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StorageCtx

tempo_precompiles::storage::thread_local

Struct StorageCtx 

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pub struct StorageCtx;
Expand description

Thread-local storage accessor that implements PrecompileStorageProvider without the trait bound.

This is the only type that exposes access to the thread-local STORAGE static.

§Important

Since it provides access to the current thread-local storage context, it MUST be used within a StorageCtx::enter closure.

§Sync with PrecompileStorageProvider

This type mirrors PrecompileStorageProvider methods but with split mutability:

  • Read operations (staticcall) take &self
  • Write operations take &mut self

Implementations§

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impl StorageCtx

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pub fn enter<S, R>(storage: &mut S, f: impl FnOnce() -> R) -> R
where S: PrecompileStorageProvider,

Enter storage context. All storage operations must happen within the closure.

§IMPORTANT

The caller must ensure that:

  1. Only one enter call is active at a time, in the same thread.
  2. If multiple storage providers are instantiated in parallel threads, they CANNOT point to the same storage addresses.
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fn with_storage<F, R>(f: F) -> R
where F: FnOnce(&mut dyn PrecompileStorageProvider) -> R,

Execute an infallible function with access to the current thread-local storage provider.

§Panics

Panics if no storage context is set.

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fn try_with_storage<F, R>(f: F) -> Result<R>
where F: FnOnce(&mut dyn PrecompileStorageProvider) -> Result<R>,

Execute a (fallible) function with access to the current thread-local storage provider.

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pub fn with_account_info<T>( &self, address: Address, f: impl FnMut(&AccountInfo) -> Result<T>, ) -> Result<T>

Executes a closure with access to the account info, returning the closure’s result.

This is an ergonomic wrapper that flattens the Result, avoiding double ?.

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pub fn chain_id(&self) -> u64

Returns the chain ID.

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pub fn timestamp(&self) -> U256

Returns the current block timestamp.

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pub fn beneficiary(&self) -> Address

Returns the current block beneficiary (coinbase).

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pub fn block_number(&self) -> u64

Returns the current block number.

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pub fn set_code(&mut self, address: Address, code: Bytecode) -> Result<()>

Sets the bytecode at the given address.

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pub fn sload(&self, address: Address, key: U256) -> Result<U256>

Performs an SLOAD operation (persistent storage read).

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pub fn tload(&self, address: Address, key: U256) -> Result<U256>

Performs a TLOAD operation (transient storage read).

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pub fn sstore(&mut self, address: Address, key: U256, value: U256) -> Result<()>

Performs an SSTORE operation (persistent storage write).

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pub fn tstore(&mut self, address: Address, key: U256, value: U256) -> Result<()>

Performs a TSTORE operation (transient storage write).

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pub fn emit_event(&mut self, address: Address, event: LogData) -> Result<()>

Emits an event from the given contract address.

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pub fn refund_gas(&mut self, gas: i64)

Adds refund to the gas refund counter.

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pub fn gas_used(&self) -> u64

Returns the gas used so far.

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pub fn gas_refunded(&self) -> i64

Returns the gas refunded so far.

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pub fn spec(&self) -> TempoHardfork

Returns the currently active hardfork.

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pub fn is_static(&self) -> bool

Returns whether the current call context is static.

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pub fn checkpoint(&mut self) -> CheckpointGuard

Creates a journal checkpoint and returns a RAII guard.

All state mutations after this call will be atomically reverted if the guard is dropped without calling CheckpointGuard::commit.

§Panics

Panics if no storage context is set.

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pub fn deduct_gas(&mut self, gas: u64) -> Result<()>

Deducts gas from the remaining gas and returns an error if insufficient.

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pub fn keccak256(&self, data: &[u8]) -> Result<B256>

Computes keccak256 and charges the appropriate gas.

Prefer this over naked keccak256 to ensure gas is accounted for.

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pub fn recover_signer( &self, digest: B256, v: u8, r: B256, s: B256, ) -> Result<Option<Address>>

Recovers the signer address from an ECDSA signature and charges ecrecover gas. As per TIP-1004, it only accepts v values of 27 or 28 (no 0/1 normalization).

Returns Ok(None) on invalid signatures; callers map to domain-specific errors.

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impl<'evm> StorageCtx

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pub fn enter_evm<J, R>( journal: &'evm mut J, block_env: &'evm dyn Block, cfg: &CfgEnv<TempoHardfork>, tx_env: &'evm impl Transaction, f: impl FnOnce() -> R, ) -> R
where J: JournalTr<Database: Database> + Debug,

Generic entry point for EVM-like environments. Sets up the storage provider and executes a closure within that context.

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pub fn enter_precompile<J, P, R>( journal: &'evm mut J, block_env: &'evm dyn Block, cfg: &CfgEnv<TempoHardfork>, tx_env: &'evm impl Transaction, f: impl FnOnce(P) -> R, ) -> R
where J: JournalTr<Database: Database> + Debug, P: Precompile + Default,

Entry point for a “canonical” precompile (with unique known address).

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impl StorageCtx

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fn as_hashmap(&self) -> &mut HashMapStorageProvider

Available on crate features test-utils only.

Returns a mutable reference to the underlying HashMapStorageProvider.

NOTE: takes a non-mutable reference because it’s internal. The mutability of the storage operation is determined by the public function.

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pub fn get_account_info(&self, address: Address) -> Option<&AccountInfo>

Available on crate features test-utils only.

NOTE: assumes storage tests always use the HashMapStorageProvider

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pub fn get_events(&self, address: Address) -> &Vec<LogData>

Available on crate features test-utils only.

NOTE: assumes storage tests always use the HashMapStorageProvider

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pub fn set_nonce(&mut self, address: Address, nonce: u64)

Available on crate features test-utils only.

NOTE: assumes storage tests always use the HashMapStorageProvider

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pub fn set_timestamp(&mut self, timestamp: U256)

Available on crate features test-utils only.

NOTE: assumes storage tests always use the HashMapStorageProvider

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pub fn set_beneficiary(&mut self, beneficiary: Address)

Available on crate features test-utils only.

NOTE: assumes storage tests always use the HashMapStorageProvider

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pub fn set_block_number(&mut self, block_number: u64)

Available on crate features test-utils only.

NOTE: assumes storage tests always use the HashMapStorageProvider

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pub fn set_spec(&mut self, spec: TempoHardfork)

Available on crate features test-utils only.

NOTE: assumes storage tests always use the HashMapStorageProvider

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pub fn clear_transient(&mut self)

Available on crate features test-utils only.

NOTE: assumes storage tests always use the HashMapStorageProvider

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pub fn clear_events(&mut self, address: Address)

Available on crate features test-utils only.

NOTE: assumes storage tests always use the HashMapStorageProvider

USAGE: TIP20Setup automatically clears events of the configured contract when apply() is called, unless explicitly asked no to.

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pub fn has_bytecode(&self, address: Address) -> Result<bool>

Available on crate features test-utils only.

Checks if a contract at the given address has bytecode deployed.

Trait Implementations§

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impl Clone for StorageCtx

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fn clone(&self) -> StorageCtx

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

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

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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 Default for StorageCtx

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fn default() -> StorageCtx

Returns the “default value” for a type. Read more
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impl Copy for StorageCtx

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impl<TxEnv, T> FromRecoveredTx<&T> for TxEnv
where TxEnv: FromRecoveredTx<T>,

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fn from_recovered_tx(tx: &&T, sender: Address) -> TxEnv

Builds a [TxEnv] from a transaction and a sender address.
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impl<TxEnv, T> FromTxWithEncoded<&T> for TxEnv
where TxEnv: FromTxWithEncoded<T>,

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fn from_encoded_tx(tx: &&T, sender: Address, encoded: Bytes) -> TxEnv

Builds a [TxEnv] from a transaction, its sender, and encoded transaction bytes.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeDebug for T
where T: Debug,

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Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

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