def evaluate(self, calculator, divide=False):
child = self.child.evaluate(calculator, divide)
if isinstance(child, String):
contents = child.value
quotes = child.quotes
else:
# TODO compress
contents = child.render()
quotes = None
# TODO unclear if this is the right place for this logic, or if it
# should go in the Function constructor, or should be passed in
# explicitly by the grammar, or even if Url should go away entirely
if self.function_name == "url":
return Url(contents, quotes=quotes)
else:
return Function(contents, self.function_name, quotes=quotes)
def atom(self):
_token_ = self._peek(self.u_expr_chks)
if _token_ == 'LPAR':
LPAR = self._scan('LPAR')
_token_ = self._peek(self.atom_rsts)
if _token_ == 'RPAR':
v = ListLiteral([], comma=False)
elif _token_ not in self.argspec_item_chks:
expr_map = self.expr_map()
v = expr_map
else: # in self.argspec_item_chks
expr_lst = self.expr_lst()
v = expr_lst
RPAR = self._scan('RPAR')
return Parentheses(v)
elif _token_ == '"url"':
self._scan('"url"')
LPAR = self._scan('LPAR')
_token_ = self._peek(self.atom_rsts_)
if _token_ == 'URL':
URL = self._scan('URL')
quotes = None
elif _token_ == '"\\""':
self._scan('"\\""')
URL = self._scan('URL')
self._scan('"\\""')
quotes = '"'
else: # == '"\'"'
self._scan('"\'"')
URL = self._scan('URL')
self._scan('"\'"')
quotes = "'"
RPAR = self._scan('RPAR')
return Literal(Url(URL, quotes=quotes))
elif _token_ == 'FNCT':
FNCT = self._scan('FNCT')
LPAR = self._scan('LPAR')
argspec = self.argspec()
RPAR = self._scan('RPAR')
return CallOp(FNCT, argspec)
elif _token_ == 'BANG_IMPORTANT':
BANG_IMPORTANT = self._scan('BANG_IMPORTANT')
return Literal(String(BANG_IMPORTANT, quotes=None))
elif _token_ == 'ID':
ID = self._scan('ID')
return Literal(parse_bareword(ID))
elif _token_ == 'NUM':
NUM = self._scan('NUM')
UNITS = None
if self._peek(self.atom_rsts__) == 'UNITS':
UNITS = self._scan('UNITS')
return Literal(Number(float(NUM), unit=UNITS))
elif _token_ == 'STR':
STR = self._scan('STR')
return Literal(String(dequote(STR), quotes="'"))
elif _token_ == 'QSTR':
QSTR = self._scan('QSTR')
return Literal(String(dequote(QSTR), quotes='"'))
elif _token_ == 'COLOR':
COLOR = self._scan('COLOR')
return Literal(Color.from_hex(COLOR, literal=True))
else: # == 'VAR'
VAR = self._scan('VAR')
return Variable(VAR)
