static time_rep_type get_time_rep(const date_type& day,
const time_duration_type& tod,
date_time::dst_flags /* dst */ = not_dst)
{
if(day.is_special() || tod.is_special()) {
if(day.is_not_a_date() || tod.is_not_a_date_time()) {
return time_rep_type(date_type(not_a_date_time),
time_duration_type(not_a_date_time));
}
else if(day.is_pos_infinity()) {
if(tod.is_neg_infinity()) {
return time_rep_type(date_type(not_a_date_time),
time_duration_type(not_a_date_time));
}
else {
return time_rep_type(day, time_duration_type(pos_infin));
}
}
else if(day.is_neg_infinity()) {
if(tod.is_pos_infinity()) {
return time_rep_type(date_type(not_a_date_time),
time_duration_type(not_a_date_time));
}
else {
return time_rep_type(day, time_duration_type(neg_infin));
}
}
else if(tod.is_pos_infinity()) {
if(day.is_neg_infinity()) {
return time_rep_type(date_type(not_a_date_time),
time_duration_type(not_a_date_time));
}
else {
return time_rep_type(date_type(pos_infin), tod);
}
}
else if(tod.is_neg_infinity()) {
if(day.is_pos_infinity()) {
return time_rep_type(date_type(not_a_date_time),
time_duration_type(not_a_date_time));
}
else {
return time_rep_type(date_type(neg_infin), tod);
}
}
}
return time_rep_type(day, tod);
}
//! Convert to a date to standard string using format policies
static std::string date_to_string(date_type d)
{
typedef typename date_type::ymd_type ymd_type;
if (d.is_not_a_date()) {
return format_type::not_a_date();
}
if (d.is_neg_infinity()) {
return format_type::neg_infinity();
}
if (d.is_pos_infinity()) {
return format_type::pos_infinity();
}
ymd_type ymd = d.year_month_day();
return ymd_formatter<ymd_type, format_type>::ymd_to_string(ymd);
}
bool is_pos_infinity()const
{
return(day.is_pos_infinity() || time_of_day.is_pos_infinity());
}
