51 lines
2.3 KiB
JavaScript
51 lines
2.3 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.getCreate2Address = exports.getCreateAddress = void 0;
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const index_js_1 = require("../crypto/index.js");
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const index_js_2 = require("../utils/index.js");
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const address_js_1 = require("./address.js");
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// http://ethereum.stackexchange.com/questions/760/how-is-the-address-of-an-ethereum-contract-computed
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/**
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* Returns the address that would result from a ``CREATE`` for %%tx%%.
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*
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* This can be used to compute the address a contract will be
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* deployed to by an EOA when sending a deployment transaction (i.e.
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* when the ``to`` address is ``null``).
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*
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* This can also be used to compute the address a contract will be
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* deployed to by a contract, by using the contract's address as the
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* ``to`` and the contract's nonce.
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*/
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function getCreateAddress(tx) {
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const from = (0, address_js_1.getAddress)(tx.from);
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const nonce = (0, index_js_2.getBigInt)(tx.nonce, "tx.nonce");
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let nonceHex = nonce.toString(16);
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if (nonceHex === "0") {
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nonceHex = "0x";
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}
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else if (nonceHex.length % 2) {
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nonceHex = "0x0" + nonceHex;
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}
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else {
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nonceHex = "0x" + nonceHex;
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}
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return (0, address_js_1.getAddress)((0, index_js_2.dataSlice)((0, index_js_1.keccak256)((0, index_js_2.encodeRlp)([from, nonceHex])), 12));
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}
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exports.getCreateAddress = getCreateAddress;
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/**
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* Returns the address that would result from a ``CREATE2`` operation
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* with the given %%from%%, %%salt%% and %%initCodeHash%%.
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*
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* To compute the %%initCodeHash%% from a contract's init code, use
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* the [[keccak256]] function.
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*/
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function getCreate2Address(_from, _salt, _initCodeHash) {
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const from = (0, address_js_1.getAddress)(_from);
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const salt = (0, index_js_2.getBytes)(_salt, "salt");
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const initCodeHash = (0, index_js_2.getBytes)(_initCodeHash, "initCodeHash");
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(0, index_js_2.assertArgument)(salt.length === 32, "salt must be 32 bytes", "salt", _salt);
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(0, index_js_2.assertArgument)(initCodeHash.length === 32, "initCodeHash must be 32 bytes", "initCodeHash", _initCodeHash);
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return (0, address_js_1.getAddress)((0, index_js_2.dataSlice)((0, index_js_1.keccak256)((0, index_js_2.concat)(["0xff", from, salt, initCodeHash])), 12));
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}
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exports.getCreate2Address = getCreate2Address;
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//# sourceMappingURL=contract-address.js.map
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