use ethers::{abi::AbiDecode, prelude::*}; use eyre::Result; // Abigen creates a SwapExactTokensForTokensCall struct that can be used to decode // the call data for the swapExactTokensForTokens function in the IUniswapV2Router02 contract abigen!( IUniswapV2Router02, r#"[ swapExactTokensForTokens(uint256 amountIn, uint256 amountOutMin, address[] calldata path, address to, uint256 deadline) ]"#, ); fn main() -> Result<()> { println!("Decoding https://etherscan.io/tx/0xd1b449d8b1552156957309bffb988924569de34fbf21b51e7af31070cc80fe9a"); let tx_input = "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"; let calldata: Bytes = tx_input.parse().unwrap(); let decoded = SwapExactTokensForTokensCall::decode(&calldata)?; let mut path = decoded.path.into_iter(); let from = path.next().unwrap(); let to = path.next().unwrap(); println!( "Swapped {} of token {from} for {} of token {to}", decoded.amount_in, decoded.amount_out_min ); Ok(()) }