Struct AccountStorageHeader 

pub struct AccountStorageHeader { /* private fields */ }

Account storage header is a lighter version of the AccountStorage storing only the type and the top-level value for each storage slot.

That is, for complex storage slots (e.g., storage maps), the header contains only the commitment to the underlying data.

Implementations

impl AccountStorageHeader

pub fn new(slots: Vec<(StorageSlotType, Word)>) -> Self

Returns a new instance of account storage header initialized with the provided slots.

Panics

• If the number of provided slots is greater than AccountStorage::MAX_NUM_STORAGE_SLOTS.

pub fn slots(&self) -> impl Iterator<Item = &(StorageSlotType, Word)>

Returns an iterator over the storage header slots.

pub fn map_slot_roots(&self) -> impl Iterator<Item = Word>

Returns an iterator over the storage header map slots.

pub fn num_slots(&self) -> u8

Returns the number of slots contained in the storage header.

pub fn slot( &self, index: usize, ) -> Result<&(StorageSlotType, Word), AccountError>

Returns a slot contained in the storage header at a given index.

Errors

• If the index is out of bounds.

pub fn compute_commitment(&self) -> Word

Computes the account storage header commitment.

pub fn is_map_slot(&self, index: usize) -> Result<bool, AccountError>

Indicates whether the slot at index is a map slot.

Errors

• If index exceeds the slot count.

pub fn as_elements(&self) -> Vec<Felt>

Converts storage slots of this account storage header into a vector of field elements.

This is done by first converting each storage slot into exactly 8 elements as follows:

[STORAGE_SLOT_VALUE, storage_slot_type, 0, 0, 0]

And then concatenating the resulting elements into a single vector.

Trait Implementations

impl Clone for AccountStorageHeader

fn clone(&self) -> AccountStorageHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AccountStorageHeader

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

Formats the value using the given formatter.

impl Deserializable for AccountStorageHeader

fn read_from<R: ByteReader>( source: &mut R, ) -> Result<Self, DeserializationError>

Reads a sequence of bytes from the provided source, attempts to deserialize these bytes into Self, and returns the result.

fn read_from_bytes(bytes: &[u8]) -> Result<Self, DeserializationError>

Attempts to deserialize the provided bytes into Self and returns the result.

impl From<&AccountStorage> for AccountStorageHeader

fn from(value: &AccountStorage) -> Self

Converts to this type from the input type.

impl PartialEq for AccountStorageHeader

fn eq(&self, other: &AccountStorageHeader) -> 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 Serializable for AccountStorageHeader

fn write_into<W: ByteWriter>(&self, target: &mut W)

Serializes self into bytes and writes these bytes into the target.

fn to_bytes(&self) -> Vec<u8>

Serializes self into a vector of bytes.

fn get_size_hint(&self) -> usize

Returns an estimate of how many bytes are needed to represent self.

impl Eq for AccountStorageHeader

impl StructuralPartialEq for AccountStorageHeader