112 lines
4.1 KiB
JavaScript
112 lines
4.1 KiB
JavaScript
import { Interface } from "../abi/index.js";
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import { getCreateAddress } from "../address/index.js";
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import { concat, defineProperties, getBytes, hexlify, assert, assertArgument } from "../utils/index.js";
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import { BaseContract, copyOverrides, resolveArgs } from "./contract.js";
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// A = Arguments to the constructor
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// I = Interface of deployed contracts
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/**
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* A **ContractFactory** is used to deploy a Contract to the blockchain.
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*/
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export class ContractFactory {
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/**
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* The Contract Interface.
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*/
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interface;
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/**
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* The Contract deployment bytecode. Often called the initcode.
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*/
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bytecode;
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/**
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* The ContractRunner to deploy the Contract as.
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*/
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runner;
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/**
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* Create a new **ContractFactory** with %%abi%% and %%bytecode%%,
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* optionally connected to %%runner%%.
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*
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* The %%bytecode%% may be the ``bytecode`` property within the
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* standard Solidity JSON output.
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*/
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constructor(abi, bytecode, runner) {
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const iface = Interface.from(abi);
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// Dereference Solidity bytecode objects and allow a missing `0x`-prefix
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if (bytecode instanceof Uint8Array) {
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bytecode = hexlify(getBytes(bytecode));
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}
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else {
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if (typeof (bytecode) === "object") {
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bytecode = bytecode.object;
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}
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if (!bytecode.startsWith("0x")) {
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bytecode = "0x" + bytecode;
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}
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bytecode = hexlify(getBytes(bytecode));
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}
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defineProperties(this, {
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bytecode, interface: iface, runner: (runner || null)
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});
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}
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attach(target) {
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return new BaseContract(target, this.interface, this.runner);
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}
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/**
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* Resolves to the transaction to deploy the contract, passing %%args%%
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* into the constructor.
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*/
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async getDeployTransaction(...args) {
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let overrides = {};
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const fragment = this.interface.deploy;
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if (fragment.inputs.length + 1 === args.length) {
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overrides = await copyOverrides(args.pop());
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}
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if (fragment.inputs.length !== args.length) {
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throw new Error("incorrect number of arguments to constructor");
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}
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const resolvedArgs = await resolveArgs(this.runner, fragment.inputs, args);
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const data = concat([this.bytecode, this.interface.encodeDeploy(resolvedArgs)]);
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return Object.assign({}, overrides, { data });
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}
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/**
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* Resolves to the Contract deployed by passing %%args%% into the
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* constructor.
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*
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* This will resolve to the Contract before it has been deployed to the
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* network, so the [[BaseContract-waitForDeployment]] should be used before
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* sending any transactions to it.
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*/
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async deploy(...args) {
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const tx = await this.getDeployTransaction(...args);
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assert(this.runner && typeof (this.runner.sendTransaction) === "function", "factory runner does not support sending transactions", "UNSUPPORTED_OPERATION", {
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operation: "sendTransaction"
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});
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const sentTx = await this.runner.sendTransaction(tx);
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const address = getCreateAddress(sentTx);
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return new BaseContract(address, this.interface, this.runner, sentTx);
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}
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/**
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* Return a new **ContractFactory** with the same ABI and bytecode,
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* but connected to %%runner%%.
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*/
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connect(runner) {
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return new ContractFactory(this.interface, this.bytecode, runner);
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}
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/**
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* Create a new **ContractFactory** from the standard Solidity JSON output.
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*/
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static fromSolidity(output, runner) {
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assertArgument(output != null, "bad compiler output", "output", output);
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if (typeof (output) === "string") {
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output = JSON.parse(output);
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}
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const abi = output.abi;
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let bytecode = "";
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if (output.bytecode) {
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bytecode = output.bytecode;
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}
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else if (output.evm && output.evm.bytecode) {
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bytecode = output.evm.bytecode;
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}
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return new this(abi, bytecode, runner);
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}
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}
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//# sourceMappingURL=factory.js.map
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