1 #ifndef BABELTRACE_VALUES_H
2 #define BABELTRACE_VALUES_H
5 * Babeltrace - Value objects
7 * Copyright (c) 2015-2016 EfficiOS Inc. and Linux Foundation
8 * Copyright (c) 2015-2016 Philippe Proulx <pproulx@efficios.com>
10 * Permission is hereby granted, free of charge, to any person obtaining a copy
11 * of this software and associated documentation files (the "Software"), to deal
12 * in the Software without restriction, including without limitation the rights
13 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
14 * copies of the Software, and to permit persons to whom the Software is
15 * furnished to do so, subject to the following conditions:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
21 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
23 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
24 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
25 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <babeltrace/types.h>
42 enum bt_value_status
{
43 /// Operation canceled.
44 BT_VALUE_STATUS_CANCELED
= 125,
46 /// Cannot allocate memory.
47 BT_VALUE_STATUS_NOMEM
= -12,
50 BT_VALUE_STATUS_OK
= 0,
54 struct bt_private_value
;
56 extern struct bt_value
*bt_value_null
;
59 /// Null value object.
60 BT_VALUE_TYPE_NULL
= 0,
62 /// Boolean value object (holds #BT_TRUE or #BT_FALSE).
63 BT_VALUE_TYPE_BOOL
= 1,
65 /// Integer value object (holds a signed 64-bit integer raw value).
66 BT_VALUE_TYPE_INTEGER
= 2,
68 /// Floating point number value object (holds a \c double raw value).
69 BT_VALUE_TYPE_REAL
= 3,
71 /// String value object.
72 BT_VALUE_TYPE_STRING
= 4,
74 /// Array value object.
75 BT_VALUE_TYPE_ARRAY
= 5,
78 BT_VALUE_TYPE_MAP
= 6,
81 extern enum bt_value_type
bt_value_get_type(const struct bt_value
*object
);
84 bt_bool
bt_value_is_null(const struct bt_value
*object
)
86 return bt_value_get_type(object
) == BT_VALUE_TYPE_NULL
;
90 bt_bool
bt_value_is_bool(const struct bt_value
*object
)
92 return bt_value_get_type(object
) == BT_VALUE_TYPE_BOOL
;
96 bt_bool
bt_value_is_integer(const struct bt_value
*object
)
98 return bt_value_get_type(object
) == BT_VALUE_TYPE_INTEGER
;
102 bt_bool
bt_value_is_real(const struct bt_value
*object
)
104 return bt_value_get_type(object
) == BT_VALUE_TYPE_REAL
;
108 bt_bool
bt_value_is_string(const struct bt_value
*object
)
110 return bt_value_get_type(object
) == BT_VALUE_TYPE_STRING
;
114 bt_bool
bt_value_is_array(const struct bt_value
*object
)
116 return bt_value_get_type(object
) == BT_VALUE_TYPE_ARRAY
;
120 bt_bool
bt_value_is_map(const struct bt_value
*object
)
122 return bt_value_get_type(object
) == BT_VALUE_TYPE_MAP
;
125 extern enum bt_value_status
bt_value_copy(struct bt_private_value
**copy
,
126 const struct bt_value
*object
);
128 extern bt_bool
bt_value_compare(const struct bt_value
*object_a
,
129 const struct bt_value
*object_b
);
131 extern bt_bool
bt_value_bool_get(const struct bt_value
*bool_obj
);
133 extern int64_t bt_value_integer_get(const struct bt_value
*integer_obj
);
135 extern double bt_value_real_get(const struct bt_value
*real_obj
);
137 extern const char *bt_value_string_get(const struct bt_value
*string_obj
);
139 extern uint64_t bt_value_array_get_size(const struct bt_value
*array_obj
);
142 bt_bool
bt_value_array_is_empty(const struct bt_value
*array_obj
)
144 return bt_value_array_get_size(array_obj
) == 0;
147 extern struct bt_value
*bt_value_array_borrow_element_by_index(
148 const struct bt_value
*array_obj
, uint64_t index
);
150 extern uint64_t bt_value_map_get_size(const struct bt_value
*map_obj
);
153 bt_bool
bt_value_map_is_empty(const struct bt_value
*map_obj
)
155 return bt_value_map_get_size(map_obj
) == 0;
158 extern struct bt_value
*bt_value_map_borrow_entry_value(
159 const struct bt_value
*map_obj
, const char *key
);
161 typedef bt_bool (* bt_value_map_foreach_entry_cb
)(const char *key
,
162 struct bt_value
*object
, void *data
);
164 extern enum bt_value_status
bt_value_map_foreach_entry(
165 const struct bt_value
*map_obj
,
166 bt_value_map_foreach_entry_cb cb
, void *data
);
168 extern bt_bool
bt_value_map_has_entry(const struct bt_value
*map_obj
,
171 extern enum bt_value_status
bt_value_map_extend(
172 struct bt_private_value
**extended_map_obj
,
173 const struct bt_value
*base_map_obj
,
174 const struct bt_value
*extension_map_obj
);
180 #endif /* BABELTRACE_VALUES_H */