| // Copyright 2011 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // Don't allow malformed unicode escape sequences in identifiers. |
| // In strings and regexps we currently allow malformed unicode escape |
| // sequences without throwing a SyntaxError. Instead "\u22gk" would |
| // treat the "\u" as an identity escape, and evaluate to "u22gk". |
| // Due to code sharing, we did the same in identifiers. This should |
| // no longer be the case. |
| // See: http://code.google.com/p/v8/issues/detail?id=1620 |
| |
| assertThrows("var \\u\\u\\u = 42;"); |
| assertThrows("var \\u41 = 42;"); |
| assertThrows("var \\u123 = 42;"); |
| eval("var \\u1234 = 42;"); |
| assertEquals(42, eval("\u1234")); |
| assertThrows("var uuu = 42; var x = \\u\\u\\u"); |
| |
| // Regressions introduced and fixed again while fixing the above. |
| |
| // Handle 0xFFFD correctly (it's a valid value, and shouldn't be used |
| // to mark an error). |
| assertEquals(0xFFFD, "\uFFFD".charCodeAt(0)); |
| |
| // Handle unicode escapes in regexp flags correctly. |
| assertThrows("/x/g\\uim", SyntaxError); |
| assertThrows("/x/g\\u2im", SyntaxError); |
| assertThrows("/x/g\\u22im", SyntaxError); |
| assertThrows("/x/g\\u222im", SyntaxError); |
| assertThrows("/x/g\\\\u2222im", SyntaxError); |
