Struct MessageRef

pub struct MessageRef<'a> { /* private fields */ }

Wrapper around either MessageFull reference or a container for an empty dynamic message.

Implementations

impl<'a> MessageRef<'a>

pub fn new(message: &'a dyn MessageDyn) -> MessageRef<'a>

Wrap a message.

pub fn default_instance(message: &MessageDescriptor) -> MessageRef<'static>

Default (empty) instance of given message type.

Methods from Deref<Target = dyn MessageDyn>

pub fn check_initialized_dyn(&self) -> Result<()>

Check if all required fields of this object are initialized.

pub fn write_to_writer_dyn(&self, w: &mut dyn Write) -> Result<()>

Write the message to the writer.

pub fn write_to_vec_dyn(&self, v: &mut Vec<u8>) -> Result<()>

Write the message to bytes vec.

pub fn write_to_dyn(&self, os: &mut CodedOutputStream<'_>) -> Result<()>

Write the message to the stream.

Results in error if message is not fully initialized.

pub fn write_length_delimited_to_vec_dyn(&self, vec: &mut Vec<u8>) -> Result<()>

Write the message to the vec, prepend the message with message length encoded as varint.

pub fn write_to_bytes_dyn(&self) -> Result<Vec<u8>>

Write the message to bytes vec.

Note: You can use Message::parse_from_bytes to do the reverse.

pub fn write_length_delimited_to_dyn( &self, os: &mut CodedOutputStream<'_>, ) -> Result<()>

Write the message to the stream prepending the message with message length encoded as varint.

pub fn write_length_delimited_to_writer_dyn( &self, w: &mut dyn Write, ) -> Result<()>

Write the message to the writer, prepend the message with message length encoded as varint.

pub fn write_length_delimited_to_bytes_dyn(&self) -> Result<Vec<u8>>

Write the message to the bytes vec, prepend the message with message length encoded as varint.

pub fn unknown_fields_dyn(&self) -> &UnknownFields

Get a reference to unknown fields.

pub fn downcast_ref<'a, M: MessageFull + 'a>(&'a self) -> Option<&'a M>

Downcast &dyn Message to specific message type.

let m: &dyn MessageDyn = message;
let m: &MyMessage = <dyn MessageDyn>::downcast_ref(m).unwrap();

pub fn clone_box(&self) -> Box<dyn MessageDyn>

Clone from a dyn Message reference.

pub fn reflect_eq_dyn( &self, other: &dyn MessageDyn, mode: &ReflectEqMode, ) -> bool

Reflectively compare the messages.

Trait Implementations

impl<'a> Clone for MessageRef<'a>

fn clone(&self) -> MessageRef<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for MessageRef<'a>

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

Formats the value using the given formatter.

impl<'a> Deref for MessageRef<'a>

type Target = dyn MessageDyn

The resulting type after dereferencing.

fn deref(&self) -> &dyn MessageDyn

Dereferences the value.

impl<'a> Display for MessageRef<'a>

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

Formats the value using the given formatter.

impl<'a, M: MessageFull> From<&'a M> for MessageRef<'a>

fn from(m: &'a M) -> Self

Converts to this type from the input type.

impl<'a> From<&'a (dyn MessageDyn + 'static)> for MessageRef<'a>

fn from(m: &'a dyn MessageDyn) -> Self

Converts to this type from the input type.

impl<'a> ReflectEq for MessageRef<'a>

fn reflect_eq(&self, that: &Self, mode: &ReflectEqMode) -> bool

Perform the equality comparison.