Struct evm::AccountState

pub struct AccountState { /* fields omitted */ }

A struct that manages the current account state for one EVM.

Methods

impl AccountState

fn used_addresses(&self) -> HashSet<Address>

Returns all fetched or modified addresses.

fn accounts(&self) -> Values<Address, AccountChange>

Returns all accounts right now in this account state.

fn require(&self, address: Address) -> Result<(), RequireError>

Returns Ok(()) if a full account is in this account state. Otherwise raise a RequireError.

fn require_code(&self, address: Address) -> Result<(), RequireError>

Returns Ok(()) if either a full account or a partial code account is in this account state. Otherwise raise a RequireError.

fn require_storage(
    &self,
    address: Address,
    index: U256
) -> Result<(), RequireError>

Returns Ok(()) if the storage exists in the VM. Otherwise raise a RequireError.

fn commit(&mut self, commitment: AccountCommitment) -> Result<(), CommitError>

Commit an account commitment into this account state.

fn exists(&self, address: Address) -> Result<bool, RequireError>

Test whether an account at given address is considered existing.

fn premark_exists(&mut self, address: Address)

Premark an address as exist.

fn code(&self, address: Address) -> Result<&[u8], RequireError>

Find code by its address in this account state. If the search failed, returns a RequireError.

fn nonce(&self, address: Address) -> Result<U256, RequireError>

Find nonce by its address in this account state. If the search failed, returns a RequireError.

fn balance(&self, address: Address) -> Result<U256, RequireError>

Find balance by its address in this account state. If the search failed, returns a RequireError.

fn storage(&self, address: Address) -> Result<&Storage, RequireError>

Returns the storage of an account. If the account is not yet committed, returns a RequireError.

fn storage_mut(
    &mut self,
    address: Address
) -> Result<&mut Storage, RequireError>

Returns the mutable storage of an account. If the account is not yet committed. returns a RequireError.

fn create(&mut self, address: Address, topup: U256) -> Result<(), RequireError>

Create a new account (that should not yet have existed before).

fn code_deposit(&mut self, address: Address, new_code: &[u8])

Deposit code in to a created account.

fn increase_balance(&mut self, address: Address, topup: U256)

Increase the balance of an account.

fn decrease_balance(&mut self, address: Address, withdraw: U256)

Decrease the balance of an account.

fn set_nonce(
    &mut self,
    address: Address,
    new_nonce: U256
) -> Result<(), RequireError>

Set nonce of an account. If the account is not already commited, returns a RequireError.

fn remove(&mut self, address: Address) -> Result<(), RequireError>

Delete an account from this account state. The account is set to null. If the account is not already commited, returns a RequireError.

Trait Implementations

impl Debug for AccountState

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Clone for AccountState

fn clone(&self) -> AccountState

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for AccountState

fn default() -> Self

Returns the "default value" for a type.