lels

package us.cio.lily;

import java.io.FileNotFoundException;
import java.util.Scanner;
import org.antlr.runtime.*;
import org.antlr.runtime.tree.*;

import us.cio.lily.tree.*;

public class Main {

    public static void main(String[] args) throws Exception {

        Scanner scanner = new Scanner(System.in);

        System.out.println("Type Filename of INPUT FILE (ends with .pc)");
        System.out.print("Filename (Example: test.pc): ");
        String filename = scanner.nextLine();

        try {
            System.out.println("--- result of parsed code ---");
            pseudoCLexer lexer = new pseudoCLexer(new ANTLRFileStream(filename));
            CommonTokenStream tokens = new CommonTokenStream(lexer);
            pseudoCParser parser = new pseudoCParser(tokens);
            CommonTree tree = (CommonTree) parser.parse().getTree();
            CommonTreeNodeStream nodes = new CommonTreeNodeStream(tree);
            PCTreeWalker walker = new PCTreeWalker(nodes, parser.functions);
            PCNode returned = walker.walk();
            System.out.println(returned == null ? "null" : returned.evaluate());
        } catch (FileNotFoundException ex) {
            System.out.println("File not found, stack trace below (Program Halt)");
            ex.printStackTrace();
        }
    }

}