1 // Copyright 2008 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 // Test the (deprecated as of JS 1.5) properties of the RegExp function.
29 var re = /((\d+)\.(\d+))/;
30 var s = 'abc123.456def';
34 assertEquals(s, RegExp.input);
35 assertEquals('123.456', RegExp.lastMatch);
36 assertEquals('456', RegExp.lastParen);
37 assertEquals('abc', RegExp.leftContext);
38 assertEquals('def', RegExp.rightContext);
40 assertEquals(s, RegExp['$_']);
41 assertEquals('123.456', RegExp['$&']);
42 assertEquals('456', RegExp['$+']);
43 assertEquals('abc', RegExp['$`']);
44 assertEquals('def', RegExp["$'"]);
46 assertEquals('123.456', RegExp['$1']);
47 assertEquals('123', RegExp['$2']);
48 assertEquals('456', RegExp['$3']);
49 for (var i = 4; i < 10; ++i) {
50 assertEquals('', RegExp['$' + i]);
53 // They should be read only.
54 RegExp['$1'] = 'fisk';
55 assertEquals('123.456', RegExp['$1']);
57 // String.prototype.match and String.prototype.replace (when given a
58 // regexp) and also RegExp.prototype.test should all behave as if
59 // RegExp.prototype.exec were called.
62 assertEquals(s, RegExp.input);
63 assertEquals('789.012', RegExp.lastMatch);
64 assertEquals('012', RegExp.lastParen);
65 assertEquals('ghi', RegExp.leftContext);
66 assertEquals('jkl', RegExp.rightContext);
67 assertEquals(s, RegExp['$_']);
68 assertEquals('789.012', RegExp['$&']);
69 assertEquals('012', RegExp['$+']);
70 assertEquals('ghi', RegExp['$`']);
71 assertEquals('jkl', RegExp["$'"]);
72 assertEquals('789.012', RegExp['$1']);
73 assertEquals('789', RegExp['$2']);
74 assertEquals('012', RegExp['$3']);
75 for (var i = 4; i < 10; ++i) {
76 assertEquals('', RegExp['$' + i]);
80 s.replace(re, 'whocares');
81 assertEquals(s, RegExp.input);
82 assertEquals('123.456', RegExp.lastMatch);
83 assertEquals('456', RegExp.lastParen);
84 assertEquals('abc', RegExp.leftContext);
85 assertEquals('def', RegExp.rightContext);
86 assertEquals(s, RegExp['$_']);
87 assertEquals('123.456', RegExp['$&']);
88 assertEquals('456', RegExp['$+']);
89 assertEquals('abc', RegExp['$`']);
90 assertEquals('def', RegExp["$'"]);
91 assertEquals('123.456', RegExp['$1']);
92 assertEquals('123', RegExp['$2']);
93 assertEquals('456', RegExp['$3']);
94 for (var i = 4; i < 10; ++i) {
95 assertEquals('', RegExp['$' + i]);
100 assertEquals(s, RegExp.input);
101 assertEquals('789.012', RegExp.lastMatch);
102 assertEquals('012', RegExp.lastParen);
103 assertEquals('ghi', RegExp.leftContext);
104 assertEquals('jkl', RegExp.rightContext);
105 assertEquals(s, RegExp['$_']);
106 assertEquals('789.012', RegExp['$&']);
107 assertEquals('012', RegExp['$+']);
108 assertEquals('ghi', RegExp['$`']);
109 assertEquals('jkl', RegExp["$'"]);
110 assertEquals('789.012', RegExp['$1']);
111 assertEquals('789', RegExp['$2']);
112 assertEquals('012', RegExp['$3']);
113 for (var i = 4; i < 10; ++i) {
114 assertEquals('', RegExp['$' + i]);
117 // String.prototype.replace must interleave matching and replacing when a
118 // global regexp is matched and replaced with the result of a function, in
119 // case the function uses the static properties of the regexp constructor.
121 function f() { return RegExp.$1; };
122 assertEquals('abcd', 'abcd'.replace(re, f));
124 // lastParen where the last parenthesis didn't match.
125 assertEquals(["foo",undefined], /foo(?:a(x))?/.exec("foobx"),
127 assertEquals("", RegExp.lastParen, "lastParen");
129 // The same test for $1 to $9.
130 for (var i = 1; i <= 9; i++) {
131 var haystack = "foo";
132 var re_text = "^foo";
133 for (var j = 0; j < i - 1; j++) {
137 re_text += "(?:a(x))?";
139 var re = new RegExp(re_text);
140 assertTrue(re.test(haystack), "$" + i + " setup");
141 for (var j = 1; j < i - 1; j++) {
142 assertEquals("x", RegExp['$' + j], "$" + j + " in $" + i + " setup");
144 assertEquals("", RegExp['$' + (i)], "$" + i);
147 RegExp.multiline = "foo";
148 assertTrue(typeof RegExp.multiline == typeof Boolean(), "RegExp.multiline coerces values to booleans");
149 RegExp.input = Number();
150 assertTrue(typeof RegExp.input == typeof String(), "RegExp.input coerces values to booleans");
152 // Ensure that we save the correct string as the last subject when
153 // we do a match on a sliced string (the top one not the underlying).
154 var foo = "lsdfj sldkfj sdklfj læsdfjl sdkfjlsdk fjsdl fjsdljskdj flsj flsdkj flskd regexp: /foobar/\nldkfj sdlkfj sdkl";
155 assertTrue(/^([a-z]+): (.*)/.test(foo.substring(foo.indexOf("regexp:"))), "regexp: setup");
156 assertEquals("regexp", RegExp.$1, "RegExp.$1");
159 // Check that calling with no argument is the same as calling with undefined.
160 assertTrue(/^undefined$/.test());
161 assertEquals(["undefined"], /^undefined$/.exec());