diff options
Diffstat (limited to 'packages/contract-wrappers/src/contract_wrappers/token_registry_wrapper.ts')
-rw-r--r-- | packages/contract-wrappers/src/contract_wrappers/token_registry_wrapper.ts | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/packages/contract-wrappers/src/contract_wrappers/token_registry_wrapper.ts b/packages/contract-wrappers/src/contract_wrappers/token_registry_wrapper.ts deleted file mode 100644 index 7b558ed69..000000000 --- a/packages/contract-wrappers/src/contract_wrappers/token_registry_wrapper.ts +++ /dev/null @@ -1,133 +0,0 @@ -import { ContractAbi, Token } from '@0xproject/types'; -import { Web3Wrapper } from '@0xproject/web3-wrapper'; -import * as _ from 'lodash'; - -import { artifacts } from '../artifacts'; -import { TokenMetadata } from '../types'; -import { assert } from '../utils/assert'; -import { constants } from '../utils/constants'; - -import { ContractWrapper } from './contract_wrapper'; -import { TokenRegistryContract } from './generated/token_registry'; - -/** - * This class includes all the functionality related to interacting with the 0x Token Registry smart contract. - */ -export class TokenRegistryWrapper extends ContractWrapper { - public abi: ContractAbi = artifacts.TokenRegistry.abi; - private _tokenRegistryContractIfExists?: TokenRegistryContract; - private _contractAddressIfExists?: string; - private static _createTokenFromMetadata(metadata: TokenMetadata): Token | undefined { - if (metadata[0] === constants.NULL_ADDRESS) { - return undefined; - } - const token = { - address: metadata[0], - name: metadata[1], - symbol: metadata[2], - decimals: metadata[3], - }; - return token; - } - constructor(web3Wrapper: Web3Wrapper, networkId: number, contractAddressIfExists?: string) { - super(web3Wrapper, networkId); - this._contractAddressIfExists = contractAddressIfExists; - } - /** - * Retrieves all the tokens currently listed in the Token Registry smart contract - * @return An array of objects that conform to the Token interface. - */ - public async getTokensAsync(): Promise<Token[]> { - const addresses = await this.getTokenAddressesAsync(); - const tokenPromises: Array<Promise<Token | undefined>> = _.map(addresses, async (address: string) => - this.getTokenIfExistsAsync(address), - ); - const tokens = await Promise.all(tokenPromises); - return tokens as Token[]; - } - /** - * Retrieves all the addresses of the tokens currently listed in the Token Registry smart contract - * @return An array of token addresses. - */ - public async getTokenAddressesAsync(): Promise<string[]> { - const tokenRegistryContract = await this._getTokenRegistryContractAsync(); - const addresses = await tokenRegistryContract.getTokenAddresses.callAsync(); - const lowerCaseAddresses = _.map(addresses, address => address.toLowerCase()); - return lowerCaseAddresses; - } - /** - * Retrieves a token by address currently listed in the Token Registry smart contract - * @return An object that conforms to the Token interface or undefined if token not found. - */ - public async getTokenIfExistsAsync(address: string): Promise<Token | undefined> { - assert.isETHAddressHex('address', address); - const normalizedAddress = address.toLowerCase(); - - const tokenRegistryContract = await this._getTokenRegistryContractAsync(); - const metadata = await tokenRegistryContract.getTokenMetaData.callAsync(normalizedAddress); - const token = TokenRegistryWrapper._createTokenFromMetadata(metadata); - return token; - } - public async getTokenAddressBySymbolIfExistsAsync(symbol: string): Promise<string | undefined> { - assert.isString('symbol', symbol); - const tokenRegistryContract = await this._getTokenRegistryContractAsync(); - const addressIfExists = await tokenRegistryContract.getTokenAddressBySymbol.callAsync(symbol); - if (addressIfExists === constants.NULL_ADDRESS) { - return undefined; - } - return addressIfExists; - } - public async getTokenAddressByNameIfExistsAsync(name: string): Promise<string | undefined> { - assert.isString('name', name); - const tokenRegistryContract = await this._getTokenRegistryContractAsync(); - const addressIfExists = await tokenRegistryContract.getTokenAddressByName.callAsync(name); - if (addressIfExists === constants.NULL_ADDRESS) { - return undefined; - } - return addressIfExists; - } - public async getTokenBySymbolIfExistsAsync(symbol: string): Promise<Token | undefined> { - assert.isString('symbol', symbol); - const tokenRegistryContract = await this._getTokenRegistryContractAsync(); - const metadata = await tokenRegistryContract.getTokenBySymbol.callAsync(symbol); - const token = TokenRegistryWrapper._createTokenFromMetadata(metadata); - return token; - } - public async getTokenByNameIfExistsAsync(name: string): Promise<Token | undefined> { - assert.isString('name', name); - const tokenRegistryContract = await this._getTokenRegistryContractAsync(); - const metadata = await tokenRegistryContract.getTokenByName.callAsync(name); - const token = TokenRegistryWrapper._createTokenFromMetadata(metadata); - return token; - } - /** - * Retrieves the Ethereum address of the TokenRegistry contract deployed on the network - * that the user-passed web3 provider is connected to. - * @returns The Ethereum address of the TokenRegistry contract being used. - */ - public getContractAddress(): string { - const contractAddress = this._getContractAddress(artifacts.TokenRegistry, this._contractAddressIfExists); - return contractAddress; - } - // tslint:disable-next-line:no-unused-variable - private _invalidateContractInstance(): void { - delete this._tokenRegistryContractIfExists; - } - private async _getTokenRegistryContractAsync(): Promise<TokenRegistryContract> { - if (!_.isUndefined(this._tokenRegistryContractIfExists)) { - return this._tokenRegistryContractIfExists; - } - const [abi, address] = await this._getContractAbiAndAddressFromArtifactsAsync( - artifacts.TokenRegistry, - this._contractAddressIfExists, - ); - const contractInstance = new TokenRegistryContract( - abi, - address, - this._web3Wrapper.getProvider(), - this._web3Wrapper.getContractDefaults(), - ); - this._tokenRegistryContractIfExists = contractInstance; - return this._tokenRegistryContractIfExists; - } -} |