Enum JournalEntry 

pub enum JournalEntry {
    AccountWarmed {
        address: Address,
    },
    AccountDestroyed {
        had_balance: Uint<256, 4>,
        address: Address,
        target: Address,
        destroyed_status: SelfdestructionRevertStatus,
    },
    AccountTouched {
        address: Address,
    },
    BalanceChange {
        old_balance: Uint<256, 4>,
        address: Address,
    },
    BalanceTransfer {
        balance: Uint<256, 4>,
        from: Address,
        to: Address,
    },
    NonceChange {
        address: Address,
    },
    AccountCreated {
        address: Address,
        is_created_globally: bool,
    },
    StorageChanged {
        key: Uint<256, 4>,
        had_value: Uint<256, 4>,
        address: Address,
    },
    StorageWarmed {
        key: Uint<256, 4>,
        address: Address,
    },
    TransientStorageChange {
        key: Uint<256, 4>,
        had_value: Uint<256, 4>,
        address: Address,
    },
    CodeChange {
        address: Address,
    },
}

Journal entries that are used to track changes to the state and are used to revert it.

Variants

AccountWarmed

Used to mark account that is warm inside EVM in regard to EIP-2929 AccessList. Action: We will add Account to state. Revert: we will remove account from state.

Fields

address: Address

Address of warmed account.

AccountDestroyed

Mark account to be destroyed and journal balance to be reverted Action: Mark account and transfer the balance Revert: Unmark the account and transfer balance back

Fields

had_balance: Uint<256, 4>

Balance of account got transferred to target.

address: Address

Address of account to be destroyed.

target: Address

Address of account that received the balance.

destroyed_status: SelfdestructionRevertStatus

Status of selfdestruction revert.

AccountTouched

Loading account does not mean that account will need to be added to MerkleTree (touched). Only when account is called (to execute contract or transfer balance) only then account is made touched. Action: Mark account touched Revert: Unmark account touched

Fields

address: Address

Address of account that is touched.

BalanceChange

Balance changed Action: Balance changed Revert: Revert to previous balance

Fields

old_balance: Uint<256, 4>

New balance of account.

address: Address

Address of account that had its balance changed.

BalanceTransfer

Transfer balance between two accounts Action: Transfer balance Revert: Transfer balance back

Fields

balance: Uint<256, 4>

Balance that is transferred.

from: Address

Address of account that sent the balance.

to: Address

Address of account that received the balance.

NonceChange

Increment nonce Action: Increment nonce by one Revert: Decrement nonce by one

Fields

address: Address

Address of account that had its nonce changed. Nonce is incremented by one.

AccountCreated

Create account: Actions: Mark account as created Revert: Unmark account as created and reset nonce to zero.

Fields

address: Address

Address of account that is created. On revert, this account will be set to empty.

is_created_globally: bool

If account is created globally for first time.

StorageChanged

Entry used to track storage changes Action: Storage change Revert: Revert to previous value

Fields

key: Uint<256, 4>

Key of storage slot that is changed.

had_value: Uint<256, 4>

Previous value of storage slot.

address: Address

Address of account that had its storage changed.

StorageWarmed

Entry used to track storage warming introduced by EIP-2929. Action: Storage warmed Revert: Revert to cold state

Fields

key: Uint<256, 4>

Key of storage slot that is warmed.

address: Address

Address of account that had its storage warmed. By SLOAD or SSTORE opcode.

TransientStorageChange

It is used to track an EIP-1153 transient storage change. Action: Transient storage changed. Revert: Revert to previous value.

Fields

key: Uint<256, 4>

Key of transient storage slot that is changed.

had_value: Uint<256, 4>

Previous value of transient storage slot.

address: Address

Address of account that had its transient storage changed.

CodeChange

Code changed Action: Account code changed Revert: Revert to previous bytecode.

Fields

address: Address

Address of account that had its code changed.

Trait Implementations

impl Clone for JournalEntry

fn clone(&self) -> JournalEntry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JournalEntry

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for JournalEntry

fn deserialize<__D>( __deserializer: __D, ) -> Result<JournalEntry, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for JournalEntry

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

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 JournalEntryTr for JournalEntry

fn account_warmed(address: Address) -> JournalEntry

Creates a journal entry for when an account is accessed and marked as “warm” for gas metering

fn account_destroyed( address: Address, target: Address, destroyed_status: SelfdestructionRevertStatus, had_balance: Uint<256, 4>, ) -> JournalEntry

Creates a journal entry for when an account is destroyed via SELFDESTRUCT Records the target address that received the destroyed account’s balance, whether the account was already destroyed, and its balance before destruction on revert, the balance is transferred back to the original account

fn account_touched(address: Address) -> JournalEntry

Creates a journal entry for when an account is “touched” - accessed in a way that may require saving it. If account is empty and touch it will be removed from the state (EIP-161 state clear EIP)

fn balance_changed(address: Address, old_balance: Uint<256, 4>) -> JournalEntry

Creates a journal entry for when an account’s balance is changed.

fn balance_transfer( from: Address, to: Address, balance: Uint<256, 4>, ) -> JournalEntry

Creates a journal entry for a balance transfer between accounts

fn account_created(address: Address, is_created_globally: bool) -> JournalEntry

Creates a journal entry for when a new account is created

fn storage_changed( address: Address, key: Uint<256, 4>, had_value: Uint<256, 4>, ) -> JournalEntry

Creates a journal entry for when a storage slot is modified Records the previous value for reverting

fn nonce_changed(address: Address) -> JournalEntry

Creates a journal entry for when an account’s nonce is incremented.

fn storage_warmed(address: Address, key: Uint<256, 4>) -> JournalEntry

Creates a journal entry for when a storage slot is accessed and marked as “warm” for gas metering This is called with SLOAD opcode.

fn transient_storage_changed( address: Address, key: Uint<256, 4>, had_value: Uint<256, 4>, ) -> JournalEntry

Creates a journal entry for when a transient storage slot is modified (EIP-1153) Records the previous value for reverting

fn code_changed(address: Address) -> JournalEntry

Creates a journal entry for when an account’s code is modified

fn revert( self, state: &mut HashMap<Address, Account>, transient_storage: Option<&mut HashMap<(Address, Uint<256, 4>), Uint<256, 4>>>, is_spurious_dragon_enabled: bool, )

Reverts the state change recorded by this journal entry

impl PartialEq for JournalEntry

fn eq(&self, other: &JournalEntry) -> 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 Serialize for JournalEntry

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for JournalEntry

impl StructuralPartialEq for JournalEntry