AbstractAlphabet.h

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//
// File: AbstractAlphabet.h
// Authors: Guillaume Deuchst
//          Julien Dutheil
//          Sylvain Gaillard
// Created on: Tue Jul 22 2003
//

/*
  Copyright or © or Copr. Bio++ Development Team, (November 17, 2004)

  This software is a computer program whose purpose is to provide classes
  for sequences analysis.

  This software is governed by the CeCILL  license under French law and
  abiding by the rules of distribution of free software.  You can  use, 
  modify and/ or redistribute the software under the terms of the CeCILL
  license as circulated by CEA, CNRS and INRIA at the following URL
  "http://www.cecill.info". 

  As a counterpart to the access to the source code and  rights to copy,
  modify and redistribute granted by the license, users are provided only
  with a limited warranty  and the software's author,  the holder of the
  economic rights,  and the successive licensors  have only  limited
  liability. 

  In this respect, the user's attention is drawn to the risks associated
  with loading,  using,  modifying and/or developing or reproducing the
  software by the user in light of its specific status of free software,
  that may mean  that it is complicated to manipulate,  and  that  also
  therefore means  that it is reserved for developers  and  experienced
  professionals having in-depth computer knowledge. Users are therefore
  encouraged to load and test the software's suitability as regards their
  requirements in conditions enabling the security of their systems and/or 
  data to be ensured and,  more generally, to use and operate it in the 
  same conditions as regards security. 

  The fact that you are presently reading this means that you have had
  knowledge of the CeCILL license and that you accept its terms.
*/

#ifndef _ABSTRACTALPHABET_H_
#define _ABSTRACTALPHABET_H_

#include "Alphabet.h"
#include "AlphabetState.h"
#include <Bpp/Exceptions.h>

// From the STL:
#include <string>
#include <vector>
#include <map>

namespace bpp
{

  class AbstractAlphabet:
    public Alphabet
  {
  private:
    
    std::vector<AlphabetState*> alphabet_;
    std::map<std::string, size_t> letters_;
    std::map<int, size_t> nums_;
    void updateMaps_(size_t pos, const AlphabetState& st);

  protected:
    mutable std::vector<std::string> charList_;
    mutable std::vector<int> intList_;
  public:
    
    AbstractAlphabet(): alphabet_(), letters_(), nums_(), charList_(), intList_() {}

    virtual ~AbstractAlphabet()
    {
      for (unsigned int i = 0 ; i < alphabet_.size() ; i++)
        delete alphabet_[i];
    }
  
  public:
    unsigned int getNumberOfChars() const { return static_cast<unsigned int>(alphabet_.size()); }
    std::string getName(const std::string& state) const throw (BadCharException);
    std::string getName(int state) const throw (BadIntException);
    int charToInt(const std::string& state) const throw (BadCharException);
    std::string intToChar(int state) const throw (BadIntException);
    bool isIntInAlphabet(int state) const;
    bool isCharInAlphabet(const std::string& state) const;
    std::vector<int> getAlias(int state) const throw (BadIntException);
    std::vector<std::string> getAlias(const std::string& state) const throw (BadCharException);
    int getGeneric(const std::vector<int>& states) const throw (BadIntException);
    std::string getGeneric(const std::vector<std::string>& states) const throw (AlphabetException);
    const std::vector<int>& getSupportedInts() const;
    const std::vector<std::string>& getSupportedChars() const;
    int getGapCharacterCode() const { return -1; }
    bool isGap(int state) const { return state == -1; }
    bool isGap(const std::string& state) const { return charToInt(state) == -1; }
    const AlphabetState& getState(const std::string& letter) const throw (BadCharException);
    const AlphabetState& getState(int num) const throw (BadIntException);
  protected:
    virtual void registerState(const AlphabetState& st);
    virtual void setState(size_t pos, const AlphabetState& st) throw (IndexOutOfBoundsException);
    void resize(unsigned int size) { alphabet_.resize(size); }
    virtual AlphabetState& getStateAt(size_t pos) throw (IndexOutOfBoundsException);
    virtual const AlphabetState& getStateAt(size_t pos) const throw (IndexOutOfBoundsException);

    void remap() {
      for (size_t i = 0 ; i < alphabet_.size() ; i++) {
        updateMaps_(i, * alphabet_[i]);
      }
    }

    unsigned int getStateCodingSize() const { return 1; }

  };

} //end of namespace bpp.

#endif // _ABSTRACTALPHABET_H_