c$++$ code please. here is the outline:

#include

#include

#include

#include "lexer.h$"$

using namespace std;

$//$ read grammar

void ReadGrammar$()$

$\{$

cout

$"$;

$\}$

$//$ Task $3$

void CalculateFirstSets$()$

$\{$

cout

$"$;

$\}$

lexer.h:

#ifndef $\_\_$LEXER$\_\_$H$\_\_$

#define $\_\_$LEXER$\_\_$H$\_\_$

#include

#include

#include "inputbuf.h$"$

$//$ Lexer modified for FIRST & FOLLOW project

typedef enum $\{$ END$\_$OF$\_$FILE $=0,$ ARROW, STAR, HASH, ID$,$ ERROR $\}$ TokenType;

class Token $\{$

public:

void Print$()$;

std::string lexeme;

TokenType token$\_$type;

int line$\_$no;

$\}$;

class LexicalAnalyzer $\{$

public:

Token GetToken$()$;

Token peek$($int$)$;

LexicalAnalyzer$()$;

private:

std::vector tokenList;

Token GetTokenMain$()$;

int line$\_$no;

int index;

Token tmp;

InputBuffer input;

bool SkipSpace$()$;

Token ScanId$()$;

$\}$;

#endif $//\_\_$LEXER$\_\_$H$\_\_$