#include "Lexer.hpp"
#include "TokenList.hpp"

#include <iostream>
#include <fstream>
#include <map>

#include <utils/src/string.hpp>

using namespace Blang;

static std::map<Token::TokenKind,std::regex> regexMap;

TokenList Lexer::tokenize(const std::string& t){

    string text(t);

    std::string::const_iterator itt;
    TokenList tokenList;

    for ( itt = text.begin (); itt != text.end (); ++ itt ){
        if(text.substr(itt, itt+1) == "If"){
            itt += 2;
        }else if(*itt == '\"'){
            int bpos = itt;
            while(*itt != '\"')
                itt++;
            tokenList << Token(Token::Token_StringLiteral, text.substr(itt, itt+1));
        } else if(std::string(" \t").find(*itt) >= 0){
            tokenList << Token(Token::Token_Whitespace, itt);
        }
    }
}

TokenList Lexer::tokenizeFile(const std::string& filename){
    std::ifstream fileStream(filename);
    if(fileStream){
        std::string text, line;
        while(getline(fileStream, line)){
            text += line + std::endl;
        }
        tokenizeFile(text);
    } else {
        std::cout << "Error: Unable to read file" << std::endl;
    }
}