def __init__(self, expressions, element):
self.expressions = []
self._is_constant = True
for e in expressions:
expr = UnitExpression(e, element)
self.expressions.append(expr)
self._is_constant = self._is_constant and expr.is_constant()
if self._is_constant:
self.value = self._evaluate()
def __init__(self, expressions, element):
self.expressions = []
self._is_constant = True
for e in expressions:
if _LIST_COMPONENTS_ARE_CONSTANT:
expr = constant_expression(e)
else:
expr = UnitExpression(e, element)
self.expressions.append(expr)
self._is_constant = self._is_constant and expr.is_constant()
if self._is_constant:
self.value = self._evaluate()
def __init__(self, expressions, element):
self.expressions = []
self._is_constant = True
for e in expressions:
if _LIST_COMPONENTS_ARE_CONSTANT:
expr = constant_expression(e)
else:
expr = UnitExpression(e, element)
self.expressions.append(expr)
self._is_constant = self._is_constant and expr.is_constant()
if self._is_constant:
self.value = self._evaluate()
def variable(description, element):
if not isinstance(description, dict):
return UnitExpression(description, element)
description = copy.copy(description)
vtype = description.pop('type', None)
if not vtype:
raise Exception('No type in variable, description="%s".' % description)
return REGISTRY.function(vtype)(description, element)
def expression(expr, element):
try:
if isinstance(expr, dict):
return Envelope(expr, element)
if isinstance(expr, (list, tuple)):
return ListExpression(expr, element)
if isinstance(expr, six.string_types) and ',' in expr:
return ListExpression(expr.split(','), element)
return UnitExpression(expr, element)
except Exception as e:
e.message = "Couldn't evaluate expression %s because %s" % (
expr, e.message)
raise
def convert(number, element=None, assume_minutes=True):
if number is None:
return number
return UnitExpression(number, element, assume_minutes).evaluate()
def constant_expression(expr):
ue = UnitExpression(None)
ue.value = expr
return ue
