ParserTest.java

import java.io.*;
import minipython.lexer.Lexer;
import minipython.parser.Parser;
import minipython.node.*;
import java.util.*;

public class ParserTest
{
    public static void main(String[] args)
    {
        try
        {
            Parser parser =
                    new Parser(
                            new Lexer(
                                    new PushbackReader(
                                            new FileReader(args[0].toString()), 1024)));

            Hashtable symtable =  new Hashtable();
            Start ast = parser.parse();
            ast.apply(new Visitor(symtable));
            if(Visitor.errors == 0){
                ast.apply(new Visitor2(symtable));
                System.out.println("Total errors found: " + Visitor2.errors);
            } else {
                System.out.println("Total errors found: " + Visitor.errors);
            }

        }
        catch (Exception e)
        {
            System.err.println(e);
        }
    }
}