def parse_pattern(text, engine, flags=0, alphabet=None):
'''
Parse a standard regular expression.
'''
from lepl.rxpy.compat.support import default_alphabet
alphabet = default_alphabet(alphabet, text)
parser_state = ParserState(alphabet=alphabet, flags=flags,
refuse=engine.REFUSE, require=engine.REQUIRE)
return parse(text, parser_state, SequenceBuilder)
def parse_pattern(text, engine, flags=0, alphabet=None):
'''
Parse a standard regular expression.
'''
from lepl.rxpy.compat.support import default_alphabet
alphabet = default_alphabet(alphabet, text)
parser_state = ParserState(alphabet=alphabet,
flags=flags,
refuse=engine.REFUSE,
require=engine.REQUIRE)
return parse(text, parser_state, SequenceBuilder)
def parse_groups(texts, engine, flags=0, alphabet=None):
'''
Parse set of expressions, used to define groups for `Scanner`.
'''
from lepl.rxpy.compat.support import default_alphabet
if not texts:
raise ValueError('Empty set of texts for scanner')
alphabet = default_alphabet(alphabet, texts[0])
parser_state = ParserState(flags=flags, alphabet=alphabet,
refuse=engine.REFUSE, require=engine.REQUIRE)
sequence = SequenceBuilder(parser_state)
for text in texts:
sequence.parse_group(text)
if parser_state.has_new_flags:
parser_state = parser_state.clone_with_new_flags(texts[0])
sequence = SequenceBuilder(parser_state)
for text in texts:
sequence.parse_group(text)
if parser_state.has_new_flags:
raise RxpyError('Inconsistent flags')
return parser_state, sequence.to_sequence().join(Match(), parser_state)
def parse_groups(texts, engine, flags=0, alphabet=None):
'''
Parse set of expressions, used to define groups for `Scanner`.
'''
from lepl.rxpy.compat.support import default_alphabet
if not texts:
raise ValueError('Empty set of texts for scanner')
alphabet = default_alphabet(alphabet, texts[0])
parser_state = ParserState(flags=flags,
alphabet=alphabet,
refuse=engine.REFUSE,
require=engine.REQUIRE)
sequence = SequenceBuilder(parser_state)
for text in texts:
sequence.parse_group(text)
if parser_state.has_new_flags:
parser_state = parser_state.clone_with_new_flags(texts[0])
sequence = SequenceBuilder(parser_state)
for text in texts:
sequence.parse_group(text)
if parser_state.has_new_flags:
raise RxpyError('Inconsistent flags')
return parser_state, sequence.to_sequence().join(Match(), parser_state)