ContractsUtils class

A utility class providing methods to interact with contracts.

ContractsUtils simplifies tasks such as reading from a contract, encoding data for contract calls, and signing off-chain transactions.

Constructors

ContractsUtils()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Methods

encodedDataForContractCall(String contractName, EthereumAddress contractAddress, String methodName, List params, {String? jsonInterface, bool include0x = false, int? forcePadLength, bool padToEvenLength = false}) → String

Encodes data for a contract call using the specified function and parameters.

encodeERC20ApproveCall(EthereumAddress tokenAddress, EthereumAddress spender, BigInt amount) → Uint8List

Encodes the data for an ERC20 'approve' operation.

encodeERC20TransferCall(EthereumAddress tokenAddress, EthereumAddress recipient, BigInt amount) → Uint8List

Encodes the data for an ERC20 'transfer' operation.

encodeERC721ApproveCall(EthereumAddress tokenAddress, EthereumAddress spender, BigInt tokenId) → Uint8List

Encodes the data for an ERC721 'approve' operation.

encodeERC721SafeTransferCall(EthereumAddress from, EthereumAddress nftContractAddress, EthereumAddress to, BigInt tokenId) → Uint8List

Encodes the data for an ERC721 'safeTransferFrom' operation.

getERC20TokenDetails(Web3Client web3client, EthereumAddress tokenAddress) → Future<TokenDetails>

Retrieves detailed information about an ERC20 token.

isNativeToken(String address) → bool

Checks if the given address is the native token's address.

readFromContract(Web3Client client, String contractName, EthereumAddress contractAddress, String methodName, List params, {String? jsonInterface}) → Future<List>

Reads data from a deployed contract using the specified function and parameters.

readFromContractWithFirstResult({required Web3Client client, required String contractName, required EthereumAddress contractAddress, required String methodName, required List params}) → Future<BigInt>

Reads data from a specified contract and returns the first result as BigInt.

signOffChain(EthPrivateKey credentials, String from, String to, String data, String nonce, {BigInt? value, BigInt? gasPrice, BigInt? gasLimit}) → String

Signs an off-chain transaction using the provided credentials and transaction data.