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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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 library dart._js_helper; | 5 library dart._js_helper; |
6 | 6 |
7 import 'dart:collection'; | 7 import 'dart:collection'; |
8 | 8 |
9 import 'dart:_debugger' show stackTraceMapper; | 9 import 'dart:_debugger' show stackTraceMapper; |
10 | 10 |
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854 | 854 |
855 /** | 855 /** |
856 * Error thrown when a runtime error occurs. | 856 * Error thrown when a runtime error occurs. |
857 */ | 857 */ |
858 class RuntimeError extends Error { | 858 class RuntimeError extends Error { |
859 final message; | 859 final message; |
860 RuntimeError(this.message); | 860 RuntimeError(this.message); |
861 String toString() => "RuntimeError: $message"; | 861 String toString() => "RuntimeError: $message"; |
862 } | 862 } |
863 | 863 |
864 /** | 864 /// Error thrown by DDC when an `assert()` fails (with or without a message). |
865 * Error thrown when an assert() fails with a message: | 865 class AssertionErrorImpl extends AssertionError { |
866 * | 866 AssertionErrorImpl(message) : super(message); |
867 * assert(false, "Message here"); | 867 String toString() => |
868 */ | 868 "Assertion failed: " + |
869 class AssertionErrorWithMessage extends AssertionError { | 869 (message != null ? Error.safeToString(message) : "is not true"); |
Jennifer Messerly
2017/07/07 23:43:17
this uses Error.safeToString as dart2js does
VM/d
| |
870 final Object _message; | |
871 AssertionErrorWithMessage(this._message); | |
872 String toString() => "Assertion failed: ${_message}"; | |
873 } | 870 } |
874 | 871 |
875 /** | 872 /** |
876 * Creates a random number with 64 bits of randomness. | 873 * Creates a random number with 64 bits of randomness. |
877 * | 874 * |
878 * This will be truncated to the 53 bits available in a double. | 875 * This will be truncated to the 53 bits available in a double. |
879 */ | 876 */ |
880 int random64() { | 877 int random64() { |
881 // TODO(lrn): Use a secure random source. | 878 // TODO(lrn): Use a secure random source. |
882 int int32a = JS("int", "(Math.random() * 0x100000000) >>> 0"); | 879 int int32a = JS("int", "(Math.random() * 0x100000000) >>> 0"); |
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915 // we have no way of telling the compiler yet, so it will generate an extra | 912 // we have no way of telling the compiler yet, so it will generate an extra |
916 // layer of indirection that wraps the SyncIterator. | 913 // layer of indirection that wraps the SyncIterator. |
917 _jsIterator() => JS('', '#(...#)', _generator, _args); | 914 _jsIterator() => JS('', '#(...#)', _generator, _args); |
918 | 915 |
919 Iterator<E> get iterator => new SyncIterator<E>(_jsIterator()); | 916 Iterator<E> get iterator => new SyncIterator<E>(_jsIterator()); |
920 } | 917 } |
921 | 918 |
922 class BooleanConversionAssertionError extends AssertionError { | 919 class BooleanConversionAssertionError extends AssertionError { |
923 toString() => 'Failed assertion: boolean expression must not be null'; | 920 toString() => 'Failed assertion: boolean expression must not be null'; |
924 } | 921 } |
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