| // 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 A numeric literal is either a decimal or hexadecimal integer of |
| /// arbitrary size, or a decimal double. |
| /// |
| /// numericLiteral: |
| /// NUMBER| |
| /// HEX_NUMBER |
| ///; |
| /// NUMBER: |
| /// DIGIT+ ('.' DIGIT+)? EXPONENT? | |
| /// '.' DIGIT+ EXPONENT? |
| /// ; |
| /// EXPONENT: |
| /// ('e' | 'E') ('+' | '-')? DIGIT+ |
| /// ; |
| /// HEX NUMBER: |
| /// '0x' HEX DIGIT+ | |
| /// '0X' HEX DIGIT+ |
| /// ; |
| /// HEX DIGIT: |
| /// 'a'..'f' | |
| /// 'A'..'F' | |
| /// DIGIT |
| /// ; |
| /// @description Checks different decimal numeric literals with exponent and |
| /// decimal point. |
| /// @author hlodvig |
| |
| import '../../../Utils/expect.dart'; |
| |
| void check(i, [expected = null]) { |
| Expect.isTrue(i is num); |
| Expect.equals(expected, i); |
| } |
| |
| main() { |
| check(0.0e+1, 0); |
| check(-1.0e+1, -10); |
| check(2.0E1, 20); |
| check(-3.0e+1, -30); |
| check(4.0e1, 40); |
| check(-5.0e+1, -50); |
| check(6.0e1, 60); |
| check(-7.0E+1, -70); |
| check(8.0e1, 80); |
| check(-9.0e+1, -90); |
| check(0.0e-1, 0.0); |
| check(-1.0e-1, -0.1); |
| check(2.0e-1, 0.2); |
| check(-3.0e-1, -0.3); |
| check(4.0E-1, 0.4); |
| check(-5.0e-1, -0.5); |
| check(6.0e-1, 0.6); |
| check(-7.0E-1, -0.7); |
| check(-8.0e-1, -0.8); |
| check(9.0e-1, 0.9); |
| check(-.0e1, -0); |
| check(.1e+1, 1); |
| check(-.2e1, -2); |
| check(.3E+1, 3); |
| check(-.4e1, -4); |
| check(.5e+1, 5); |
| check(-.6E1, -6); |
| check(.7e+1, 7); |
| check(-.8e1, -8); |
| check(.9e+1, 9); |
| check(-.000000000000000000000000124614151241245e-00000124612525124124, -124614.151241245e-124612525124130); |
| check(000002452350.032523500235235E+0012042014012051205, 24.52350032523500235235e12042014012051200); |
| } |