//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//+      Student:          Junshan Li                                  +
//+      Proj. Assignemnt: Three                                       +
//+      Due Date:         Febuary 19, 2001                            +
//+      Course Name:      MSCS 518 - Compiler Design                  +       
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

// TokFiler.h
#ifndef TOKFILERH
#define TOKFILERH

// This is a header file for TokFiler class. It provides function prototypes
// of TokFiler class.  This class deals with text file handling.
#include <iostream.h>
#include <fstream.h>
#include "Token.h"
#include "pmglobs.h"
//enum bool {false, true};

#define STRSIZE 80   // holds the file name
#define MAXLINES 5000 // the maximum number of lines of a program source file

class TokFiler {
   public:
      bool ENDOFPROGRAM;   // TRUE if en-of-file (program) is true;
      TokFiler();          // class constructor, init ENDOFPROGRAM to false
      void closeTokenFile();  // closes the file that was openned;
      void createTokenFile(); // creates a new token file
      void emitToken(Token tok); // place a token in the file;
      Token getNextToken();  // reads and returns next character in file
      void initLineNumber();  // initialize lineNumber to zero.
      void removeTokenFile(); // closes the file that was openned;
      void retrieveTokenFile();
                           // opens named file if it exists else writes an
                           // error message and terminate execution
      void storeFileName(char* aFileName);
                           // saves file name in fileName[];
      void seeTokenFile();   // displays entire file on output device (include
                             // line number for each program line
   private:
      fstream finOut;        // a fstream object, cout be both input or output
      char fileName[STRSIZE]; // holds the file name 
      char buffer[STRSIZE];   // holds the file name 
      char ch;
      int lineNumber;      // provide the total line number of the input prog.
      int countLines();    // count the lines of the program.
      Token tok;           // a Token class instance variable.
}; // end of class declaration.

#endif