1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
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;
}
}
|
