SHIFT_IN
if (st->shift == SHIFT_IN) {
st->shift = SHIFT_IN;
if (st->shift == SHIFT_IN) {
case SHIFT_IN :
st->shift = SHIFT_IN;
*buf = SHIFT_IN;
st->shift = SHIFT_IN;
if ( st->shift == SHIFT_IN ) {
st->shift = SHIFT_IN;
st->shift = SHIFT_IN;
st->shift = SHIFT_IN;
st->_st_status = SHIFT_IN;
st->_st_status = SHIFT_IN;
if (st->_st_status == SHIFT_IN ) {
st->_st_status = SHIFT_IN;
st->_st_status = SHIFT_IN;
st->_st_status = SHIFT_IN;
st->_st_status = SHIFT_IN;
st->shift = SHIFT_IN;
st->shift = SHIFT_IN;
st->shift = SHIFT_IN;
st->shift = SHIFT_IN;