public TimeSpan Add(TimeSpan ts)
{
try
{
return(new TimeSpan(Int64.AddOvf(_ticks, ts.Ticks)));
}
catch (OverflowException)
{
throw new OverflowException(Locale.GetText("Resulting timespan is too big."));
}
}
public TimeSpan Execute()
{
bool sign;
int days;
int hours = 0;
int minutes;
int seconds;
long ticks;
// documented as...
// Parse [ws][-][dd.]hh:mm:ss[.ff][ws]
// ... but not entirely true as an lonely
// integer will be parsed as a number of days
ParseWhiteSpace();
sign = ParseSign();
days = ParseInt(false);
if (ParseOptDot())
{
hours = ParseInt(true);
}
else if (!AtEnd)
{
hours = days;
days = 0;
}
ParseOptColon();
minutes = ParseInt(true);
ParseOptColon();
seconds = ParseInt(true);
if (ParseOptDot())
{
ticks = ParseTicks();
}
else
{
ticks = 0;
}
ParseWhiteSpace();
if (!AtEnd)
{
formatError = true;
}
// Overflow has presceance over FormatException
if (hours > 23 || minutes > 59 || seconds > 59)
{
throw new OverflowException(
Locale.GetText("Invalid time data."));
}
else if (formatError)
{
throw new FormatException(
Locale.GetText("Invalid format for TimeSpan.Parse."));
}
try
{
long t = CalculateTicks(days, hours, minutes, seconds, 0);
return(new TimeSpan(sign ? Int64.SubOvf(-t, ticks) : Int64.AddOvf(t, ticks)));
}
catch (ArgumentOutOfRangeException)
{
throw new OverflowException(
Locale.GetText("Invalid time data."));
}
}