Crate pro_env

The pro_env utilities used to interoperate with the contract executor.

Mainly provides entities to work on a contract's storage as well as high-level collections on top of those. Also provides environmental utilities, such as storage allocators, FFI to interface with SRML contracts and a primitive blockchain emulator for simple off-chain testing.

Modules

call	Utilities to call or instantiate contracts on the chain.
chain_extension	Definitions and utilities for calling chain extension methods.
hash	Provides type definitions and traits for the built-in cryptographic hashes.
test	Operations on the off-chain testing environment.

Structs

AccountId	The default environment AccountId type.
Hash	The default environment Hash type.
ReturnFlags	The flags to indicate further information about the end of a contract execution.

Enums

DefaultEnvironment	The fundamental types of the default configuration.
Error	Errors that can be encountered upon environmental interaction.
NoChainExtension	Placeholder for chains that have no defined chain extension.

Traits

Clear	The equivalent of Zero for hashes.
Environment	The environmental types usable by contracts defined with pro!.
Topics	Implemented by event types to guide the event topic serialization using the topics builder.

Functions

account_id	Returns the account ID of the executed contract.
balance	Returns the balance of the executed contract.
block_number	Returns the current block number.
block_timestamp	Returns the current block timestamp.
caller	Returns the address of the caller of the executed contract.
clear_contract_storage	Clears the contract's storage key entry.
debug_println	Prints the given contents to the environmental log.
decode_input	Returns the execution input to the executed contract and decodes it as T.
emit_event	Emits an event with the given event data.
eval_contract	Evaluates a contract message and returns its result.
gas_left	Returns the amount of gas left for the contract execution.
get_contract_storage	Returns the value stored under the given key in the contract's storage if any.
hash_bytes	Conducts the crypto hash of the given input and stores the result in output.
hash_encoded	Conducts the crypto hash of the given encoded input and stores the result in output.
instantiate_contract	Instantiates another contract.
invoke_contract	Invokes a contract message.
minimum_balance	Returns the minimum balance that is required for creating an account.
random	Returns a random hash seed.
rent_allowance	Returns the current rent allowance for the executed contract.
restore_contract	Restores a smart contract in tombstone state.
return_value	Returns the value back to the caller of the executed contract.
set_contract_storage	Writes the value to the contract storage under the given key.
set_rent_allowance	Sets the rent allowance of the executed contract to the new value.
terminate_contract	Terminates the existence of the currently executed smart contract.
tombstone_deposit	Returns the tombstone deposit for the contracts chain.
transfer	Transfers value from the contract to the destination account ID.
transferred_balance	Returns the transferred balance for the contract execution.
weight_to_fee	Returns the price for the specified amount of gas.

Type Definitions

Result

A result of environmental operations.