// lexer_driver.cpp
// ~~~~~~~~~~~~~~~~
// author: Hung Q. Ngo
// - a simple driver for the the Lexer class
#include <iostream>
#include "Lexer.h"
using namespace std;

// print all tokens of a given lexer obj
void print_tokens(Lexer lexer) 
{
    Token tok;
    while (lexer.has_more_token()) {
        tok = lexer.next_token();
        switch (tok.type) {
            case IDENT:
                cout << "Identifier: " << tok.value << endl;
                break;
            case STRING:
                cout << "String:     " << tok.value << endl;
                break;
            case ENDTOK:
                cout << "END of string token -- should not reach here\n";
                break;
            case ERRTOK:
                cout << "ERROR Token" << endl;
                return;
        }
    }
}

// a few tests
int main() 
{
    Lexer lexer("This \"is a good\" \t test");
    print_tokens(lexer);
    lexer.set_input("This \"is a \" test and \"an error");
    print_tokens(lexer);
    return 0;
}