, G_TYPE_CLOSURE)) { if (direction == GI_DIRECTION_IN && transfer == GI_TRANSFER_NOTHING) { g_closure_unref (arg->v_pointer); } } else if (info_type == GI_INFO_TYPE_STRUCT && g_struct_info_is_foreign ((GIStructInfo*) info)) { if (direction == GI_DIRECTION_OUT && transfer == GI_TRANSFER_EVERYTHING) { pygi_struct_foreign_release (info, arg->v_pointer); } } else if (g_type_is_a (type, G_TYPE_BOXED)) { } else if (g_type_is_a (type, G_TYPE_POINTER) || type == G_TYPE_NONE) { g_warn_if_fail (!g_type_info_is_pointer (type_info) || transfer == GI_TRANSFER_NOTHING); } break; } case GI_INFO_TYPE_ENUM: case GI_INFO_TYPE_FLAGS: break; case GI_INFO_TYPE_INTERFACE: case GI_INFO_TYPE_OBJECT: if (arg->v_pointer == NULL) { return; } if (is_out && transfer == GI_TRANSFER_EVERYTHING) { g_object_unref (arg->v_pointer); } break; default: g_assert_not_reached(); } g_base_info_unref (info); break; } case GI_TYPE_TAG_GLIST: case GI_TYPE_TAG_GSLIST: { GSList *list; if (arg->v_pointer == NULL) { return; } list = arg->v_pointer; if ( (direction == GI_DIRECTION_IN && transfer != GI_TRANSFER_EVERYTHING) || (direction == GI_DIRECTION_OUT && transfer == GI_TRANSFER_EVERYTHING)) { GITypeInfo *item_type_info; GITransfer item_transfer; GSList *item; item_type_info = g_type_info_get_param_type (type_info, 0); g_assert (item_type_info != NULL); item_transfer = direction == GI_DIRECTION_IN ? GI_TRANSFER_NOTHING : GI_TRANSFER_EVERYTHING; /* Free the items */ for (item = list; item != NULL; item = g_slist_next (item)) { _pygi_argument_release ( (GIArgument *) &item->data, item_type_info, item_transfer, direction); } g_base_info_unref ( (GIBaseInfo *) item_type_info); } if ( (direction == GI_DIRECTION_IN && transfer == GI_TRANSFER_NOTHING) || (direction == GI_DIRECTION_OUT && transfer != GI_TRANSFER_NOTHING)) { if (type_tag == GI_TYPE_TAG_GLIST) { g_list_free ( (GList *) list); } else { /* type_tag == GI_TYPE_TAG_GSLIST */ g_slist_free (list); } } break; } case GI_TYPE_TAG_GHASH: { GHashTable *hash_table; if (arg->v_pointer == NULL) { return; } hash_table = arg->v_pointer; if (direction == GI_DIRECTION_IN && transfer != GI_TRANSFER_EVERYTHING) { /* We created the table without a destroy function, so keys and * values need to be released. */ GITypeInfo *key_type_info; GITypeInfo *value_type_info; GITransfer item_transfer; GHashTableIter hash_table_iter; gpointer key; gpointer value; key_type_info = g_type_info_get_param_type (type_info, 0); g_assert (key_type_info != NULL); value_type_info = g_type_info_get_param_type (type_info, 1); g_assert (value_type_info != NULL); if (direction == GI_DIRECTION_IN) { item_transfer = GI_TRANSFER_NOTHING; } else { item_transfer = GI_TRANSFER_EVERYTHING; } g_hash_table_iter_init (&hash_table_iter, hash_table); while (g_hash_table_iter_next (&hash_table_iter, &key, &value)) { _pygi_argument_release ( (GIArgument *) &key, key_type_info, item_transfer, direction); _pygi_argument_release ( (GIArgument *) &value, value_type_info, item_transfer, direction); } g_base_info_unref ( (GIBaseInfo *) key_type_info); g_base_info_unref ( (GIBaseInfo *) value_type_info); } else if (direction == GI_DIRECTION_OUT && transfer == GI_TRANSFER_CONTAINER) { /* Be careful to avoid keys and values being freed if the * callee gave a destroy function. */ g_hash_table_steal_all (hash_table); } if ( (direction == GI_DIRECTION_IN && transfer == GI_TRANSFER_NOTHING) || (direction == GI_DIRECTION_OUT && transfer != GI_TRANSFER_NOTHING)) { g_hash_table_unref (hash_table); } break; } case GI_TYPE_TAG_ERROR: { GError *error; if (arg->v_pointer == NULL) { return; } error = * (GError **) arg->v_pointer; if (error != NULL) { g_error_free (error); } g_slice_free (GError *, arg->v_pointer); break; } default: break; } }