// Decoder.h
//	decodes a sequence of 4 digit numerals
// 	separated by a single blank
//	code numerals are stored in a vector
//	translates these to strings/expressions
// 	based upon the Decodebook
//	decoder holds a vector of 4 digit strings

#ifndef DECODE_CLASS
#define DECODE_CLASS

#include <string>
#include <vector>
#include "Decodebook.h"

class Decoder {
  private:
    Decodebook dcb; 			// vector of Pairs
    std::vector<std::string> code; 	// 4-digit codes
    std::string message;		// plaintext translation

  public:
    // default constructor
    // sets private data members to default values
    Decoder();

    // inserts the code string into a vector
    void insert(std::string);

    // reads the coded message AS IS
    void reader();

    // prints the encoded message 
    // (ie. the contents of the vector)
    void printCode() const;

    // prints the plaintext that is associated with code
    void printPlain() const;

    // puts the decoded message into a string
    // uses the Decodebook class
    // changes any word "halt" to a . (period)
    // ********** THIS METHOD HAS CHANGED *********
    void decode();

    // makes the text singular
    // halves the code number
    void makeSingular(std::string &);

  private:
    // you may place any private methods you need here
};

#endif // DECODE_CLASS