Method eval

chapter24/src/test/java/com/seaofnodes/simple/Eval2.java:117–117

( CodeGen code, long arg )

    public static Frame F;

    public static String eval( CodeGen code, long arg ) { return eval(code,arg,1000); }
    public static String eval( CodeGen code, long arg, int timeout ) {
        if( code._start.uctrl()==null ) return ""; // The empty program
        SB trace = null; // = new SB(); // TRACE, set to null for off, new SB() for on