Dario Sassi
79 lines
2.9 KiB
C++
79 lines
2.9 KiB
C++
//----------------------------------------------------------------------------
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// EgalTech 2015-2015
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//----------------------------------------------------------------------------
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// File : EGkObjUserFactory.h Data : 22.05.15 Versione : 1.6e3
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// Contenuto : Factory della classe IObjUser.
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//
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//
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//
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// Modifiche : 22.05.15 DS Creazione modulo.
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//
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//
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//----------------------------------------------------------------------------
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#pragma once
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#include "/EgtDev/Include/EGkObjUser.h"
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#include <string>
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#include <unordered_map>
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//----------------------- Macro per import/export ----------------------------
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#undef EGK_EXPORT
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#if defined( I_AM_EGK) // da definirsi solo nella DLL
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#define EGK_EXPORT __declspec( dllexport)
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#else
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#define EGK_EXPORT __declspec( dllimport)
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#endif
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//----------------------------------------------------------------------------
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#define OBJUSER_REGISTER( sName, T) static const bool bReg_##T = \
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ObjUserRegister<class T>::DoRegister( sName)
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#define OBJUSER_GETNAME( T) ObjUserRegister<class T>::GetName()
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#define OBJUSER_CREATE( sName) ObjUserFactory::Create( sName)
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#define OBJUSER_GETLIST( vsList) ObjUserFactory::GetList( vsList)
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//----------------------------------------------------------------------------
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template <class T>
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class ObjUserRegister
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{
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public :
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static bool DoRegister( const std::string& sName)
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{ if ( ! ObjUserFactory::Register( sName, Create))
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return false ;
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GetNamePrivate() = sName ;
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return true ; }
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static IObjUser* Create( void)
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{ return new(nothrow) T ; }
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static const std::string& GetName( void)
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{ return GetNamePrivate() ; }
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private :
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ObjUserRegister( void) {}
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~ObjUserRegister( void) {}
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static std::string& GetNamePrivate( void)
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{ static std::string s_sName ;
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return s_sName ; }
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} ;
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//----------------------------------------------------------------------------
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class ObjUserFactory
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{
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public :
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// definizione del tipo funzione di creazione
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typedef IObjUser* ( *ObjUserCreator) ( void) ;
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// per registrare le funzioni di creazione
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EGK_EXPORT static bool Register( const std::string& sName, ObjUserCreator Creator) ;
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// per creare l'oggetto richiesto
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EGK_EXPORT static IObjUser* Create( const std::string& sName) ;
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// per restituire la lista degli oggetti registrati
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EGK_EXPORT static bool GetList( STRVECTOR& vsList) ;
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private :
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ObjUserFactory( void) {}
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~ObjUserFactory( void) {}
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// definizione del tipo mappa con coppie nome, funzione di creazione
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typedef std::unordered_map<std::string, ObjUserCreator> CreatorMap ;
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// metodo di accesso alla mappa statica
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static CreatorMap& GetCreatorMap( void) ;
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} ;
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