Value.h

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/* ----------------------------------------------------------------------------

 * GTSAM Copyright 2010, Georgia Tech Research Corporation, 
 * Atlanta, Georgia 30332-0415
 * All Rights Reserved
 * Authors: Frank Dellaert, et al. (see THANKS for the full author list)

 * See LICENSE for the license information

 * -------------------------------------------------------------------------- */

#pragma once

#include <gtsam/config.h>      // Configuration from CMake

#include <gtsam/base/Vector.h>
#include <boost/serialization/assume_abstract.hpp>
#include <memory>

namespace gtsam {

  class GTSAM_EXPORT Value {
  public:

    virtual Value* clone_() const = 0;

    virtual void deallocate_() const = 0;

    virtual boost::shared_ptr<Value> clone() const = 0;

    virtual bool equals_(const Value& other, double tol = 1e-9) const = 0;

    virtual void print(const std::string& str = "") const = 0;

    virtual size_t dim() const = 0;

    virtual Value* retract_(const Vector& delta) const = 0;

    virtual Vector localCoordinates_(const Value& value) const = 0;

    virtual Value& operator=(const Value& /*rhs*/) {
      //needs a empty definition so recursion in implicit derived assignment operators work
     return *this;
    }

    template<typename ValueType>
    const ValueType& cast() const;

    virtual ~Value() {}

  private:
    friend class boost::serialization::access;
    template<class ARCHIVE>
    void serialize(ARCHIVE & /*ar*/, const unsigned int /*version*/) {
    }

  };

} /* namespace gtsam */

BOOST_SERIALIZATION_ASSUME_ABSTRACT(gtsam::Value)