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1 // Copyright 2013 Google Inc. All Rights Reserved. | 1 // Copyright 2013 Google Inc. All Rights Reserved. |
2 // | 2 // |
3 // Licensed under the Apache License, Version 2.0 (the "License"); | 3 // Licensed under the Apache License, Version 2.0 (the "License"); |
4 // you may not use this file except in compliance with the License. | 4 // you may not use this file except in compliance with the License. |
5 // You may obtain a copy of the License at | 5 // You may obtain a copy of the License at |
6 // | 6 // |
7 // http://www.apache.org/licenses/LICENSE-2.0 | 7 // http://www.apache.org/licenses/LICENSE-2.0 |
8 // | 8 // |
9 // Unless required by applicable law or agreed to in writing, software | 9 // Unless required by applicable law or agreed to in writing, software |
10 // distributed under the License is distributed on an "AS IS" BASIS, | 10 // distributed under the License is distributed on an "AS IS" BASIS, |
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
12 // See the License for the specific language governing permissions and | 12 // See the License for the specific language governing permissions and |
13 // limitations under the License. | 13 // limitations under the License. |
14 | 14 |
15 part of quiver.testing.runtime; | 15 part of quiver.testing.runtime; |
16 | 16 |
17 /** | 17 /// Asserts that the current runtime has checked mode enabled. |
18 * Asserts that the current runtime has checked mode enabled. | 18 /// |
19 * | 19 /// Otherwise, throws [StateError]. |
20 * Otherwise, throws [StateError]. | |
21 */ | |
22 void assertCheckedMode() { | 20 void assertCheckedMode() { |
23 if (_isCheckedMode == null) _isCheckedMode = _checkForCheckedMode(); | 21 if (_isCheckedMode == null) _isCheckedMode = _checkForCheckedMode(); |
24 | 22 |
25 if (!_isCheckedMode) { | 23 if (!_isCheckedMode) { |
26 throw new StateError('Not in checked mode.'); | 24 throw new StateError('Not in checked mode.'); |
27 } | 25 } |
28 } | 26 } |
29 | 27 |
30 bool _isCheckedMode = null; | 28 bool _isCheckedMode = null; |
31 | 29 |
32 bool _checkForCheckedMode() { | 30 bool _checkForCheckedMode() { |
33 Object sentinal = new Object(); | 31 Object sentinal = new Object(); |
34 try { | 32 try { |
35 var i = 1 as dynamic; | 33 var i = 1 as dynamic; |
36 String string = i; | 34 _takeString(i); |
37 throw sentinal; | 35 throw sentinal; |
38 } catch (e) { | 36 } catch (e) { |
39 if (e == sentinal) return false; | 37 if (e == sentinal) return false; |
40 } | 38 } |
41 return true; | 39 return true; |
42 } | 40 } |
| 41 |
| 42 void _takeString(String value) {} |
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