ucx/tree.c

branch
newapi
changeset 187
24ce2c326d85
parent 186
5db4979bf482
child 188
fbbae6738252
equal deleted inserted replaced
186:5db4979bf482 187:24ce2c326d85
1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2021 Mike Becker, Olaf Wintermann All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "cx/tree.h"
30 #include "cx/linked_list.h"
31
32 #define CX_TR_PTR(cur, off) *((void**)(((char*)(cur))+(off)))
33
34 void cx_tree_add_sibling(void *node, ptrdiff_t loc_prev, ptrdiff_t loc_next, ptrdiff_t loc_parent, void *new_node) {
35 cx_linked_list_add(&node, NULL, loc_prev, loc_next, new_node);
36
37 // optional parent link
38 if (loc_parent >= 0) {
39 CX_TR_PTR(new_node, loc_parent) = CX_TR_PTR(node, loc_parent);
40 }
41 }
42
43 void cx_tree_add_child(void **children_begin, void **children_end,
44 ptrdiff_t loc_prev, ptrdiff_t loc_next, void *new_node,
45 ptrdiff_t loc_parent, void *parent) {
46 cx_linked_list_add(children_begin, children_end, loc_prev, loc_next, new_node);
47
48 // optional parent link
49 if (loc_parent >= 0) {
50 CX_TR_PTR(new_node, loc_parent) = parent;
51 }
52 }

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