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Create decode_tx_input.rs (#1054) 

* Create decode_tx_input.rs

* simplify calldata parsing

* chore: fmt

Co-authored-by: Georgios Konstantopoulos <me@gakonst.com>
This commit is contained in:
Yaser Martinez Palenzuela 2022-03-17 13:44:38 +00:00 committed by GitHub
parent 2933bb2609
commit 59e2a305f9
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examples/decode_tx_input.rs Normal file
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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 from = decoded.path.into_iter().next().unwrap();
println!(
"Swapped {} of token {} for {} of token {}",
decoded.amount_in, from, decoded.amount_out_min, decoded.to
);
Ok(())
}