From 387363283ca03ac1d6c9be5b7be2107790bbf79d Mon Sep 17 00:00:00 2001 From: Leonid Logvinov Date: Mon, 22 Jan 2018 21:53:32 +0100 Subject: Remove truffle from tests --- packages/utils/src/abi_decoder.ts | 70 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 packages/utils/src/abi_decoder.ts (limited to 'packages/utils/src/abi_decoder.ts') diff --git a/packages/utils/src/abi_decoder.ts b/packages/utils/src/abi_decoder.ts new file mode 100644 index 000000000..574902de6 --- /dev/null +++ b/packages/utils/src/abi_decoder.ts @@ -0,0 +1,70 @@ +import { AbiType, DecodedLogArgs, LogWithDecodedArgs, RawLog, SolidityTypes } from '@0xproject/types'; +import * as _ from 'lodash'; +import * as Web3 from 'web3'; +import * as SolidityCoder from 'web3/lib/solidity/coder'; + +import { BigNumber } from './configured_bignumber'; + +export class AbiDecoder { + private _savedABIs: Web3.AbiDefinition[] = []; + private _methodIds: { [signatureHash: string]: Web3.EventAbi } = {}; + private static _padZeros(address: string) { + let formatted = address; + if (_.startsWith(formatted, '0x')) { + formatted = formatted.slice(2); + } + + formatted = _.padStart(formatted, 40, '0'); + return `0x${formatted}`; + } + constructor(abiArrays: Web3.AbiDefinition[][]) { + _.map(abiArrays, this._addABI.bind(this)); + } + // This method can only decode logs from the 0x & ERC20 smart contracts + public tryToDecodeLogOrNoop(log: Web3.LogEntry): LogWithDecodedArgs | RawLog { + const methodId = log.topics[0]; + const event = this._methodIds[methodId]; + if (_.isUndefined(event)) { + return log; + } + const logData = log.data; + const decodedParams: DecodedLogArgs = {}; + let dataIndex = 0; + let topicsIndex = 1; + + const nonIndexedInputs = _.filter(event.inputs, input => !input.indexed); + const dataTypes = _.map(nonIndexedInputs, input => input.type); + const decodedData = SolidityCoder.decodeParams(dataTypes, logData.slice('0x'.length)); + + _.map(event.inputs, (param: Web3.EventParameter) => { + // Indexed parameters are stored in topics. Non-indexed ones in decodedData + let value = param.indexed ? log.topics[topicsIndex++] : decodedData[dataIndex++]; + if (param.type === SolidityTypes.Address) { + value = AbiDecoder._padZeros(new BigNumber(value).toString(16)); + } else if ( + param.type === SolidityTypes.Uint256 || + param.type === SolidityTypes.Uint8 || + param.type === SolidityTypes.Uint + ) { + value = new BigNumber(value); + } + decodedParams[param.name] = value; + }); + + return { + ...log, + event: event.name, + args: decodedParams, + }; + } + private _addABI(abiArray: Web3.AbiDefinition[]): void { + _.map(abiArray, (abi: Web3.AbiDefinition) => { + if (abi.type === AbiType.Event) { + const signature = `${abi.name}(${_.map(abi.inputs, input => input.type).join(',')})`; + const signatureHash = new Web3().sha3(signature); + this._methodIds[signatureHash] = abi; + } + }); + this._savedABIs = this._savedABIs.concat(abiArray); + } +} -- cgit v1.2.3 From 1e9147b8bb45a251eefdead23573a9e8d68fc34b Mon Sep 17 00:00:00 2001 From: Leonid Logvinov Date: Thu, 25 Jan 2018 15:12:46 +0100 Subject: Normalize the dependencies --- packages/utils/src/abi_decoder.ts | 1 + 1 file changed, 1 insertion(+) (limited to 'packages/utils/src/abi_decoder.ts') diff --git a/packages/utils/src/abi_decoder.ts b/packages/utils/src/abi_decoder.ts index 574902de6..d6584d44d 100644 --- a/packages/utils/src/abi_decoder.ts +++ b/packages/utils/src/abi_decoder.ts @@ -3,6 +3,7 @@ import * as _ from 'lodash'; import * as Web3 from 'web3'; import * as SolidityCoder from 'web3/lib/solidity/coder'; +// tslint:disable-next-line:no-unused-variable import { BigNumber } from './configured_bignumber'; export class AbiDecoder { -- cgit v1.2.3 From c02dfc4fb1bf39ceaaf80ec68fb8907a4a11e0df Mon Sep 17 00:00:00 2001 From: Leonid Logvinov Date: Fri, 26 Jan 2018 12:57:51 +0100 Subject: Fix tslint issues --- packages/utils/src/abi_decoder.ts | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'packages/utils/src/abi_decoder.ts') diff --git a/packages/utils/src/abi_decoder.ts b/packages/utils/src/abi_decoder.ts index d6584d44d..f96ee2edb 100644 --- a/packages/utils/src/abi_decoder.ts +++ b/packages/utils/src/abi_decoder.ts @@ -3,7 +3,6 @@ import * as _ from 'lodash'; import * as Web3 from 'web3'; import * as SolidityCoder from 'web3/lib/solidity/coder'; -// tslint:disable-next-line:no-unused-variable import { BigNumber } from './configured_bignumber'; export class AbiDecoder { @@ -39,7 +38,7 @@ export class AbiDecoder { _.map(event.inputs, (param: Web3.EventParameter) => { // Indexed parameters are stored in topics. Non-indexed ones in decodedData - let value = param.indexed ? log.topics[topicsIndex++] : decodedData[dataIndex++]; + let value: BigNumber | string = param.indexed ? log.topics[topicsIndex++] : decodedData[dataIndex++]; if (param.type === SolidityTypes.Address) { value = AbiDecoder._padZeros(new BigNumber(value).toString(16)); } else if ( -- cgit v1.2.3