35 lines
1.2 KiB
Dart
35 lines
1.2 KiB
Dart
import 'empty/empty.dart';
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import 'reflector.dart';
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/// A [Reflector] implementation that throws exceptions on all attempts
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/// to perform reflection.
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///
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/// Use this in contexts where you know you won't need any reflective capabilities.
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class ThrowingReflector extends Reflector {
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/// The error message to give the end user when an [UnsupportedError] is thrown.
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final String errorMessage;
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static const String defaultErrorMessage =
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'You attempted to perform a reflective action, but you are using `ThrowingReflector`, '
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'a class which disables reflection. Consider using the `MirrorsReflector` '
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'class if you need reflection.';
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const ThrowingReflector({this.errorMessage = defaultErrorMessage});
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@override
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String? getName(Symbol symbol) => const EmptyReflector().getName(symbol);
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UnsupportedError _error() => UnsupportedError(errorMessage);
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@override
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ReflectedClass reflectClass(Type clazz) => throw _error();
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@override
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ReflectedInstance reflectInstance(Object object) => throw _error();
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@override
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ReflectedType reflectType(Type type) => throw _error();
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@override
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ReflectedFunction reflectFunction(Function function) => throw _error();
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}
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