private String printSlot(int xi, int mode)
    {
        return ((mode == STACK_ADDR) ? "Y" : "X") + ((mode == STACK_ADDR) ? (xi - ep - 3) : xi);
    }
private String printSlot(int xi, int mode)
    {
        return ((mode == STACK_ADDR) ? "Y" : "X") + ((mode == STACK_ADDR) ? (xi - ep - 3) : xi);
    }
private String printSlot ( int xi , int mode ) { return ( ( mode == STACK_ADDR ) ? "Y" : "X" ) + ( ( mode == STACK_ADDR ) ? ( xi - ep - 3 ) : xi ) ; }
Pretty prints a variable allocation slot for tracing purposes.

@param  xi   The allocation slot to print.
@param  mode The addressing mode, stack or register.

@return The pretty printed slot.
Pretty prints a variable allocation slot for tracing purposes .