/home/marcvs/Desktop/working/pa-materiale/pa/codeBase/C++/include/BooleanExpression.h

#ifndef __BOOLEANEXPRESSION_H__
#define __BOOLEANEXPRESSION_H__

#pragma once

#include <iostream>
#include <string>
#include <vector>

class BooleanExpression;

std::istream& operator>> (std::istream& in, BooleanExpression& right);

class BooleanExpression{
public:
        enum Lexem{
                True,
                False,
                And,
                Or,
                Xor
        };
        
private:
        std::vector<Lexem> expr;
        
        bool lexical_analysis(const std::string& input);
        bool semantic_analysis();
        bool parse(const std::string& input);   
        bool valid;
        
public:
        inline bool is_valid(){
                return valid;
        }

        inline void operator<< (const char* input){
                parse(std::string(input));
        }
        
        inline void operator<< (const std::string& input){
                parse(input);
        }

        inline std::vector<Lexem> to_vector(){
                return valid ? expr : std::vector<Lexem>();
        }
        
        friend std::istream& operator>> (std::istream& in, BooleanExpression& right);
        
        BooleanExpression() : valid(false) { }
};

#endif