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Issue 1608693003: [regexp] step back if starting unicode regexp within surrogate pair. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@unicodeclass
Patch Set: fix 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 var r = /./ug;
8 assertEquals(["\ud800\udc00"], r.exec("\ud800\udc00\ud801\udc01"));
9 assertEquals(2, r.lastIndex);
10 r.lastIndex = 1;
11 assertEquals(["\ud800\udc00"], r.exec("\ud800\udc00\ud801\udc01"));
12 assertEquals(2, r.lastIndex);
13 assertEquals(["\ud801\udc01"], r.exec("\ud800\udc00\ud801\udc01"));
14 r.lastIndex = 3;
15 assertEquals(["\ud801\udc01"], r.exec("\ud800\udc00\ud801\udc01"));
16 assertEquals(4, r.lastIndex);
17 r.lastIndex = 4;
18 assertNull(r.exec("\ud800\udc00\ud801\udc01"));
19 assertEquals(0, r.lastIndex);
20 r.lastIndex = 5;
21 assertNull(r.exec("\ud800\udc00\ud801\udc01"));
22 assertEquals(0, r.lastIndex);
23
24 r.lastIndex = 3;
25 assertEquals(["\ud802"], r.exec("\ud800\udc00\ud801\ud802"));
26 r.lastIndex = 4;
27 assertNull(r.exec("\ud800\udc00\ud801\ud802"));
28
29 r = /./g;
30 assertEquals(["\ud800"], r.exec("\ud800\udc00\ud801\udc01"));
31 assertEquals(1, r.lastIndex);
32 assertEquals(["\udc00"], r.exec("\ud800\udc00\ud801\udc01"));
33 assertEquals(2, r.lastIndex);
34 assertEquals(["\ud801"], r.exec("\ud800\udc00\ud801\udc01"));
35 assertEquals(3, r.lastIndex);
36 assertEquals(["\udc01"], r.exec("\ud800\udc00\ud801\udc01"));
37 assertEquals(4, r.lastIndex);
38 assertNull(r.exec("\ud800\udc00\ud801\udc01"));
39 assertEquals(0, r.lastIndex);
40 r.lastIndex = 1;
41 assertEquals(["\udc00"], r.exec("\ud800\udc00\ud801\udc01"));
42 assertEquals(2, r.lastIndex);
43
44 // ------------------------
45
46 r = /^./ug;
47 assertEquals(["\ud800\udc00"], r.exec("\ud800\udc00\ud801\udc01"));
48 assertEquals(2, r.lastIndex);
49 r.lastIndex = 1;
50 assertEquals(["\ud800\udc00"], r.exec("\ud800\udc00\ud801\udc01"));
51 assertEquals(2, r.lastIndex);
52 assertNull(r.exec("\ud800\udc00\ud801\udc01"));
53 assertEquals(0, r.lastIndex);
54 r.lastIndex = 3;
55 assertNull(r.exec("\ud800\udc00\ud801\udc01"));
56 assertEquals(0, r.lastIndex);
57 r.lastIndex = 4;
58 assertNull(r.exec("\ud800\udc00\ud801\udc01"));
59 assertEquals(0, r.lastIndex);
60 r.lastIndex = 5;
61 assertNull(r.exec("\ud800\udc00\ud801\udc01"));
62 assertEquals(0, r.lastIndex);
63
64 r = /^./g;
65 assertEquals(["\ud800"], r.exec("\ud800\udc00\ud801\udc01"));
66 assertEquals(1, r.lastIndex);
67 assertNull(r.exec("\ud800\udc00\ud801\udc01"));
68 assertEquals(0, r.lastIndex);
69 r.lastIndex = 3;
70 assertNull(r.exec("\ud800\udc00\ud801\udc01"));
71 assertEquals(0, r.lastIndex);
72
73 //------------------------
74
75 r = /(?:(^.)|.)/ug;
76 assertEquals(["\ud800\udc00", "\ud800\udc00"],
77 r.exec("\ud800\udc00\ud801\udc01"));
78 assertEquals(2, r.lastIndex);
79 r.lastIndex = 1;
80 assertEquals(["\ud800\udc00", "\ud800\udc00"],
81 r.exec("\ud800\udc00\ud801\udc01"));
82 assertEquals(2, r.lastIndex);
83 assertEquals(["\ud801\udc01", undefined], r.exec("\ud800\udc00\ud801\udc01"));
84 r.lastIndex = 3;
85 assertEquals(["\ud801\udc01", undefined], r.exec("\ud800\udc00\ud801\udc01"));
86 r.lastIndex = 4;
87 assertNull(r.exec("\ud800\udc00\ud801\udc01"));
88 r.lastIndex = 5;
89 assertNull(r.exec("\ud800\udc00\ud801\udc01"));
90
91 r.lastIndex = 3;
92 assertEquals(["\ud802", undefined], r.exec("\ud800\udc00\ud801\ud802"));
93 r.lastIndex = 4;
94 assertNull(r.exec("\ud800\udc00\ud801\ud802"));
95
96 r = /(?:(^.)|.)/g;
97 assertEquals(["\ud800", "\ud800"],
98 r.exec("\ud800\udc00\ud801\udc01"));
99 assertEquals(1, r.lastIndex);
100 assertEquals(["\udc00", undefined], r.exec("\ud800\udc00\ud801\udc01"));
101 assertEquals(2, r.lastIndex);
102 r.lastIndex = 3;
103 assertEquals(["\udc01", undefined], r.exec("\ud800\udc00\ud801\udc01"));
104 assertEquals(4, r.lastIndex);
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