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61 lines
1.4 KiB
61 lines
1.4 KiB
/**
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* \file
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*
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* \author Georg Hopp
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*
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* \copyright
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* Copyright © 2014 Georg Hopp
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "tr/tree.h"
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void
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TR_treeWalk(TR_Tree this, const void * data, TR_TreeAction action)
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{
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TR_Tree previous = this;
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TR_Tree node = this;
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int depth = 1;
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while (NULL != node) {
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if (previous == TR_TREE_RIGHT(node)) {
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previous = node;
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node = node->parent;
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depth--;
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continue;
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}
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if (NULL == TR_TREE_LEFT(node) || previous == TR_TREE_LEFT(node)) {
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if (action) {
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action(node->data, data, depth);
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}
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previous = node;
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if (NULL != TR_TREE_RIGHT(node)) {
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node = TR_TREE_RIGHT(node);
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depth++;
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} else {
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node = TR_TREE_PARENT(node);
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depth--;
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}
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} else {
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previous = node;
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node = TR_TREE_LEFT(node);
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depth++;
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}
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}
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}
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// vim: set ts=4 sw=4:
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