import java.io.*;
import java_cup.runtime.*;  // defines Symbol

// **********************************************************************
// Main program to test the C-- scanner.
//
// The file to be scanned should be given as a command-line argument.
// The program opens the file and calls the scanner until the EOF token
// is returned.  For each token, the line and character numbers are printed
// (to System.out), followed by the token name.  If the token has a value
// (is a literal or an identifier), the value is printed, too.
// **********************************************************************

public class P2 {
    public static void main(String[] args) {
	// check for command-line arg
	if (args.length != 1) {
	    System.err.println("please supply name of file to be scanned.");
	    System.exit(-1);
	}

	// open input file
	FileReader inFile = null;
	try {
	    inFile = new FileReader(args[0]);
	} catch (FileNotFoundException ex) {
	    System.err.println("File " + args[0] + " not found.");
	    System.exit(-1);
	}

	// create and call the scanner
	Yylex scanner = new Yylex(inFile);
	try {
	    Symbol token = scanner.next_token();
	    while (token.sym != sym.EOF) {
		System.out.print(((TokenVal)token.value).linenum + ":" +
				 ((TokenVal)token.value).charnum + " ");
		switch (token.sym) {
		case sym.PLUS:
		    System.out.println("PLUS");
		    break;
		case sym.INTLITERAL:
		    System.out.println("INTLITERAL (" +
				       ((IntLitTokenVal)token.value).intVal +
				       ")");
		    break;
		default:
		    System.out.println("unexpected token: " + token.sym);
		    System.exit(-1);
		}
		token = scanner.next_token();
	    }
	} catch (IOException ex) {
	    System.err.println("unexpected IOException thrown by the scanner");
	    System.exit(-1);
	}
    }
}