Struct ExtensionRef 

pub struct ExtensionRef<'a> {
    pub type: i8,
    pub data: &'a [u8],
}

A borrowed view of a MessagePack extension value.

Note that the MessagePack header (FixExt vs Ext8/16/32) is determined by the payload length when encoding. See ExtensionRef::to_format.

Fields

type: i8

Application‑defined extension type code.

data: &'a [u8]

Borrowed payload bytes.

Implementations

impl<'a> ExtensionRef<'a>

pub fn new(type: i8, data: &'a [u8]) -> Self

Create a borrowed reference to extension data with the given type code.

pub fn to_format<E>(&self) -> Result<Format, Error<E>>

Decide the MessagePack format to use given the payload length.

• If data.len() is exactly 1, 2, 4, 8 or 16, FixExtN is selected.
• Otherwise, Ext8/Ext16/Ext32 is selected based on the byte length.

Trait Implementations

impl<'a> Clone for ExtensionRef<'a>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for ExtensionRef<'a>

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

Formats the value using the given formatter.

impl<'de> DecodeBorrowed<'de> for ExtensionRef<'de>

type Value = ExtensionRef<'de>

The decoded value.

fn decode_borrowed_with_format<R>( format: Format, reader: &mut R, ) -> Result<Self::Value, DecodeError<R::Error>>

where R: IoRead<'de>,

Decode with a previously read Format.

fn decode_borrowed<R>( reader: &mut R, ) -> Result<<Self as DecodeBorrowed<'de>>::Value, Error<R::Error>>

where R: IoRead<'de>,

Decode the next value.

impl<'a, W: IoWrite> Encode<W> for ExtensionRef<'a>

fn encode(&self, writer: &mut W) -> Result<usize, Error<W::Error>>

Encode this value to MessagePack and write bytes to writer.

impl<'a> From<ExtensionRef<'a>> for ExtensionOwned

Available on crate feature alloc only.

fn from(value: ExtensionRef<'a>) -> Self

Converts to this type from the input type.

impl<'a> Ord for ExtensionRef<'a>

fn cmp(&self, other: &ExtensionRef<'a>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<'a> PartialEq for ExtensionRef<'a>

fn eq(&self, other: &ExtensionRef<'a>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<'a> PartialOrd for ExtensionRef<'a>

fn partial_cmp(&self, other: &ExtensionRef<'a>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<const N: usize> TryFrom<ExtensionRef<'_>> for FixedExtension<N>

type Error = ExtensionCapacityError

The type returned in the event of a conversion error.

fn try_from(value: ExtensionRef<'_>) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ExtensionRef<'_>> for Timestamp32

type Error = TryFromTimestampError

The type returned in the event of a conversion error.

fn try_from(value: ExtensionRef<'_>) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ExtensionRef<'_>> for Timestamp64

type Error = TryFromTimestampError

The type returned in the event of a conversion error.

fn try_from(value: ExtensionRef<'_>) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<ExtensionRef<'_>> for Timestamp96

type Error = TryFromTimestampError

The type returned in the event of a conversion error.

fn try_from(value: ExtensionRef<'_>) -> Result<Self, Self::Error>

Performs the conversion.

impl<'a> Copy for ExtensionRef<'a>

impl<'a> Eq for ExtensionRef<'a>

impl<'a> StructuralPartialEq for ExtensionRef<'a>