Compiler 2012

package javac.parser;

import static javac.parser.Symbols.*;

public final class ScannerTest {

    public static void main(String[] args) throws Exception {
        scan("queens.java");
    }
    
    private static void scan(String filename) throws Exception {
        java.io.InputStream in = new java.io.FileInputStream(filename);
        java_cup.runtime.Scanner lexer = new Yylex(in);
        java_cup.runtime.Symbol tok = null;
        
        do {
            tok = lexer.next_token();
            if (tok.sym == STRING_LITERAL) {
                System.out.print("\"" + tok.value + "\"");
            } else if (tok.sym == INTEGER) {
                System.out.print(tok.value);
            } else if (tok.sym == CHARACTER) {
                System.out.print("'" + tok.value + "'");
            } else if (tok.sym == ID) {
                System.out.print(tok.value);
            } else {
                System.out.print(symnames[tok.sym]);
            }
        } while (tok.sym != EOF);
        
        in.close();
    }
    
    static String[] symnames = new String[1000];
    static {
        symnames[LRBRACKET] = "[]";
        symnames[DIVIDE] = " / ";
        symnames[LBRACKET] = "[";
        symnames[CHAR] = "char ";
        symnames[LPAREN] = "(";
        symnames[GREATER] = " > ";
        symnames[CONTINUE] = "continue";
        symnames[INT] = "int ";
        symnames[LESS] = " < ";
        symnames[FOR] = "for ";
        symnames[MINUS] = " - ";
        symnames[RPAREN] = ") ";
        symnames[NOT] = "!";
        symnames[SEMICOLON] = ";\n";
        symnames[AND] = " && ";
        symnames[RECORD] = "record ";
        symnames[OR] = " || ";
        symnames[COMMA] = ", ";
        symnames[MULTIPLY] = " * ";
        symnames[PLUS] = " + ";
        symnames[ASSIGN] = " = ";
        symnames[IF] = "if ";
        symnames[DOT] = ".";
        symnames[EOF] = "<EOF>";
        symnames[RETURN] = "return ";
        symnames[RBRACKET] = "]";
        symnames[NEW] = "new ";
        symnames[error] = "<error>";
        symnames[MODULO] = " % ";
        symnames[NULL] = "null";
        symnames[NEQ] = " != ";
        symnames[BREAK] = "break";
        symnames[EQ] = " == ";
        symnames[LBRACE] = "{\n";
        symnames[NATIVE] = "native ";
        symnames[ELSE] = "else ";
        symnames[WHILE] = "while ";
        symnames[LESS_EQ] = " <= ";
        symnames[RBRACE] = "}\n";
        symnames[STRING] = "string ";
        symnames[GREATER_EQ] = " >= ";
    }
}