40 lines
1.1 KiB
Dart
40 lines
1.1 KiB
Dart
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/// Base interface for exceptions thrown by a cache implementation.
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abstract class CacheException implements Exception {
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/// The error message.
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String get message;
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}
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/// Exception interface for invalid cache arguments.
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abstract class InvalidArgumentException implements CacheException {
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/// The error message.
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@override
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String get message;
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}
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/// A concrete implementation of CacheException.
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class SimpleCacheException implements CacheException {
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@override
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final String message;
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/// Creates a new cache exception.
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const SimpleCacheException([this.message = '']);
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@override
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String toString() =>
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message.isEmpty ? 'CacheException' : 'CacheException: $message';
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}
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/// A concrete implementation of InvalidArgumentException.
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class CacheInvalidArgumentException implements InvalidArgumentException {
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@override
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final String message;
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/// Creates a new invalid argument exception.
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const CacheInvalidArgumentException([this.message = '']);
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@override
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String toString() => message.isEmpty
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? 'InvalidArgumentException'
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: 'InvalidArgumentException: $message';
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}
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