Future _initialize()

in dwds/lib/src/debugging/metadata/provider.dart [183:223]
39 lines of code
10 McCabe index (conditional complexity)

  Future<void> _initialize() async {
    await _metadataMemoizer.runOnce(() async {
      var hasSoundNullSafety = true;
      var hasUnsoundNullSafety = true;
      // The merged metadata resides next to the entrypoint.
      // Assume that <name>.bootstrap.js has <name>.ddc_merged_metadata
      if (entrypoint.endsWith('.bootstrap.js')) {
        _logger.info('Loading debug metadata...');
        var serverPath =
            entrypoint.replaceAll('.bootstrap.js', '.ddc_merged_metadata');
        var merged = await _assetReader.metadataContents(serverPath);
        if (merged != null) {
          _addSdkMetadata();
          for (var contents in merged.split('\n')) {
            try {
              if (contents == null ||
                  contents.isEmpty ||
                  contents.startsWith('// intentionally empty:')) continue;
              var moduleJson = json.decode(contents);
              var metadata =
                  ModuleMetadata.fromJson(moduleJson as Map<String, dynamic>);
              _addMetadata(metadata);
              hasUnsoundNullSafety &= !metadata.soundNullSafety;
              hasSoundNullSafety &= metadata.soundNullSafety;
              _logger
                  .fine('Loaded debug metadata for module: ${metadata.name}');
            } catch (e) {
              _logger.warning('Failed to read metadata: $e');
              rethrow;
            }
          }
          if (!hasSoundNullSafety && !hasUnsoundNullSafety) {
            throw Exception('Metadata contains modules with mixed null safety');
          }
          _soundNullSafety = hasSoundNullSafety;
        }
        _logger.info('Loaded debug metadata '
            '(${_soundNullSafety ? "" : "no "}sound null safety)');
      }
    });
  }