ipfs storage for images and other nontext items. for use with etica - runs on etica network and currencys
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74 lines
2.9 KiB
74 lines
2.9 KiB
"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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* @example |
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* from = "0x8ba1f109551bD432803012645Ac136ddd64DBA72"; |
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* nonce = 5; |
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* |
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* getCreateAddress({ from, nonce }); |
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* //_result: |
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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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* For a quick overview and example of ``CREATE2``, see [[link-ricmoo-wisps]]. |
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* |
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* @example |
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* // The address of the contract |
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* from = "0x8ba1f109551bD432803012645Ac136ddd64DBA72" |
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* |
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* // The salt |
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* salt = id("HelloWorld") |
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* |
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* // The hash of the initCode |
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* initCode = "0x6394198df16000526103ff60206004601c335afa6040516060f3"; |
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* initCodeHash = keccak256(initCode) |
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* |
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* getCreate2Address(from, salt, initCodeHash) |
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* //_result: |
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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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