/usr/include/camp/detail/classmanager.hpp is in libcamp0.7-dev 0.7.1.1-1ubuntu2.
This file is owned by root:root, with mode 0o644.
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**
** Copyright (C) 2009-2010 TECHNOGERMA Systems France and/or its subsidiary(-ies).
** Contact: Technogerma Systems France Information (contact@technogerma.fr)
**
** This file is part of the CAMP library.
**
** CAMP is free software: you can redistribute it and/or modify
** it under the terms of the GNU Lesser General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** CAMP 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 Lesser General Public License for more details.
**
** You should have received a copy of the GNU Lesser General Public License
** along with CAMP. If not, see <http://www.gnu.org/licenses/>.
**
****************************************************************************/
#ifndef CAMP_DETAIL_CLASSMANAGER_HPP
#define CAMP_DETAIL_CLASSMANAGER_HPP
#include <camp/config.hpp>
#include <camp/detail/observernotifier.hpp>
#ifndef Q_MOC_RUN
#include <boost/noncopyable.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/multi_index_container.hpp>
#include <boost/multi_index/member.hpp>
#include <boost/multi_index/ordered_index.hpp>
#endif
#include <string>
namespace bm = boost::multi_index;
namespace camp
{
class Class;
namespace detail
{
/**
* \brief Manages creation, storage, retrieval and destruction of metaclasses
*
* camp::ClassManager is the place where all metaclasses are stored and accessed.
* It consists of a singleton which is created on first use and destroyed at global exit.
*
* \sa Class
*/
class CAMP_API ClassManager : public ObserverNotifier, boost::noncopyable
{
public:
/**
* \brief Get the unique instance of the class
*
* \return Reference to the unique instance of ClassManager
*/
static ClassManager& instance();
/**
* \brief Create and register a new metaclass
*
* This is the entry point for every metaclass creation. This
* function also notifies registered observers after successful creations.
*
* \param name Name of the metaclass to create (must be unique)
* \param id Identifier of the C++ class bound to the metaclass
*
* \return Reference to the new metaclass
*
* \throw ClassAlreadyCreated \a name or \a id already exists
*/
Class& addClass(const std::string& name, const std::string& id);
/**
* \brief Get the total number of metaclasses
*
* \return Number of metaclasses that have been registered
*/
std::size_t count() const;
/**
* \brief Get a metaclass from its global index
*
* This function, together with ClassManager::count, provides a way to iterate through
* all the metaclasses that have been declared.
*
* \param index Global index of the metaclass to get
*
* \return Reference to the index-th metaclass
*
* \throw OutOfRange index is out of range
*/
const Class& getByIndex(std::size_t index) const;
/**
* \brief Get a metaclass from its name
*
* \param name Name of the metaclass to retrieve
*
* \return Reference to the requested metaclass
*
* \throw ClassNotFound name is not the name of an existing metaclass
*/
const Class& getByName(const std::string& name) const;
/**
* \brief Get a metaclass from a C++ type
*
* \param id Identifier of the C++ type
*
* \return Reference to the requested metaclass
*
* \throw ClassNotFound id is not the name of an existing metaclass
*/
const Class& getById(const std::string& id) const;
/**
* \brief Get a metaclass from a C++ type
*
* This version returns a null pointer if no metaclass is found, instead
* of throwing an exception.
*
* \param id Identifier of the C++ type
*
* \return Pointer to the requested metaclass, or 0 if not found
*/
const Class* getByIdSafe(const std::string& id) const;
/**
* \brief Check if a given type has a metaclass
*
* \param id Identifier of the C++ type
*
* \return True if the class exists, false otherwise
*/
bool classExists(const std::string& id) const;
private:
/**
* \brief Default constructor
*/
ClassManager();
/**
* \brief Destructor
*
* The destructor destroys all the registered metaclasses and notifies the observers.
*/
~ClassManager();
/**
* \brief Structure gathering a class, its type identifier and its name
*/
struct ClassInfo
{
std::string id;
std::string name;
boost::shared_ptr<Class> classPtr;
};
struct Id;
struct Name;
typedef boost::multi_index_container<ClassInfo,
bm::indexed_by<bm::ordered_unique<bm::tag<Id>, bm::member<ClassInfo, std::string, &ClassInfo::id> >,
bm::ordered_unique<bm::tag<Name>, bm::member<ClassInfo, std::string, &ClassInfo::name> >
>
> ClassTable;
typedef ClassTable::index<Id>::type IdIndex;
typedef ClassTable::index<Name>::type NameIndex;
ClassTable m_classes; ///< Table storing classes indexed by their id and name
};
} // namespace detail
} // namespace camp
#endif // CAMP_DETAIL_CLASSMANAGER_HPP
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