Module utils

Various utilities

Re-exports

pub use rlp;

pub use hex;

Modules

moonbeam

Moonbeam utils Moonbeam utilities

Structs

AnvilNon-WebAssembly

Builder for launching anvil.

AnvilInstanceNon-WebAssembly

An anvil CLI instance. Will close the instance when dropped.

ChainConfig

Represents a node’s chain configuration.

CliqueConfig

Consensus configuration for Clique.

EthashConfig

Empty consensus configuration for proof-of-work networks.

GanacheNon-WebAssembly

Builder for launching ganache-cli.

GanacheInstanceNon-WebAssembly

A ganache CLI instance. Will close the instance when dropped.

Genesis

This represents the chain configuration, specifying the genesis block, header fields, and hard fork switch blocks.

GenesisAccount

An account in the state of the genesis block.

GethNon-WebAssembly

Builder for launching geth.

GethInstanceNon-WebAssembly

A geth instance. Will close the instance when dropped.

Enums

ConversionError

ParseUnits

This enum holds the numeric types that a possible to be returned by parse_units and that are taken by format_units.

Units

Common Ethereum unit types.

Constants

EIP1559_FEE_ESTIMATION_DEFAULT_PRIORITY_FEE

The default max priority fee per gas, used in case the base fee is within a threshold.

EIP1559_FEE_ESTIMATION_PAST_BLOCKS

The number of blocks from the past for which the fee rewards are fetched for fee estimation.

EIP1559_FEE_ESTIMATION_PRIORITY_FEE_TRIGGER

The threshold for base fee below which we use the default priority fee, and beyond which we estimate an appropriate value for priority fee.

EIP1559_FEE_ESTIMATION_REWARD_PERCENTILE

The default percentile of gas premiums that are fetched for fee estimation.

EIP1559_FEE_ESTIMATION_THRESHOLD_MAX_CHANGE

The threshold max change/difference (in %) at which we will ignore the fee history values under it.

WEI_IN_ETHER

1 Ether = 1e18 Wei == 0x0de0b6b3a7640000 Wei

Functions

eip1559_default_estimator

The default EIP-1559 fee estimator which is based on the work by MyCrypto

format_bytes32_string

Returns a bytes32 string representation of text. If the length of text exceeds 32 bytes, an error is returned.

format_ether

Format the output for the user which prefer to see values in ether (instead of wei)

format_units

Divides the provided amount with 10^{units} provided.

from_bytes_to_h256

Converts a Bytes value into a H256, accepting inputs that are less than 32 bytes long. These inputs will be left padded with zeros.

from_unformatted_hex_map

Deserializes the input into an Option<HashMap<H256, H256>>, using from_unformatted_hex to deserialize the keys and values.

get_contract_address

The address for an Ethereum contract is deterministically computed from the address of its creator (sender) and how many transactions the creator has sent (nonce). The sender and nonce are RLP encoded and then hashed with Keccak-256.

get_create2_address

Returns the CREATE2 address of a smart contract as specified in EIP1014

get_create2_address_from_hash

Returns the CREATE2 address of a smart contract as specified in EIP1014, taking the pre-computed hash of the init code as input.

hash_message

Hash a message according to EIP-191 (version 0x01).

id

Calculate the function selector as per the contract ABI specification. This is defined as the first 4 bytes of the Keccak256 hash of the function signature.

keccak256

Compute the Keccak-256 hash of input bytes.

parse_bytes32_string

Returns the decoded string represented by the bytes32 encoded data.

parse_checksummed

Parses an EIP-1191 checksum address.

parse_ether

Converts the input to a U256 and converts from Ether to Wei.

parse_units

Multiplies the provided amount with 10^{units} provided.

public_key_to_address

Converts an public key, in compressed or uncompressed form to an Ethereum address

raw_public_key_to_address

Convert a raw, uncompressed public key to an address.

secret_key_to_address

Converts a K256 SigningKey to an Ethereum Address

serialize

Serialize a type.

to_checksum

Encodes an Ethereum address to its EIP-55 checksum.