code: function parseSelectorContent() {
      outer: while (!source.isAtEnd()) {
        var token = source.first();
  
        switch (token) {
          case '}':
            source.shift();
            break outer;
  
          case '/':
            cssComment();
            break;
          case "'":
            singleQuoteString();
            break;
          case '"':
            doubleQuoteString();
            break;
          default:
            source.shift();
        }
      }
    }
docs: .class { PARSING_CONTEXT }