1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
/**
* @file diff.h
* @author Michal Vasko <mvasko@cesnet.cz>
* @brief internal diff header
*
* Copyright (c) 2020 - 2025 CESNET, z.s.p.o.
*
* This source code is licensed under BSD 3-Clause License (the "License").
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://opensource.org/licenses/BSD-3-Clause
*/
#ifndef LY_DIFF_H_
#define LY_DIFF_H_
#include <stdint.h>
#include "log.h"
struct lyd_node;
/**
* @brief Internal structure for storing current (virtual) user-ordered instances order.
*/
struct lyd_diff_userord {
const struct lysc_node *schema; /**< User-ordered list/leaf-list schema node. */
uint64_t pos; /**< Current position in the second tree. */
const struct lyd_node **inst; /**< Sized array of current instance order. */
};
/**
* @brief Diff operations.
*/
enum lyd_diff_op {
LYD_DIFF_OP_CREATE, /**< Subtree created. */
LYD_DIFF_OP_DELETE, /**< Subtree deleted. */
LYD_DIFF_OP_REPLACE, /**< Node value changed or (leaf-)list instance moved. */
LYD_DIFF_OP_NONE /**< No change of an existing inner node or default flag change of a term node. */
};
/**
* @brief Add a new change into diff.
*
* @param[in] node Node (subtree) to add into diff.
* @param[in] op Operation to set.
* @param[in] orig_default Original default metadata to set.
* @param[in] orig_value Original value metadata to set.
* @param[in] key Key metadata to set.
* @param[in] value Value metadata to set.
* @param[in] position Position metadata to set.
* @param[in] orig_key Original key metadata to set.
* @param[in] orig_position Original position metadata to set.
* @param[in,out] diff Diff to append to.
* @param[out] diff_node Optional created diff node.
* @return LY_ERR value.
*/
LIBYANG_API_DECL LY_ERR lyd_diff_add(const struct lyd_node *node, enum lyd_diff_op op, const char *orig_default,
const char *orig_value, const char *key, const char *value, const char *position, const char *orig_key,
const char *orig_position, struct lyd_node **diff, struct lyd_node **diff_node);
#endif /* LY_DIFF_H_ */