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"""
Test for cases that cannot be produced using the Python 2.7 sre_compile
module, but can be produced by other means (e.g. Python 3.5)
"""
from rpython.rlib.rsre import rsre_core, rsre_constants
from rpython.rlib.rsre.rsre_char import MAXREPEAT
from rpython.rlib.rsre.test.support import match, Position
# import OPCODE_XX as XX
for name, value in rsre_constants.__dict__.items():
if name.startswith('OPCODE_') and isinstance(value, int):
globals()[name[7:]] = value
def test_repeat_one_with_backref():
# Python 3.5 compiles "(.)\1*" using REPEAT_ONE instead of REPEAT:
# it's a valid optimization because \1 is always one character long
r = [MARK, 0, ANY, MARK, 1, REPEAT_ONE, 6, 0, MAXREPEAT,
GROUPREF, 0, SUCCESS, SUCCESS]
assert rsre_core.match(rsre_core.CompiledPattern(r, 0), "aaa").match_end == 3
def test_min_repeat_one_with_backref():
# Python 3.5 compiles "(.)\1*?b" using MIN_REPEAT_ONE
r = [MARK, 0, ANY, MARK, 1, MIN_REPEAT_ONE, 6, 0, MAXREPEAT,
GROUPREF, 0, SUCCESS, LITERAL, 98, SUCCESS]
assert rsre_core.match(rsre_core.CompiledPattern(r, 0), "aaab").match_end == 4
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