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PurgeScope

evm_fork_cache::state_update

Enum PurgeScope 

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#[non_exhaustive]
pub enum PurgeScope {
    Account,
    AllStorage,
    Slots(Vec<U256>),
}
Expand description

What part of an address’s cached state a purge removes.

The enum is #[non_exhaustive]: new scopes may be added pre-1.0 without a breaking change.

§StorageCleared/NotExisting accounts

Purging storage (AllStorage / Slots) removes the slot from the backend so a normal forked account re-fetches it on the next read. For an account revm marks StorageCleared/NotExisting (a locally-created/cleared account, e.g. after a CREATE/selfdestruct), the EVM reads a missing slot as zero without re-fetching — its storage is locally complete — so a purged slot reads 0, not a fresh RPC value. This is correct (such an account has no on-chain storage to refetch), but it means Slots does not force a refetch for those accounts. Use Account (or purge_account) to fully drop the account.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.
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Account

Full account: AccountInfo (balance/nonce/code) and all storage. Equivalent to EvmCache::purge_account.

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AllStorage

All storage slots; account info preserved. Equivalent to EvmCache::purge_contract_storage.

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Slots(Vec<U256>)

Only the listed storage slots. Equivalent to EvmCache::purge_contract_slots.

Trait Implementations§

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impl Clone for PurgeScope

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fn clone(&self) -> PurgeScope

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for PurgeScope

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

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for PurgeScope

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

Deserialize this value from the given Serde deserializer. Read more
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impl Eq for PurgeScope

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impl PartialEq for PurgeScope

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fn eq(&self, other: &PurgeScope) -> bool

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for PurgeScope

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

Serialize this value into the given Serde serializer. Read more
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impl StructuralPartialEq for PurgeScope

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