pub trait Current {
Show 51 methods // Required methods fn reentrance_count() -> Result<u32, TrapReason>; fn contains_storage(key_ptr: u32, key_len: u32) -> Result<u32, TrapReason>; fn tombstone_deposit( out_ptr: u32, out_len_ptr: u32 ) -> Result<(), TrapReason>; fn delegate_call( flags: u32, code_hash_ptr: u32, input_data_ptr: u32, input_data_len: u32, output_ptr: u32, output_len_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>; fn now(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>; fn set_storage( key_ptr: u32, key_len: u32, value_ptr: u32, value_len: u32 ) -> Result<u32, TrapReason>; fn clear_storage(key_ptr: u32, key_len: u32) -> Result<u32, TrapReason>; fn hash_keccak_256( input_ptr: u32, input_len: u32, output_ptr: u32 ) -> Result<(), TrapReason>; fn caller(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>; fn set_rent_allowance(_value_ptr: u32) -> Result<(), TrapReason>; fn call_chain_extension( id: u32, input_ptr: u32, input_len: u32, output_ptr: u32, output_len_ptr: u32 ) -> Result<u32, TrapReason>; fn instantiate( code_hash_ptr: u32, ref_time_limit: u64, proof_size_limit: u64, deposit_ptr: u32, value_ptr: u32, input_data_ptr: u32, input_data_len: u32, address_ptr: u32, address_len_ptr: u32, output_ptr: u32, output_len_ptr: u32, salt_ptr: u32, salt_len: u32 ) -> Result<ReturnErrorCode, TrapReason>; fn terminate(beneficiary_ptr: u32) -> Result<(), TrapReason>; fn ecdsa_recover( signature_ptr: u32, message_hash_ptr: u32, output_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>; fn minimum_balance(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>; fn debug_message( str_ptr: u32, str_len: u32 ) -> Result<ReturnErrorCode, TrapReason>; fn call_runtime( call_ptr: u32, call_len: u32 ) -> Result<ReturnErrorCode, TrapReason>; fn instantiation_nonce() -> Result<u64, TrapReason>; fn take_storage( key_ptr: u32, key_len: u32, out_ptr: u32, out_len_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>; fn input(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>; fn address(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>; fn get_storage( key_ptr: u32, key_len: u32, out_ptr: u32, out_len_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>; fn caller_is_origin() -> Result<u32, TrapReason>; fn hash_sha2_256( input_ptr: u32, input_len: u32, output_ptr: u32 ) -> Result<(), TrapReason>; fn set_code_hash(code_hash_ptr: u32) -> Result<ReturnErrorCode, TrapReason>; fn balance(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>; fn is_contract(account_ptr: u32) -> Result<u32, TrapReason>; fn call( flags: u32, callee_ptr: u32, ref_time_limit: u64, proof_size_limit: u64, deposit_ptr: u32, value_ptr: u32, input_data_ptr: u32, input_data_len: u32, output_ptr: u32, output_len_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>; fn transfer( account_ptr: u32, _account_len: u32, value_ptr: u32, _value_len: u32 ) -> Result<ReturnErrorCode, TrapReason>; fn account_reentrance_count(account_ptr: u32) -> Result<u32, TrapReason>; fn deposit_event( topics_ptr: u32, topics_len: u32, data_ptr: u32, data_len: u32 ) -> Result<(), TrapReason>; fn restore_to( _dest_ptr: u32, _code_hash_ptr: u32, _rent_allowance_ptr: u32, _delta_ptr: u32, _delta_count: u32 ) -> Result<(), TrapReason>; fn noop() -> Result<(), TrapReason>; fn code_hash( account_ptr: u32, out_ptr: u32, out_len_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>; fn value_transferred( out_ptr: u32, out_len_ptr: u32 ) -> Result<(), TrapReason>; fn hash_blake2_256( input_ptr: u32, input_len: u32, output_ptr: u32 ) -> Result<(), TrapReason>; fn lock_delegate_dependency(code_hash_ptr: u32) -> Result<(), TrapReason>; fn unlock_delegate_dependency(code_hash_ptr: u32) -> Result<(), TrapReason>; fn gas_left(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>; fn hash_blake2_128( input_ptr: u32, input_len: u32, output_ptr: u32 ) -> Result<(), TrapReason>; fn ecdsa_to_eth_address( key_ptr: u32, out_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>; fn sr25519_verify( signature_ptr: u32, pub_key_ptr: u32, message_len: u32, message_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>; fn own_code_hash(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>; fn caller_is_root() -> Result<u32, TrapReason>; fn random( subject_ptr: u32, subject_len: u32, out_ptr: u32, out_len_ptr: u32 ) -> Result<(), TrapReason>; fn weight_to_fee( ref_time_limit: u64, proof_size_limit: u64, out_ptr: u32, out_len_ptr: u32 ) -> Result<(), TrapReason>; fn rent_allowance(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>; fn seal_return( flags: u32, data_ptr: u32, data_len: u32 ) -> Result<(), TrapReason>; fn xcm_send( dest_ptr: u32, msg_ptr: u32, msg_len: u32, output_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>; fn block_number(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>; fn xcm_execute( msg_ptr: u32, msg_len: u32 ) -> Result<ReturnErrorCode, TrapReason>;
}
Expand description

Contains only the latest version of each function.

In reality there are more functions available but they are all obsolete: When a function is updated a new version is added and the old versions stays available as-is. We only list the newest version here. Some functions are available under additional names (aliases) for historic reasons which are omitted here.

If you want an overview of all the functions available to a contact all you need to look at is this trait. It contains only the latest version of each function and no aliases. If you are writing a contract(language) from scratch this is where you should look at.

Required Methods§

source

fn reentrance_count() -> Result<u32, TrapReason>

Returns the number of times the currently executing contract exists on the call stack in addition to the calling instance. See [pallet_contracts_uapi::HostFn::reentrance_count].

§Wasm Import Statement
(import "seal0" "reentrance_count" (func ...))
§Unstable

This function is unstable and it is a subject to change (or removal) in the future. Do not deploy a contract using it to a production chain.

source

fn contains_storage(key_ptr: u32, key_len: u32) -> Result<u32, TrapReason>

Checks whether there is a value stored under the given key. See [pallet_contracts_uapi::HostFn::contains_storage_v1]

§Wasm Import Statement
(import "seal1" "contains_storage" (func ...))
source

fn tombstone_deposit(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>

§Deprecated

This function is deprecated and will be removed in future versions. No new code or contracts with this API can be deployed. Stores the tombstone deposit into the supplied buffer.

The value is stored to linear memory at the address pointed to by out_ptr. out_len_ptr must point to a u32 value that describes the available space at out_ptr. This call overwrites it with the size of the value. If the available space at out_ptr is less than the size of the value a trap is triggered.

§Note

There is no longer a tombstone deposit. This function always returns 0.

§Wasm Import Statement
(import "seal0" "tombstone_deposit" (func ...))
source

fn delegate_call( flags: u32, code_hash_ptr: u32, input_data_ptr: u32, input_data_len: u32, output_ptr: u32, output_len_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>

Execute code in the context (storage, caller, value) of the current contract. See [pallet_contracts_uapi::HostFn::delegate_call].

§Wasm Import Statement
(import "seal0" "delegate_call" (func ...))
source

fn now(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>

Load the latest block timestamp into the supplied buffer See [pallet_contracts_uapi::HostFn::now].

§Wasm Import Statement
(import "seal0" "now" (func ...))
source

fn set_storage( key_ptr: u32, key_len: u32, value_ptr: u32, value_len: u32 ) -> Result<u32, TrapReason>

Set the value at the given key in the contract storage. See [pallet_contracts_uapi::HostFn::set_storage_v2]

§Wasm Import Statement
(import "seal2" "set_storage" (func ...))
source

fn clear_storage(key_ptr: u32, key_len: u32) -> Result<u32, TrapReason>

Clear the value at the given key in the contract storage. See [pallet_contracts_uapi::HostFn::clear_storage_v1]

§Wasm Import Statement
(import "seal1" "clear_storage" (func ...))
source

fn hash_keccak_256( input_ptr: u32, input_len: u32, output_ptr: u32 ) -> Result<(), TrapReason>

Computes the KECCAK 256-bit hash on the given input buffer. See [pallet_contracts_uapi::HostFn::hash_keccak_256].

§Wasm Import Statement
(import "seal0" "hash_keccak_256" (func ...))
source

fn caller(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>

Stores the address of the caller into the supplied buffer. See [pallet_contracts_uapi::HostFn::caller].

§Wasm Import Statement
(import "seal0" "caller" (func ...))
source

fn set_rent_allowance(_value_ptr: u32) -> Result<(), TrapReason>

§Deprecated

This function is deprecated and will be removed in future versions. No new code or contracts with this API can be deployed. Was used to set rent allowance of the contract.

§Note

The state rent functionality was removed. This is stub only exists for backwards compatibility.

§Wasm Import Statement
(import "seal1" "set_rent_allowance" (func ...))
source

fn call_chain_extension( id: u32, input_ptr: u32, input_len: u32, output_ptr: u32, output_len_ptr: u32 ) -> Result<u32, TrapReason>

Call into the chain extension provided by the chain if any. See [pallet_contracts_uapi::HostFn::call_chain_extension].

§Wasm Import Statement
(import "seal0" "call_chain_extension" (func ...))
source

fn instantiate( code_hash_ptr: u32, ref_time_limit: u64, proof_size_limit: u64, deposit_ptr: u32, value_ptr: u32, input_data_ptr: u32, input_data_len: u32, address_ptr: u32, address_len_ptr: u32, output_ptr: u32, output_len_ptr: u32, salt_ptr: u32, salt_len: u32 ) -> Result<ReturnErrorCode, TrapReason>

Instantiate a contract with the specified code hash. See [pallet_contracts_uapi::HostFn::instantiate_v2].

§Wasm Import Statement
(import "seal2" "instantiate" (func ...))
source

fn terminate(beneficiary_ptr: u32) -> Result<(), TrapReason>

Remove the calling account and transfer remaining free balance. See [pallet_contracts_uapi::HostFn::terminate_v1].

§Wasm Import Statement
(import "seal1" "terminate" (func ...))
source

fn ecdsa_recover( signature_ptr: u32, message_hash_ptr: u32, output_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>

Recovers the ECDSA public key from the given message hash and signature. See [pallet_contracts_uapi::HostFn::ecdsa_recover].

§Wasm Import Statement
(import "seal0" "ecdsa_recover" (func ...))
source

fn minimum_balance(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>

Stores the minimum balance (a.k.a. existential deposit) into the supplied buffer. See [pallet_contracts_uapi::HostFn::minimum_balance].

§Wasm Import Statement
(import "seal0" "minimum_balance" (func ...))
source

fn debug_message( str_ptr: u32, str_len: u32 ) -> Result<ReturnErrorCode, TrapReason>

Emit a custom debug message.

No newlines are added to the supplied message. Specifying invalid UTF-8 just drops the message with no trap.

This is a no-op if debug message recording is disabled which is always the case when the code is executing on-chain. The message is interpreted as UTF-8 and appended to the debug buffer which is then supplied to the calling RPC client.

§Note

Even though no action is taken when debug message recording is disabled there is still a non trivial overhead (and weight cost) associated with calling this function. Contract languages should remove calls to this function (either at runtime or compile time) when not being executed as an RPC. For example, they could allow users to disable logging through compile time flags (cargo features) for on-chain deployment. Additionally, the return value of this function can be cached in order to prevent further calls at runtime.

§Wasm Import Statement
(import "seal0" "debug_message" (func ...))
source

fn call_runtime( call_ptr: u32, call_len: u32 ) -> Result<ReturnErrorCode, TrapReason>

Call some dispatchable of the runtime. See [frame_support::traits::call_runtime].

§Wasm Import Statement
(import "seal0" "call_runtime" (func ...))
source

fn instantiation_nonce() -> Result<u64, TrapReason>

Returns a nonce that is unique per contract instantiation. See [pallet_contracts_uapi::HostFn::instantiation_nonce].

§Wasm Import Statement
(import "seal0" "instantiation_nonce" (func ...))
source

fn take_storage( key_ptr: u32, key_len: u32, out_ptr: u32, out_len_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>

Retrieve and remove the value under the given key from storage. See [pallet_contracts_uapi::HostFn::take_storage]

§Wasm Import Statement
(import "seal0" "take_storage" (func ...))
source

fn input(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>

Stores the input passed by the caller into the supplied buffer. See [pallet_contracts_uapi::HostFn::input].

§Wasm Import Statement
(import "seal0" "input" (func ...))
source

fn address(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>

Stores the address of the current contract into the supplied buffer. See [pallet_contracts_uapi::HostFn::address].

§Wasm Import Statement
(import "seal0" "address" (func ...))
source

fn get_storage( key_ptr: u32, key_len: u32, out_ptr: u32, out_len_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>

Retrieve the value under the given key from storage. See [pallet_contracts_uapi::HostFn::get_storage_v1]

§Wasm Import Statement
(import "seal1" "get_storage" (func ...))
source

fn caller_is_origin() -> Result<u32, TrapReason>

Checks whether the caller of the current contract is the origin of the whole call stack. See [pallet_contracts_uapi::HostFn::caller_is_origin].

§Wasm Import Statement
(import "seal0" "caller_is_origin" (func ...))
source

fn hash_sha2_256( input_ptr: u32, input_len: u32, output_ptr: u32 ) -> Result<(), TrapReason>

Computes the SHA2 256-bit hash on the given input buffer. See [pallet_contracts_uapi::HostFn::hash_sha2_256].

§Wasm Import Statement
(import "seal0" "hash_sha2_256" (func ...))
source

fn set_code_hash(code_hash_ptr: u32) -> Result<ReturnErrorCode, TrapReason>

Replace the contract code at the specified address with new code. See [pallet_contracts_uapi::HostFn::set_code_hash].

§Wasm Import Statement
(import "seal0" "set_code_hash" (func ...))
source

fn balance(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>

Stores the free balance of the current account into the supplied buffer. See [pallet_contracts_uapi::HostFn::balance].

§Wasm Import Statement
(import "seal0" "balance" (func ...))
source

fn is_contract(account_ptr: u32) -> Result<u32, TrapReason>

Checks whether a specified address belongs to a contract. See [pallet_contracts_uapi::HostFn::is_contract].

§Wasm Import Statement
(import "seal0" "is_contract" (func ...))
source

fn call( flags: u32, callee_ptr: u32, ref_time_limit: u64, proof_size_limit: u64, deposit_ptr: u32, value_ptr: u32, input_data_ptr: u32, input_data_len: u32, output_ptr: u32, output_len_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>

Make a call to another contract. See [pallet_contracts_uapi::HostFn::call_v2].

§Wasm Import Statement
(import "seal2" "call" (func ...))
source

fn transfer( account_ptr: u32, _account_len: u32, value_ptr: u32, _value_len: u32 ) -> Result<ReturnErrorCode, TrapReason>

Transfer some value to another account. See [pallet_contracts_uapi::HostFn::transfer].

§Wasm Import Statement
(import "seal0" "transfer" (func ...))
source

fn account_reentrance_count(account_ptr: u32) -> Result<u32, TrapReason>

Returns the number of times specified contract exists on the call stack. Delegated calls are not counted as separate calls. See [pallet_contracts_uapi::HostFn::account_reentrance_count].

§Wasm Import Statement
(import "seal0" "account_reentrance_count" (func ...))
§Unstable

This function is unstable and it is a subject to change (or removal) in the future. Do not deploy a contract using it to a production chain.

source

fn deposit_event( topics_ptr: u32, topics_len: u32, data_ptr: u32, data_len: u32 ) -> Result<(), TrapReason>

Deposit a contract event with the data buffer and optional list of topics. See [pallet_contracts_uapi::HostFn::deposit_event]

§Wasm Import Statement
(import "seal0" "deposit_event" (func ...))
source

fn restore_to( _dest_ptr: u32, _code_hash_ptr: u32, _rent_allowance_ptr: u32, _delta_ptr: u32, _delta_count: u32 ) -> Result<(), TrapReason>

§Deprecated

This function is deprecated and will be removed in future versions. No new code or contracts with this API can be deployed. Was used to restore the given destination contract sacrificing the caller.

§Note

The state rent functionality was removed. This is stub only exists for backwards compatibility

§Wasm Import Statement
(import "seal1" "restore_to" (func ...))
source

fn noop() -> Result<(), TrapReason>

Noop function used to benchmark the time it takes to execute an empty function.

§Wasm Import Statement
(import "seal0" "noop" (func ...))
§Unstable

This function is unstable and it is a subject to change (or removal) in the future. Do not deploy a contract using it to a production chain.

source

fn code_hash( account_ptr: u32, out_ptr: u32, out_len_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>

Retrieve the code hash for a specified contract address. See [pallet_contracts_uapi::HostFn::code_hash].

§Wasm Import Statement
(import "seal0" "code_hash" (func ...))
source

fn value_transferred(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>

Stores the value transferred along with this call/instantiate into the supplied buffer. See [pallet_contracts_uapi::HostFn::value_transferred].

§Wasm Import Statement
(import "seal0" "value_transferred" (func ...))
source

fn hash_blake2_256( input_ptr: u32, input_len: u32, output_ptr: u32 ) -> Result<(), TrapReason>

Computes the BLAKE2 256-bit hash on the given input buffer. See [pallet_contracts_uapi::HostFn::hash_blake2_256].

§Wasm Import Statement
(import "seal0" "hash_blake2_256" (func ...))
source

fn lock_delegate_dependency(code_hash_ptr: u32) -> Result<(), TrapReason>

Adds a new delegate dependency to the contract. See [pallet_contracts_uapi::HostFn::lock_delegate_dependency].

§Wasm Import Statement
(import "seal0" "lock_delegate_dependency" (func ...))
source

fn unlock_delegate_dependency(code_hash_ptr: u32) -> Result<(), TrapReason>

Removes the delegate dependency from the contract. see [pallet_contracts_uapi::HostFn::unlock_delegate_dependency].

§Wasm Import Statement
(import "seal0" "unlock_delegate_dependency" (func ...))
source

fn gas_left(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>

Stores the amount of weight left into the supplied buffer. See [pallet_contracts_uapi::HostFn::gas_left_v1].

§Wasm Import Statement
(import "seal1" "gas_left" (func ...))
§Unstable

This function is unstable and it is a subject to change (or removal) in the future. Do not deploy a contract using it to a production chain.

source

fn hash_blake2_128( input_ptr: u32, input_len: u32, output_ptr: u32 ) -> Result<(), TrapReason>

Computes the BLAKE2 128-bit hash on the given input buffer. See [pallet_contracts_uapi::HostFn::hash_blake2_128].

§Wasm Import Statement
(import "seal0" "hash_blake2_128" (func ...))
source

fn ecdsa_to_eth_address( key_ptr: u32, out_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>

Calculates Ethereum address from the ECDSA compressed public key and stores See [pallet_contracts_uapi::HostFn::ecdsa_to_eth_address].

§Wasm Import Statement
(import "seal0" "ecdsa_to_eth_address" (func ...))
source

fn sr25519_verify( signature_ptr: u32, pub_key_ptr: u32, message_len: u32, message_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>

Verify a sr25519 signature See [pallet_contracts_uapi::HostFn::sr25519_verify].

§Wasm Import Statement
(import "seal0" "sr25519_verify" (func ...))
source

fn own_code_hash(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>

Retrieve the code hash of the currently executing contract. See [pallet_contracts_uapi::HostFn::own_code_hash].

§Wasm Import Statement
(import "seal0" "own_code_hash" (func ...))
source

fn caller_is_root() -> Result<u32, TrapReason>

Checks whether the caller of the current contract is root. See [pallet_contracts_uapi::HostFn::caller_is_root].

§Wasm Import Statement
(import "seal0" "caller_is_root" (func ...))
source

fn random( subject_ptr: u32, subject_len: u32, out_ptr: u32, out_len_ptr: u32 ) -> Result<(), TrapReason>

§Deprecated

This function is deprecated and will be removed in future versions. No new code or contracts with this API can be deployed. Stores a random number for the current block and the given subject into the supplied buffer.

The value is stored to linear memory at the address pointed to by out_ptr. out_len_ptr must point to a u32 value that describes the available space at out_ptr. This call overwrites it with the size of the value. If the available space at out_ptr is less than the size of the value a trap is triggered.

The data is encoded as (T::Hash, frame_system::pallet_prelude::BlockNumberFor::).

§Changes from v0

In addition to the seed it returns the block number since which it was determinable by chain observers.

§Note

The returned seed should only be used to distinguish commitments made before the returned block number. If the block number is too early (i.e. commitments were made afterwards), then ensure no further commitments may be made and repeatedly call this on later blocks until the block number returned is later than the latest commitment.

§Wasm Import Statement
(import "seal1" "random" (func ...))
source

fn weight_to_fee( ref_time_limit: u64, proof_size_limit: u64, out_ptr: u32, out_len_ptr: u32 ) -> Result<(), TrapReason>

Stores the price for the specified amount of weight into the supplied buffer. See [pallet_contracts_uapi::HostFn::weight_to_fee_v1].

§Wasm Import Statement
(import "seal1" "weight_to_fee" (func ...))
§Unstable

This function is unstable and it is a subject to change (or removal) in the future. Do not deploy a contract using it to a production chain.

source

fn rent_allowance(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>

§Deprecated

This function is deprecated and will be removed in future versions. No new code or contracts with this API can be deployed. Was used to store the rent allowance into the supplied buffer.

§Note

The state rent functionality was removed. This is stub only exists for backwards compatibility.

§Wasm Import Statement
(import "seal0" "rent_allowance" (func ...))
source

fn seal_return( flags: u32, data_ptr: u32, data_len: u32 ) -> Result<(), TrapReason>

Cease contract execution and save a data buffer as a result of the execution. See [pallet_contracts_uapi::HostFn::return_value].

§Wasm Import Statement
(import "seal0" "seal_return" (func ...))
source

fn xcm_send( dest_ptr: u32, msg_ptr: u32, msg_len: u32, output_ptr: u32 ) -> Result<ReturnErrorCode, TrapReason>

Send an XCM program from the contract to the specified destination. See [pallet_contracts_uapi::HostFn::send_xcm].

§Wasm Import Statement
(import "seal0" "xcm_send" (func ...))
source

fn block_number(out_ptr: u32, out_len_ptr: u32) -> Result<(), TrapReason>

Stores the current block number of the current contract into the supplied buffer. See [pallet_contracts_uapi::HostFn::block_number].

§Wasm Import Statement
(import "seal0" "block_number" (func ...))
source

fn xcm_execute( msg_ptr: u32, msg_len: u32 ) -> Result<ReturnErrorCode, TrapReason>

Execute an XCM program locally, using the contract’s address as the origin. See [pallet_contracts_uapi::HostFn::execute_xcm].

§Wasm Import Statement
(import "seal0" "xcm_execute" (func ...))

Object Safety§

This trait is not object safe.

Implementors§