Function createNewSegmentGroup

packages/router/src/create_url_tree.ts:512–546

(
  segmentGroup: UrlSegmentGroup,
  startIndex: number,
  commands: readonly any[],
)

}

function createNewSegmentGroup(
  segmentGroup: UrlSegmentGroup,
  startIndex: number,
  commands: readonly any[],
): UrlSegmentGroup {
  const paths = segmentGroup.segments.slice(0, startIndex);

  let i = 0;
  while (i < commands.length) {
    const command = commands[i];
    if (isCommandWithOutlets(command)) {
      const children = createNewSegmentChildren(command.outlets);
      return new UrlSegmentGroup(paths, children);
    }

    // if we start with an object literal, we need to reuse the path part from the segment
    if (i === 0 && isMatrixParams(commands[0])) {
      const p = segmentGroup.segments[startIndex];
      paths.push(new UrlSegment(p.path, stringify(commands[0])));
      i++;
      continue;
    }

    const curr = isCommandWithOutlets(command) ? command.outlets[PRIMARY_OUTLET] : `${command}`;
    const next = i < commands.length - 1 ? commands[i + 1] : null;
    if (curr && next && isMatrixParams(next)) {
      paths.push(new UrlSegment(curr, stringify(next)));
      i += 2;
    } else {
      paths.push(new UrlSegment(curr, {}));
      i++;
    }
  }
  return new UrlSegmentGroup(paths, {});
}

function createNewSegmentChildren(outlets: {[name: string]: readonly unknown[] | string}): {
  [outlet: string]: UrlSegmentGroup;