feat(nested-nodes): change data structure to flat array of nodes

2021-10-21 15:39:27 +02:00
parent 64239fbb51
commit 2252ea11ae
8 changed files with 64 additions and 205 deletions
@@ -1,120 +0,0 @@
-import { Node } from '../types';
-
-function flat(arr: Node[], target: Node[]) {
-  arr.forEach(function (el) {
-    target.push(el);
-    if (el.childNodes) {
-      flat(el.childNodes, target);
-    }
-  });
-}
-
-const filterNodes = (condition: (node: Node) => boolean, nodes: Node[]): Node[] => {
-  let res = [];
-
-  for (let i = 0; i < nodes.length; i++) {
-    const n = nodes[i];
-
-    if (condition(n)) {
-      res.push(n);
-    }
-
-    if (n.childNodes) {
-      const matches = filterNodes(condition, n.childNodes);
-
-      for (let j = 0; j < matches.length; j++) {
-        res.push(matches[j]);
-      }
-    }
-  }
-
-  return res;
-};
-
-const mapNodes = (accessor: (node: Node) => any, nodes: Node[]): Node[] => {
-  let res = [];
-
-  for (let i = 0; i < nodes.length; i++) {
-    const n = nodes[i];
-    res.push(accessor(n));
-
-    if (n.childNodes) {
-      n.childNodes = mapNodes(accessor, n.childNodes);
-    }
-  }
-
-  return res;
-};
-
-const forEachNode = (accessor: (node: Node) => any, nodes: Node[]): void => {
-  for (let i = 0; i < nodes.length; i++) {
-    const n = nodes[i];
-    accessor(n);
-
-    if (n.childNodes) {
-      forEachNode(accessor, n.childNodes);
-    }
-  }
-};
-
-function findNode(accessor: (node: Node) => boolean, nodes: Node[]): Node | undefined {
-  let res = undefined;
-
-  for (let i = 0; i < nodes.length; i++) {
-    const n = nodes[i];
-
-    if (accessor(n)) {
-      return n;
-    }
-
-    if (n.childNodes) {
-      res = findNode(accessor, n.childNodes);
-
-      if (res) {
-        return res;
-      }
-    }
-  }
-
-  return res;
-}
-
-export interface NodeHelper {
-  filter: (accessor: (node: Node) => boolean) => Node[];
-  map: (accessor: (node: Node) => any) => Node[];
-  find: (accessor: (node: Node) => boolean) => Node | undefined;
-  forEach: (accessor: (node: Node) => void) => void;
-  flatten: () => Node[];
-}
-
-export function nodeHelper(nodes: Node[]): NodeHelper {
-  const flatten: NodeHelper['flatten'] = () => {
-    const flattened: Node[] = [];
-    flat(nodes, flattened);
-    return flattened;
-  };
-
-  const filter: NodeHelper['filter'] = (accessor) => {
-    return filterNodes(accessor, nodes);
-  };
-
-  const forEach: NodeHelper['forEach'] = (accessor) => {
-    return forEachNode(accessor, nodes);
-  };
-
-  const find: NodeHelper['find'] = (accessor) => {
-    return findNode(accessor, nodes);
-  };
-
-  const map: NodeHelper['map'] = (accessor) => {
-    return mapNodes(accessor, nodes);
-  };
-
-  return {
-    filter,
-    forEach,
-    flatten,
-    find,
-    map,
-  };
-}