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Issue 1578253005: [regexp] implement character classes for unicode regexps. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: rebase Created 4 years, 11 months ago
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1 // Copyright 2016 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Flags: --harmony-unicode-regexps --harmony-regexp-lookbehind
6
7 function execl(expectation, regexp, subject) {
8 if (regexp instanceof String) regexp = new RegExp(regexp, "u");
9 assertEquals(expectation, regexp.exec(subject));
10 }
11
12 function execs(expectation, regexp_source, subject) {
13 execl(expectation, new RegExp(regexp_source, "u"), subject);
14 }
15
16 // Character ranges.
17 execl(["A"], /[A-D]/u, "A");
18 execs(["A"], "[A-D]", "A");
19 execl(["ABCD"], /[A-D]+/u, "ZABCDEF");
20 execs(["ABCD"], "[A-D]+", "ZABCDEF");
21
22 execl(["\u{12345}"], /[\u1234-\u{12345}]/u, "\u{12345}");
23 execs(["\u{12345}"], "[\u1234-\u{12345}]", "\u{12345}");
24 execl(null, /[^\u1234-\u{12345}]/u, "\u{12345}");
25 execs(null, "[^\u1234-\u{12345}]", "\u{12345}");
26
27 execl(["\u{1234}"], /[\u1234-\u{12345}]/u, "\u{1234}");
28 execs(["\u{1234}"], "[\u1234-\u{12345}]", "\u{1234}");
29 execl(null, /[^\u1234-\u{12345}]/u, "\u{1234}");
30 execs(null, "[^\u1234-\u{12345}]", "\u{1234}");
31
32 execl(null, /[\u1234-\u{12345}]/u, "\u{1233}");
33 execs(null, "[\u1234-\u{12345}]", "\u{1233}");
34 execl(["\u{1233}"], /[^\u1234-\u{12345}]/u, "\u{1233}");
35 execs(["\u{1233}"], "[^\u1234-\u{12345}]", "\u{1233}");
36
37 execl(["\u{12346}"], /[^\u1234-\u{12345}]/u, "\u{12346}");
38 execs(["\u{12346}"], "[^\u1234-\u{12345}]", "\u{12346}");
39 execl(null, /[\u1234-\u{12345}]/u, "\u{12346}");
40 execs(null, "[\u1234-\u{12345}]", "\u{12346}");
41
42 execl(["\u{12342}"], /[\u{12340}-\u{12345}]/u, "\u{12342}");
43 execs(["\u{12342}"], "[\u{12340}-\u{12345}]", "\u{12342}");
44 execl(null, /[^\u{12340}-\u{12345}]/u, "\u{12342}");
45 execs(null, "[^\u{12340}-\u{12345}]", "\u{12342}");
mathias 2016/01/21 12:44:36 To test the equivalent regular expression using su
46
47 execl(["\u{ffff}"], /[\u{ff80}-\u{12345}]/u, "\u{ffff}");
48 execs(["\u{ffff}"], "[\u{ff80}-\u{12345}]", "\u{ffff}");
49 execl(null, /[^\u{ff80}-\u{12345}]/u, "\u{ffff}");
50 execs(null, "[^\u{ff80}-\u{12345}]", "\u{ffff}");
mathias 2016/01/21 12:44:36 Same here: execl(["\u{ffff}"], /[\u{ff80}-\u{1234
51
52 // Lone surrogate
53 execl(["\ud800"], /[^\u{ff80}-\u{12345}]/u, "\uff99\u{d800}A");
54 execs(["\udc00"], "[^\u{ff80}-\u{12345}]", "\uff99\u{dc00}A");
55 execl(["\udc01"], /[\u0100-\u{10ffff}]/u, "A\udc01");
56 execl(["\udc03"], /[\udc01-\udc03]/u, "\ud801\udc02\udc03");
57 execl(["\ud801"], /[\ud801-\ud803]/u, "\ud802\udc01\ud801");
58
59 // Paired sorrogate.
60 execl(null, /[^\u{ff80}-\u{12345}]/u, "\u{d800}\u{dc00}");
61 execs(null, "[^\u{ff80}-\u{12345}]", "\u{d800}\u{dc00}");
62 execl(["\ud800\udc00"], /[\u{ff80}-\u{12345}]/u, "\u{d800}\u{dc00}");
63 execs(["\ud800\udc00"], "[\u{ff80}-\u{12345}]", "\u{d800}\u{dc00}");
64 execl(["foo\u{10e6d}bar"], /foo\ud803\ude6dbar/u, "foo\u{10e6d}bar");
65
66 // Lone surrogates
67 execl(["\ud801\ud801"], /\ud801+/u, "\ud801\udc01\ud801\ud801");
68 execl(["\udc01\udc01"], /\udc01+/u, "\ud801\ud801\udc01\udc01\udc01");
69
70 execl(["\udc02\udc03A"], /\W\WA/u, "\ud801\udc01A\udc02\udc03A");
71 execl(["\ud801\ud802"], /\ud801./u, "\ud801\udc01\ud801\ud802");
72 execl(["\udc02\udc03A"], /[\ud800-\udfff][\ud800-\udfff]A/u,
73 "\ud801\udc01A\udc02\udc03A");
74
75 // Character classes
76 execl(null, /\w/u, "\ud801\udc01");
77 execl(["\ud801"], /[^\w]/, "\ud801\udc01");
78 execl(["\ud801\udc01"], /[^\w]/u, "\ud801\udc01");
79 execl(["\ud801"], /\W/, "\ud801\udc01");
80 execl(["\ud801\udc01"], /\W/u, "\ud801\udc01");
81
82 execl(["\ud800X"], /.X/u, "\ud800XaX");
83 execl(["aX"], /.(?<!\ud800)X/u, "\ud800XaX");
84 execl(["aX"], /.(?<![\ud800-\ud900])X/u, "\ud800XaX");
85
86 execl(null, /[]/u, "\u1234");
87 execl(["0abc"], /[^]abc/u, "0abc");
88 execl(["\u1234abc"], /[^]abc/u, "\u1234abc");
89 execl(["\u{12345}abc"], /[^]abc/u, "\u{12345}abc");
90
91 // Backward matches of lone surrogates.
92 execl(["B", "\ud803A"], /(?<=([\ud800-\ud900]A))B/u,
93 "\ud801\udc00AB\udc00AB\ud802\ud803AB");
94 execl(["B", "\udc00A"], /(?<=([\ud800-\u{10300}]A))B/u,
95 "\ud801\udc00AB\udc00AB\ud802\ud803AB");
96 execl(["B", "\udc11A"], /(?<=([\udc00-\udd00]A))B/u,
97 "\ud801\udc00AB\udc11AB\ud802\ud803AB");
98 execl(["X", "\ud800C"], /(?<=(\ud800\w))X/u,
99 "\ud800\udc00AX\udc11BX\ud800\ud800CX");
100 execl(["C", "\ud800\ud800"], /(?<=(\ud800.))\w/u,
101 "\ud800\udc00AX\udc11BX\ud800\ud800CX");
102 execl(["X", "\udc01C"], /(?<=(\udc01\w))X/u,
103 "\ud800\udc01AX\udc11BX\udc01\udc01CX");
104 execl(["C", "\udc01\udc01"], /(?<=(\udc01.))./u,
105 "\ud800\udc01AX\udc11BX\udc01\udc01CX");
106
107
108 var L = "\ud800";
109 var T = "\udc00";
110 var X = "X";
111
112 // Test string contains only match.
113 function testw(expect, src, subject) {
114 var re = new RegExp("^" + src + "$", "u");
115 assertEquals(expect, re.test(subject));
116 }
117
118 // Test string starts with match.
119 function tests(expect, src, subject) {
120 var re = new RegExp("^" + src, "u");
121 assertEquals(expect, re.test(subject));
122 }
123
124 testw(true, X, X);
125 testw(true, L, L);
126 testw(true, T, T);
127 testw(true, L + T, L + T);
128 testw(true, T + L, T + L);
129 testw(false, T, L + T);
130 testw(false, L, L + T);
131 testw(true, ".(?<=" + L + ")", L);
132 testw(true, ".(?<=" + T + ")", T);
133 testw(true, ".(?<=" + L + T + ")", L + T);
134 testw(true, ".(?<=" + L + T + ")", L + T);
135 tests(true, ".(?<=" + T + ")", T + L);
136 tests(false, ".(?<=" + L + ")", L + T);
137 tests(false, ".(?<=" + T + ")", L + T);
138 tests(true, "..(?<=" + T + ")", T + T + L);
139 tests(true, "..(?<=" + T + ")", X + T + L);
140 tests(true, "...(?<=" + L + ")", X + T + L);
141 tests(false, "...(?<=" + T + ")", X + L + T)
142 tests(true, "..(?<=" + L + T + ")", X + L + T)
143 tests(true, "..(?<=" + L + T + "(?<=" + L + T + "))", X + L + T);
144 tests(false, "..(?<=" + L + "(" + T + "))", X + L + T);
145 tests(false, ".*" + L, X + L + T);
146 tests(true, ".*" + L, X + L + L + T);
147 tests(false, ".*" + L, X + L + T + L + T);
148 tests(false, ".*" + T, X + L + T + L + T);
149 tests(true, ".*" + T, X + L + T + T + L + T);
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