lib: rename "self comp. input port message iter." -> "message iterator"
[babeltrace.git] / src / bindings / python / bt2 / bt2 / native_bt_message_iterator.i.h
1 /*
2 * The MIT License (MIT)
3 *
4 * Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 static
26 bt_message_iterator_create_from_message_iterator_status
27 bt_bt2_message_iterator_create_from_message_iterator(
28 bt_self_message_iterator *self_msg_iter,
29 bt_self_component_port_input *input_port,
30 bt_message_iterator **message_iterator)
31 {
32 bt_message_iterator_create_from_message_iterator_status
33 status;
34
35 status = bt_message_iterator_create_from_message_iterator(
36 self_msg_iter, input_port, message_iterator);
37
38 if (status != BT_MESSAGE_ITERATOR_CREATE_FROM_MESSAGE_ITERATOR_STATUS_OK) {
39 *message_iterator = NULL;
40 }
41
42 return status;
43 }
44
45 static
46 bt_message_iterator_create_from_sink_component_status
47 bt_bt2_message_iterator_create_from_sink_component(
48 bt_self_component_sink *self_comp,
49 bt_self_component_port_input *input_port,
50 bt_message_iterator **message_iterator)
51 {
52 bt_message_iterator_create_from_sink_component_status
53 status;
54
55 status = bt_message_iterator_create_from_sink_component(
56 self_comp, input_port, message_iterator);
57
58 if (status != BT_MESSAGE_ITERATOR_CREATE_FROM_SINK_COMPONENT_STATUS_OK) {
59 *message_iterator = NULL;
60 }
61
62 return status;
63 }
64
65 static PyObject *bt_bt2_get_user_component_from_user_msg_iter(
66 bt_self_message_iterator *self_message_iterator)
67 {
68 bt_self_component *self_component = bt_self_message_iterator_borrow_component(self_message_iterator);
69 PyObject *py_comp;
70
71 BT_ASSERT_DBG(self_component);
72 py_comp = bt_self_component_get_data(self_component);
73 BT_ASSERT_DBG(py_comp);
74
75 /* Return new reference */
76 Py_INCREF(py_comp);
77 return py_comp;
78 }
79
80 static inline
81 PyObject *create_pylist_from_messages(bt_message_array_const messages,
82 uint64_t message_count)
83 {
84 uint64_t i;
85 PyObject *py_msg_list = PyList_New(message_count);
86
87 BT_ASSERT(py_msg_list);
88
89 for (i = 0; i < message_count; i++) {
90 PyList_SET_ITEM(py_msg_list, i,
91 SWIG_NewPointerObj(SWIG_as_voidptr(messages[i]),
92 SWIGTYPE_p_bt_message, 0));
93 }
94
95 return py_msg_list;
96 }
97
98 static
99 PyObject *get_msg_range_common(bt_message_iterator_next_status status,
100 bt_message_array_const messages, uint64_t message_count)
101 {
102 PyObject *py_status;
103 PyObject *py_return_tuple;
104 PyObject *py_msg_list;
105
106 py_return_tuple = PyTuple_New(2);
107 BT_ASSERT(py_return_tuple);
108
109 /* Set tuple[0], status. */
110 py_status = SWIG_From_long_SS_long(status);
111 PyTuple_SET_ITEM(py_return_tuple, 0, py_status);
112
113 /* Set tuple[1], message list on success, None otherwise. */
114 if (status == __BT_FUNC_STATUS_OK) {
115 py_msg_list = create_pylist_from_messages(messages, message_count);
116 } else {
117 py_msg_list = Py_None;
118 Py_INCREF(py_msg_list);
119 }
120
121 PyTuple_SET_ITEM(py_return_tuple, 1, py_msg_list);
122
123 return py_return_tuple;
124 }
125
126 static PyObject *bt_bt2_self_component_port_input_get_msg_range(
127 bt_message_iterator *iter)
128 {
129 bt_message_array_const messages;
130 uint64_t message_count = 0;
131 bt_message_iterator_next_status status;
132
133 status = bt_message_iterator_next(iter,
134 &messages, &message_count);
135 return get_msg_range_common(status, messages, message_count);
136 }
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