//============================================================================
// Copyright 2009-2020 ECMWF.
// This software is licensed under the terms of the Apache Licence version 2.0
// which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
// In applying this licence, ECMWF does not waive the privileges and immunities
// granted to it by virtue of its status as an intergovernmental organisation
// nor does it submit to any jurisdiction.
//============================================================================

#ifndef FLAGSET_HPP_
#define FLAGSET_HPP_

template <class T>
class FlagSet
{
public:
    FlagSet()= default;
    FlagSet(T t)  {set(t);}

    void clear() {flags_=0;}
    void set(T flag ) { flags_ |= (1 << flag); }
    void unset(T flag ) { flags_ &= ~ (1 << flag); }
    bool isSet(T flag) const { return (flags_ >> flag) & 1; }
    bool isEmpty() const {return flags_==0;}
    bool sameAs(T flag) const {return flags_ == flag;}

private:
    int flags_{0};

};

#endif // FLAGSET_HPP_
