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 // Flags: --allow-natives-syntax 29 30 /** 31 * @fileoverview Check all sorts of borderline cases for charCodeAt. 32 */ 33 34 function Cons() { 35 return "Te" + "st testing 123"; 36 } 37 38 39 function Deep() { 40 var a = "T"; 41 a += "e"; 42 a += "s"; 43 a += "ting testing 123"; 44 return a; 45 } 46 47 48 function Slice() { 49 return "testing Testing testing 123456789012345".substring(8, 22); 50 } 51 52 53 function Flat() { 54 return "Testing testing 123"; 55 } 56 57 function Cons16() { 58 return "Te" + "\u1234t testing 123"; 59 } 60 61 62 function Deep16() { 63 var a = "T"; 64 a += "e"; 65 a += "\u1234"; 66 a += "ting testing 123"; 67 return a; 68 } 69 70 71 function Slice16Beginning() { 72 return "Te\u1234t testing testing 123".substring(0, 14); 73 } 74 75 76 function Slice16Middle() { 77 return "test Te\u1234t testing testing 123".substring(5, 19); 78 } 79 80 81 function Slice16End() { 82 return "test Te\u1234t".substring(5, 9); 83 } 84 85 86 function Flat16() { 87 return "Te\u1234ting testing 123"; 88 } 89 90 91 function Thing() { 92 } 93 94 95 function NotAString() { 96 var n = new Thing(); 97 n.toString = function() { return "Test"; }; 98 n.charCodeAt = String.prototype.charCodeAt; 99 return n; 100 } 101 102 103 function NotAString16() { 104 var n = new Thing(); 105 n.toString = function() { return "Te\u1234t"; }; 106 n.charCodeAt = String.prototype.charCodeAt; 107 return n; 108 } 109 110 111 function TestStringType(generator, sixteen) { 112 var g = generator; 113 var len = g().toString().length; 114 var t = sixteen ? "t" : "f" 115 t += generator.name; 116 assertTrue(isNaN(g().charCodeAt(-1e19)), 1 + t); 117 assertTrue(isNaN(g().charCodeAt(-0x80000001)), 2 + t); 118 assertTrue(isNaN(g().charCodeAt(-0x80000000)), 3 + t); 119 assertTrue(isNaN(g().charCodeAt(-0x40000000)), 4 + t); 120 assertTrue(isNaN(g().charCodeAt(-1)), 5 + t); 121 assertTrue(isNaN(g().charCodeAt(len)), 6 + t); 122 assertTrue(isNaN(g().charCodeAt(len + 1)), 7 + t); 123 assertTrue(isNaN(g().charCodeAt(0x3fffffff)), 8 + t); 124 assertTrue(isNaN(g().charCodeAt(0x7fffffff)), 9 + t); 125 assertTrue(isNaN(g().charCodeAt(0x80000000)), 10 + t); 126 assertTrue(isNaN(g().charCodeAt(1e9)), 11 + t); 127 assertEquals(84, g().charCodeAt(0), 12 + t); 128 assertEquals(84, g().charCodeAt("test"), 13 + t); 129 assertEquals(84, g().charCodeAt(""), 14 + t); 130 assertEquals(84, g().charCodeAt(null), 15 + t); 131 assertEquals(84, g().charCodeAt(undefined), 16 + t); 132 assertEquals(84, g().charCodeAt(), 17 + t); 133 assertEquals(84, g().charCodeAt(void 0), 18 + t); 134 assertEquals(84, g().charCodeAt(false), 19 + t); 135 assertEquals(101, g().charCodeAt(true), 20 + t); 136 assertEquals(101, g().charCodeAt(1), 21 + t); 137 assertEquals(sixteen ? 0x1234 : 115, g().charCodeAt(2), 22 + t); 138 assertEquals(116, g().charCodeAt(3), 23 + t); 139 assertEquals(101, g().charCodeAt(1.1), 24 + t); 140 assertEquals(sixteen ? 0x1234 : 115, g().charCodeAt(2.1718), 25 + t); 141 assertEquals(116, g().charCodeAt(3.14159), 26 + t); 142 } 143 144 145 TestStringType(Cons, false); 146 TestStringType(Deep, false); 147 TestStringType(Slice, false); 148 TestStringType(Flat, false); 149 TestStringType(NotAString, false); 150 TestStringType(Cons16, true); 151 TestStringType(Deep16, true); 152 TestStringType(Slice16Beginning, true); 153 TestStringType(Slice16Middle, true); 154 TestStringType(Slice16End, true); 155 TestStringType(Flat16, true); 156 TestStringType(NotAString16, true); 157 158 159 function ConsNotSmiIndex() { 160 var str = Cons(); 161 assertTrue(isNaN(str.charCodeAt(0x7fffffff))); 162 } 163 164 for (var i = 0; i < 5; i++) { 165 ConsNotSmiIndex(); 166 } 167 %OptimizeFunctionOnNextCall(ConsNotSmiIndex); 168 ConsNotSmiIndex(); 169 170 171 for (var i = 0; i != 10; i++) { 172 assertEquals(101, Cons16().charCodeAt(1.1)); 173 assertEquals('e', Cons16().charAt(1.1)); 174 } 175 176 function StupidThing() { 177 // Doesn't return a string from toString! 178 this.toString = function() { return 42; } 179 this.charCodeAt = String.prototype.charCodeAt; 180 } 181 182 assertEquals(52, new StupidThing().charCodeAt(0), 27); 183 assertEquals(50, new StupidThing().charCodeAt(1), 28); 184 assertTrue(isNaN(new StupidThing().charCodeAt(2)), 29); 185 assertTrue(isNaN(new StupidThing().charCodeAt(-1)), 30); 186 187 188 // Medium (>255) and long (>65535) strings. 189 190 var medium = "12345678"; 191 medium += medium; // 16. 192 medium += medium; // 32. 193 medium += medium; // 64. 194 medium += medium; // 128. 195 medium += medium; // 256. 196 197 var long = medium; 198 long += long + long + long; // 1024. 199 long += long + long + long; // 4096. 200 long += long + long + long; // 16384. 201 long += long + long + long; // 65536. 202 203 assertTrue(isNaN(medium.charCodeAt(-1)), 31); 204 assertEquals(49, medium.charCodeAt(0), 32); 205 assertEquals(56, medium.charCodeAt(255), 33); 206 assertTrue(isNaN(medium.charCodeAt(256)), 34); 207 208 assertTrue(isNaN(long.charCodeAt(-1)), 35); 209 assertEquals(49, long.charCodeAt(0), 36); 210 assertEquals(56, long.charCodeAt(65535), 37); 211 assertTrue(isNaN(long.charCodeAt(65536)), 38); 212 213 214 // Test crankshaft code when the function is set directly on the 215 // string prototype object instead of the hidden prototype object. 216 // See http://code.google.com/p/v8/issues/detail?id=1070 217 218 String.prototype.x = String.prototype.charCodeAt; 219 220 function directlyOnPrototype() { 221 assertEquals(97, "a".x(0)); 222 assertEquals(98, "b".x(0)); 223 assertEquals(99, "c".x(0)); 224 assertEquals(97, "a".x(0)); 225 assertEquals(98, "b".x(0)); 226 assertEquals(99, "c".x(0)); 227 } 228 229 for (var i = 0; i < 5; i++) { 230 directlyOnPrototype(); 231 } 232 %OptimizeFunctionOnNextCall(directlyOnPrototype); 233 directlyOnPrototype(); 234 235 assertTrue(isNaN(%_StringCharCodeAt("ABC", -1))); 236 assertTrue(isNaN(%_StringCharCodeAt("ABC", 4))); 237
