/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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import { TreeNode } from '../../data/Tree';
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/**
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* Traverse the tree from bottom to top and do something
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*/
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function eachAfter<T>(
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root: TreeNode,
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callback: (node: TreeNode, separation: T) => void,
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separation: T
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) {
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const nodes = [root];
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const next = [];
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let node;
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while (node = nodes.pop()) { // jshint ignore:line
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next.push(node);
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if (node.isExpand) {
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const children = node.children;
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if (children.length) {
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for (let i = 0; i < children.length; i++) {
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nodes.push(children[i]);
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}
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}
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}
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}
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while (node = next.pop()) { // jshint ignore:line
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callback(node, separation);
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}
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}
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/**
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* Traverse the tree from top to bottom and do something
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*/
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function eachBefore(root: TreeNode, callback: (node: TreeNode) => void) {
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const nodes = [root];
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let node;
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while (node = nodes.pop()) { // jshint ignore:line
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callback(node);
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if (node.isExpand) {
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const children = node.children;
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if (children.length) {
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for (let i = children.length - 1; i >= 0; i--) {
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nodes.push(children[i]);
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}
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}
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}
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}
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}
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export { eachAfter, eachBefore };
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