3 # This tests (?[...]). XXX These are just basic tests, as full ones would be
4 # best done with an infrastructure change to allow getting out the inversion
5 # list of the constructed set and then comparing it character by character
6 # with the expected result.
11 require './charset_tools.pl';
12 require './loc_tools.pl';
13 set_up_inc( '../lib','.','../ext/re' );
16 skip_all_without_unicode_tables();
24 no warnings 'experimental::regex_sets';
26 like("a", qr/(?[ [a] # This is a comment
27 ])/, 'Can ignore a comment');
28 like("a", qr/(?[ [a] # [[:notaclass:]]
29 ])/, 'A comment isn\'t parsed');
30 unlike(uni_to_native("\x85"), qr/(?[ \t
\85 ])/, 'NEL is white space');
31 like(uni_to_native("\x85"), qr/(?[ \t + \
\85 ])/, 'can escape NEL to match');
32 like(uni_to_native("\x85"), qr/(?[ [\
\85] ])/, '... including within nested []');
33 like("\t", qr/(?[ \t + \
\85 ])/, 'can do basic union');
34 like("\cK", qr/(?[ \s ])/, '\s matches \cK');
35 unlike("\cK", qr/(?[ \s - \cK ])/, 'can do basic subtraction');
36 like(" ", qr/(?[ \s - \cK ])/, 'can do basic subtraction');
37 like(":", qr/(?[ [:] ])/, '[:] is not a posix class');
38 unlike("\t", qr/(?[ ! \t ])/, 'can do basic complement');
39 like("\t", qr/(?[ ! [ ^ \t ] ])/, 'can do basic complement');
40 unlike("\r", qr/(?[ \t ])/, '\r doesn\'t match \t ');
41 like("\r", qr/(?[ ! \t ])/, 'can do basic complement');
42 like("0", qr/(?[ [:word:] & [:digit:] ])/, 'can do basic intersection');
43 unlike("A", qr/(?[ [:word:] & [:digit:] ])/, 'can do basic intersection');
44 like("0", qr/(?[[:word:]&[:digit:]])/, 'spaces around internal [] aren\'t required');
46 like("a", qr/(?[ [a] | [b] ])/, '| means union');
47 like("b", qr/(?[ [a] | [b] ])/, '| means union');
48 unlike("c", qr/(?[ [a] | [b] ])/, '| means union');
50 like("a", qr/(?[ [ab] ^ [bc] ])/, 'basic symmetric difference works');
51 unlike("b", qr/(?[ [ab] ^ [bc] ])/, 'basic symmetric difference works');
52 like("c", qr/(?[ [ab] ^ [bc] ])/, 'basic symmetric difference works');
54 like("2", qr/(?[ ( ( \pN & ( [a] + [2] ) ) ) ])/, 'Nesting parens and grouping');
55 unlike("a", qr/(?[ ( ( \pN & ( [a] + [2] ) ) ) ])/, 'Nesting parens and grouping');
57 unlike("\x{17f}", qr/(?[ [k] + \p{Blk=ASCII} ])/i, '/i doesn\'t affect \p{}');
58 like("\N{KELVIN SIGN}", qr/(?[ [k] + \p{Blk=ASCII} ])/i, '/i does affect literals');
60 my $thai_or_lao = qr/(?[ \p{Thai} + \p{Lao} ])/;
61 my $thai_or_lao_digit = qr/(?[ \p{Digit} & $thai_or_lao ])/;
62 like("\N{THAI DIGIT ZERO}", $thai_or_lao_digit, 'embedded qr/(?[ ])/ works');
63 unlike(chr(ord("\N{THAI DIGIT ZERO}") - 1), $thai_or_lao_digit, 'embedded qr/(?[ ])/ works');
64 like("\N{THAI DIGIT NINE}", $thai_or_lao_digit, 'embedded qr/(?[ ])/ works');
65 unlike(chr(ord("\N{THAI DIGIT NINE}") + 1), $thai_or_lao_digit, 'embedded qr/(?[ ])/ works');
66 like("\N{LAO DIGIT ZERO}", $thai_or_lao_digit, 'embedded qr/(?[ ])/ works');
67 unlike(chr(ord("\N{LAO DIGIT ZERO}") - 1), $thai_or_lao_digit, 'embedded qr/(?[ ])/ works');
68 like("\N{LAO DIGIT NINE}", $thai_or_lao_digit, 'embedded qr/(?[ ])/ works');
69 unlike(chr(ord("\N{LAO DIGIT NINE}") + 1), $thai_or_lao_digit, 'embedded qr/(?[ ])/ works');
71 my $ascii_word = qr/(?[ \w ])/a;
72 my $ascii_digits_plus_all_of_arabic = qr/(?[ \p{Arabic} + \p{Digit} & $ascii_word ])/;
73 like("9", $ascii_digits_plus_all_of_arabic, "/a, then interpolating and intersection works for ASCII in the set");
74 unlike("A", $ascii_digits_plus_all_of_arabic, "/a, then interpolating and intersection works for ASCII not in the set");
75 unlike("\N{BENGALI DIGIT ZERO}", $ascii_digits_plus_all_of_arabic, "/a, then interpolating and intersection works for non-ASCII not in either set");
76 unlike("\N{BENGALI LETTER A}", $ascii_digits_plus_all_of_arabic, "/a, then interpolating and intersection works for non-ASCII in one set");
77 like("\N{ARABIC LETTER HAMZA}", $ascii_digits_plus_all_of_arabic, "intersection has higher precedence than union");
78 like("\N{EXTENDED ARABIC-INDIC DIGIT ZERO}", $ascii_digits_plus_all_of_arabic, "intersection has higher precedence than union");
80 like("\r", qr/(?[ \p{lb=cr} ])/, '\r matches \p{lb=cr}');
81 unlike("\r", qr/(?[ ! \p{lb=cr} ])/, '\r doesnt match ! \p{lb=cr}');
82 like("\r", qr/(?[ ! ! \p{lb=cr} ])/, 'Two ! ! are the original');
83 unlike("\r", qr/(?[ ! ! ! \p{lb=cr} ])/, 'Three ! ! ! are the complement');
86 my $kelvin = qr/(?[ \N{KELVIN SIGN} ])/;
87 my $fold = qr/(?[ $kelvin ])/i;
88 like("\N{KELVIN SIGN}", $kelvin, '"\N{KELVIN SIGN}" matches compiled qr/(?[ \N{KELVIN SIGN} ])/');
89 unlike("K", $fold, "/i on outer (?[ ]) doesn't leak to interpolated one");
90 unlike("k", $fold, "/i on outer (?[ ]) doesn't leak to interpolated one");
92 my $kelvin_fold = qr/(?[ \N{KELVIN SIGN} ])/i;
93 my $still_fold = qr/(?[ $kelvin_fold ])/;
94 like("K", $still_fold, "/i on interpolated (?[ ]) is retained in outer without /i");
95 like("k", $still_fold, "/i on interpolated (?[ ]) is retained in outer without /i");
97 eval 'my $x = qr/(?[ [a] ])/; qr/(?[ $x ])/';
98 is($@, "", 'qr/(?[ [a] ])/ can be interpolated');
100 like("B", qr/(?[ [B] | ! ( [^B] ) ])/, "[perl #125892]");
102 like("a", qr/(?[ (?#comment) [a]])/, "Can have (?#comments)");
104 if (! is_miniperl() && locales_enabled('LC_CTYPE')) {
105 my $utf8_locale = find_utf8_ctype_locale;
107 skip("No utf8 locale available on this platform", 8) unless $utf8_locale;
109 setlocale(&POSIX::LC_ALL, "C");
112 $kelvin_fold = qr/(?[ \N{KELVIN SIGN} ])/i;
113 my $single_char_class = qr/(?[ \: ])/;
115 setlocale(&POSIX::LC_ALL, $utf8_locale);
117 like("\N{KELVIN SIGN}", $kelvin_fold,
118 '(?[ \N{KELVIN SIGN} ]) matches itself under /i in UTF8-locale');
119 like("K", $kelvin_fold,
120 '(?[ \N{KELVIN SIGN} ]) matches "K" under /i in UTF8-locale');
121 like("k", $kelvin_fold,
122 '(?[ \N{KELVIN SIGN} ]) matches "k" under /i in UTF8-locale');
123 like(":", $single_char_class,
124 '(?[ : ]) matches itself in UTF8-locale (a single character class)');
126 setlocale(&POSIX::LC_ALL, "C");
128 # These should generate warnings (the above 4 shouldn't), but like()
129 # suppresses them, so the warnings tests are in t/lib/warnings/regexec
130 $^W = 0; # Suppress the warnings that occur when run by hand with
132 like("\N{KELVIN SIGN}", $kelvin_fold,
133 '(?[ \N{KELVIN SIGN} ]) matches itself under /i in C locale');
134 like("K", $kelvin_fold,
135 '(?[ \N{KELVIN SIGN} ]) matches "K" under /i in C locale');
136 like("k", $kelvin_fold,
137 '(?[ \N{KELVIN SIGN} ]) matches "k" under /i in C locale');
138 like(":", $single_char_class,
139 '(?[ : ]) matches itself in C locale (a single character class)');
143 # Tests that no warnings given for valid Unicode digit range.
144 my $arabic_digits = qr/(?[ [ ٠ - ٩ ] ])/;
145 for my $char ("٠", "٥", "٩") {
147 my @got = capture_warnings(sub {
148 like("٠", $arabic_digits, "Matches "
149 . charnames::viacode(ord $char));
151 is (@got, 0, "... without warnings");
154 # RT #126181: \cX behaves strangely inside (?[])
156 no warnings qw(syntax regexp);
158 eval { $_ = '/(?[(\c]) /'; qr/$_/ };
159 like($@, qr/^Syntax error/, '/(?[(\c]) / should not panic');
160 eval { $_ = '(?[\c#]' . "\n])"; qr/$_/ };
161 like($@, qr/^Syntax error/, '/(?[(\c]) / should not panic');
162 eval { $_ = '(?[(\c])'; qr/$_/ };
163 like($@, qr/^Syntax error/, '/(?[(\c])/ should be a syntax error');
164 eval { $_ = '(?[(\c]) ]\b'; qr/$_/ };
165 like($@, qr/^Syntax error/, '/(?[(\c]) ]\b/ should be a syntax error');
166 eval { $_ = '(?[\c[]](])'; qr/$_/ };
167 like($@, qr/^Syntax error/, '/(?[\c[]](])/ should be a syntax error');
168 like("\c#", qr/(?[\c#])/, '\c# should match itself');
169 like("\c[", qr/(?[\c[])/, '\c[ should match itself');
170 like("\c\ ", qr/(?[\c\])/, '\c\ should match itself');
171 like("\c]", qr/(?[\c]])/, '\c] should match itself');
174 # RT #126481 !! with syntax error panics
176 fresh_perl_like('no warnings "experimental::regex_sets"; qr/(?[ ! ! (\w])/',
177 qr/^Unmatched \(/, {},
178 'qr/(?[ ! ! (\w])/ doesnt panic');
180 # The following didn't panic before, but easy to add this here with a
181 # paren between the !!
182 fresh_perl_like('no warnings "experimental::regex_sets";qr/(?[ ! ( ! (\w)])/',
183 qr/^Unmatched \(/, {},
184 'qr/qr/(?[ ! ( ! (\w)])/');
188 my $pat = '(?[ ( [ABC] - [B] ) + ( [abc] - [b] ) + [def] ])';
189 like("A", qr/$pat/, "'A' matches /$pat/");
190 unlike("B", qr/$pat/, "'B' doesn't match /$pat/");
191 like("C", qr/$pat/, "'C' matches /$pat/");
192 unlike("D", qr/$pat/, "'D' doesn't match /$pat/");
193 like("a", qr/$pat/, "'a' matches /$pat/");
194 unlike("b", qr/$pat/, "'b' doesn't match /$pat/");
195 like("c", qr/$pat/, "'c' matches /$pat/");
196 like("d", qr/$pat/, "'d' matches /$pat/");
197 like("e", qr/$pat/, "'e' matches /$pat/");
198 like("f", qr/$pat/, "'f' matches /$pat/");
199 unlike("g", qr/$pat/, "'g' doesn't match /$pat/");
202 { # [perl #129322 ] This crashed perl, so keep after the ones that don't
203 my $pat = '(?[[!]&[0]^[!]&[0]+[a]])';
204 like("a", qr/$pat/, "/$pat/ compiles and matches 'a'");