ConstraintFactory.h

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// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2007 ISIS Rutherford Appleton Laboratory UKRI,
//   NScD Oak Ridge National Laboratory, European Spallation Source,
//   Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
// SPDX - License - Identifier: GPL - 3.0 +
#pragma once
 
//----------------------------------------------------------------------
// Includes
//----------------------------------------------------------------------
#include "MantidAPI/DllConfig.h"
#include "MantidKernel/DynamicFactory.h"
#include "MantidKernel/SingletonHolder.h"
#include <vector>
 
namespace Mantid {
 
namespace API {
 
//----------------------------------------------------------------------
// Forward declarations
//----------------------------------------------------------------------
class IConstraint;
class IFunction;
class Expression;
 
class MANTID_API_DLL ConstraintFactoryImpl final : public Kernel::DynamicFactory<IConstraint> {
public:
  ConstraintFactoryImpl(const ConstraintFactoryImpl &) = delete;
  ConstraintFactoryImpl &operator=(const ConstraintFactoryImpl &) = delete;
  IConstraint *createInitialized(IFunction *fun, const std::string &input, bool isDefault = false) const;
  IConstraint *createInitialized(IFunction *fun, const Expression &expr, bool isDefault = false) const;
 
private:
  friend struct Mantid::Kernel::CreateUsingNew<ConstraintFactoryImpl>;
 
  ConstraintFactoryImpl();
  ~ConstraintFactoryImpl() override = default;
};
 
using ConstraintFactory = Mantid::Kernel::SingletonHolder<ConstraintFactoryImpl>;
 
} // namespace API
} // namespace Mantid
 
namespace Mantid {
namespace Kernel {
EXTERN_MANTID_API template class MANTID_API_DLL Mantid::Kernel::SingletonHolder<Mantid::API::ConstraintFactoryImpl>;
}
} // namespace Mantid
 
#define DECLARE_CONSTRAINT(classname)                                                                                  \
  namespace {                                                                                                          \
  Mantid::Kernel::RegistrationHelper register_constraint_##classname(                                                  \
      ((Mantid::API::ConstraintFactory::Instance().subscribe<classname>(#classname)), 0));                             \
  }