valmap.h 2.44 KB
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/*! \file valmap.h
 * \brief map element values (prototypes)
 * 
 * ----------------------------------------------------------------------------
 * 
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 * $Id: valmap.h,v 1.2 2005-04-28 12:58:31 tforb Exp $
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 * \author Thomas Forbriger
 * \date 20/03/2005
 * 
 * map element values (prototypes)
 * 
 * Copyright (c) 2005 by Thomas Forbriger (BFO Schiltach) 
 * 
 * REVISIONS and CHANGES 
 *  - 20/03/2005   V1.0   Thomas Forbriger
 * 
 * ============================================================================
 */

// include guard
#ifndef AFF_VALMAP_H_VERSION

#define AFF_VALMAP_H_VERSION \
  "AFF_VALMAP_H   V1.0   "
#define AFF_VALMAP_H_CVSID \
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  "$Id: valmap.h,v 1.2 2005-04-28 12:58:31 tforb Exp $"
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#include<aff/lib/mapper.h>
#include<map>
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namespace aff {

  namespace func {

    namespace util {

      /*! Utility class to map values using a std::map
       *
       * This class should be used together with the
       * aff::func::util::mapvalues() function template.
       *
       * \param T1 source value type
       * \param T2 target value type
       */
      template<class T1, class T2>
        class Mapvalmap {
          public:
            typedef T1 Tinvalue;
            typedef T2 Toutvalue;
            typedef std::map<Tinvalue,Toutvalue> Tmap;
            //! initialize member data
            Mapvalmap(const Tmap& m): Mmap(m) { }
            //! map another value
            Toutvalue operator() (Tinvalue v) { return(Mmap[v]); }
          private:
            Tmap Mmap;
        }; // class Mapvalmap
      
    } // namespace util

/*----------------------------------------------------------------------*/

    /*! Function template to map container contents to values of a different
     *  type
     *
     * \param C any container class like aff::Array
     * \param T1 type of values in source container
     * \param T2 type of values in target container
     *
     * \param c any container of values to be mapped
     * \return container of same shape as c but with mapped values
     *
     * \sa aff::func::util::mapvaues, aff::func::util::Mapvalmap
     */
    template<template <class> class C, class T1, class T2>
      C<T2> valmap(const C<T1>& c, 
                   const typename util::Mapvalmap<T1,T2>::Tmap& m)
      {
        return(aff::func::util::mapvalues<C, util::Mapvalmap<T1,T2> >(c,m));
      } // rms()

  } // namespace func

} // namespace aff
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#endif // AFF_VALMAP_H_VERSION (includeguard)

/* ----- END OF valmap.h ----- */