◆ INPUT_AGG_TRANS_STATE

#define INPUT_AGG_TRANS_STATE	(	fcinfo,
		state
	)

Value:

  do {  \
    MemoryContext ctx = set_aggregation_context(fcinfo); \
    state = PG_ARGISNULL(0) ? NULL : (SkipList *) PG_GETARG_POINTER(0);  \
    if (PG_ARGISNULL(1))  \
    {  \
      if (state)  \
        PG_RETURN_POINTER(state);  \
      else  \
        PG_RETURN_NULL();  \
    }  \
    unset_aggregation_context(ctx); \
  } while (0)

Helper macros to input the current aggregate state.