@angular/router
Version:
Angular - the routing library
154 lines • 24.6 kB
JavaScript
/**
* @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 { of } from 'rxjs';
import { map } from 'rxjs/operators';
import { runCanMatchGuards } from '../operators/check_guards';
import { defaultUrlMatcher, PRIMARY_OUTLET } from '../shared';
import { UrlSegmentGroup } from '../url_tree';
import { forEach } from './collection';
import { getOrCreateRouteInjectorIfNeeded, getOutlet } from './config';
const noMatch = {
matched: false,
consumedSegments: [],
remainingSegments: [],
parameters: {},
positionalParamSegments: {}
};
export function matchWithChecks(segmentGroup, route, segments, injector, urlSerializer) {
const result = match(segmentGroup, route, segments);
if (!result.matched) {
return of(result);
}
// Only create the Route's `EnvironmentInjector` if it matches the attempted
// navigation
injector = getOrCreateRouteInjectorIfNeeded(route, injector);
return runCanMatchGuards(injector, route, segments, urlSerializer)
.pipe(map((v) => v === true ? result : { ...noMatch }));
}
export function match(segmentGroup, route, segments) {
if (route.path === '') {
if (route.pathMatch === 'full' && (segmentGroup.hasChildren() || segments.length > 0)) {
return { ...noMatch };
}
return {
matched: true,
consumedSegments: [],
remainingSegments: segments,
parameters: {},
positionalParamSegments: {}
};
}
const matcher = route.matcher || defaultUrlMatcher;
const res = matcher(segments, segmentGroup, route);
if (!res)
return { ...noMatch };
const posParams = {};
forEach(res.posParams, (v, k) => {
posParams[k] = v.path;
});
const parameters = res.consumed.length > 0 ?
{ ...posParams, ...res.consumed[res.consumed.length - 1].parameters } :
posParams;
return {
matched: true,
consumedSegments: res.consumed,
remainingSegments: segments.slice(res.consumed.length),
// TODO(atscott): investigate combining parameters and positionalParamSegments
parameters,
positionalParamSegments: res.posParams ?? {}
};
}
export function split(segmentGroup, consumedSegments, slicedSegments, config) {
if (slicedSegments.length > 0 &&
containsEmptyPathMatchesWithNamedOutlets(segmentGroup, slicedSegments, config)) {
const s = new UrlSegmentGroup(consumedSegments, createChildrenForEmptyPaths(segmentGroup, consumedSegments, config, new UrlSegmentGroup(slicedSegments, segmentGroup.children)));
s._sourceSegment = segmentGroup;
s._segmentIndexShift = consumedSegments.length;
return { segmentGroup: s, slicedSegments: [] };
}
if (slicedSegments.length === 0 &&
containsEmptyPathMatches(segmentGroup, slicedSegments, config)) {
const s = new UrlSegmentGroup(segmentGroup.segments, addEmptyPathsToChildrenIfNeeded(segmentGroup, consumedSegments, slicedSegments, config, segmentGroup.children));
s._sourceSegment = segmentGroup;
s._segmentIndexShift = consumedSegments.length;
return { segmentGroup: s, slicedSegments };
}
const s = new UrlSegmentGroup(segmentGroup.segments, segmentGroup.children);
s._sourceSegment = segmentGroup;
s._segmentIndexShift = consumedSegments.length;
return { segmentGroup: s, slicedSegments };
}
function addEmptyPathsToChildrenIfNeeded(segmentGroup, consumedSegments, slicedSegments, routes, children) {
const res = {};
for (const r of routes) {
if (emptyPathMatch(segmentGroup, slicedSegments, r) && !children[getOutlet(r)]) {
const s = new UrlSegmentGroup([], {});
s._sourceSegment = segmentGroup;
s._segmentIndexShift = consumedSegments.length;
res[getOutlet(r)] = s;
}
}
return { ...children, ...res };
}
function createChildrenForEmptyPaths(segmentGroup, consumedSegments, routes, primarySegment) {
const res = {};
res[PRIMARY_OUTLET] = primarySegment;
primarySegment._sourceSegment = segmentGroup;
primarySegment._segmentIndexShift = consumedSegments.length;
for (const r of routes) {
if (r.path === '' && getOutlet(r) !== PRIMARY_OUTLET) {
const s = new UrlSegmentGroup([], {});
s._sourceSegment = segmentGroup;
s._segmentIndexShift = consumedSegments.length;
res[getOutlet(r)] = s;
}
}
return res;
}
function containsEmptyPathMatchesWithNamedOutlets(segmentGroup, slicedSegments, routes) {
return routes.some(r => emptyPathMatch(segmentGroup, slicedSegments, r) && getOutlet(r) !== PRIMARY_OUTLET);
}
function containsEmptyPathMatches(segmentGroup, slicedSegments, routes) {
return routes.some(r => emptyPathMatch(segmentGroup, slicedSegments, r));
}
function emptyPathMatch(segmentGroup, slicedSegments, r) {
if ((segmentGroup.hasChildren() || slicedSegments.length > 0) && r.pathMatch === 'full') {
return false;
}
return r.path === '';
}
/**
* Determines if `route` is a path match for the `rawSegment`, `segments`, and `outlet` without
* verifying that its children are a full match for the remainder of the `rawSegment` children as
* well.
*/
export function isImmediateMatch(route, rawSegment, segments, outlet) {
// We allow matches to empty paths when the outlets differ so we can match a url like `/(b:b)` to
// a config like
// * `{path: '', children: [{path: 'b', outlet: 'b'}]}`
// or even
// * `{path: '', outlet: 'a', children: [{path: 'b', outlet: 'b'}]`
//
// The exception here is when the segment outlet is for the primary outlet. This would
// result in a match inside the named outlet because all children there are written as primary
// outlets. So we need to prevent child named outlet matches in a url like `/b` in a config like
// * `{path: '', outlet: 'x' children: [{path: 'b'}]}`
// This should only match if the url is `/(x:b)`.
if (getOutlet(route) !== outlet &&
(outlet === PRIMARY_OUTLET || !emptyPathMatch(rawSegment, segments, route))) {
return false;
}
if (route.path === '**') {
return true;
}
return match(rawSegment, route, segments).matched;
}
export function noLeftoversInUrl(segmentGroup, segments, outlet) {
return segments.length === 0 && !segmentGroup.children[outlet];
}
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {EnvironmentInjector, Injector} from '@angular/core';\nimport {Observable, of} from 'rxjs';\nimport {map} from 'rxjs/operators';\n\nimport {Route} from '../models';\nimport {runCanMatchGuards} from '../operators/check_guards';\nimport {defaultUrlMatcher, PRIMARY_OUTLET} from '../shared';\nimport {UrlSegment, UrlSegmentGroup, UrlSerializer} from '../url_tree';\n\nimport {forEach} from './collection';\nimport {getOrCreateRouteInjectorIfNeeded, getOutlet} from './config';\n\nexport interface MatchResult {\n  matched: boolean;\n  consumedSegments: UrlSegment[];\n  remainingSegments: UrlSegment[];\n  parameters: {[k: string]: string};\n  positionalParamSegments: {[k: string]: UrlSegment};\n}\n\nconst noMatch: MatchResult = {\n  matched: false,\n  consumedSegments: [],\n  remainingSegments: [],\n  parameters: {},\n  positionalParamSegments: {}\n};\n\nexport function matchWithChecks(\n    segmentGroup: UrlSegmentGroup, route: Route, segments: UrlSegment[],\n    injector: EnvironmentInjector, urlSerializer: UrlSerializer): Observable<MatchResult> {\n  const result = match(segmentGroup, route, segments);\n  if (!result.matched) {\n    return of(result);\n  }\n\n  // Only create the Route's `EnvironmentInjector` if it matches the attempted\n  // navigation\n  injector = getOrCreateRouteInjectorIfNeeded(route, injector);\n  return runCanMatchGuards(injector, route, segments, urlSerializer)\n      .pipe(\n          map((v) => v === true ? result : {...noMatch}),\n      );\n}\n\nexport function match(\n    segmentGroup: UrlSegmentGroup, route: Route, segments: UrlSegment[]): MatchResult {\n  if (route.path === '') {\n    if (route.pathMatch === 'full' && (segmentGroup.hasChildren() || segments.length > 0)) {\n      return {...noMatch};\n    }\n\n    return {\n      matched: true,\n      consumedSegments: [],\n      remainingSegments: segments,\n      parameters: {},\n      positionalParamSegments: {}\n    };\n  }\n\n  const matcher = route.matcher || defaultUrlMatcher;\n  const res = matcher(segments, segmentGroup, route);\n  if (!res) return {...noMatch};\n\n  const posParams: {[n: string]: string} = {};\n  forEach(res.posParams!, (v: UrlSegment, k: string) => {\n    posParams[k] = v.path;\n  });\n  const parameters = res.consumed.length > 0 ?\n      {...posParams, ...res.consumed[res.consumed.length - 1].parameters} :\n      posParams;\n\n  return {\n    matched: true,\n    consumedSegments: res.consumed,\n    remainingSegments: segments.slice(res.consumed.length),\n    // TODO(atscott): investigate combining parameters and positionalParamSegments\n    parameters,\n    positionalParamSegments: res.posParams ?? {}\n  };\n}\n\nexport function split(\n    segmentGroup: UrlSegmentGroup, consumedSegments: UrlSegment[], slicedSegments: UrlSegment[],\n    config: Route[]) {\n  if (slicedSegments.length > 0 &&\n      containsEmptyPathMatchesWithNamedOutlets(segmentGroup, slicedSegments, config)) {\n    const s = new UrlSegmentGroup(\n        consumedSegments,\n        createChildrenForEmptyPaths(\n            segmentGroup, consumedSegments, config,\n            new UrlSegmentGroup(slicedSegments, segmentGroup.children)));\n    s._sourceSegment = segmentGroup;\n    s._segmentIndexShift = consumedSegments.length;\n    return {segmentGroup: s, slicedSegments: []};\n  }\n\n  if (slicedSegments.length === 0 &&\n      containsEmptyPathMatches(segmentGroup, slicedSegments, config)) {\n    const s = new UrlSegmentGroup(\n        segmentGroup.segments,\n        addEmptyPathsToChildrenIfNeeded(\n            segmentGroup, consumedSegments, slicedSegments, config, segmentGroup.children));\n    s._sourceSegment = segmentGroup;\n    s._segmentIndexShift = consumedSegments.length;\n    return {segmentGroup: s, slicedSegments};\n  }\n\n  const s = new UrlSegmentGroup(segmentGroup.segments, segmentGroup.children);\n  s._sourceSegment = segmentGroup;\n  s._segmentIndexShift = consumedSegments.length;\n  return {segmentGroup: s, slicedSegments};\n}\n\nfunction addEmptyPathsToChildrenIfNeeded(\n    segmentGroup: UrlSegmentGroup, consumedSegments: UrlSegment[], slicedSegments: UrlSegment[],\n    routes: Route[],\n    children: {[name: string]: UrlSegmentGroup}): {[name: string]: UrlSegmentGroup} {\n  const res: {[name: string]: UrlSegmentGroup} = {};\n  for (const r of routes) {\n    if (emptyPathMatch(segmentGroup, slicedSegments, r) && !children[getOutlet(r)]) {\n      const s = new UrlSegmentGroup([], {});\n      s._sourceSegment = segmentGroup;\n      s._segmentIndexShift = consumedSegments.length;\n      res[getOutlet(r)] = s;\n    }\n  }\n  return {...children, ...res};\n}\n\nfunction createChildrenForEmptyPaths(\n    segmentGroup: UrlSegmentGroup, consumedSegments: UrlSegment[], routes: Route[],\n    primarySegment: UrlSegmentGroup): {[name: string]: UrlSegmentGroup} {\n  const res: {[name: string]: UrlSegmentGroup} = {};\n  res[PRIMARY_OUTLET] = primarySegment;\n  primarySegment._sourceSegment = segmentGroup;\n  primarySegment._segmentIndexShift = consumedSegments.length;\n\n  for (const r of routes) {\n    if (r.path === '' && getOutlet(r) !== PRIMARY_OUTLET) {\n      const s = new UrlSegmentGroup([], {});\n      s._sourceSegment = segmentGroup;\n      s._segmentIndexShift = consumedSegments.length;\n      res[getOutlet(r)] = s;\n    }\n  }\n  return res;\n}\n\nfunction containsEmptyPathMatchesWithNamedOutlets(\n    segmentGroup: UrlSegmentGroup, slicedSegments: UrlSegment[], routes: Route[]): boolean {\n  return routes.some(\n      r => emptyPathMatch(segmentGroup, slicedSegments, r) && getOutlet(r) !== PRIMARY_OUTLET);\n}\n\nfunction containsEmptyPathMatches(\n    segmentGroup: UrlSegmentGroup, slicedSegments: UrlSegment[], routes: Route[]): boolean {\n  return routes.some(r => emptyPathMatch(segmentGroup, slicedSegments, r));\n}\n\nfunction emptyPathMatch(\n    segmentGroup: UrlSegmentGroup, slicedSegments: UrlSegment[], r: Route): boolean {\n  if ((segmentGroup.hasChildren() || slicedSegments.length > 0) && r.pathMatch === 'full') {\n    return false;\n  }\n\n  return r.path === '';\n}\n\n/**\n * Determines if `route` is a path match for the `rawSegment`, `segments`, and `outlet` without\n * verifying that its children are a full match for the remainder of the `rawSegment` children as\n * well.\n */\nexport function isImmediateMatch(\n    route: Route, rawSegment: UrlSegmentGroup, segments: UrlSegment[], outlet: string): boolean {\n  // We allow matches to empty paths when the outlets differ so we can match a url like `/(b:b)` to\n  // a config like\n  // * `{path: '', children: [{path: 'b', outlet: 'b'}]}`\n  // or even\n  // * `{path: '', outlet: 'a', children: [{path: 'b', outlet: 'b'}]`\n  //\n  // The exception here is when the segment outlet is for the primary outlet. This would\n  // result in a match inside the named outlet because all children there are written as primary\n  // outlets. So we need to prevent child named outlet matches in a url like `/b` in a config like\n  // * `{path: '', outlet: 'x' children: [{path: 'b'}]}`\n  // This should only match if the url is `/(x:b)`.\n  if (getOutlet(route) !== outlet &&\n      (outlet === PRIMARY_OUTLET || !emptyPathMatch(rawSegment, segments, route))) {\n    return false;\n  }\n  if (route.path === '**') {\n    return true;\n  }\n  return match(rawSegment, route, segments).matched;\n}\n\nexport function noLeftoversInUrl(\n    segmentGroup: UrlSegmentGroup, segments: UrlSegment[], outlet: string): boolean {\n  return segments.length === 0 && !segmentGroup.children[outlet];\n}\n"]}