Future complete()

in lib/src/analysis_server.dart [141:189]
40 lines of code
6 McCabe index (conditional complexity)

  Future<proto.CompleteResponse> complete(String src, int offset) async {
    final sources = <String, String>{kMainDart: src};
    final location = Location(kMainDart, offset);

    final results =
        await _completeImpl(sources, location.sourceName, location.offset);
    var suggestions = results.results;

    final source = sources[location.sourceName]!;
    final prefix = source.substring(results.replacementOffset, location.offset);
    suggestions = suggestions.where((suggestion) {
      return suggestion.completion
          .toLowerCase()
          .startsWith(prefix.toLowerCase());
    }).where((CompletionSuggestion suggestion) {
      // We do not want to enable arbitrary discovery of file system resources.

      // In order to avoid returning local file paths, we only allow returning
      // IMPORT kinds that are dart: or package: imports.
      if (suggestion.kind == 'IMPORT') {
        final completion = suggestion.completion;
        return completion.startsWith('dart:') ||
            completion.startsWith('package:');
      } else {
        return true;
      }
    }).toList();

    suggestions.sort((CompletionSuggestion x, CompletionSuggestion y) {
      if (x.relevance == y.relevance) {
        return x.completion.compareTo(y.completion);
      } else {
        return y.relevance.compareTo(x.relevance);
      }
    });

    return proto.CompleteResponse()
      ..replacementOffset = results.replacementOffset
      ..replacementLength = results.replacementLength
      ..completions
          .addAll(suggestions.map((CompletionSuggestion c) => proto.Completion()
            ..completion.addAll(c.toMap().map((key, value) {
              // TODO: Properly support Lists, Maps (this is a hack).
              if (value is Map || value is List) {
                value = json.encode(value);
              }
              return MapEntry(key.toString(), value.toString());
            }))));
  }