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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,69 @@ | ||
| import { Interface } from '@ethersproject/abi' | ||
| import { | ||
| EntryPoint__factory, | ||
| EntryPointSimulations__factory, | ||
| TokenPaymaster__factory | ||
| } from '@account-abstraction/contracts' | ||
| import { ethers } from 'ethers' | ||
|
|
||
| const decodeRevertReasonContracts = new Interface([ | ||
| ...EntryPointSimulations__factory.createInterface().fragments, | ||
| ...TokenPaymaster__factory.createInterface().fragments, | ||
| // ...TestERC20__factory.createInterface().fragments, // for OZ errors, | ||
| 'error ECDSAInvalidSignature()' | ||
| ]) // .filter(f => f.type === 'error')) | ||
|
|
||
| /** | ||
| * helper to decode revert data into its string representation | ||
| * @param data revert data or an exception thrown by eth_call | ||
| * @param nullIfNoMatch true to return null if not found. otherwise, return input data as-is | ||
| */ | ||
| export function decodeRevertReason (data: string | Error, nullIfNoMatch = true): string | null { | ||
| if (typeof data !== 'string') { | ||
| const err = data as any | ||
| data = (err.data?.data ?? err.data ?? err.error.data) as string | ||
| } | ||
| const methodSig = data.slice(0, 10) | ||
| const dataParams = '0x' + data.slice(10) | ||
|
|
||
| try { | ||
| // would be nice to add these to above "decodeRevertReasonContracts", but we can't add Error(string) to xface... | ||
| if (methodSig === '0x08c379a0') { | ||
| const [err] = ethers.utils.defaultAbiCoder.decode(['string'], dataParams) | ||
| // eslint-disable-next-line @typescript-eslint/restrict-template-expressions | ||
| return `Error(${err})` | ||
| } else if (methodSig === '0x4e487b71') { | ||
| const [code] = ethers.utils.defaultAbiCoder.decode(['uint256'], dataParams) | ||
| return `Panic(${panicCodes[code] ?? code} + ')` | ||
| } | ||
| const err = decodeRevertReasonContracts.parseError(data) | ||
| // treat any error "bytes" argument as possible error to decode (e.g. FailedOpWithRevert, PostOpReverted) | ||
| const args = err.args.map((arg: any, index) => { | ||
| switch (err.errorFragment.inputs[index].type) { | ||
| case 'bytes' : return decodeRevertReason(arg, false) | ||
| case 'string': return `"${(arg as string)}"` | ||
| default: return arg | ||
| } | ||
| }) | ||
| return `${err.name}(${args.join(',')})` | ||
| } catch (e) { | ||
| // throw new Error('unsupported errorSig ' + data) | ||
| if (!nullIfNoMatch) { | ||
| return data | ||
| } | ||
| return null | ||
| } | ||
| } | ||
|
|
||
| const panicCodes: { [key: number]: string } = { | ||
| // from https://docs.soliditylang.org/en/v0.8.0/control-structures.html | ||
| 0x01: 'assert(false)', | ||
| 0x11: 'arithmetic overflow/underflow', | ||
| 0x12: 'divide by zero', | ||
| 0x21: 'invalid enum value', | ||
| 0x22: 'storage byte array that is incorrectly encoded', | ||
| 0x31: '.pop() on an empty array.', | ||
| 0x32: 'array sout-of-bounds or negative index', | ||
| 0x41: 'memory overflow', | ||
| 0x51: 'zero-initialized variable of internal function type' | ||
| } |
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