Struct AnyMessage 

pub struct AnyMessage(/* private fields */);

A heap-allocated message that can be downcasted to a concrete message type.

It can be thought as a working version of Box<dyn Message>.

AnyMessage implements Message, thus it can be used in any context where a message is expected, e.g. sending via Context’s methods.

AnyMessage doesn’t implement Request, so it’s useful only for regular messages. However, requests are also messages and can be converted to AnyMessage, but usage is limited in this case.

Implementations

impl AnyMessage

pub fn new<M: Message>(message: M) -> Self

Converts a message into AnyMessage.

pub fn as_ref(&self) -> AnyMessageRef<'_>

Returns AnyMessageRef that borrows the message.

pub fn is<M: Message>(&self) -> bool

Checks if the message is of a specific type.

Note: it returns true if M is AnyMessage.

pub fn downcast_ref<M: Message>(&self) -> Option<&M>

Tries to downcast the message to a reference to the concrete type.

Note: it returns Some(&self) if M is AnyMessage.

pub fn downcast_mut<M: Message>(&mut self) -> Option<&mut M>

Tries to downcast the message to a mutable reference to the concrete type.

Note: it returns Some(&mut self) if M is AnyMessage.

pub fn downcast<M: Message>(self) -> Result<M, AnyMessage>

Tries to downcast the message to a concrete type.

Trait Implementations

impl Clone for AnyMessage

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AnyMessage

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AnyMessage

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Drop for AnyMessage

fn drop(&mut self)

Executes the destructor for this type.

impl Message for AnyMessage

fn name(&self) -> &'static str

fn protocol(&self) -> &'static str

impl Serialize for AnyMessage

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl Send for AnyMessage