updateFileContexts method

Future<bool> updateFileContexts(Set<String> filePaths)

Inform the analyzer that the provided filePaths have been updated.

Refreshes the Dart analysis context for the changed files and returns true if any of them are (or were) endpoint files, meaning code generation should run. The actual full analysis is deferred to the next analyze call.

Implementation

Future<bool> updateFileContexts(Set<String> filePaths) async {
  // Only consider files within the tracked directory.
  final relevantPaths = filePaths
      .where((f) => p.isWithin(absoluteIncludedPaths, p.absolute(f)))
      .toSet();

  final errorsBefore = _fileCache.values.any((r) => r.hadErrors);
  final keysBefore = _fileCache.keys.toSet();

  await analyze(
    collector: CodeGenerationCollector(),
    changedFiles: relevantPaths,
  );

  final errorsAfter = _fileCache.values.any((r) => r.hadErrors);
  final keysAfter = _fileCache.keys.toSet();

  if (errorsBefore ||
      errorsAfter ||
      keysBefore.length != keysAfter.length ||
      keysAfter.difference(keysBefore).isNotEmpty) {
    return true;
  }

  // Editing methods on an existing endpoint does not add/remove cache keys,
  // but generated protocol must still be refreshed (otherwise stale
  // generated Dart can break analysis/compile before the next generate).
  for (final path in relevantPaths) {
    if (!path.endsWith('.dart') || path.endsWith('_test.dart')) continue;
    if (_fileCache.containsKey(path)) return true;
    if (_isEndpointFile(File(path))) return true;
  }

  return false;
}