init

2025-05-19 20:36:21 -05:00
commit f5303487be
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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getCreate2Address = exports.getCreateAddress = void 0;
+const index_js_1 = require("../crypto/index.js");
+const index_js_2 = require("../utils/index.js");
+const address_js_1 = require("./address.js");
+// http://ethereum.stackexchange.com/questions/760/how-is-the-address-of-an-ethereum-contract-computed
+/**
+ *  Returns the address that would result from a ``CREATE`` for %%tx%%.
+ *
+ *  This can be used to compute the address a contract will be
+ *  deployed to by an EOA when sending a deployment transaction (i.e.
+ *  when the ``to`` address is ``null``).
+ *
+ *  This can also be used to compute the address a contract will be
+ *  deployed to by a contract, by using the contract's address as the
+ *  ``to`` and the contract's nonce.
+ *
+ *  @example
+ *    from = "0x8ba1f109551bD432803012645Ac136ddd64DBA72";
+ *    nonce = 5;
+ *
+ *    getCreateAddress({ from, nonce });
+ *    //_result:
+ */
+function getCreateAddress(tx) {
+    const from = (0, address_js_1.getAddress)(tx.from);
+    const nonce = (0, index_js_2.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 (0, address_js_1.getAddress)((0, index_js_2.dataSlice)((0, index_js_1.keccak256)((0, index_js_2.encodeRlp)([from, nonceHex])), 12));
+}
+exports.getCreateAddress = getCreateAddress;
+/**
+ *  Returns the address that would result from a ``CREATE2`` operation
+ *  with the given %%from%%, %%salt%% and %%initCodeHash%%.
+ *
+ *  To compute the %%initCodeHash%% from a contract's init code, use
+ *  the [[keccak256]] function.
+ *
+ *  For a quick overview and example of ``CREATE2``, see [[link-ricmoo-wisps]].
+ *
+ *  @example
+ *    // The address of the contract
+ *    from = "0x8ba1f109551bD432803012645Ac136ddd64DBA72"
+ *
+ *    // The salt
+ *    salt = id("HelloWorld")
+ *
+ *    // The hash of the initCode
+ *    initCode = "0x6394198df16000526103ff60206004601c335afa6040516060f3";
+ *    initCodeHash = keccak256(initCode)
+ *
+ *    getCreate2Address(from, salt, initCodeHash)
+ *    //_result:
+ */
+function getCreate2Address(_from, _salt, _initCodeHash) {
+    const from = (0, address_js_1.getAddress)(_from);
+    const salt = (0, index_js_2.getBytes)(_salt, "salt");
+    const initCodeHash = (0, index_js_2.getBytes)(_initCodeHash, "initCodeHash");
+    (0, index_js_2.assertArgument)(salt.length === 32, "salt must be 32 bytes", "salt", _salt);
+    (0, index_js_2.assertArgument)(initCodeHash.length === 32, "initCodeHash must be 32 bytes", "initCodeHash", _initCodeHash);
+    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));
+}
+exports.getCreate2Address = getCreate2Address;
+//# sourceMappingURL=contract-address.js.map