def Subtract(self, context, value):
if isinstance(value, DateValue):
td = self.value - value.value
return PeriodValue(delta=td)
elif isinstance(value, PeriodValue):
return self.minus(value)
else:
raise SyntaxError("Illegal: Date - " + type(value).__name__)
def Subtract(self, context, value):
if isinstance(value, TimeValue):
return PeriodValue(hours=self.value.hour - value.value.hour, \
minutes=self.value.minute - value.value.minute, \
seconds=self.value.second - value.value.second, \
millis=(self.value.microsecond - value.value.microsecond)/1000)
elif isinstance(value, PeriodValue):
return self.minus(value)
else:
raise SyntaxError("Illegal: Time - " + type(value).__name__)
def __init__(self, text):
super(PeriodLiteral, self).__init__(text,
PeriodValue.Parse(text[1:-1]))
def computeItem(self, index):
result = self.low.plusPeriod(PeriodValue(days=index - 1))
if result < self.low or result > self.high:
raise IndexOutOfRangeError()
return result
def computeItem(self, index):
result = self.low.plusPeriod(PeriodValue(days=index - 1))
if cmp(result, self.high) > 0:
raise IndexOutOfRangeError()
return result
def computeItem(self, index):
result = self.low.plus(PeriodValue(seconds=index - 1))
if cmp(result.value, self.high.value) > 0:
raise IndexOutOfRangeError()
return result