/* -*- Mode: C; c-basic-offset: 4 -*- * vim: tabstop=4 shiftwidth=4 expandtab * * Copyright (C) 2011 John (J5) Palmieri * Copyright (C) 2014 Simon Feltman * * 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 "pygi-enum-marshal.h" #include "pygi-private.h" static gboolean gi_argument_from_c_long (GIArgument *arg_out, long c_long_in, GITypeTag type_tag) { switch (type_tag) { case GI_TYPE_TAG_INT8: arg_out->v_int8 = c_long_in; return TRUE; case GI_TYPE_TAG_UINT8: arg_out->v_uint8 = c_long_in; return TRUE; case GI_TYPE_TAG_INT16: arg_out->v_int16 = c_long_in; return TRUE; case GI_TYPE_TAG_UINT16: arg_out->v_uint16 = c_long_in; return TRUE; case GI_TYPE_TAG_INT32: arg_out->v_int32 = c_long_in; return TRUE; case GI_TYPE_TAG_UINT32: arg_out->v_uint32 = c_long_in; return TRUE; case GI_TYPE_TAG_INT64: arg_out->v_int64 = c_long_in; return TRUE; case GI_TYPE_TAG_UINT64: arg_out->v_uint64 = c_long_in; return TRUE; default: PyErr_Format (PyExc_TypeError, "Unable to marshal C long %ld to %s", c_long_in, g_type_tag_to_string (type_tag)); return FALSE; } } static gboolean gi_argument_to_c_long (GIArgument *arg_in, long *c_long_out, GITypeTag type_tag) { switch (type_tag) { case GI_TYPE_TAG_INT8: *c_long_out = arg_in->v_int8; return TRUE; case GI_TYPE_TAG_UINT8: *c_long_out = arg_in->v_uint8; return TRUE; case GI_TYPE_TAG_INT16: *c_long_out = arg_in->v_int16; return TRUE; case GI_TYPE_TAG_UINT16: *c_long_out = arg_in->v_uint16; return TRUE; case GI_TYPE_TAG_INT32: *c_long_out = arg_in->v_int32; return TRUE; case GI_TYPE_TAG_UINT32: *c_long_out = arg_in->v_uint32; return TRUE; case GI_TYPE_TAG_INT64: *c_long_out = arg_in->v_int64; return TRUE; case GI_TYPE_TAG_UINT64: *c_long_out = arg_in->v_uint64; return TRUE; default: PyErr_Format (PyExc_TypeError, "Unable to marshal %s to C long", g_type_tag_to_string (type_tag)); return FALSE; } } static gboolean _pygi_marshal_from_py_interface_enum (PyGIInvokeState *state, PyGICallableCache *callable_cache, PyGIArgCache *arg_cache, PyObject *py_arg, GIArgument *arg, gpointer *cleanup_data) { PyObject *py_long; long c_long; gint is_instance; PyGIInterfaceCache *iface_cache = (PyGIInterfaceCache *)arg_cache; GIBaseInfo *interface = NULL; is_instance = PyObject_IsInstance (py_arg, iface_cache->py_type); py_long = PYGLIB_PyNumber_Long (py_arg); if (py_long == NULL) { PyErr_Clear(); goto err; } c_long = PYGLIB_PyLong_AsLong (py_long); Py_DECREF (py_long); /* Write c_long into arg */ interface = g_type_info_get_interface (arg_cache->type_info); assert(g_base_info_get_type (interface) == GI_INFO_TYPE_ENUM); if (!gi_argument_from_c_long(arg, c_long, g_enum_info_get_storage_type ((GIEnumInfo *)interface))) { g_assert_not_reached(); g_base_info_unref (interface); return FALSE; } /* If this is not an instance of the Enum type that we want * we need to check if the value is equivilant to one of the * Enum's memebers */ if (!is_instance) { int i; gboolean is_found = FALSE; for (i = 0; i < g_enum_info_get_n_values (iface_cache->interface_info); i++) { GIValueInfo *value_info = g_enum_info_get_value (iface_cache->interface_info, i); glong enum_value = g_value_info_get_value (value_info); g_base_info_unref ( (GIBaseInfo *)value_info); if (c_long == enum_value) { is_found = TRUE; break; } } if (!is_found) goto err; } g_base_info_unref (interface); return TRUE; err: if (interface) g_base_info_unref (interface); PyErr_Format (PyExc_TypeError, "Expected a %s, but got %s", iface_cache->type_name, py_arg->ob_type->tp_name); return FALSE; } static gboolean _pygi_marshal_from_py_interface_flags (PyGIInvokeState *state, PyGICallableCache *callable_cache, PyGIArgCache *arg_cache, PyObject *py_arg, GIArgument *arg, gpointer *cleanup_data) { PyObject *py_long; long c_long; gint is_instance; PyGIInterfaceCache *iface_cache = (PyGIInterfaceCache *)arg_cache; GIBaseInfo *interface; is_instance = PyObject_IsInstance (py_arg, iface_cache->py_type); py_long = PYGLIB_PyNumber_Long (py_arg); if (py_long == NULL) { PyErr_Clear (); goto err; } c_long = PYGLIB_PyLong_AsLong (py_long); Py_DECREF (py_long); /* only 0 or argument of type Flag is allowed */ if (!is_instance && c_long != 0) goto err; /* Write c_long into arg */ interface = g_type_info_get_interface (arg_cache->type_info); g_assert (g_base_info_get_type (interface) == GI_INFO_TYPE_FLAGS); if (!gi_argument_from_c_long(arg, c_long, g_enum_info_get_storage_type ((GIEnumInfo *)interface))) { g_base_info_unref (interface); return FALSE; } g_base_info_unref (interface); return TRUE; err: PyErr_Format (PyExc_TypeError, "Expected a %s, but got %s", iface_cache->type_name, py_arg->ob_type->tp_name); return FALSE; } static PyObject * _pygi_marshal_to_py_interface_enum (PyGIInvokeState *state, PyGICallableCache *callable_cache, PyGIArgCache *arg_cache, GIArgument *arg) { PyObject *py_obj = NULL; PyGIInterfaceCache *iface_cache = (PyGIInterfaceCache *)arg_cache; GIBaseInfo *interface; long c_long; interface = g_type_info_get_interface (arg_cache->type_info); g_assert (g_base_info_get_type (interface) == GI_INFO_TYPE_ENUM); if (!gi_argument_to_c_long(arg, &c_long, g_enum_info_get_storage_type ((GIEnumInfo *)interface))) { return NULL; } if (iface_cache->g_type == G_TYPE_NONE) { py_obj = PyObject_CallFunction (iface_cache->py_type, "l", c_long); } else { py_obj = pyg_enum_from_gtype (iface_cache->g_type, c_long); } g_base_info_unref (interface); return py_obj; } static PyObject * _pygi_marshal_to_py_interface_flags (PyGIInvokeState *state, PyGICallableCache *callable_cache, PyGIArgCache *arg_cache, GIArgument *arg) { PyObject *py_obj = NULL; PyGIInterfaceCache *iface_cache = (PyGIInterfaceCache *)arg_cache; GIBaseInfo *interface; long c_long; interface = g_type_info_get_interface (arg_cache->type_info); g_assert (g_base_info_get_type (interface) == GI_INFO_TYPE_FLAGS); if (!gi_argument_to_c_long(arg, &c_long, g_enum_info_get_storage_type ((GIEnumInfo *)interface))) { g_base_info_unref (interface); return NULL; } g_base_info_unref (interface); if (iface_cache->g_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 (iface_cache->interface_info); PyObject *py_args = NULL; if (!py_type) return NULL; py_args = PyTuple_New (1); if (PyTuple_SetItem (py_args, 0, PyLong_FromLong (c_long)) != 0) { Py_DECREF (py_args); Py_DECREF (py_type); return NULL; } py_obj = PyObject_CallFunction (py_type, "l", c_long); Py_DECREF (py_args); Py_DECREF (py_type); } else { py_obj = pyg_flags_from_gtype (iface_cache->g_type, c_long); } return py_obj; } static gboolean pygi_arg_enum_setup_from_info (PyGIArgCache *arg_cache, GITypeInfo *type_info, GIArgInfo *arg_info, GITransfer transfer, PyGIDirection direction) { if (direction & PYGI_DIRECTION_FROM_PYTHON) arg_cache->from_py_marshaller = _pygi_marshal_from_py_interface_enum; if (direction & PYGI_DIRECTION_TO_PYTHON) arg_cache->to_py_marshaller = _pygi_marshal_to_py_interface_enum; return TRUE; } PyGIArgCache * pygi_arg_enum_new_from_info (GITypeInfo *type_info, GIArgInfo *arg_info, GITransfer transfer, PyGIDirection direction, GIInterfaceInfo *iface_info) { gboolean res = FALSE; PyGIArgCache *cache = NULL; cache = pygi_arg_interface_new_from_info (type_info, arg_info, transfer, direction, iface_info); if (cache == NULL) return NULL; res = pygi_arg_enum_setup_from_info (cache, type_info, arg_info, transfer, direction); if (res) { return cache; } else { pygi_arg_cache_free (cache); return NULL; } } static gboolean pygi_arg_flags_setup_from_info (PyGIArgCache *arg_cache, GITypeInfo *type_info, GIArgInfo *arg_info, GITransfer transfer, PyGIDirection direction) { if (direction & PYGI_DIRECTION_FROM_PYTHON) arg_cache->from_py_marshaller = _pygi_marshal_from_py_interface_flags; if (direction & PYGI_DIRECTION_TO_PYTHON) arg_cache->to_py_marshaller = _pygi_marshal_to_py_interface_flags; return TRUE; } PyGIArgCache * pygi_arg_flags_new_from_info (GITypeInfo *type_info, GIArgInfo *arg_info, GITransfer transfer, PyGIDirection direction, GIInterfaceInfo *iface_info) { gboolean res = FALSE; PyGIArgCache *cache = NULL; cache = pygi_arg_interface_new_from_info (type_info, arg_info, transfer, direction, iface_info); if (cache == NULL) return NULL; res = pygi_arg_flags_setup_from_info (cache, type_info, arg_info, transfer, direction); if (res) { return cache; } else { pygi_arg_cache_free (cache); return NULL; } }