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units: implement operators

This commit is contained in:
Sebastien Bourdeauducq 2014-05-30 19:00:33 +02:00
parent c769bdab9b
commit 732412e4c9
1 changed files with 46 additions and 0 deletions
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46
artiq/language/units.py
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@ -32,9 +32,55 @@ class Quantity:
return NotImplemented return NotImplemented
return Quantity(self.amount*other, self.unit) return Quantity(self.amount*other, self.unit)
def __neg__(self):
return Quantity(-self.amount, self.unit)
def __add__(self, other):
if self.unit != other.unit:
raise DimensionError
return Quantity(self.amount + other.amount, self.unit)
def __radd__(self, other):
if self.unit != other.unit:
raise DimensionError
return Quantity(other.amount + self.amount, self.unit)
def __sub__(self, other):
if self.unit != other.unit:
raise DimensionError
return Quantity(self.amount - other.amount, self.unit)
def __rsub__(self, other):
if self.unit != other.unit:
raise DimensionError
return Quantity(other.amount - self.amount, self.unit)
def __lt__(self, other):
if self.unit != other.unit:
raise DimensionError
return self.amount < other.amount
def __le__(self, other):
if self.unit != other.unit:
raise DimensionError
return self.amount <= other.amount
def __eq__(self, other):
if self.unit != other.unit:
raise DimensionError
return self.amount == other.amount
def __ne__(self, other):
if self.unit != other.unit:
raise DimensionError
return self.amount != other.amount
def __gt__(self, other):
if self.unit != other.unit:
raise DimensionError
return self.amount > other.amount
def __ge__(self, other):
if self.unit != other.unit:
raise DimensionError
return self.amount >= other.amount
def check_unit(value, unit): def check_unit(value, unit):
if not isinstance(value, Quantity) or value.unit != unit: if not isinstance(value, Quantity) or value.unit != unit:
raise DimensionError raise DimensionError
return value.amount
def _register_unit(base_prefix, name, prefixes): def _register_unit(base_prefix, name, prefixes):
base_prefix_exp = _prefixes_str.index(base_prefix) base_prefix_exp = _prefixes_str.index(base_prefix)