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//--------------------------------------------------------------------------
// File and Version Information:
//      $Id: AstStringMap.h,v 1.4 2010/03/25 09:55:57 zhangy Exp $
//
// Description:
//      This class is meant to be used to store an unowned pointer to
//      and object that you reference with a std::string key.
//
// Environment:
//      This software was developed for the BaBar collaboration.  If you
//      use all or part of it, please give an appropriate acknowledgement.
//
// Author List:
//      Stephen J. Gowdy        Originator
//
// Copyright Information:
//      Copyright (C) 2004      Stanford Linear Accelerator Center
// 
// History:
//      Migration for BESIII MDC
//
//------------------------------------------------------------------------

#ifndef ASTSTRINGMAP_H
#define ASTSTRINGMAP_H

//-------------
// C Headers --
//-------------
extern "C" {
}

//---------------
// C++ Headers --
//---------------
#include <iosfwd>
#include <map>
#include <string>
#include <vector>

//----------------------
// Base Class Headers --
//----------------------

//-------------------------------
// Collaborating Class Headers --
//-------------------------------

//------------------------------------
// Collaborating Class Declarations --
//------------------------------------

//              ---------------------
//              -- Class Interface --
//              ---------------------


template<class T> 
class AstStringMap {

  //--------------------
  // Declarations     --
  //--------------------

  // Typedefs, consts, and enums

  //--------------------
  // Instance Members --
  //--------------------

  public:

    // Constructors
    AstStringMap();

    // Destructor
    virtual ~AstStringMap( );

    // Operators

    virtual T* operator[]( const std::string& key ) const;

    // Selectors (const)
    virtual int size() const;

    // Modifiers

    virtual T*& insert( const std::string& key );

    virtual void clear();

  protected:

    // Helper functions
    inline int stringToBucket( const std::string& key ) const;
    //CHANGE  inline uint64_t stringToInt( const std::string& key ) const;
    inline unsigned stringToInt( const std::string& key ) const;

  private:

    // Friends
    //friend std::ostream& operator<<<T>( std::ostream& stream,
    friend std::ostream& operator<<( std::ostream& stream,
        const AstStringMap< T >& map );

    // Data members

    // Here we map strings upto and including eight characters to a 64 bit int
    std::map< unsigned, T* > _intMap;
    // for output, remember the string
    std::map< unsigned, std::string > _intStringMap;

    // Here we have a std::map for each letter for longer strings
    std::vector< std::map< std::string, T* > > _stringMap;

    // Note: if your class needs a copy constructor or an assignment operator, 
    //  make one of the following public and implement it.
    AstStringMap( const AstStringMap<T>& );  // Copy Constructor
    AstStringMap<T>& operator= ( const AstStringMap<T>& );

    //------------------
    // Static Members --
    //------------------

  public:

    // Selectors (const)

    // Modifiers

  private:

    // Data members

};


template < class T >
std::ostream&
operator<<( std::ostream& stream, const AstStringMap< T >& map );

//SKIP #ifdef    BES_COMP_INST
//SKIP #include  "MdcTrkRecon/Tools/AstStringMap.cxx"
#include  "AstStringMap.icc"
//SKIP #endif  // BES_COMP_INST


#endif  // ASTSTRINGMAP_H

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