def test_we_can_chain_many_with_something_else(runner):
p = many(
literal('a')
)
p = bind(
p,
lambda _: literal('b'),
)
assert runner(p, 'aaaab').value == 'b'
def test_stack_performance_with_many_choices(
benchmark,
input_string,
runner,
):
parser = many(
choices(
literal('a'),
literal('b'),
literal('c'),
literal('d'),
))
benchmark(
runner,
parser,
input_string,
)
def test_many1_behaves_like_many_for_1_occurence(runner):
p = literal('a')
assert runner(many1(p), 'a').value == runner(many(p), 'a').value
def test_many_parses_5_occurences(runner):
p = many(
literal('a')
)
assert runner(p, 'aaaaa').value == ['a'] * 5
def test_many_parses_empty_strings(runner):
p = many(
literal('a')
)
assert runner(p, '').value == []