/*
 * Normaliz
 * Copyright (C) 2007-2014  Winfried Bruns, Bogdan Ichim, Christof Soeger
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * As an exception, when this program is distributed through (i) the App Store
 * by Apple Inc.; (ii) the Mac App Store by Apple Inc.; or (iii) Google Play
 * by Google Inc., then that store may impose any digital rights management,
 * device limits and/or redistribution restrictions that are required by its
 * terms of service.
 */

#ifndef CONE_PROPERTY_H_
#define CONE_PROPERTY_H_

#include <bitset>
#include <ostream>

namespace libnormaliz {

/* An enumeration of things, that can be computed for a cone.
 * The namespace prevents interfering with other names.
 * Remember to change also the string conversion if you change this enum!
 */
namespace ConeProperty {
    enum Enum {
        // goals that can be computed
        Generators,
        ExtremeRays,
        VerticesOfPolyhedron,
        SupportHyperplanes,
        TriangulationSize,
        TriangulationDetSum,
        Triangulation,
        Multiplicity,
        RecessionRank,
        AffineDim,
        ModuleRank,
        HilbertBasis,
        ModuleGenerators,
        Deg1Elements,
        HilbertSeries,
        Grading,
        IsPointed,
        IsDeg1ExtremeRays,
        IsDeg1HilbertBasis,
        IsIntegrallyClosed,
        WitnessNotIntegrallyClosed,
        OriginalMonoidGenerators,
        IsReesPrimary,
        ReesPrimaryMultiplicity,
        StanleyDec,
        ExcludedFaces,
        Dehomogenization,
        InclusionExclusionData,
        Sublattice,
        ClassGroup,
        ModuleGeneratorsOverOriginalMonoid,
        // compute options
        Approximate,
        BottomDecomposition,
        DefaultMode,
        DualMode,
        KeepOrder,
        IntegerHull,
        MaximalSubspace,
        EnumSize // this has to be the last entry, to get the number of entries in the enum
    }; // remember to change also the string conversion function if you change this enum
}

class ConeProperties {
public:
    /* Constructors */
    ConeProperties();
    ConeProperties(ConeProperty::Enum);
    ConeProperties(ConeProperty::Enum, ConeProperty::Enum);
    ConeProperties(ConeProperty::Enum, ConeProperty::Enum, ConeProperty::Enum);
    ConeProperties(const std::bitset<ConeProperty::EnumSize>&);

    /* set properties */
    ConeProperties& set(ConeProperty::Enum, bool value=true);
    ConeProperties& set(const std::string s, bool value=true);
    ConeProperties& set(ConeProperty::Enum, ConeProperty::Enum);
    ConeProperties& set(ConeProperty::Enum, ConeProperty::Enum, ConeProperty::Enum);
    ConeProperties& set(const ConeProperties&);

    /* reset (=unset) properties */
    ConeProperties& reset(ConeProperty::Enum Property);
    ConeProperties& reset(const ConeProperties&);
    ConeProperties& reset_compute_options();

    /* test which/how many properties are set */
    bool test(ConeProperty::Enum Property) const;
    bool any() const;
    bool none() const;
    size_t count () const;

    /* return the restriction of this to the goals / options */
    ConeProperties goals();
    ConeProperties options();

    /* the following methods are used internally */
    void set_preconditions();    // activate properties which are needed implicitly
    void prepare_compute_options(bool inhomogeneous);
    void check_sanity(bool inhomogeneous);

    /* print it in a nice way */
    friend std::ostream& operator<<(std::ostream&, const ConeProperties&);


private:
    std::bitset<ConeProperty::EnumSize> CPs;

};

// conversion to/from strings
bool isConeProperty(ConeProperty::Enum& cp, const std::string& s);
ConeProperty::Enum toConeProperty(const std::string&);
const std::string& toString(ConeProperty::Enum);
std::ostream& operator<<(std::ostream&, const ConeProperties&);

}

#endif /* CONE_PROPERTY_H_ */
