public static YearMonthDurationValue Multiply(YearMonthDurationValue a, double b)
{
if (Double.IsNaN(b) || Double.IsNegativeInfinity(b) || Double.IsPositiveInfinity(b))
{
throw new XPath2Exception("FOCA0005", Resources.FOCA0005);
}
int month = (int)Math.Floor(0.5 + DaysToMonth(a.HighPartValue.Days) * b);
return(new YearMonthDurationValue(new TimeSpan(MonthToDays(month), 0, 0, 0)));
}
int IComparable.CompareTo(object obj)
{
YearMonthDurationValue other = obj as YearMonthDurationValue;
if (other == null)
{
throw new ArgumentException("obj");
}
return(HighPartValue.CompareTo(other.HighPartValue));
}
protected override ValueProxy Mul(ValueProxy value)
{
if (value.IsNumeric())
{
return(new Proxy(YearMonthDurationValue.Multiply(_value, Convert.ToDouble(value))));
}
throw new XPath2Exception("", Properties.Resources.BinaryOperatorNotDefined, "op:mul",
new SequenceType(_value.GetType(), XmlTypeCardinality.One),
new SequenceType(value.Value.GetType(), XmlTypeCardinality.One));
}
public static decimal Divide(YearMonthDurationValue a, YearMonthDurationValue b)
{
int month1 = DaysToMonth(a.HighPartValue.Days);
int month2 = DaysToMonth(b.HighPartValue.Days);
if (month2 == 0)
{
throw new XPath2Exception("FOAR0001", Resources.FOAR0001);
}
return((decimal)month1 / (decimal)month2);
}
public static YearMonthDurationValue Divide(YearMonthDurationValue a, double b)
{
if (b == 0.0)
{
throw new XPath2Exception("FOAR0001", Resources.FOAR0001);
}
if (Double.IsNaN(b))
{
throw new XPath2Exception("FOCA0005", Resources.FOCA0005);
}
int month = (int)Math.Floor(0.5 + DaysToMonth(a.HighPartValue.Days) / b);
return(new YearMonthDurationValue(new TimeSpan(MonthToDays(month), 0, 0, 0)));
}
protected override ValueProxy Div(ValueProxy value)
{
if (value.IsNumeric())
{
return(new Proxy(YearMonthDurationValue.Divide(_value, Convert.ToDouble(value))));
}
else if (value.GetValueCode() == YearMonthDurationValue.ProxyValueCode)
{
return(new DecimalProxy(YearMonthDurationValue.Divide(_value, (YearMonthDurationValue)value.Value)));
}
else
{
throw new XPath2Exception("", Properties.Resources.BinaryOperatorNotDefined, "op:div",
new SequenceType(_value.GetType(), XmlTypeCardinality.One),
new SequenceType(value.Value.GetType(), XmlTypeCardinality.One));
}
}
protected override ValueProxy Mul(ValueProxy val)
{
switch (val.GetValueCode())
{
case YearMonthDurationValue.ProxyValueCode:
return(new YearMonthDurationValue.Proxy(
YearMonthDurationValue.Multiply((YearMonthDurationValue)val.Value, Convert.ToDouble(_value))));
case DayTimeDurationValue.ProxyValueCode:
return(new DayTimeDurationValue.Proxy(
DayTimeDurationValue.Multiply((DayTimeDurationValue)val.Value, Convert.ToDouble(_value))));
default:
throw new XPath2Exception("", Resources.BinaryOperatorNotDefined, "op:mul",
new SequenceType(Value.GetType(), XmlTypeCardinality.One),
new SequenceType(val.Value.GetType(), XmlTypeCardinality.One));
}
}
public static DateValue Add(DateValue dat, YearMonthDurationValue duration)
{
try
{
Calendar calender = CultureInfo.InvariantCulture.Calendar;
DateTime dt = dat.Value.DateTime;
int year = dat.S ? -dt.Year : dt.Year - 1;
int m = (dt.Month - 1) + duration.Months;
year = year + duration.Years + m / 12;
if (year >= 0)
{
year = year + 1;
}
m = m % 12;
if (m < 0)
{
m += 12;
year -= 1;
}
m++;
int day = Math.Min(dt.Day, calender.GetDaysInMonth(Math.Abs(year), m));
if (year < 0)
{
dt = new DateTime(-year, m, day);
}
else
{
dt = new DateTime(year, m, day);
}
if (dat.IsLocal)
{
return(new DateValue(year < 0, dt));
}
else
{
return(new DateValue(year < 0, new DateTimeOffset(dt, dat.Value.Offset)));
}
}
catch (ArgumentOutOfRangeException)
{
throw new XPath2Exception("FODT0001", Properties.Resources.FODT0001);
}
}
public Proxy(YearMonthDurationValue value)
{
_value = value;
}
