dart_web3 library Null safety

Classes

AbiType<T>
A type that can be encoded and decoded as specified in the solidity ABI, available at https://solidity.readthedocs.io/en/develop/abi-spec.html
AddressType
Solidity address type
BaseArrayType<T>
Base class for (non-byte) arrays in solidity.
BlockInformation
BlockNum
For operations that are reading data from the blockchain without making a transaction that would modify it, the Ethereum client can read that data from previous states of the blockchain as well. This class specifies which state to use.
BoolType
Solidity bool type
CompositeFunctionParameter
A function parameter that includes other named parameter instead of just wrapping single types.
ContractAbi
Defines the abi of a deployed Ethereum contract. The abi contains information about the functions defined in that contract.
ContractEvent
An event that can be emitted by a smart contract during a transaction.
ContractFunction
A function defined in the ABI of an compiled contract.
Credentials
Anything that can sign payloads with a private key.
CredentialsWithKnownAddress
Credentials where the address is known synchronously.
CustomTransactionSender
Interface for Credentials that don't sign transactions locally, for instance because the private key is not known to this library.
DecodingResult<T>
DeployedContract
Helper class that defines a contract with a known ABI that has been deployed on a Ethereum blockchain.
DynamicBytes
The solidity bytes type, which decodes byte arrays of arbitrary length.
DynamicLengthArray<T>
The solidity T[] type for arrays with an dynamic length.
EncodingLengthInfo
Information about whether the length of an encoding depends on the data (dynamic) or is fixed (static). If it's static, also contains information about the length of the encoding.
EtherAmount
Utility class to easily convert amounts of Ether into different units of quantities.
EthereumAddress
Represents an Ethereum address.
EthPrivateKey
Credentials that can sign payloads with an Ethereum private key.
EventComponent<T>
A FunctionParameter that is a component of an event. Contains additional information about whether the parameter is indexed.
FilterEvent
A log event emitted in a transaction.
FilterOptions
Options for event filters created with Web3Client.events.
FixedBytes
The bytes
FixedLengthArray<T>
The solidity T[k] type for arrays whose length is known.
FunctionParameter<T>
The parameter of a function with its name and the expected type.
FunctionType
GeneratedContract
Base classes for generated contracts.
IntType
The solidity int
StringType
The solidity string type, which utf-8 encodes strings
SyncInformation
When the client is currently syncing its blockchain with the network, this representation can be used to find information about at which block the node was before the sync, at which node it currently is and at which block the node will complete its sync.
Transaction
TransactionInformation
TransactionReceipt
TupleType
UintType
The solidity uint
Wallet
Represents a wallet file. Wallets are used to securely store credentials like a private key belonging to an Ethereum address. The private key in a wallet is encrypted with a secret password that needs to be known in order to obtain the private key.
Web3Client
Class for sending requests over an HTTP JSON-RPC API endpoint to Ethereum clients. This library won't use the accounts feature of clients to use them to create transactions, you will instead have to obtain private keys of accounts yourself.

Constants

sizeUnitBytes → const int
The length of the encoding of a solidity type is always a multiplicative of this unit size.
32

Functions

calculatePadLength(int bodyLength, {bool allowEmpty = false}) int
Calculates the amount of padding bytes needed so that the length of the padding plus the bodyLength is a multiplicative of sizeUnitBytes. If allowEmpty (defaults to false) is true, an empty length is allowed. Otherwise an empty bodyLength will be given a full sizeUnitBytes padding.
parseAbiType(String name) AbiType
Parses an ABI type from its AbiType.name.
prependTransactionType(int type, Uint8List transaction) Uint8List

Enums

ContractFunctionType
EtherUnit
StateMutability
The state mutability of a contract function defines how that function interacts with the blockchain.

Typedefs

SocketConnector = StreamChannel<String> Function()
Signature for a function that opens a socket on which json-rpc operations can be performed.