Struct AccountUpdate 

pub struct AccountUpdate { /* private fields */ }

Account SMT changes, applied as a single batch by AccountSmtForest::apply.

Recording is pure bookkeeping: the entries a change implies are worked out when the update is applied, which is where the forest can be read.

Implementations

impl AccountUpdate

pub fn new() -> AccountUpdate

Creates an update with no recorded changes.

pub fn vault_patch( &mut self, account_id: AccountId, patch: &AccountVaultPatch, expected_root: Word, )

Records an account’s vault patch, along with the vault root the transaction produced.

apply checks the resulting root against expected_root. That check is what ties the vault tree back to the transaction kernel’s result, so a wrong root fails the update instead of being persisted.

pub fn storage_patch( &mut self, account_id: AccountId, patch: &AccountStoragePatch, )

Records an account’s storage patch.

Map slots are layered onto their current tree for Update patches and replaced wholesale for Create and Remove. No per-slot root is recorded: the store checks the resulting map roots collectively against the transaction’s storage commitment, which also catches a tree that had drifted from the account tables.

pub fn full_state<'a>( &mut self, account_id: AccountId, assets: impl Iterator<Item = Asset>, slots: impl Iterator<Item = &'a StorageSlot>, )

Records that an account’s vault and map slots hold exactly the provided state.

Slots that the account no longer has are not implied by slots and must be named with Self::clear_map.

pub fn clear_map(&mut self, account_id: AccountId, slot_name: &StorageSlotName)

Records that one of an account’s map slots holds nothing.

Trait Implementations

impl Default for AccountUpdate

fn default() -> AccountUpdate

Returns the “default value” for a type.