def compile(pattern, flags=None, alphabet=None, engine=None):
require_engine(engine)
if isinstance(pattern, RegexObject):
if flags is not None and flags != pattern.flags:
raise ValueError('Changed flags')
if alphabet is not None and alphabet != pattern.alphabet:
raise ValueError('Changed alphabet')
else:
if flags is None:
flags = 0
if isinstance(pattern, str):
hint_alphabet = Ascii()
elif isinstance(pattern, unicode):
hint_alphabet = Unicode()
else:
hint_alphabet = None
pattern = RegexObject(parse_pattern(pattern, engine, flags=flags,
alphabet=alphabet,
hint_alphabet=hint_alphabet),
pattern, engine=engine)
return pattern
def compile(pattern, flags=None, alphabet=None, engine=None):
require_engine(engine)
if isinstance(pattern, RegexObject):
if flags is not None and flags != pattern.flags:
raise ValueError('Changed flags')
if alphabet is not None and alphabet != pattern.alphabet:
raise ValueError('Changed alphabet')
else:
if flags is None:
flags = 0
if isinstance(pattern, str):
hint_alphabet = Ascii()
elif isinstance(pattern, unicode):
hint_alphabet = Unicode()
else:
hint_alphabet = None
pattern = RegexObject(parse_pattern(pattern,
engine,
flags=flags,
alphabet=alphabet,
hint_alphabet=hint_alphabet),
pattern,
engine=engine)
return pattern
def parse(self, regexp, flags=0, alphabet=None):
return parse_pattern(regexp,
self.default_engine(),
alphabet=alphabet if alphabet else self._alphabet,
flags=flags)
def parse(pattern, replacement):
(state, _graph) = parse_pattern(pattern, BaseEngine)
return parse_replace(replacement, state)
def parse(pattern, flags=0):
return parse_pattern(pattern, BaseEngine, flags=flags)
def parse(pattern, engine=BaseEngine, flags=0):
return parse_pattern(pattern, engine, flags=flags)
def parse(self, regexp, flags=0, alphabet=None):
return parse_pattern(regexp, self.default_engine(),
alphabet=alphabet if alphabet else self._alphabet,
flags=flags)