import { schemas, SchemaValidator } from '@0xproject/json-schemas';
import {
generatePseudoRandomSalt,
getOrderHashHex,
isValidOrderHash,
isValidSignature,
signOrderHashAsync,
} from '@0xproject/order-utils';
import { ECSignature, Order, Provider, SignedOrder, TransactionReceiptWithDecodedLogs } from '@0xproject/types';
import { AbiDecoder, BigNumber, intervalUtils } from '@0xproject/utils';
import { Web3Wrapper } from '@0xproject/web3-wrapper';
import * as ethUtil from 'ethereumjs-util';
import * as _ from 'lodash';
import { artifacts } from './artifacts';
import { EtherTokenWrapper } from './contract_wrappers/ether_token_wrapper';
import { ExchangeWrapper } from './contract_wrappers/exchange_wrapper';
import { TokenRegistryWrapper } from './contract_wrappers/token_registry_wrapper';
import { TokenTransferProxyWrapper } from './contract_wrappers/token_transfer_proxy_wrapper';
import { TokenWrapper } from './contract_wrappers/token_wrapper';
import { ContractWrappersConfigSchema } from './schemas/contract_wrappers_config_schema';
import { contractWrappersPrivateNetworkConfigSchema } from './schemas/contract_wrappers_private_network_config_schema';
import { contractWrappersPublicNetworkConfigSchema } from './schemas/contract_wrappers_public_network_config_schema';
import { ContractWrappersConfig } from './types';
import { assert } from './utils/assert';
import { constants } from './utils/constants';
import { decorators } from './utils/decorators';
import { utils } from './utils/utils';
/**
* The ContractWrappers class contains smart contract wrappers helpful when building on 0x protocol.
*/
export class ContractWrappers {
/**
* An instance of the ExchangeWrapper class containing methods for interacting with the 0x Exchange smart contract.
*/
public exchange: ExchangeWrapper;
/**
* An instance of the TokenRegistryWrapper class containing methods for interacting with the 0x
* TokenRegistry smart contract.
*/
public tokenRegistry: TokenRegistryWrapper;
/**
* An instance of the TokenWrapper class containing methods for interacting with any ERC20 token smart contract.
*/
public token: TokenWrapper;
/**
* An instance of the EtherTokenWrapper class containing methods for interacting with the
* wrapped ETH ERC20 token smart contract.
*/
public etherToken: EtherTokenWrapper;
/**
* An instance of the TokenTransferProxyWrapper class containing methods for interacting with the
* tokenTransferProxy smart contract.
*/
public proxy: TokenTransferProxyWrapper;
private _web3Wrapper: Web3Wrapper;
/**
* Instantiates a new ContractWrappers instance.
* @param provider The Provider instance you would like the 0x.js library to use for interacting with
* the Ethereum network.
* @param config The configuration object. Look up the type for the description.
* @return An instance of the ContractWrappers class.
*/
constructor(provider: Provider, config: ContractWrappersConfig) {
assert.isWeb3Provider('provider', provider);
assert.doesConformToSchema('config', config, ContractWrappersConfigSchema, [
contractWrappersPrivateNetworkConfigSchema,
contractWrappersPublicNetworkConfigSchema,
]);
const artifactJSONs = _.values(artifacts);
const abiArrays = _.map(artifactJSONs, artifact => artifact.abi);
const txDefaults = {
gasPrice: config.gasPrice,
};
this._web3Wrapper = new Web3Wrapper(provider, txDefaults);
_.forEach(abiArrays, abi => {
this._web3Wrapper.abiDecoder.addABI(abi);
});
this.proxy = new TokenTransferProxyWrapper(
this._web3Wrapper,
config.networkId,
config.tokenTransferProxyContractAddress,
);
this.token = new TokenWrapper(this._web3Wrapper, config.networkId, this.proxy);
this.exchange = new ExchangeWrapper(
this._web3Wrapper,
config.networkId,
this.token,
config.exchangeContractAddress,
config.zrxContractAddress,
);
this.tokenRegistry = new TokenRegistryWrapper(
this._web3Wrapper,
config.networkId,
config.tokenRegistryContractAddress,
);
this.etherToken = new EtherTokenWrapper(this._web3Wrapper, config.networkId, this.token);
}
/**
* Sets a new web3 provider for 0x.js. Updating the provider will stop all
* subscriptions so you will need to re-subscribe to all events relevant to your app after this call.
* @param provider The Web3Provider you would like the 0x.js library to use from now on.
* @param networkId The id of the network your provider is connected to
*/
public setProvider(provider: Provider, networkId: number): void {
this._web3Wrapper.setProvider(provider);
(this.exchange as any)._invalidateContractInstances();
(this.exchange as any)._setNetworkId(networkId);
(this.tokenRegistry as any)._invalidateContractInstance();
(this.tokenRegistry as any)._setNetworkId(networkId);
(this.token as any)._invalidateContractInstances();
(this.token as any)._setNetworkId(networkId);
(this.proxy as any)._invalidateContractInstance();
(this.proxy as any)._setNetworkId(networkId);
(this.etherToken as any)._invalidateContractInstance();
(this.etherToken as any)._setNetworkId(networkId);
}
/**
* Get the provider instance currently used by 0x.js
* @return Web3 provider instance
*/
public getProvider(): Provider {
return this._web3Wrapper.getProvider();
}
/*
* HACK: `TokenWrapper` needs a token transfer proxy address. `TokenTransferProxy` address is fetched from
* an `ExchangeWrapper`. `ExchangeWrapper` needs `TokenWrapper` to validate orders, creating a dependency cycle.
* In order to break this - we create this function here and pass it as a parameter to the `TokenWrapper`
* and `ProxyWrapper`.
*/
private async _getTokenTransferProxyAddressAsync(): Promise<string> {
const tokenTransferProxyAddress = await (this.exchange as any)._getTokenTransferProxyAddressAsync();
return tokenTransferProxyAddress;
}
}
