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import re, random, py
from rpython.rlib.rsre import rsre_core, rsre_char
from rpython.rlib.rsre.rpy import get_code, VERSION
def get_code_and_re(regexp):
return get_code(regexp), re.compile(regexp)
def test_get_code_repetition():
c1 = get_code(r"a+")
c2 = get_code(r"a+")
assert c1.pattern == c2.pattern
class TestMatch:
def test_or(self):
r = get_code(r"a|bc|def")
assert rsre_core.match(r, "a")
assert rsre_core.match(r, "bc")
assert rsre_core.match(r, "def")
assert not rsre_core.match(r, "ghij")
def test_any(self):
r = get_code(r"ab.cd")
assert rsre_core.match(r, "abXcdef")
assert not rsre_core.match(r, "ab\ncdef")
assert not rsre_core.match(r, "abXcDef")
def test_any_repetition(self):
r = get_code(r"ab.*cd")
assert rsre_core.match(r, "abXXXXcdef")
assert rsre_core.match(r, "abcdef")
assert not rsre_core.match(r, "abX\nXcdef")
assert not rsre_core.match(r, "abXXXXcDef")
def test_any_all(self):
r = get_code(r"(?s)ab.cd")
assert rsre_core.match(r, "abXcdef")
assert rsre_core.match(r, "ab\ncdef")
assert not rsre_core.match(r, "ab\ncDef")
def test_any_all_repetition(self):
r = get_code(r"(?s)ab.*cd")
assert rsre_core.match(r, "abXXXXcdef")
assert rsre_core.match(r, "abcdef")
assert rsre_core.match(r, "abX\nXcdef")
assert not rsre_core.match(r, "abX\nXcDef")
def test_assert(self):
r = get_code(r"abc(?=def)(.)")
res = rsre_core.match(r, "abcdefghi")
assert res is not None and res.get_mark(1) == 4
assert not rsre_core.match(r, "abcdeFghi")
def test_assert_not(self):
r = get_code(r"abc(?!def)(.)")
res = rsre_core.match(r, "abcdeFghi")
assert res is not None and res.get_mark(1) == 4
assert not rsre_core.match(r, "abcdefghi")
def test_lookbehind(self):
r = get_code(r"([a-z]*)(?<=de)")
assert rsre_core.match(r, "ade")
res = rsre_core.match(r, "adefg")
assert res is not None and res.get_mark(1) == 3
assert not rsre_core.match(r, "abc")
assert not rsre_core.match(r, "X")
assert not rsre_core.match(r, "eX")
def test_negative_lookbehind(self):
def found(s):
res = rsre_core.match(r, s)
assert res is not None
return res.get_mark(1)
r = get_code(r"([a-z]*)(?<!dd)")
assert found("ade") == 3
assert found("adefg") == 5
assert found("abcdd") == 4
assert found("abddd") == 3
assert found("adddd") == 2
assert found("ddddd") == 1
assert found("abXde") == 2
def test_at(self):
r = get_code(r"abc$")
assert rsre_core.match(r, "abc")
assert not rsre_core.match(r, "abcd")
assert not rsre_core.match(r, "ab")
def test_repeated_set(self):
r = get_code(r"[a0x]+f")
assert rsre_core.match(r, "a0af")
assert not rsre_core.match(r, "a0yaf")
def test_category(self):
r = get_code(r"[\sx]")
assert rsre_core.match(r, "x")
assert rsre_core.match(r, " ")
assert not rsre_core.match(r, "n")
def test_groupref(self):
r = get_code(r"(xx+)\1+$") # match non-prime numbers of x
assert not rsre_core.match(r, "xx")
assert not rsre_core.match(r, "xxx")
assert rsre_core.match(r, "xxxx")
assert not rsre_core.match(r, "xxxxx")
assert rsre_core.match(r, "xxxxxx")
assert not rsre_core.match(r, "xxxxxxx")
assert rsre_core.match(r, "xxxxxxxx")
assert rsre_core.match(r, "xxxxxxxxx")
def test_groupref_ignore(self):
r = get_code(r"(?i)(xx+)\1+$") # match non-prime numbers of x
assert not rsre_core.match(r, "xX")
assert not rsre_core.match(r, "xxX")
assert rsre_core.match(r, "Xxxx")
assert not rsre_core.match(r, "xxxXx")
assert rsre_core.match(r, "xXxxxx")
assert not rsre_core.match(r, "xxxXxxx")
assert rsre_core.match(r, "xxxxxxXx")
assert rsre_core.match(r, "xxxXxxxxx")
def test_groupref_exists(self):
r = get_code(r"((a)|(b))c(?(2)d)$")
assert not rsre_core.match(r, "ac")
assert rsre_core.match(r, "acd")
assert rsre_core.match(r, "bc")
assert not rsre_core.match(r, "bcd")
#
r = get_code(r"((a)|(b))c(?(2)d|e)$")
assert not rsre_core.match(r, "ac")
assert rsre_core.match(r, "acd")
assert not rsre_core.match(r, "ace")
assert not rsre_core.match(r, "bc")
assert not rsre_core.match(r, "bcd")
assert rsre_core.match(r, "bce")
def test_in_ignore(self):
r = get_code(r"(?i)[a-f]")
assert rsre_core.match(r, "b")
assert rsre_core.match(r, "C")
assert not rsre_core.match(r, "g")
r = get_code(r"(?i)[a-f]+$")
assert rsre_core.match(r, "bCdEf")
assert not rsre_core.match(r, "g")
assert not rsre_core.match(r, "aaagaaa")
def test_not_literal(self):
r = get_code(r"[^a]")
assert rsre_core.match(r, "A")
assert not rsre_core.match(r, "a")
r = get_code(r"[^a]+$")
assert rsre_core.match(r, "Bx123")
assert not rsre_core.match(r, "--a--")
def test_not_literal_ignore(self):
r = get_code(r"(?i)[^a]")
assert rsre_core.match(r, "G")
assert not rsre_core.match(r, "a")
assert not rsre_core.match(r, "A")
r = get_code(r"(?i)[^a]+$")
assert rsre_core.match(r, "Gx123")
assert not rsre_core.match(r, "--A--")
def test_repeated_single_character_pattern(self):
r = get_code(r"foo(?:(?<=foo)x)+$")
assert rsre_core.match(r, "foox")
def test_flatten_marks(self):
r = get_code(r"a(b)c((d)(e))+$")
res = rsre_core.match(r, "abcdedede")
assert res.flatten_marks() == [0, 9, 1, 2, 7, 9, 7, 8, 8, 9]
assert res.flatten_marks() == [0, 9, 1, 2, 7, 9, 7, 8, 8, 9]
def test_bug1(self):
# REPEAT_ONE inside REPEAT
r = get_code(r"(?:.+)?B")
assert rsre_core.match(r, "AB") is not None
r = get_code(r"(?:AA+?)+B")
assert rsre_core.match(r, "AAAB") is not None
r = get_code(r"(?:AA+)+?B")
assert rsre_core.match(r, "AAAB") is not None
r = get_code(r"(?:AA+?)+?B")
assert rsre_core.match(r, "AAAB") is not None
# REPEAT inside REPEAT
r = get_code(r"(?:(?:xy)+)?B")
assert rsre_core.match(r, "xyB") is not None
r = get_code(r"(?:xy(?:xy)+?)+B")
assert rsre_core.match(r, "xyxyxyB") is not None
r = get_code(r"(?:xy(?:xy)+)+?B")
assert rsre_core.match(r, "xyxyxyB") is not None
r = get_code(r"(?:xy(?:xy)+?)+?B")
assert rsre_core.match(r, "xyxyxyB") is not None
def test_assert_group(self):
r = get_code(r"abc(?=(..)f)(.)")
res = rsre_core.match(r, "abcdefghi")
assert res is not None
assert res.span(2) == (3, 4)
assert res.span(1) == (3, 5)
def test_assert_not_group(self):
r = get_code(r"abc(?!(de)f)(.)")
res = rsre_core.match(r, "abcdeFghi")
assert res is not None
assert res.span(2) == (3, 4)
# this I definitely classify as Horrendously Implementation Dependent.
# CPython answers (3, 5).
assert res.span(1) == (-1, -1)
def test_match_start(self):
r = get_code(r"^ab")
assert rsre_core.match(r, "abc")
assert not rsre_core.match(r, "xxxabc", start=3)
assert not rsre_core.match(r, "xx\nabc", start=3)
#
r = get_code(r"(?m)^ab")
assert rsre_core.match(r, "abc")
assert not rsre_core.match(r, "xxxabc", start=3)
assert rsre_core.match(r, "xx\nabc", start=3)
def test_match_end(self):
r = get_code("ab")
assert rsre_core.match(r, "abc")
assert rsre_core.match(r, "abc", end=333)
assert rsre_core.match(r, "abc", end=3)
assert rsre_core.match(r, "abc", end=2)
assert not rsre_core.match(r, "abc", end=1)
assert not rsre_core.match(r, "abc", end=0)
assert not rsre_core.match(r, "abc", end=-1)
def test_match_bug1(self):
r = get_code(r'(x??)?$')
assert rsre_core.match(r, "x")
def test_match_bug2(self):
r = get_code(r'(x??)??$')
assert rsre_core.match(r, "x")
def test_match_bug3(self):
if VERSION == "2.7.5":
py.test.skip("pattern fails to compile with exactly 2.7.5 "
"(works on 2.7.3 and on 2.7.trunk though)")
r = get_code(r'([ax]*?x*)?$')
assert rsre_core.match(r, "aaxaa")
def test_bigcharset(self):
for i in range(100):
chars = [unichr(random.randrange(0x100, 0xD000))
for n in range(random.randrange(1, 25))]
pattern = u'[%s]' % (u''.join(chars),)
r = get_code(pattern)
for c in chars:
assert rsre_core.match(r, c)
for i in range(200):
c = unichr(random.randrange(0x0, 0xD000))
res = rsre_core.match(r, c)
if c in chars:
assert res is not None
else:
assert res is None
def test_simple_match_1(self):
r = get_code(r"ab*bbbbbbbc")
print r
match = rsre_core.match(r, "abbbbbbbbbcdef")
assert match
assert match.match_end == 11
def test_empty_maxuntil(self):
r = get_code("\\{\\{((?:.*?)+)\\}\\}")
match = rsre_core.match(r, "{{a}}{{b}}")
assert match.group(1) == "a"
def test_fullmatch_1(self):
r = get_code(r"ab*c")
assert not rsre_core.fullmatch(r, "abbbcdef")
assert rsre_core.fullmatch(r, "abbbc")
def test_fullmatch_2(self):
r = get_code(r"a(b*?)")
match = rsre_core.fullmatch(r, "abbb")
assert match.group(1) == "bbb"
assert not rsre_core.fullmatch(r, "abbbc")
def test_fullmatch_3(self):
r = get_code(r"a((bp)*?)c")
match = rsre_core.fullmatch(r, "abpbpbpc")
assert match.group(1) == "bpbpbp"
def test_fullmatch_4(self):
r = get_code(r"a((bp)*)c")
match = rsre_core.fullmatch(r, "abpbpbpc")
assert match.group(1) == "bpbpbp"
def test_fullmatch_assertion(self):
r = get_code(r"(?=a).b")
assert rsre_core.fullmatch(r, "ab")
r = get_code(r"(?!a)..")
assert not rsre_core.fullmatch(r, "ab")
def test_range_ignore(self):
from rpython.rlib.unicodedata import unicodedb
rsre_char.set_unicode_db(unicodedb)
#
r = get_code(u"[\U00010428-\U0001044f]", re.I)
assert r.pattern.count(27) == 1 # OPCODE_RANGE
r.pattern[r.pattern.index(27)] = 32 # => OPCODE_RANGE_IGNORE
assert rsre_core.match(r, u"\U00010428")
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