need help with a lexer

[DTSCode]

hey all! Im not new to forums in general, but i am to this one, so if im inadvertently breaking a rule please let me know. anyways i need help with some code im writing and cant figure it out. im writing a compiler for a language im designing called Jade, and am on the step with the lexer. im basing this off the udacity tutorial teaching you how to build a web browser (its more to learn how to interpret html/javascript) and am using the purple dragon book for reference. anyways heres the code:

#include <iostream>
#include <fstream>
#include <sstream>
#include <string>
#include <vector>
#include <regex.h>

using std::ostream;
using std::cout;
using std::cerr;
using std::endl;
using std::cin;
using std::ifstream;
using std::istringstream;
using std::string;
using std::vector;

class Token
{
     string Type, Name;
     int LineNo, LineCol;

     public:
          Token(string type, string name, int lineno, int linecol)
               : Type(type), Name(name), LineNo(lineno), LineCol(linecol) {}
          Token() {}

          void SetType   (string type) { Type    = type;    }
          void SetName   (string name) { Name    = name;    }
          void SetLineNo (int lineno)  { LineNo  = lineno;  }
          void SetLineCol(int linecol) { LineCol = linecol; }

          string GetType   () { return Type;    }
          string GetName   () { return Name;    }
          int    GetLineNo () { return LineNo;  }
          int    GetLineCol() { return LineCol; }
};

ostream& operator<<(ostream &out, Token token)
{
     out<<"("<< token.GetType() <<", '"<< token.GetName() <<"', "<< token.GetLineNo() <<", "<< token.GetLineCol() <<")";
     return out;
}

void  ReadInFile (ifstream&, vector<string>&);
void  Lex        (vector<string>&, vector<Token>&);
Token Lex        (string, int&, int&);

int main(int argc, char *argv[])
{
     ifstream File(argv[1]);
     vector<string> FileContents;
     vector<Token> TokenList;

     ReadInFile(File, FileContents);

     Lex(FileContents, TokenList);

     for(auto &Counter : TokenList)
          cout<< Counter << endl;
}

void ReadInFile(ifstream &File, vector<string> &FileContents)
{
     int Counter = 0;
     string Line;

     while(getline(File, Line))
          FileContents.push_back(Line);
}

void Lex(vector<string> &FileContents, vector<Token> &TokenList)
{
     int LineNo = 1, MBegin, MEnd;

     for(auto &Counter : FileContents)
     {
          (MBegin = 0) && (MEnd = Counter.size() - 1);

          while(true)
          {
               TokenList.push_back(Lex(Counter, MBegin, MEnd));

               if(Counter.at(MEnd) == '\n')
               {
                    if(TokenList[TokenList.size() - 1].GetType() == "UNINITIALIZED")
                         TokenList.pop_back();

                    break;
               }

               Counter = Counter.substr(MEnd, Counter.size() - MEnd - 1);
               TokenList[TokenList.size() - 1].SetLineNo(LineNo);
          }

          LineNo++;
     }
}

Token Lex(string Line, int &MBegin, int &MEnd)
{
     regex_t Regex;
     regmatch_t Match;

     regcomp(&Regex, "\"[^\"]+\"", REG_EXTENDED);
     if(regexec(&Regex, Line.c_str(), 1, &Match, 0) == 0)
     {
               (MBegin = Match.rm_so) && (MEnd = Match.rm_eo);
               return Token("STRING", Line.substr(MBegin + 1, MEnd - MBegin - 2), -1, MBegin + 1);
     }
     regfree(&Regex);

     (MBegin = 0) && (MEnd = Line.size() - 1);
     return Token("UNINITIALIZED", "", -1, -1);
}

terminate called after throwing an instance of 'std:ut_of_range'
what(): basic_string::at
Aborted (core dumped)
the problem is when ever i run it i get this:
terminate called after throwing an instance of 'std:ut_of_range'
what(): basic_string::at
Aborted (core dumped)

i have asked cplusplus.com, which i have found to be a great forum, but they were unable to help.

[oogabooga]

This kind of thing is just silly, even if it worked correctly

(MBegin = 0) && (MEnd = Line.size() - 1);

The expression (MBegin = 0) has a value of 0, i.e., false, so the short-circuit nature of && will skip the other expression/assignment.

Just write it normally.

And what is regex.h?
Why aren't you using the C++11 regex?

[DTSCode]

ah that makes sense. i was actually just testing the && to see if it would work and decided to not take it out, but i forgot that it will short circuit. regex.h is the c regex library. i would and have tried to use <regex>, but as im on linux using the gcc i cant, because its not supported yet. i know regex.h is outdated, so its really just a place holder right now until <regex> is supported or i find the time to get boost installed and built

edit: thanks it worked! you have no idea how helpful that is. my lexer is finally done!

[oogabooga]

No problem. Easy one, actually.
Get rid of both of those && contraptions and write what you actually mean.

[Elkvis]

but as im on linux using the gcc i cant, because its not supported yet

what linux distribution and gcc version do you have? do you know you can build your own custom version of gcc?