rossberg@chromium.org | 28a3708 | 2011-08-22 11:03:23 +0000 | [diff] [blame^] | 1 | // Copyright 2011 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 | // Don't allow malformed unicode escape sequences in identifiers. |
| 29 | // In strings and regexps we currently allow malformed unicode escape |
| 30 | // sequences without throwing a SyntaxError. Instead "\u22gk" would |
| 31 | // treat the "\u" as an identity escape, and evaluate to "u22gk". |
| 32 | // Due to code sharing, we did the same in identifiers. This should |
| 33 | // no longer be the case. |
| 34 | // See: http://code.google.com/p/v8/issues/detail?id=1620 |
| 35 | |
| 36 | assertThrows("var \\u\\u\\u = 42;"); |
| 37 | assertThrows("var \\u41 = 42;"); |
| 38 | assertThrows("var \\u123 = 42;"); |
| 39 | eval("var \\u1234 = 42;"); |
| 40 | assertEquals(42, eval("\u1234")); |
| 41 | assertThrows("var uuu = 42; var x = \\u\\u\\u"); |
| 42 | |
| 43 | // Regressions introduced and fixed again while fixing the above. |
| 44 | |
| 45 | // Handle 0xFFFD correctly (it's a valid value, and shouldn't be used |
| 46 | // to mark an error). |
| 47 | assertEquals(0xFFFD, "\uFFFD".charCodeAt(0)); |
| 48 | |
| 49 | // Handle unicode escapes in regexp flags correctly. |
| 50 | assertThrows("/x/g\\uim", SyntaxError); |
| 51 | assertThrows("/x/g\\u2im", SyntaxError); |
| 52 | assertThrows("/x/g\\u22im", SyntaxError); |
| 53 | assertThrows("/x/g\\u222im", SyntaxError); |
| 54 | assertThrows("/x/g\\\\u2222im", SyntaxError); |