ProjectionHandler.hh

// -*- C++ -*-
#ifndef RIVET_ProjectionHandler_HH
#define RIVET_ProjectionHandler_HH
 
// @todo all thread/mutex code belongs to a temporary fix to allow for
// basic threading
#include "Rivet/Projection.fhh"
#include "Rivet/Config/RivetCommon.hh"
#include <mutex>
#include <thread>
 
namespace Rivet {
 

  typedef std::shared_ptr<const Projection> ProjHandle;
 
  // Forward declaration.
  class ProjectionApplier;

  class ProjectionHandler {
  public:

    friend class ProjectionApplier;

    typedef set<ProjHandle> ProjHandles;

    typedef map<string, ProjHandle> NamedProjs;

    enum ProjDepth { SHALLOW, DEEP };
 
 
  private:

    typedef map<const ProjectionApplier*, NamedProjs> NamedProjsMap;

    NamedProjsMap _namedprojs;

    ProjHandles _projs;
 
 
  public:


    ~ProjectionHandler() = default;

    ProjectionHandler& operator=(const ProjectionHandler&) = delete;

    ProjectionHandler(const ProjectionHandler&) = delete;

    ProjectionHandler() = default;
 
  public:

    const Projection& registerProjection(const ProjectionApplier& parent,
                                         const Projection& proj,
                                         const string& name);
 
 
  private:


    ProjHandle _getEquiv(const Projection& proj) const;

    unique_ptr<Projection> _clone(const Projection& proj);

    const Projection& _register(const ProjectionApplier& parent, ProjHandle proj, const string& name);

    string _getStatus() const;

    bool _checkDuplicate(const ProjectionApplier& parent, const Projection& proj, const string& name) const;

 
 
  public:


    bool hasProjection(const ProjectionApplier& parent, const string& name) const;

    const Projection& getProjection(const ProjectionApplier& parent, const string& name) const;

    set<const Projection*> getChildProjections(const ProjectionApplier& parent,
                                               ProjDepth depth = SHALLOW) const;
 
 
  private:

    void removeProjectionApplier(ProjectionApplier& parent);
 
 
  private:
 
    // /// Get map of named projections belonging to @a parent.
    // /// Throws an exception if @a parent has not got any registered projections.
    // const NamedProjs& namedProjs(const ProjectionApplier* parent) const {
    //   NamedProjsMap::const_iterator nps = _namedprojs.find(parent);
    //   if (nps == _namedprojs.end()) {
    //     stringstream ss;
    //     ss << "No NamedProjs registered for parent " << parent;
    //     throw Error(ss.str());
    //   }
    //   return *nps;
    // }
  };
 
 
}
 
#endif