if (_map == _globalMap) {
if (_map == _globalMap)
  public Var getVar(String name)  {    Var var = _map.get(name);    if (var != null)      return var;        var = getRef(name);    if (var == null) {      var = new Var();      if (_map == _globalMap) {        // php/379c        var.setGlobal();      }      _map.put(name, var);    }    return var;  }