41 lines
1.4 KiB
TypeScript
41 lines
1.4 KiB
TypeScript
|
import { keccak256 } from "../crypto/keccak.js";
|
||
|
|
import { concat, dataSlice, encodeRlp, logger } from "../utils/index.js";
|
||
|
|
|
||
|
|
import { getAddress } from "./address.js";
|
||
|
|
|
||
|
|
import type { BigNumberish, BytesLike } from "../utils/index.js";
|
||
|
|
|
||
|
|
|
||
|
|
// http://ethereum.stackexchange.com/questions/760/how-is-the-address-of-an-ethereum-contract-computed
|
||
|
|
export function getCreateAddress(tx: { from: string, nonce: BigNumberish }): string {
|
||
|
|
const from = getAddress(tx.from);
|
||
|
|
const nonce = logger.getBigInt(tx.nonce, "tx.nonce");
|
||
|
|
|
||
|
|
let nonceHex = nonce.toString(16);
|
||
|
|
if (nonceHex === "0") {
|
||
|
|
nonceHex = "0x";
|
||
|
|
} else if (nonceHex.length % 2) {
|
||
|
|
nonceHex = "0x0" + nonceHex;
|
||
|
|
} else {
|
||
|
|
nonceHex = "0x" + nonceHex;
|
||
|
|
}
|
||
|
|
|
||
|
|
return getAddress(dataSlice(keccak256(encodeRlp([ from, nonceHex ])), 12));
|
||
|
|
}
|
||
|
|
|
||
|
|
export function getCreate2Address(_from: string, _salt: BytesLike, _initCodeHash: BytesLike): string {
|
||
|
|
const from = getAddress(_from);
|
||
|
|
const salt = logger.getBytes(_salt, "salt");
|
||
|
|
const initCodeHash = logger.getBytes(_initCodeHash, "initCodeHash");
|
||
|
|
|
||
|
|
if (salt.length !== 32) {
|
||
|
|
logger.throwArgumentError("salt must be 32 bytes", "salt", _salt);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (initCodeHash.length !== 32) {
|
||
|
|
logger.throwArgumentError("initCodeHash must be 32 bytes", "initCodeHash", _initCodeHash);
|
||
|
|
}
|
||
|
|
|
||
|
|
return getAddress(dataSlice(keccak256(concat([ "0xff", from, salt, initCodeHash ])), 12))
|
||
|
|
}
|