Struct Function 

pub struct Function { /* private fields */ }

An Ethereum contract function for ABI-encoding calls and decoding results.

Example

use chains_sdk::ethereum::abi::{Function, AbiValue};

let transfer = Function::new("transfer(address,uint256)");
assert_eq!(hex::encode(transfer.selector()), "a9059cbb");

let calldata = transfer.encode(&[
    AbiValue::Address([0xBB; 20]),
    AbiValue::from_u128(1_000_000_000_000_000_000), // 1 token (18 decimals)
]);

Implementations

impl Function

pub fn new(signature: &str) -> Self

Create a new function from its Solidity signature.

The signature must follow the canonical format: name(type1,type2,...)

pub fn selector(&self) -> [u8; 4]

Return the 4-byte function selector.

pub fn signature(&self) -> &str

Return the function signature string.

pub fn encode(&self, args: &[AbiValue]) -> Vec<u8>

Encode a function call with the given arguments.

Returns selector || abi.encode(args...).