Struct arc_bytes::serde::CowBytes

pub struct CowBytes<'a>(pub Cow<'a, [u8]>);

A Cow<'a, [u8]> wrapper that supports serializing efficiently in Serde.

Tuple Fields

0: Cow<'a, [u8]>

Implementations

impl<'a> CowBytes<'a>

pub fn into_cow(self) -> Cow<'a, [u8]>

Returns the underlying Cow.

pub fn into_vec(self) -> Vec<u8>

Returns the underlying Vec inside of the Cow, or clones the borrowed bytes into a new Vec..

Methods from Deref<Target = Cow<'a, [u8]>>

pub fn is_borrowed(&self) -> bool

🔬 This is a nightly-only experimental API. (cow_is_borrowed)

Returns true if the data is borrowed, i.e. if to_mut would require additional work.

Examples

#![feature(cow_is_borrowed)]
use std::borrow::Cow;

let cow = Cow::Borrowed("moo");
assert!(cow.is_borrowed());

let bull: Cow<'_, str> = Cow::Owned("...moo?".to_string());
assert!(!bull.is_borrowed());

pub fn is_owned(&self) -> bool

🔬 This is a nightly-only experimental API. (cow_is_borrowed)

Returns true if the data is owned, i.e. if to_mut would be a no-op.

Examples

#![feature(cow_is_borrowed)]
use std::borrow::Cow;

let cow: Cow<'_, str> = Cow::Owned("moo".to_string());
assert!(cow.is_owned());

let bull = Cow::Borrowed("...moo?");
assert!(!bull.is_owned());

pub fn to_mut(&mut self) -> &mut <B as ToOwned>::Owned

Acquires a mutable reference to the owned form of the data.

Clones the data if it is not already owned.

Examples

use std::borrow::Cow;

let mut cow = Cow::Borrowed("foo");
cow.to_mut().make_ascii_uppercase();

assert_eq!(
  cow,
  Cow::Owned(String::from("FOO")) as Cow<str>
);

Trait Implementations

impl<'a> Clone for CowBytes<'a>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for CowBytes<'a>

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

Formats the value using the given formatter.

impl<'a> Default for CowBytes<'a>

fn default() -> CowBytes<'a>

Returns the “default value” for a type.

impl<'a> Deref for CowBytes<'a>

type Target = Cow<'a, [u8]>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<'a> DerefMut for CowBytes<'a>

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<'de: 'a, 'a> Deserialize<'de> for CowBytes<'a>

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
    D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl<'a> From<&'a [u8]> for CowBytes<'a>

fn from(buffer: &'a [u8]) -> Self

Performs the conversion.

impl<'a> From<Bytes> for CowBytes<'a>

fn from(bytes: Bytes) -> Self

Performs the conversion.

impl<'a> From<CowBytes<'a>> for Bytes

fn from(bytes: CowBytes<'a>) -> Self

Performs the conversion.

impl<'a> From<CowBytes<'a>> for ArcBytes<'a>

fn from(bytes: CowBytes<'a>) -> Self

Performs the conversion.

impl<'a> From<Vec<u8, Global>> for CowBytes<'a>

fn from(buffer: Vec<u8>) -> Self

Performs the conversion.

impl<'a> Hash for CowBytes<'a>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl<'a> Ord for CowBytes<'a>

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

Restrict a value to a certain interval.

impl<'a> PartialEq<CowBytes<'a>> for CowBytes<'a>

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

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &CowBytes<'a>) -> bool

This method tests for !=.

impl<'a> PartialOrd<CowBytes<'a>> for CowBytes<'a>

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl<'a> Serialize for CowBytes<'a>

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

Serialize this value into the given Serde serializer.

impl<'a> Eq for CowBytes<'a>

impl<'a> StructuralEq for CowBytes<'a>

impl<'a> StructuralPartialEq for CowBytes<'a>