ParserTest2.java

import java.io.*;
import java.util.Hashtable;
import java.util.List;
import java.util.Map;

import minipython.lexer.Lexer;
import minipython.parser.Parser;
import minipython.node.Start;


public class ParserTest2 {
    public static void main(String[] args) {
        try {
            Parser parser =
                    new Parser(
                            new Lexer(
                                    new PushbackReader(
                                            new FileReader(args[0].toString()), 1024)));

            Start ast = parser.parse();

            ast.apply(new ASTPrinter());
            Hashtable<String, Variable> variables = new Hashtable();
            Hashtable<String, List<Function>> functions = new Hashtable(); /* List of functions for overloading */
            System.out.println("Entering First Visitor:");
            ast.apply(new Visitor1(functions));
            System.out.println("Entering Second Visitor:");
            ast.apply(new Visitor2(variables, functions));
            System.out.println("Entering Third Visitor:");
            ast.apply(new Visitor3(variables, functions));
            System.out.println("Functions");
            System.out.println(functions);
            System.out.println("Variables");
            for (Map.Entry<String, Variable> entry : variables.entrySet()) {
                String key = entry.getKey();
                Variable value = entry.getValue();

                System.out.println("Key: " + key + " Value: " + value);
            }
        } catch (Exception e) {
            System.err.println(e);
        }
    }
}