Enum HostFnImpl

pub enum HostFnImpl {}

Implements HostFn for each supported target architecture.

Trait Implementations

impl HostFn for HostFnImpl

fn instantiate_v1( code_hash: &[u8], gas: u64, value: &[u8], input: &[u8], address: Option<&mut &mut [u8]>, output: Option<&mut &mut [u8]>, salt: &[u8], ) -> Result<(), ReturnErrorCode>

👎Deprecated: Deprecated, use newer version instead

Instantiate a contract with the specified code hash.

fn instantiate_v2( code_hash: &[u8], ref_time_limit: u64, proof_size_limit: u64, deposit: Option<&[u8]>, value: &[u8], input: &[u8], address: Option<&mut &mut [u8]>, output: Option<&mut &mut [u8]>, salt: &[u8], ) -> Result<(), ReturnErrorCode>

Instantiate a contract with the specified code hash.

fn call( callee: &[u8], gas: u64, value: &[u8], input_data: &[u8], output: Option<&mut &mut [u8]>, ) -> Result<(), ReturnErrorCode>

👎Deprecated: Deprecated, use newer version instead

Make a call to another contract.

fn call_v1( flags: CallFlags, callee: &[u8], gas: u64, value: &[u8], input_data: &[u8], output: Option<&mut &mut [u8]>, ) -> Result<(), ReturnErrorCode>

👎Deprecated: Deprecated, use newer version instead

Make a call to another contract.

fn call_v2( flags: CallFlags, callee: &[u8], ref_time_limit: u64, proof_size_limit: u64, deposit: Option<&[u8]>, value: &[u8], input_data: &[u8], output: Option<&mut &mut [u8]>, ) -> Result<(), ReturnErrorCode>

Call (possibly transferring some amount of funds) into the specified account.

fn caller_is_root() -> u32

Checks whether the caller of the current contract is root.

fn delegate_call( flags: CallFlags, code_hash: &[u8], input: &[u8], output: Option<&mut &mut [u8]>, ) -> Result<(), ReturnErrorCode>

Execute code in the context (storage, caller, value) of the current contract.

fn transfer(account_id: &[u8], value: &[u8]) -> Result<(), ReturnErrorCode>

Transfer some amount of funds into the specified account.

fn deposit_event(topics: &[u8], data: &[u8])

Deposit a contract event with the data buffer and optional list of topics. There is a limit on the maximum number of topics specified by event_topics.

fn set_storage(key: &[u8], value: &[u8])

Set the value at the given key in the contract storage.

fn set_storage_v1(key: &[u8], encoded_value: &[u8]) -> Option<u32>

Set the value at the given key in the contract storage.

fn set_storage_v2(key: &[u8], encoded_value: &[u8]) -> Option<u32>

Set the value at the given key in the contract storage.

fn set_transient_storage(key: &[u8], encoded_value: &[u8]) -> Option<u32>

👎Deprecated: Unstable function. Behaviour can change without further notice. Use only for testing.

Set the value at the given key in the contract transient storage.

fn clear_storage(key: &[u8])

Clear the value at the given key in the contract storage.

fn clear_storage_v1(key: &[u8]) -> Option<u32>

Clear the value at the given key in the contract storage.

fn clear_transient_storage(key: &[u8]) -> Option<u32>

👎Deprecated: Unstable function. Behaviour can change without further notice. Use only for testing.

Clear the value at the given key in the contract transient storage.

fn get_storage( key: &[u8], output: &mut &mut [u8], ) -> Result<(), ReturnErrorCode>

Retrieve the value under the given key from storage.

fn get_storage_v1( key: &[u8], output: &mut &mut [u8], ) -> Result<(), ReturnErrorCode>

Retrieve the value under the given key from storage.

fn get_transient_storage( key: &[u8], output: &mut &mut [u8], ) -> Result<(), ReturnErrorCode>

👎Deprecated: Unstable function. Behaviour can change without further notice. Use only for testing.

Retrieve the value under the given key from transient storage.

fn take_storage( key: &[u8], output: &mut &mut [u8], ) -> Result<(), ReturnErrorCode>

Retrieve and remove the value under the given key from storage.

fn take_transient_storage( key: &[u8], output: &mut &mut [u8], ) -> Result<(), ReturnErrorCode>

👎Deprecated: Unstable function. Behaviour can change without further notice. Use only for testing.

Retrieve and remove the value under the given key from transient storage.

fn debug_message(str: &[u8]) -> Result<(), ReturnErrorCode>

Emit a custom debug message.

fn contains_storage(key: &[u8]) -> Option<u32>

Checks whether there is a value stored under the given key.

fn contains_storage_v1(key: &[u8]) -> Option<u32>

Checks whether there is a value stored under the given key.

fn contains_transient_storage(key: &[u8]) -> Option<u32>

👎Deprecated: Unstable function. Behaviour can change without further notice. Use only for testing.

Checks whether there is a value stored under the given key in transient storage.

fn terminate(beneficiary: &[u8]) -> !

👎Deprecated: Deprecated, use newer version instead

Remove the calling account and transfer remaining balance.

fn terminate_v1(beneficiary: &[u8]) -> !

Remove the calling account and transfer remaining free balance.

fn call_chain_extension( func_id: u32, input: &[u8], output: Option<&mut &mut [u8]>, ) -> u32

Call into the chain extension provided by the chain if any.

fn input(output: &mut &mut [u8])

Stores the input passed by the caller into the supplied buffer.

fn return_value(flags: ReturnFlags, return_value: &[u8]) -> !

Cease contract execution and save a data buffer as a result of the execution.

fn call_runtime(call: &[u8]) -> Result<(), ReturnErrorCode>

Call some dispatchable of the runtime.

fn caller(output: &mut &mut [u8])

Stores the address of the caller into the supplied buffer.

fn block_number(output: &mut &mut [u8])

Stores the current block number of the current contract into the supplied buffer.

fn address(output: &mut &mut [u8])

Stores the address of the current contract into the supplied buffer.

fn balance(output: &mut &mut [u8])

Stores the free balance of the current account into the supplied buffer.

fn gas_left(output: &mut &mut [u8])

Stores the weight left into the supplied buffer.

fn value_transferred(output: &mut &mut [u8])

Stores the value transferred along with this call/instantiate into the supplied buffer. The data is encoded as T::Balance.

fn now(output: &mut &mut [u8])

Load the latest block timestamp into the supplied buffer

fn minimum_balance(output: &mut &mut [u8])

Stores the minimum balance (a.k.a. existential deposit) into the supplied buffer. The data is encoded as T::Balance.

fn gas_left_v1(output: &mut &mut [u8])

👎Deprecated: Unstable function. Behaviour can change without further notice. Use only for testing.

Stores the amount of weight left into the supplied buffer. The data is encoded as Weight.

fn weight_to_fee(gas: u64, output: &mut &mut [u8])

Stores the price for the specified amount of gas into the supplied buffer.

fn weight_to_fee_v1( ref_time_limit: u64, proof_size_limit: u64, output: &mut &mut [u8], )

👎Deprecated: Unstable function. Behaviour can change without further notice. Use only for testing.

Stores the price for the specified amount of gas into the supplied buffer. The data is encoded as T::Balance.

fn hash_sha2_256(input: &[u8], output: &mut [u8; 32])

Computes the sha2_256 32-bit hash on the given input buffer.

fn hash_keccak_256(input: &[u8], output: &mut [u8; 32])

Computes the keccak_256 32-bit hash on the given input buffer.

fn hash_blake2_256(input: &[u8], output: &mut [u8; 32])

Computes the blake2_256 32-bit hash on the given input buffer.

fn hash_blake2_128(input: &[u8], output: &mut [u8; 16])

Computes the blake2_128 16-bit hash on the given input buffer.

fn ecdsa_recover( signature: &[u8; 65], message_hash: &[u8; 32], output: &mut [u8; 33], ) -> Result<(), ReturnErrorCode>

Recovers the ECDSA public key from the given message hash and signature.

fn ecdsa_to_eth_address( pubkey: &[u8; 33], output: &mut [u8; 20], ) -> Result<(), ReturnErrorCode>

Calculates Ethereum address from the ECDSA compressed public key and stores it into the supplied buffer.

fn sr25519_verify( signature: &[u8; 64], message: &[u8], pub_key: &[u8; 32], ) -> Result<(), ReturnErrorCode>

Verify a sr25519 signature

fn is_contract(account_id: &[u8]) -> bool

Checks whether a specified address belongs to a contract.

fn caller_is_origin() -> bool

Checks whether the caller of the current contract is the origin of the whole call stack.

fn set_code_hash(code_hash: &[u8]) -> Result<(), ReturnErrorCode>

Replace the contract code at the specified address with new code.

fn code_hash( account_id: &[u8], output: &mut [u8], ) -> Result<(), ReturnErrorCode>

Retrieve the code hash for a specified contract address.

fn own_code_hash(output: &mut [u8])

Retrieve the code hash of the currently executing contract.

fn account_reentrance_count(account: &[u8]) -> u32

👎Deprecated: Unstable function. Behaviour can change without further notice. Use only for testing.

Returns the number of times specified contract exists on the call stack. Delegated calls are not counted as separate calls.

fn lock_delegate_dependency(code_hash: &[u8])

Lock a new delegate dependency to the contract.

fn unlock_delegate_dependency(code_hash: &[u8])

Removes the delegate dependency from the contract.

fn instantiation_nonce() -> u64

Returns a nonce that is unique per contract instantiation.

fn reentrance_count() -> u32

👎Deprecated: Unstable function. Behaviour can change without further notice. Use only for testing.

Returns the number of times the currently executing contract exists on the call stack in addition to the calling instance.

fn xcm_execute(msg: &[u8]) -> Result<(), ReturnErrorCode>

👎Deprecated: Unstable function. Behaviour can change without further notice. Use only for testing.

Execute an XCM program locally, using the contract’s address as the origin. This is equivalent to dispatching pallet_xcm::execute through call_runtime, except that the function is called directly instead of being dispatched.

fn xcm_send( dest: &[u8], msg: &[u8], output: &mut [u8; 32], ) -> Result<(), ReturnErrorCode>

👎Deprecated: Unstable function. Behaviour can change without further notice. Use only for testing.

Send an XCM program from the contract to the specified destination. This is equivalent to dispatching pallet_xcm::send through call_runtime, except that the function is called directly instead of being dispatched.