def get_default_tokenizer(cls):
return tokenizers.create_shlex_tokenizer(
with_bof=True,
with_eof=True,
wordchars=string.ascii_uppercase + string.ascii_lowercase +
string.digits + '_.',
)
def test_basic_tokenizer_yields_token_and_lookahead():
tokenizer = tokenizers.create_shlex_tokenizer()
tokens = list(ShiftReduceParser.tokenize_with_lookahead(tokenizer, ''))
assert len(tokens) == 0
tokens = list(ShiftReduceParser.tokenize_with_lookahead(
tokenizer, 'a b c'))
assert len(tokens) == 3
assert tokens[0] == ('a', 'b')
assert tokens[1] == ('b', 'c')
assert tokens[2] == ('c', None)
def test_tokenizer_with_bof_yields_token_and_lookahead():
tokenizer = tokenizers.create_shlex_tokenizer(with_bof=True)
tokens = list(ShiftReduceParser.tokenize_with_lookahead(tokenizer, ''))
assert len(tokens) == 1
assert tokens[0] == (BOF_VALUE, None)
tokens = list(ShiftReduceParser.tokenize_with_lookahead(
tokenizer, 'a b c'))
assert len(tokens) == 4
assert tokens[0] == (BOF_VALUE, 'a')
assert tokens[1] == ('a', 'b')
assert tokens[2] == ('b', 'c')
assert tokens[3] == ('c', None)
def get_default_tokenizer(cls):
return create_shlex_tokenizer(wordchars=string.digits + '.')
def get_default_tokenizer(cls):
return tokenizers.create_shlex_tokenizer()
def get_default_tokenizer(cls):
return tokenizers.create_shlex_tokenizer(
with_bof=True,
with_eof=True,
wordchars=string.digits + '.',
)