src/tree.c

Wed, 16 Nov 2022 22:27:46 +0100

author
Mike Becker <universe@uap-core.de>
date
Wed, 16 Nov 2022 22:27:46 +0100
changeset 610
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parent 592
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child 678
78f943d76f50
permissions
-rw-r--r--

#219 array list: implement add and at

Add uses the low level cx_array_copy function which is
now also implemented, but not tested by individual unit
tests.

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

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