#ifndef _STRINGSTRAND_H
#define _STRINGSTRAND_H


#include <iostream>
#include <string>
using namespace std;

#include "strand.h"

/*
 * Concrete implementation of Strand using strings
 * to store DNA strands. Functions include
 * cutWith (see strand.h) and DNA subclass functions
 * (see dna.h)
 *
 * StringStrand s("xxx");  // only AGTC in "xxx" are processed
 *                         // and converted to lower case
 *
 * Owen Astrachan
 */


class StringStrand : public Strand
{
  public:

    StringStrand();
    StringStrand(const string& s);
    virtual ~StringStrand();
    
    virtual void read(istream& input);
    virtual Strand * cutWith(const Restrictor& enzyme);
    
    virtual int  size()              const;
    virtual void print(ostream& out) const;
    virtual string toString()        const;
    
  private:
    
    string myString;
};

#endif