mirror of
https://github.com/angular/angular
synced 2026-05-24 09:28:37 +00:00
188 lines
No EOL
29 KiB
JavaScript
188 lines
No EOL
29 KiB
JavaScript
"use strict";
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var url_tree_1 = require('./url_tree');
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var tree_1 = require('./utils/tree');
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var collection_1 = require('./utils/collection');
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var shared_1 = require('./shared');
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function createUrlTree(route, urlTree, commands, queryParameters, fragment) {
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if (commands.length === 0) {
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return tree(urlTree._root, urlTree, queryParameters, fragment);
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}
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var normalizedCommands = normalizeCommands(commands);
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if (navigateToRoot(normalizedCommands)) {
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return tree(new tree_1.TreeNode(urlTree.root, []), urlTree, queryParameters, fragment);
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}
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var startingNode = findStartingNode(normalizedCommands, urlTree, route);
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var updated = normalizedCommands.commands.length > 0 ?
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updateMany(startingNode.children.slice(0), normalizedCommands.commands) :
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[];
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var newRoot = constructNewTree(urlTree._root, startingNode, updated);
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return tree(newRoot, urlTree, queryParameters, fragment);
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}
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exports.createUrlTree = createUrlTree;
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function tree(root, urlTree, queryParameters, fragment) {
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var q = queryParameters ? stringify(queryParameters) : urlTree.queryParameters;
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var f = fragment ? fragment : urlTree.fragment;
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return new url_tree_1.UrlTree(root, q, f);
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}
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function navigateToRoot(normalizedChange) {
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return normalizedChange.isAbsolute && normalizedChange.commands.length === 1 &&
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normalizedChange.commands[0] == "/";
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}
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var NormalizedNavigationCommands = (function () {
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function NormalizedNavigationCommands(isAbsolute, numberOfDoubleDots, commands) {
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this.isAbsolute = isAbsolute;
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this.numberOfDoubleDots = numberOfDoubleDots;
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this.commands = commands;
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}
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return NormalizedNavigationCommands;
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}());
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function normalizeCommands(commands) {
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if ((typeof commands[0] === "string") && commands.length === 1 && commands[0] == "/") {
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return new NormalizedNavigationCommands(true, 0, commands);
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}
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var numberOfDoubleDots = 0;
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var isAbsolute = false;
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var res = [];
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for (var i = 0; i < commands.length; ++i) {
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var c = commands[i];
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if (!(typeof c === "string")) {
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res.push(c);
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continue;
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}
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var parts = c.split('/');
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for (var j = 0; j < parts.length; ++j) {
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var cc = parts[j];
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if (i == 0) {
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if (j == 0 && cc == ".") {
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}
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else if (j == 0 && cc == "") {
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isAbsolute = true;
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}
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else if (cc == "..") {
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numberOfDoubleDots++;
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}
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else if (cc != '') {
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res.push(cc);
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}
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}
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else {
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if (cc != '') {
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res.push(cc);
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}
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}
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}
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}
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return new NormalizedNavigationCommands(isAbsolute, numberOfDoubleDots, res);
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}
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function findStartingNode(normalizedChange, urlTree, route) {
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if (normalizedChange.isAbsolute) {
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return urlTree._root;
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}
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else {
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var urlSegment = findUrlSegment(route, urlTree, normalizedChange.numberOfDoubleDots);
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return findMatchingNode(urlSegment, urlTree._root);
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}
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}
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function findUrlSegment(route, urlTree, numberOfDoubleDots) {
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var urlSegment = route.snapshot._lastUrlSegment;
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var path = urlTree.pathFromRoot(urlSegment);
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if (path.length <= numberOfDoubleDots) {
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throw new Error("Invalid number of '../'");
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}
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return path[path.length - 1 - numberOfDoubleDots];
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}
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function findMatchingNode(segment, node) {
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if (node.value === segment)
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return node;
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for (var _i = 0, _a = node.children; _i < _a.length; _i++) {
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var c = _a[_i];
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var r = findMatchingNode(segment, c);
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if (r)
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return r;
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}
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throw new Error("Cannot find url segment '" + segment + "'");
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}
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function constructNewTree(node, original, updated) {
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if (node === original) {
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return new tree_1.TreeNode(node.value, updated);
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}
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else {
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return new tree_1.TreeNode(node.value, node.children.map(function (c) { return constructNewTree(c, original, updated); }));
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}
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}
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function updateMany(nodes, commands) {
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var outlet = getOutlet(commands);
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var nodesInRightOutlet = nodes.filter(function (c) { return c.value.outlet === outlet; });
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if (nodesInRightOutlet.length > 0) {
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var nodeRightOutlet = nodesInRightOutlet[0];
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nodes[nodes.indexOf(nodeRightOutlet)] = update(nodeRightOutlet, commands);
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}
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else {
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nodes.push(update(null, commands));
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}
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return nodes;
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}
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function getPath(commands) {
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if (!(typeof commands[0] === "string"))
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return commands[0];
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var parts = commands[0].toString().split(":");
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return parts.length > 1 ? parts[1] : commands[0];
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}
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function getOutlet(commands) {
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if (!(typeof commands[0] === "string"))
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return shared_1.PRIMARY_OUTLET;
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var parts = commands[0].toString().split(":");
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return parts.length > 1 ? parts[0] : shared_1.PRIMARY_OUTLET;
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}
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function update(node, commands) {
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var rest = commands.slice(1);
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var next = rest.length === 0 ? null : rest[0];
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var outlet = getOutlet(commands);
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var path = getPath(commands);
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if (!node && !(typeof next === 'object')) {
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var urlSegment = new url_tree_1.UrlSegment(path, {}, outlet);
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var children = rest.length === 0 ? [] : [update(null, rest)];
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return new tree_1.TreeNode(urlSegment, children);
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}
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else if (!node && typeof next === 'object') {
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var urlSegment = new url_tree_1.UrlSegment(path, stringify(next), outlet);
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return recurse(urlSegment, node, rest.slice(1));
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}
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else if (node && outlet !== node.value.outlet) {
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return node;
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}
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else if (node && typeof path === 'object') {
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var newSegment = new url_tree_1.UrlSegment(node.value.path, stringify(path), node.value.outlet);
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return recurse(newSegment, node, rest);
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}
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else if (node && typeof next === 'object' && compare(path, stringify(next), node.value)) {
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return recurse(node.value, node, rest.slice(1));
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}
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else if (node && typeof next === 'object') {
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var urlSegment = new url_tree_1.UrlSegment(path, stringify(next), outlet);
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return recurse(urlSegment, node, rest.slice(1));
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}
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else if (node && compare(path, {}, node.value)) {
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return recurse(node.value, node, rest);
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}
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else {
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var urlSegment = new url_tree_1.UrlSegment(path, {}, outlet);
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return recurse(urlSegment, node, rest);
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}
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}
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function stringify(params) {
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var res = {};
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collection_1.forEach(params, function (v, k) { return res[k] = v.toString(); });
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return res;
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}
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function compare(path, params, segment) {
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return path == segment.path && collection_1.shallowEqual(params, segment.parameters);
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}
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function recurse(urlSegment, node, rest) {
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if (rest.length === 0) {
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return new tree_1.TreeNode(urlSegment, []);
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}
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var children = node ? node.children.slice(0) : [];
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return new tree_1.TreeNode(urlSegment, updateMany(children, rest));
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}
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{ UrlTree, UrlSegment, equalUrlSegments } from './url_tree';\nimport { TreeNode } from './utils/tree';\nimport { forEach, shallowEqual } from './utils/collection';\nimport { RouterState, ActivatedRoute } from './router_state';\nimport { Params, PRIMARY_OUTLET } from './shared';\n\nexport function createUrlTree(route: ActivatedRoute, urlTree: UrlTree, commands: any[], \n                              queryParameters: Params | undefined, fragment: string | undefined): UrlTree {\n  if (commands.length === 0) {\n    return tree(urlTree._root, urlTree, queryParameters, fragment);\n  }\n\n  const normalizedCommands = normalizeCommands(commands);\n  if (navigateToRoot(normalizedCommands)) {\n    return tree(new TreeNode<UrlSegment>(urlTree.root, []), urlTree, queryParameters, fragment);\n  }\n\n  const startingNode = findStartingNode(normalizedCommands, urlTree, route);\n  const updated = normalizedCommands.commands.length > 0 ?\n      updateMany(startingNode.children.slice(0), normalizedCommands.commands) :\n      [];\n  const newRoot = constructNewTree(urlTree._root, startingNode, updated);\n\n  return tree(newRoot, urlTree, queryParameters, fragment);\n}\n\nfunction tree(root: TreeNode<UrlSegment>, urlTree: UrlTree, queryParameters: Params | undefined, fragment: string | undefined): UrlTree {\n  const q = queryParameters ? stringify(queryParameters) : urlTree.queryParameters;\n  const f = fragment ? fragment : urlTree.fragment;\n  return new UrlTree(root, q, f);\n}\n\nfunction navigateToRoot(normalizedChange: NormalizedNavigationCommands): boolean {\n  return normalizedChange.isAbsolute && normalizedChange.commands.length === 1 &&\n    normalizedChange.commands[0] == \"/\";\n}\n\nclass NormalizedNavigationCommands {\n  constructor(public isAbsolute: boolean, public numberOfDoubleDots: number,\n              public commands: any[]) {}\n}\n\nfunction normalizeCommands(commands: any[]): NormalizedNavigationCommands {\n  if ((typeof commands[0] === \"string\") && commands.length === 1 && commands[0] == \"/\") {\n    return new NormalizedNavigationCommands(true, 0, commands);\n  }\n\n  let numberOfDoubleDots = 0;\n  let isAbsolute = false;\n  const res = [];\n\n  for (let i = 0; i < commands.length; ++i) {\n    const c = commands[i];\n\n    if (!(typeof c === \"string\")) {\n      res.push(c);\n      continue;\n    }\n\n    const parts = c.split('/');\n    for (let j = 0; j < parts.length; ++j) {\n      let cc = parts[j];\n\n      // first exp is treated in a special way\n      if (i == 0) {\n        if (j == 0 && cc == \".\") {  //  './a'\n          // skip it\n        } else if (j == 0 && cc == \"\") {  //  '/a'\n          isAbsolute = true;\n        } else if (cc == \"..\") {  //  '../a'\n          numberOfDoubleDots++;\n        } else if (cc != '') {\n          res.push(cc);\n        }\n\n      } else {\n        if (cc != '') {\n          res.push(cc);\n        }\n      }\n    }\n  }\n\n  return new NormalizedNavigationCommands(isAbsolute, numberOfDoubleDots, res);\n}\n\nfunction findStartingNode(normalizedChange: NormalizedNavigationCommands, urlTree: UrlTree,\n                           route: ActivatedRoute): TreeNode<UrlSegment> {\n  if (normalizedChange.isAbsolute) {\n    return urlTree._root;\n  } else {\n    const urlSegment =\n      findUrlSegment(route, urlTree, normalizedChange.numberOfDoubleDots);\n    return findMatchingNode(urlSegment, urlTree._root);\n  }\n}\n\nfunction findUrlSegment(route: ActivatedRoute, urlTree: UrlTree, numberOfDoubleDots: number): UrlSegment {\n  const urlSegment = route.snapshot._lastUrlSegment;\n  const path = urlTree.pathFromRoot(urlSegment);\n  if (path.length <= numberOfDoubleDots) {\n    throw new Error(\"Invalid number of '../'\");\n  }\n  return path[path.length - 1 - numberOfDoubleDots];\n}\n\nfunction findMatchingNode(segment: UrlSegment, node: TreeNode<UrlSegment>): TreeNode<UrlSegment> {\n  if (node.value === segment) return node;\n  for (let c of node.children) {\n    const r = findMatchingNode(segment, c);\n    if (r) return r;\n  }\n  throw new Error(`Cannot find url segment '${segment}'`);\n}\n\nfunction constructNewTree(node: TreeNode<UrlSegment>, original: TreeNode<UrlSegment>,\n                          updated: TreeNode<UrlSegment>[]): TreeNode<UrlSegment> {\n  if (node === original) {\n    return new TreeNode<UrlSegment>(node.value, updated);\n  } else {\n    return new TreeNode<UrlSegment>(\n      node.value, node.children.map(c => constructNewTree(c, original, updated)));\n  }\n}\n\nfunction updateMany(nodes: TreeNode<UrlSegment>[], commands: any[]): TreeNode<UrlSegment>[] {\n  const outlet = getOutlet(commands);\n  const nodesInRightOutlet = nodes.filter(c => c.value.outlet === outlet);\n  if (nodesInRightOutlet.length > 0) {\n    const nodeRightOutlet = nodesInRightOutlet[0];  // there can be only one\n    nodes[nodes.indexOf(nodeRightOutlet)] = update(nodeRightOutlet, commands);\n  } else {\n    nodes.push(update(null, commands));\n  }\n  return nodes;\n}\n\nfunction getPath(commands: any[]): any {\n  if (!(typeof commands[0] === \"string\")) return commands[0];\n  const parts = commands[0].toString().split(\":\");\n  return parts.length > 1 ? parts[1] : commands[0];\n}\n\nfunction getOutlet(commands: any[]): string {\n  if (!(typeof commands[0] === \"string\")) return PRIMARY_OUTLET;\n  const parts = commands[0].toString().split(\":\");\n  return parts.length > 1 ? parts[0] : PRIMARY_OUTLET;\n}\n\nfunction update(node: TreeNode<UrlSegment>|null, commands: any[]): TreeNode<UrlSegment> {\n  const rest = commands.slice(1);\n  const next = rest.length === 0 ? null : rest[0];\n  const outlet = getOutlet(commands);\n  const path = getPath(commands);\n\n  // reach the end of the tree => create new tree nodes.\n  if (!node && !(typeof next === 'object')) {\n    const urlSegment = new UrlSegment(path, {}, outlet);\n    const children = rest.length === 0 ? [] : [update(null, rest)];\n    return new TreeNode<UrlSegment>(urlSegment, children);\n\n  } else if (!node && typeof next === 'object') {\n    const urlSegment = new UrlSegment(path, stringify(next), outlet);\n    return recurse(urlSegment, node, rest.slice(1));\n\n    // different outlet => preserve the subtree\n  } else if (node && outlet !== node.value.outlet) {\n    return node;\n\n    // params command\n  } else if (node && typeof path === 'object') {\n    const newSegment = new UrlSegment(node.value.path, stringify(path), node.value.outlet);\n    return recurse(newSegment, node, rest);\n\n    // next one is a params command && can reuse the node\n  } else if (node && typeof next === 'object' && compare(path, stringify(next), node.value)) {\n    return recurse(node.value, node, rest.slice(1));\n\n    // next one is a params command && cannot reuse the node\n  } else if (node && typeof next === 'object') {\n    const urlSegment = new UrlSegment(path, stringify(next), outlet);\n    return recurse(urlSegment, node, rest.slice(1));\n\n    // next one is not a params command && can reuse the node\n  } else if (node && compare(path, {}, node.value)) {\n    return recurse(node.value, node, rest);\n\n    // next one is not a params command && cannot reuse the node\n  } else {\n    const urlSegment = new UrlSegment(path, {}, outlet);\n    return recurse(urlSegment, node, rest);\n  }\n}\n\nfunction stringify(params: {[key: string]: any}): {[key: string]: string} {\n  const res = {};\n  forEach(params, (v, k) => res[k] = v.toString());\n  return res;\n}\n\nfunction compare(path: string, params: {[key: string]: any}, segment: UrlSegment): boolean {\n  return path == segment.path && shallowEqual(params, segment.parameters);\n}\n\nfunction recurse(urlSegment: UrlSegment, node: TreeNode<UrlSegment> | null,\n                  rest: any[]): TreeNode<UrlSegment> {\n  if (rest.length === 0) {\n    return new TreeNode<UrlSegment>(urlSegment, []);\n  }\n  const children = node ? node.children.slice(0) : [];\n  return new TreeNode<UrlSegment>(urlSegment, updateMany(children, rest));\n}"]}
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