Function createUrlTreeFromSegmentGroup

packages/router/src/create_url_tree.ts:119–148

(
  relativeTo: UrlSegmentGroup,
  commands: readonly any[],
  queryParams: Params | null,
  fragment: string | null,
  urlSerializer: UrlSerializer,
)

}

export function createUrlTreeFromSegmentGroup(
  relativeTo: UrlSegmentGroup,
  commands: readonly any[],
  queryParams: Params | null,
  fragment: string | null,
  urlSerializer: UrlSerializer,
): UrlTree {
  let root = relativeTo;
  while (root.parent) {
    root = root.parent;
  }
  // There are no commands so the `UrlTree` goes to the same path as the one created from the
  // `UrlSegmentGroup`. All we need to do is update the `queryParams` and `fragment` without
  // applying any other logic.
  if (commands.length === 0) {
    return tree(root, root, root, queryParams, fragment, urlSerializer);
  }

  const nav = computeNavigation(commands);

  if (nav.toRoot()) {
    return tree(root, root, new UrlSegmentGroup([], {}), queryParams, fragment, urlSerializer);
  }

  const position = findStartingPositionForTargetGroup(nav, root, relativeTo);
  const newSegmentGroup = position.processChildren
    ? updateSegmentGroupChildren(position.segmentGroup, position.index, nav.commands)
    : updateSegmentGroup(position.segmentGroup, position.index, nav.commands);
  return tree(root, position.segmentGroup, newSegmentGroup, queryParams, fragment, urlSerializer);
}

function isMatrixParams(command: any): boolean {
  return typeof command === 'object' && command != null && !command.outlets && !command.segmentPath;