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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/viem/_esm/utils/abi
Просмотр файла: encodeEventTopics.js
import { AbiEventNotFoundError, } from '../../errors/abi.js';
import { FilterTypeNotSupportedError, } from '../../errors/log.js';
import { toBytes } from '../encoding/toBytes.js';
import { keccak256 } from '../hash/keccak256.js';
import { toEventSelector, } from '../hash/toEventSelector.js';
import { encodeAbiParameters, } from './encodeAbiParameters.js';
import { formatAbiItem } from './formatAbiItem.js';
import { getAbiItem } from './getAbiItem.js';
const docsPath = '/docs/contract/encodeEventTopics';
export function encodeEventTopics(parameters) {
const { abi, eventName, args } = parameters;
let abiItem = abi[0];
if (eventName) {
const item = getAbiItem({ abi, name: eventName });
if (!item)
throw new AbiEventNotFoundError(eventName, { docsPath });
abiItem = item;
}
if (abiItem.type !== 'event')
throw new AbiEventNotFoundError(undefined, { docsPath });
const definition = formatAbiItem(abiItem);
const signature = toEventSelector(definition);
let topics = [];
if (args && 'inputs' in abiItem) {
const indexedInputs = abiItem.inputs?.filter((param) => 'indexed' in param && param.indexed);
const args_ = Array.isArray(args)
? args
: Object.values(args).length > 0
? (indexedInputs?.map((x) => args[x.name]) ?? [])
: [];
if (args_.length > 0) {
topics =
indexedInputs?.map((param, i) => {
if (Array.isArray(args_[i]))
return args_[i].map((_, j) => encodeArg({ param, value: args_[i][j] }));
return typeof args_[i] !== 'undefined' && args_[i] !== null
? encodeArg({ param, value: args_[i] })
: null;
}) ?? [];
}
}
return [signature, ...topics];
}
function encodeArg({ param, value, }) {
if (param.type === 'string' || param.type === 'bytes')
return keccak256(toBytes(value));
if (param.type === 'tuple' || param.type.match(/^(.*)\[(\d+)?\]$/))
throw new FilterTypeNotSupportedError(param.type);
return encodeAbiParameters([param], [value]);
}
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