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-rw-r--r--packages/utils/src/abi_decoder.ts27
1 files changed, 14 insertions, 13 deletions
diff --git a/packages/utils/src/abi_decoder.ts b/packages/utils/src/abi_decoder.ts
index 368973b1b..2b496eb17 100644
--- a/packages/utils/src/abi_decoder.ts
+++ b/packages/utils/src/abi_decoder.ts
@@ -1,7 +1,7 @@
import { AbiType, DecodedLogArgs, LogWithDecodedArgs, RawLog, SolidityTypes } from '@0xproject/types';
+import * as ethersContracts from 'ethers-contracts';
import * as _ from 'lodash';
import * as Web3 from 'web3';
-import * as SolidityCoder from 'web3/lib/solidity/coder';
import { BigNumber } from './configured_bignumber';
@@ -27,31 +27,29 @@ export class AbiDecoder {
if (_.isUndefined(event)) {
return log;
}
+ const ethersInterface = new ethersContracts.Interface([event]);
const logData = log.data;
const decodedParams: DecodedLogArgs = {};
- let dataIndex = 0;
let topicsIndex = 1;
const nonIndexedInputs = _.filter(event.inputs, input => !input.indexed);
const dataTypes = _.map(nonIndexedInputs, input => input.type);
- const decodedData = SolidityCoder.decodeParams(dataTypes, logData.slice('0x'.length));
+ const decodedData = ethersInterface.events[event.name].parse(log.data);
let failedToDecode = false;
- _.forEach(event.inputs, (param: Web3.EventParameter) => {
+ _.forEach(event.inputs, (param: Web3.EventParameter, i: number) => {
// Indexed parameters are stored in topics. Non-indexed ones in decodedData
- let value: BigNumber | string = param.indexed ? log.topics[topicsIndex++] : decodedData[dataIndex++];
+ let value: BigNumber | string | number = param.indexed ? log.topics[topicsIndex++] : decodedData[i];
if (_.isUndefined(value)) {
failedToDecode = true;
return;
}
if (param.type === SolidityTypes.Address) {
value = AbiDecoder._padZeros(new BigNumber(value).toString(16));
- } else if (
- param.type === SolidityTypes.Uint256 ||
- param.type === SolidityTypes.Uint8 ||
- param.type === SolidityTypes.Uint
- ) {
+ } else if (param.type === SolidityTypes.Uint256 || param.type === SolidityTypes.Uint) {
value = new BigNumber(value);
+ } else if (param.type === SolidityTypes.Uint8) {
+ value = new BigNumber(value).toNumber();
}
decodedParams[param.name] = value;
});
@@ -67,11 +65,14 @@ export class AbiDecoder {
}
}
private _addABI(abiArray: Web3.AbiDefinition[]): void {
+ if (_.isUndefined(abiArray)) {
+ return;
+ }
+ const ethersInterface = new ethersContracts.Interface(abiArray);
_.map(abiArray, (abi: Web3.AbiDefinition) => {
if (abi.type === AbiType.Event) {
- const signature = `${abi.name}(${_.map(abi.inputs, input => input.type).join(',')})`;
- const signatureHash = new Web3().sha3(signature);
- this._methodIds[signatureHash] = abi;
+ const topic = ethersInterface.events[abi.name].topic;
+ this._methodIds[topic] = abi;
}
});
this._savedABIs = this._savedABIs.concat(abiArray);