def parse_bareword(word):
if word in COLOR_NAMES:
return Color.from_name(word)
elif word == 'null':
return Null()
elif word == 'undefined':
return Undefined()
elif word == 'true':
return Boolean(True)
elif word == 'false':
return Boolean(False)
else:
return String(word, quotes=None)
def from_bareword(cls, word):
if word in COLOR_NAMES:
value = Color.from_name(word)
elif word == 'null':
value = Null()
elif word == 'undefined':
value = Undefined()
elif word == 'true':
value = Boolean(True)
elif word == 'false':
value = Boolean(False)
else:
value = String(word, quotes=None)
return cls(value)
def evaluate(self, calculator, divide=False):
try:
value = calculator.namespace.variable(self.name)
except KeyError:
if FATAL_UNDEFINED:
raise
else:
log.error("Undefined variable '%s'",
self.name,
extra={'stack': True})
return Undefined()
else:
if isinstance(value, six.string_types):
evald = calculator.evaluate_expression(value)
if evald is not None:
return evald
return value
def evaluate(self, calculator, divide=False):
try:
value = calculator.namespace.variable(self.name)
except KeyError:
if calculator.undefined_variables_fatal:
raise SyntaxError("Undefined variable: '%s'." % self.name)
else:
log.error("Undefined variable '%s'", self.name, extra={'stack': True})
return Undefined()
else:
if isinstance(value, six.string_types):
log.warn(
"Expected a Sass type for the value of {0}, "
"but found a string expression: {1!r}"
.format(self.name, value)
)
evald = calculator.evaluate_expression(value)
if evald is not None:
return evald
return value