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 4 // met: 5 // 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. 15 // 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. 27 28 // Test that we throw exceptions when calling test and exec with no 29 // input. This is not part of the spec, but we do it for 30 // compatibility with JSC. 31 assertThrows("/a/.test()"); 32 assertThrows("/a/.exec()"); 33 34 // Test that we do not throw exceptions once the static RegExp.input 35 // field has been set. 36 RegExp.input = "a"; 37 assertDoesNotThrow("/a/.test()"); 38 assertDoesNotThrow("/a/.exec()"); 39 40 // Test the (deprecated as of JS 1.5) properties of the RegExp function. 41 var re = /((\d+)\.(\d+))/; 42 var s = 'abc123.456def'; 43 44 re.exec(s); 45 46 assertEquals(s, RegExp.input); 47 assertEquals('123.456', RegExp.lastMatch); 48 assertEquals('456', RegExp.lastParen); 49 assertEquals('abc', RegExp.leftContext); 50 assertEquals('def', RegExp.rightContext); 51 52 assertEquals(s, RegExp['$_']); 53 assertEquals('123.456', RegExp['$&']); 54 assertEquals('456', RegExp['$+']); 55 assertEquals('abc', RegExp['$`']); 56 assertEquals('def', RegExp["$'"]); 57 58 assertEquals('123.456', RegExp['$1']); 59 assertEquals('123', RegExp['$2']); 60 assertEquals('456', RegExp['$3']); 61 for (var i = 4; i < 10; ++i) { 62 assertEquals('', RegExp['$' + i]); 63 } 64 65 // They should be read only. 66 RegExp['$1'] = 'fisk'; 67 assertEquals('123.456', RegExp['$1']); 68 69 // String.prototype.match and String.prototype.replace (when given a 70 // regexp) and also RegExp.prototype.test should all behave as if 71 // RegExp.prototype.exec were called. 72 s = 'ghi789.012jkl'; 73 s.match(re); 74 assertEquals(s, RegExp.input); 75 assertEquals('789.012', RegExp.lastMatch); 76 assertEquals('012', RegExp.lastParen); 77 assertEquals('ghi', RegExp.leftContext); 78 assertEquals('jkl', RegExp.rightContext); 79 assertEquals(s, RegExp['$_']); 80 assertEquals('789.012', RegExp['$&']); 81 assertEquals('012', RegExp['$+']); 82 assertEquals('ghi', RegExp['$`']); 83 assertEquals('jkl', RegExp["$'"]); 84 assertEquals('789.012', RegExp['$1']); 85 assertEquals('789', RegExp['$2']); 86 assertEquals('012', RegExp['$3']); 87 for (var i = 4; i < 10; ++i) { 88 assertEquals('', RegExp['$' + i]); 89 } 90 91 s = 'abc123.456def'; 92 s.replace(re, 'whocares'); 93 assertEquals(s, RegExp.input); 94 assertEquals('123.456', RegExp.lastMatch); 95 assertEquals('456', RegExp.lastParen); 96 assertEquals('abc', RegExp.leftContext); 97 assertEquals('def', RegExp.rightContext); 98 assertEquals(s, RegExp['$_']); 99 assertEquals('123.456', RegExp['$&']); 100 assertEquals('456', RegExp['$+']); 101 assertEquals('abc', RegExp['$`']); 102 assertEquals('def', RegExp["$'"]); 103 assertEquals('123.456', RegExp['$1']); 104 assertEquals('123', RegExp['$2']); 105 assertEquals('456', RegExp['$3']); 106 for (var i = 4; i < 10; ++i) { 107 assertEquals('', RegExp['$' + i]); 108 } 109 110 s = 'ghi789.012jkl'; 111 re.test(s); 112 assertEquals(s, RegExp.input); 113 assertEquals('789.012', RegExp.lastMatch); 114 assertEquals('012', RegExp.lastParen); 115 assertEquals('ghi', RegExp.leftContext); 116 assertEquals('jkl', RegExp.rightContext); 117 assertEquals(s, RegExp['$_']); 118 assertEquals('789.012', RegExp['$&']); 119 assertEquals('012', RegExp['$+']); 120 assertEquals('ghi', RegExp['$`']); 121 assertEquals('jkl', RegExp["$'"]); 122 assertEquals('789.012', RegExp['$1']); 123 assertEquals('789', RegExp['$2']); 124 assertEquals('012', RegExp['$3']); 125 for (var i = 4; i < 10; ++i) { 126 assertEquals('', RegExp['$' + i]); 127 } 128 129 // String.prototype.replace must interleave matching and replacing when a 130 // global regexp is matched and replaced with the result of a function, in 131 // case the function uses the static properties of the regexp constructor. 132 re = /(.)/g; 133 function f() { return RegExp.$1; }; 134 assertEquals('abcd', 'abcd'.replace(re, f)); 135 136 // lastParen where the last parenthesis didn't match. 137 assertEquals("foo,", /foo(?:a(x))?/.exec("foobx"), "lastParen setup"); 138 assertEquals("", RegExp.lastParen, "lastParen"); 139 140 // The same test for $1 to $9. 141 for (var i = 1; i <= 9; i++) { 142 var haystack = "foo"; 143 var re_text = "^foo"; 144 for (var j = 0; j < i - 1; j++) { 145 haystack += "x"; 146 re_text += "(x)"; 147 } 148 re_text += "(?:a(x))?"; 149 haystack += "bx"; 150 var re = new RegExp(re_text); 151 assertTrue(re.test(haystack), "$" + i + " setup"); 152 for (var j = 1; j < i - 1; j++) { 153 assertEquals("x", RegExp['$' + j], "$" + j + " in $" + i + " setup"); 154 } 155 assertEquals("", RegExp['$' + (i)], "$" + i); 156 } 157 158 RegExp.multiline = "foo"; 159 assertTrue(typeof RegExp.multiline == typeof Boolean(), "RegExp.multiline coerces values to booleans"); 160 RegExp.input = Number(); 161 assertTrue(typeof RegExp.input == typeof String(), "RegExp.input coerces values to booleans"); 162 163 // Ensure that we save the correct string as the last subject when 164 // we do a match on a sliced string (the top one not the underlying). 165 var foo = "lsdfj sldkfj sdklfj lsdfjl sdkfjlsdk fjsdl fjsdljskdj flsj flsdkj flskd regexp: /foobar/\nldkfj sdlkfj sdkl"; 166 assertTrue(/^([a-z]+): (.*)/.test(foo.substring(foo.indexOf("regexp:"))), "regexp: setup"); 167 assertEquals("regexp", RegExp.$1, "RegExp.$1"); 168
