parseSessionEntryLinesSync function

SessionParseResult parseSessionEntryLinesSync(SessionParseBatch batch)

Parses one batch right here — the inline executor's body and the isolate worker's entry point share it, so both paths run the exact same parse code (issue #199 AC4 parity).

Implementation

SessionParseResult parseSessionEntryLinesSync(SessionParseBatch batch) {
  final records = List<SessionRecord?>.filled(
    batch.lines.length,
    null,
    growable: false,
  );
  for (var i = 0; i < batch.lines.length; i++) {
    try {
      // Issue #503 round 3b: the resume boundary walk parses giant
      // `custom` ledger payloads header-only (data stubbed to null) —
      // they count zero context tokens, so the full decode was pure
      // cost. Falls back to the full decode on any shape mismatch.
      final shallow = batch.shallowGiantCustoms
          ? parseShallowCustomRecord(batch.lines[i])
          : null;
      records[i] =
          shallow ??
          parseSessionEntryLine(
            batch.lines[i],
            batch.filePath,
            batch.firstLineNumber + i,
          );
    } on Object {
      records[i] = null; // torn/foreign line: data, not an error
    }
  }
  return SessionParseResult(records);
}