ParserTest1.java

import java.io.*;
import java.util.ArrayList;
import java.util.Hashtable;
import minipython.lexer.Lexer;
import minipython.node.Node;
import minipython.node.Start;
import minipython.parser.Parser;

public class ParserTest1
{
  public static void main(String[] args)
  {
    try
    {
      Parser parser =
        new Parser(
        new Lexer(
        new PushbackReader(
        new FileReader(args[0].toString()), 1024)));

      Hashtable<String, ArrayList<Node>> symtableA = new Hashtable<>();
      Hashtable<String, String> symtableB = new Hashtable<>();

      Start ast = parser.parse();
      VisitorA v1 = new VisitorA(symtableA);
      System.out.println("Starting scan #1. . .");
      ast.apply(v1);
      System.out.println("Scan #1 Completed. Total errors found = "+v1.errors);
      if(v1.errors == 0) {

        VisitorB v2 = new VisitorB(symtableB);
        System.out.println("Starting scan #2. . .");
        ast.apply(v2);
        System.out.println("Scan #2 Completed. Total errors found = " + v2.errors);
      }

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