Struct AccountStorage 

pub struct AccountStorage { /* private fields */ }

A simpler implementation of CacheDB that can’t query a node. It just stores data.

Implementations

impl AccountStorage

pub fn new() -> Self

pub fn clear(&mut self)

Clear all accounts from the storage.

pub fn init_account( &mut self, address: Address, info: AccountInfo, permanent_storage: Option<HashMap<U256, U256>>, mocked: bool, )

Inserts account data into the current instance.

Arguments

• address - The address of the account to insert.
• info - The account information to insert.
• permanent_storage - Optional storage information associated with the account.
• mocked - Whether this account should be considered mocked.

Notes

This function checks if the address is already present in the accounts collection. If so, it logs a warning and returns without modifying the instance. Otherwise, it stores a new Account instance with the provided data at the given address.

pub fn update_account(&mut self, address: &Address, update: &StateUpdate)

Updates the account information and storage associated with the given address.

Arguments

• address - The address of the account to update.
• update - The state update containing the new information to apply.

Notes

This function looks for the account information and storage associated with the provided address. If the address exists in the accounts collection, it updates the account information based on the balance field in the update parameter. If the address exists in the storage collection, it updates the storage information based on the storage field in the update parameter.

If the address is not found in either collection, a warning is logged and no changes are made.

pub fn get_account_info(&self, address: &Address) -> Option<&AccountInfo>

Retrieves the account information for a given address.

This function retrieves the account information associated with the specified address from the storage.

Arguments

• address: The address of the account to retrieve the information for.

Returns

Returns an Option that holds a reference to the AccountInfo. If the account is not found, None is returned.

pub fn account_present(&self, address: &Address) -> bool

Checks if an account with the given address is present in the storage.

Arguments

• address: A reference to the address of the account to check.

Returns

Returns true if an account with the specified address is present in the storage, otherwise returns false.

pub fn set_temp_storage(&mut self, address: Address, index: U256, value: U256)

Sets the storage value at the specified index for the given account.

If the account exists in the storage, the storage value at the specified index is updated. If the account does not exist, a warning message is logged indicating an attempt to set storage on an uninitialized account.

Arguments

• address: The address of the account to set the storage value for.
• index: The index of the storage value to set.
• value: The new value to set for the storage.

pub fn get_storage(&self, address: &Address, index: &U256) -> Option<U256>

Retrieves the storage value at the specified index for the given account, if it exists.

If the account exists in the storage, the storage value at the specified index is returned as a reference. Temp storage takes priority over permanent storage. If the account does not exist, None is returned.

Arguments

• address: A reference to the address of the account to retrieve the storage value from.
• index: A reference to the index of the storage value to retrieve.

Returns

Returns an Option containing a reference to the storage value if it exists, otherwise returns None.

pub fn get_permanent_storage( &self, address: &Address, index: &U256, ) -> Option<U256>

Retrieves the permanent storage value for the given address and index.

If an account with the specified address exists in the account storage, this function retrieves the corresponding permanent storage value associated with the given index.

Arguments

• address - The address of the account.
• index - The index of the desired storage value.

pub fn clear_temp_storage(&mut self)

Removes all temp storage values.

Iterates over the accounts in the storage and removes all temp storage values

pub fn is_mocked_account(&self, address: &Address) -> Option<bool>

Checks if an account is mocked based on its address.

Arguments

• address - A reference to the account address.

Trait Implementations

impl Clone for AccountStorage

fn clone(&self) -> AccountStorage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AccountStorage

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

Formats the value using the given formatter.

impl Default for AccountStorage

fn default() -> AccountStorage

Returns the “default value” for a type.