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/**
 * @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 { last } 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 === '**') {
        return createWildcardMatchResult(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 = {};
    Object.entries(res.posParams ?? {}).forEach(([k, v]) => {
        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 ?? {},
    };
}
function createWildcardMatchResult(segments) {
    return {
        matched: true,
        parameters: segments.length > 0 ? last(segments).parameters : {},
        consumedSegments: segments,
        remainingSegments: [],
        positionalParamSegments: {},
    };
}
export function split(segmentGroup, consumedSegments, slicedSegments, config) {
    if (slicedSegments.length > 0 &&
        containsEmptyPathMatchesWithNamedOutlets(segmentGroup, slicedSegments, config)) {
        const s = new UrlSegmentGroup(consumedSegments, createChildrenForEmptyPaths(config, new UrlSegmentGroup(slicedSegments, segmentGroup.children)));
        return { segmentGroup: s, slicedSegments: [] };
    }
    if (slicedSegments.length === 0 &&
        containsEmptyPathMatches(segmentGroup, slicedSegments, config)) {
        const s = new UrlSegmentGroup(segmentGroup.segments, addEmptyPathsToChildrenIfNeeded(segmentGroup, slicedSegments, config, segmentGroup.children));
        return { segmentGroup: s, slicedSegments };
    }
    const s = new UrlSegmentGroup(segmentGroup.segments, segmentGroup.children);
    return { segmentGroup: s, slicedSegments };
}
function addEmptyPathsToChildrenIfNeeded(segmentGroup, slicedSegments, routes, children) {
    const res = {};
    for (const r of routes) {
        if (emptyPathMatch(segmentGroup, slicedSegments, r) && !children[getOutlet(r)]) {
            const s = new UrlSegmentGroup([], {});
            res[getOutlet(r)] = s;
        }
    }
    return { ...children, ...res };
}
function createChildrenForEmptyPaths(routes, primarySegment) {
    const res = {};
    res[PRIMARY_OUTLET] = primarySegment;
    for (const r of routes) {
        if (r.path === '' && getOutlet(r) !== PRIMARY_OUTLET) {
            const s = new UrlSegmentGroup([], {});
            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;
    }
    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} 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 {last} 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,\n  route: Route,\n  segments: UrlSegment[],\n  injector: EnvironmentInjector,\n  urlSerializer: UrlSerializer,\n): 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).pipe(\n    map((v) => (v === true ? result : {...noMatch})),\n  );\n}\n\nexport function match(\n  segmentGroup: UrlSegmentGroup,\n  route: Route,\n  segments: UrlSegment[],\n): MatchResult {\n  if (route.path === '**') {\n    return createWildcardMatchResult(segments);\n  }\n\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  Object.entries(res.posParams ?? {}).forEach(([k, v]) => {\n    posParams[k] = v.path;\n  });\n  const parameters =\n    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\nfunction createWildcardMatchResult(segments: UrlSegment[]): MatchResult {\n  return {\n    matched: true,\n    parameters: segments.length > 0 ? last(segments)!.parameters : {},\n    consumedSegments: segments,\n    remainingSegments: [],\n    positionalParamSegments: {},\n  };\n}\n\nexport function split(\n  segmentGroup: UrlSegmentGroup,\n  consumedSegments: UrlSegment[],\n  slicedSegments: UrlSegment[],\n  config: Route[],\n) {\n  if (\n    slicedSegments.length > 0 &&\n    containsEmptyPathMatchesWithNamedOutlets(segmentGroup, slicedSegments, config)\n  ) {\n    const s = new UrlSegmentGroup(\n      consumedSegments,\n      createChildrenForEmptyPaths(\n        config,\n        new UrlSegmentGroup(slicedSegments, segmentGroup.children),\n      ),\n    );\n    return {segmentGroup: s, slicedSegments: []};\n  }\n\n  if (\n    slicedSegments.length === 0 &&\n    containsEmptyPathMatches(segmentGroup, slicedSegments, config)\n  ) {\n    const s = new UrlSegmentGroup(\n      segmentGroup.segments,\n      addEmptyPathsToChildrenIfNeeded(segmentGroup, slicedSegments, config, segmentGroup.children),\n    );\n    return {segmentGroup: s, slicedSegments};\n  }\n\n  const s = new UrlSegmentGroup(segmentGroup.segments, segmentGroup.children);\n  return {segmentGroup: s, slicedSegments};\n}\n\nfunction addEmptyPathsToChildrenIfNeeded(\n  segmentGroup: UrlSegmentGroup,\n  slicedSegments: UrlSegment[],\n  routes: Route[],\n  children: {[name: string]: UrlSegmentGroup},\n): {[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      res[getOutlet(r)] = s;\n    }\n  }\n  return {...children, ...res};\n}\n\nfunction createChildrenForEmptyPaths(\n  routes: Route[],\n  primarySegment: UrlSegmentGroup,\n): {[name: string]: UrlSegmentGroup} {\n  const res: {[name: string]: UrlSegmentGroup} = {};\n  res[PRIMARY_OUTLET] = primarySegment;\n\n  for (const r of routes) {\n    if (r.path === '' && getOutlet(r) !== PRIMARY_OUTLET) {\n      const s = new UrlSegmentGroup([], {});\n      res[getOutlet(r)] = s;\n    }\n  }\n  return res;\n}\n\nfunction containsEmptyPathMatchesWithNamedOutlets(\n  segmentGroup: UrlSegmentGroup,\n  slicedSegments: UrlSegment[],\n  routes: Route[],\n): boolean {\n  return routes.some(\n    (r) => emptyPathMatch(segmentGroup, slicedSegments, r) && getOutlet(r) !== PRIMARY_OUTLET,\n  );\n}\n\nfunction containsEmptyPathMatches(\n  segmentGroup: UrlSegmentGroup,\n  slicedSegments: UrlSegment[],\n  routes: Route[],\n): boolean {\n  return routes.some((r) => emptyPathMatch(segmentGroup, slicedSegments, r));\n}\n\nfunction emptyPathMatch(\n  segmentGroup: UrlSegmentGroup,\n  slicedSegments: UrlSegment[],\n  r: Route,\n): 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,\n  rawSegment: UrlSegmentGroup,\n  segments: UrlSegment[],\n  outlet: string,\n): 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 (\n    getOutlet(route) !== outlet &&\n    (outlet === PRIMARY_OUTLET || !emptyPathMatch(rawSegment, segments, route))\n  ) {\n    return false;\n  }\n  return match(rawSegment, route, segments).matched;\n}\n\nexport function noLeftoversInUrl(\n  segmentGroup: UrlSegmentGroup,\n  segments: UrlSegment[],\n  outlet: string,\n): boolean {\n  return segments.length === 0 && !segmentGroup.children[outlet];\n}\n"]}