| // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| /** |
| * @assertion 15.10.2.11: The production DecimalEscape :: DecimalIntegerLiteral |
| * [lookahead not in DecimalDigit] evaluates as follows: |
| * <ol> |
| * <li>Let i be the MV of DecimalIntegerLiteral.</li> |
| * <li>If i is zero, return the EscapeValue consisting of a <NUL> character |
| * (Unicode value 0000).</li> |
| * <li>Return the EscapeValue consisting of the integer i. </li> |
| * </ol> |
| * NOTE: If \ is followed by a decimal number n whose first digit is not 0, |
| * then the escape sequence is considered to be a backreference. It is an error |
| * if n is greater than the total number of left capturing parentheses in the |
| * entire regular expression. \0 represents the NUL character and cannot be |
| * followed by a decimal digit. |
| * @description Checks that \0 indeed evaluates to the NUL character. |
| * @3rdparty sputnik-v1:S15.10.2.11_A1_T1.js |
| * @author rodionov |
| */ |
| import "../../../../Utils/expect.dart"; |
| |
| main() { |
| RegExp re = new RegExp(r"\0"); |
| Expect.isTrue(null != re.firstMatch("\u0000")); |
| } |
