ErrFlow<T> class

A class that facilitates handling and logging of errors.

Constructors

ErrFlow([T? defaultValue])

Creates an ErrFlow that facilitates handling and logging of errors.

Properties

criticalErrorHandler ↔ (void Function<S>(S, T?)?)

The default error handler function for critical errors.

getter/setter pair

defaultValue → T?

A getter for the value that was set in the constructor and is used as the initial value for lastError in an object of the ErrNotifier class and its variants in each scope().

no setter

errorHandler ↔ (void Function<S>(S, T?)?)

The default error handler function for non-critical errors.

getter/setter pair

hashCode → int

The hash code for this object.

no setter, inherited

logger ↔ (FutureOr<void> Function(Object, StackTrace?, {Object? reason})?)

A logger function that is called when an error is notified.

getter/setter pair

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

addListener(ErrListener<T> listener) → void

Registers a listener, which is a function to be called when new error information is set by ErrNotifier.set(), ErrNotifier.log(), LoggingErrNotifier.set() or LoggingErrNotifier.log().

combiningScope<S>(FutureOr<S> process(LoggingErrNotifier<T>)) → Future<CombinedResult<S, T>>

Executes the provided function process with an object of LoggingErrNotifier passed to it.

dispose() → void

Discards the resources used by the object. After this is called, the object is not in a usable state and should be discarded.

ignorableScope<S>(FutureOr<S> process(IgnorableErrNotifier<T>)) → Future<S>

Executes the provided function process with an object of IgnorableErrNotifier passed to it.

loggingScope<S>(FutureOr<S> process(LoggingErrNotifier<T>)) → Future<S>

Executes the provided function process with an object of LoggingErrNotifier passed to it.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

removeListener(ErrListener<T> listener) → void

Removes a previously registered listener from the list of listeners. If the given listener is not registered, the call is ignored.

scope<S>(FutureOr<S> process(ErrNotifier<T>), {bool errorIf(S, T?)?, bool criticalIf(S, T?)?, void onError(S, T?)?, void onCriticalError(S, T?)?}) → Future<S>

Executes the provided function process, and then calls either of the onError and onCriticalError callbacks if the condition specified by errorIf or criticalIf is met respectively at the point when the process ends.

toString() → String

A string representation of this object.

override

useDefaultLogger() → void

Sets the default logger to be used, which outputs information such as the message of an exception and the stack trace to the console.

Operators

operator ==(Object other) → bool

The equality operator.

inherited