1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
var BUGNUMBER = 887016;
var summary = "Trace RegExp.prototype[@@match] behavior.";
print(BUGNUMBER + ": " + summary);
var n;
var log;
var target;
var global;
var unicode;
var logProxy;
var execResult;
var lastIndexResult;
var lastIndexExpected;
function P(A) {
return new Proxy(A, {
get(that, name) {
if (logProxy)
log += "get:result[" + name + "],";
return that[name];
}
});
}
var myRegExp = {
get flags() {
log += "get:flags,";
var flags = "";
if (global) flags += "g";
if (unicode) flags += "u";
return flags;
},
get lastIndex() {
log += "get:lastIndex,";
return lastIndexResult[n];
},
set lastIndex(v) {
log += "set:lastIndex,";
assertEq(v, lastIndexExpected[n]);
},
get exec() {
log += "get:exec,";
return function(S) {
log += "call:exec,";
assertEq(S, target);
return execResult[n++];
};
},
};
function reset() {
n = 0;
log = "";
target = "abcAbcABC";
global = true;
unicode = false;
logProxy = true;
}
// Trace global with non-empty match.
reset();
execResult = [ P(["abc"]), P(["ABC"]), null ];
lastIndexResult = [ , , , ];
lastIndexExpected = [ 0, , , ];
var ret = RegExp.prototype[Symbol.match].call(myRegExp, target);
assertEq(JSON.stringify(ret), `["abc","ABC"]`);
assertEq(log,
"get:flags," +
"set:lastIndex," +
"get:exec,call:exec,get:result[0]," +
"get:exec,call:exec,get:result[0]," +
"get:exec,call:exec,");
// Trace global with empty match.
reset();
execResult = [ P([""]), P([""]), null ];
lastIndexResult = [ , 4, 20, ];
lastIndexExpected = [ 0, 5, 21, ];
ret = RegExp.prototype[Symbol.match].call(myRegExp, target);
assertEq(JSON.stringify(ret), `["",""]`);
assertEq(log,
"get:flags," +
"set:lastIndex," +
"get:exec,call:exec,get:result[0],get:lastIndex,set:lastIndex," +
"get:exec,call:exec,get:result[0],get:lastIndex,set:lastIndex," +
"get:exec,call:exec,");
// Trace global and unicode with empty match.
// 1. not surrogate pair
// 2. lead surrogate pair
// 3. trail surrogate pair
// 4. lead surrogate pair without trail surrogate pair
// 5. index overflow
reset();
unicode = true;
// 0123 4 5678
target = "___\uD83D\uDC38___\uD83D";
execResult = [ P([""]), P([""]), P([""]), P([""]), P([""]), null ];
lastIndexResult = [ , 2, 3, 4, 8, 9, ];
lastIndexExpected = [ 0, 3, 5, 5, 9, 10, ];
ret = RegExp.prototype[Symbol.match].call(myRegExp, target);
assertEq(JSON.stringify(ret), `["","","","",""]`);
assertEq(log,
"get:flags," +
"set:lastIndex," +
"get:exec,call:exec,get:result[0],get:lastIndex,set:lastIndex," +
"get:exec,call:exec,get:result[0],get:lastIndex,set:lastIndex," +
"get:exec,call:exec,get:result[0],get:lastIndex,set:lastIndex," +
"get:exec,call:exec,get:result[0],get:lastIndex,set:lastIndex," +
"get:exec,call:exec,get:result[0],get:lastIndex,set:lastIndex," +
"get:exec,call:exec,");
// Trace global with no match.
reset();
execResult = [ null ];
lastIndexResult = [ , ];
lastIndexExpected = [ 0, ];
ret = RegExp.prototype[Symbol.match].call(myRegExp, target);
assertEq(ret, null);
assertEq(log,
"get:flags," +
"set:lastIndex," +
"get:exec,call:exec,");
// Trace non-global.
reset();
global = false;
execResult = [ P(["abc"]) ];
lastIndexResult = [];
lastIndexExpected = [];
ret = RegExp.prototype[Symbol.match].call(myRegExp, target);
// ret is the Proxy on non-global case, disable logging.
logProxy = false;
assertEq(JSON.stringify(ret), `["abc"]`);
assertEq(log,
"get:flags," +
"get:exec,call:exec,");
if (typeof reportCompare === "function")
reportCompare(true, true);
|
