Struct PrefixedVec

pub struct PrefixedVec<L, T> { /* private fields */ }

PrefixedVec allows overriding the default u8 size of the length prefix for a Vec.

This is useful when the size of a Vec is greater than 255 and we wish to override the Pyth serialization logic to use a u16 etc instead. This works by serializing the Vec as a struct with a len field with the overridden type, when combined with PrefixlessVec below the combination of { "len": L, "data": [T] } is serialized as expected in the wire format.

For non-Pyth formats this results in a struct which is the correct way to interpret our data on chain anyway.

Implementations

impl<L, T> PrefixedVec<L, T>

pub fn iter(&self) -> Iter<'_, T>

Trait Implementations

impl<L, T> AsRef<Vec<T>> for PrefixedVec<L, T>

fn as_ref(&self) -> &Vec<T>

Converts this type into a shared reference of the (usually inferred) input type.

impl<L, T> BorshDeserialize for PrefixedVec<L, T>

where PhantomData<L>: BorshDeserialize, PrefixlessVec<T>: BorshDeserialize,

fn deserialize_reader<R: Read>(reader: &mut R) -> Result<Self, Error>

fn deserialize(buf: &mut &[u8]) -> Result<Self, Error>

Deserializes this instance from a given slice of bytes. Updates the buffer to point at the remaining bytes.

fn try_from_slice(v: &[u8]) -> Result<Self, Error>

Deserialize this instance from a slice of bytes.

fn try_from_reader<R>(reader: &mut R) -> Result<Self, Error>

where R: Read,

impl<L, T> BorshSerialize for PrefixedVec<L, T>

where PhantomData<L>: BorshSerialize, PrefixlessVec<T>: BorshSerialize,

fn serialize<W: Write>(&self, writer: &mut W) -> Result<(), Error>

fn try_to_vec(&self) -> Result<Vec<u8>, Error>

Serialize this instance into a vector of bytes.

impl<L: Clone, T: Clone> Clone for PrefixedVec<L, T>

fn clone(&self) -> PrefixedVec<L, T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<L: Debug, T: Debug> Debug for PrefixedVec<L, T>

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

Formats the value using the given formatter.

impl<'de, L, T> Deserialize<'de> for PrefixedVec<L, T>

where T: Deserialize<'de>, L: Deserialize<'de> + Into<usize> + Copy,

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

Deserialize this value from the given Serde deserializer.

impl<L, T> From<PrefixedVec<L, T>> for Vec<T>

fn from(data: PrefixedVec<L, T>) -> Self

Converts to this type from the input type.

impl<L, T> From<Vec<T>> for PrefixedVec<L, T>

fn from(data: Vec<T>) -> Self

Converts to this type from the input type.

impl<L: Hash, T: Hash> Hash for PrefixedVec<L, T>

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, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<L, T> IntoIterator for PrefixedVec<L, T>

type Item = T

The type of the elements being iterated over.

type IntoIter = IntoIter<<PrefixedVec<L, T> as IntoIterator>::Item>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<L: PartialEq, T: PartialEq> PartialEq for PrefixedVec<L, T>

fn eq(&self, other: &PrefixedVec<L, T>) -> 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<L: PartialOrd, T: PartialOrd> PartialOrd for PrefixedVec<L, T>

fn partial_cmp(&self, other: &PrefixedVec<L, T>) -> 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<L, T> Serialize for PrefixedVec<L, T>

where T: Serialize, L: Serialize + TryFrom<usize>, <L as TryFrom<usize>>::Error: Debug,

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

Serialize this value into the given Serde serializer.

impl<L, T> StructuralPartialEq for PrefixedVec<L, T>