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Diffstat (limited to 'packages/0x.js/src/contract_wrappers/token_wrapper.ts')
| -rw-r--r-- | packages/0x.js/src/contract_wrappers/token_wrapper.ts | 434 |
1 files changed, 0 insertions, 434 deletions
diff --git a/packages/0x.js/src/contract_wrappers/token_wrapper.ts b/packages/0x.js/src/contract_wrappers/token_wrapper.ts deleted file mode 100644 index 194cfb5aa..000000000 --- a/packages/0x.js/src/contract_wrappers/token_wrapper.ts +++ /dev/null @@ -1,434 +0,0 @@ -import { schemas } from '@0xproject/json-schemas'; -import { LogWithDecodedArgs } from '@0xproject/types'; -import { AbiDecoder, BigNumber } from '@0xproject/utils'; -import { Web3Wrapper } from '@0xproject/web3-wrapper'; -import * as _ from 'lodash'; - -import { artifacts } from '../artifacts'; -import { BlockRange, EventCallback, IndexedFilterValues, MethodOpts, TransactionOpts, ZeroExError } from '../types'; -import { assert } from '../utils/assert'; -import { constants } from '../utils/constants'; - -import { ContractWrapper } from './contract_wrapper'; -import { TokenContract, TokenContractEventArgs, TokenEvents } from './generated/token'; -import { TokenTransferProxyWrapper } from './token_transfer_proxy_wrapper'; - -/** - * This class includes all the functionality related to interacting with ERC20 token contracts. - * All ERC20 method calls are supported, along with some convenience methods for getting/setting allowances - * to the 0x Proxy smart contract. - */ -export class TokenWrapper extends ContractWrapper { - public UNLIMITED_ALLOWANCE_IN_BASE_UNITS = constants.UNLIMITED_ALLOWANCE_IN_BASE_UNITS; - private _tokenContractsByAddress: { [address: string]: TokenContract }; - private _tokenTransferProxyWrapper: TokenTransferProxyWrapper; - constructor(web3Wrapper: Web3Wrapper, networkId: number, tokenTransferProxyWrapper: TokenTransferProxyWrapper) { - super(web3Wrapper, networkId); - this._tokenContractsByAddress = {}; - this._tokenTransferProxyWrapper = tokenTransferProxyWrapper; - } - /** - * Retrieves an owner's ERC20 token balance. - * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed. - * @param ownerAddress The hex encoded user Ethereum address whose balance you would like to check. - * @param methodOpts Optional arguments this method accepts. - * @return The owner's ERC20 token balance in base units. - */ - public async getBalanceAsync( - tokenAddress: string, - ownerAddress: string, - methodOpts?: MethodOpts, - ): Promise<BigNumber> { - assert.isETHAddressHex('ownerAddress', ownerAddress); - assert.isETHAddressHex('tokenAddress', tokenAddress); - const normalizedTokenAddress = tokenAddress.toLowerCase(); - const normalizedOwnerAddress = ownerAddress.toLowerCase(); - - const tokenContract = await this._getTokenContractAsync(normalizedTokenAddress); - const defaultBlock = _.isUndefined(methodOpts) ? undefined : methodOpts.defaultBlock; - const txData = {}; - let balance = await tokenContract.balanceOf.callAsync(normalizedOwnerAddress, txData, defaultBlock); - // Wrap BigNumbers returned from web3 with our own (later) version of BigNumber - balance = new BigNumber(balance); - return balance; - } - /** - * Sets the spender's allowance to a specified number of baseUnits on behalf of the owner address. - * Equivalent to the ERC20 spec method `approve`. - * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed. - * @param ownerAddress The hex encoded user Ethereum address who would like to set an allowance - * for spenderAddress. - * @param spenderAddress The hex encoded user Ethereum address who will be able to spend the set allowance. - * @param amountInBaseUnits The allowance amount you would like to set. - * @param txOpts Transaction parameters. - * @return Transaction hash. - */ - public async setAllowanceAsync( - tokenAddress: string, - ownerAddress: string, - spenderAddress: string, - amountInBaseUnits: BigNumber, - txOpts: TransactionOpts = {}, - ): Promise<string> { - assert.isETHAddressHex('spenderAddress', spenderAddress); - assert.isETHAddressHex('tokenAddress', tokenAddress); - await assert.isSenderAddressAsync('ownerAddress', ownerAddress, this._web3Wrapper); - const normalizedTokenAddress = tokenAddress.toLowerCase(); - const normalizedSpenderAddress = spenderAddress.toLowerCase(); - const normalizedOwnerAddress = ownerAddress.toLowerCase(); - assert.isValidBaseUnitAmount('amountInBaseUnits', amountInBaseUnits); - - const tokenContract = await this._getTokenContractAsync(normalizedTokenAddress); - const txHash = await tokenContract.approve.sendTransactionAsync(normalizedSpenderAddress, amountInBaseUnits, { - from: normalizedOwnerAddress, - gas: txOpts.gasLimit, - gasPrice: txOpts.gasPrice, - }); - return txHash; - } - /** - * Sets the spender's allowance to an unlimited number of baseUnits on behalf of the owner address. - * Equivalent to the ERC20 spec method `approve`. - * Setting an unlimited allowance will lower the gas cost for filling orders involving tokens that forego updating - * allowances set to the max amount (e.g ZRX, WETH) - * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed. - * @param ownerAddress The hex encoded user Ethereum address who would like to set an allowance - * for spenderAddress. - * @param spenderAddress The hex encoded user Ethereum address who will be able to spend the set allowance. - * @param txOpts Transaction parameters. - * @return Transaction hash. - */ - public async setUnlimitedAllowanceAsync( - tokenAddress: string, - ownerAddress: string, - spenderAddress: string, - txOpts: TransactionOpts = {}, - ): Promise<string> { - assert.isETHAddressHex('ownerAddress', ownerAddress); - assert.isETHAddressHex('tokenAddress', tokenAddress); - assert.isETHAddressHex('spenderAddress', spenderAddress); - const normalizedTokenAddress = tokenAddress.toLowerCase(); - const normalizedOwnerAddress = ownerAddress.toLowerCase(); - const normalizedSpenderAddress = spenderAddress.toLowerCase(); - const txHash = await this.setAllowanceAsync( - normalizedTokenAddress, - normalizedOwnerAddress, - normalizedSpenderAddress, - this.UNLIMITED_ALLOWANCE_IN_BASE_UNITS, - txOpts, - ); - return txHash; - } - /** - * Retrieves the owners allowance in baseUnits set to the spender's address. - * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed. - * @param ownerAddress The hex encoded user Ethereum address whose allowance to spenderAddress - * you would like to retrieve. - * @param spenderAddress The hex encoded user Ethereum address who can spend the allowance you are fetching. - * @param methodOpts Optional arguments this method accepts. - */ - public async getAllowanceAsync( - tokenAddress: string, - ownerAddress: string, - spenderAddress: string, - methodOpts?: MethodOpts, - ): Promise<BigNumber> { - assert.isETHAddressHex('ownerAddress', ownerAddress); - assert.isETHAddressHex('tokenAddress', tokenAddress); - assert.isETHAddressHex('spenderAddress', spenderAddress); - const normalizedTokenAddress = tokenAddress.toLowerCase(); - const normalizedOwnerAddress = ownerAddress.toLowerCase(); - const normalizedSpenderAddress = spenderAddress.toLowerCase(); - - const tokenContract = await this._getTokenContractAsync(normalizedTokenAddress); - const defaultBlock = _.isUndefined(methodOpts) ? undefined : methodOpts.defaultBlock; - const txData = {}; - let allowanceInBaseUnits = await tokenContract.allowance.callAsync( - normalizedOwnerAddress, - normalizedSpenderAddress, - txData, - defaultBlock, - ); - // Wrap BigNumbers returned from web3 with our own (later) version of BigNumber - allowanceInBaseUnits = new BigNumber(allowanceInBaseUnits); - return allowanceInBaseUnits; - } - /** - * Retrieves the owner's allowance in baseUnits set to the 0x proxy contract. - * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed. - * @param ownerAddress The hex encoded user Ethereum address whose proxy contract allowance we are retrieving. - * @param methodOpts Optional arguments this method accepts. - */ - public async getProxyAllowanceAsync( - tokenAddress: string, - ownerAddress: string, - methodOpts?: MethodOpts, - ): Promise<BigNumber> { - assert.isETHAddressHex('ownerAddress', ownerAddress); - assert.isETHAddressHex('tokenAddress', tokenAddress); - const normalizedTokenAddress = tokenAddress.toLowerCase(); - const normalizedOwnerAddress = ownerAddress.toLowerCase(); - - const proxyAddress = this._tokenTransferProxyWrapper.getContractAddress(); - const allowanceInBaseUnits = await this.getAllowanceAsync( - normalizedTokenAddress, - normalizedOwnerAddress, - proxyAddress, - methodOpts, - ); - return allowanceInBaseUnits; - } - /** - * Sets the 0x proxy contract's allowance to a specified number of a tokens' baseUnits on behalf - * of an owner address. - * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed. - * @param ownerAddress The hex encoded user Ethereum address who is setting an allowance - * for the Proxy contract. - * @param amountInBaseUnits The allowance amount specified in baseUnits. - * @param txOpts Transaction parameters. - * @return Transaction hash. - */ - public async setProxyAllowanceAsync( - tokenAddress: string, - ownerAddress: string, - amountInBaseUnits: BigNumber, - txOpts: TransactionOpts = {}, - ): Promise<string> { - assert.isETHAddressHex('ownerAddress', ownerAddress); - assert.isETHAddressHex('tokenAddress', tokenAddress); - const normalizedTokenAddress = tokenAddress.toLowerCase(); - const normalizedOwnerAddress = ownerAddress.toLowerCase(); - assert.isValidBaseUnitAmount('amountInBaseUnits', amountInBaseUnits); - - const proxyAddress = this._tokenTransferProxyWrapper.getContractAddress(); - const txHash = await this.setAllowanceAsync( - normalizedTokenAddress, - normalizedOwnerAddress, - proxyAddress, - amountInBaseUnits, - txOpts, - ); - return txHash; - } - /** - * Sets the 0x proxy contract's allowance to a unlimited number of a tokens' baseUnits on behalf - * of an owner address. - * Setting an unlimited allowance will lower the gas cost for filling orders involving tokens that forego updating - * allowances set to the max amount (e.g ZRX, WETH) - * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed. - * @param ownerAddress The hex encoded user Ethereum address who is setting an allowance - * for the Proxy contract. - * @param txOpts Transaction parameters. - * @return Transaction hash. - */ - public async setUnlimitedProxyAllowanceAsync( - tokenAddress: string, - ownerAddress: string, - txOpts: TransactionOpts = {}, - ): Promise<string> { - assert.isETHAddressHex('ownerAddress', ownerAddress); - assert.isETHAddressHex('tokenAddress', tokenAddress); - const normalizedTokenAddress = tokenAddress.toLowerCase(); - const normalizedOwnerAddress = ownerAddress.toLowerCase(); - const txHash = await this.setProxyAllowanceAsync( - normalizedTokenAddress, - normalizedOwnerAddress, - this.UNLIMITED_ALLOWANCE_IN_BASE_UNITS, - txOpts, - ); - return txHash; - } - /** - * Transfers `amountInBaseUnits` ERC20 tokens from `fromAddress` to `toAddress`. - * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed. - * @param fromAddress The hex encoded user Ethereum address that will send the funds. - * @param toAddress The hex encoded user Ethereum address that will receive the funds. - * @param amountInBaseUnits The amount (specified in baseUnits) of the token to transfer. - * @param txOpts Transaction parameters. - * @return Transaction hash. - */ - public async transferAsync( - tokenAddress: string, - fromAddress: string, - toAddress: string, - amountInBaseUnits: BigNumber, - txOpts: TransactionOpts = {}, - ): Promise<string> { - assert.isETHAddressHex('tokenAddress', tokenAddress); - assert.isETHAddressHex('toAddress', toAddress); - await assert.isSenderAddressAsync('fromAddress', fromAddress, this._web3Wrapper); - const normalizedTokenAddress = tokenAddress.toLowerCase(); - const normalizedFromAddress = fromAddress.toLowerCase(); - const normalizedToAddress = toAddress.toLowerCase(); - assert.isValidBaseUnitAmount('amountInBaseUnits', amountInBaseUnits); - - const tokenContract = await this._getTokenContractAsync(normalizedTokenAddress); - - const fromAddressBalance = await this.getBalanceAsync(normalizedTokenAddress, normalizedFromAddress); - if (fromAddressBalance.lessThan(amountInBaseUnits)) { - throw new Error(ZeroExError.InsufficientBalanceForTransfer); - } - - const txHash = await tokenContract.transfer.sendTransactionAsync(normalizedToAddress, amountInBaseUnits, { - from: normalizedFromAddress, - gas: txOpts.gasLimit, - gasPrice: txOpts.gasPrice, - }); - return txHash; - } - /** - * Transfers `amountInBaseUnits` ERC20 tokens from `fromAddress` to `toAddress`. - * Requires the fromAddress to have sufficient funds and to have approved an allowance of - * `amountInBaseUnits` to `senderAddress`. - * @param tokenAddress The hex encoded contract Ethereum address where the ERC20 token is deployed. - * @param fromAddress The hex encoded user Ethereum address whose funds are being sent. - * @param toAddress The hex encoded user Ethereum address that will receive the funds. - * @param senderAddress The hex encoded user Ethereum address whose initiates the fund transfer. The - * `fromAddress` must have set an allowance to the `senderAddress` - * before this call. - * @param amountInBaseUnits The amount (specified in baseUnits) of the token to transfer. - * @param txOpts Transaction parameters. - * @return Transaction hash. - */ - public async transferFromAsync( - tokenAddress: string, - fromAddress: string, - toAddress: string, - senderAddress: string, - amountInBaseUnits: BigNumber, - txOpts: TransactionOpts = {}, - ): Promise<string> { - assert.isETHAddressHex('toAddress', toAddress); - assert.isETHAddressHex('fromAddress', fromAddress); - assert.isETHAddressHex('tokenAddress', tokenAddress); - await assert.isSenderAddressAsync('senderAddress', senderAddress, this._web3Wrapper); - const normalizedToAddress = toAddress.toLowerCase(); - const normalizedFromAddress = fromAddress.toLowerCase(); - const normalizedTokenAddress = tokenAddress.toLowerCase(); - const normalizedSenderAddress = senderAddress.toLowerCase(); - assert.isValidBaseUnitAmount('amountInBaseUnits', amountInBaseUnits); - - const tokenContract = await this._getTokenContractAsync(normalizedTokenAddress); - - const fromAddressAllowance = await this.getAllowanceAsync( - normalizedTokenAddress, - normalizedFromAddress, - normalizedSenderAddress, - ); - if (fromAddressAllowance.lessThan(amountInBaseUnits)) { - throw new Error(ZeroExError.InsufficientAllowanceForTransfer); - } - - const fromAddressBalance = await this.getBalanceAsync(normalizedTokenAddress, normalizedFromAddress); - if (fromAddressBalance.lessThan(amountInBaseUnits)) { - throw new Error(ZeroExError.InsufficientBalanceForTransfer); - } - - const txHash = await tokenContract.transferFrom.sendTransactionAsync( - normalizedFromAddress, - normalizedToAddress, - amountInBaseUnits, - { - from: normalizedSenderAddress, - gas: txOpts.gasLimit, - gasPrice: txOpts.gasPrice, - }, - ); - return txHash; - } - /** - * Subscribe to an event type emitted by the Token contract. - * @param tokenAddress The hex encoded address where the ERC20 token is deployed. - * @param eventName The token contract event you would like to subscribe to. - * @param indexFilterValues An object where the keys are indexed args returned by the event and - * the value is the value you are interested in. E.g `{maker: aUserAddressHex}` - * @param callback Callback that gets called when a log is added/removed - * @return Subscription token used later to unsubscribe - */ - public subscribe<ArgsType extends TokenContractEventArgs>( - tokenAddress: string, - eventName: TokenEvents, - indexFilterValues: IndexedFilterValues, - callback: EventCallback<ArgsType>, - ): string { - assert.isETHAddressHex('tokenAddress', tokenAddress); - const normalizedTokenAddress = tokenAddress.toLowerCase(); - assert.doesBelongToStringEnum('eventName', eventName, TokenEvents); - assert.doesConformToSchema('indexFilterValues', indexFilterValues, schemas.indexFilterValuesSchema); - assert.isFunction('callback', callback); - const subscriptionToken = this._subscribe<ArgsType>( - normalizedTokenAddress, - eventName, - indexFilterValues, - artifacts.TokenArtifact.abi, - callback, - ); - return subscriptionToken; - } - /** - * Cancel a subscription - * @param subscriptionToken Subscription token returned by `subscribe()` - */ - public unsubscribe(subscriptionToken: string): void { - this._unsubscribe(subscriptionToken); - } - /** - * Cancels all existing subscriptions - */ - public unsubscribeAll(): void { - super._unsubscribeAll(); - } - /** - * Gets historical logs without creating a subscription - * @param tokenAddress An address of the token that emitted the logs. - * @param eventName The token contract event you would like to subscribe to. - * @param blockRange Block range to get logs from. - * @param indexFilterValues An object where the keys are indexed args returned by the event and - * the value is the value you are interested in. E.g `{_from: aUserAddressHex}` - * @return Array of logs that match the parameters - */ - public async getLogsAsync<ArgsType extends TokenContractEventArgs>( - tokenAddress: string, - eventName: TokenEvents, - blockRange: BlockRange, - indexFilterValues: IndexedFilterValues, - ): Promise<Array<LogWithDecodedArgs<ArgsType>>> { - assert.isETHAddressHex('tokenAddress', tokenAddress); - const normalizedTokenAddress = tokenAddress.toLowerCase(); - assert.doesBelongToStringEnum('eventName', eventName, TokenEvents); - assert.doesConformToSchema('blockRange', blockRange, schemas.blockRangeSchema); - assert.doesConformToSchema('indexFilterValues', indexFilterValues, schemas.indexFilterValuesSchema); - const logs = await this._getLogsAsync<ArgsType>( - normalizedTokenAddress, - eventName, - blockRange, - indexFilterValues, - artifacts.TokenArtifact.abi, - ); - return logs; - } - private _invalidateContractInstances(): void { - this.unsubscribeAll(); - this._tokenContractsByAddress = {}; - } - private async _getTokenContractAsync(tokenAddress: string): Promise<TokenContract> { - const normalizedTokenAddress = tokenAddress.toLowerCase(); - let tokenContract = this._tokenContractsByAddress[normalizedTokenAddress]; - if (!_.isUndefined(tokenContract)) { - return tokenContract; - } - const [abi, address] = await this._getContractAbiAndAddressFromArtifactsAsync( - artifacts.TokenArtifact, - normalizedTokenAddress, - ); - const contractInstance = new TokenContract( - abi, - address, - this._web3Wrapper.getProvider(), - this._web3Wrapper.getContractDefaults(), - ); - tokenContract = contractInstance; - this._tokenContractsByAddress[normalizedTokenAddress] = tokenContract; - return tokenContract; - } -} |