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"""Support functions for app-level _sre tests."""
import locale, _sre
from sre_constants import OPCODES as _OPCODES
from sre_constants import ATCODES as _ATCODES
from sre_constants import CHCODES as _CHCODES
from sre_constants import MAXREPEAT, SRE_FLAG_UNICODE, SRE_FLAG_LOCALE
OPCODES = {_opcode.name.lower(): int(_opcode) for _opcode in _OPCODES}
ATCODES = {_atcode.name.lower(): int(_atcode) for _atcode in _ATCODES}
CHCODES = {_chcode.name.lower(): int(_chcode) for _chcode in _CHCODES}
def encode_literal(string):
opcodes = []
for character in string:
opcodes.extend([OPCODES["literal"], ord(character)])
return opcodes
def assert_match(opcodes, strings):
assert_something_about_match(lambda x: x, opcodes, strings)
def assert_no_match(opcodes, strings):
assert_something_about_match(lambda x: not x, opcodes, strings)
def assert_something_about_match(assert_modifier, opcodes, strings):
if isinstance(strings, str):
strings = [strings]
for string in strings:
assert assert_modifier(search(opcodes, string))
def search(opcodes, string):
pattern = _sre.compile("ignore", 0, opcodes, 0, {}, None)
return pattern.search(string)
def void_locale():
locale.setlocale(locale.LC_ALL, (None, None))
def assert_lower_equal(tests, flags):
if flags == 0:
checkerfn = _sre.ascii_tolower
elif flags == SRE_FLAG_UNICODE:
checkerfn = _sre.unicode_tolower
else:
assert False # SRE_FLAG_LOCALE: not supported, and not needed, since 3.7
for arg, expected in tests:
assert ord(expected) == checkerfn(ord(arg))
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