Struct holochain::core::HoloHashed

pub struct HoloHashed<C> where
    C: HashableContent,  { /* fields omitted */ }

Represents some piece of content along with its hash representation, so that hashes need not be calculated multiple times. Provides an easy constructor which consumes the content.

Implementations

impl<C> HoloHashed<C> where
    C: HashableContent, 

pub fn with_pre_hashed(
    content: C,
    hash: HoloHash<<C as HashableContent>::HashType>
) -> HoloHashed<C>

Combine content with its precalculated hash

pub fn as_content(&self) -> &C

Accessor for content

pub fn as_content_mut(&mut self) -> &mut C

Mutable accessor for content. Only useful for heavily mocked/fixturated data in testing. Guaranteed the hash will no longer match the content if mutated.

pub fn into_content(self) -> C

Convert to content

pub fn into_inner(self) -> (C, HoloHash<<C as HashableContent>::HashType>)

Deconstruct as a tuple

impl<T, C> HoloHashed<C> where
    T: HashTypeSync,
    C: HashableContent<HashType = T>, 

pub fn from_content_sync(content: C) -> HoloHashed<C>

Compute the hash of this content and store it alongside

pub fn verify_hash_sync(&self) -> Result<(), HoloHash<T>>

Verify that the cached hash matches the content. Important to run this after e.g. deserialization.

impl<T, C> HoloHashed<C> where
    T: HashTypeAsync,
    C: HashableContent<HashType = T>, 

pub async fn from_content(content: C) -> HoloHashed<C>

Compute the hash of this content and store it alongside

pub async fn verify_hash(&'_ self) -> Result<(), HoloHash<T>>

Verify that the cached hash matches the content. Important to run this after e.g. deserialization.

Trait Implementations

impl<'a, C> Arbitrary<'a> for HoloHashed<C> where
    C: HashableContent + Arbitrary<'a>,
    <C as HashableContent>::HashType: PrimitiveHashType, 

pub fn arbitrary(u: &mut Unstructured<'a>) -> Result<HoloHashed<C>, Error>

Generate an arbitrary value of Self from the given unstructured data.

fn arbitrary_take_rest(u: Unstructured<'a>) -> Result<Self, Error>

Generate an arbitrary value of Self from the entirety of the given unstructured data.

fn size_hint(depth: usize) -> (usize, Option<usize>)

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself.

impl<C> AsRef<C> for HoloHashed<C> where
    C: HashableContent, 

pub fn as_ref(&self) -> &C

Performs the conversion.

impl<C> Borrow<C> for HoloHashed<C> where
    C: HashableContent, 

pub fn borrow(&self) -> &C

Immutably borrows from an owned value.

impl<C> Clone for HoloHashed<C> where
    C: HashableContent + Clone, 

pub fn clone(&self) -> HoloHashed<C>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<C> Debug for HoloHashed<C> where
    C: Debug + HashableContent, 

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

Formats the value using the given formatter.

impl<C> Deref for HoloHashed<C> where
    C: HashableContent, 

type Target = C

The resulting type after dereferencing.

pub fn deref(&self) -> &<HoloHashed<C> as Deref>::Target

Dereferences the value.

impl<'de, C> Deserialize<'de> for HoloHashed<C> where
    C: HashableContent + Deserialize<'de>, 

pub fn deserialize<__D>(
    __deserializer: __D
) -> Result<HoloHashed<C>, <__D as Deserializer<'de>>::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl From<SignedHeaderHashed> for HoloHashed<SignedHeader>

pub fn from(shh: SignedHeaderHashed) -> HoloHashed<SignedHeader>

Performs the conversion.

impl From<SignedHeaderHashed> for HoloHashed<Header>

pub fn from(signed_header_hashed: SignedHeaderHashed) -> HoloHashed<Header>

Performs the conversion.

impl<C> HasHash<<C as HashableContent>::HashType> for HoloHashed<C> where
    C: HashableContent, 

pub fn as_hash(&self) -> &HoloHash<<C as HashableContent>::HashType>

Get the hash by reference

pub fn into_hash(self) -> HoloHash<<C as HashableContent>::HashType>

Convert to the owned hash

impl<C> Hash for HoloHashed<C> where
    C: HashableContent, 

pub fn hash<StdH>(&self, state: &mut StdH) where
    StdH: Hasher, 

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<C> PartialEq<HoloHashed<C>> for HoloHashed<C> where
    C: HashableContent, 

pub fn eq(&self, other: &HoloHashed<C>) -> bool

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

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

This method tests for !=.

impl<C> Serialize for HoloHashed<C> where
    C: HashableContent + Serialize, 

pub fn serialize<__S>(
    &self,
    __serializer: __S
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl<C> Eq for HoloHashed<C> where
    C: HashableContent,