diff options
Diffstat (limited to 'packages/sol-cov/src/utils.ts')
| -rw-r--r-- | packages/sol-cov/src/utils.ts | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/packages/sol-cov/src/utils.ts b/packages/sol-cov/src/utils.ts index d31696636..b696bd463 100644 --- a/packages/sol-cov/src/utils.ts +++ b/packages/sol-cov/src/utils.ts @@ -5,6 +5,10 @@ import * as _ from 'lodash'; import { ContractData, LineColumn, SingleFileSourceRange } from './types'; +// This is the minimum length of valid contract bytecode. The Solidity compiler +// metadata is 86 bytes. If you add the '0x' prefix, we get 88. +const MIN_CONTRACT_BYTECODE_LENGTH = 88; + export const utils = { compareLineColumn(lhs: LineColumn, rhs: LineColumn): number { return lhs.line !== rhs.line ? lhs.line - rhs.line : lhs.column - rhs.column; @@ -38,7 +42,15 @@ export const utils = { } const contractData = _.find(contractsData, contractDataCandidate => { const bytecodeRegex = utils.bytecodeToBytecodeRegex(contractDataCandidate.bytecode); + // If the bytecode is less than the minimum length, we are probably + // dealing with an interface. This isn't what we're looking for. + if (bytecodeRegex.length < MIN_CONTRACT_BYTECODE_LENGTH) { + return false; + } const runtimeBytecodeRegex = utils.bytecodeToBytecodeRegex(contractDataCandidate.runtimeBytecode); + if (runtimeBytecodeRegex.length < MIN_CONTRACT_BYTECODE_LENGTH) { + return false; + } // We use that function to find by bytecode or runtimeBytecode. Those are quasi-random strings so // collisions are practically impossible and it allows us to reuse that code return !_.isNull(bytecode.match(bytecodeRegex)) || !_.isNull(bytecode.match(runtimeBytecodeRegex)); |