/** * @license * Copyright Google LLC All Rights Reserved. * * Use of this source code is governed by an MIT-style license that can be * found in the LICENSE file at https://angular.io/license */ import { Injectable, ɵRuntimeError as RuntimeError } from '@angular/core'; import { convertToParamMap, PRIMARY_OUTLET } from './shared'; import { equalArraysOrString, forEach, shallowEqual } from './utils/collection'; import * as i0 from "@angular/core"; const NG_DEV_MODE = typeof ngDevMode === 'undefined' || ngDevMode; export function createEmptyUrlTree() { return new UrlTree(new UrlSegmentGroup([], {}), {}, null); } const pathCompareMap = { 'exact': equalSegmentGroups, 'subset': containsSegmentGroup, }; const paramCompareMap = { 'exact': equalParams, 'subset': containsParams, 'ignored': () => true, }; export function containsTree(container, containee, options) { return pathCompareMap[options.paths](container.root, containee.root, options.matrixParams) && paramCompareMap[options.queryParams](container.queryParams, containee.queryParams) && !(options.fragment === 'exact' && container.fragment !== containee.fragment); } function equalParams(container, containee) { // TODO: This does not handle array params correctly. return shallowEqual(container, containee); } function equalSegmentGroups(container, containee, matrixParams) { if (!equalPath(container.segments, containee.segments)) return false; if (!matrixParamsMatch(container.segments, containee.segments, matrixParams)) { return false; } if (container.numberOfChildren !== containee.numberOfChildren) return false; for (const c in containee.children) { if (!container.children[c]) return false; if (!equalSegmentGroups(container.children[c], containee.children[c], matrixParams)) return false; } return true; } function containsParams(container, containee) { return Object.keys(containee).length <= Object.keys(container).length && Object.keys(containee).every(key => equalArraysOrString(container[key], containee[key])); } function containsSegmentGroup(container, containee, matrixParams) { return containsSegmentGroupHelper(container, containee, containee.segments, matrixParams); } function containsSegmentGroupHelper(container, containee, containeePaths, matrixParams) { if (container.segments.length > containeePaths.length) { const current = container.segments.slice(0, containeePaths.length); if (!equalPath(current, containeePaths)) return false; if (containee.hasChildren()) return false; if (!matrixParamsMatch(current, containeePaths, matrixParams)) return false; return true; } else if (container.segments.length === containeePaths.length) { if (!equalPath(container.segments, containeePaths)) return false; if (!matrixParamsMatch(container.segments, containeePaths, matrixParams)) return false; for (const c in containee.children) { if (!container.children[c]) return false; if (!containsSegmentGroup(container.children[c], containee.children[c], matrixParams)) { return false; } } return true; } else { const current = containeePaths.slice(0, container.segments.length); const next = containeePaths.slice(container.segments.length); if (!equalPath(container.segments, current)) return false; if (!matrixParamsMatch(container.segments, current, matrixParams)) return false; if (!container.children[PRIMARY_OUTLET]) return false; return containsSegmentGroupHelper(container.children[PRIMARY_OUTLET], containee, next, matrixParams); } } function matrixParamsMatch(containerPaths, containeePaths, options) { return containeePaths.every((containeeSegment, i) => { return paramCompareMap[options](containerPaths[i].parameters, containeeSegment.parameters); }); } /** * @description * * Represents the parsed URL. * * Since a router state is a tree, and the URL is nothing but a serialized state, the URL is a * serialized tree. * UrlTree is a data structure that provides a lot of affordances in dealing with URLs * * @usageNotes * ### Example * * ``` * @Component({templateUrl:'template.html'}) * class MyComponent { * constructor(router: Router) { * const tree: UrlTree = * router.parseUrl('/team/33/(user/victor//support:help)?debug=true#fragment'); * const f = tree.fragment; // return 'fragment' * const q = tree.queryParams; // returns {debug: 'true'} * const g: UrlSegmentGroup = tree.root.children[PRIMARY_OUTLET]; * const s: UrlSegment[] = g.segments; // returns 2 segments 'team' and '33' * g.children[PRIMARY_OUTLET].segments; // returns 2 segments 'user' and 'victor' * g.children['support'].segments; // return 1 segment 'help' * } * } * ``` * * @publicApi */ export class UrlTree { /** @internal */ constructor( /** The root segment group of the URL tree */ root, /** The query params of the URL */ queryParams, /** The fragment of the URL */ fragment) { this.root = root; this.queryParams = queryParams; this.fragment = fragment; } get queryParamMap() { if (!this._queryParamMap) { this._queryParamMap = convertToParamMap(this.queryParams); } return this._queryParamMap; } /** @docsNotRequired */ toString() { return DEFAULT_SERIALIZER.serialize(this); } } /** * @description * * Represents the parsed URL segment group. * * See `UrlTree` for more information. * * @publicApi */ export class UrlSegmentGroup { constructor( /** The URL segments of this group. See `UrlSegment` for more information */ segments, /** The list of children of this group */ children) { this.segments = segments; this.children = children; /** The parent node in the url tree */ this.parent = null; forEach(children, (v, k) => v.parent = this); } /** Whether the segment has child segments */ hasChildren() { return this.numberOfChildren > 0; } /** Number of child segments */ get numberOfChildren() { return Object.keys(this.children).length; } /** @docsNotRequired */ toString() { return serializePaths(this); } } /** * @description * * Represents a single URL segment. * * A UrlSegment is a part of a URL between the two slashes. It contains a path and the matrix * parameters associated with the segment. * * @usageNotes * ### Example * * ``` * @Component({templateUrl:'template.html'}) * class MyComponent { * constructor(router: Router) { * const tree: UrlTree = router.parseUrl('/team;id=33'); * const g: UrlSegmentGroup = tree.root.children[PRIMARY_OUTLET]; * const s: UrlSegment[] = g.segments; * s[0].path; // returns 'team' * s[0].parameters; // returns {id: 33} * } * } * ``` * * @publicApi */ export class UrlSegment { constructor( /** The path part of a URL segment */ path, /** The matrix parameters associated with a segment */ parameters) { this.path = path; this.parameters = parameters; } get parameterMap() { if (!this._parameterMap) { this._parameterMap = convertToParamMap(this.parameters); } return this._parameterMap; } /** @docsNotRequired */ toString() { return serializePath(this); } } export function equalSegments(as, bs) { return equalPath(as, bs) && as.every((a, i) => shallowEqual(a.parameters, bs[i].parameters)); } export function equalPath(as, bs) { if (as.length !== bs.length) return false; return as.every((a, i) => a.path === bs[i].path); } export function mapChildrenIntoArray(segment, fn) { let res = []; forEach(segment.children, (child, childOutlet) => { if (childOutlet === PRIMARY_OUTLET) { res = res.concat(fn(child, childOutlet)); } }); forEach(segment.children, (child, childOutlet) => { if (childOutlet !== PRIMARY_OUTLET) { res = res.concat(fn(child, childOutlet)); } }); return res; } /** * @description * * Serializes and deserializes a URL string into a URL tree. * * The url serialization strategy is customizable. You can * make all URLs case insensitive by providing a custom UrlSerializer. * * See `DefaultUrlSerializer` for an example of a URL serializer. * * @publicApi */ export class UrlSerializer { } UrlSerializer.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.2.8", ngImport: i0, type: UrlSerializer, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); UrlSerializer.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "14.2.8", ngImport: i0, type: UrlSerializer, providedIn: 'root', useFactory: () => new DefaultUrlSerializer() }); i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.2.8", ngImport: i0, type: UrlSerializer, decorators: [{ type: Injectable, args: [{ providedIn: 'root', useFactory: () => new DefaultUrlSerializer() }] }] }); /** * @description * * A default implementation of the `UrlSerializer`. * * Example URLs: * * ``` * /inbox/33(popup:compose) * /inbox/33;open=true/messages/44 * ``` * * DefaultUrlSerializer uses parentheses to serialize secondary segments (e.g., popup:compose), the * colon syntax to specify the outlet, and the ';parameter=value' syntax (e.g., open=true) to * specify route specific parameters. * * @publicApi */ export class DefaultUrlSerializer { /** Parses a url into a `UrlTree` */ parse(url) { const p = new UrlParser(url); return new UrlTree(p.parseRootSegment(), p.parseQueryParams(), p.parseFragment()); } /** Converts a `UrlTree` into a url */ serialize(tree) { const segment = `/${serializeSegment(tree.root, true)}`; const query = serializeQueryParams(tree.queryParams); const fragment = typeof tree.fragment === `string` ? `#${encodeUriFragment(tree.fragment)}` : ''; return `${segment}${query}${fragment}`; } } const DEFAULT_SERIALIZER = new DefaultUrlSerializer(); export function serializePaths(segment) { return segment.segments.map(p => serializePath(p)).join('/'); } function serializeSegment(segment, root) { if (!segment.hasChildren()) { return serializePaths(segment); } if (root) { const primary = segment.children[PRIMARY_OUTLET] ? serializeSegment(segment.children[PRIMARY_OUTLET], false) : ''; const children = []; forEach(segment.children, (v, k) => { if (k !== PRIMARY_OUTLET) { children.push(`${k}:${serializeSegment(v, false)}`); } }); return children.length > 0 ? `${primary}(${children.join('//')})` : primary; } else { const children = mapChildrenIntoArray(segment, (v, k) => { if (k === PRIMARY_OUTLET) { return [serializeSegment(segment.children[PRIMARY_OUTLET], false)]; } return [`${k}:${serializeSegment(v, false)}`]; }); // use no parenthesis if the only child is a primary outlet route if (Object.keys(segment.children).length === 1 && segment.children[PRIMARY_OUTLET] != null) { return `${serializePaths(segment)}/${children[0]}`; } return `${serializePaths(segment)}/(${children.join('//')})`; } } /** * Encodes a URI string with the default encoding. This function will only ever be called from * `encodeUriQuery` or `encodeUriSegment` as it's the base set of encodings to be used. We need * a custom encoding because encodeURIComponent is too aggressive and encodes stuff that doesn't * have to be encoded per https://url.spec.whatwg.org. */ function encodeUriString(s) { return encodeURIComponent(s) .replace(/%40/g, '@') .replace(/%3A/gi, ':') .replace(/%24/g, '$') .replace(/%2C/gi, ','); } /** * This function should be used to encode both keys and values in a query string key/value. In * the following URL, you need to call encodeUriQuery on "k" and "v": * * http://www.site.org/html;mk=mv?k=v#f */ export function encodeUriQuery(s) { return encodeUriString(s).replace(/%3B/gi, ';'); } /** * This function should be used to encode a URL fragment. In the following URL, you need to call * encodeUriFragment on "f": * * http://www.site.org/html;mk=mv?k=v#f */ export function encodeUriFragment(s) { return encodeURI(s); } /** * This function should be run on any URI segment as well as the key and value in a key/value * pair for matrix params. In the following URL, you need to call encodeUriSegment on "html", * "mk", and "mv": * * http://www.site.org/html;mk=mv?k=v#f */ export function encodeUriSegment(s) { return encodeUriString(s).replace(/\(/g, '%28').replace(/\)/g, '%29').replace(/%26/gi, '&'); } export function decode(s) { return decodeURIComponent(s); } // Query keys/values should have the "+" replaced first, as "+" in a query string is " ". // decodeURIComponent function will not decode "+" as a space. export function decodeQuery(s) { return decode(s.replace(/\+/g, '%20')); } export function serializePath(path) { return `${encodeUriSegment(path.path)}${serializeMatrixParams(path.parameters)}`; } function serializeMatrixParams(params) { return Object.keys(params) .map(key => `;${encodeUriSegment(key)}=${encodeUriSegment(params[key])}`) .join(''); } function serializeQueryParams(params) { const strParams = Object.keys(params) .map((name) => { const value = params[name]; return Array.isArray(value) ? value.map(v => `${encodeUriQuery(name)}=${encodeUriQuery(v)}`).join('&') : `${encodeUriQuery(name)}=${encodeUriQuery(value)}`; }) .filter(s => !!s); return strParams.length ? `?${strParams.join('&')}` : ''; } const SEGMENT_RE = /^[^\/()?;=#]+/; function matchSegments(str) { const match = str.match(SEGMENT_RE); return match ? match[0] : ''; } const QUERY_PARAM_RE = /^[^=?&#]+/; // Return the name of the query param at the start of the string or an empty string function matchQueryParams(str) { const match = str.match(QUERY_PARAM_RE); return match ? match[0] : ''; } const QUERY_PARAM_VALUE_RE = /^[^&#]+/; // Return the value of the query param at the start of the string or an empty string function matchUrlQueryParamValue(str) { const match = str.match(QUERY_PARAM_VALUE_RE); return match ? match[0] : ''; } class UrlParser { constructor(url) { this.url = url; this.remaining = url; } parseRootSegment() { this.consumeOptional('/'); if (this.remaining === '' || this.peekStartsWith('?') || this.peekStartsWith('#')) { return new UrlSegmentGroup([], {}); } // The root segment group never has segments return new UrlSegmentGroup([], this.parseChildren()); } parseQueryParams() { const params = {}; if (this.consumeOptional('?')) { do { this.parseQueryParam(params); } while (this.consumeOptional('&')); } return params; } parseFragment() { return this.consumeOptional('#') ? decodeURIComponent(this.remaining) : null; } parseChildren() { if (this.remaining === '') { return {}; } this.consumeOptional('/'); const segments = []; if (!this.peekStartsWith('(')) { segments.push(this.parseSegment()); } while (this.peekStartsWith('/') && !this.peekStartsWith('//') && !this.peekStartsWith('/(')) { this.capture('/'); segments.push(this.parseSegment()); } let children = {}; if (this.peekStartsWith('/(')) { this.capture('/'); children = this.parseParens(true); } let res = {}; if (this.peekStartsWith('(')) { res = this.parseParens(false); } if (segments.length > 0 || Object.keys(children).length > 0) { res[PRIMARY_OUTLET] = new UrlSegmentGroup(segments, children); } return res; } // parse a segment with its matrix parameters // ie `name;k1=v1;k2` parseSegment() { const path = matchSegments(this.remaining); if (path === '' && this.peekStartsWith(';')) { throw new RuntimeError(4009 /* RuntimeErrorCode.EMPTY_PATH_WITH_PARAMS */, NG_DEV_MODE && `Empty path url segment cannot have parameters: '${this.remaining}'.`); } this.capture(path); return new UrlSegment(decode(path), this.parseMatrixParams()); } parseMatrixParams() { const params = {}; while (this.consumeOptional(';')) { this.parseParam(params); } return params; } parseParam(params) { const key = matchSegments(this.remaining); if (!key) { return; } this.capture(key); let value = ''; if (this.consumeOptional('=')) { const valueMatch = matchSegments(this.remaining); if (valueMatch) { value = valueMatch; this.capture(value); } } params[decode(key)] = decode(value); } // Parse a single query parameter `name[=value]` parseQueryParam(params) { const key = matchQueryParams(this.remaining); if (!key) { return; } this.capture(key); let value = ''; if (this.consumeOptional('=')) { const valueMatch = matchUrlQueryParamValue(this.remaining); if (valueMatch) { value = valueMatch; this.capture(value); } } const decodedKey = decodeQuery(key); const decodedVal = decodeQuery(value); if (params.hasOwnProperty(decodedKey)) { // Append to existing values let currentVal = params[decodedKey]; if (!Array.isArray(currentVal)) { currentVal = [currentVal]; params[decodedKey] = currentVal; } currentVal.push(decodedVal); } else { // Create a new value params[decodedKey] = decodedVal; } } // parse `(a/b//outlet_name:c/d)` parseParens(allowPrimary) { const segments = {}; this.capture('('); while (!this.consumeOptional(')') && this.remaining.length > 0) { const path = matchSegments(this.remaining); const next = this.remaining[path.length]; // if is is not one of these characters, then the segment was unescaped // or the group was not closed if (next !== '/' && next !== ')' && next !== ';') { throw new RuntimeError(4010 /* RuntimeErrorCode.UNPARSABLE_URL */, NG_DEV_MODE && `Cannot parse url '${this.url}'`); } let outletName = undefined; if (path.indexOf(':') > -1) { outletName = path.slice(0, path.indexOf(':')); this.capture(outletName); this.capture(':'); } else if (allowPrimary) { outletName = PRIMARY_OUTLET; } const children = this.parseChildren(); segments[outletName] = Object.keys(children).length === 1 ? children[PRIMARY_OUTLET] : new UrlSegmentGroup([], children); this.consumeOptional('//'); } return segments; } peekStartsWith(str) { return this.remaining.startsWith(str); } // Consumes the prefix when it is present and returns whether it has been consumed consumeOptional(str) { if (this.peekStartsWith(str)) { this.remaining = this.remaining.substring(str.length); return true; } return false; } capture(str) { if (!this.consumeOptional(str)) { throw new RuntimeError(4011 /* RuntimeErrorCode.UNEXPECTED_VALUE_IN_URL */, NG_DEV_MODE && `Expected "${str}".`); } } } export function createRoot(rootCandidate) { return rootCandidate.segments.length > 0 ? new UrlSegmentGroup([], { [PRIMARY_OUTLET]: rootCandidate }) : rootCandidate; } /** * Recursively merges primary segment children into their parents and also drops empty children * (those which have no segments and no children themselves). The latter prevents serializing a * group into something like `/a(aux:)`, where `aux` is an empty child segment. */ export function squashSegmentGroup(segmentGroup) { const newChildren = {}; for (const childOutlet of Object.keys(segmentGroup.children)) { const child = segmentGroup.children[childOutlet]; const childCandidate = squashSegmentGroup(child); // don't add empty children if (childCandidate.segments.length > 0 || childCandidate.hasChildren()) { newChildren[childOutlet] = childCandidate; } } const s = new UrlSegmentGroup(segmentGroup.segments, newChildren); return mergeTrivialChildren(s); } /** * When possible, merges the primary outlet child into the parent `UrlSegmentGroup`. * * When a segment group has only one child which is a primary outlet, merges that child into the * parent. That is, the child segment group's segments are merged into the `s` and the child's * children become the children of `s`. Think of this like a 'squash', merging the child segment * group into the parent. */ function mergeTrivialChildren(s) { if (s.numberOfChildren === 1 && s.children[PRIMARY_OUTLET]) { const c = s.children[PRIMARY_OUTLET]; return new UrlSegmentGroup(s.segments.concat(c.segments), c.children); } return s; } export function isUrlTree(v) { return v instanceof UrlTree; } //# 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That is, the active route may contain extra\n   * segments, but must at least have all the segments of the `UrlTree` in question.\n   */\n  paths: 'exact'|'subset';\n  /**\n   * - `'exact'`: indicates that the `UrlTree` fragments must be equal.\n   * - `'ignored'`: the fragments will not be compared when determining if a\n   * `UrlTree` is active.\n   */\n  fragment: 'exact'|'ignored';\n}\n\ntype ParamMatchOptions = 'exact'|'subset'|'ignored';\n\ntype PathCompareFn =\n    (container: UrlSegmentGroup, containee: UrlSegmentGroup, matrixParams: ParamMatchOptions) =>\n        boolean;\ntype ParamCompareFn = (container: Params, containee: Params) => boolean;\n\nconst pathCompareMap: Record<IsActiveMatchOptions['paths'], PathCompareFn> = {\n  'exact': equalSegmentGroups,\n  'subset': containsSegmentGroup,\n};\nconst paramCompareMap: Record<ParamMatchOptions, ParamCompareFn> = {\n  'exact': equalParams,\n  'subset': containsParams,\n  'ignored': () => true,\n};\n\nexport function 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router.parseUrl('/team/33/(user/victor//support:help)?debug=true#fragment');\n *     const f = tree.fragment; // return 'fragment'\n *     const q = tree.queryParams; // returns {debug: 'true'}\n *     const g: UrlSegmentGroup = tree.root.children[PRIMARY_OUTLET];\n *     const s: UrlSegment[] = g.segments; // returns 2 segments 'team' and '33'\n *     g.children[PRIMARY_OUTLET].segments; // returns 2 segments 'user' and 'victor'\n *     g.children['support'].segments; // return 1 segment 'help'\n *   }\n * }\n * ```\n *\n * @publicApi\n */\nexport class UrlTree {\n  /** @internal */\n  // TODO(issue/24571): remove '!'.\n  _queryParamMap!: ParamMap;\n\n  /** @internal */\n  constructor(\n      /** The root segment group of the URL tree */\n      public root: UrlSegmentGroup,\n      /** The query params of the URL */\n      public queryParams: Params,\n      /** The fragment of the URL */\n      public fragment: string|null) {}\n\n  get queryParamMap(): ParamMap {\n    if (!this._queryParamMap) {\n      this._queryParamMap = convertToParamMap(this.queryParams);\n    }\n    return this._queryParamMap;\n  }\n\n  /** @docsNotRequired */\n  toString(): string {\n    return DEFAULT_SERIALIZER.serialize(this);\n  }\n}\n\n/**\n * @description\n *\n * Represents the parsed URL segment group.\n *\n * See `UrlTree` for more information.\n *\n * @publicApi\n */\nexport class UrlSegmentGroup {\n  /** @internal */\n  _sourceSegment?: UrlSegmentGroup;\n  /** @internal */\n  _segmentIndexShift?: number;\n  /**\n   * @internal\n   *\n   * Used only in dev mode to detect if application relies on `relativeLinkResolution: 'legacy'`\n   * Should be removed in when `relativeLinkResolution` is removed.\n   */\n  _segmentIndexShiftCorrected?: number;\n  /** The parent node in the url tree */\n  parent: UrlSegmentGroup|null = null;\n\n  constructor(\n      /** The URL segments of this group. See `UrlSegment` for more information */\n      public segments: UrlSegment[],\n      /** The list of children of this group */\n      public children: {[key: string]: UrlSegmentGroup}) {\n    forEach(children, (v: any, k: any) => v.parent = this);\n  }\n\n  /** Whether the segment has child segments */\n  hasChildren(): boolean {\n    return this.numberOfChildren > 0;\n  }\n\n  /** Number of child segments */\n  get numberOfChildren(): number {\n    return Object.keys(this.children).length;\n  }\n\n  /** @docsNotRequired */\n  toString(): string {\n    return serializePaths(this);\n  }\n}\n\n\n/**\n * @description\n *\n * Represents a single URL segment.\n *\n * A UrlSegment is a part of a URL between the two slashes. It contains a path and the matrix\n * parameters associated with the segment.\n *\n * @usageNotes\n * ### Example\n *\n * ```\n * @Component({templateUrl:'template.html'})\n * class MyComponent {\n *   constructor(router: Router) {\n *     const tree: UrlTree = router.parseUrl('/team;id=33');\n *     const g: UrlSegmentGroup = tree.root.children[PRIMARY_OUTLET];\n *     const s: UrlSegment[] = g.segments;\n *     s[0].path; // returns 'team'\n *     s[0].parameters; // returns {id: 33}\n *   }\n * }\n * ```\n *\n * @publicApi\n */\nexport class UrlSegment {\n  /** @internal */\n  // TODO(issue/24571): remove '!'.\n  _parameterMap!: ParamMap;\n\n  constructor(\n      /** The path part of a URL segment */\n      public path: string,\n\n      /** The matrix parameters associated with a segment */\n      public parameters: {[name: string]: string}) {}\n\n  get parameterMap(): ParamMap {\n    if (!this._parameterMap) {\n      this._parameterMap = convertToParamMap(this.parameters);\n    }\n    return this._parameterMap;\n  }\n\n  /** @docsNotRequired */\n  toString(): string {\n    return serializePath(this);\n  }\n}\n\nexport function equalSegments(as: UrlSegment[], bs: UrlSegment[]): boolean {\n  return equalPath(as, bs) && as.every((a, i) => shallowEqual(a.parameters, bs[i].parameters));\n}\n\nexport function equalPath(as: UrlSegment[], bs: UrlSegment[]): boolean {\n  if (as.length !== bs.length) return false;\n  return as.every((a, i) => a.path === bs[i].path);\n}\n\nexport function mapChildrenIntoArray<T>(\n    segment: UrlSegmentGroup, fn: (v: UrlSegmentGroup, k: string) => T[]): T[] {\n  let res: T[] = [];\n  forEach(segment.children, (child: UrlSegmentGroup, childOutlet: string) => {\n    if (childOutlet === PRIMARY_OUTLET) {\n      res = res.concat(fn(child, childOutlet));\n    }\n  });\n  forEach(segment.children, (child: UrlSegmentGroup, childOutlet: string) => {\n    if (childOutlet !== PRIMARY_OUTLET) {\n      res = res.concat(fn(child, childOutlet));\n    }\n  });\n  return res;\n}\n\n\n/**\n * @description\n *\n * Serializes and deserializes a URL string into a URL tree.\n *\n * The url serialization strategy is customizable. You can\n * make all URLs case insensitive by providing a custom UrlSerializer.\n *\n * See `DefaultUrlSerializer` for an example of a URL serializer.\n *\n * @publicApi\n */\n@Injectable({providedIn: 'root', useFactory: () => new DefaultUrlSerializer()})\nexport abstract class UrlSerializer {\n  /** Parse a url into a `UrlTree` */\n  abstract parse(url: string): UrlTree;\n\n  /** Converts a `UrlTree` into a url */\n  abstract serialize(tree: UrlTree): string;\n}\n\n/**\n * @description\n *\n * A default implementation of the `UrlSerializer`.\n *\n * Example URLs:\n *\n * ```\n * /inbox/33(popup:compose)\n * /inbox/33;open=true/messages/44\n * ```\n *\n * DefaultUrlSerializer uses parentheses to serialize secondary segments (e.g., popup:compose), the\n * colon syntax to specify the outlet, and the ';parameter=value' syntax (e.g., open=true) to\n * specify route specific parameters.\n *\n * @publicApi\n */\nexport class DefaultUrlSerializer implements UrlSerializer {\n  /** Parses a url into a `UrlTree` */\n  parse(url: string): UrlTree {\n    const p = new UrlParser(url);\n    return new UrlTree(p.parseRootSegment(), p.parseQueryParams(), p.parseFragment());\n  }\n\n  /** Converts a `UrlTree` into a url */\n  serialize(tree: UrlTree): string {\n    const segment = `/${serializeSegment(tree.root, true)}`;\n    const query = serializeQueryParams(tree.queryParams);\n    const fragment =\n        typeof tree.fragment === `string` ? `#${encodeUriFragment(tree.fragment)}` : '';\n\n    return `${segment}${query}${fragment}`;\n  }\n}\n\nconst DEFAULT_SERIALIZER = new DefaultUrlSerializer();\n\nexport function serializePaths(segment: UrlSegmentGroup): string {\n  return segment.segments.map(p => serializePath(p)).join('/');\n}\n\nfunction serializeSegment(segment: UrlSegmentGroup, root: boolean): string {\n  if (!segment.hasChildren()) {\n    return serializePaths(segment);\n  }\n\n  if (root) {\n    const primary = segment.children[PRIMARY_OUTLET] ?\n        serializeSegment(segment.children[PRIMARY_OUTLET], false) :\n        '';\n    const children: string[] = [];\n\n    forEach(segment.children, (v: UrlSegmentGroup, k: string) => {\n      if (k !== PRIMARY_OUTLET) {\n        children.push(`${k}:${serializeSegment(v, false)}`);\n      }\n    });\n\n    return children.length > 0 ? `${primary}(${children.join('//')})` : primary;\n\n  } else {\n    const children = mapChildrenIntoArray(segment, (v: UrlSegmentGroup, k: string) => {\n      if (k === PRIMARY_OUTLET) {\n        return [serializeSegment(segment.children[PRIMARY_OUTLET], false)];\n      }\n\n      return [`${k}:${serializeSegment(v, false)}`];\n    });\n\n    // use no parenthesis if the only child is a primary outlet route\n    if (Object.keys(segment.children).length === 1 && segment.children[PRIMARY_OUTLET] != null) {\n      return `${serializePaths(segment)}/${children[0]}`;\n    }\n\n    return `${serializePaths(segment)}/(${children.join('//')})`;\n  }\n}\n\n/**\n * Encodes a URI string with the default encoding. This function will only ever be called from\n * `encodeUriQuery` or `encodeUriSegment` as it's the base set of encodings to be used. We need\n * a custom encoding because encodeURIComponent is too aggressive and encodes stuff that doesn't\n * have to be encoded per https://url.spec.whatwg.org.\n */\nfunction encodeUriString(s: string): string {\n  return encodeURIComponent(s)\n      .replace(/%40/g, '@')\n      .replace(/%3A/gi, ':')\n      .replace(/%24/g, '$')\n      .replace(/%2C/gi, ',');\n}\n\n/**\n * This function should be used to encode both keys and values in a query string key/value. In\n * the following URL, you need to call encodeUriQuery on \"k\" and \"v\":\n *\n * http://www.site.org/html;mk=mv?k=v#f\n */\nexport function encodeUriQuery(s: string): string {\n  return encodeUriString(s).replace(/%3B/gi, ';');\n}\n\n/**\n * This function should be used to encode a URL fragment. In the following URL, you need to call\n * encodeUriFragment on \"f\":\n *\n * http://www.site.org/html;mk=mv?k=v#f\n */\nexport function encodeUriFragment(s: string): string {\n  return encodeURI(s);\n}\n\n/**\n * This function should be run on any URI segment as well as the key and value in a key/value\n * pair for matrix params. In the following URL, you need to call encodeUriSegment on \"html\",\n * \"mk\", and \"mv\":\n *\n * http://www.site.org/html;mk=mv?k=v#f\n */\nexport function encodeUriSegment(s: string): string {\n  return encodeUriString(s).replace(/\\(/g, '%28').replace(/\\)/g, '%29').replace(/%26/gi, '&');\n}\n\nexport function decode(s: string): string {\n  return decodeURIComponent(s);\n}\n\n// Query keys/values should have the \"+\" replaced first, as \"+\" in a query string is \" \".\n// decodeURIComponent function will not decode \"+\" as a space.\nexport function decodeQuery(s: string): string {\n  return decode(s.replace(/\\+/g, '%20'));\n}\n\nexport function serializePath(path: UrlSegment): string {\n  return `${encodeUriSegment(path.path)}${serializeMatrixParams(path.parameters)}`;\n}\n\nfunction serializeMatrixParams(params: {[key: string]: string}): string {\n  return Object.keys(params)\n      .map(key => `;${encodeUriSegment(key)}=${encodeUriSegment(params[key])}`)\n      .join('');\n}\n\nfunction serializeQueryParams(params: {[key: string]: any}): string {\n  const strParams: string[] =\n      Object.keys(params)\n          .map((name) => {\n            const value = params[name];\n            return Array.isArray(value) ?\n                value.map(v => `${encodeUriQuery(name)}=${encodeUriQuery(v)}`).join('&') :\n                `${encodeUriQuery(name)}=${encodeUriQuery(value)}`;\n          })\n          .filter(s => !!s);\n\n  return strParams.length ? `?${strParams.join('&')}` : '';\n}\n\nconst SEGMENT_RE = /^[^\\/()?;=#]+/;\nfunction matchSegments(str: string): string {\n  const match = str.match(SEGMENT_RE);\n  return match ? match[0] : '';\n}\n\nconst QUERY_PARAM_RE = /^[^=?&#]+/;\n// Return the name of the query param at the start of the string or an empty string\nfunction matchQueryParams(str: string): string {\n  const match = str.match(QUERY_PARAM_RE);\n  return match ? match[0] : '';\n}\n\nconst QUERY_PARAM_VALUE_RE = /^[^&#]+/;\n// Return the value of the query param at the start of the string or an empty string\nfunction matchUrlQueryParamValue(str: string): string {\n  const match = str.match(QUERY_PARAM_VALUE_RE);\n  return match ? match[0] : '';\n}\n\nclass UrlParser {\n  private remaining: string;\n\n  constructor(private url: string) {\n    this.remaining = url;\n  }\n\n  parseRootSegment(): UrlSegmentGroup {\n    this.consumeOptional('/');\n\n    if (this.remaining === '' || this.peekStartsWith('?') || this.peekStartsWith('#')) {\n      return new UrlSegmentGroup([], {});\n    }\n\n    // The root segment group never has segments\n    return new UrlSegmentGroup([], this.parseChildren());\n  }\n\n  parseQueryParams(): Params {\n    const params: Params = {};\n    if (this.consumeOptional('?')) {\n      do {\n        this.parseQueryParam(params);\n      } while (this.consumeOptional('&'));\n    }\n    return params;\n  }\n\n  parseFragment(): string|null {\n    return this.consumeOptional('#') ? decodeURIComponent(this.remaining) : null;\n  }\n\n  private parseChildren(): {[outlet: string]: UrlSegmentGroup} {\n    if (this.remaining === '') {\n      return {};\n    }\n\n    this.consumeOptional('/');\n\n    const segments: UrlSegment[] = [];\n    if (!this.peekStartsWith('(')) {\n      segments.push(this.parseSegment());\n    }\n\n    while (this.peekStartsWith('/') && !this.peekStartsWith('//') && !this.peekStartsWith('/(')) {\n      this.capture('/');\n      segments.push(this.parseSegment());\n    }\n\n    let children: {[outlet: string]: UrlSegmentGroup} = {};\n    if (this.peekStartsWith('/(')) {\n      this.capture('/');\n      children = this.parseParens(true);\n    }\n\n    let res: {[outlet: string]: UrlSegmentGroup} = {};\n    if (this.peekStartsWith('(')) {\n      res = this.parseParens(false);\n    }\n\n    if (segments.length > 0 || Object.keys(children).length > 0) {\n      res[PRIMARY_OUTLET] = new UrlSegmentGroup(segments, children);\n    }\n\n    return res;\n  }\n\n  // parse a segment with its matrix parameters\n  // ie `name;k1=v1;k2`\n  private parseSegment(): UrlSegment {\n    const path = matchSegments(this.remaining);\n    if (path === '' && this.peekStartsWith(';')) {\n      throw new RuntimeError(\n          RuntimeErrorCode.EMPTY_PATH_WITH_PARAMS,\n          NG_DEV_MODE && `Empty path url segment cannot have parameters: '${this.remaining}'.`);\n    }\n\n    this.capture(path);\n    return new UrlSegment(decode(path), this.parseMatrixParams());\n  }\n\n  private parseMatrixParams(): {[key: string]: string} {\n    const params: {[key: string]: string} = {};\n    while (this.consumeOptional(';')) {\n      this.parseParam(params);\n    }\n    return params;\n  }\n\n  private parseParam(params: {[key: string]: string}): void {\n    const key = matchSegments(this.remaining);\n    if (!key) {\n      return;\n    }\n    this.capture(key);\n    let value: any = '';\n    if (this.consumeOptional('=')) {\n      const valueMatch = matchSegments(this.remaining);\n      if (valueMatch) {\n        value = valueMatch;\n        this.capture(value);\n      }\n    }\n\n    params[decode(key)] = decode(value);\n  }\n\n  // Parse a single query parameter `name[=value]`\n  private parseQueryParam(params: Params): void {\n    const key = matchQueryParams(this.remaining);\n    if (!key) {\n      return;\n    }\n    this.capture(key);\n    let value: any = '';\n    if (this.consumeOptional('=')) {\n      const valueMatch = matchUrlQueryParamValue(this.remaining);\n      if (valueMatch) {\n        value = valueMatch;\n        this.capture(value);\n      }\n    }\n\n    const decodedKey = decodeQuery(key);\n    const decodedVal = decodeQuery(value);\n\n    if (params.hasOwnProperty(decodedKey)) {\n      // Append to existing values\n      let currentVal = params[decodedKey];\n      if (!Array.isArray(currentVal)) {\n        currentVal = [currentVal];\n        params[decodedKey] = currentVal;\n      }\n      currentVal.push(decodedVal);\n    } else {\n      // Create a new value\n      params[decodedKey] = decodedVal;\n    }\n  }\n\n  // parse `(a/b//outlet_name:c/d)`\n  private parseParens(allowPrimary: boolean): {[outlet: string]: UrlSegmentGroup} {\n    const segments: {[key: string]: UrlSegmentGroup} = {};\n    this.capture('(');\n\n    while (!this.consumeOptional(')') && this.remaining.length > 0) {\n      const path = matchSegments(this.remaining);\n\n      const next = this.remaining[path.length];\n\n      // if is is not one of these characters, then the segment was unescaped\n      // or the group was not closed\n      if (next !== '/' && next !== ')' && next !== ';') {\n        throw new RuntimeError(\n            RuntimeErrorCode.UNPARSABLE_URL, NG_DEV_MODE && `Cannot parse url '${this.url}'`);\n      }\n\n      let outletName: string = undefined!;\n      if (path.indexOf(':') > -1) {\n        outletName = path.slice(0, path.indexOf(':'));\n        this.capture(outletName);\n        this.capture(':');\n      } else if (allowPrimary) {\n        outletName = PRIMARY_OUTLET;\n      }\n\n      const children = this.parseChildren();\n      segments[outletName] = Object.keys(children).length === 1 ? children[PRIMARY_OUTLET] :\n                                                                  new UrlSegmentGroup([], children);\n      this.consumeOptional('//');\n    }\n\n    return segments;\n  }\n\n  private peekStartsWith(str: string): boolean {\n    return this.remaining.startsWith(str);\n  }\n\n  // Consumes the prefix when it is present and returns whether it has been consumed\n  private consumeOptional(str: string): boolean {\n    if (this.peekStartsWith(str)) {\n      this.remaining = this.remaining.substring(str.length);\n      return true;\n    }\n    return false;\n  }\n\n  private capture(str: string): void {\n    if (!this.consumeOptional(str)) {\n      throw new RuntimeError(\n          RuntimeErrorCode.UNEXPECTED_VALUE_IN_URL, NG_DEV_MODE && `Expected \"${str}\".`);\n    }\n  }\n}\n\nexport function createRoot(rootCandidate: UrlSegmentGroup) {\n  return rootCandidate.segments.length > 0 ?\n      new UrlSegmentGroup([], {[PRIMARY_OUTLET]: rootCandidate}) :\n      rootCandidate;\n}\n\n/**\n * Recursively merges primary segment children into their parents and also drops empty children\n * (those which have no segments and no children themselves). The latter prevents serializing a\n * group into something like `/a(aux:)`, where `aux` is an empty child segment.\n */\nexport function squashSegmentGroup(segmentGroup: UrlSegmentGroup): UrlSegmentGroup {\n  const newChildren = {} as any;\n  for (const childOutlet of Object.keys(segmentGroup.children)) {\n    const child = segmentGroup.children[childOutlet];\n    const childCandidate = squashSegmentGroup(child);\n    // don't add empty children\n    if (childCandidate.segments.length > 0 || childCandidate.hasChildren()) {\n      newChildren[childOutlet] = childCandidate;\n    }\n  }\n  const s = new UrlSegmentGroup(segmentGroup.segments, newChildren);\n  return mergeTrivialChildren(s);\n}\n\n/**\n * When possible, merges the primary outlet child into the parent `UrlSegmentGroup`.\n *\n * When a segment group has only one child which is a primary outlet, merges that child into the\n * parent. That is, the child segment group's segments are merged into the `s` and the child's\n * children become the children of `s`. Think of this like a 'squash', merging the child segment\n * group into the parent.\n */\nfunction mergeTrivialChildren(s: UrlSegmentGroup): UrlSegmentGroup {\n  if (s.numberOfChildren === 1 && s.children[PRIMARY_OUTLET]) {\n    const c = s.children[PRIMARY_OUTLET];\n    return new UrlSegmentGroup(s.segments.concat(c.segments), c.children);\n  }\n\n  return s;\n}\n\nexport function isUrlTree(v: any): v is UrlTree {\n  return v instanceof UrlTree;\n}\n"]}