How to use

op_lshift

method

in

org.jruby.RubyBignum

/** fix_lshift
 *
 */
@Override
public IRubyObject op_lshift(ThreadContext context, IRubyObject other) {
  if (!(other instanceof RubyFixnum)) {
    return RubyBignum.newBignum(context.runtime, value).op_lshift(context, other);
  }
  return op_lshift(context, ((RubyFixnum) other).value);
}

/** fix_lshift
 *
 */
@Override
public IRubyObject op_lshift(ThreadContext context, IRubyObject other) {
  if (!(other instanceof RubyFixnum)) {
    return RubyBignum.newBignum(context.runtime, value).op_lshift(context, other);
  }
  return op_lshift(context, ((RubyFixnum) other).value);
}

private RubyInteger lshift(ThreadContext context, final long width) {
  if (width > BIT_SIZE - 1 || ((~0L << BIT_SIZE - width - 1) & value) != 0) {
    return RubyBignum.newBignum(context.runtime, value).op_lshift(context, width);
  }
  return RubyFixnum.newFixnum(context.runtime, value << width);
}

private RubyInteger lshift(ThreadContext context, final long width) {
  if (width > BIT_SIZE - 1 || ((~0L << BIT_SIZE - width - 1) & value) != 0) {
    return RubyBignum.newBignum(context.runtime, value).op_lshift(context, width);
  }
  return RubyFixnum.newFixnum(context.runtime, value << width);
}

/** rb_big_lshift
 *
 */
@Override
public IRubyObject op_lshift(ThreadContext context, IRubyObject other) {
  long shift;
  for (;;) {
    if (other instanceof RubyFixnum) {
      shift = ((RubyFixnum) other).getLongValue();
      break;
    } else if (other instanceof RubyBignum) {
      RubyBignum otherBignum = (RubyBignum) other;
      if (otherBignum.value.signum() < 0) {
        IRubyObject tmp = otherBignum.checkShiftDown(context, this);
        if (tmp != null) return tmp;
      }
      shift = big2long(otherBignum);
      break;
    }
    other = other.convertToInteger();
  }
  return op_lshift(context, shift);
}

/** rb_big_lshift
 *
 */
@Override
public IRubyObject op_lshift(ThreadContext context, IRubyObject other) {
  long shift;
  for (;;) {
    if (other instanceof RubyFixnum) {
      shift = ((RubyFixnum) other).getLongValue();
      break;
    } else if (other instanceof RubyBignum) {
      RubyBignum otherBignum = (RubyBignum) other;
      if (otherBignum.value.signum() < 0) {
        IRubyObject tmp = otherBignum.checkShiftDown(context, this);
        if (tmp != null) return tmp;
      }
      shift = big2long(otherBignum);
      break;
    }
    other = other.convertToInteger();
  }
  return op_lshift(context, shift);
}

/** fix_lshift 
 * 
 */
@JRubyMethod(name = "<<")
public IRubyObject op_lshift(IRubyObject other) {
  if (!(other instanceof RubyFixnum)) return RubyBignum.newBignum(getRuntime(), value).op_lshift(other);
  return op_lshift(((RubyFixnum)other).getLongValue());
}

/** fix_lshift 
 * 
 */
@JRubyMethod(name = "<<")
public IRubyObject op_lshift(IRubyObject other) {
  if (!(other instanceof RubyFixnum)) return RubyBignum.newBignum(getRuntime(), value).op_lshift(other);
  return op_lshift(((RubyFixnum)other).getLongValue());
}

private IRubyObject lshift(long width) {
  if (width > BIT_SIZE - 1 || ((~0L << BIT_SIZE - width - 1) & value) != 0) {
    return RubyBignum.newBignum(getRuntime(), value).op_lshift(RubyFixnum.newFixnum(getRuntime(), width));
  }
  return RubyFixnum.newFixnum(getRuntime(), value << width);
}

private IRubyObject lshift(long width) {
  if (width > BIT_SIZE - 1 || ((~0L << BIT_SIZE - width - 1) & value) != 0) {
    return RubyBignum.newBignum(getRuntime(), value).op_lshift(RubyFixnum.newFixnum(getRuntime(), width));
  }
  return RubyFixnum.newFixnum(getRuntime(), value << width);
}