fix: off by one error during event decoding (#296)
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@ -432,7 +432,7 @@ fn derive_decode_from_log_impl(
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let flat_topics = topics.iter().skip(1).flat_map(|t| t.as_ref().to_vec()).collect::<Vec<u8>>();
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},
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quote! {
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if topic_tokens.is_empty() || topic_tokens.len() != topics.len() - 1 {
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if topic_tokens.len() != topics.len() - 1 {
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return Err(ethers_core::abi::Error::InvalidData);
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}
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},
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@ -1,6 +1,6 @@
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use ethers::core::types::{H160, H256, I256, U128, U256};
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use ethers_contract::{abigen, EthAbiType, EthEvent};
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use ethers_core::abi::Tokenizable;
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use ethers_contract::{abigen, EthAbiType, EthEvent, EthLogDecode};
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use ethers_core::abi::{RawLog, Tokenizable};
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use ethers_core::types::Address;
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#[derive(Debug, Clone, PartialEq, EthAbiType)]
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@ -236,3 +236,35 @@ fn can_generate_ethevent_from_json() {
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CreatedFilter::signature()
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);
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}
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#[test]
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fn can_decode_event_with_no_topics() {
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#[derive(Debug, PartialEq, EthEvent)]
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pub struct LiquidateBorrow {
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liquidator: Address,
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borrower: Address,
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repay_amount: U256,
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c_token_collateral: Address,
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seize_tokens: U256,
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}
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// https://etherscan.io/tx/0xb7ba825294f757f8b8b6303b2aef542bcaebc9cc0217ddfaf822200a00594ed9#eventlog index 141
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let log = RawLog {
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topics: vec![
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"298637f684da70674f26509b10f07ec2fbc77a335ab1e7d6215a4b2484d8bb52"
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.parse()
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.unwrap(),
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],
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data: vec![
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 188, 205, 0, 29, 173, 151, 238, 5, 127, 91, 31,
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197, 154, 221, 40, 175, 143, 32, 26, 201, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 133, 129,
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195, 136, 163, 5, 24, 136, 69, 34, 251, 23, 122, 146, 252, 33, 147, 81, 8, 20, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 18, 195, 162, 210,
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38, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 77, 220, 45, 25, 57, 72, 146, 109, 2,
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249, 177, 254, 158, 29, 170, 7, 24, 39, 14, 213, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 80, 30, 88,
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],
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};
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let event = <LiquidateBorrow as EthLogDecode>::decode_log(&log).unwrap();
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assert_eq!(event.seize_tokens, 5250648u64.into());
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assert_eq!(event.repay_amount, 653800000000000000u64.into());
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}
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