findFor method

Implementation

InferenceEngineProvider? findFor(InferenceModelSpec spec) {
  final matches = _registered.where((e) => e.canHandle(spec)).toList();
  if (matches.isEmpty) return null;
  // Composite-key sort (Dart's List.sort is NOT stable): descending priority,
  // then ascending original index so first-registered wins on equal priority.
  final indexed = [for (var i = 0; i < matches.length; i++) (i, matches[i])];
  indexed.sort((a, b) {
    final byPriority = b.$2.priority.compareTo(a.$2.priority);
    return byPriority != 0 ? byPriority : a.$1.compareTo(b.$1);
  });
  if (kDebugMode &&
      indexed.length > 1 &&
      indexed[0].$2.priority == indexed[1].$2.priority) {
    gemmaLog(
      '[flutter_gemma] Ambiguous: '
      '${indexed.map((e) => e.$2.name).join(", ")} all handle this spec at '
      'priority ${indexed[0].$2.priority}; using "${indexed[0].$2.name}" '
      '(first registered).',
    );
  }
  return indexed.first.$2;
}