check-ethereum-scanner
Version:
Safety checks for new Ethereum tokens
87 lines • 3.74 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.Withdrawal = void 0;
const address_1 = require("./address");
const bytes_1 = require("./bytes");
const types_1 = require("./types");
/**
* Representation of EIP-4895 withdrawal data
*/
class Withdrawal {
/**
* This constructor assigns and validates the values.
* Use the static factory methods to assist in creating a Withdrawal object from varying data types.
* Its amount is in Gwei to match CL representation and for eventual ssz withdrawalsRoot
*/
constructor(index, validatorIndex, address,
/**
* withdrawal amount in Gwei to match the CL repesentation and eventually ssz withdrawalsRoot
*/
amount) {
this.index = index;
this.validatorIndex = validatorIndex;
this.address = address;
this.amount = amount;
}
static fromWithdrawalData(withdrawalData) {
const { index: indexData, validatorIndex: validatorIndexData, address: addressData, amount: amountData, } = withdrawalData;
const index = (0, types_1.toType)(indexData, types_1.TypeOutput.BigInt);
const validatorIndex = (0, types_1.toType)(validatorIndexData, types_1.TypeOutput.BigInt);
const address = new address_1.Address((0, types_1.toType)(addressData, types_1.TypeOutput.Buffer));
const amount = (0, types_1.toType)(amountData, types_1.TypeOutput.BigInt);
return new Withdrawal(index, validatorIndex, address, amount);
}
static fromValuesArray(withdrawalArray) {
if (withdrawalArray.length !== 4) {
throw Error(`Invalid withdrawalArray length expected=4 actual=${withdrawalArray.length}`);
}
const [index, validatorIndex, address, amount] = withdrawalArray;
return Withdrawal.fromWithdrawalData({ index, validatorIndex, address, amount });
}
/**
* Convert a withdrawal to a buffer array
* @param withdrawal the withdrawal to convert
* @returns buffer array of the withdrawal
*/
static toBufferArray(withdrawal) {
const { index, validatorIndex, address, amount } = withdrawal;
const indexBuffer = (0, types_1.toType)(index, types_1.TypeOutput.BigInt) === BigInt(0)
? Buffer.alloc(0)
: (0, types_1.toType)(index, types_1.TypeOutput.Buffer);
const validatorIndexBuffer = (0, types_1.toType)(validatorIndex, types_1.TypeOutput.BigInt) === BigInt(0)
? Buffer.alloc(0)
: (0, types_1.toType)(validatorIndex, types_1.TypeOutput.Buffer);
let addressBuffer;
if (address instanceof address_1.Address) {
addressBuffer = address.buf;
}
else {
addressBuffer = (0, types_1.toType)(address, types_1.TypeOutput.Buffer);
}
const amountBuffer = (0, types_1.toType)(amount, types_1.TypeOutput.BigInt) === BigInt(0)
? Buffer.alloc(0)
: (0, types_1.toType)(amount, types_1.TypeOutput.Buffer);
return [indexBuffer, validatorIndexBuffer, addressBuffer, amountBuffer];
}
raw() {
return Withdrawal.toBufferArray(this);
}
toValue() {
return {
index: this.index,
validatorIndex: this.validatorIndex,
address: this.address.buf,
amount: this.amount,
};
}
toJSON() {
return {
index: (0, bytes_1.bigIntToHex)(this.index),
validatorIndex: (0, bytes_1.bigIntToHex)(this.validatorIndex),
address: '0x' + this.address.buf.toString('hex'),
amount: (0, bytes_1.bigIntToHex)(this.amount),
};
}
}
exports.Withdrawal = Withdrawal;
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