inline
std::basic_istream<charT>& operator>>(std::basic_istream<charT>& is, time_duration& td)
{
// need to create a std::string and parse it
std::basic_string<charT> inp_s;
std::stringstream out_ss;
is >> inp_s;
typename std::basic_string<charT>::iterator b = inp_s.begin();
// need to use both iterators because there is no requirement
// for the data held by a std::basic_string<> be terminated with
// any marker (such as '\0').
typename std::basic_string<charT>::iterator e = inp_s.end();
while(b != e){
out_ss << is.narrow(*b, 0);
++b;
}
td = date_time::parse_delimited_time_duration<time_duration>(out_ss.str());
return is;
}
std::basic_istream<CharT,Traits>&
operator>>(std::basic_istream<CharT,Traits>& in, pcg128_t& value)
{
typename std::basic_istream<CharT,Traits>::sentry s(in);
if (!s)
return in;
constexpr auto BASE = pcg128_t(10ULL);
pcg128_t current(0ULL);
bool did_nothing = true;
bool overflow = false;
for(;;) {
CharT wide_ch = in.get();
if (!in.good())
break;
auto ch = in.narrow(wide_ch, '\0');
if (ch < '0' || ch > '9') {
in.unget();
break;
}
did_nothing = false;
pcg128_t digit(uint32_t(ch - '0'));
pcg128_t timesbase = current*BASE;
overflow = overflow || timesbase < current;
current = timesbase + digit;
overflow = overflow || current < digit;
}
if (did_nothing || overflow) {
in.setstate(std::ios::failbit);
if (overflow)
current = ~pcg128_t(0ULL);
}
value = current;
return in;
}