Method matchSegmentAgainstRoute

packages/router/src/recognize.ts:402–493

(
    injector: EnvironmentInjector,
    rawSegment: UrlSegmentGroup,
    route: Route,
    segments: UrlSegment[],
    outlet: string,
    parentRoute: ActivatedRouteSnapshot,
  )

  }

  async matchSegmentAgainstRoute(
    injector: EnvironmentInjector,
    rawSegment: UrlSegmentGroup,
    route: Route,
    segments: UrlSegment[],
    outlet: string,
    parentRoute: ActivatedRouteSnapshot,
  ): Promise<TreeNode<ActivatedRouteSnapshot>> {
    if (this.abortSignal.aborted) {
      throw new Error(this.abortSignal.reason);
    }

    const createSnapshot = (result: MatchResult) =>
      this.createSnapshot(injector, route, result.consumedSegments, result.parameters, parentRoute);
    const result = await firstValueFrom(
      matchWithChecks(
        rawSegment,
        route,
        segments,
        injector,
        this.urlSerializer,
        createSnapshot,
        this.abortSignal,
      ),
    );
    if (route.path === '**') {
      // Prior versions of the route matching algorithm would stop matching at the wildcard route.
      // We should investigate a better strategy for any existing children. Otherwise, these
      // child segments are silently dropped from the navigation.
      // https://github.com/angular/angular/issues/40089
      rawSegment.children = {};
    }

    if (!result?.matched) {
      throw new NoMatch(rawSegment);
    }
    // If the route has an injector created from providers, we should start using that.
    injector = route._injector ?? injector;
    const {routes: childConfig} = await this.getChildConfig(injector, route, segments);
    const childInjector = route._loadedInjector ?? injector;

    const {parameters, consumedSegments, remainingSegments} = result;
    const snapshot = this.createSnapshot(
      injector,
      route,
      consumedSegments,
      parameters,
      parentRoute,
    );

    const {segmentGroup, slicedSegments} = split(
      rawSegment,
      consumedSegments,
      remainingSegments,
      childConfig,
      outlet,
    );