Function parseMarbles

packages/test/src/marble-parser.ts:50–152

(
  marbles: string,
  values?: MarbleValueLookup<T>,
  error?: unknown,
  options: { hot?: boolean } = {}
)

}

export function parseMarbles<T>(
  marbles: string,
  values?: MarbleValueLookup<T>,
  error?: unknown,
  options: { hot?: boolean } = {}
): MarbleMessage<T>[] {
  const characters = [...marbles];
  const messages: MarbleMessage<T>[] = [];
  let frame = 0;
  let groupStart: number | undefined;
  let zeroFrame = 0;
  let hasZeroMarker = false;

  for (let index = 0; index < characters.length; index++) {
    const character = characters[index];
    if (character === undefined) {
      break;
    }
    if (isWhitespace(character)) {
      continue;
    }

    const duration = readDuration(characters, index);
    if (duration) {
      frame += duration.milliseconds;
      index += duration.length - 1;
      continue;
    }

    const messageFrame = groupStart ?? frame;
    switch (character) {
      case '-':
        frame += 1;
        break;
      case '(':
        if (groupStart !== undefined) {
          throw new Error('Nested marble groups are not supported.');
        }
        groupStart = frame;
        frame += 1;
        break;
      case ')':
        if (groupStart === undefined) {
          throw new Error('Found a closing marble group without an opening group.');
        }
        groupStart = undefined;
        frame += 1;
        break;
      case '|':
        messages.push({
          frame: messageFrame,
          notification: { kind: 'C' },
        });
        frame += 1;
        break;
      case '#':
        messages.push({
          frame: messageFrame,