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Side by Side Diff: sdk/lib/core/errors.dart

Issue 1325843003: Add optional message to assert in Dart2js. (Closed) Base URL: https://github.com/dart-lang/sdk.git@master
Patch Set: Reintroduce assertHelper for asserts without messages. Created 5 years, 3 months ago
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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";
99 } 101 }
100 102
101 /** 103 /**
102 * Error thrown by the runtime system when a type assertion fails. 104 * Error thrown by the runtime system when a type assertion fails.
103 */ 105 */
104 class TypeError extends AssertionError { 106 class TypeError extends AssertionError {
105 } 107 }
106 108
107 /** 109 /**
108 * Error thrown by the runtime system when a cast operation fails. 110 * Error thrown by the runtime system when a cast operation fails.
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562 * the first time it is read. If evaluating the initializer expression causes 564 * the first time it is read. If evaluating the initializer expression causes
563 * another read of the variable, this error is thrown. 565 * another read of the variable, this error is thrown.
564 */ 566 */
565 class CyclicInitializationError extends Error { 567 class CyclicInitializationError extends Error {
566 final String variableName; 568 final String variableName;
567 CyclicInitializationError([this.variableName]); 569 CyclicInitializationError([this.variableName]);
568 String toString() => variableName == null 570 String toString() => variableName == null
569 ? "Reading static variable during its initialization" 571 ? "Reading static variable during its initialization"
570 : "Reading static variable '$variableName' during its initialization"; 572 : "Reading static variable '$variableName' during its initialization";
571 } 573 }
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