typename.h

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// @(#)root/reflex:$Name:  $:$Id: TypeName.h,v 1.3 2006/09/05 17:13:14 roiser Exp $
// Author: Stefan Roiser 2004

// Copyright CERN, CH-1211 Geneva 23, 2004-2006, All rights reserved.
//
// Permission to use, copy, modify, and distribute this software for any
// purpose is hereby granted without fee, provided that this copyright and
// permissions notice appear in all copies and derivatives.
//
// This software is provided "as is" without express or implied warranty.

#ifndef ROOT_Reflex_TypeName
#define ROOT_Reflex_TypeName

// Include files
#include "Reflex/Kernel.h"
#include <string>
#include <typeinfo>

namespace ROOT {
   namespace Reflex {

      // forward declarations 
      class TypeBase;
      class Type;

      /** 
       * class TypeName TypeName.h Reflex/TypeName.h
       * @author Stefan Roiser
       * @date 06/11/2004
       * @ingroup Ref
       */
      class RFLX_API TypeName {

         friend class Type;
         friend class TypeBase;

      public:

         /** default constructor */
         TypeName( const char * nnam,
                   TypeBase * typeBas,
                   const std::type_info * ti = 0 );

      
         /**
          * ByName will look for a At given as a string and return a pointer to
          * its reflexion At
          * @param  key fully qualified Name of the At as string
          * @return pointer to At or 0 if none is found
          */
         static const Type & ByName( const std::string & key );
      
      
         /**
          * byTypeId will look for a At given as a string representation of a
          * type_info and return a pointer to its reflexion At
          * @param  tid string representation of the type_info At
          * @return pointer to At or 0 if none is found
          */
         static const Type & ByTypeInfo( const std::type_info & ti );


         static void CleanUp();


         
         /**
          * DeleteType will call the destructor of the TypeBase this TypeName is
          * pointing to and remove it's information from the data structures. The
          * TypeName information will remain.
          */
         void DeleteType() const;


         void HideName();


         /**
          * Name will return the string representation of the At (unique)
          * @return At Name as a string
          */
         const std::string & Name() const;
      
      
         /**
          * Name_c_str returns a char* pointer to the unqualified At Name
          * @ return c string to unqualified At Name
          */
         const char * Name_c_str() const;
      
      
         /** 
          * At returns the At object of this TypeName
          * @return corresponding Type to this TypeName
          */
         const Type & ThisType() const;


         /**
          * At will return a pointer to the nth Type in the system
          * @param  nth number of At to return
          * @return pointer to nth Type in the system
          */
         static const Type & TypeAt( size_t nth );


         /**
          * Size will return the number of currently defined types in
          * the system
          * @return number of currently defined types
          */
         static size_t TypeSize();


         static Type_Iterator Type_Begin();
         static Type_Iterator Type_End();
         static Reverse_Type_Iterator Type_RBegin();
         static Reverse_Type_Iterator Type_REnd();

      private:

         /** destructor */
         ~TypeName();

         /** Set the type_info in the hash_map to this */
         void SetTypeId( const std::type_info & ti ) const;
      
      private:

         /** the Name of the At */
         std::string fName;


         /**
          * pointer to a TypebeBase if the At is implemented
          * @label type base
          * @link aggregation
          * @supplierCardinality 1
          * @clientCardinality 1
          */
         mutable 
            TypeBase * fTypeBase;

         /**
          * Pointer back to the type
          * @label this type
          * @link aggregation
          * @supplierCardinality 1
          * @clientCardinality 1
          */
         Type * fThisType;

      }; // class TypeName

   } // namespace Reflex
} // namespace ROOT


//-------------------------------------------------------------------------------
inline const std::string & ROOT::Reflex::TypeName::Name() const {
//-------------------------------------------------------------------------------
   return fName;
}


//-------------------------------------------------------------------------------
inline const char * ROOT::Reflex::TypeName::Name_c_str() const {
//-------------------------------------------------------------------------------
   return fName.c_str();
}

#endif // ROOT_Reflex_TypeName