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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/viem/_esm/zksync/utils
Просмотр файла: hashBytecode.js
import { pad } from '../../utils/data/pad.js';
import { toBytes } from '../../utils/encoding/toBytes.js';
import { sha256 } from '../../utils/hash/sha256.js';
import { maxBytecodeSize } from '../constants/number.js';
import { BytecodeLengthExceedsMaxSizeError, BytecodeLengthInWordsMustBeOddError, BytecodeLengthMustBeDivisibleBy32Error, } from '../errors/bytecode.js';
export function hashBytecode(bytecode) {
const bytecodeBytes = toBytes(bytecode);
if (bytecodeBytes.length % 32 !== 0)
throw new BytecodeLengthMustBeDivisibleBy32Error({
givenLength: bytecodeBytes.length,
});
if (bytecodeBytes.length > maxBytecodeSize)
throw new BytecodeLengthExceedsMaxSizeError({
givenLength: bytecodeBytes.length,
maxBytecodeSize,
});
const hashStr = sha256(bytecodeBytes);
const hash = toBytes(hashStr);
// Note that the length of the bytecode
// should be provided in 32-byte words.
const bytecodeLengthInWords = bytecodeBytes.length / 32;
if (bytecodeLengthInWords % 2 === 0) {
throw new BytecodeLengthInWordsMustBeOddError({
givenLengthInWords: bytecodeLengthInWords,
});
}
const bytecodeLength = toBytes(bytecodeLengthInWords);
// The bytecode should always take the first 2 bytes of the bytecode hash,
// so we pad it from the left in case the length is smaller than 2 bytes.
const bytecodeLengthPadded = pad(bytecodeLength, { size: 2 });
const codeHashVersion = new Uint8Array([1, 0]);
hash.set(codeHashVersion, 0);
hash.set(bytecodeLengthPadded, 2);
return hash;
}
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