Struct StateManager 

pub struct StateManager {
    accounts: HashMap<String, AccountState>,
    snapshots: Vec<StateSnapshot>,
    change_log: Vec<StateChange>,
    change_count: u64,
}

State manager for account and contract states

Fields

accounts: HashMap<String, AccountState>

snapshots: Vec<StateSnapshot>

change_log: Vec<StateChange>

change_count: u64

Implementations

impl StateManager

pub fn new(_config: &RuntimeConfig) -> Result<Self, RuntimeError>

Create new state manager

impl StateManager

pub fn get_account(&self, address: &str) -> Option<&AccountState>

Get account state

pub fn get_balance(&self, address: &str) -> Result<u64, RuntimeError>

Get account balance

pub fn set_balance( &mut self, address: &str, balance: u64, ) -> Result<(), RuntimeError>

Set account balance

pub fn get_nonce(&self, address: &str) -> Result<u64, RuntimeError>

Get account nonce

pub fn set_nonce( &mut self, address: &str, nonce: u64, ) -> Result<(), RuntimeError>

Set account nonce

pub fn get_code(&self, address: &str) -> Option<&[u8]>

Get contract code

pub fn set_code( &mut self, address: &str, code: &[u8], ) -> Result<(), RuntimeError>

Set contract code

pub fn create_account( &mut self, address: &str, initial_balance: u64, ) -> Result<(), RuntimeError>

Create new account

pub fn delete_account(&mut self, address: &str) -> Result<(), RuntimeError>

Delete account

pub fn account_exists(&self, address: &str) -> bool

Check if account exists

pub fn transfer( &mut self, from: &str, to: &str, amount: u64, ) -> Result<(), RuntimeError>

Transfer balance between accounts

impl StateManager

pub fn create_snapshot(&mut self, description: String) -> u64

Create state snapshot

pub fn get_snapshot(&self) -> StateSnapshot

Get state snapshot

pub fn restore_snapshot( &mut self, snapshot: StateSnapshot, ) -> Result<(), RuntimeError>

Restore from snapshot

impl StateManager

pub fn change_count(&self) -> u64

Get change count

pub fn get_recent_changes(&self, count: usize) -> &[StateChange]

Get recent changes

pub fn clear_change_log(&mut self)

Clear change log

impl StateManager

pub fn execute_batch(&mut self, batch: StateBatch) -> Result<(), RuntimeError>

Execute state batch

fn apply_change(&mut self, change: &StateChange) -> Result<(), RuntimeError>

impl StateManager

pub fn query_state(&self, query: StateQuery) -> Vec<&AccountState>

Query state with filters

pub fn get_statistics(&self) -> StateStatistics

Get state statistics

impl StateManager

fn record_change(&mut self, change: StateChange)

fn calculate_hash(&self, data: &[u8]) -> String

fn current_timestamp(&self) -> u64

Trait Implementations

impl Clone for StateManager

fn clone(&self) -> StateManager

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StateManager

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

Formats the value using the given formatter.

impl Default for StateManager

fn default() -> StateManager

Returns the “default value” for a type.