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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 part of dart.core; | 5 part of dart.core; |
6 | 6 |
7 /** | 7 /** |
8 * Error objects thrown in the case of a program failure. | 8 * Error objects thrown in the case of a program failure. |
9 * | 9 * |
10 * An `Error` object represents a program failure that the programmer | 10 * An `Error` object represents a program failure that the programmer |
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89 | 89 |
90 external static String _objectToString(Object object); | 90 external static String _objectToString(Object object); |
91 | 91 |
92 external StackTrace get stackTrace; | 92 external StackTrace get stackTrace; |
93 } | 93 } |
94 | 94 |
95 /** | 95 /** |
96 * Error thrown by the runtime system when an assert statement fails. | 96 * Error thrown by the runtime system when an assert statement fails. |
97 */ | 97 */ |
98 class AssertionError extends Error { | 98 class AssertionError extends Error { |
99 AssertionError(); | |
100 String toString() => "Assertion failed"; | |
101 } | 99 } |
102 | 100 |
103 /** | 101 /** |
104 * Error thrown by the runtime system when a type assertion fails. | 102 * Error thrown by the runtime system when a type assertion fails. |
105 */ | 103 */ |
106 class TypeError extends AssertionError { | 104 class TypeError extends AssertionError { |
107 } | 105 } |
108 | 106 |
109 /** | 107 /** |
110 * Error thrown by the runtime system when a cast operation fails. | 108 * Error thrown by the runtime system when a cast operation fails. |
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565 * the first time it is read. If evaluating the initializer expression causes | 563 * the first time it is read. If evaluating the initializer expression causes |
566 * another read of the variable, this error is thrown. | 564 * another read of the variable, this error is thrown. |
567 */ | 565 */ |
568 class CyclicInitializationError extends Error { | 566 class CyclicInitializationError extends Error { |
569 final String variableName; | 567 final String variableName; |
570 CyclicInitializationError([this.variableName]); | 568 CyclicInitializationError([this.variableName]); |
571 String toString() => variableName == null | 569 String toString() => variableName == null |
572 ? "Reading static variable during its initialization" | 570 ? "Reading static variable during its initialization" |
573 : "Reading static variable '$variableName' during its initialization"; | 571 : "Reading static variable '$variableName' during its initialization"; |
574 } | 572 } |
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