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-rw-r--r--packages/0x.js/src/0x.ts333
-rw-r--r--packages/0x.js/src/artifacts.ts14
-rw-r--r--packages/0x.js/src/artifacts/EtherToken.json445
-rw-r--r--packages/0x.js/src/artifacts/Exchange.json1130
-rw-r--r--packages/0x.js/src/artifacts/Token.json176
-rw-r--r--packages/0x.js/src/artifacts/TokenRegistry.json1211
-rw-r--r--packages/0x.js/src/artifacts/TokenTransferProxy.json174
-rw-r--r--packages/0x.js/src/bignumber_config.ts11
-rw-r--r--packages/0x.js/src/contract.ts80
-rw-r--r--packages/0x.js/src/contract_wrappers/contract_wrapper.ts152
-rw-r--r--packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts87
-rw-r--r--packages/0x.js/src/contract_wrappers/exchange_wrapper.ts866
-rw-r--r--packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts122
-rw-r--r--packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts60
-rw-r--r--packages/0x.js/src/contract_wrappers/token_wrapper.ts313
-rw-r--r--packages/0x.js/src/globals.d.ts80
-rw-r--r--packages/0x.js/src/globalsAugment.d.ts23
-rw-r--r--packages/0x.js/src/index.ts45
-rw-r--r--packages/0x.js/src/order_watcher/event_watcher.ts88
-rw-r--r--packages/0x.js/src/order_watcher/order_state_watcher.ts232
-rw-r--r--packages/0x.js/src/schemas/zero_ex_config_schema.ts23
-rw-r--r--packages/0x.js/src/stores/balance_proxy_allowance_lazy_store.ts82
-rw-r--r--packages/0x.js/src/stores/order_filled_cancelled_lazy_store.ts61
-rw-r--r--packages/0x.js/src/subproviders/empty_wallet_subprovider.ts24
-rw-r--r--packages/0x.js/src/types.ts525
-rw-r--r--packages/0x.js/src/utils/abi_decoder.ts68
-rw-r--r--packages/0x.js/src/utils/assert.ts101
-rw-r--r--packages/0x.js/src/utils/constants.ts11
-rw-r--r--packages/0x.js/src/utils/decorators.ts35
-rw-r--r--packages/0x.js/src/utils/exchange_transfer_simulator.ts88
-rw-r--r--packages/0x.js/src/utils/filter_utils.ts82
-rw-r--r--packages/0x.js/src/utils/interval_utils.ts20
-rw-r--r--packages/0x.js/src/utils/order_state_utils.ts119
-rw-r--r--packages/0x.js/src/utils/order_validation_utils.ts166
-rw-r--r--packages/0x.js/src/utils/signature_utils.ts44
-rw-r--r--packages/0x.js/src/utils/utils.ts55
-rw-r--r--packages/0x.js/src/web3_wrapper.ts172
37 files changed, 7318 insertions, 0 deletions
diff --git a/packages/0x.js/src/0x.ts b/packages/0x.js/src/0x.ts
new file mode 100644
index 000000000..fe765bbbe
--- /dev/null
+++ b/packages/0x.js/src/0x.ts
@@ -0,0 +1,333 @@
+import * as _ from 'lodash';
+import BigNumber from 'bignumber.js';
+import {SchemaValidator, schemas} from '0x-json-schemas';
+import {bigNumberConfigs} from './bignumber_config';
+import * as ethUtil from 'ethereumjs-util';
+import {Web3Wrapper} from './web3_wrapper';
+import {constants} from './utils/constants';
+import {utils} from './utils/utils';
+import {signatureUtils} from './utils/signature_utils';
+import {assert} from './utils/assert';
+import {AbiDecoder} from './utils/abi_decoder';
+import {intervalUtils} from './utils/interval_utils';
+import {artifacts} from './artifacts';
+import {ExchangeWrapper} from './contract_wrappers/exchange_wrapper';
+import {TokenRegistryWrapper} from './contract_wrappers/token_registry_wrapper';
+import {EtherTokenWrapper} from './contract_wrappers/ether_token_wrapper';
+import {TokenWrapper} from './contract_wrappers/token_wrapper';
+import {TokenTransferProxyWrapper} from './contract_wrappers/token_transfer_proxy_wrapper';
+import {OrderStateWatcher} from './order_watcher/order_state_watcher';
+import {OrderStateUtils} from './utils/order_state_utils';
+import {
+ ECSignature,
+ ZeroExError,
+ Order,
+ SignedOrder,
+ Web3Provider,
+ ZeroExConfig,
+ OrderStateWatcherConfig,
+ TransactionReceiptWithDecodedLogs,
+} from './types';
+import {zeroExConfigSchema} from './schemas/zero_ex_config_schema';
+
+// Customize our BigNumber instances
+bigNumberConfigs.configure();
+
+/**
+ * The ZeroEx class is the single entry-point into the 0x.js library. It contains all of the library's functionality
+ * and all calls to the library should be made through a ZeroEx instance.
+ */
+export class ZeroEx {
+ /**
+ * When creating an order without a specified taker or feeRecipient you must supply the Solidity
+ * address null type (as opposed to Javascripts `null`, `undefined` or empty string). We expose
+ * this constant for your convenience.
+ */
+ public static NULL_ADDRESS = constants.NULL_ADDRESS;
+
+ /**
+ * 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;
+ /**
+ * An instance of the OrderStateWatcher class containing methods for watching a set of orders for relevant
+ * blockchain state changes.
+ */
+ public orderStateWatcher: OrderStateWatcher;
+ private _web3Wrapper: Web3Wrapper;
+ private _abiDecoder: AbiDecoder;
+ /**
+ * Verifies that the elliptic curve signature `signature` was generated
+ * by signing `data` with the private key corresponding to the `signerAddress` address.
+ * @param data The hex encoded data signed by the supplied signature.
+ * @param signature An object containing the elliptic curve signature parameters.
+ * @param signerAddress The hex encoded address that signed the data, producing the supplied signature.
+ * @return Whether the signature is valid for the supplied signerAddress and data.
+ */
+ public static isValidSignature(data: string, signature: ECSignature, signerAddress: string): boolean {
+ assert.isHexString('data', data);
+ assert.doesConformToSchema('signature', signature, schemas.ecSignatureSchema);
+ assert.isETHAddressHex('signerAddress', signerAddress);
+
+ const isValidSignature = signatureUtils.isValidSignature(data, signature, signerAddress);
+ return isValidSignature;
+ }
+ /**
+ * Generates a pseudo-random 256-bit salt.
+ * The salt can be included in an 0x order, ensuring that the order generates a unique orderHash
+ * and will not collide with other outstanding orders that are identical in all other parameters.
+ * @return A pseudo-random 256-bit number that can be used as a salt.
+ */
+ public static generatePseudoRandomSalt(): BigNumber {
+ // BigNumber.random returns a pseudo-random number between 0 & 1 with a passed in number of decimal places.
+ // Source: https://mikemcl.github.io/bignumber.js/#random
+ const randomNumber = BigNumber.random(constants.MAX_DIGITS_IN_UNSIGNED_256_INT);
+ const factor = new BigNumber(10).pow(constants.MAX_DIGITS_IN_UNSIGNED_256_INT - 1);
+ const salt = randomNumber.times(factor).round();
+ return salt;
+ }
+ /**
+ * Checks if the supplied hex encoded order hash is valid.
+ * Note: Valid means it has the expected format, not that an order with the orderHash exists.
+ * Use this method when processing orderHashes submitted as user input.
+ * @param orderHash Hex encoded orderHash.
+ * @return Whether the supplied orderHash has the expected format.
+ */
+ public static isValidOrderHash(orderHash: string): boolean {
+ // Since this method can be called to check if any arbitrary string conforms to an orderHash's
+ // format, we only assert that we were indeed passed a string.
+ assert.isString('orderHash', orderHash);
+ const schemaValidator = new SchemaValidator();
+ const isValidOrderHash = schemaValidator.validate(orderHash, schemas.orderHashSchema).valid;
+ return isValidOrderHash;
+ }
+ /**
+ * A unit amount is defined as the amount of a token above the specified decimal places (integer part).
+ * E.g: If a currency has 18 decimal places, 1e18 or one quintillion of the currency is equivalent
+ * to 1 unit.
+ * @param amount The amount in baseUnits that you would like converted to units.
+ * @param decimals The number of decimal places the unit amount has.
+ * @return The amount in units.
+ */
+ public static toUnitAmount(amount: BigNumber, decimals: number): BigNumber {
+ assert.isBigNumber('amount', amount);
+ assert.isNumber('decimals', decimals);
+
+ const aUnit = new BigNumber(10).pow(decimals);
+ const unit = amount.div(aUnit);
+ return unit;
+ }
+ /**
+ * A baseUnit is defined as the smallest denomination of a token. An amount expressed in baseUnits
+ * is the amount expressed in the smallest denomination.
+ * E.g: 1 unit of a token with 18 decimal places is expressed in baseUnits as 1000000000000000000
+ * @param amount The amount of units that you would like converted to baseUnits.
+ * @param decimals The number of decimal places the unit amount has.
+ * @return The amount in baseUnits.
+ */
+ public static toBaseUnitAmount(amount: BigNumber, decimals: number): BigNumber {
+ assert.isBigNumber('amount', amount);
+ assert.isNumber('decimals', decimals);
+
+ const unit = new BigNumber(10).pow(decimals);
+ const baseUnitAmount = amount.times(unit);
+ return baseUnitAmount;
+ }
+ /**
+ * Computes the orderHash for a supplied order.
+ * @param order An object that conforms to the Order or SignedOrder interface definitions.
+ * @return The resulting orderHash from hashing the supplied order.
+ */
+ public static getOrderHashHex(order: Order|SignedOrder): string {
+ assert.doesConformToSchema('order', order, schemas.orderSchema);
+ const orderHashHex = utils.getOrderHashHex(order);
+ return orderHashHex;
+ }
+ /**
+ * Instantiates a new ZeroEx instance that provides the public interface to the 0x.js library.
+ * @param provider The Web3.js 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 0x.js ZeroEx class.
+ */
+ constructor(provider: Web3Provider, config?: ZeroExConfig) {
+ assert.isWeb3Provider('provider', provider);
+ if (!_.isUndefined(config)) {
+ assert.doesConformToSchema('config', config, zeroExConfigSchema);
+ }
+ const artifactJSONs = _.values(artifacts);
+ const abiArrays = _.map(artifactJSONs, artifact => artifact.abi);
+ this._abiDecoder = new AbiDecoder(abiArrays);
+ const gasPrice = _.isUndefined(config) ? undefined : config.gasPrice;
+ const defaults = {
+ gasPrice,
+ };
+ this._web3Wrapper = new Web3Wrapper(provider, defaults);
+ this.token = new TokenWrapper(
+ this._web3Wrapper,
+ this._abiDecoder,
+ this._getTokenTransferProxyAddressAsync.bind(this),
+ );
+ const exchageContractAddressIfExists = _.isUndefined(config) ? undefined : config.exchangeContractAddress;
+ this.exchange = new ExchangeWrapper(
+ this._web3Wrapper,
+ this._abiDecoder,
+ this.token,
+ exchageContractAddressIfExists,
+ );
+ this.proxy = new TokenTransferProxyWrapper(
+ this._web3Wrapper,
+ this._getTokenTransferProxyAddressAsync.bind(this),
+ );
+ const tokenRegistryContractAddressIfExists = _.isUndefined(config) ?
+ undefined :
+ config.tokenRegistryContractAddress;
+ this.tokenRegistry = new TokenRegistryWrapper(this._web3Wrapper, tokenRegistryContractAddressIfExists);
+ const etherTokenContractAddressIfExists = _.isUndefined(config) ? undefined : config.etherTokenContractAddress;
+ this.etherToken = new EtherTokenWrapper(this._web3Wrapper, this.token, etherTokenContractAddressIfExists);
+ const orderWatcherConfig = _.isUndefined(config) ? undefined : config.orderWatcherConfig;
+ this.orderStateWatcher = new OrderStateWatcher(
+ this._web3Wrapper, this._abiDecoder, this.token, this.exchange, orderWatcherConfig,
+ );
+ }
+ /**
+ * 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.
+ */
+ public async setProviderAsync(provider: Web3Provider) {
+ this._web3Wrapper.setProvider(provider);
+ await (this.exchange as any)._invalidateContractInstancesAsync();
+ (this.tokenRegistry as any)._invalidateContractInstance();
+ await (this.token as any)._invalidateContractInstancesAsync();
+ (this.proxy as any)._invalidateContractInstance();
+ (this.etherToken as any)._invalidateContractInstance();
+ }
+ /**
+ * Get user Ethereum addresses available through the supplied web3 provider available for sending transactions.
+ * @return An array of available user Ethereum addresses.
+ */
+ public async getAvailableAddressesAsync(): Promise<string[]> {
+ const availableAddresses = await this._web3Wrapper.getAvailableAddressesAsync();
+ return availableAddresses;
+ }
+ /**
+ * Signs an orderHash and returns it's elliptic curve signature.
+ * This method currently supports TestRPC, Geth and Parity above and below V1.6.6
+ * @param orderHash Hex encoded orderHash to sign.
+ * @param signerAddress The hex encoded Ethereum address you wish to sign it with. This address
+ * must be available via the Web3.Provider supplied to 0x.js.
+ * @return An object containing the Elliptic curve signature parameters generated by signing the orderHash.
+ */
+ public async signOrderHashAsync(orderHash: string, signerAddress: string): Promise<ECSignature> {
+ assert.isHexString('orderHash', orderHash);
+ await assert.isSenderAddressAsync('signerAddress', signerAddress, this._web3Wrapper);
+
+ let msgHashHex;
+ const nodeVersion = await this._web3Wrapper.getNodeVersionAsync();
+ const isParityNode = utils.isParityNode(nodeVersion);
+ const isTestRpc = utils.isTestRpc(nodeVersion);
+ if (isParityNode || isTestRpc) {
+ // Parity and TestRpc nodes add the personalMessage prefix itself
+ msgHashHex = orderHash;
+ } else {
+ const orderHashBuff = ethUtil.toBuffer(orderHash);
+ const msgHashBuff = ethUtil.hashPersonalMessage(orderHashBuff);
+ msgHashHex = ethUtil.bufferToHex(msgHashBuff);
+ }
+
+ const signature = await this._web3Wrapper.signTransactionAsync(signerAddress, msgHashHex);
+
+ // HACK: There is no consensus on whether the signatureHex string should be formatted as
+ // v + r + s OR r + s + v, and different clients (even different versions of the same client)
+ // return the signature params in different orders. In order to support all client implementations,
+ // we parse the signature in both ways, and evaluate if either one is a valid signature.
+ const validVParamValues = [27, 28];
+ const ecSignatureVRS = signatureUtils.parseSignatureHexAsVRS(signature);
+ if (_.includes(validVParamValues, ecSignatureVRS.v)) {
+ const isValidVRSSignature = ZeroEx.isValidSignature(orderHash, ecSignatureVRS, signerAddress);
+ if (isValidVRSSignature) {
+ return ecSignatureVRS;
+ }
+ }
+
+ const ecSignatureRSV = signatureUtils.parseSignatureHexAsRSV(signature);
+ if (_.includes(validVParamValues, ecSignatureRSV.v)) {
+ const isValidRSVSignature = ZeroEx.isValidSignature(orderHash, ecSignatureRSV, signerAddress);
+ if (isValidRSVSignature) {
+ return ecSignatureRSV;
+ }
+ }
+
+ throw new Error(ZeroExError.InvalidSignature);
+ }
+ /**
+ * Waits for a transaction to be mined and returns the transaction receipt.
+ * @param txHash Transaction hash
+ * @param pollingIntervalMs How often (in ms) should we check if the transaction is mined.
+ * @param timeoutMs How long (in ms) to poll for transaction mined until aborting.
+ * @return Transaction receipt with decoded log args.
+ */
+ public async awaitTransactionMinedAsync(
+ txHash: string, pollingIntervalMs = 1000, timeoutMs?: number): Promise<TransactionReceiptWithDecodedLogs> {
+ let timeoutExceeded = false;
+ if (timeoutMs) {
+ setTimeout(() => timeoutExceeded = true, timeoutMs);
+ }
+
+ const txReceiptPromise = new Promise(
+ (resolve: (receipt: TransactionReceiptWithDecodedLogs) => void, reject) => {
+ const intervalId = intervalUtils.setAsyncExcludingInterval(async () => {
+ if (timeoutExceeded) {
+ intervalUtils.clearAsyncExcludingInterval(intervalId);
+ return reject(ZeroExError.TransactionMiningTimeout);
+ }
+
+ const transactionReceipt = await this._web3Wrapper.getTransactionReceiptAsync(txHash);
+ if (!_.isNull(transactionReceipt)) {
+ intervalUtils.clearAsyncExcludingInterval(intervalId);
+ const logsWithDecodedArgs = _.map(
+ transactionReceipt.logs,
+ this._abiDecoder.tryToDecodeLogOrNoop.bind(this._abiDecoder),
+ );
+ const transactionReceiptWithDecodedLogArgs: TransactionReceiptWithDecodedLogs = {
+ ...transactionReceipt,
+ logs: logsWithDecodedArgs,
+ };
+ resolve(transactionReceiptWithDecodedLogArgs);
+ }
+ }, pollingIntervalMs);
+ });
+
+ return txReceiptPromise;
+ }
+ /*
+ * 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;
+ }
+}
diff --git a/packages/0x.js/src/artifacts.ts b/packages/0x.js/src/artifacts.ts
new file mode 100644
index 000000000..447f9880a
--- /dev/null
+++ b/packages/0x.js/src/artifacts.ts
@@ -0,0 +1,14 @@
+import {Artifact} from './types';
+import * as TokenArtifact from './artifacts/Token.json';
+import * as ExchangeArtifact from './artifacts/Exchange.json';
+import * as EtherTokenArtifact from './artifacts/EtherToken.json';
+import * as TokenRegistryArtifact from './artifacts/TokenRegistry.json';
+import * as TokenTransferProxyArtifact from './artifacts/TokenTransferProxy.json';
+
+export const artifacts = {
+ TokenArtifact: TokenArtifact as any as Artifact,
+ ExchangeArtifact: ExchangeArtifact as any as Artifact,
+ EtherTokenArtifact: EtherTokenArtifact as any as Artifact,
+ TokenRegistryArtifact: TokenRegistryArtifact as any as Artifact,
+ TokenTransferProxyArtifact: TokenTransferProxyArtifact as any as Artifact,
+};
diff --git a/packages/0x.js/src/artifacts/EtherToken.json b/packages/0x.js/src/artifacts/EtherToken.json
new file mode 100644
index 000000000..91b23bc94
--- /dev/null
+++ b/packages/0x.js/src/artifacts/EtherToken.json
@@ -0,0 +1,445 @@
+{
+ "contract_name": "EtherToken",
+ "abi": [
+ {
+ "constant": true,
+ "inputs": [],
+ "name": "name",
+ "outputs": [
+ {
+ "name": "",
+ "type": "string"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "_spender",
+ "type": "address"
+ },
+ {
+ "name": "_value",
+ "type": "uint256"
+ }
+ ],
+ "name": "approve",
+ "outputs": [
+ {
+ "name": "",
+ "type": "bool"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [],
+ "name": "totalSupply",
+ "outputs": [
+ {
+ "name": "",
+ "type": "uint256"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "_from",
+ "type": "address"
+ },
+ {
+ "name": "_to",
+ "type": "address"
+ },
+ {
+ "name": "_value",
+ "type": "uint256"
+ }
+ ],
+ "name": "transferFrom",
+ "outputs": [
+ {
+ "name": "",
+ "type": "bool"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "amount",
+ "type": "uint256"
+ }
+ ],
+ "name": "withdraw",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [],
+ "name": "decimals",
+ "outputs": [
+ {
+ "name": "",
+ "type": "uint8"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "_owner",
+ "type": "address"
+ }
+ ],
+ "name": "balanceOf",
+ "outputs": [
+ {
+ "name": "",
+ "type": "uint256"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [],
+ "name": "symbol",
+ "outputs": [
+ {
+ "name": "",
+ "type": "string"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "_to",
+ "type": "address"
+ },
+ {
+ "name": "_value",
+ "type": "uint256"
+ }
+ ],
+ "name": "transfer",
+ "outputs": [
+ {
+ "name": "",
+ "type": "bool"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [],
+ "name": "deposit",
+ "outputs": [],
+ "payable": true,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "_owner",
+ "type": "address"
+ },
+ {
+ "name": "_spender",
+ "type": "address"
+ }
+ ],
+ "name": "allowance",
+ "outputs": [
+ {
+ "name": "",
+ "type": "uint256"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "payable": true,
+ "type": "fallback"
+ },
+ {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "_from",
+ "type": "address"
+ },
+ {
+ "indexed": true,
+ "name": "_to",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "_value",
+ "type": "uint256"
+ }
+ ],
+ "name": "Transfer",
+ "type": "event"
+ },
+ {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "_owner",
+ "type": "address"
+ },
+ {
+ "indexed": true,
+ "name": "_spender",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "_value",
+ "type": "uint256"
+ }
+ ],
+ "name": "Approval",
+ "type": "event"
+ }
+ ],
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+}
diff --git a/packages/0x.js/src/artifacts/Exchange.json b/packages/0x.js/src/artifacts/Exchange.json
new file mode 100644
index 000000000..734c8f9c7
--- /dev/null
+++ b/packages/0x.js/src/artifacts/Exchange.json
@@ -0,0 +1,1130 @@
+{
+ "contract_name": "Exchange",
+ "abi": [
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "numerator",
+ "type": "uint256"
+ },
+ {
+ "name": "denominator",
+ "type": "uint256"
+ },
+ {
+ "name": "target",
+ "type": "uint256"
+ }
+ ],
+ "name": "isRoundingError",
+ "outputs": [
+ {
+ "name": "",
+ "type": "bool"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "",
+ "type": "bytes32"
+ }
+ ],
+ "name": "filled",
+ "outputs": [
+ {
+ "name": "",
+ "type": "uint256"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "",
+ "type": "bytes32"
+ }
+ ],
+ "name": "cancelled",
+ "outputs": [
+ {
+ "name": "",
+ "type": "uint256"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "orderAddresses",
+ "type": "address[5][]"
+ },
+ {
+ "name": "orderValues",
+ "type": "uint256[6][]"
+ },
+ {
+ "name": "fillTakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "name": "shouldThrowOnInsufficientBalanceOrAllowance",
+ "type": "bool"
+ },
+ {
+ "name": "v",
+ "type": "uint8[]"
+ },
+ {
+ "name": "r",
+ "type": "bytes32[]"
+ },
+ {
+ "name": "s",
+ "type": "bytes32[]"
+ }
+ ],
+ "name": "fillOrdersUpTo",
+ "outputs": [
+ {
+ "name": "",
+ "type": "uint256"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "orderAddresses",
+ "type": "address[5]"
+ },
+ {
+ "name": "orderValues",
+ "type": "uint256[6]"
+ },
+ {
+ "name": "cancelTakerTokenAmount",
+ "type": "uint256"
+ }
+ ],
+ "name": "cancelOrder",
+ "outputs": [
+ {
+ "name": "",
+ "type": "uint256"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [],
+ "name": "ZRX_TOKEN_CONTRACT",
+ "outputs": [
+ {
+ "name": "",
+ "type": "address"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
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+ "name": "orderAddresses",
+ "type": "address[5][]"
+ },
+ {
+ "name": "orderValues",
+ "type": "uint256[6][]"
+ },
+ {
+ "name": "fillTakerTokenAmounts",
+ "type": "uint256[]"
+ },
+ {
+ "name": "v",
+ "type": "uint8[]"
+ },
+ {
+ "name": "r",
+ "type": "bytes32[]"
+ },
+ {
+ "name": "s",
+ "type": "bytes32[]"
+ }
+ ],
+ "name": "batchFillOrKillOrders",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "orderAddresses",
+ "type": "address[5]"
+ },
+ {
+ "name": "orderValues",
+ "type": "uint256[6]"
+ },
+ {
+ "name": "fillTakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "name": "v",
+ "type": "uint8"
+ },
+ {
+ "name": "r",
+ "type": "bytes32"
+ },
+ {
+ "name": "s",
+ "type": "bytes32"
+ }
+ ],
+ "name": "fillOrKillOrder",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "orderHash",
+ "type": "bytes32"
+ }
+ ],
+ "name": "getUnavailableTakerTokenAmount",
+ "outputs": [
+ {
+ "name": "",
+ "type": "uint256"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "signer",
+ "type": "address"
+ },
+ {
+ "name": "hash",
+ "type": "bytes32"
+ },
+ {
+ "name": "v",
+ "type": "uint8"
+ },
+ {
+ "name": "r",
+ "type": "bytes32"
+ },
+ {
+ "name": "s",
+ "type": "bytes32"
+ }
+ ],
+ "name": "isValidSignature",
+ "outputs": [
+ {
+ "name": "",
+ "type": "bool"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "numerator",
+ "type": "uint256"
+ },
+ {
+ "name": "denominator",
+ "type": "uint256"
+ },
+ {
+ "name": "target",
+ "type": "uint256"
+ }
+ ],
+ "name": "getPartialAmount",
+ "outputs": [
+ {
+ "name": "",
+ "type": "uint256"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [],
+ "name": "TOKEN_TRANSFER_PROXY_CONTRACT",
+ "outputs": [
+ {
+ "name": "",
+ "type": "address"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "orderAddresses",
+ "type": "address[5][]"
+ },
+ {
+ "name": "orderValues",
+ "type": "uint256[6][]"
+ },
+ {
+ "name": "fillTakerTokenAmounts",
+ "type": "uint256[]"
+ },
+ {
+ "name": "shouldThrowOnInsufficientBalanceOrAllowance",
+ "type": "bool"
+ },
+ {
+ "name": "v",
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+ "name": "r",
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+ },
+ {
+ "name": "s",
+ "type": "bytes32[]"
+ }
+ ],
+ "name": "batchFillOrders",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "orderAddresses",
+ "type": "address[5][]"
+ },
+ {
+ "name": "orderValues",
+ "type": "uint256[6][]"
+ },
+ {
+ "name": "cancelTakerTokenAmounts",
+ "type": "uint256[]"
+ }
+ ],
+ "name": "batchCancelOrders",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "orderAddresses",
+ "type": "address[5]"
+ },
+ {
+ "name": "orderValues",
+ "type": "uint256[6]"
+ },
+ {
+ "name": "fillTakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "name": "shouldThrowOnInsufficientBalanceOrAllowance",
+ "type": "bool"
+ },
+ {
+ "name": "v",
+ "type": "uint8"
+ },
+ {
+ "name": "r",
+ "type": "bytes32"
+ },
+ {
+ "name": "s",
+ "type": "bytes32"
+ }
+ ],
+ "name": "fillOrder",
+ "outputs": [
+ {
+ "name": "filledTakerTokenAmount",
+ "type": "uint256"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "orderAddresses",
+ "type": "address[5]"
+ },
+ {
+ "name": "orderValues",
+ "type": "uint256[6]"
+ }
+ ],
+ "name": "getOrderHash",
+ "outputs": [
+ {
+ "name": "",
+ "type": "bytes32"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [],
+ "name": "EXTERNAL_QUERY_GAS_LIMIT",
+ "outputs": [
+ {
+ "name": "",
+ "type": "uint16"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [],
+ "name": "VERSION",
+ "outputs": [
+ {
+ "name": "",
+ "type": "string"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "inputs": [
+ {
+ "name": "_zrxToken",
+ "type": "address"
+ },
+ {
+ "name": "_tokenTransferProxy",
+ "type": "address"
+ }
+ ],
+ "payable": false,
+ "type": "constructor"
+ },
+ {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "maker",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "taker",
+ "type": "address"
+ },
+ {
+ "indexed": true,
+ "name": "feeRecipient",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "makerToken",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "takerToken",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "filledMakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "filledTakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "paidMakerFee",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "paidTakerFee",
+ "type": "uint256"
+ },
+ {
+ "indexed": true,
+ "name": "tokens",
+ "type": "bytes32"
+ },
+ {
+ "indexed": false,
+ "name": "orderHash",
+ "type": "bytes32"
+ }
+ ],
+ "name": "LogFill",
+ "type": "event"
+ },
+ {
+ "anonymous": false,
+ "inputs": [
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+ "indexed": true,
+ "name": "maker",
+ "type": "address"
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+ {
+ "indexed": true,
+ "name": "feeRecipient",
+ "type": "address"
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+ {
+ "indexed": false,
+ "name": "makerToken",
+ "type": "address"
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+ {
+ "indexed": false,
+ "name": "takerToken",
+ "type": "address"
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+ "indexed": false,
+ "name": "cancelledMakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "cancelledTakerTokenAmount",
+ "type": "uint256"
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+ {
+ "indexed": true,
+ "name": "tokens",
+ "type": "bytes32"
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+ {
+ "indexed": false,
+ "name": "orderHash",
+ "type": "bytes32"
+ }
+ ],
+ "name": "LogCancel",
+ "type": "event"
+ },
+ {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "errorId",
+ "type": "uint8"
+ },
+ {
+ "indexed": true,
+ "name": "orderHash",
+ "type": "bytes32"
+ }
+ ],
+ "name": "LogError",
+ "type": "event"
+ }
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+ "0x36d86c59e00bd73dc19ba3adfe068e4b64ac7e92be35546adeddf1b956a87e90": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "errorId",
+ "type": "uint8"
+ },
+ {
+ "indexed": true,
+ "name": "orderHash",
+ "type": "bytes32"
+ }
+ ],
+ "name": "LogError",
+ "type": "event"
+ }
+ },
+ "updated_at": 1502480340000,
+ "address": "0x12459c951127e0c374ff9105dda097662a027093"
+ },
+ "3": {
+ "links": {},
+ "events": {
+ "0x0d0b9391970d9a25552f37d436d2aae2925e2bfe1b2a923754bada030c498cb3": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "maker",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "taker",
+ "type": "address"
+ },
+ {
+ "indexed": true,
+ "name": "feeRecipient",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "makerToken",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "takerToken",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "filledMakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "filledTakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "paidMakerFee",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "paidTakerFee",
+ "type": "uint256"
+ },
+ {
+ "indexed": true,
+ "name": "tokens",
+ "type": "bytes32"
+ },
+ {
+ "indexed": false,
+ "name": "orderHash",
+ "type": "bytes32"
+ }
+ ],
+ "name": "LogFill",
+ "type": "event"
+ },
+ "0x67d66f160bc93d925d05dae1794c90d2d6d6688b29b84ff069398a9b04587131": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "maker",
+ "type": "address"
+ },
+ {
+ "indexed": true,
+ "name": "feeRecipient",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "makerToken",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "takerToken",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "cancelledMakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "cancelledTakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": true,
+ "name": "tokens",
+ "type": "bytes32"
+ },
+ {
+ "indexed": false,
+ "name": "orderHash",
+ "type": "bytes32"
+ }
+ ],
+ "name": "LogCancel",
+ "type": "event"
+ },
+ "0x36d86c59e00bd73dc19ba3adfe068e4b64ac7e92be35546adeddf1b956a87e90": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "errorId",
+ "type": "uint8"
+ },
+ {
+ "indexed": true,
+ "name": "orderHash",
+ "type": "bytes32"
+ }
+ ],
+ "name": "LogError",
+ "type": "event"
+ }
+ },
+ "updated_at": 1506602007000,
+ "address": "0x479cc461fecd078f766ecc58533d6f69580cf3ac"
+ },
+ "42": {
+ "links": {},
+ "events": {
+ "0x0d0b9391970d9a25552f37d436d2aae2925e2bfe1b2a923754bada030c498cb3": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "maker",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "taker",
+ "type": "address"
+ },
+ {
+ "indexed": true,
+ "name": "feeRecipient",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "makerToken",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "takerToken",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "filledMakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "filledTakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "paidMakerFee",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "paidTakerFee",
+ "type": "uint256"
+ },
+ {
+ "indexed": true,
+ "name": "tokens",
+ "type": "bytes32"
+ },
+ {
+ "indexed": false,
+ "name": "orderHash",
+ "type": "bytes32"
+ }
+ ],
+ "name": "LogFill",
+ "type": "event"
+ },
+ "0x67d66f160bc93d925d05dae1794c90d2d6d6688b29b84ff069398a9b04587131": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "maker",
+ "type": "address"
+ },
+ {
+ "indexed": true,
+ "name": "feeRecipient",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "makerToken",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "takerToken",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "cancelledMakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "cancelledTakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": true,
+ "name": "tokens",
+ "type": "bytes32"
+ },
+ {
+ "indexed": false,
+ "name": "orderHash",
+ "type": "bytes32"
+ }
+ ],
+ "name": "LogCancel",
+ "type": "event"
+ },
+ "0x36d86c59e00bd73dc19ba3adfe068e4b64ac7e92be35546adeddf1b956a87e90": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "errorId",
+ "type": "uint8"
+ },
+ {
+ "indexed": true,
+ "name": "orderHash",
+ "type": "bytes32"
+ }
+ ],
+ "name": "LogError",
+ "type": "event"
+ }
+ },
+ "updated_at": 1502391794390,
+ "address": "0x90fe2af704b34e0224bf2299c838e04d4dcf1364"
+ },
+ "50": {
+ "links": {},
+ "events": {
+ "0x0d0b9391970d9a25552f37d436d2aae2925e2bfe1b2a923754bada030c498cb3": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "maker",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "taker",
+ "type": "address"
+ },
+ {
+ "indexed": true,
+ "name": "feeRecipient",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "makerToken",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "takerToken",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "filledMakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "filledTakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "paidMakerFee",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "paidTakerFee",
+ "type": "uint256"
+ },
+ {
+ "indexed": true,
+ "name": "tokens",
+ "type": "bytes32"
+ },
+ {
+ "indexed": false,
+ "name": "orderHash",
+ "type": "bytes32"
+ }
+ ],
+ "name": "LogFill",
+ "type": "event"
+ },
+ "0x67d66f160bc93d925d05dae1794c90d2d6d6688b29b84ff069398a9b04587131": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "maker",
+ "type": "address"
+ },
+ {
+ "indexed": true,
+ "name": "feeRecipient",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "makerToken",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "takerToken",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "cancelledMakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": false,
+ "name": "cancelledTakerTokenAmount",
+ "type": "uint256"
+ },
+ {
+ "indexed": true,
+ "name": "tokens",
+ "type": "bytes32"
+ },
+ {
+ "indexed": false,
+ "name": "orderHash",
+ "type": "bytes32"
+ }
+ ],
+ "name": "LogCancel",
+ "type": "event"
+ },
+ "0x36d86c59e00bd73dc19ba3adfe068e4b64ac7e92be35546adeddf1b956a87e90": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "errorId",
+ "type": "uint8"
+ },
+ {
+ "indexed": true,
+ "name": "orderHash",
+ "type": "bytes32"
+ }
+ ],
+ "name": "LogError",
+ "type": "event"
+ }
+ },
+ "updated_at": 1503318938231,
+ "address": "0xb69e673309512a9d726f87304c6984054f87a93b"
+ }
+ },
+ "schema_version": "0.0.5",
+ "updated_at": 1503318938231
+}
diff --git a/packages/0x.js/src/artifacts/Token.json b/packages/0x.js/src/artifacts/Token.json
new file mode 100644
index 000000000..e922ff66d
--- /dev/null
+++ b/packages/0x.js/src/artifacts/Token.json
@@ -0,0 +1,176 @@
+{
+ "contract_name": "Token",
+ "abi": [
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "_spender",
+ "type": "address"
+ },
+ {
+ "name": "_value",
+ "type": "uint256"
+ }
+ ],
+ "name": "approve",
+ "outputs": [
+ {
+ "name": "success",
+ "type": "bool"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [],
+ "name": "totalSupply",
+ "outputs": [
+ {
+ "name": "supply",
+ "type": "uint256"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "_from",
+ "type": "address"
+ },
+ {
+ "name": "_to",
+ "type": "address"
+ },
+ {
+ "name": "_value",
+ "type": "uint256"
+ }
+ ],
+ "name": "transferFrom",
+ "outputs": [
+ {
+ "name": "success",
+ "type": "bool"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "_owner",
+ "type": "address"
+ }
+ ],
+ "name": "balanceOf",
+ "outputs": [
+ {
+ "name": "balance",
+ "type": "uint256"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "_to",
+ "type": "address"
+ },
+ {
+ "name": "_value",
+ "type": "uint256"
+ }
+ ],
+ "name": "transfer",
+ "outputs": [
+ {
+ "name": "success",
+ "type": "bool"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "_owner",
+ "type": "address"
+ },
+ {
+ "name": "_spender",
+ "type": "address"
+ }
+ ],
+ "name": "allowance",
+ "outputs": [
+ {
+ "name": "remaining",
+ "type": "uint256"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "_from",
+ "type": "address"
+ },
+ {
+ "indexed": true,
+ "name": "_to",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "_value",
+ "type": "uint256"
+ }
+ ],
+ "name": "Transfer",
+ "type": "event"
+ },
+ {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "_owner",
+ "type": "address"
+ },
+ {
+ "indexed": true,
+ "name": "_spender",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "_value",
+ "type": "uint256"
+ }
+ ],
+ "name": "Approval",
+ "type": "event"
+ }
+ ],
+ "unlinked_binary": "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",
+ "networks": {},
+ "schema_version": "0.0.5",
+ "updated_at": 1503317882695
+} \ No newline at end of file
diff --git a/packages/0x.js/src/artifacts/TokenRegistry.json b/packages/0x.js/src/artifacts/TokenRegistry.json
new file mode 100644
index 000000000..5a0564a69
--- /dev/null
+++ b/packages/0x.js/src/artifacts/TokenRegistry.json
@@ -0,0 +1,1211 @@
+{
+ "contract_name": "TokenRegistry",
+ "abi": [
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "_token",
+ "type": "address"
+ },
+ {
+ "name": "_index",
+ "type": "uint256"
+ }
+ ],
+ "name": "removeToken",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "_name",
+ "type": "string"
+ }
+ ],
+ "name": "getTokenAddressByName",
+ "outputs": [
+ {
+ "name": "",
+ "type": "address"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "_symbol",
+ "type": "string"
+ }
+ ],
+ "name": "getTokenAddressBySymbol",
+ "outputs": [
+ {
+ "name": "",
+ "type": "address"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "_token",
+ "type": "address"
+ },
+ {
+ "name": "_swarmHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "setTokenSwarmHash",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "_token",
+ "type": "address"
+ }
+ ],
+ "name": "getTokenMetaData",
+ "outputs": [
+ {
+ "name": "",
+ "type": "address"
+ },
+ {
+ "name": "",
+ "type": "string"
+ },
+ {
+ "name": "",
+ "type": "string"
+ },
+ {
+ "name": "",
+ "type": "uint8"
+ },
+ {
+ "name": "",
+ "type": "bytes"
+ },
+ {
+ "name": "",
+ "type": "bytes"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [],
+ "name": "owner",
+ "outputs": [
+ {
+ "name": "",
+ "type": "address"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "_token",
+ "type": "address"
+ },
+ {
+ "name": "_name",
+ "type": "string"
+ },
+ {
+ "name": "_symbol",
+ "type": "string"
+ },
+ {
+ "name": "_decimals",
+ "type": "uint8"
+ },
+ {
+ "name": "_ipfsHash",
+ "type": "bytes"
+ },
+ {
+ "name": "_swarmHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "addToken",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "_token",
+ "type": "address"
+ },
+ {
+ "name": "_name",
+ "type": "string"
+ }
+ ],
+ "name": "setTokenName",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "",
+ "type": "address"
+ }
+ ],
+ "name": "tokens",
+ "outputs": [
+ {
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "name": "name",
+ "type": "string"
+ },
+ {
+ "name": "symbol",
+ "type": "string"
+ },
+ {
+ "name": "decimals",
+ "type": "uint8"
+ },
+ {
+ "name": "ipfsHash",
+ "type": "bytes"
+ },
+ {
+ "name": "swarmHash",
+ "type": "bytes"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "",
+ "type": "uint256"
+ }
+ ],
+ "name": "tokenAddresses",
+ "outputs": [
+ {
+ "name": "",
+ "type": "address"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "_name",
+ "type": "string"
+ }
+ ],
+ "name": "getTokenByName",
+ "outputs": [
+ {
+ "name": "",
+ "type": "address"
+ },
+ {
+ "name": "",
+ "type": "string"
+ },
+ {
+ "name": "",
+ "type": "string"
+ },
+ {
+ "name": "",
+ "type": "uint8"
+ },
+ {
+ "name": "",
+ "type": "bytes"
+ },
+ {
+ "name": "",
+ "type": "bytes"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [],
+ "name": "getTokenAddresses",
+ "outputs": [
+ {
+ "name": "",
+ "type": "address[]"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "_token",
+ "type": "address"
+ },
+ {
+ "name": "_ipfsHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "setTokenIpfsHash",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "_symbol",
+ "type": "string"
+ }
+ ],
+ "name": "getTokenBySymbol",
+ "outputs": [
+ {
+ "name": "",
+ "type": "address"
+ },
+ {
+ "name": "",
+ "type": "string"
+ },
+ {
+ "name": "",
+ "type": "string"
+ },
+ {
+ "name": "",
+ "type": "uint8"
+ },
+ {
+ "name": "",
+ "type": "bytes"
+ },
+ {
+ "name": "",
+ "type": "bytes"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "_token",
+ "type": "address"
+ },
+ {
+ "name": "_symbol",
+ "type": "string"
+ }
+ ],
+ "name": "setTokenSymbol",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "newOwner",
+ "type": "address"
+ }
+ ],
+ "name": "transferOwnership",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "name",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "symbol",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "decimals",
+ "type": "uint8"
+ },
+ {
+ "indexed": false,
+ "name": "ipfsHash",
+ "type": "bytes"
+ },
+ {
+ "indexed": false,
+ "name": "swarmHash",
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+ "name": "ipfsHash",
+ "type": "bytes"
+ },
+ {
+ "indexed": false,
+ "name": "swarmHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogAddToken",
+ "type": "event"
+ },
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+ "name": "name",
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+ "name": "swarmHash",
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+ ],
+ "name": "LogRemoveToken",
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+ "name": "oldName",
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+ },
+ {
+ "indexed": false,
+ "name": "newName",
+ "type": "string"
+ }
+ ],
+ "name": "LogTokenNameChange",
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+ },
+ "0x53d878a6530e56c9bc96548fa0a8cae4f1d1f49c86b0e934c086b992ebb6998f": {
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+ "name": "newSymbol",
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+ ],
+ "name": "LogTokenSymbolChange",
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+ },
+ "0x5b19f79ac4e8cfa820815502e11615f1a449e28155dc289ec5cac1a11f908694": {
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+ },
+ {
+ "indexed": false,
+ "name": "newIpfsHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogTokenIpfsHashChange",
+ "type": "event"
+ },
+ "0xc3168fdc13112e44a031057dbf6c609b33353addb4d8037d24543e22cbfe2acd": {
+ "anonymous": false,
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+ {
+ "indexed": false,
+ "name": "newSwarmHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogTokenSwarmHashChange",
+ "type": "event"
+ }
+ },
+ "updated_at": 1502488442000,
+ "address": "0x926a74c5c36adf004c87399e65f75628b0f98d2c"
+ },
+ "3": {
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+ {
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+ "name": "ipfsHash",
+ "type": "bytes"
+ },
+ {
+ "indexed": false,
+ "name": "swarmHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogAddToken",
+ "type": "event"
+ },
+ "0x32c54f1e2ea75844ded7517e7dbcd3895da7cd0c28f9ab9f9cf6ecf5f83762c6": {
+ "anonymous": false,
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+ "name": "token",
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+ {
+ "indexed": false,
+ "name": "name",
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+ {
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+ "name": "symbol",
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+ {
+ "indexed": false,
+ "name": "decimals",
+ "type": "uint8"
+ },
+ {
+ "indexed": false,
+ "name": "ipfsHash",
+ "type": "bytes"
+ },
+ {
+ "indexed": false,
+ "name": "swarmHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogRemoveToken",
+ "type": "event"
+ },
+ "0x4a6dbfc867b179991dec22ff19960f0a94d8d9d891fc556f547764670340e8ae": {
+ "anonymous": false,
+ "inputs": [
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+ "name": "token",
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+ },
+ {
+ "indexed": false,
+ "name": "oldName",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "newName",
+ "type": "string"
+ }
+ ],
+ "name": "LogTokenNameChange",
+ "type": "event"
+ },
+ "0x53d878a6530e56c9bc96548fa0a8cae4f1d1f49c86b0e934c086b992ebb6998f": {
+ "anonymous": false,
+ "inputs": [
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+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "oldSymbol",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "newSymbol",
+ "type": "string"
+ }
+ ],
+ "name": "LogTokenSymbolChange",
+ "type": "event"
+ },
+ "0x5b19f79ac4e8cfa820815502e11615f1a449e28155dc289ec5cac1a11f908694": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "oldIpfsHash",
+ "type": "bytes"
+ },
+ {
+ "indexed": false,
+ "name": "newIpfsHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogTokenIpfsHashChange",
+ "type": "event"
+ },
+ "0xc3168fdc13112e44a031057dbf6c609b33353addb4d8037d24543e22cbfe2acd": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "oldSwarmHash",
+ "type": "bytes"
+ },
+ {
+ "indexed": false,
+ "name": "newSwarmHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogTokenSwarmHashChange",
+ "type": "event"
+ }
+ },
+ "updated_at": 1506602007000,
+ "address": "0x6b1a50f0bb5a7995444bd3877b22dc89c62843ed"
+ },
+ "42": {
+ "links": {},
+ "events": {
+ "0xd8d928b0b50ca11d9dc273236b46f3526515b03602f71f3a6af4f45bd9fa9144": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "name",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "symbol",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "decimals",
+ "type": "uint8"
+ },
+ {
+ "indexed": false,
+ "name": "ipfsHash",
+ "type": "bytes"
+ },
+ {
+ "indexed": false,
+ "name": "swarmHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogAddToken",
+ "type": "event"
+ },
+ "0x32c54f1e2ea75844ded7517e7dbcd3895da7cd0c28f9ab9f9cf6ecf5f83762c6": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "name",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "symbol",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "decimals",
+ "type": "uint8"
+ },
+ {
+ "indexed": false,
+ "name": "ipfsHash",
+ "type": "bytes"
+ },
+ {
+ "indexed": false,
+ "name": "swarmHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogRemoveToken",
+ "type": "event"
+ },
+ "0x4a6dbfc867b179991dec22ff19960f0a94d8d9d891fc556f547764670340e8ae": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "oldName",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "newName",
+ "type": "string"
+ }
+ ],
+ "name": "LogTokenNameChange",
+ "type": "event"
+ },
+ "0x53d878a6530e56c9bc96548fa0a8cae4f1d1f49c86b0e934c086b992ebb6998f": {
+ "anonymous": false,
+ "inputs": [
+ {
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+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "oldSymbol",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "newSymbol",
+ "type": "string"
+ }
+ ],
+ "name": "LogTokenSymbolChange",
+ "type": "event"
+ },
+ "0x5b19f79ac4e8cfa820815502e11615f1a449e28155dc289ec5cac1a11f908694": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "oldIpfsHash",
+ "type": "bytes"
+ },
+ {
+ "indexed": false,
+ "name": "newIpfsHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogTokenIpfsHashChange",
+ "type": "event"
+ },
+ "0xc3168fdc13112e44a031057dbf6c609b33353addb4d8037d24543e22cbfe2acd": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "oldSwarmHash",
+ "type": "bytes"
+ },
+ {
+ "indexed": false,
+ "name": "newSwarmHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogTokenSwarmHashChange",
+ "type": "event"
+ }
+ },
+ "updated_at": 1502391794385,
+ "address": "0xf18e504561f4347bea557f3d4558f559dddbae7f"
+ },
+ "50": {
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+ "events": {
+ "0xd8d928b0b50ca11d9dc273236b46f3526515b03602f71f3a6af4f45bd9fa9144": {
+ "anonymous": false,
+ "inputs": [
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+ "indexed": true,
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "name",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "symbol",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "decimals",
+ "type": "uint8"
+ },
+ {
+ "indexed": false,
+ "name": "ipfsHash",
+ "type": "bytes"
+ },
+ {
+ "indexed": false,
+ "name": "swarmHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogAddToken",
+ "type": "event"
+ },
+ "0x32c54f1e2ea75844ded7517e7dbcd3895da7cd0c28f9ab9f9cf6ecf5f83762c6": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "name",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "symbol",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "decimals",
+ "type": "uint8"
+ },
+ {
+ "indexed": false,
+ "name": "ipfsHash",
+ "type": "bytes"
+ },
+ {
+ "indexed": false,
+ "name": "swarmHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogRemoveToken",
+ "type": "event"
+ },
+ "0x4a6dbfc867b179991dec22ff19960f0a94d8d9d891fc556f547764670340e8ae": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "oldName",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "newName",
+ "type": "string"
+ }
+ ],
+ "name": "LogTokenNameChange",
+ "type": "event"
+ },
+ "0x53d878a6530e56c9bc96548fa0a8cae4f1d1f49c86b0e934c086b992ebb6998f": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "oldSymbol",
+ "type": "string"
+ },
+ {
+ "indexed": false,
+ "name": "newSymbol",
+ "type": "string"
+ }
+ ],
+ "name": "LogTokenSymbolChange",
+ "type": "event"
+ },
+ "0x5b19f79ac4e8cfa820815502e11615f1a449e28155dc289ec5cac1a11f908694": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "oldIpfsHash",
+ "type": "bytes"
+ },
+ {
+ "indexed": false,
+ "name": "newIpfsHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogTokenIpfsHashChange",
+ "type": "event"
+ },
+ "0xc3168fdc13112e44a031057dbf6c609b33353addb4d8037d24543e22cbfe2acd": {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "indexed": false,
+ "name": "oldSwarmHash",
+ "type": "bytes"
+ },
+ {
+ "indexed": false,
+ "name": "newSwarmHash",
+ "type": "bytes"
+ }
+ ],
+ "name": "LogTokenSwarmHashChange",
+ "type": "event"
+ }
+ },
+ "updated_at": 1503318938228,
+ "address": "0x0b1ba0af832d7c05fd64161e0db78e85978e8082"
+ }
+ },
+ "schema_version": "0.0.5",
+ "updated_at": 1503318938228
+}
diff --git a/packages/0x.js/src/artifacts/TokenTransferProxy.json b/packages/0x.js/src/artifacts/TokenTransferProxy.json
new file mode 100644
index 000000000..beeb16cfe
--- /dev/null
+++ b/packages/0x.js/src/artifacts/TokenTransferProxy.json
@@ -0,0 +1,174 @@
+{
+ "contract_name": "TokenTransferProxy",
+ "abi": [
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "token",
+ "type": "address"
+ },
+ {
+ "name": "from",
+ "type": "address"
+ },
+ {
+ "name": "to",
+ "type": "address"
+ },
+ {
+ "name": "value",
+ "type": "uint256"
+ }
+ ],
+ "name": "transferFrom",
+ "outputs": [
+ {
+ "name": "",
+ "type": "bool"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "target",
+ "type": "address"
+ }
+ ],
+ "name": "addAuthorizedAddress",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "",
+ "type": "uint256"
+ }
+ ],
+ "name": "authorities",
+ "outputs": [
+ {
+ "name": "",
+ "type": "address"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "target",
+ "type": "address"
+ }
+ ],
+ "name": "removeAuthorizedAddress",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [],
+ "name": "owner",
+ "outputs": [
+ {
+ "name": "",
+ "type": "address"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [
+ {
+ "name": "",
+ "type": "address"
+ }
+ ],
+ "name": "authorized",
+ "outputs": [
+ {
+ "name": "",
+ "type": "bool"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": true,
+ "inputs": [],
+ "name": "getAuthorizedAddresses",
+ "outputs": [
+ {
+ "name": "",
+ "type": "address[]"
+ }
+ ],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "constant": false,
+ "inputs": [
+ {
+ "name": "newOwner",
+ "type": "address"
+ }
+ ],
+ "name": "transferOwnership",
+ "outputs": [],
+ "payable": false,
+ "type": "function"
+ },
+ {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "target",
+ "type": "address"
+ },
+ {
+ "indexed": true,
+ "name": "caller",
+ "type": "address"
+ }
+ ],
+ "name": "LogAuthorizedAddressAdded",
+ "type": "event"
+ },
+ {
+ "anonymous": false,
+ "inputs": [
+ {
+ "indexed": true,
+ "name": "target",
+ "type": "address"
+ },
+ {
+ "indexed": true,
+ "name": "caller",
+ "type": "address"
+ }
+ ],
+ "name": "LogAuthorizedAddressRemoved",
+ "type": "event"
+ }
+ ],
+ "unlinked_binary": "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",
+ "networks": {},
+ "schema_version": "0.0.5",
+ "updated_at": 1503318938227
+}
diff --git a/packages/0x.js/src/bignumber_config.ts b/packages/0x.js/src/bignumber_config.ts
new file mode 100644
index 000000000..2d5214e6f
--- /dev/null
+++ b/packages/0x.js/src/bignumber_config.ts
@@ -0,0 +1,11 @@
+import BigNumber from 'bignumber.js';
+
+export const bigNumberConfigs = {
+ configure() {
+ // By default BigNumber's `toString` method converts to exponential notation if the value has
+ // more then 20 digits. We want to avoid this behavior, so we set EXPONENTIAL_AT to a high number
+ BigNumber.config({
+ EXPONENTIAL_AT: 1000,
+ });
+ },
+};
diff --git a/packages/0x.js/src/contract.ts b/packages/0x.js/src/contract.ts
new file mode 100644
index 000000000..1aacc65dc
--- /dev/null
+++ b/packages/0x.js/src/contract.ts
@@ -0,0 +1,80 @@
+import * as Web3 from 'web3';
+import * as _ from 'lodash';
+import promisify = require('es6-promisify');
+import {SchemaValidator, schemas} from '0x-json-schemas';
+import {AbiType} from './types';
+
+export class Contract implements Web3.ContractInstance {
+ public address: string;
+ public abi: Web3.ContractAbi;
+ private contract: Web3.ContractInstance;
+ private defaults: Partial<Web3.TxData>;
+ private validator: SchemaValidator;
+ // This class instance is going to be populated with functions and events depending on the ABI
+ // and we don't know their types in advance
+ [name: string]: any;
+ constructor(web3ContractInstance: Web3.ContractInstance, defaults: Partial<Web3.TxData>) {
+ this.contract = web3ContractInstance;
+ this.address = web3ContractInstance.address;
+ this.abi = web3ContractInstance.abi;
+ this.defaults = defaults;
+ this.populateEvents();
+ this.populateFunctions();
+ this.validator = new SchemaValidator();
+ }
+ private populateFunctions(): void {
+ const functionsAbi = _.filter(this.abi, abiPart => abiPart.type === AbiType.Function);
+ _.forEach(functionsAbi, (functionAbi: Web3.MethodAbi) => {
+ if (functionAbi.constant) {
+ const cbStyleCallFunction = this.contract[functionAbi.name].call;
+ this[functionAbi.name] = {
+ callAsync: promisify(cbStyleCallFunction, this.contract),
+ };
+ } else {
+ const cbStyleFunction = this.contract[functionAbi.name];
+ const cbStyleEstimateGasFunction = this.contract[functionAbi.name].estimateGas;
+ this[functionAbi.name] = {
+ estimateGasAsync: promisify(cbStyleEstimateGasFunction, this.contract),
+ sendTransactionAsync: this.promisifyWithDefaultParams(cbStyleFunction),
+ };
+ }
+ });
+ }
+ private populateEvents(): void {
+ const eventsAbi = _.filter(this.abi, abiPart => abiPart.type === AbiType.Event);
+ _.forEach(eventsAbi, (eventAbi: Web3.EventAbi) => {
+ this[eventAbi.name] = this.contract[eventAbi.name];
+ });
+ }
+ private promisifyWithDefaultParams(fn: (...args: any[]) => void): (...args: any[]) => Promise<any> {
+ const promisifiedWithDefaultParams = (...args: any[]) => {
+ const promise = new Promise((resolve, reject) => {
+ const lastArg = args[args.length - 1];
+ let txData: Partial<Web3.TxData> = {};
+ if (this.isTxData(lastArg)) {
+ txData = args.pop();
+ }
+ txData = {
+ ...this.defaults,
+ ...txData,
+ };
+ const callback = (err: Error, data: any) => {
+ if (_.isNull(err)) {
+ resolve(data);
+ } else {
+ reject(err);
+ }
+ };
+ args.push(txData);
+ args.push(callback);
+ fn.apply(this.contract, args);
+ });
+ return promise;
+ };
+ return promisifiedWithDefaultParams;
+ }
+ private isTxData(lastArg: any): boolean {
+ const isValid = this.validator.isValid(lastArg, schemas.txDataSchema);
+ return isValid;
+ }
+}
diff --git a/packages/0x.js/src/contract_wrappers/contract_wrapper.ts b/packages/0x.js/src/contract_wrappers/contract_wrapper.ts
new file mode 100644
index 000000000..7997b1647
--- /dev/null
+++ b/packages/0x.js/src/contract_wrappers/contract_wrapper.ts
@@ -0,0 +1,152 @@
+import * as _ from 'lodash';
+import * as Web3 from 'web3';
+import {BlockAndLogStreamer, Block} from 'ethereumjs-blockstream';
+import {Web3Wrapper} from '../web3_wrapper';
+import {AbiDecoder} from '../utils/abi_decoder';
+import {
+ ZeroExError,
+ InternalZeroExError,
+ Artifact,
+ LogWithDecodedArgs,
+ RawLog,
+ ContractEvents,
+ SubscriptionOpts,
+ IndexedFilterValues,
+ EventCallback,
+ BlockParamLiteral,
+ ContractEventArgs,
+} from '../types';
+import {constants} from '../utils/constants';
+import {intervalUtils} from '../utils/interval_utils';
+import {filterUtils} from '../utils/filter_utils';
+
+export class ContractWrapper {
+ protected _web3Wrapper: Web3Wrapper;
+ private _abiDecoder?: AbiDecoder;
+ private _blockAndLogStreamer: BlockAndLogStreamer|undefined;
+ private _blockAndLogStreamInterval: NodeJS.Timer;
+ private _filters: {[filterToken: string]: Web3.FilterObject};
+ private _filterCallbacks: {[filterToken: string]: EventCallback<ContractEventArgs>};
+ private _onLogAddedSubscriptionToken: string|undefined;
+ private _onLogRemovedSubscriptionToken: string|undefined;
+ constructor(web3Wrapper: Web3Wrapper, abiDecoder?: AbiDecoder) {
+ this._web3Wrapper = web3Wrapper;
+ this._abiDecoder = abiDecoder;
+ this._filters = {};
+ this._filterCallbacks = {};
+ this._blockAndLogStreamer = undefined;
+ this._onLogAddedSubscriptionToken = undefined;
+ this._onLogRemovedSubscriptionToken = undefined;
+ }
+ /**
+ * Cancels all existing subscriptions
+ */
+ public unsubscribeAll(): void {
+ const filterTokens = _.keys(this._filterCallbacks);
+ _.each(filterTokens, filterToken => {
+ this._unsubscribe(filterToken);
+ });
+ }
+ protected _unsubscribe(filterToken: string, err?: Error): void {
+ if (_.isUndefined(this._filters[filterToken])) {
+ throw new Error(ZeroExError.SubscriptionNotFound);
+ }
+ if (!_.isUndefined(err)) {
+ const callback = this._filterCallbacks[filterToken];
+ callback(err, undefined);
+ }
+ delete this._filters[filterToken];
+ delete this._filterCallbacks[filterToken];
+ if (_.isEmpty(this._filters)) {
+ this._stopBlockAndLogStream();
+ }
+ }
+ protected _subscribe<ArgsType extends ContractEventArgs>(
+ address: string, eventName: ContractEvents, indexFilterValues: IndexedFilterValues, abi: Web3.ContractAbi,
+ callback: EventCallback<ArgsType>): string {
+ const filter = filterUtils.getFilter(address, eventName, indexFilterValues, abi);
+ if (_.isUndefined(this._blockAndLogStreamer)) {
+ this._startBlockAndLogStream();
+ }
+ const filterToken = filterUtils.generateUUID();
+ this._filters[filterToken] = filter;
+ this._filterCallbacks[filterToken] = callback;
+ return filterToken;
+ }
+ protected async _getLogsAsync<ArgsType extends ContractEventArgs>(
+ address: string, eventName: ContractEvents, subscriptionOpts: SubscriptionOpts,
+ indexFilterValues: IndexedFilterValues, abi: Web3.ContractAbi): Promise<Array<LogWithDecodedArgs<ArgsType>>> {
+ const filter = filterUtils.getFilter(address, eventName, indexFilterValues, abi, subscriptionOpts);
+ const logs = await this._web3Wrapper.getLogsAsync(filter);
+ const logsWithDecodedArguments = _.map(logs, this._tryToDecodeLogOrNoop.bind(this));
+ return logsWithDecodedArguments;
+ }
+ protected _tryToDecodeLogOrNoop<ArgsType extends ContractEventArgs>(
+ log: Web3.LogEntry): LogWithDecodedArgs<ArgsType>|RawLog {
+ if (_.isUndefined(this._abiDecoder)) {
+ throw new Error(InternalZeroExError.NoAbiDecoder);
+ }
+ const logWithDecodedArgs = this._abiDecoder.tryToDecodeLogOrNoop(log);
+ return logWithDecodedArgs;
+ }
+ protected async _instantiateContractIfExistsAsync<ContractType extends Web3.ContractInstance>(
+ artifact: Artifact, addressIfExists?: string): Promise<ContractType> {
+ const contractInstance =
+ await this._web3Wrapper.getContractInstanceFromArtifactAsync<ContractType>(artifact, addressIfExists);
+ return contractInstance;
+ }
+ private _onLogStateChanged<ArgsType extends ContractEventArgs>(removed: boolean, log: Web3.LogEntry): void {
+ _.forEach(this._filters, (filter: Web3.FilterObject, filterToken: string) => {
+ if (filterUtils.matchesFilter(log, filter)) {
+ const decodedLog = this._tryToDecodeLogOrNoop(log) as LogWithDecodedArgs<ArgsType>;
+ const logEvent = {
+ ...decodedLog,
+ removed,
+ };
+ this._filterCallbacks[filterToken](null, logEvent);
+ }
+ });
+ }
+ private _startBlockAndLogStream(): void {
+ this._blockAndLogStreamer = new BlockAndLogStreamer(
+ this._web3Wrapper.getBlockAsync.bind(this._web3Wrapper),
+ this._web3Wrapper.getLogsAsync.bind(this._web3Wrapper),
+ );
+ const catchAllLogFilter = {};
+ this._blockAndLogStreamer.addLogFilter(catchAllLogFilter);
+ this._blockAndLogStreamInterval = intervalUtils.setAsyncExcludingInterval(
+ this._reconcileBlockAsync.bind(this), constants.DEFAULT_BLOCK_POLLING_INTERVAL,
+ );
+ let removed = false;
+ this._onLogAddedSubscriptionToken = this._blockAndLogStreamer.subscribeToOnLogAdded(
+ this._onLogStateChanged.bind(this, removed),
+ );
+ removed = true;
+ this._onLogRemovedSubscriptionToken = this._blockAndLogStreamer.subscribeToOnLogRemoved(
+ this._onLogStateChanged.bind(this, removed),
+ );
+ }
+ private _stopBlockAndLogStream(): void {
+ (this._blockAndLogStreamer as BlockAndLogStreamer).unsubscribeFromOnLogAdded(
+ this._onLogAddedSubscriptionToken as string);
+ (this._blockAndLogStreamer as BlockAndLogStreamer).unsubscribeFromOnLogRemoved(
+ this._onLogRemovedSubscriptionToken as string);
+ intervalUtils.clearAsyncExcludingInterval(this._blockAndLogStreamInterval);
+ delete this._blockAndLogStreamer;
+ }
+ private async _reconcileBlockAsync(): Promise<void> {
+ try {
+ const latestBlock = await this._web3Wrapper.getBlockAsync(BlockParamLiteral.Latest);
+ // We need to coerce to Block type cause Web3.Block includes types for mempool blocks
+ if (!_.isUndefined(this._blockAndLogStreamer)) {
+ // If we clear the interval while fetching the block - this._blockAndLogStreamer will be undefined
+ this._blockAndLogStreamer.reconcileNewBlock(latestBlock as any as Block);
+ }
+ } catch (err) {
+ const filterTokens = _.keys(this._filterCallbacks);
+ _.each(filterTokens, filterToken => {
+ this._unsubscribe(filterToken, err);
+ });
+ }
+ }
+}
diff --git a/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts b/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
new file mode 100644
index 000000000..3cd2f0224
--- /dev/null
+++ b/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
@@ -0,0 +1,87 @@
+import * as _ from 'lodash';
+import BigNumber from 'bignumber.js';
+import {Web3Wrapper} from '../web3_wrapper';
+import {ContractWrapper} from './contract_wrapper';
+import {TokenWrapper} from './token_wrapper';
+import {EtherTokenContract, ZeroExError} from '../types';
+import {assert} from '../utils/assert';
+import {artifacts} from '../artifacts';
+
+/**
+ * This class includes all the functionality related to interacting with a wrapped Ether ERC20 token contract.
+ * The caller can convert ETH into the equivalent number of wrapped ETH ERC20 tokens and back.
+ */
+export class EtherTokenWrapper extends ContractWrapper {
+ private _etherTokenContractIfExists?: EtherTokenContract;
+ private _tokenWrapper: TokenWrapper;
+ private _contractAddressIfExists?: string;
+ constructor(web3Wrapper: Web3Wrapper, tokenWrapper: TokenWrapper, contractAddressIfExists?: string) {
+ super(web3Wrapper);
+ this._tokenWrapper = tokenWrapper;
+ this._contractAddressIfExists = contractAddressIfExists;
+ }
+ /**
+ * Deposit ETH into the Wrapped ETH smart contract and issues the equivalent number of wrapped ETH tokens
+ * to the depositor address. These wrapped ETH tokens can be used in 0x trades and are redeemable for 1-to-1
+ * for ETH.
+ * @param amountInWei Amount of ETH in Wei the caller wishes to deposit.
+ * @param depositor The hex encoded user Ethereum address that would like to make the deposit.
+ * @return Transaction hash.
+ */
+ public async depositAsync(amountInWei: BigNumber, depositor: string): Promise<string> {
+ assert.isValidBaseUnitAmount('amountInWei', amountInWei);
+ await assert.isSenderAddressAsync('depositor', depositor, this._web3Wrapper);
+
+ const ethBalanceInWei = await this._web3Wrapper.getBalanceInWeiAsync(depositor);
+ assert.assert(ethBalanceInWei.gte(amountInWei), ZeroExError.InsufficientEthBalanceForDeposit);
+
+ const wethContract = await this._getEtherTokenContractAsync();
+ const txHash = await wethContract.deposit.sendTransactionAsync({
+ from: depositor,
+ value: amountInWei,
+ });
+ return txHash;
+ }
+ /**
+ * Withdraw ETH to the withdrawer's address from the wrapped ETH smart contract in exchange for the
+ * equivalent number of wrapped ETH tokens.
+ * @param amountInWei Amount of ETH in Wei the caller wishes to withdraw.
+ * @param withdrawer The hex encoded user Ethereum address that would like to make the withdrawl.
+ * @return Transaction hash.
+ */
+ public async withdrawAsync(amountInWei: BigNumber, withdrawer: string): Promise<string> {
+ assert.isValidBaseUnitAmount('amountInWei', amountInWei);
+ await assert.isSenderAddressAsync('withdrawer', withdrawer, this._web3Wrapper);
+
+ const wethContractAddress = await this.getContractAddressAsync();
+ const WETHBalanceInBaseUnits = await this._tokenWrapper.getBalanceAsync(wethContractAddress, withdrawer);
+ assert.assert(WETHBalanceInBaseUnits.gte(amountInWei), ZeroExError.InsufficientWEthBalanceForWithdrawal);
+
+ const wethContract = await this._getEtherTokenContractAsync();
+ const txHash = await wethContract.withdraw.sendTransactionAsync(amountInWei, {
+ from: withdrawer,
+ });
+ return txHash;
+ }
+ /**
+ * Retrieves the Wrapped Ether token contract address
+ * @return The Wrapped Ether token contract address
+ */
+ public async getContractAddressAsync(): Promise<string> {
+ const wethContract = await this._getEtherTokenContractAsync();
+ return wethContract.address;
+ }
+ private _invalidateContractInstance(): void {
+ delete this._etherTokenContractIfExists;
+ }
+ private async _getEtherTokenContractAsync(): Promise<EtherTokenContract> {
+ if (!_.isUndefined(this._etherTokenContractIfExists)) {
+ return this._etherTokenContractIfExists;
+ }
+ const contractInstance = await this._instantiateContractIfExistsAsync<EtherTokenContract>(
+ artifacts.EtherTokenArtifact, this._contractAddressIfExists,
+ );
+ this._etherTokenContractIfExists = contractInstance as EtherTokenContract;
+ return this._etherTokenContractIfExists;
+ }
+}
diff --git a/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts b/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts
new file mode 100644
index 000000000..fe0c5bc00
--- /dev/null
+++ b/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts
@@ -0,0 +1,866 @@
+import * as _ from 'lodash';
+import * as Web3 from 'web3';
+import BigNumber from 'bignumber.js';
+import {schemas} from '0x-json-schemas';
+import {Web3Wrapper} from '../web3_wrapper';
+import {
+ ECSignature,
+ ExchangeContract,
+ ExchangeContractErrCodes,
+ ExchangeContractErrs,
+ ZeroExError,
+ OrderValues,
+ OrderAddresses,
+ Order,
+ SignedOrder,
+ ExchangeEvents,
+ SubscriptionOpts,
+ IndexedFilterValues,
+ OrderCancellationRequest,
+ OrderFillRequest,
+ LogErrorContractEventArgs,
+ LogFillContractEventArgs,
+ LogCancelContractEventArgs,
+ LogWithDecodedArgs,
+ MethodOpts,
+ ValidateOrderFillableOpts,
+ OrderTransactionOpts,
+ RawLog,
+ EventCallback,
+ ExchangeContractEventArgs,
+ DecodedLogArgs,
+} from '../types';
+import {assert} from '../utils/assert';
+import {utils} from '../utils/utils';
+import {OrderValidationUtils} from '../utils/order_validation_utils';
+import {ContractWrapper} from './contract_wrapper';
+import {TokenWrapper} from './token_wrapper';
+import {decorators} from '../utils/decorators';
+import {AbiDecoder} from '../utils/abi_decoder';
+import {ExchangeTransferSimulator} from '../utils/exchange_transfer_simulator';
+import {artifacts} from '../artifacts';
+
+const SHOULD_VALIDATE_BY_DEFAULT = true;
+
+/**
+ * This class includes all the functionality related to calling methods and subscribing to
+ * events of the 0x Exchange smart contract.
+ */
+export class ExchangeWrapper extends ContractWrapper {
+ private _exchangeContractIfExists?: ExchangeContract;
+ private _orderValidationUtils: OrderValidationUtils;
+ private _tokenWrapper: TokenWrapper;
+ private _exchangeContractErrCodesToMsg = {
+ [ExchangeContractErrCodes.ERROR_FILL_EXPIRED]: ExchangeContractErrs.OrderFillExpired,
+ [ExchangeContractErrCodes.ERROR_CANCEL_EXPIRED]: ExchangeContractErrs.OrderFillExpired,
+ [ExchangeContractErrCodes.ERROR_FILL_NO_VALUE]: ExchangeContractErrs.OrderRemainingFillAmountZero,
+ [ExchangeContractErrCodes.ERROR_CANCEL_NO_VALUE]: ExchangeContractErrs.OrderRemainingFillAmountZero,
+ [ExchangeContractErrCodes.ERROR_FILL_TRUNCATION]: ExchangeContractErrs.OrderFillRoundingError,
+ [ExchangeContractErrCodes.ERROR_FILL_BALANCE_ALLOWANCE]: ExchangeContractErrs.FillBalanceAllowanceError,
+ };
+ private _contractAddressIfExists?: string;
+ private static _getOrderAddressesAndValues(order: Order): [OrderAddresses, OrderValues] {
+ const orderAddresses: OrderAddresses = [
+ order.maker,
+ order.taker,
+ order.makerTokenAddress,
+ order.takerTokenAddress,
+ order.feeRecipient,
+ ];
+ const orderValues: OrderValues = [
+ order.makerTokenAmount,
+ order.takerTokenAmount,
+ order.makerFee,
+ order.takerFee,
+ order.expirationUnixTimestampSec,
+ order.salt,
+ ];
+ return [orderAddresses, orderValues];
+ }
+ constructor(web3Wrapper: Web3Wrapper, abiDecoder: AbiDecoder,
+ tokenWrapper: TokenWrapper, contractAddressIfExists?: string) {
+ super(web3Wrapper, abiDecoder);
+ this._tokenWrapper = tokenWrapper;
+ this._orderValidationUtils = new OrderValidationUtils(tokenWrapper, this);
+ this._contractAddressIfExists = contractAddressIfExists;
+ }
+ /**
+ * Returns the unavailable takerAmount of an order. Unavailable amount is defined as the total
+ * amount that has been filled or cancelled. The remaining takerAmount can be calculated by
+ * subtracting the unavailable amount from the total order takerAmount.
+ * @param orderHash The hex encoded orderHash for which you would like to retrieve the
+ * unavailable takerAmount.
+ * @param methodOpts Optional arguments this method accepts.
+ * @return The amount of the order (in taker tokens) that has either been filled or canceled.
+ */
+ public async getUnavailableTakerAmountAsync(orderHash: string,
+ methodOpts?: MethodOpts): Promise<BigNumber> {
+ assert.doesConformToSchema('orderHash', orderHash, schemas.orderHashSchema);
+
+ const exchangeContract = await this._getExchangeContractAsync();
+ const defaultBlock = _.isUndefined(methodOpts) ? undefined : methodOpts.defaultBlock;
+ let unavailableTakerTokenAmount = await exchangeContract.getUnavailableTakerTokenAmount.callAsync(
+ orderHash, defaultBlock,
+ );
+ // Wrap BigNumbers returned from web3 with our own (later) version of BigNumber
+ unavailableTakerTokenAmount = new BigNumber(unavailableTakerTokenAmount);
+ return unavailableTakerTokenAmount;
+ }
+ /**
+ * Retrieve the takerAmount of an order that has already been filled.
+ * @param orderHash The hex encoded orderHash for which you would like to retrieve the filled takerAmount.
+ * @param methodOpts Optional arguments this method accepts.
+ * @return The amount of the order (in taker tokens) that has already been filled.
+ */
+ public async getFilledTakerAmountAsync(orderHash: string, methodOpts?: MethodOpts): Promise<BigNumber> {
+ assert.doesConformToSchema('orderHash', orderHash, schemas.orderHashSchema);
+
+ const exchangeContract = await this._getExchangeContractAsync();
+ const defaultBlock = _.isUndefined(methodOpts) ? undefined : methodOpts.defaultBlock;
+ let fillAmountInBaseUnits = await exchangeContract.filled.callAsync(orderHash, defaultBlock);
+ // Wrap BigNumbers returned from web3 with our own (later) version of BigNumber
+ fillAmountInBaseUnits = new BigNumber(fillAmountInBaseUnits);
+ return fillAmountInBaseUnits;
+ }
+ /**
+ * Retrieve the takerAmount of an order that has been cancelled.
+ * @param orderHash The hex encoded orderHash for which you would like to retrieve the
+ * cancelled takerAmount.
+ * @param methodOpts Optional arguments this method accepts.
+ * @return The amount of the order (in taker tokens) that has been cancelled.
+ */
+ public async getCanceledTakerAmountAsync(orderHash: string, methodOpts?: MethodOpts): Promise<BigNumber> {
+ assert.doesConformToSchema('orderHash', orderHash, schemas.orderHashSchema);
+
+ const exchangeContract = await this._getExchangeContractAsync();
+ const defaultBlock = _.isUndefined(methodOpts) ? undefined : methodOpts.defaultBlock;
+ let cancelledAmountInBaseUnits = await exchangeContract.cancelled.callAsync(orderHash, defaultBlock);
+ // Wrap BigNumbers returned from web3 with our own (later) version of BigNumber
+ cancelledAmountInBaseUnits = new BigNumber(cancelledAmountInBaseUnits);
+ return cancelledAmountInBaseUnits;
+ }
+ /**
+ * Fills a signed order with an amount denominated in baseUnits of the taker token.
+ * Since the order in which transactions are included in the next block is indeterminate, race-conditions
+ * could arise where a users balance or allowance changes before the fillOrder executes. Because of this,
+ * we allow you to specify `shouldThrowOnInsufficientBalanceOrAllowance`.
+ * If false, the smart contract will not throw if the parties
+ * do not have sufficient balances/allowances, preserving gas costs. Setting it to true forgoes this check
+ * and causes the smart contract to throw (using all the gas supplied) instead.
+ * @param signedOrder An object that conforms to the SignedOrder interface.
+ * @param fillTakerTokenAmount The amount of the order (in taker tokens baseUnits) that
+ * you wish to fill.
+ * @param shouldThrowOnInsufficientBalanceOrAllowance Whether or not you wish for the contract call to throw
+ * if upon execution the tokens cannot be transferred.
+ * @param takerAddress The user Ethereum address who would like to fill this order.
+ * Must be available via the supplied Web3.Provider
+ * passed to 0x.js.
+ * @param orderTransactionOpts Optional arguments this method accepts.
+ * @return Transaction hash.
+ */
+ @decorators.contractCallErrorHandler
+ public async fillOrderAsync(signedOrder: SignedOrder, fillTakerTokenAmount: BigNumber,
+ shouldThrowOnInsufficientBalanceOrAllowance: boolean,
+ takerAddress: string,
+ orderTransactionOpts?: OrderTransactionOpts): Promise<string> {
+ assert.doesConformToSchema('signedOrder', signedOrder, schemas.signedOrderSchema);
+ assert.isValidBaseUnitAmount('fillTakerTokenAmount', fillTakerTokenAmount);
+ assert.isBoolean('shouldThrowOnInsufficientBalanceOrAllowance', shouldThrowOnInsufficientBalanceOrAllowance);
+ await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
+
+ const exchangeInstance = await this._getExchangeContractAsync();
+ const shouldValidate = _.isUndefined(orderTransactionOpts) ?
+ SHOULD_VALIDATE_BY_DEFAULT :
+ orderTransactionOpts.shouldValidate;
+ if (shouldValidate) {
+ const zrxTokenAddress = await this.getZRXTokenAddressAsync();
+ const exchangeTradeEmulator = new ExchangeTransferSimulator(this._tokenWrapper);
+ await this._orderValidationUtils.validateFillOrderThrowIfInvalidAsync(
+ exchangeTradeEmulator, signedOrder, fillTakerTokenAmount, takerAddress, zrxTokenAddress);
+ }
+
+ const [orderAddresses, orderValues] = ExchangeWrapper._getOrderAddressesAndValues(signedOrder);
+
+ const gas = await exchangeInstance.fillOrder.estimateGasAsync(
+ orderAddresses,
+ orderValues,
+ fillTakerTokenAmount,
+ shouldThrowOnInsufficientBalanceOrAllowance,
+ signedOrder.ecSignature.v,
+ signedOrder.ecSignature.r,
+ signedOrder.ecSignature.s,
+ {
+ from: takerAddress,
+ },
+ );
+ const txHash: string = await exchangeInstance.fillOrder.sendTransactionAsync(
+ orderAddresses,
+ orderValues,
+ fillTakerTokenAmount,
+ shouldThrowOnInsufficientBalanceOrAllowance,
+ signedOrder.ecSignature.v,
+ signedOrder.ecSignature.r,
+ signedOrder.ecSignature.s,
+ {
+ from: takerAddress,
+ gas,
+ },
+ );
+ return txHash;
+ }
+ /**
+ * Sequentially and atomically fills signedOrders up to the specified takerTokenFillAmount.
+ * If the fill amount is reached - it succeeds and does not fill the rest of the orders.
+ * If fill amount is not reached - it fills as much of the fill amount as possible and succeeds.
+ * @param signedOrders The array of signedOrders that you would like to fill until
+ * takerTokenFillAmount is reached.
+ * @param fillTakerTokenAmount The total amount of the takerTokens you would like to fill.
+ * @param shouldThrowOnInsufficientBalanceOrAllowance Whether or not you wish for the contract call to throw if
+ * upon execution any of the tokens cannot be transferred.
+ * If set to false, the call will continue to fill subsequent
+ * signedOrders even when some cannot be filled.
+ * @param takerAddress The user Ethereum address who would like to fill these
+ * orders. Must be available via the supplied Web3.Provider
+ * passed to 0x.js.
+ * @param orderTransactionOpts Optional arguments this method accepts.
+ * @return Transaction hash.
+ */
+ @decorators.contractCallErrorHandler
+ public async fillOrdersUpToAsync(signedOrders: SignedOrder[], fillTakerTokenAmount: BigNumber,
+ shouldThrowOnInsufficientBalanceOrAllowance: boolean,
+ takerAddress: string,
+ orderTransactionOpts?: OrderTransactionOpts): Promise<string> {
+ assert.doesConformToSchema('signedOrders', signedOrders, schemas.signedOrdersSchema);
+ const takerTokenAddresses = _.map(signedOrders, signedOrder => signedOrder.takerTokenAddress);
+ assert.hasAtMostOneUniqueValue(takerTokenAddresses,
+ ExchangeContractErrs.MultipleTakerTokensInFillUpToDisallowed);
+ const exchangeContractAddresses = _.map(signedOrders, signedOrder => signedOrder.exchangeContractAddress);
+ assert.hasAtMostOneUniqueValue(exchangeContractAddresses,
+ ExchangeContractErrs.BatchOrdersMustHaveSameExchangeAddress);
+ assert.isValidBaseUnitAmount('fillTakerTokenAmount', fillTakerTokenAmount);
+ assert.isBoolean('shouldThrowOnInsufficientBalanceOrAllowance', shouldThrowOnInsufficientBalanceOrAllowance);
+ await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
+
+ const shouldValidate = _.isUndefined(orderTransactionOpts) ?
+ SHOULD_VALIDATE_BY_DEFAULT :
+ orderTransactionOpts.shouldValidate;
+ if (shouldValidate) {
+ const zrxTokenAddress = await this.getZRXTokenAddressAsync();
+ const exchangeTradeEmulator = new ExchangeTransferSimulator(this._tokenWrapper);
+ for (const signedOrder of signedOrders) {
+ await this._orderValidationUtils.validateFillOrderThrowIfInvalidAsync(
+ exchangeTradeEmulator, signedOrder, fillTakerTokenAmount, takerAddress, zrxTokenAddress);
+ }
+ }
+
+ if (_.isEmpty(signedOrders)) {
+ throw new Error(ExchangeContractErrs.BatchOrdersMustHaveAtLeastOneItem);
+ }
+
+ const orderAddressesValuesAndSignatureArray = _.map(signedOrders, signedOrder => {
+ return [
+ ...ExchangeWrapper._getOrderAddressesAndValues(signedOrder),
+ signedOrder.ecSignature.v,
+ signedOrder.ecSignature.r,
+ signedOrder.ecSignature.s,
+ ];
+ });
+ // We use _.unzip<any> because _.unzip doesn't type check if values have different types :'(
+ const [orderAddressesArray, orderValuesArray, vArray, rArray, sArray] = _.unzip<any>(
+ orderAddressesValuesAndSignatureArray,
+ );
+
+ const exchangeInstance = await this._getExchangeContractAsync();
+ const gas = await exchangeInstance.fillOrdersUpTo.estimateGasAsync(
+ orderAddressesArray,
+ orderValuesArray,
+ fillTakerTokenAmount,
+ shouldThrowOnInsufficientBalanceOrAllowance,
+ vArray,
+ rArray,
+ sArray,
+ {
+ from: takerAddress,
+ },
+ );
+ const txHash = await exchangeInstance.fillOrdersUpTo.sendTransactionAsync(
+ orderAddressesArray,
+ orderValuesArray,
+ fillTakerTokenAmount,
+ shouldThrowOnInsufficientBalanceOrAllowance,
+ vArray,
+ rArray,
+ sArray,
+ {
+ from: takerAddress,
+ gas,
+ },
+ );
+ return txHash;
+ }
+ /**
+ * Batch version of fillOrderAsync.
+ * Executes multiple fills atomically in a single transaction.
+ * If shouldThrowOnInsufficientBalanceOrAllowance is set to false, it will continue filling subsequent orders even
+ * when earlier ones fail.
+ * When shouldThrowOnInsufficientBalanceOrAllowance is set to true, if any fill fails, the entire batch fails.
+ * @param orderFillRequests An array of objects that conform to the
+ * OrderFillRequest interface.
+ * @param shouldThrowOnInsufficientBalanceOrAllowance Whether or not you wish for the contract call to throw
+ * if upon execution any of the tokens cannot be
+ * transferred. If set to false, the call will continue to
+ * fill subsequent signedOrders even when some
+ * cannot be filled.
+ * @param takerAddress The user Ethereum address who would like to fill
+ * these orders. Must be available via the supplied
+ * Web3.Provider passed to 0x.js.
+ * @param orderTransactionOpts Optional arguments this method accepts.
+ * @return Transaction hash.
+ */
+ @decorators.contractCallErrorHandler
+ public async batchFillOrdersAsync(orderFillRequests: OrderFillRequest[],
+ shouldThrowOnInsufficientBalanceOrAllowance: boolean,
+ takerAddress: string,
+ orderTransactionOpts?: OrderTransactionOpts): Promise<string> {
+ assert.doesConformToSchema('orderFillRequests', orderFillRequests, schemas.orderFillRequestsSchema);
+ const exchangeContractAddresses = _.map(
+ orderFillRequests,
+ orderFillRequest => orderFillRequest.signedOrder.exchangeContractAddress,
+ );
+ assert.hasAtMostOneUniqueValue(exchangeContractAddresses,
+ ExchangeContractErrs.BatchOrdersMustHaveSameExchangeAddress);
+ assert.isBoolean('shouldThrowOnInsufficientBalanceOrAllowance', shouldThrowOnInsufficientBalanceOrAllowance);
+ await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
+ const shouldValidate = _.isUndefined(orderTransactionOpts) ?
+ SHOULD_VALIDATE_BY_DEFAULT :
+ orderTransactionOpts.shouldValidate;
+ if (shouldValidate) {
+ const zrxTokenAddress = await this.getZRXTokenAddressAsync();
+ const exchangeTradeEmulator = new ExchangeTransferSimulator(this._tokenWrapper);
+ for (const orderFillRequest of orderFillRequests) {
+ await this._orderValidationUtils.validateFillOrderThrowIfInvalidAsync(
+ exchangeTradeEmulator, orderFillRequest.signedOrder, orderFillRequest.takerTokenFillAmount,
+ takerAddress, zrxTokenAddress,
+ );
+ }
+ }
+ if (_.isEmpty(orderFillRequests)) {
+ throw new Error(ExchangeContractErrs.BatchOrdersMustHaveAtLeastOneItem);
+ }
+
+ const orderAddressesValuesAmountsAndSignatureArray = _.map(orderFillRequests, orderFillRequest => {
+ return [
+ ...ExchangeWrapper._getOrderAddressesAndValues(orderFillRequest.signedOrder),
+ orderFillRequest.takerTokenFillAmount,
+ orderFillRequest.signedOrder.ecSignature.v,
+ orderFillRequest.signedOrder.ecSignature.r,
+ orderFillRequest.signedOrder.ecSignature.s,
+ ];
+ });
+ // We use _.unzip<any> because _.unzip doesn't type check if values have different types :'(
+ const [orderAddressesArray, orderValuesArray, fillTakerTokenAmounts, vArray, rArray, sArray] = _.unzip<any>(
+ orderAddressesValuesAmountsAndSignatureArray,
+ );
+
+ const exchangeInstance = await this._getExchangeContractAsync();
+ const gas = await exchangeInstance.batchFillOrders.estimateGasAsync(
+ orderAddressesArray,
+ orderValuesArray,
+ fillTakerTokenAmounts,
+ shouldThrowOnInsufficientBalanceOrAllowance,
+ vArray,
+ rArray,
+ sArray,
+ {
+ from: takerAddress,
+ },
+ );
+ const txHash = await exchangeInstance.batchFillOrders.sendTransactionAsync(
+ orderAddressesArray,
+ orderValuesArray,
+ fillTakerTokenAmounts,
+ shouldThrowOnInsufficientBalanceOrAllowance,
+ vArray,
+ rArray,
+ sArray,
+ {
+ from: takerAddress,
+ gas,
+ },
+ );
+ return txHash;
+ }
+ /**
+ * Attempts to fill a specific amount of an order. If the entire amount specified cannot be filled,
+ * the fill order is abandoned.
+ * @param signedOrder An object that conforms to the SignedOrder interface. The
+ * signedOrder you wish to fill.
+ * @param fillTakerTokenAmount The total amount of the takerTokens you would like to fill.
+ * @param takerAddress The user Ethereum address who would like to fill this order.
+ * Must be available via the supplied Web3.Provider passed to 0x.js.
+ * @param orderTransactionOpts Optional arguments this method accepts.
+ * @return Transaction hash.
+ */
+ @decorators.contractCallErrorHandler
+ public async fillOrKillOrderAsync(signedOrder: SignedOrder, fillTakerTokenAmount: BigNumber,
+ takerAddress: string,
+ orderTransactionOpts?: OrderTransactionOpts): Promise<string> {
+ assert.doesConformToSchema('signedOrder', signedOrder, schemas.signedOrderSchema);
+ assert.isValidBaseUnitAmount('fillTakerTokenAmount', fillTakerTokenAmount);
+ await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
+
+ const exchangeInstance = await this._getExchangeContractAsync();
+
+ const shouldValidate = _.isUndefined(orderTransactionOpts) ?
+ SHOULD_VALIDATE_BY_DEFAULT :
+ orderTransactionOpts.shouldValidate;
+ if (shouldValidate) {
+ const zrxTokenAddress = await this.getZRXTokenAddressAsync();
+ const exchangeTradeEmulator = new ExchangeTransferSimulator(this._tokenWrapper);
+ await this._orderValidationUtils.validateFillOrKillOrderThrowIfInvalidAsync(
+ exchangeTradeEmulator, signedOrder, fillTakerTokenAmount, takerAddress, zrxTokenAddress);
+ }
+
+ const [orderAddresses, orderValues] = ExchangeWrapper._getOrderAddressesAndValues(signedOrder);
+
+ const gas = await exchangeInstance.fillOrKillOrder.estimateGasAsync(
+ orderAddresses,
+ orderValues,
+ fillTakerTokenAmount,
+ signedOrder.ecSignature.v,
+ signedOrder.ecSignature.r,
+ signedOrder.ecSignature.s,
+ {
+ from: takerAddress,
+ },
+ );
+ const txHash = await exchangeInstance.fillOrKillOrder.sendTransactionAsync(
+ orderAddresses,
+ orderValues,
+ fillTakerTokenAmount,
+ signedOrder.ecSignature.v,
+ signedOrder.ecSignature.r,
+ signedOrder.ecSignature.s,
+ {
+ from: takerAddress,
+ gas,
+ },
+ );
+ return txHash;
+ }
+ /**
+ * Batch version of fillOrKill. Allows a taker to specify a batch of orders that will either be atomically
+ * filled (each to the specified fillAmount) or aborted.
+ * @param orderFillRequests An array of objects that conform to the OrderFillRequest interface.
+ * @param takerAddress The user Ethereum address who would like to fill there orders.
+ * Must be available via the supplied Web3.Provider passed to 0x.js.
+ * @param orderTransactionOpts Optional arguments this method accepts.
+ * @return Transaction hash.
+ */
+ @decorators.contractCallErrorHandler
+ public async batchFillOrKillAsync(orderFillRequests: OrderFillRequest[],
+ takerAddress: string,
+ orderTransactionOpts?: OrderTransactionOpts): Promise<string> {
+ assert.doesConformToSchema('orderFillRequests', orderFillRequests,
+ schemas.orderFillRequestsSchema);
+ const exchangeContractAddresses = _.map(
+ orderFillRequests,
+ orderFillRequest => orderFillRequest.signedOrder.exchangeContractAddress,
+ );
+ assert.hasAtMostOneUniqueValue(exchangeContractAddresses,
+ ExchangeContractErrs.BatchOrdersMustHaveSameExchangeAddress);
+ await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
+ if (_.isEmpty(orderFillRequests)) {
+ throw new Error(ExchangeContractErrs.BatchOrdersMustHaveAtLeastOneItem);
+ }
+ const exchangeInstance = await this._getExchangeContractAsync();
+
+ const shouldValidate = _.isUndefined(orderTransactionOpts) ?
+ SHOULD_VALIDATE_BY_DEFAULT :
+ orderTransactionOpts.shouldValidate;
+ if (shouldValidate) {
+ const zrxTokenAddress = await this.getZRXTokenAddressAsync();
+ const exchangeTradeEmulator = new ExchangeTransferSimulator(this._tokenWrapper);
+ for (const orderFillRequest of orderFillRequests) {
+ await this._orderValidationUtils.validateFillOrKillOrderThrowIfInvalidAsync(
+ exchangeTradeEmulator, orderFillRequest.signedOrder, orderFillRequest.takerTokenFillAmount,
+ takerAddress, zrxTokenAddress,
+ );
+ }
+ }
+
+ const orderAddressesValuesAndTakerTokenFillAmounts = _.map(orderFillRequests, request => {
+ return [
+ ...ExchangeWrapper._getOrderAddressesAndValues(request.signedOrder),
+ request.takerTokenFillAmount,
+ request.signedOrder.ecSignature.v,
+ request.signedOrder.ecSignature.r,
+ request.signedOrder.ecSignature.s,
+ ];
+ });
+
+ // We use _.unzip<any> because _.unzip doesn't type check if values have different types :'(
+ const [orderAddresses, orderValues, fillTakerTokenAmounts, vParams, rParams, sParams] =
+ _.unzip<any>(orderAddressesValuesAndTakerTokenFillAmounts);
+
+ const gas = await exchangeInstance.batchFillOrKillOrders.estimateGasAsync(
+ orderAddresses,
+ orderValues,
+ fillTakerTokenAmounts,
+ vParams,
+ rParams,
+ sParams,
+ {
+ from: takerAddress,
+ },
+ );
+ const txHash = await exchangeInstance.batchFillOrKillOrders.sendTransactionAsync(
+ orderAddresses,
+ orderValues,
+ fillTakerTokenAmounts,
+ vParams,
+ rParams,
+ sParams,
+ {
+ from: takerAddress,
+ gas,
+ },
+ );
+ return txHash;
+ }
+ /**
+ * Cancel a given fill amount of an order. Cancellations are cumulative.
+ * @param order An object that conforms to the Order or SignedOrder interface.
+ * The order you would like to cancel.
+ * @param cancelTakerTokenAmount The amount (specified in taker tokens) that you would like to cancel.
+ * @param transactionOpts Optional arguments this method accepts.
+ * @return Transaction hash.
+ */
+ @decorators.contractCallErrorHandler
+ public async cancelOrderAsync(order: Order|SignedOrder,
+ cancelTakerTokenAmount: BigNumber,
+ orderTransactionOpts?: OrderTransactionOpts): Promise<string> {
+ assert.doesConformToSchema('order', order, schemas.orderSchema);
+ assert.isValidBaseUnitAmount('takerTokenCancelAmount', cancelTakerTokenAmount);
+ await assert.isSenderAddressAsync('order.maker', order.maker, this._web3Wrapper);
+
+ const exchangeInstance = await this._getExchangeContractAsync();
+
+ const shouldValidate = _.isUndefined(orderTransactionOpts) ?
+ SHOULD_VALIDATE_BY_DEFAULT :
+ orderTransactionOpts.shouldValidate;
+ if (shouldValidate) {
+ const orderHash = utils.getOrderHashHex(order);
+ const unavailableTakerTokenAmount = await this.getUnavailableTakerAmountAsync(orderHash);
+ await this._orderValidationUtils.validateCancelOrderThrowIfInvalidAsync(
+ order, cancelTakerTokenAmount, unavailableTakerTokenAmount);
+ }
+
+ const [orderAddresses, orderValues] = ExchangeWrapper._getOrderAddressesAndValues(order);
+ const gas = await exchangeInstance.cancelOrder.estimateGasAsync(
+ orderAddresses,
+ orderValues,
+ cancelTakerTokenAmount,
+ {
+ from: order.maker,
+ },
+ );
+ const txHash = await exchangeInstance.cancelOrder.sendTransactionAsync(
+ orderAddresses,
+ orderValues,
+ cancelTakerTokenAmount,
+ {
+ from: order.maker,
+ gas,
+ },
+ );
+ return txHash;
+ }
+ /**
+ * Batch version of cancelOrderAsync. Atomically cancels multiple orders in a single transaction.
+ * All orders must be from the same maker.
+ * @param orderCancellationRequests An array of objects that conform to the OrderCancellationRequest
+ * interface.
+ * @param transactionOpts Optional arguments this method accepts.
+ * @return Transaction hash.
+ */
+ @decorators.contractCallErrorHandler
+ public async batchCancelOrdersAsync(orderCancellationRequests: OrderCancellationRequest[],
+ orderTransactionOpts?: OrderTransactionOpts): Promise<string> {
+ assert.doesConformToSchema('orderCancellationRequests', orderCancellationRequests,
+ schemas.orderCancellationRequestsSchema);
+ const exchangeContractAddresses = _.map(
+ orderCancellationRequests,
+ orderCancellationRequest => orderCancellationRequest.order.exchangeContractAddress,
+ );
+ assert.hasAtMostOneUniqueValue(exchangeContractAddresses,
+ ExchangeContractErrs.BatchOrdersMustHaveSameExchangeAddress);
+ const makers = _.map(orderCancellationRequests, cancellationRequest => cancellationRequest.order.maker);
+ assert.hasAtMostOneUniqueValue(makers, ExchangeContractErrs.MultipleMakersInSingleCancelBatchDisallowed);
+ const maker = makers[0];
+ await assert.isSenderAddressAsync('maker', maker, this._web3Wrapper);
+ const shouldValidate = _.isUndefined(orderTransactionOpts) ?
+ SHOULD_VALIDATE_BY_DEFAULT :
+ orderTransactionOpts.shouldValidate;
+ if (shouldValidate) {
+ for (const orderCancellationRequest of orderCancellationRequests) {
+ const orderHash = utils.getOrderHashHex(orderCancellationRequest.order);
+ const unavailableTakerTokenAmount = await this.getUnavailableTakerAmountAsync(orderHash);
+ await this._orderValidationUtils.validateCancelOrderThrowIfInvalidAsync(
+ orderCancellationRequest.order, orderCancellationRequest.takerTokenCancelAmount,
+ unavailableTakerTokenAmount,
+ );
+ }
+
+ }
+ if (_.isEmpty(orderCancellationRequests)) {
+ throw new Error(ExchangeContractErrs.BatchOrdersMustHaveAtLeastOneItem);
+ }
+ const exchangeInstance = await this._getExchangeContractAsync();
+ const orderAddressesValuesAndTakerTokenCancelAmounts = _.map(orderCancellationRequests, cancellationRequest => {
+ return [
+ ...ExchangeWrapper._getOrderAddressesAndValues(cancellationRequest.order),
+ cancellationRequest.takerTokenCancelAmount,
+ ];
+ });
+ // We use _.unzip<any> because _.unzip doesn't type check if values have different types :'(
+ const [orderAddresses, orderValues, cancelTakerTokenAmounts] =
+ _.unzip<any>(orderAddressesValuesAndTakerTokenCancelAmounts);
+ const gas = await exchangeInstance.batchCancelOrders.estimateGasAsync(
+ orderAddresses,
+ orderValues,
+ cancelTakerTokenAmounts,
+ {
+ from: maker,
+ },
+ );
+ const txHash = await exchangeInstance.batchCancelOrders.sendTransactionAsync(
+ orderAddresses,
+ orderValues,
+ cancelTakerTokenAmounts,
+ {
+ from: maker,
+ gas,
+ },
+ );
+ return txHash;
+ }
+ /**
+ * Subscribe to an event type emitted by the Exchange contract.
+ * @param eventName The exchange 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 async subscribeAsync<ArgsType extends ExchangeContractEventArgs>(
+ eventName: ExchangeEvents, indexFilterValues: IndexedFilterValues,
+ callback: EventCallback<ArgsType>): Promise<string> {
+ assert.doesBelongToStringEnum('eventName', eventName, ExchangeEvents);
+ assert.doesConformToSchema('indexFilterValues', indexFilterValues, schemas.indexFilterValuesSchema);
+ assert.isFunction('callback', callback);
+ const exchangeContractAddress = await this.getContractAddressAsync();
+ const subscriptionToken = this._subscribe<ArgsType>(
+ exchangeContractAddress, eventName, indexFilterValues, artifacts.ExchangeArtifact.abi, callback,
+ );
+ return subscriptionToken;
+ }
+ /**
+ * Cancel a subscription
+ * @param subscriptionToken Subscription token returned by `subscribe()`
+ */
+ public unsubscribe(subscriptionToken: string): void {
+ this._unsubscribe(subscriptionToken);
+ }
+ /**
+ * Gets historical logs without creating a subscription
+ * @param eventName The exchange contract event you would like to subscribe to.
+ * @param subscriptionOpts Subscriptions options that let you configure the subscription.
+ * @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 ExchangeContractEventArgs>(
+ eventName: ExchangeEvents, subscriptionOpts: SubscriptionOpts, indexFilterValues: IndexedFilterValues,
+ ): Promise<Array<LogWithDecodedArgs<ArgsType>>> {
+ assert.doesBelongToStringEnum('eventName', eventName, ExchangeEvents);
+ assert.doesConformToSchema('subscriptionOpts', subscriptionOpts, schemas.subscriptionOptsSchema);
+ assert.doesConformToSchema('indexFilterValues', indexFilterValues, schemas.indexFilterValuesSchema);
+ const exchangeContractAddress = await this.getContractAddressAsync();
+ const logs = await this._getLogsAsync<ArgsType>(
+ exchangeContractAddress, eventName, subscriptionOpts, indexFilterValues, artifacts.ExchangeArtifact.abi,
+ );
+ return logs;
+ }
+ /**
+ * Retrieves the Ethereum address of the Exchange contract deployed on the network
+ * that the user-passed web3 provider is connected to.
+ * @returns The Ethereum address of the Exchange contract being used.
+ */
+ public async getContractAddressAsync(): Promise<string> {
+ const exchangeInstance = await this._getExchangeContractAsync();
+ const exchangeAddress = exchangeInstance.address;
+ return exchangeAddress;
+ }
+ /**
+ * Checks if order is still fillable and throws an error otherwise. Useful for orderbook
+ * pruning where you want to remove stale orders without knowing who the taker will be.
+ * @param signedOrder An object that conforms to the SignedOrder interface. The
+ * signedOrder you wish to validate.
+ * @param opts An object that conforms to the ValidateOrderFillableOpts
+ * interface. Allows specifying a specific fillTakerTokenAmount
+ * to validate for.
+ */
+ public async validateOrderFillableOrThrowAsync(
+ signedOrder: SignedOrder, opts?: ValidateOrderFillableOpts,
+ ): Promise<void> {
+ assert.doesConformToSchema('signedOrder', signedOrder, schemas.signedOrderSchema);
+ const zrxTokenAddress = await this.getZRXTokenAddressAsync();
+ const expectedFillTakerTokenAmount = !_.isUndefined(opts) ? opts.expectedFillTakerTokenAmount : undefined;
+ const exchangeTradeEmulator = new ExchangeTransferSimulator(this._tokenWrapper);
+ await this._orderValidationUtils.validateOrderFillableOrThrowAsync(
+ exchangeTradeEmulator, signedOrder, zrxTokenAddress, expectedFillTakerTokenAmount,
+ );
+ }
+ /**
+ * Checks if order fill will succeed and throws an error otherwise.
+ * @param signedOrder An object that conforms to the SignedOrder interface. The
+ * signedOrder you wish to fill.
+ * @param fillTakerTokenAmount The total amount of the takerTokens you would like to fill.
+ * @param takerAddress The user Ethereum address who would like to fill this order.
+ * Must be available via the supplied Web3.Provider passed to 0x.js.
+ */
+ public async validateFillOrderThrowIfInvalidAsync(signedOrder: SignedOrder,
+ fillTakerTokenAmount: BigNumber,
+ takerAddress: string): Promise<void> {
+ assert.doesConformToSchema('signedOrder', signedOrder, schemas.signedOrderSchema);
+ assert.isValidBaseUnitAmount('fillTakerTokenAmount', fillTakerTokenAmount);
+ await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
+ const zrxTokenAddress = await this.getZRXTokenAddressAsync();
+ const exchangeTradeEmulator = new ExchangeTransferSimulator(this._tokenWrapper);
+ await this._orderValidationUtils.validateFillOrderThrowIfInvalidAsync(
+ exchangeTradeEmulator, signedOrder, fillTakerTokenAmount, takerAddress, zrxTokenAddress);
+ }
+ /**
+ * Checks if cancelling a given order will succeed and throws an informative error if it won't.
+ * @param order An object that conforms to the Order or SignedOrder interface.
+ * The order you would like to cancel.
+ * @param cancelTakerTokenAmount The amount (specified in taker tokens) that you would like to cancel.
+ */
+ public async validateCancelOrderThrowIfInvalidAsync(
+ order: Order, cancelTakerTokenAmount: BigNumber): Promise<void> {
+ assert.doesConformToSchema('order', order, schemas.orderSchema);
+ assert.isValidBaseUnitAmount('cancelTakerTokenAmount', cancelTakerTokenAmount);
+ const orderHash = utils.getOrderHashHex(order);
+ const unavailableTakerTokenAmount = await this.getUnavailableTakerAmountAsync(orderHash);
+ await this._orderValidationUtils.validateCancelOrderThrowIfInvalidAsync(
+ order, cancelTakerTokenAmount, unavailableTakerTokenAmount);
+ }
+ /**
+ * Checks if calling fillOrKill on a given order will succeed and throws an informative error if it won't.
+ * @param signedOrder An object that conforms to the SignedOrder interface. The
+ * signedOrder you wish to fill.
+ * @param fillTakerTokenAmount The total amount of the takerTokens you would like to fill.
+ * @param takerAddress The user Ethereum address who would like to fill this order.
+ * Must be available via the supplied Web3.Provider passed to 0x.js.
+ */
+ public async validateFillOrKillOrderThrowIfInvalidAsync(signedOrder: SignedOrder,
+ fillTakerTokenAmount: BigNumber,
+ takerAddress: string): Promise<void> {
+ assert.doesConformToSchema('signedOrder', signedOrder, schemas.signedOrderSchema);
+ assert.isValidBaseUnitAmount('fillTakerTokenAmount', fillTakerTokenAmount);
+ await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
+ const zrxTokenAddress = await this.getZRXTokenAddressAsync();
+ const exchangeTradeEmulator = new ExchangeTransferSimulator(this._tokenWrapper);
+ await this._orderValidationUtils.validateFillOrKillOrderThrowIfInvalidAsync(
+ exchangeTradeEmulator, signedOrder, fillTakerTokenAmount, takerAddress, zrxTokenAddress);
+ }
+ /**
+ * Checks if rounding error will be > 0.1% when computing makerTokenAmount by doing:
+ * `(fillTakerTokenAmount * makerTokenAmount) / takerTokenAmount`.
+ * 0x Protocol does not accept any trades that result in large rounding errors. This means that tokens with few or
+ * no decimals can only be filled in quantities and ratios that avoid large rounding errors.
+ * @param fillTakerTokenAmount The amount of the order (in taker tokens baseUnits) that you wish to fill.
+ * @param takerTokenAmount The order size on the taker side
+ * @param makerTokenAmount The order size on the maker side
+ */
+ public async isRoundingErrorAsync(fillTakerTokenAmount: BigNumber,
+ takerTokenAmount: BigNumber,
+ makerTokenAmount: BigNumber): Promise<boolean> {
+ assert.isValidBaseUnitAmount('fillTakerTokenAmount', fillTakerTokenAmount);
+ assert.isValidBaseUnitAmount('takerTokenAmount', takerTokenAmount);
+ assert.isValidBaseUnitAmount('makerTokenAmount', makerTokenAmount);
+ const exchangeInstance = await this._getExchangeContractAsync();
+ const isRoundingError = await exchangeInstance.isRoundingError.callAsync(
+ fillTakerTokenAmount, takerTokenAmount, makerTokenAmount,
+ );
+ return isRoundingError;
+ }
+ /**
+ * Checks if logs contain LogError, which is emmited by Exchange contract on transaction failure.
+ * @param logs Transaction logs as returned by `zeroEx.awaitTransactionMinedAsync`
+ */
+ public throwLogErrorsAsErrors(logs: Array<LogWithDecodedArgs<DecodedLogArgs>|Web3.LogEntry>): void {
+ const errLog = _.find(logs, {
+ event: ExchangeEvents.LogError,
+ }) as LogWithDecodedArgs<LogErrorContractEventArgs>|undefined;
+ if (!_.isUndefined(errLog)) {
+ const logArgs = errLog.args;
+ const errCode = logArgs.errorId.toNumber();
+ const errMessage = this._exchangeContractErrCodesToMsg[errCode];
+ throw new Error(errMessage);
+ }
+ }
+ /**
+ * Returns the ZRX token address used by the exchange contract.
+ * @return Address of ZRX token
+ */
+ public async getZRXTokenAddressAsync(): Promise<string> {
+ const exchangeInstance = await this._getExchangeContractAsync();
+ const ZRXtokenAddress = await exchangeInstance.ZRX_TOKEN_CONTRACT.callAsync();
+ return ZRXtokenAddress;
+ }
+ private async _invalidateContractInstancesAsync(): Promise<void> {
+ this.unsubscribeAll();
+ delete this._exchangeContractIfExists;
+ }
+ private async _isValidSignatureUsingContractCallAsync(dataHex: string, ecSignature: ECSignature,
+ signerAddressHex: string): Promise<boolean> {
+ assert.isHexString('dataHex', dataHex);
+ assert.doesConformToSchema('ecSignature', ecSignature, schemas.ecSignatureSchema);
+ assert.isETHAddressHex('signerAddressHex', signerAddressHex);
+
+ const exchangeInstance = await this._getExchangeContractAsync();
+
+ const isValidSignature = await exchangeInstance.isValidSignature.callAsync(
+ signerAddressHex,
+ dataHex,
+ ecSignature.v,
+ ecSignature.r,
+ ecSignature.s,
+ );
+ return isValidSignature;
+ }
+ private async _getOrderHashHexUsingContractCallAsync(order: Order|SignedOrder): Promise<string> {
+ const exchangeInstance = await this._getExchangeContractAsync();
+ const [orderAddresses, orderValues] = ExchangeWrapper._getOrderAddressesAndValues(order);
+ const orderHashHex = await exchangeInstance.getOrderHash.callAsync(orderAddresses, orderValues);
+ return orderHashHex;
+ }
+ private async _getExchangeContractAsync(): Promise<ExchangeContract> {
+ if (!_.isUndefined(this._exchangeContractIfExists)) {
+ return this._exchangeContractIfExists;
+ }
+ const contractInstance = await this._instantiateContractIfExistsAsync<ExchangeContract>(
+ artifacts.ExchangeArtifact, this._contractAddressIfExists,
+ );
+ this._exchangeContractIfExists = contractInstance as ExchangeContract;
+ return this._exchangeContractIfExists;
+ }
+ private async _getTokenTransferProxyAddressAsync(): Promise<string> {
+ const exchangeInstance = await this._getExchangeContractAsync();
+ const tokenTransferProxyAddress = await exchangeInstance.TOKEN_TRANSFER_PROXY_CONTRACT.callAsync();
+ const tokenTransferProxyAddressLowerCase = tokenTransferProxyAddress.toLowerCase();
+ return tokenTransferProxyAddressLowerCase;
+ }
+}
diff --git a/packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts b/packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts
new file mode 100644
index 000000000..2cc5a9aa0
--- /dev/null
+++ b/packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts
@@ -0,0 +1,122 @@
+import * as _ from 'lodash';
+import {Web3Wrapper} from '../web3_wrapper';
+import {assert} from '../utils/assert';
+import {Token, TokenRegistryContract, TokenMetadata} from '../types';
+import {constants} from '../utils/constants';
+import {ContractWrapper} from './contract_wrapper';
+import {artifacts} from '../artifacts';
+
+/**
+ * This class includes all the functionality related to interacting with the 0x Token Registry smart contract.
+ */
+export class TokenRegistryWrapper extends ContractWrapper {
+ private _tokenRegistryContractIfExists?: TokenRegistryContract;
+ private _contractAddressIfExists?: string;
+ constructor(web3Wrapper: Web3Wrapper, contractAddressIfExists?: string) {
+ super(web3Wrapper);
+ 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 tokenRegistryContract = await this._getTokenRegistryContractAsync();
+
+ const addresses = await this.getTokenAddressesAsync();
+ const tokenPromises: Array<Promise<Token|undefined>> = _.map(
+ addresses,
+ (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();
+ return addresses;
+ }
+ /**
+ * 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 tokenRegistryContract = await this._getTokenRegistryContractAsync();
+ const metadata = await tokenRegistryContract.getTokenMetaData.callAsync(address);
+ const token = this._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 = this._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 = this._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 async getContractAddressAsync(): Promise<string> {
+ const tokenRegistryInstance = await this._getTokenRegistryContractAsync();
+ const tokenRegistryAddress = tokenRegistryInstance.address;
+ return tokenRegistryAddress;
+ }
+ private _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].toNumber(),
+ };
+ return token;
+ }
+ private _invalidateContractInstance(): void {
+ delete this._tokenRegistryContractIfExists;
+ }
+ private async _getTokenRegistryContractAsync(): Promise<TokenRegistryContract> {
+ if (!_.isUndefined(this._tokenRegistryContractIfExists)) {
+ return this._tokenRegistryContractIfExists;
+ }
+ const contractInstance = await this._instantiateContractIfExistsAsync<TokenRegistryContract>(
+ artifacts.TokenRegistryArtifact, this._contractAddressIfExists,
+ );
+ this._tokenRegistryContractIfExists = contractInstance as TokenRegistryContract;
+ return this._tokenRegistryContractIfExists;
+ }
+}
diff --git a/packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts b/packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts
new file mode 100644
index 000000000..f81845af9
--- /dev/null
+++ b/packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts
@@ -0,0 +1,60 @@
+import * as _ from 'lodash';
+import {Web3Wrapper} from '../web3_wrapper';
+import {ContractWrapper} from './contract_wrapper';
+import {artifacts} from '../artifacts';
+import {TokenTransferProxyContract} from '../types';
+
+/**
+ * This class includes the functionality related to interacting with the TokenTransferProxy contract.
+ */
+export class TokenTransferProxyWrapper extends ContractWrapper {
+ private _tokenTransferProxyContractIfExists?: TokenTransferProxyContract;
+ private _tokenTransferProxyContractAddressFetcher: () => Promise<string>;
+ constructor(web3Wrapper: Web3Wrapper, tokenTransferProxyContractAddressFetcher: () => Promise<string>) {
+ super(web3Wrapper);
+ this._tokenTransferProxyContractAddressFetcher = tokenTransferProxyContractAddressFetcher;
+ }
+ /**
+ * Check if the Exchange contract address is authorized by the TokenTransferProxy contract.
+ * @param exchangeContractAddress The hex encoded address of the Exchange contract to call.
+ * @return Whether the exchangeContractAddress is authorized.
+ */
+ public async isAuthorizedAsync(exchangeContractAddress: string): Promise<boolean> {
+ const tokenTransferProxyContractInstance = await this._getTokenTransferProxyContractAsync();
+ const isAuthorized = await tokenTransferProxyContractInstance.authorized.callAsync(exchangeContractAddress);
+ return isAuthorized;
+ }
+ /**
+ * Get the list of all Exchange contract addresses authorized by the TokenTransferProxy contract.
+ * @return The list of authorized addresses.
+ */
+ public async getAuthorizedAddressesAsync(): Promise<string[]> {
+ const tokenTransferProxyContractInstance = await this._getTokenTransferProxyContractAsync();
+ const authorizedAddresses = await tokenTransferProxyContractInstance.getAuthorizedAddresses.callAsync();
+ return authorizedAddresses;
+ }
+ /**
+ * Retrieves the Ethereum address of the TokenTransferProxy contract deployed on the network
+ * that the user-passed web3 provider is connected to.
+ * @returns The Ethereum address of the TokenTransferProxy contract being used.
+ */
+ public async getContractAddressAsync(): Promise<string> {
+ const proxyInstance = await this._getTokenTransferProxyContractAsync();
+ const proxyAddress = proxyInstance.address;
+ return proxyAddress;
+ }
+ private _invalidateContractInstance(): void {
+ delete this._tokenTransferProxyContractIfExists;
+ }
+ private async _getTokenTransferProxyContractAsync(): Promise<TokenTransferProxyContract> {
+ if (!_.isUndefined(this._tokenTransferProxyContractIfExists)) {
+ return this._tokenTransferProxyContractIfExists;
+ }
+ const contractAddress = await this._tokenTransferProxyContractAddressFetcher();
+ const contractInstance = await this._instantiateContractIfExistsAsync<TokenTransferProxyContract>(
+ artifacts.TokenTransferProxyArtifact, contractAddress,
+ );
+ this._tokenTransferProxyContractIfExists = contractInstance as TokenTransferProxyContract;
+ return this._tokenTransferProxyContractIfExists;
+ }
+}
diff --git a/packages/0x.js/src/contract_wrappers/token_wrapper.ts b/packages/0x.js/src/contract_wrappers/token_wrapper.ts
new file mode 100644
index 000000000..614ac19d4
--- /dev/null
+++ b/packages/0x.js/src/contract_wrappers/token_wrapper.ts
@@ -0,0 +1,313 @@
+import * as _ from 'lodash';
+import BigNumber from 'bignumber.js';
+import {schemas} from '0x-json-schemas';
+import {Web3Wrapper} from '../web3_wrapper';
+import {assert} from '../utils/assert';
+import {constants} from '../utils/constants';
+import {ContractWrapper} from './contract_wrapper';
+import {AbiDecoder} from '../utils/abi_decoder';
+import {artifacts} from '../artifacts';
+import {
+ TokenContract,
+ ZeroExError,
+ TokenEvents,
+ IndexedFilterValues,
+ SubscriptionOpts,
+ MethodOpts,
+ LogWithDecodedArgs,
+ EventCallback,
+ TokenContractEventArgs,
+} from '../types';
+
+const ALLOWANCE_TO_ZERO_GAS_AMOUNT = 47275;
+
+/**
+ * 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 _tokenTransferProxyContractAddressFetcher: () => Promise<string>;
+ constructor(web3Wrapper: Web3Wrapper, abiDecoder: AbiDecoder,
+ tokenTransferProxyContractAddressFetcher: () => Promise<string>) {
+ super(web3Wrapper, abiDecoder);
+ this._tokenContractsByAddress = {};
+ this._tokenTransferProxyContractAddressFetcher = tokenTransferProxyContractAddressFetcher;
+ }
+ /**
+ * 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 tokenContract = await this._getTokenContractAsync(tokenAddress);
+ const defaultBlock = _.isUndefined(methodOpts) ? undefined : methodOpts.defaultBlock;
+ let balance = await tokenContract.balanceOf.callAsync(ownerAddress, 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.
+ * @return Transaction hash.
+ */
+ public async setAllowanceAsync(tokenAddress: string, ownerAddress: string, spenderAddress: string,
+ amountInBaseUnits: BigNumber): Promise<string> {
+ await assert.isSenderAddressAsync('ownerAddress', ownerAddress, this._web3Wrapper);
+ assert.isETHAddressHex('spenderAddress', spenderAddress);
+ assert.isETHAddressHex('tokenAddress', tokenAddress);
+ assert.isValidBaseUnitAmount('amountInBaseUnits', amountInBaseUnits);
+
+ const tokenContract = await this._getTokenContractAsync(tokenAddress);
+ // Hack: for some reason default estimated gas amount causes `base fee exceeds gas limit` exception
+ // on testrpc. Probably related to https://github.com/ethereumjs/testrpc/issues/294
+ // TODO: Debug issue in testrpc and submit a PR, then remove this hack
+ const networkIdIfExists = await this._web3Wrapper.getNetworkIdIfExistsAsync();
+ const gas = networkIdIfExists === constants.TESTRPC_NETWORK_ID ? ALLOWANCE_TO_ZERO_GAS_AMOUNT : undefined;
+ const txHash = await tokenContract.approve.sendTransactionAsync(spenderAddress, amountInBaseUnits, {
+ from: ownerAddress,
+ gas,
+ });
+ 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.
+ * @return Transaction hash.
+ */
+ public async setUnlimitedAllowanceAsync(tokenAddress: string, ownerAddress: string,
+ spenderAddress: string): Promise<string> {
+ const txHash = await this.setAllowanceAsync(
+ tokenAddress, ownerAddress, spenderAddress, this.UNLIMITED_ALLOWANCE_IN_BASE_UNITS,
+ );
+ 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);
+
+ const tokenContract = await this._getTokenContractAsync(tokenAddress);
+ const defaultBlock = _.isUndefined(methodOpts) ? undefined : methodOpts.defaultBlock;
+ let allowanceInBaseUnits = await tokenContract.allowance.callAsync(ownerAddress, spenderAddress, 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 proxyAddress = await this._getTokenTransferProxyAddressAsync();
+ const allowanceInBaseUnits = await this.getAllowanceAsync(tokenAddress, ownerAddress, 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.
+ * @return Transaction hash.
+ */
+ public async setProxyAllowanceAsync(tokenAddress: string, ownerAddress: string,
+ amountInBaseUnits: BigNumber): Promise<string> {
+ assert.isETHAddressHex('ownerAddress', ownerAddress);
+ assert.isETHAddressHex('tokenAddress', tokenAddress);
+ assert.isValidBaseUnitAmount('amountInBaseUnits', amountInBaseUnits);
+
+ const proxyAddress = await this._getTokenTransferProxyAddressAsync();
+ const txHash = await this.setAllowanceAsync(tokenAddress, ownerAddress, proxyAddress, amountInBaseUnits);
+ 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.
+ * @return Transaction hash.
+ */
+ public async setUnlimitedProxyAllowanceAsync(tokenAddress: string, ownerAddress: string): Promise<string> {
+ const txHash = await this.setProxyAllowanceAsync(
+ tokenAddress, ownerAddress, this.UNLIMITED_ALLOWANCE_IN_BASE_UNITS,
+ );
+ 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.
+ * @return Transaction hash.
+ */
+ public async transferAsync(tokenAddress: string, fromAddress: string, toAddress: string,
+ amountInBaseUnits: BigNumber): Promise<string> {
+ assert.isETHAddressHex('tokenAddress', tokenAddress);
+ await assert.isSenderAddressAsync('fromAddress', fromAddress, this._web3Wrapper);
+ assert.isETHAddressHex('toAddress', toAddress);
+ assert.isValidBaseUnitAmount('amountInBaseUnits', amountInBaseUnits);
+
+ const tokenContract = await this._getTokenContractAsync(tokenAddress);
+
+ const fromAddressBalance = await this.getBalanceAsync(tokenAddress, fromAddress);
+ if (fromAddressBalance.lessThan(amountInBaseUnits)) {
+ throw new Error(ZeroExError.InsufficientBalanceForTransfer);
+ }
+
+ const txHash = await tokenContract.transfer.sendTransactionAsync(toAddress, amountInBaseUnits, {
+ from: fromAddress,
+ });
+ 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.
+ * @return Transaction hash.
+ */
+ public async transferFromAsync(tokenAddress: string, fromAddress: string, toAddress: string,
+ senderAddress: string, amountInBaseUnits: BigNumber):
+ Promise<string> {
+ assert.isETHAddressHex('tokenAddress', tokenAddress);
+ assert.isETHAddressHex('fromAddress', fromAddress);
+ assert.isETHAddressHex('toAddress', toAddress);
+ await assert.isSenderAddressAsync('senderAddress', senderAddress, this._web3Wrapper);
+ assert.isValidBaseUnitAmount('amountInBaseUnits', amountInBaseUnits);
+
+ const tokenContract = await this._getTokenContractAsync(tokenAddress);
+
+ const fromAddressAllowance = await this.getAllowanceAsync(tokenAddress, fromAddress, senderAddress);
+ if (fromAddressAllowance.lessThan(amountInBaseUnits)) {
+ throw new Error(ZeroExError.InsufficientAllowanceForTransfer);
+ }
+
+ const fromAddressBalance = await this.getBalanceAsync(tokenAddress, fromAddress);
+ if (fromAddressBalance.lessThan(amountInBaseUnits)) {
+ throw new Error(ZeroExError.InsufficientBalanceForTransfer);
+ }
+
+ const txHash = await tokenContract.transferFrom.sendTransactionAsync(
+ fromAddress, toAddress, amountInBaseUnits,
+ {
+ from: senderAddress,
+ },
+ );
+ 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);
+ assert.doesBelongToStringEnum('eventName', eventName, TokenEvents);
+ assert.doesConformToSchema('indexFilterValues', indexFilterValues, schemas.indexFilterValuesSchema);
+ assert.isFunction('callback', callback);
+ const subscriptionToken = this._subscribe<ArgsType>(
+ tokenAddress, 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);
+ }
+ /**
+ * Gets historical logs without creating a subscription
+ * @param tokenAddress An address of the token that emmited the logs.
+ * @param eventName The token contract event you would like to subscribe to.
+ * @param subscriptionOpts Subscriptions options that let you configure the subscription.
+ * @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, subscriptionOpts: SubscriptionOpts,
+ indexFilterValues: IndexedFilterValues): Promise<Array<LogWithDecodedArgs<ArgsType>>> {
+ assert.isETHAddressHex('tokenAddress', tokenAddress);
+ assert.doesBelongToStringEnum('eventName', eventName, TokenEvents);
+ assert.doesConformToSchema('subscriptionOpts', subscriptionOpts, schemas.subscriptionOptsSchema);
+ assert.doesConformToSchema('indexFilterValues', indexFilterValues, schemas.indexFilterValuesSchema);
+ const logs = await this._getLogsAsync<ArgsType>(
+ tokenAddress, eventName, subscriptionOpts, indexFilterValues, artifacts.TokenArtifact.abi,
+ );
+ return logs;
+ }
+ private _invalidateContractInstancesAsync(): void {
+ this.unsubscribeAll();
+ this._tokenContractsByAddress = {};
+ }
+ private async _getTokenContractAsync(tokenAddress: string): Promise<TokenContract> {
+ let tokenContract = this._tokenContractsByAddress[tokenAddress];
+ if (!_.isUndefined(tokenContract)) {
+ return tokenContract;
+ }
+ const contractInstance = await this._instantiateContractIfExistsAsync<TokenContract>(
+ artifacts.TokenArtifact, tokenAddress,
+ );
+ tokenContract = contractInstance as TokenContract;
+ this._tokenContractsByAddress[tokenAddress] = tokenContract;
+ return tokenContract;
+ }
+ private async _getTokenTransferProxyAddressAsync(): Promise<string> {
+ const tokenTransferProxyContractAddress = await this._tokenTransferProxyContractAddressFetcher();
+ return tokenTransferProxyContractAddress;
+ }
+}
diff --git a/packages/0x.js/src/globals.d.ts b/packages/0x.js/src/globals.d.ts
new file mode 100644
index 000000000..cb3800056
--- /dev/null
+++ b/packages/0x.js/src/globals.d.ts
@@ -0,0 +1,80 @@
+/// <reference types='chai-typescript-typings' />
+/// <reference types='chai-as-promised-typescript-typings' />
+declare module 'web3_beta';
+declare module 'chai-bignumber';
+declare module 'dirty-chai';
+declare module 'request-promise-native';
+declare module 'web3-provider-engine';
+declare module 'web3-provider-engine/subproviders/rpc';
+
+// HACK: In order to merge the bignumber declaration added by chai-bignumber to the chai Assertion
+// interface we must use `namespace` as the Chai definitelyTyped definition does. Since we otherwise
+// disallow `namespace`, we disable tslint for the following.
+/* tslint:disable */
+declare namespace Chai {
+ interface Assertion {
+ bignumber: Assertion;
+ // HACK: In order to comply with chai-as-promised we make eventually a `PromisedAssertion` not an `Assertion`
+ eventually: PromisedAssertion;
+ }
+}
+/* tslint:enable */
+
+declare module '*.json' {
+ const json: any;
+ /* tslint:disable */
+ export default json;
+ /* tslint:enable */
+}
+
+// find-version declarations
+declare function findVersions(version: string): string[];
+declare module 'find-versions' {
+ export = findVersions;
+}
+
+// compare-version declarations
+declare function compareVersions(firstVersion: string, secondVersion: string): number;
+declare module 'compare-versions' {
+ export = compareVersions;
+}
+
+// es6-promisify declarations
+declare function promisify(original: any, settings?: any): ((...arg: any[]) => Promise<any>);
+declare module 'es6-promisify' {
+ export = promisify;
+}
+
+declare module 'ethereumjs-abi' {
+ const soliditySHA3: (argTypes: string[], args: any[]) => Buffer;
+}
+
+// truffle-hdwallet-provider declarations
+declare module 'truffle-hdwallet-provider' {
+ import * as Web3 from 'web3';
+ class HDWalletProvider implements Web3.Provider {
+ constructor(mnemonic: string, rpcUrl: string);
+ public sendAsync(
+ payload: Web3.JSONRPCRequestPayload,
+ callback: (err: Error, result: Web3.JSONRPCResponsePayload) => void,
+ ): void;
+ }
+ export = HDWalletProvider;
+}
+
+// abi-decoder declarations
+interface DecodedLogArg {
+}
+interface DecodedLog {
+ name: string;
+ events: DecodedLogArg[];
+}
+declare module 'abi-decoder' {
+ import * as Web3 from 'web3';
+ const addABI: (abi: Web3.AbiDefinition) => void;
+ const decodeLogs: (logs: Web3.LogEntry[]) => DecodedLog[];
+}
+
+declare module 'web3/lib/solidity/coder' {
+ const decodeParams: (types: string[], data: string) => any[];
+}
diff --git a/packages/0x.js/src/globalsAugment.d.ts b/packages/0x.js/src/globalsAugment.d.ts
new file mode 100644
index 000000000..60e2312a3
--- /dev/null
+++ b/packages/0x.js/src/globalsAugment.d.ts
@@ -0,0 +1,23 @@
+import BigNumber from 'bignumber.js';
+
+// HACK: This module overrides the Chai namespace so that we can use BigNumber types inside.
+// Source: https://github.com/Microsoft/TypeScript/issues/7352#issuecomment-191547232
+declare global {
+ // HACK: In order to merge the bignumber declaration added by chai-bignumber to the chai Assertion
+ // interface we must use `namespace` as the Chai definitelyTyped definition does. Since we otherwise
+ // disallow `namespace`, we disable tslint for the following.
+ /* tslint:disable */
+ namespace Chai {
+ interface NumberComparer {
+ (value: number|BigNumber, message?: string): Assertion;
+ }
+ interface NumericComparison {
+ greaterThan: NumberComparer;
+ }
+ }
+ /* tslint:enable */
+ interface DecodedLogArg {
+ name: string;
+ value: string|BigNumber;
+ }
+}
diff --git a/packages/0x.js/src/index.ts b/packages/0x.js/src/index.ts
new file mode 100644
index 000000000..1b3e893ba
--- /dev/null
+++ b/packages/0x.js/src/index.ts
@@ -0,0 +1,45 @@
+export {ZeroEx} from './0x';
+
+export {
+ Order,
+ SignedOrder,
+ ECSignature,
+ ZeroExError,
+ EventCallback,
+ EventCallbackAsync,
+ EventCallbackSync,
+ ExchangeContractErrs,
+ ContractEvent,
+ Token,
+ ExchangeEvents,
+ TokenEvents,
+ IndexedFilterValues,
+ SubscriptionOpts,
+ BlockParam,
+ OrderCancellationRequest,
+ OrderFillRequest,
+ LogErrorContractEventArgs,
+ LogCancelContractEventArgs,
+ LogFillContractEventArgs,
+ ExchangeContractEventArgs,
+ TransferContractEventArgs,
+ ApprovalContractEventArgs,
+ TokenContractEventArgs,
+ ContractEventArgs,
+ ContractEventArg,
+ Web3Provider,
+ ZeroExConfig,
+ TransactionReceipt,
+ TransactionReceiptWithDecodedLogs,
+ LogWithDecodedArgs,
+ MethodOpts,
+ OrderTransactionOpts,
+ FilterObject,
+ LogEvent,
+ DecodedLogEvent,
+ EventWatcherCallback,
+ OnOrderStateChangeCallback,
+ OrderStateValid,
+ OrderStateInvalid,
+ OrderState,
+} from './types';
diff --git a/packages/0x.js/src/order_watcher/event_watcher.ts b/packages/0x.js/src/order_watcher/event_watcher.ts
new file mode 100644
index 000000000..81529a98c
--- /dev/null
+++ b/packages/0x.js/src/order_watcher/event_watcher.ts
@@ -0,0 +1,88 @@
+import * as Web3 from 'web3';
+import * as _ from 'lodash';
+import {Web3Wrapper} from '../web3_wrapper';
+import {
+ BlockParamLiteral,
+ EventCallback,
+ EventWatcherCallback,
+ ZeroExError,
+} from '../types';
+import {AbiDecoder} from '../utils/abi_decoder';
+import {intervalUtils} from '../utils/interval_utils';
+import {assert} from '../utils/assert';
+import {utils} from '../utils/utils';
+
+const DEFAULT_EVENT_POLLING_INTERVAL = 200;
+
+enum LogEventState {
+ Removed,
+ Added,
+}
+
+/*
+ * The EventWatcher watches for blockchain events at the specified block confirmation
+ * depth.
+ */
+export class EventWatcher {
+ private _web3Wrapper: Web3Wrapper;
+ private _pollingIntervalMs: number;
+ private _intervalIdIfExists?: NodeJS.Timer;
+ private _lastEvents: Web3.LogEntry[] = [];
+ constructor(web3Wrapper: Web3Wrapper, pollingIntervalMs: undefined|number) {
+ this._web3Wrapper = web3Wrapper;
+ this._pollingIntervalMs = _.isUndefined(pollingIntervalMs) ?
+ DEFAULT_EVENT_POLLING_INTERVAL :
+ pollingIntervalMs;
+ }
+ public subscribe(callback: EventWatcherCallback): void {
+ assert.isFunction('callback', callback);
+ if (!_.isUndefined(this._intervalIdIfExists)) {
+ throw new Error(ZeroExError.SubscriptionAlreadyPresent);
+ }
+ this._intervalIdIfExists = intervalUtils.setAsyncExcludingInterval(
+ this._pollForBlockchainEventsAsync.bind(this, callback), this._pollingIntervalMs,
+ );
+ }
+ public unsubscribe(): void {
+ this._lastEvents = [];
+ if (!_.isUndefined(this._intervalIdIfExists)) {
+ intervalUtils.clearAsyncExcludingInterval(this._intervalIdIfExists);
+ delete this._intervalIdIfExists;
+ }
+ }
+ private async _pollForBlockchainEventsAsync(callback: EventWatcherCallback): Promise<void> {
+ const pendingEvents = await this._getEventsAsync();
+ if (pendingEvents.length === 0) {
+ // HACK: Sometimes when node rebuilds the pending block we get back the empty result.
+ // We don't want to emit a lot of removal events and bring them back after a couple of miliseconds,
+ // that's why we just ignore those cases.
+ return;
+ }
+ const removedEvents = _.differenceBy(this._lastEvents, pendingEvents, JSON.stringify);
+ const newEvents = _.differenceBy(pendingEvents, this._lastEvents, JSON.stringify);
+ await this._emitDifferencesAsync(removedEvents, LogEventState.Removed, callback);
+ await this._emitDifferencesAsync(newEvents, LogEventState.Added, callback);
+ this._lastEvents = pendingEvents;
+ }
+ private async _getEventsAsync(): Promise<Web3.LogEntry[]> {
+ const eventFilter = {
+ fromBlock: BlockParamLiteral.Pending,
+ toBlock: BlockParamLiteral.Pending,
+ };
+ const events = await this._web3Wrapper.getLogsAsync(eventFilter);
+ return events;
+ }
+ private async _emitDifferencesAsync(
+ logs: Web3.LogEntry[], logEventState: LogEventState, callback: EventWatcherCallback,
+ ): Promise<void> {
+ for (const log of logs) {
+ const logEvent = {
+ removed: logEventState === LogEventState.Removed,
+ ...log,
+ };
+ if (!_.isUndefined(this._intervalIdIfExists)) {
+ await callback(logEvent);
+ }
+ }
+ }
+}
diff --git a/packages/0x.js/src/order_watcher/order_state_watcher.ts b/packages/0x.js/src/order_watcher/order_state_watcher.ts
new file mode 100644
index 000000000..139f13fdf
--- /dev/null
+++ b/packages/0x.js/src/order_watcher/order_state_watcher.ts
@@ -0,0 +1,232 @@
+import * as _ from 'lodash';
+import {schemas} from '0x-json-schemas';
+import {ZeroEx} from '../0x';
+import {EventWatcher} from './event_watcher';
+import {assert} from '../utils/assert';
+import {utils} from '../utils/utils';
+import {artifacts} from '../artifacts';
+import {AbiDecoder} from '../utils/abi_decoder';
+import {OrderStateUtils} from '../utils/order_state_utils';
+import {
+ LogEvent,
+ OrderState,
+ SignedOrder,
+ Web3Provider,
+ BlockParamLiteral,
+ LogWithDecodedArgs,
+ ContractEventArgs,
+ OnOrderStateChangeCallback,
+ OrderStateWatcherConfig,
+ ApprovalContractEventArgs,
+ TransferContractEventArgs,
+ LogFillContractEventArgs,
+ LogCancelContractEventArgs,
+ ExchangeEvents,
+ TokenEvents,
+ ZeroExError,
+} from '../types';
+import {Web3Wrapper} from '../web3_wrapper';
+import {TokenWrapper} from '../contract_wrappers/token_wrapper';
+import {ExchangeWrapper} from '../contract_wrappers/exchange_wrapper';
+import {OrderFilledCancelledLazyStore} from '../stores/order_filled_cancelled_lazy_store';
+import {BalanceAndProxyAllowanceLazyStore} from '../stores/balance_proxy_allowance_lazy_store';
+
+const DEFAULT_NUM_CONFIRMATIONS = 0;
+
+interface DependentOrderHashes {
+ [makerAddress: string]: {
+ [makerToken: string]: Set<string>,
+ };
+}
+
+interface OrderByOrderHash {
+ [orderHash: string]: SignedOrder;
+}
+
+/**
+ * This class includes all the functionality related to watching a set of orders
+ * for potential changes in order validity/fillability. The orderWatcher notifies
+ * the subscriber of these changes so that a final decison can be made on whether
+ * the order should be deemed invalid.
+ */
+export class OrderStateWatcher {
+ private _orderByOrderHash: OrderByOrderHash = {};
+ private _dependentOrderHashes: DependentOrderHashes = {};
+ private _callbackIfExistsAsync?: OnOrderStateChangeCallback;
+ private _eventWatcher: EventWatcher;
+ private _web3Wrapper: Web3Wrapper;
+ private _abiDecoder: AbiDecoder;
+ private _orderStateUtils: OrderStateUtils;
+ private _orderFilledCancelledLazyStore: OrderFilledCancelledLazyStore;
+ private _balanceAndProxyAllowanceLazyStore: BalanceAndProxyAllowanceLazyStore;
+ constructor(
+ web3Wrapper: Web3Wrapper, abiDecoder: AbiDecoder, token: TokenWrapper, exchange: ExchangeWrapper,
+ config?: OrderStateWatcherConfig,
+ ) {
+ this._abiDecoder = abiDecoder;
+ this._web3Wrapper = web3Wrapper;
+ const eventPollingIntervalMs = _.isUndefined(config) ? undefined : config.eventPollingIntervalMs;
+ this._eventWatcher = new EventWatcher(web3Wrapper, eventPollingIntervalMs);
+ this._balanceAndProxyAllowanceLazyStore = new BalanceAndProxyAllowanceLazyStore(token);
+ this._orderFilledCancelledLazyStore = new OrderFilledCancelledLazyStore(exchange);
+ this._orderStateUtils = new OrderStateUtils(
+ this._balanceAndProxyAllowanceLazyStore, this._orderFilledCancelledLazyStore,
+ );
+ }
+ /**
+ * Add an order to the orderStateWatcher. Before the order is added, it's
+ * signature is verified.
+ * @param signedOrder The order you wish to start watching.
+ */
+ public addOrder(signedOrder: SignedOrder): void {
+ assert.doesConformToSchema('signedOrder', signedOrder, schemas.signedOrderSchema);
+ const orderHash = ZeroEx.getOrderHashHex(signedOrder);
+ assert.isValidSignature(orderHash, signedOrder.ecSignature, signedOrder.maker);
+ this._orderByOrderHash[orderHash] = signedOrder;
+ this.addToDependentOrderHashes(signedOrder, orderHash);
+ }
+ /**
+ * Removes an order from the orderStateWatcher
+ * @param orderHash The orderHash of the order you wish to stop watching.
+ */
+ public removeOrder(orderHash: string): void {
+ assert.doesConformToSchema('orderHash', orderHash, schemas.orderHashSchema);
+ const signedOrder = this._orderByOrderHash[orderHash];
+ if (_.isUndefined(signedOrder)) {
+ return; // noop
+ }
+ delete this._orderByOrderHash[orderHash];
+ this.removeFromDependentOrderHashes(signedOrder.maker, signedOrder.makerTokenAddress, orderHash);
+ }
+ /**
+ * Starts an orderStateWatcher subscription. The callback will be called every time a watched order's
+ * backing blockchain state has changed. This is a call-to-action for the caller to re-validate the order.
+ * @param callback Receives the orderHash of the order that should be re-validated, together
+ * with all the order-relevant blockchain state needed to re-validate the order.
+ */
+ public subscribe(callback: OnOrderStateChangeCallback): void {
+ assert.isFunction('callback', callback);
+ if (!_.isUndefined(this._callbackIfExistsAsync)) {
+ throw new Error(ZeroExError.SubscriptionAlreadyPresent);
+ }
+ this._callbackIfExistsAsync = callback;
+ this._eventWatcher.subscribe(this._onEventWatcherCallbackAsync.bind(this));
+ }
+ /**
+ * Ends an orderStateWatcher subscription.
+ */
+ public unsubscribe(): void {
+ if (_.isUndefined(this._callbackIfExistsAsync)) {
+ throw new Error(ZeroExError.SubscriptionNotFound);
+ }
+ this._balanceAndProxyAllowanceLazyStore.deleteAll();
+ this._orderFilledCancelledLazyStore.deleteAll();
+ delete this._callbackIfExistsAsync;
+ this._eventWatcher.unsubscribe();
+ }
+ private async _onEventWatcherCallbackAsync(log: LogEvent): Promise<void> {
+ const maybeDecodedLog = this._abiDecoder.tryToDecodeLogOrNoop(log);
+ const isLogDecoded = !_.isUndefined((maybeDecodedLog as LogWithDecodedArgs<any>).event);
+ if (!isLogDecoded) {
+ return; // noop
+ }
+ const decodedLog = maybeDecodedLog as LogWithDecodedArgs<ContractEventArgs>;
+ let makerToken: string;
+ let makerAddress: string;
+ let orderHashesSet: Set<string>;
+ switch (decodedLog.event) {
+ case TokenEvents.Approval:
+ {
+ // Invalidate cache
+ const args = decodedLog.args as ApprovalContractEventArgs;
+ this._balanceAndProxyAllowanceLazyStore.deleteProxyAllowance(decodedLog.address, args._owner);
+ // Revalidate orders
+ makerToken = decodedLog.address;
+ makerAddress = args._owner;
+ orderHashesSet = _.get(this._dependentOrderHashes, [makerAddress, makerToken]);
+ if (!_.isUndefined(orderHashesSet)) {
+ const orderHashes = Array.from(orderHashesSet);
+ await this._emitRevalidateOrdersAsync(orderHashes);
+ }
+ break;
+ }
+ case TokenEvents.Transfer:
+ {
+ // Invalidate cache
+ const args = decodedLog.args as TransferContractEventArgs;
+ this._balanceAndProxyAllowanceLazyStore.deleteBalance(decodedLog.address, args._from);
+ this._balanceAndProxyAllowanceLazyStore.deleteBalance(decodedLog.address, args._to);
+ // Revalidate orders
+ makerToken = decodedLog.address;
+ makerAddress = args._from;
+ orderHashesSet = _.get(this._dependentOrderHashes, [makerAddress, makerToken]);
+ if (!_.isUndefined(orderHashesSet)) {
+ const orderHashes = Array.from(orderHashesSet);
+ await this._emitRevalidateOrdersAsync(orderHashes);
+ }
+ break;
+ }
+ case ExchangeEvents.LogFill:
+ {
+ // Invalidate cache
+ const args = decodedLog.args as LogFillContractEventArgs;
+ this._orderFilledCancelledLazyStore.deleteFilledTakerAmount(args.orderHash);
+ // Revalidate orders
+ const orderHash = args.orderHash;
+ const isOrderWatched = !_.isUndefined(this._orderByOrderHash[orderHash]);
+ if (isOrderWatched) {
+ await this._emitRevalidateOrdersAsync([orderHash]);
+ }
+ break;
+ }
+ case ExchangeEvents.LogCancel:
+ {
+ // Invalidate cache
+ const args = decodedLog.args as LogCancelContractEventArgs;
+ this._orderFilledCancelledLazyStore.deleteCancelledTakerAmount(args.orderHash);
+ // Revalidate orders
+ const orderHash = args.orderHash;
+ const isOrderWatched = !_.isUndefined(this._orderByOrderHash[orderHash]);
+ if (isOrderWatched) {
+ await this._emitRevalidateOrdersAsync([orderHash]);
+ }
+ break;
+ }
+ case ExchangeEvents.LogError:
+ return; // noop
+
+ default:
+ throw utils.spawnSwitchErr('decodedLog.event', decodedLog.event);
+ }
+ }
+ private async _emitRevalidateOrdersAsync(orderHashes: string[]): Promise<void> {
+ for (const orderHash of orderHashes) {
+ const signedOrder = this._orderByOrderHash[orderHash] as SignedOrder;
+ // Most of these calls will never reach the network because the data is fetched from stores
+ // and only updated when cache is invalidated
+ const orderState = await this._orderStateUtils.getOrderStateAsync(signedOrder);
+ if (_.isUndefined(this._callbackIfExistsAsync)) {
+ break; // Unsubscribe was called
+ }
+ await this._callbackIfExistsAsync(orderState);
+ }
+ }
+ private addToDependentOrderHashes(signedOrder: SignedOrder, orderHash: string) {
+ if (_.isUndefined(this._dependentOrderHashes[signedOrder.maker])) {
+ this._dependentOrderHashes[signedOrder.maker] = {};
+ }
+ if (_.isUndefined(this._dependentOrderHashes[signedOrder.maker][signedOrder.makerTokenAddress])) {
+ this._dependentOrderHashes[signedOrder.maker][signedOrder.makerTokenAddress] = new Set();
+ }
+ this._dependentOrderHashes[signedOrder.maker][signedOrder.makerTokenAddress].add(orderHash);
+ }
+ private removeFromDependentOrderHashes(makerAddress: string, makerTokenAddress: string, orderHash: string) {
+ this._dependentOrderHashes[makerAddress][makerTokenAddress].delete(orderHash);
+ if (this._dependentOrderHashes[makerAddress][makerTokenAddress].size === 0) {
+ delete this._dependentOrderHashes[makerAddress][makerTokenAddress];
+ }
+ if (_.isEmpty(this._dependentOrderHashes[makerAddress])) {
+ delete this._dependentOrderHashes[makerAddress];
+ }
+ }
+}
diff --git a/packages/0x.js/src/schemas/zero_ex_config_schema.ts b/packages/0x.js/src/schemas/zero_ex_config_schema.ts
new file mode 100644
index 000000000..6d4b3ed27
--- /dev/null
+++ b/packages/0x.js/src/schemas/zero_ex_config_schema.ts
@@ -0,0 +1,23 @@
+export const zeroExConfigSchema = {
+ id: '/ZeroExConfig',
+ properties: {
+ gasPrice: {$ref: '/Number'},
+ exchangeContractAddress: {$ref: '/Address'},
+ tokenRegistryContractAddress: {$ref: '/Address'},
+ etherTokenContractAddress: {$ref: '/Address'},
+ orderWatcherConfig: {
+ type: 'object',
+ properties: {
+ pollingIntervalMs: {
+ type: 'number',
+ minimum: 0,
+ },
+ numConfirmations: {
+ type: 'number',
+ minimum: 0,
+ },
+ },
+ },
+ },
+ type: 'object',
+};
diff --git a/packages/0x.js/src/stores/balance_proxy_allowance_lazy_store.ts b/packages/0x.js/src/stores/balance_proxy_allowance_lazy_store.ts
new file mode 100644
index 000000000..c83e61606
--- /dev/null
+++ b/packages/0x.js/src/stores/balance_proxy_allowance_lazy_store.ts
@@ -0,0 +1,82 @@
+import * as _ from 'lodash';
+import * as Web3 from 'web3';
+import {BigNumber} from 'bignumber.js';
+import {TokenWrapper} from '../contract_wrappers/token_wrapper';
+import {BlockParamLiteral} from '../types';
+
+/**
+ * Copy on read store for balances/proxyAllowances of tokens/accounts
+ */
+export class BalanceAndProxyAllowanceLazyStore {
+ private token: TokenWrapper;
+ private balance: {
+ [tokenAddress: string]: {
+ [userAddress: string]: BigNumber,
+ },
+ };
+ private proxyAllowance: {
+ [tokenAddress: string]: {
+ [userAddress: string]: BigNumber,
+ },
+ };
+ constructor(token: TokenWrapper) {
+ this.token = token;
+ this.balance = {};
+ this.proxyAllowance = {};
+ }
+ public async getBalanceAsync(tokenAddress: string, userAddress: string): Promise<BigNumber> {
+ if (_.isUndefined(this.balance[tokenAddress]) || _.isUndefined(this.balance[tokenAddress][userAddress])) {
+ const methodOpts = {
+ defaultBlock: BlockParamLiteral.Pending,
+ };
+ const balance = await this.token.getBalanceAsync(tokenAddress, userAddress, methodOpts);
+ this.setBalance(tokenAddress, userAddress, balance);
+ }
+ const cachedBalance = this.balance[tokenAddress][userAddress];
+ return cachedBalance;
+ }
+ public setBalance(tokenAddress: string, userAddress: string, balance: BigNumber): void {
+ if (_.isUndefined(this.balance[tokenAddress])) {
+ this.balance[tokenAddress] = {};
+ }
+ this.balance[tokenAddress][userAddress] = balance;
+ }
+ public deleteBalance(tokenAddress: string, userAddress: string): void {
+ if (!_.isUndefined(this.balance[tokenAddress])) {
+ delete this.balance[tokenAddress][userAddress];
+ if (_.isEmpty(this.balance[tokenAddress])) {
+ delete this.balance[tokenAddress];
+ }
+ }
+ }
+ public async getProxyAllowanceAsync(tokenAddress: string, userAddress: string): Promise<BigNumber> {
+ if (_.isUndefined(this.proxyAllowance[tokenAddress]) ||
+ _.isUndefined(this.proxyAllowance[tokenAddress][userAddress])) {
+ const methodOpts = {
+ defaultBlock: BlockParamLiteral.Pending,
+ };
+ const proxyAllowance = await this.token.getProxyAllowanceAsync(tokenAddress, userAddress, methodOpts);
+ this.setProxyAllowance(tokenAddress, userAddress, proxyAllowance);
+ }
+ const cachedProxyAllowance = this.proxyAllowance[tokenAddress][userAddress];
+ return cachedProxyAllowance;
+ }
+ public setProxyAllowance(tokenAddress: string, userAddress: string, proxyAllowance: BigNumber): void {
+ if (_.isUndefined(this.proxyAllowance[tokenAddress])) {
+ this.proxyAllowance[tokenAddress] = {};
+ }
+ this.proxyAllowance[tokenAddress][userAddress] = proxyAllowance;
+ }
+ public deleteProxyAllowance(tokenAddress: string, userAddress: string): void {
+ if (!_.isUndefined(this.proxyAllowance[tokenAddress])) {
+ delete this.proxyAllowance[tokenAddress][userAddress];
+ if (_.isEmpty(this.proxyAllowance[tokenAddress])) {
+ delete this.proxyAllowance[tokenAddress];
+ }
+ }
+ }
+ public deleteAll(): void {
+ this.balance = {};
+ this.proxyAllowance = {};
+ }
+}
diff --git a/packages/0x.js/src/stores/order_filled_cancelled_lazy_store.ts b/packages/0x.js/src/stores/order_filled_cancelled_lazy_store.ts
new file mode 100644
index 000000000..9d74da096
--- /dev/null
+++ b/packages/0x.js/src/stores/order_filled_cancelled_lazy_store.ts
@@ -0,0 +1,61 @@
+import * as _ from 'lodash';
+import * as Web3 from 'web3';
+import {BigNumber} from 'bignumber.js';
+import {ExchangeWrapper} from '../contract_wrappers/exchange_wrapper';
+import {BlockParamLiteral} from '../types';
+
+/**
+ * Copy on read store for filled/cancelled taker amounts
+ */
+export class OrderFilledCancelledLazyStore {
+ private exchange: ExchangeWrapper;
+ private filledTakerAmount: {
+ [orderHash: string]: BigNumber,
+ };
+ private cancelledTakerAmount: {
+ [orderHash: string]: BigNumber,
+ };
+ constructor(exchange: ExchangeWrapper) {
+ this.exchange = exchange;
+ this.filledTakerAmount = {};
+ this.cancelledTakerAmount = {};
+ }
+ public async getFilledTakerAmountAsync(orderHash: string): Promise<BigNumber> {
+ if (_.isUndefined(this.filledTakerAmount[orderHash])) {
+ const methodOpts = {
+ defaultBlock: BlockParamLiteral.Pending,
+ };
+ const filledTakerAmount = await this.exchange.getFilledTakerAmountAsync(orderHash, methodOpts);
+ this.setFilledTakerAmount(orderHash, filledTakerAmount);
+ }
+ const cachedFilled = this.filledTakerAmount[orderHash];
+ return cachedFilled;
+ }
+ public setFilledTakerAmount(orderHash: string, filledTakerAmount: BigNumber): void {
+ this.filledTakerAmount[orderHash] = filledTakerAmount;
+ }
+ public deleteFilledTakerAmount(orderHash: string): void {
+ delete this.filledTakerAmount[orderHash];
+ }
+ public async getCancelledTakerAmountAsync(orderHash: string): Promise<BigNumber> {
+ if (_.isUndefined(this.cancelledTakerAmount[orderHash])) {
+ const methodOpts = {
+ defaultBlock: BlockParamLiteral.Pending,
+ };
+ const cancelledTakerAmount = await this.exchange.getCanceledTakerAmountAsync(orderHash, methodOpts);
+ this.setCancelledTakerAmount(orderHash, cancelledTakerAmount);
+ }
+ const cachedCancelled = this.cancelledTakerAmount[orderHash];
+ return cachedCancelled;
+ }
+ public setCancelledTakerAmount(orderHash: string, cancelledTakerAmount: BigNumber): void {
+ this.cancelledTakerAmount[orderHash] = cancelledTakerAmount;
+ }
+ public deleteCancelledTakerAmount(orderHash: string): void {
+ delete this.cancelledTakerAmount[orderHash];
+ }
+ public deleteAll(): void {
+ this.filledTakerAmount = {};
+ this.cancelledTakerAmount = {};
+ }
+}
diff --git a/packages/0x.js/src/subproviders/empty_wallet_subprovider.ts b/packages/0x.js/src/subproviders/empty_wallet_subprovider.ts
new file mode 100644
index 000000000..2f260217c
--- /dev/null
+++ b/packages/0x.js/src/subproviders/empty_wallet_subprovider.ts
@@ -0,0 +1,24 @@
+import {JSONRPCPayload} from '../types';
+
+/*
+ * This class implements the web3-provider-engine subprovider interface and returns
+ * that the provider has no addresses when queried.
+ * Source: https://github.com/MetaMask/provider-engine/blob/master/subproviders/subprovider.js
+ */
+export class EmptyWalletSubProvider {
+ public handleRequest(payload: JSONRPCPayload, next: () => void, end: (err: Error|null, result: any) => void) {
+ switch (payload.method) {
+ case 'eth_accounts':
+ end(null, []);
+ return;
+
+ default:
+ next();
+ return;
+ }
+ }
+ // Required to implement this method despite not needing it for this subprovider
+ public setEngine(engine: any) {
+ // noop
+ }
+}
diff --git a/packages/0x.js/src/types.ts b/packages/0x.js/src/types.ts
new file mode 100644
index 000000000..11683378f
--- /dev/null
+++ b/packages/0x.js/src/types.ts
@@ -0,0 +1,525 @@
+import * as Web3 from 'web3';
+import BigNumber from 'bignumber.js';
+
+export enum ZeroExError {
+ ContractDoesNotExist = 'CONTRACT_DOES_NOT_EXIST',
+ ExchangeContractDoesNotExist = 'EXCHANGE_CONTRACT_DOES_NOT_EXIST',
+ UnhandledError = 'UNHANDLED_ERROR',
+ UserHasNoAssociatedAddress = 'USER_HAS_NO_ASSOCIATED_ADDRESSES',
+ InvalidSignature = 'INVALID_SIGNATURE',
+ ContractNotDeployedOnNetwork = 'CONTRACT_NOT_DEPLOYED_ON_NETWORK',
+ InsufficientAllowanceForTransfer = 'INSUFFICIENT_ALLOWANCE_FOR_TRANSFER',
+ InsufficientBalanceForTransfer = 'INSUFFICIENT_BALANCE_FOR_TRANSFER',
+ InsufficientEthBalanceForDeposit = 'INSUFFICIENT_ETH_BALANCE_FOR_DEPOSIT',
+ InsufficientWEthBalanceForWithdrawal = 'INSUFFICIENT_WETH_BALANCE_FOR_WITHDRAWAL',
+ InvalidJump = 'INVALID_JUMP',
+ OutOfGas = 'OUT_OF_GAS',
+ NoNetworkId = 'NO_NETWORK_ID',
+ SubscriptionNotFound = 'SUBSCRIPTION_NOT_FOUND',
+ SubscriptionAlreadyPresent = 'SUBSCRIPTION_ALREADY_PRESENT',
+ TransactionMiningTimeout = 'TRANSACTION_MINING_TIMEOUT',
+}
+
+export enum InternalZeroExError {
+ NoAbiDecoder = 'NO_ABI_DECODER',
+ ZrxNotInTokenRegistry = 'ZRX_NOT_IN_TOKEN_REGISTRY',
+}
+
+/**
+ * Elliptic Curve signature
+ */
+export interface ECSignature {
+ v: number;
+ r: string;
+ s: string;
+}
+
+export type OrderAddresses = [string, string, string, string, string];
+
+export type OrderValues = [BigNumber, BigNumber, BigNumber,
+ BigNumber, BigNumber, BigNumber];
+
+export type LogEvent = Web3.LogEntryEvent;
+export type DecodedLogEvent<ArgsType> = Web3.DecodedLogEntryEvent<ArgsType>;
+
+export type EventCallbackAsync<ArgsType> = (err: null|Error, log?: DecodedLogEvent<ArgsType>) => Promise<void>;
+export type EventCallbackSync<ArgsType> = (err: null|Error, log?: DecodedLogEvent<ArgsType>) => void;
+export type EventCallback<ArgsType> = EventCallbackSync<ArgsType>|EventCallbackAsync<ArgsType>;
+
+export type EventWatcherCallbackSync = (log: LogEvent) => void;
+export type EventWatcherCallbackAsync = (log: LogEvent) => Promise<void>;
+export type EventWatcherCallback = EventWatcherCallbackSync|EventWatcherCallbackAsync;
+
+export interface ExchangeContract extends Web3.ContractInstance {
+ isValidSignature: {
+ callAsync: (signerAddressHex: string, dataHex: string, v: number, r: string, s: string,
+ txOpts?: TxOpts) => Promise<boolean>;
+ };
+ ZRX_TOKEN_CONTRACT: {
+ callAsync: () => Promise<string>;
+ };
+ TOKEN_TRANSFER_PROXY_CONTRACT: {
+ callAsync: () => Promise<string>;
+ };
+ getUnavailableTakerTokenAmount: {
+ callAsync: (orderHash: string, defaultBlock?: Web3.BlockParam) => Promise<BigNumber>;
+ };
+ isRoundingError: {
+ callAsync: (takerTokenFillAmount: BigNumber, takerTokenAmount: BigNumber,
+ makerTokenAmount: BigNumber, txOpts?: TxOpts) => Promise<boolean>;
+ };
+ fillOrder: {
+ sendTransactionAsync: (orderAddresses: OrderAddresses, orderValues: OrderValues,
+ fillTakerTokenAmount: BigNumber,
+ shouldThrowOnInsufficientBalanceOrAllowance: boolean,
+ v: number, r: string, s: string, txOpts?: TxOpts) => Promise<string>;
+ estimateGasAsync: (orderAddresses: OrderAddresses, orderValues: OrderValues,
+ fillTakerTokenAmount: BigNumber,
+ shouldThrowOnInsufficientBalanceOrAllowance: boolean,
+ v: number, r: string, s: string, txOpts?: TxOpts) => Promise<number>;
+ };
+ batchFillOrders: {
+ sendTransactionAsync: (orderAddresses: OrderAddresses[], orderValues: OrderValues[],
+ fillTakerTokenAmounts: BigNumber[],
+ shouldThrowOnInsufficientBalanceOrAllowance: boolean,
+ v: number[], r: string[], s: string[], txOpts?: TxOpts) => Promise<string>;
+ estimateGasAsync: (orderAddresses: OrderAddresses[], orderValues: OrderValues[],
+ fillTakerTokenAmounts: BigNumber[],
+ shouldThrowOnInsufficientBalanceOrAllowance: boolean,
+ v: number[], r: string[], s: string[], txOpts?: TxOpts) => Promise<number>;
+ };
+ fillOrdersUpTo: {
+ sendTransactionAsync: (orderAddresses: OrderAddresses[], orderValues: OrderValues[],
+ fillTakerTokenAmount: BigNumber,
+ shouldThrowOnInsufficientBalanceOrAllowance: boolean,
+ v: number[], r: string[], s: string[], txOpts?: TxOpts) => Promise<string>;
+ estimateGasAsync: (orderAddresses: OrderAddresses[], orderValues: OrderValues[],
+ fillTakerTokenAmount: BigNumber,
+ shouldThrowOnInsufficientBalanceOrAllowance: boolean,
+ v: number[], r: string[], s: string[], txOpts?: TxOpts) => Promise<number>;
+ };
+ cancelOrder: {
+ sendTransactionAsync: (orderAddresses: OrderAddresses, orderValues: OrderValues,
+ cancelTakerTokenAmount: BigNumber, txOpts?: TxOpts) => Promise<string>;
+ estimateGasAsync: (orderAddresses: OrderAddresses, orderValues: OrderValues,
+ cancelTakerTokenAmount: BigNumber,
+ txOpts?: TxOpts) => Promise<number>;
+ };
+ batchCancelOrders: {
+ sendTransactionAsync: (orderAddresses: OrderAddresses[], orderValues: OrderValues[],
+ cancelTakerTokenAmounts: BigNumber[], txOpts?: TxOpts) => Promise<string>;
+ estimateGasAsync: (orderAddresses: OrderAddresses[], orderValues: OrderValues[],
+ cancelTakerTokenAmounts: BigNumber[],
+ txOpts?: TxOpts) => Promise<number>;
+ };
+ fillOrKillOrder: {
+ sendTransactionAsync: (orderAddresses: OrderAddresses, orderValues: OrderValues,
+ fillTakerTokenAmount: BigNumber,
+ v: number, r: string, s: string, txOpts?: TxOpts) => Promise<string>;
+ estimateGasAsync: (orderAddresses: OrderAddresses, orderValues: OrderValues,
+ fillTakerTokenAmount: BigNumber,
+ v: number, r: string, s: string, txOpts?: TxOpts) => Promise<number>;
+ };
+ batchFillOrKillOrders: {
+ sendTransactionAsync: (orderAddresses: OrderAddresses[], orderValues: OrderValues[],
+ fillTakerTokenAmounts: BigNumber[],
+ v: number[], r: string[], s: string[], txOpts: TxOpts) => Promise<string>;
+ estimateGasAsync: (orderAddresses: OrderAddresses[], orderValues: OrderValues[],
+ fillTakerTokenAmounts: BigNumber[],
+ v: number[], r: string[], s: string[], txOpts?: TxOpts) => Promise<number>;
+ };
+ filled: {
+ callAsync: (orderHash: string, defaultBlock?: Web3.BlockParam) => Promise<BigNumber>;
+ };
+ cancelled: {
+ callAsync: (orderHash: string, defaultBlock?: Web3.BlockParam) => Promise<BigNumber>;
+ };
+ getOrderHash: {
+ callAsync: (orderAddresses: OrderAddresses, orderValues: OrderValues) => Promise<string>;
+ };
+}
+
+export interface TokenContract extends Web3.ContractInstance {
+ balanceOf: {
+ callAsync: (address: string, defaultBlock?: Web3.BlockParam) => Promise<BigNumber>;
+ };
+ allowance: {
+ callAsync: (ownerAddress: string, allowedAddress: string,
+ defaultBlock?: Web3.BlockParam) => Promise<BigNumber>;
+ };
+ transfer: {
+ sendTransactionAsync: (toAddress: string, amountInBaseUnits: BigNumber,
+ txOpts?: TxOpts) => Promise<string>;
+ };
+ transferFrom: {
+ sendTransactionAsync: (fromAddress: string, toAddress: string, amountInBaseUnits: BigNumber,
+ txOpts?: TxOpts) => Promise<string>;
+ };
+ approve: {
+ sendTransactionAsync: (proxyAddress: string, amountInBaseUnits: BigNumber,
+ txOpts?: TxOpts) => Promise<string>;
+ };
+}
+
+export interface TokenRegistryContract extends Web3.ContractInstance {
+ getTokenMetaData: {
+ callAsync: (address: string) => Promise<TokenMetadata>;
+ };
+ getTokenAddresses: {
+ callAsync: () => Promise<string[]>;
+ };
+ getTokenAddressBySymbol: {
+ callAsync: (symbol: string) => Promise<string>;
+ };
+ getTokenAddressByName: {
+ callAsync: (name: string) => Promise<string>;
+ };
+ getTokenBySymbol: {
+ callAsync: (symbol: string) => Promise<TokenMetadata>;
+ };
+ getTokenByName: {
+ callAsync: (name: string) => Promise<TokenMetadata>;
+ };
+}
+
+export interface EtherTokenContract extends Web3.ContractInstance {
+ deposit: {
+ sendTransactionAsync: (txOpts: TxOpts) => Promise<string>;
+ };
+ withdraw: {
+ sendTransactionAsync: (amount: BigNumber, txOpts: TxOpts) => Promise<string>;
+ };
+}
+
+export interface TokenTransferProxyContract extends Web3.ContractInstance {
+ getAuthorizedAddresses: {
+ callAsync: () => Promise<string[]>;
+ };
+ authorized: {
+ callAsync: (address: string) => Promise<boolean>;
+ };
+}
+
+export enum SolidityTypes {
+ Address = 'address',
+ Uint256 = 'uint256',
+ Uint8 = 'uint8',
+ Uint = 'uint',
+}
+
+export enum ExchangeContractErrCodes {
+ ERROR_FILL_EXPIRED, // Order has already expired
+ ERROR_FILL_NO_VALUE, // Order has already been fully filled or cancelled
+ ERROR_FILL_TRUNCATION, // Rounding error too large
+ ERROR_FILL_BALANCE_ALLOWANCE, // Insufficient balance or allowance for token transfer
+ ERROR_CANCEL_EXPIRED, // Order has already expired
+ ERROR_CANCEL_NO_VALUE, // Order has already been fully filled or cancelled
+}
+
+export enum ExchangeContractErrs {
+ OrderFillExpired = 'ORDER_FILL_EXPIRED',
+ OrderCancelExpired = 'ORDER_CANCEL_EXPIRED',
+ OrderCancelAmountZero = 'ORDER_CANCEL_AMOUNT_ZERO',
+ OrderAlreadyCancelledOrFilled = 'ORDER_ALREADY_CANCELLED_OR_FILLED',
+ OrderFillAmountZero = 'ORDER_FILL_AMOUNT_ZERO',
+ OrderRemainingFillAmountZero = 'ORDER_REMAINING_FILL_AMOUNT_ZERO',
+ OrderFillRoundingError = 'ORDER_FILL_ROUNDING_ERROR',
+ FillBalanceAllowanceError = 'FILL_BALANCE_ALLOWANCE_ERROR',
+ InsufficientTakerBalance = 'INSUFFICIENT_TAKER_BALANCE',
+ InsufficientTakerAllowance = 'INSUFFICIENT_TAKER_ALLOWANCE',
+ InsufficientMakerBalance = 'INSUFFICIENT_MAKER_BALANCE',
+ InsufficientMakerAllowance = 'INSUFFICIENT_MAKER_ALLOWANCE',
+ InsufficientTakerFeeBalance = 'INSUFFICIENT_TAKER_FEE_BALANCE',
+ InsufficientTakerFeeAllowance = 'INSUFFICIENT_TAKER_FEE_ALLOWANCE',
+ InsufficientMakerFeeBalance = 'INSUFFICIENT_MAKER_FEE_BALANCE',
+ InsufficientMakerFeeAllowance = 'INSUFFICIENT_MAKER_FEE_ALLOWANCE',
+ TransactionSenderIsNotFillOrderTaker = 'TRANSACTION_SENDER_IS_NOT_FILL_ORDER_TAKER',
+ MultipleMakersInSingleCancelBatchDisallowed = 'MULTIPLE_MAKERS_IN_SINGLE_CANCEL_BATCH_DISALLOWED',
+ InsufficientRemainingFillAmount = 'INSUFFICIENT_REMAINING_FILL_AMOUNT',
+ MultipleTakerTokensInFillUpToDisallowed = 'MULTIPLE_TAKER_TOKENS_IN_FILL_UP_TO_DISALLOWED',
+ BatchOrdersMustHaveSameExchangeAddress = 'BATCH_ORDERS_MUST_HAVE_SAME_EXCHANGE_ADDRESS',
+ BatchOrdersMustHaveAtLeastOneItem = 'BATCH_ORDERS_MUST_HAVE_AT_LEAST_ONE_ITEM',
+}
+
+export type RawLog = Web3.LogEntry;
+
+export interface ContractEvent {
+ logIndex: number;
+ transactionIndex: number;
+ transactionHash: string;
+ blockHash: string;
+ blockNumber: number;
+ address: string;
+ type: string;
+ event: string;
+ args: ContractEventArgs;
+}
+
+export interface LogFillContractEventArgs {
+ maker: string;
+ taker: string;
+ feeRecipient: string;
+ makerToken: string;
+ takerToken: string;
+ filledMakerTokenAmount: BigNumber;
+ filledTakerTokenAmount: BigNumber;
+ paidMakerFee: BigNumber;
+ paidTakerFee: BigNumber;
+ tokens: string;
+ orderHash: string;
+}
+export interface LogCancelContractEventArgs {
+ maker: string;
+ feeRecipient: string;
+ makerToken: string;
+ takerToken: string;
+ cancelledMakerTokenAmount: BigNumber;
+ cancelledTakerTokenAmount: BigNumber;
+ tokens: string;
+ orderHash: string;
+}
+export interface LogErrorContractEventArgs {
+ errorId: BigNumber;
+ orderHash: string;
+}
+export type ExchangeContractEventArgs = LogFillContractEventArgs|LogCancelContractEventArgs|LogErrorContractEventArgs;
+export interface TransferContractEventArgs {
+ _from: string;
+ _to: string;
+ _value: BigNumber;
+}
+export interface ApprovalContractEventArgs {
+ _owner: string;
+ _spender: string;
+ _value: BigNumber;
+}
+export type TokenContractEventArgs = TransferContractEventArgs|ApprovalContractEventArgs;
+export type ContractEventArgs = ExchangeContractEventArgs|TokenContractEventArgs;
+export type ContractEventArg = string|BigNumber;
+
+export interface Order {
+ maker: string;
+ taker: string;
+ makerFee: BigNumber;
+ takerFee: BigNumber;
+ makerTokenAmount: BigNumber;
+ takerTokenAmount: BigNumber;
+ makerTokenAddress: string;
+ takerTokenAddress: string;
+ salt: BigNumber;
+ exchangeContractAddress: string;
+ feeRecipient: string;
+ expirationUnixTimestampSec: BigNumber;
+}
+
+export interface SignedOrder extends Order {
+ ecSignature: ECSignature;
+}
+
+// [address, name, symbol, decimals, ipfsHash, swarmHash]
+export type TokenMetadata = [string, string, string, BigNumber, string, string];
+
+export interface Token {
+ name: string;
+ address: string;
+ symbol: string;
+ decimals: number;
+}
+
+export interface TxOpts {
+ from: string;
+ gas?: number;
+ value?: BigNumber;
+}
+
+export interface TokenAddressBySymbol {
+ [symbol: string]: string;
+}
+
+export enum ExchangeEvents {
+ LogFill = 'LogFill',
+ LogCancel = 'LogCancel',
+ LogError = 'LogError',
+}
+
+export enum TokenEvents {
+ Transfer = 'Transfer',
+ Approval = 'Approval',
+}
+
+export type ContractEvents = TokenEvents|ExchangeEvents;
+
+export interface IndexedFilterValues {
+ [index: string]: ContractEventArg;
+}
+
+export enum BlockParamLiteral {
+ Latest = 'latest',
+ Earliest = 'earliest',
+ Pending = 'pending',
+}
+
+export type BlockParam = BlockParamLiteral|number;
+
+export interface SubscriptionOpts {
+ fromBlock: BlockParam;
+ toBlock: BlockParam;
+}
+
+export type DoneCallback = (err?: Error) => void;
+
+export interface OrderCancellationRequest {
+ order: Order|SignedOrder;
+ takerTokenCancelAmount: BigNumber;
+}
+
+export interface OrderFillRequest {
+ signedOrder: SignedOrder;
+ takerTokenFillAmount: BigNumber;
+}
+
+export type AsyncMethod = (...args: any[]) => Promise<any>;
+
+/**
+ * We re-export the `Web3.Provider` type specified in the Web3 Typescript typings
+ * since it is the type of the `provider` argument to the `ZeroEx` constructor.
+ * It is however a `Web3` library type, not a native `0x.js` type.
+ */
+export type Web3Provider = Web3.Provider;
+
+export interface ExchangeContractByAddress {
+ [address: string]: ExchangeContract;
+}
+
+export interface JSONRPCPayload {
+ params: any[];
+ method: string;
+}
+
+/*
+ * eventPollingIntervalMs: How often to poll the Ethereum node for new events
+ */
+export interface OrderStateWatcherConfig {
+ eventPollingIntervalMs?: number;
+}
+
+/*
+ * gasPrice: Gas price to use with every transaction
+ * exchangeContractAddress: The address of an exchange contract to use
+ * tokenRegistryContractAddress: The address of a token registry contract to use
+ * etherTokenContractAddress: The address of an ether token contract to use
+ * orderWatcherConfig: All the configs related to the orderWatcher
+ */
+export interface ZeroExConfig {
+ gasPrice?: BigNumber; // Gas price to use with every transaction
+ exchangeContractAddress?: string;
+ tokenRegistryContractAddress?: string;
+ etherTokenContractAddress?: string;
+ orderWatcherConfig?: OrderStateWatcherConfig;
+}
+
+export enum AbiType {
+ Function = 'function',
+ Constructor = 'constructor',
+ Event = 'event',
+ Fallback = 'fallback',
+}
+
+export interface DecodedLogArgs {
+ [argName: string]: ContractEventArg;
+}
+
+export interface LogWithDecodedArgs<ArgsType> extends Web3.DecodedLogEntry<ArgsType> {}
+
+export interface TransactionReceiptWithDecodedLogs extends TransactionReceipt {
+ logs: Array<LogWithDecodedArgs<DecodedLogArgs>|Web3.LogEntry>;
+}
+
+export interface Artifact {
+ abi: any;
+ networks: {[networkId: number]: {
+ address: string;
+ }};
+}
+
+/*
+ * expectedFillTakerTokenAmount: If specified, the validation method will ensure that the
+ * supplied order maker has a sufficient allowance/balance to fill this amount of the order's
+ * takerTokenAmount. If not specified, the validation method ensures that the maker has a sufficient
+ * allowance/balance to fill the entire remaining order amount.
+ */
+export interface ValidateOrderFillableOpts {
+ expectedFillTakerTokenAmount?: BigNumber;
+}
+
+/*
+ * defaultBlock: The block up to which to query the blockchain state. Setting this to a historical block number
+ * let's the user query the blockchain's state at an arbitrary point in time. In order for this to work, the
+ * backing Ethereum node must keep the entire historical state of the chain (e.g setting `--pruning=archive`
+ * flag when running Parity).
+ */
+export interface MethodOpts {
+ defaultBlock?: Web3.BlockParam;
+}
+
+/*
+ * shouldValidate: Flag indicating whether the library should make attempts to validate a transaction before
+ * broadcasting it. For example, order has a valid signature, maker has sufficient funds, etc.
+ */
+export interface OrderTransactionOpts {
+ shouldValidate: boolean;
+}
+
+export type FilterObject = Web3.FilterObject;
+
+export enum TradeSide {
+ Maker = 'maker',
+ Taker = 'taker',
+}
+
+export enum TransferType {
+ Trade = 'trade',
+ Fee = 'fee',
+}
+
+export interface OrderRelevantState {
+ makerBalance: BigNumber;
+ makerProxyAllowance: BigNumber;
+ makerFeeBalance: BigNumber;
+ makerFeeProxyAllowance: BigNumber;
+ filledTakerTokenAmount: BigNumber;
+ canceledTakerTokenAmount: BigNumber;
+ remainingFillableMakerTokenAmount: BigNumber;
+}
+
+export interface OrderStateValid {
+ isValid: true;
+ orderHash: string;
+ orderRelevantState: OrderRelevantState;
+}
+
+export interface OrderStateInvalid {
+ isValid: false;
+ orderHash: string;
+ error: ExchangeContractErrs;
+}
+
+export type OrderState = OrderStateValid|OrderStateInvalid;
+
+export type OnOrderStateChangeCallbackSync = (orderState: OrderState) => void;
+export type OnOrderStateChangeCallbackAsync = (orderState: OrderState) => Promise<void>;
+export type OnOrderStateChangeCallback = OnOrderStateChangeCallbackAsync|OnOrderStateChangeCallbackSync;
+
+export interface TransactionReceipt {
+ blockHash: string;
+ blockNumber: number;
+ transactionHash: string;
+ transactionIndex: number;
+ from: string;
+ to: string;
+ status: null|0|1;
+ cumulativeGasUsed: number;
+ gasUsed: number;
+ contractAddress: string|null;
+ logs: Web3.LogEntry[];
+}
diff --git a/packages/0x.js/src/utils/abi_decoder.ts b/packages/0x.js/src/utils/abi_decoder.ts
new file mode 100644
index 000000000..840ad9be0
--- /dev/null
+++ b/packages/0x.js/src/utils/abi_decoder.ts
@@ -0,0 +1,68 @@
+import * as Web3 from 'web3';
+import * as _ from 'lodash';
+import BigNumber from 'bignumber.js';
+import {AbiType, DecodedLogArgs, LogWithDecodedArgs, RawLog, SolidityTypes, ContractEventArgs} from '../types';
+import * as SolidityCoder from 'web3/lib/solidity/coder';
+
+export class AbiDecoder {
+ private savedABIs: Web3.AbiDefinition[] = [];
+ private methodIds: {[signatureHash: string]: Web3.EventAbi} = {};
+ constructor(abiArrays: Web3.AbiDefinition[][]) {
+ _.map(abiArrays, this.addABI.bind(this));
+ }
+ // This method can only decode logs from the 0x & ERC20 smart contracts
+ public tryToDecodeLogOrNoop<ArgsType extends ContractEventArgs>(
+ log: Web3.LogEntry): LogWithDecodedArgs<ArgsType>|RawLog {
+ const methodId = log.topics[0];
+ const event = this.methodIds[methodId];
+ if (_.isUndefined(event)) {
+ return log;
+ }
+ const logData = log.data;
+ const decodedParams: DecodedLogArgs = {};
+ let dataIndex = 0;
+ let topicsIndex = 1;
+
+ const nonIndexedInputs = _.filter(event.inputs, input => !input.indexed);
+ const dataTypes = _.map(nonIndexedInputs, input => input.type);
+ const decodedData = SolidityCoder.decodeParams(dataTypes, logData.slice('0x'.length));
+
+ _.map(event.inputs, (param: Web3.EventParameter) => {
+ // Indexed parameters are stored in topics. Non-indexed ones in decodedData
+ let value = param.indexed ? log.topics[topicsIndex++] : decodedData[dataIndex++];
+ if (param.type === SolidityTypes.Address) {
+ value = this.padZeros(new BigNumber(value).toString(16));
+ } else if (param.type === SolidityTypes.Uint256 ||
+ param.type === SolidityTypes.Uint8 ||
+ param.type === SolidityTypes.Uint ) {
+ value = new BigNumber(value);
+ }
+ decodedParams[param.name] = value;
+ });
+
+ return {
+ ...log,
+ event: event.name,
+ args: decodedParams,
+ };
+ }
+ private addABI(abiArray: Web3.AbiDefinition[]): void {
+ _.map(abiArray, (abi: Web3.AbiDefinition) => {
+ if (abi.type === AbiType.Event) {
+ const signature = `${abi.name}(${_.map(abi.inputs, input => input.type).join(',')})`;
+ const signatureHash = new Web3().sha3(signature);
+ this.methodIds[signatureHash] = abi;
+ }
+ });
+ this.savedABIs = this.savedABIs.concat(abiArray);
+ }
+ private padZeros(address: string) {
+ let formatted = address;
+ if (_.startsWith(formatted, '0x')) {
+ formatted = formatted.slice(2);
+ }
+
+ formatted = _.padStart(formatted, 40, '0');
+ return `0x${formatted}`;
+ }
+}
diff --git a/packages/0x.js/src/utils/assert.ts b/packages/0x.js/src/utils/assert.ts
new file mode 100644
index 000000000..e5c9439f3
--- /dev/null
+++ b/packages/0x.js/src/utils/assert.ts
@@ -0,0 +1,101 @@
+import * as _ from 'lodash';
+import * as Web3 from 'web3';
+import BigNumber from 'bignumber.js';
+import {SchemaValidator, Schema} from '0x-json-schemas';
+import {Web3Wrapper} from '../web3_wrapper';
+import {signatureUtils} from '../utils/signature_utils';
+import {ECSignature} from '../types';
+
+const HEX_REGEX = /^0x[0-9A-F]*$/i;
+
+export const assert = {
+ isBigNumber(variableName: string, value: BigNumber): void {
+ const isBigNumber = _.isObject(value) && (value as any).isBigNumber;
+ this.assert(isBigNumber, this.typeAssertionMessage(variableName, 'BigNumber', value));
+ },
+ isValidBaseUnitAmount(variableName: string, value: BigNumber) {
+ assert.isBigNumber(variableName, value);
+ const hasDecimals = value.decimalPlaces() !== 0;
+ this.assert(
+ !hasDecimals, `${variableName} should be in baseUnits (no decimals), found value: ${value.toNumber()}`,
+ );
+ },
+ isValidSignature(orderHash: string, ecSignature: ECSignature, signerAddress: string) {
+ const isValidSignature = signatureUtils.isValidSignature(orderHash, ecSignature, signerAddress);
+ this.assert(isValidSignature, `Expected order with hash '${orderHash}' to have a valid signature`);
+ },
+ isUndefined(value: any, variableName?: string): void {
+ this.assert(_.isUndefined(value), this.typeAssertionMessage(variableName, 'undefined', value));
+ },
+ isString(variableName: string, value: string): void {
+ this.assert(_.isString(value), this.typeAssertionMessage(variableName, 'string', value));
+ },
+ isFunction(variableName: string, value: any): void {
+ this.assert(_.isFunction(value), this.typeAssertionMessage(variableName, 'function', value));
+ },
+ isHexString(variableName: string, value: string): void {
+ this.assert(_.isString(value) && HEX_REGEX.test(value),
+ this.typeAssertionMessage(variableName, 'HexString', value));
+ },
+ isETHAddressHex(variableName: string, value: string): void {
+ const web3 = new Web3();
+ this.assert(web3.isAddress(value), this.typeAssertionMessage(variableName, 'ETHAddressHex', value));
+ this.assert(
+ web3.isAddress(value) && value.toLowerCase() === value,
+ `Checksummed addresses are not supported. Convert ${variableName} to lower case before passing`,
+ );
+ },
+ doesBelongToStringEnum(variableName: string, value: string,
+ stringEnum: any /* There is no base type for every string enum */): void {
+ const doesBelongToStringEnum = !_.isUndefined(stringEnum[value]);
+ const enumValues = _.keys(stringEnum);
+ const enumValuesAsStrings = _.map(enumValues, enumValue => `'${enumValue}'`);
+ const enumValuesAsString = enumValuesAsStrings.join(', ');
+ assert.assert(
+ doesBelongToStringEnum,
+ `Expected ${variableName} to be one of: ${enumValuesAsString}, encountered: ${value}`,
+ );
+ },
+ async isSenderAddressAsync(variableName: string, senderAddressHex: string,
+ web3Wrapper: Web3Wrapper): Promise<void> {
+ assert.isETHAddressHex(variableName, senderAddressHex);
+ const isSenderAddressAvailable = await web3Wrapper.isSenderAddressAvailableAsync(senderAddressHex);
+ assert.assert(isSenderAddressAvailable,
+ `Specified ${variableName} ${senderAddressHex} isn't available through the supplied web3 provider`,
+ );
+ },
+ async isUserAddressAvailableAsync(web3Wrapper: Web3Wrapper): Promise<void> {
+ const availableAddresses = await web3Wrapper.getAvailableAddressesAsync();
+ this.assert(!_.isEmpty(availableAddresses), 'No addresses were available on the provided web3 provider');
+ },
+ hasAtMostOneUniqueValue(value: any[], errMsg: string): void {
+ this.assert(_.uniq(value).length <= 1, errMsg);
+ },
+ isNumber(variableName: string, value: number): void {
+ this.assert(_.isFinite(value), this.typeAssertionMessage(variableName, 'number', value));
+ },
+ isBoolean(variableName: string, value: boolean): void {
+ this.assert(_.isBoolean(value), this.typeAssertionMessage(variableName, 'boolean', value));
+ },
+ isWeb3Provider(variableName: string, value: Web3.Provider): void {
+ const isWeb3Provider = _.isFunction((value as any).send) || _.isFunction((value as any).sendAsync);
+ this.assert(isWeb3Provider, this.typeAssertionMessage(variableName, 'Web3.Provider', value));
+ },
+ doesConformToSchema(variableName: string, value: any, schema: Schema): void {
+ const schemaValidator = new SchemaValidator();
+ const validationResult = schemaValidator.validate(value, schema);
+ const hasValidationErrors = validationResult.errors.length > 0;
+ const msg = `Expected ${variableName} to conform to schema ${schema.id}
+Encountered: ${JSON.stringify(value, null, '\t')}
+Validation errors: ${validationResult.errors.join(', ')}`;
+ this.assert(!hasValidationErrors, msg);
+ },
+ assert(condition: boolean, message: string): void {
+ if (!condition) {
+ throw new Error(message);
+ }
+ },
+ typeAssertionMessage(variableName: string, type: string, value: any): string {
+ return `Expected ${variableName} to be of type ${type}, encountered: ${value}`;
+ },
+};
diff --git a/packages/0x.js/src/utils/constants.ts b/packages/0x.js/src/utils/constants.ts
new file mode 100644
index 000000000..3de3f5bc1
--- /dev/null
+++ b/packages/0x.js/src/utils/constants.ts
@@ -0,0 +1,11 @@
+import BigNumber from 'bignumber.js';
+
+export const constants = {
+ NULL_ADDRESS: '0x0000000000000000000000000000000000000000',
+ TESTRPC_NETWORK_ID: 50,
+ MAX_DIGITS_IN_UNSIGNED_256_INT: 78,
+ INVALID_JUMP_PATTERN: 'invalid JUMP at',
+ OUT_OF_GAS_PATTERN: 'out of gas',
+ UNLIMITED_ALLOWANCE_IN_BASE_UNITS: new BigNumber(2).pow(256).minus(1),
+ DEFAULT_BLOCK_POLLING_INTERVAL: 1000,
+};
diff --git a/packages/0x.js/src/utils/decorators.ts b/packages/0x.js/src/utils/decorators.ts
new file mode 100644
index 000000000..ec750b891
--- /dev/null
+++ b/packages/0x.js/src/utils/decorators.ts
@@ -0,0 +1,35 @@
+import * as _ from 'lodash';
+import {constants} from './constants';
+import {AsyncMethod, ZeroExError} from '../types';
+
+export const decorators = {
+ /**
+ * Source: https://stackoverflow.com/a/29837695/3546986
+ */
+ contractCallErrorHandler(target: object,
+ key: string|symbol,
+ descriptor: TypedPropertyDescriptor<AsyncMethod>,
+ ): TypedPropertyDescriptor<AsyncMethod> {
+ const originalMethod = (descriptor.value as AsyncMethod);
+
+ // Do not use arrow syntax here. Use a function expression in
+ // order to use the correct value of `this` in this method
+ // tslint:disable-next-line:only-arrow-functions
+ descriptor.value = async function(...args: any[]) {
+ try {
+ const result = await originalMethod.apply(this, args);
+ return result;
+ } catch (error) {
+ if (_.includes(error.message, constants.INVALID_JUMP_PATTERN)) {
+ throw new Error(ZeroExError.InvalidJump);
+ }
+ if (_.includes(error.message, constants.OUT_OF_GAS_PATTERN)) {
+ throw new Error(ZeroExError.OutOfGas);
+ }
+ throw error;
+ }
+ };
+
+ return descriptor;
+ },
+};
diff --git a/packages/0x.js/src/utils/exchange_transfer_simulator.ts b/packages/0x.js/src/utils/exchange_transfer_simulator.ts
new file mode 100644
index 000000000..308ef06db
--- /dev/null
+++ b/packages/0x.js/src/utils/exchange_transfer_simulator.ts
@@ -0,0 +1,88 @@
+import * as _ from 'lodash';
+import BigNumber from 'bignumber.js';
+import {ExchangeContractErrs, TradeSide, TransferType, BlockParamLiteral} from '../types';
+import {TokenWrapper} from '../contract_wrappers/token_wrapper';
+import {BalanceAndProxyAllowanceLazyStore} from '../stores/balance_proxy_allowance_lazy_store';
+
+enum FailureReason {
+ Balance = 'balance',
+ ProxyAllowance = 'proxyAllowance',
+}
+
+const ERR_MSG_MAPPING = {
+ [FailureReason.Balance]: {
+ [TradeSide.Maker]: {
+ [TransferType.Trade]: ExchangeContractErrs.InsufficientMakerBalance,
+ [TransferType.Fee]: ExchangeContractErrs.InsufficientMakerFeeBalance,
+ },
+ [TradeSide.Taker]: {
+ [TransferType.Trade]: ExchangeContractErrs.InsufficientTakerBalance,
+ [TransferType.Fee]: ExchangeContractErrs.InsufficientTakerFeeBalance,
+ },
+ },
+ [FailureReason.ProxyAllowance]: {
+ [TradeSide.Maker]: {
+ [TransferType.Trade]: ExchangeContractErrs.InsufficientMakerAllowance,
+ [TransferType.Fee]: ExchangeContractErrs.InsufficientMakerFeeAllowance,
+ },
+ [TradeSide.Taker]: {
+ [TransferType.Trade]: ExchangeContractErrs.InsufficientTakerAllowance,
+ [TransferType.Fee]: ExchangeContractErrs.InsufficientTakerFeeAllowance,
+ },
+ },
+};
+
+export class ExchangeTransferSimulator {
+ private store: BalanceAndProxyAllowanceLazyStore;
+ private UNLIMITED_ALLOWANCE_IN_BASE_UNITS: BigNumber;
+ constructor(token: TokenWrapper) {
+ this.store = new BalanceAndProxyAllowanceLazyStore(token);
+ this.UNLIMITED_ALLOWANCE_IN_BASE_UNITS = token.UNLIMITED_ALLOWANCE_IN_BASE_UNITS;
+ }
+ /**
+ * Simulates transferFrom call performed by a proxy
+ * @param tokenAddress Address of the token to be transferred
+ * @param from Owner of the transferred tokens
+ * @param to Recipient of the transferred tokens
+ * @param amountInBaseUnits The amount of tokens being transferred
+ * @param tradeSide Is Maker/Taker transferring
+ * @param transferType Is it a fee payment or a value transfer
+ */
+ public async transferFromAsync(tokenAddress: string, from: string, to: string,
+ amountInBaseUnits: BigNumber, tradeSide: TradeSide,
+ transferType: TransferType): Promise<void> {
+ const balance = await this.store.getBalanceAsync(tokenAddress, from);
+ const proxyAllowance = await this.store.getProxyAllowanceAsync(tokenAddress, from);
+ if (proxyAllowance.lessThan(amountInBaseUnits)) {
+ this.throwValidationError(FailureReason.ProxyAllowance, tradeSide, transferType);
+ }
+ if (balance.lessThan(amountInBaseUnits)) {
+ this.throwValidationError(FailureReason.Balance, tradeSide, transferType);
+ }
+ await this.decreaseProxyAllowanceAsync(tokenAddress, from, amountInBaseUnits);
+ await this.decreaseBalanceAsync(tokenAddress, from, amountInBaseUnits);
+ await this.increaseBalanceAsync(tokenAddress, to, amountInBaseUnits);
+ }
+ private async decreaseProxyAllowanceAsync(tokenAddress: string, userAddress: string,
+ amountInBaseUnits: BigNumber): Promise<void> {
+ const proxyAllowance = await this.store.getProxyAllowanceAsync(tokenAddress, userAddress);
+ if (!proxyAllowance.eq(this.UNLIMITED_ALLOWANCE_IN_BASE_UNITS)) {
+ this.store.setProxyAllowance(tokenAddress, userAddress, proxyAllowance.minus(amountInBaseUnits));
+ }
+ }
+ private async increaseBalanceAsync(tokenAddress: string, userAddress: string,
+ amountInBaseUnits: BigNumber): Promise<void> {
+ const balance = await this.store.getBalanceAsync(tokenAddress, userAddress);
+ this.store.setBalance(tokenAddress, userAddress, balance.plus(amountInBaseUnits));
+ }
+ private async decreaseBalanceAsync(tokenAddress: string, userAddress: string,
+ amountInBaseUnits: BigNumber): Promise<void> {
+ const balance = await this.store.getBalanceAsync(tokenAddress, userAddress);
+ this.store.setBalance(tokenAddress, userAddress, balance.minus(amountInBaseUnits));
+ }
+ private throwValidationError(failureReason: FailureReason, tradeSide: TradeSide,
+ transferType: TransferType): Promise<never> {
+ const errMsg = ERR_MSG_MAPPING[failureReason][tradeSide][transferType];
+ throw new Error(errMsg);
+ }
+}
diff --git a/packages/0x.js/src/utils/filter_utils.ts b/packages/0x.js/src/utils/filter_utils.ts
new file mode 100644
index 000000000..e09a95a6e
--- /dev/null
+++ b/packages/0x.js/src/utils/filter_utils.ts
@@ -0,0 +1,82 @@
+import * as _ from 'lodash';
+import * as Web3 from 'web3';
+import * as uuid from 'uuid/v4';
+import * as ethUtil from 'ethereumjs-util';
+import * as jsSHA3 from 'js-sha3';
+import {ContractEvents, IndexedFilterValues, SubscriptionOpts} from '../types';
+
+const TOPIC_LENGTH = 32;
+
+export const filterUtils = {
+ generateUUID(): string {
+ return uuid();
+ },
+ getFilter(address: string, eventName: ContractEvents,
+ indexFilterValues: IndexedFilterValues, abi: Web3.ContractAbi,
+ subscriptionOpts?: SubscriptionOpts): Web3.FilterObject {
+ const eventAbi = _.find(abi, {name: eventName}) as Web3.EventAbi;
+ const eventSignature = filterUtils.getEventSignatureFromAbiByName(eventAbi, eventName);
+ const topicForEventSignature = ethUtil.addHexPrefix(jsSHA3.keccak256(eventSignature));
+ const topicsForIndexedArgs = filterUtils.getTopicsForIndexedArgs(eventAbi, indexFilterValues);
+ const topics = [topicForEventSignature, ...topicsForIndexedArgs];
+ let filter: Web3.FilterObject = {
+ address,
+ topics,
+ };
+ if (!_.isUndefined(subscriptionOpts)) {
+ filter = {
+ ...subscriptionOpts,
+ ...filter,
+ };
+ }
+ return filter;
+ },
+ getEventSignatureFromAbiByName(eventAbi: Web3.EventAbi, eventName: ContractEvents): string {
+ const types = _.map(eventAbi.inputs, 'type');
+ const signature = `${eventAbi.name}(${types.join(',')})`;
+ return signature;
+ },
+ getTopicsForIndexedArgs(abi: Web3.EventAbi, indexFilterValues: IndexedFilterValues): Array<string|null> {
+ const topics: Array<string|null> = [];
+ for (const eventInput of abi.inputs) {
+ if (!eventInput.indexed) {
+ continue;
+ }
+ if (_.isUndefined(indexFilterValues[eventInput.name])) {
+ // Null is a wildcard topic in a JSON-RPC call
+ topics.push(null);
+ } else {
+ const value = indexFilterValues[eventInput.name] as string;
+ const buffer = ethUtil.toBuffer(value);
+ const paddedBuffer = ethUtil.setLengthLeft(buffer, TOPIC_LENGTH);
+ const topic = ethUtil.bufferToHex(paddedBuffer);
+ topics.push(topic);
+ }
+ }
+ return topics;
+ },
+ matchesFilter(log: Web3.LogEntry, filter: Web3.FilterObject): boolean {
+ if (!_.isUndefined(filter.address) && log.address !== filter.address) {
+ return false;
+ }
+ if (!_.isUndefined(filter.topics)) {
+ return filterUtils.matchesTopics(log.topics, filter.topics);
+ }
+ return true;
+ },
+ matchesTopics(logTopics: string[], filterTopics: Array<string[]|string|null>): boolean {
+ const matchesTopic = _.zipWith(logTopics, filterTopics, filterUtils.matchesTopic.bind(filterUtils));
+ const matchesTopics = _.every(matchesTopic);
+ return matchesTopics;
+ },
+ matchesTopic(logTopic: string, filterTopic: string[]|string|null): boolean {
+ if (_.isArray(filterTopic)) {
+ return _.includes(filterTopic, logTopic);
+ }
+ if (_.isString(filterTopic)) {
+ return filterTopic === logTopic;
+ }
+ // null topic is a wildcard
+ return true;
+ },
+};
diff --git a/packages/0x.js/src/utils/interval_utils.ts b/packages/0x.js/src/utils/interval_utils.ts
new file mode 100644
index 000000000..62b79f2f5
--- /dev/null
+++ b/packages/0x.js/src/utils/interval_utils.ts
@@ -0,0 +1,20 @@
+import * as _ from 'lodash';
+
+export const intervalUtils = {
+ setAsyncExcludingInterval(fn: () => Promise<void>, intervalMs: number) {
+ let locked = false;
+ const intervalId = setInterval(async () => {
+ if (locked) {
+ return;
+ } else {
+ locked = true;
+ await fn();
+ locked = false;
+ }
+ }, intervalMs);
+ return intervalId;
+ },
+ clearAsyncExcludingInterval(intervalId: NodeJS.Timer): void {
+ clearInterval(intervalId);
+ },
+};
diff --git a/packages/0x.js/src/utils/order_state_utils.ts b/packages/0x.js/src/utils/order_state_utils.ts
new file mode 100644
index 000000000..f82601cae
--- /dev/null
+++ b/packages/0x.js/src/utils/order_state_utils.ts
@@ -0,0 +1,119 @@
+import * as _ from 'lodash';
+import * as Web3 from 'web3';
+import BigNumber from 'bignumber.js';
+import {
+ ExchangeContractErrs,
+ SignedOrder,
+ OrderRelevantState,
+ MethodOpts,
+ OrderState,
+ OrderStateValid,
+ OrderStateInvalid,
+} from '../types';
+import {ZeroEx} from '../0x';
+import {TokenWrapper} from '../contract_wrappers/token_wrapper';
+import {ExchangeWrapper} from '../contract_wrappers/exchange_wrapper';
+import {utils} from '../utils/utils';
+import {constants} from '../utils/constants';
+import {OrderFilledCancelledLazyStore} from '../stores/order_filled_cancelled_lazy_store';
+import {BalanceAndProxyAllowanceLazyStore} from '../stores/balance_proxy_allowance_lazy_store';
+
+export class OrderStateUtils {
+ private balanceAndProxyAllowanceLazyStore: BalanceAndProxyAllowanceLazyStore;
+ private orderFilledCancelledLazyStore: OrderFilledCancelledLazyStore;
+ constructor(balanceAndProxyAllowanceLazyStore: BalanceAndProxyAllowanceLazyStore,
+ orderFilledCancelledLazyStore: OrderFilledCancelledLazyStore) {
+ this.balanceAndProxyAllowanceLazyStore = balanceAndProxyAllowanceLazyStore;
+ this.orderFilledCancelledLazyStore = orderFilledCancelledLazyStore;
+ }
+ public async getOrderStateAsync(signedOrder: SignedOrder): Promise<OrderState> {
+ const orderRelevantState = await this.getOrderRelevantStateAsync(signedOrder);
+ const orderHash = ZeroEx.getOrderHashHex(signedOrder);
+ try {
+ this.validateIfOrderIsValid(signedOrder, orderRelevantState);
+ const orderState: OrderStateValid = {
+ isValid: true,
+ orderHash,
+ orderRelevantState,
+ };
+ return orderState;
+ } catch (err) {
+ const orderState: OrderStateInvalid = {
+ isValid: false,
+ orderHash,
+ error: err.message,
+ };
+ return orderState;
+ }
+ }
+ public async getOrderRelevantStateAsync(signedOrder: SignedOrder): Promise<OrderRelevantState> {
+ // HACK: We access the private property here but otherwise the interface will be less nice.
+ // If we pass it from the instantiator - there is no opportunity to get it there
+ // because JS doesn't support async constructors.
+ // Moreover - it's cached under the hood so it's equivalent to an async constructor.
+ const exchange = (this.orderFilledCancelledLazyStore as any).exchange as ExchangeWrapper;
+ const zrxTokenAddress = await exchange.getZRXTokenAddressAsync();
+ const orderHash = ZeroEx.getOrderHashHex(signedOrder);
+ const makerBalance = await this.balanceAndProxyAllowanceLazyStore.getBalanceAsync(
+ signedOrder.makerTokenAddress, signedOrder.maker,
+ );
+ const makerProxyAllowance = await this.balanceAndProxyAllowanceLazyStore.getProxyAllowanceAsync(
+ signedOrder.makerTokenAddress, signedOrder.maker,
+ );
+ const makerFeeBalance = await this.balanceAndProxyAllowanceLazyStore.getBalanceAsync(
+ zrxTokenAddress, signedOrder.maker,
+ );
+ const makerFeeProxyAllowance = await this.balanceAndProxyAllowanceLazyStore.getProxyAllowanceAsync(
+ zrxTokenAddress, signedOrder.maker,
+ );
+ const filledTakerTokenAmount = await this.orderFilledCancelledLazyStore.getFilledTakerAmountAsync(orderHash);
+ const canceledTakerTokenAmount = await this.orderFilledCancelledLazyStore.getCancelledTakerAmountAsync(
+ orderHash,
+ );
+ const unavailableTakerTokenAmount = await exchange.getUnavailableTakerAmountAsync(orderHash);
+ const totalMakerTokenAmount = signedOrder.makerTokenAmount;
+ const totalTakerTokenAmount = signedOrder.takerTokenAmount;
+ const remainingTakerTokenAmount = totalTakerTokenAmount.minus(unavailableTakerTokenAmount);
+ const remainingMakerTokenAmount = remainingTakerTokenAmount.times(totalMakerTokenAmount)
+ .dividedToIntegerBy(totalTakerTokenAmount);
+ const fillableMakerTokenAmount = BigNumber.min([makerProxyAllowance, makerBalance]);
+ const remainingFillableMakerTokenAmount = BigNumber.min(fillableMakerTokenAmount, remainingMakerTokenAmount);
+ // TODO: Handle edge case where maker token is ZRX with fee
+ const orderRelevantState = {
+ makerBalance,
+ makerProxyAllowance,
+ makerFeeBalance,
+ makerFeeProxyAllowance,
+ filledTakerTokenAmount,
+ canceledTakerTokenAmount,
+ remainingFillableMakerTokenAmount,
+ };
+ return orderRelevantState;
+ }
+ private validateIfOrderIsValid(signedOrder: SignedOrder, orderRelevantState: OrderRelevantState): void {
+ const unavailableTakerTokenAmount = orderRelevantState.canceledTakerTokenAmount.add(
+ orderRelevantState.filledTakerTokenAmount,
+ );
+ const availableTakerTokenAmount = signedOrder.takerTokenAmount.minus(unavailableTakerTokenAmount);
+ if (availableTakerTokenAmount.eq(0)) {
+ throw new Error(ExchangeContractErrs.OrderRemainingFillAmountZero);
+ }
+
+ if (orderRelevantState.makerBalance.eq(0)) {
+ throw new Error(ExchangeContractErrs.InsufficientMakerBalance);
+ }
+ if (orderRelevantState.makerProxyAllowance.eq(0)) {
+ throw new Error(ExchangeContractErrs.InsufficientMakerAllowance);
+ }
+ if (!signedOrder.makerFee.eq(0)) {
+ if (orderRelevantState.makerFeeBalance.eq(0)) {
+ throw new Error(ExchangeContractErrs.InsufficientMakerFeeBalance);
+ }
+ if (orderRelevantState.makerFeeProxyAllowance.eq(0)) {
+ throw new Error(ExchangeContractErrs.InsufficientMakerFeeAllowance);
+ }
+ }
+ // TODO Add linear function solver when maker token is ZRX #badass
+ // Return the max amount that's fillable
+ }
+}
diff --git a/packages/0x.js/src/utils/order_validation_utils.ts b/packages/0x.js/src/utils/order_validation_utils.ts
new file mode 100644
index 000000000..f03703c4e
--- /dev/null
+++ b/packages/0x.js/src/utils/order_validation_utils.ts
@@ -0,0 +1,166 @@
+import * as _ from 'lodash';
+import BigNumber from 'bignumber.js';
+import {ExchangeContractErrs, SignedOrder, Order, ZeroExError, TradeSide, TransferType} from '../types';
+import {ZeroEx} from '../0x';
+import {TokenWrapper} from '../contract_wrappers/token_wrapper';
+import {ExchangeWrapper} from '../contract_wrappers/exchange_wrapper';
+import {utils} from '../utils/utils';
+import {constants} from '../utils/constants';
+import {ExchangeTransferSimulator} from './exchange_transfer_simulator';
+
+export class OrderValidationUtils {
+ private tokenWrapper: TokenWrapper;
+ private exchangeWrapper: ExchangeWrapper;
+ constructor(tokenWrapper: TokenWrapper, exchangeWrapper: ExchangeWrapper) {
+ this.tokenWrapper = tokenWrapper;
+ this.exchangeWrapper = exchangeWrapper;
+ }
+ public async validateOrderFillableOrThrowAsync(
+ exchangeTradeEmulator: ExchangeTransferSimulator, signedOrder: SignedOrder, zrxTokenAddress: string,
+ expectedFillTakerTokenAmount?: BigNumber): Promise<void> {
+ const orderHash = utils.getOrderHashHex(signedOrder);
+ const unavailableTakerTokenAmount = await this.exchangeWrapper.getUnavailableTakerAmountAsync(orderHash);
+ this.validateRemainingFillAmountNotZeroOrThrow(
+ signedOrder.takerTokenAmount, unavailableTakerTokenAmount,
+ );
+ this.validateOrderNotExpiredOrThrow(signedOrder.expirationUnixTimestampSec);
+ let fillTakerTokenAmount = signedOrder.takerTokenAmount.minus(unavailableTakerTokenAmount);
+ if (!_.isUndefined(expectedFillTakerTokenAmount)) {
+ fillTakerTokenAmount = expectedFillTakerTokenAmount;
+ }
+ const fillMakerTokenAmount = this.getPartialAmount(
+ fillTakerTokenAmount,
+ signedOrder.takerTokenAmount,
+ signedOrder.makerTokenAmount,
+ );
+ await exchangeTradeEmulator.transferFromAsync(
+ signedOrder.makerTokenAddress, signedOrder.maker, signedOrder.taker, fillMakerTokenAmount,
+ TradeSide.Maker, TransferType.Trade,
+ );
+ const makerFeeAmount = this.getPartialAmount(
+ fillTakerTokenAmount,
+ signedOrder.takerTokenAmount,
+ signedOrder.makerFee,
+ );
+ await exchangeTradeEmulator.transferFromAsync(
+ zrxTokenAddress, signedOrder.maker, signedOrder.feeRecipient, makerFeeAmount,
+ TradeSide.Maker, TransferType.Fee,
+ );
+ }
+ public async validateFillOrderThrowIfInvalidAsync(
+ exchangeTradeEmulator: ExchangeTransferSimulator, signedOrder: SignedOrder,
+ fillTakerTokenAmount: BigNumber, takerAddress: string,
+ zrxTokenAddress: string): Promise<BigNumber> {
+ if (fillTakerTokenAmount.eq(0)) {
+ throw new Error(ExchangeContractErrs.OrderFillAmountZero);
+ }
+ const orderHash = utils.getOrderHashHex(signedOrder);
+ if (!ZeroEx.isValidSignature(orderHash, signedOrder.ecSignature, signedOrder.maker)) {
+ throw new Error(ZeroExError.InvalidSignature);
+ }
+ const unavailableTakerTokenAmount = await this.exchangeWrapper.getUnavailableTakerAmountAsync(orderHash);
+ this.validateRemainingFillAmountNotZeroOrThrow(
+ signedOrder.takerTokenAmount, unavailableTakerTokenAmount,
+ );
+ if (signedOrder.taker !== constants.NULL_ADDRESS && signedOrder.taker !== takerAddress) {
+ throw new Error(ExchangeContractErrs.TransactionSenderIsNotFillOrderTaker);
+ }
+ this.validateOrderNotExpiredOrThrow(signedOrder.expirationUnixTimestampSec);
+ const remainingTakerTokenAmount = signedOrder.takerTokenAmount.minus(unavailableTakerTokenAmount);
+ const filledTakerTokenAmount = remainingTakerTokenAmount.lessThan(fillTakerTokenAmount) ?
+ remainingTakerTokenAmount :
+ fillTakerTokenAmount;
+ await this.validateFillOrderBalancesAllowancesThrowIfInvalidAsync(
+ exchangeTradeEmulator, signedOrder, filledTakerTokenAmount, takerAddress, zrxTokenAddress,
+ );
+
+ const wouldRoundingErrorOccur = await this.exchangeWrapper.isRoundingErrorAsync(
+ filledTakerTokenAmount, signedOrder.takerTokenAmount, signedOrder.makerTokenAmount,
+ );
+ if (wouldRoundingErrorOccur) {
+ throw new Error(ExchangeContractErrs.OrderFillRoundingError);
+ }
+ return filledTakerTokenAmount;
+ }
+ public async validateFillOrKillOrderThrowIfInvalidAsync(
+ exchangeTradeEmulator: ExchangeTransferSimulator, signedOrder: SignedOrder,
+ fillTakerTokenAmount: BigNumber, takerAddress: string, zrxTokenAddress: string): Promise<void> {
+ const filledTakerTokenAmount = await this.validateFillOrderThrowIfInvalidAsync(
+ exchangeTradeEmulator, signedOrder, fillTakerTokenAmount, takerAddress, zrxTokenAddress,
+ );
+ if (filledTakerTokenAmount !== fillTakerTokenAmount) {
+ throw new Error(ExchangeContractErrs.InsufficientRemainingFillAmount);
+ }
+ }
+ public async validateCancelOrderThrowIfInvalidAsync(order: Order,
+ cancelTakerTokenAmount: BigNumber,
+ unavailableTakerTokenAmount: BigNumber,
+ ): Promise<void> {
+ if (cancelTakerTokenAmount.eq(0)) {
+ throw new Error(ExchangeContractErrs.OrderCancelAmountZero);
+ }
+ if (order.takerTokenAmount.eq(unavailableTakerTokenAmount)) {
+ throw new Error(ExchangeContractErrs.OrderAlreadyCancelledOrFilled);
+ }
+ const currentUnixTimestampSec = utils.getCurrentUnixTimestamp();
+ if (order.expirationUnixTimestampSec.lessThan(currentUnixTimestampSec)) {
+ throw new Error(ExchangeContractErrs.OrderCancelExpired);
+ }
+ }
+ public async validateFillOrderBalancesAllowancesThrowIfInvalidAsync(
+ exchangeTradeEmulator: ExchangeTransferSimulator, signedOrder: SignedOrder,
+ fillTakerTokenAmount: BigNumber, senderAddress: string, zrxTokenAddress: string): Promise<void> {
+ const fillMakerTokenAmount = this.getPartialAmount(
+ fillTakerTokenAmount,
+ signedOrder.takerTokenAmount,
+ signedOrder.makerTokenAmount,
+ );
+ await exchangeTradeEmulator.transferFromAsync(
+ signedOrder.makerTokenAddress, signedOrder.maker, senderAddress, fillMakerTokenAmount,
+ TradeSide.Maker, TransferType.Trade,
+ );
+ await exchangeTradeEmulator.transferFromAsync(
+ signedOrder.takerTokenAddress, senderAddress, signedOrder.maker, fillTakerTokenAmount,
+ TradeSide.Taker, TransferType.Trade,
+ );
+ const makerFeeAmount = this.getPartialAmount(
+ fillTakerTokenAmount,
+ signedOrder.takerTokenAmount,
+ signedOrder.makerFee,
+ );
+ await exchangeTradeEmulator.transferFromAsync(
+ zrxTokenAddress, signedOrder.maker, signedOrder.feeRecipient, makerFeeAmount, TradeSide.Maker,
+ TransferType.Fee,
+ );
+ const takerFeeAmount = this.getPartialAmount(
+ fillTakerTokenAmount,
+ signedOrder.takerTokenAmount,
+ signedOrder.takerFee,
+ );
+ await exchangeTradeEmulator.transferFromAsync(
+ zrxTokenAddress, senderAddress, signedOrder.feeRecipient, takerFeeAmount, TradeSide.Taker,
+ TransferType.Fee,
+ );
+ }
+ private validateRemainingFillAmountNotZeroOrThrow(
+ takerTokenAmount: BigNumber, unavailableTakerTokenAmount: BigNumber,
+ ) {
+ if (takerTokenAmount.eq(unavailableTakerTokenAmount)) {
+ throw new Error(ExchangeContractErrs.OrderRemainingFillAmountZero);
+ }
+ }
+ private validateOrderNotExpiredOrThrow(expirationUnixTimestampSec: BigNumber) {
+ const currentUnixTimestampSec = utils.getCurrentUnixTimestamp();
+ if (expirationUnixTimestampSec.lessThan(currentUnixTimestampSec)) {
+ throw new Error(ExchangeContractErrs.OrderFillExpired);
+ }
+ }
+ private getPartialAmount(numerator: BigNumber, denominator: BigNumber,
+ target: BigNumber): BigNumber {
+ const fillMakerTokenAmount = numerator
+ .mul(target)
+ .div(denominator)
+ .round(0);
+ return fillMakerTokenAmount;
+ }
+}
diff --git a/packages/0x.js/src/utils/signature_utils.ts b/packages/0x.js/src/utils/signature_utils.ts
new file mode 100644
index 000000000..d066f8bf0
--- /dev/null
+++ b/packages/0x.js/src/utils/signature_utils.ts
@@ -0,0 +1,44 @@
+import * as ethUtil from 'ethereumjs-util';
+import {ECSignature} from '../types';
+
+export const signatureUtils = {
+ isValidSignature(data: string, signature: ECSignature, signerAddress: string): boolean {
+ const dataBuff = ethUtil.toBuffer(data);
+ const msgHashBuff = ethUtil.hashPersonalMessage(dataBuff);
+ try {
+ const pubKey = ethUtil.ecrecover(
+ msgHashBuff,
+ signature.v,
+ ethUtil.toBuffer(signature.r),
+ ethUtil.toBuffer(signature.s));
+ const retrievedAddress = ethUtil.bufferToHex(ethUtil.pubToAddress(pubKey));
+ return retrievedAddress === signerAddress;
+ } catch (err) {
+ return false;
+ }
+ },
+ parseSignatureHexAsVRS(signatureHex: string): ECSignature {
+ const signatureBuffer = ethUtil.toBuffer(signatureHex);
+ let v = signatureBuffer[0];
+ if (v < 27) {
+ v += 27;
+ }
+ const r = signatureBuffer.slice(1, 33);
+ const s = signatureBuffer.slice(33, 65);
+ const ecSignature: ECSignature = {
+ v,
+ r: ethUtil.bufferToHex(r),
+ s: ethUtil.bufferToHex(s),
+ };
+ return ecSignature;
+ },
+ parseSignatureHexAsRSV(signatureHex: string): ECSignature {
+ const {v, r, s} = ethUtil.fromRpcSig(signatureHex);
+ const ecSignature: ECSignature = {
+ v,
+ r: ethUtil.bufferToHex(r),
+ s: ethUtil.bufferToHex(s),
+ };
+ return ecSignature;
+ },
+};
diff --git a/packages/0x.js/src/utils/utils.ts b/packages/0x.js/src/utils/utils.ts
new file mode 100644
index 000000000..280f3e979
--- /dev/null
+++ b/packages/0x.js/src/utils/utils.ts
@@ -0,0 +1,55 @@
+import * as _ from 'lodash';
+import * as ethABI from 'ethereumjs-abi';
+import * as ethUtil from 'ethereumjs-util';
+import {Order, SignedOrder, SolidityTypes} from '../types';
+import BigNumber from 'bignumber.js';
+import BN = require('bn.js');
+
+export const utils = {
+ /**
+ * Converts BigNumber instance to BN
+ * The only reason we convert to BN is to remain compatible with `ethABI. soliditySHA3` that
+ * expects values of Solidity type `uint` to be passed as type `BN`.
+ * We do not use BN anywhere else in the codebase.
+ */
+ bigNumberToBN(value: BigNumber) {
+ return new BN(value.toString(), 10);
+ },
+ consoleLog(message: string): void {
+ // tslint:disable-next-line: no-console
+ console.log(message);
+ },
+ isParityNode(nodeVersion: string): boolean {
+ return _.includes(nodeVersion, 'Parity');
+ },
+ isTestRpc(nodeVersion: string): boolean {
+ return _.includes(nodeVersion, 'TestRPC');
+ },
+ spawnSwitchErr(name: string, value: any): Error {
+ return new Error(`Unexpected switch value: ${value} encountered for ${name}`);
+ },
+ getOrderHashHex(order: Order|SignedOrder): string {
+ const orderParts = [
+ {value: order.exchangeContractAddress, type: SolidityTypes.Address},
+ {value: order.maker, type: SolidityTypes.Address},
+ {value: order.taker, type: SolidityTypes.Address},
+ {value: order.makerTokenAddress, type: SolidityTypes.Address},
+ {value: order.takerTokenAddress, type: SolidityTypes.Address},
+ {value: order.feeRecipient, type: SolidityTypes.Address},
+ {value: utils.bigNumberToBN(order.makerTokenAmount), type: SolidityTypes.Uint256},
+ {value: utils.bigNumberToBN(order.takerTokenAmount), type: SolidityTypes.Uint256},
+ {value: utils.bigNumberToBN(order.makerFee), type: SolidityTypes.Uint256},
+ {value: utils.bigNumberToBN(order.takerFee), type: SolidityTypes.Uint256},
+ {value: utils.bigNumberToBN(order.expirationUnixTimestampSec), type: SolidityTypes.Uint256},
+ {value: utils.bigNumberToBN(order.salt), type: SolidityTypes.Uint256},
+ ];
+ const types = _.map(orderParts, o => o.type);
+ const values = _.map(orderParts, o => o.value);
+ const hashBuff = ethABI.soliditySHA3(types, values);
+ const hashHex = ethUtil.bufferToHex(hashBuff);
+ return hashHex;
+ },
+ getCurrentUnixTimestamp(): BigNumber {
+ return new BigNumber(Date.now() / 1000);
+ },
+};
diff --git a/packages/0x.js/src/web3_wrapper.ts b/packages/0x.js/src/web3_wrapper.ts
new file mode 100644
index 000000000..c937f9288
--- /dev/null
+++ b/packages/0x.js/src/web3_wrapper.ts
@@ -0,0 +1,172 @@
+import * as _ from 'lodash';
+import * as Web3 from 'web3';
+import BigNumber from 'bignumber.js';
+import promisify = require('es6-promisify');
+import {ZeroExError, Artifact, TransactionReceipt} from './types';
+import {Contract} from './contract';
+
+export class Web3Wrapper {
+ private web3: Web3;
+ private defaults: Partial<Web3.TxData>;
+ private networkIdIfExists?: number;
+ private jsonRpcRequestId: number;
+ constructor(provider: Web3.Provider, defaults?: Partial<Web3.TxData>) {
+ if (_.isUndefined((provider as any).sendAsync)) {
+ // Web3@1.0 provider doesn't support synchronous http requests,
+ // so it only has an async `send` method, instead of a `send` and `sendAsync` in web3@0.x.x`
+ // We re-assign the send method so that Web3@1.0 providers work with 0x.js
+ (provider as any).sendAsync = (provider as any).send;
+ }
+ this.web3 = new Web3();
+ this.web3.setProvider(provider);
+ this.defaults = defaults || {};
+ this.jsonRpcRequestId = 0;
+ }
+ public setProvider(provider: Web3.Provider) {
+ delete this.networkIdIfExists;
+ this.web3.setProvider(provider);
+ }
+ public isAddress(address: string): boolean {
+ return this.web3.isAddress(address);
+ }
+ public async isSenderAddressAvailableAsync(senderAddress: string): Promise<boolean> {
+ const addresses = await this.getAvailableAddressesAsync();
+ return _.includes(addresses, senderAddress);
+ }
+ public async getNodeVersionAsync(): Promise<string> {
+ const nodeVersion = await promisify(this.web3.version.getNode)();
+ return nodeVersion;
+ }
+ public async getTransactionReceiptAsync(txHash: string): Promise<TransactionReceipt> {
+ const transactionReceipt = await promisify(this.web3.eth.getTransactionReceipt)(txHash);
+ transactionReceipt.status = this.normalizeTxReceiptStatus(transactionReceipt.status);
+ return transactionReceipt;
+ }
+ public getCurrentProvider(): Web3.Provider {
+ return this.web3.currentProvider;
+ }
+ public async getNetworkIdIfExistsAsync(): Promise<number|undefined> {
+ if (!_.isUndefined(this.networkIdIfExists)) {
+ return this.networkIdIfExists;
+ }
+
+ try {
+ const networkId = await this.getNetworkAsync();
+ this.networkIdIfExists = Number(networkId);
+ return this.networkIdIfExists;
+ } catch (err) {
+ return undefined;
+ }
+ }
+ public async getContractInstanceFromArtifactAsync<A extends Web3.ContractInstance>(artifact: Artifact,
+ address?: string): Promise<A> {
+ let contractAddress: string;
+ if (_.isUndefined(address)) {
+ const networkIdIfExists = await this.getNetworkIdIfExistsAsync();
+ if (_.isUndefined(networkIdIfExists)) {
+ throw new Error(ZeroExError.NoNetworkId);
+ }
+ if (_.isUndefined(artifact.networks[networkIdIfExists])) {
+ throw new Error(ZeroExError.ContractNotDeployedOnNetwork);
+ }
+ contractAddress = artifact.networks[networkIdIfExists].address.toLowerCase();
+ } else {
+ contractAddress = address;
+ }
+ const doesContractExist = await this.doesContractExistAtAddressAsync(contractAddress);
+ if (!doesContractExist) {
+ throw new Error(ZeroExError.ContractDoesNotExist);
+ }
+ const contractInstance = this.getContractInstance<A>(
+ artifact.abi, contractAddress,
+ );
+ return contractInstance;
+ }
+ public toWei(ethAmount: BigNumber): BigNumber {
+ const balanceWei = this.web3.toWei(ethAmount, 'ether');
+ return balanceWei;
+ }
+ public async getBalanceInWeiAsync(owner: string): Promise<BigNumber> {
+ let balanceInWei = await promisify(this.web3.eth.getBalance)(owner);
+ balanceInWei = new BigNumber(balanceInWei);
+ return balanceInWei;
+ }
+ public async doesContractExistAtAddressAsync(address: string): Promise<boolean> {
+ const code = await promisify(this.web3.eth.getCode)(address);
+ // Regex matches 0x0, 0x00, 0x in order to accommodate poorly implemented clients
+ const codeIsEmpty = /^0x0{0,40}$/i.test(code);
+ return !codeIsEmpty;
+ }
+ public async signTransactionAsync(address: string, message: string): Promise<string> {
+ const signData = await promisify(this.web3.eth.sign)(address, message);
+ return signData;
+ }
+ public async getBlockNumberAsync(): Promise<number> {
+ const blockNumber = await promisify(this.web3.eth.getBlockNumber)();
+ return blockNumber;
+ }
+ public async getBlockAsync(blockParam: string|Web3.BlockParam): Promise<Web3.BlockWithoutTransactionData> {
+ const block = await promisify(this.web3.eth.getBlock)(blockParam);
+ return block;
+ }
+ public async getBlockTimestampAsync(blockParam: string|Web3.BlockParam): Promise<number> {
+ const {timestamp} = await this.getBlockAsync(blockParam);
+ return timestamp;
+ }
+ public async getAvailableAddressesAsync(): Promise<string[]> {
+ const addresses: string[] = await promisify(this.web3.eth.getAccounts)();
+ return addresses;
+ }
+ public async getLogsAsync(filter: Web3.FilterObject): Promise<Web3.LogEntry[]> {
+ let fromBlock = filter.fromBlock;
+ if (_.isNumber(fromBlock)) {
+ fromBlock = this.web3.toHex(fromBlock);
+ }
+ let toBlock = filter.toBlock;
+ if (_.isNumber(toBlock)) {
+ toBlock = this.web3.toHex(toBlock);
+ }
+ const serializedFilter = {
+ ...filter,
+ fromBlock,
+ toBlock,
+ };
+ const payload = {
+ jsonrpc: '2.0',
+ id: this.jsonRpcRequestId++,
+ method: 'eth_getLogs',
+ params: [serializedFilter],
+ };
+ const logs = await this.sendRawPayloadAsync(payload);
+ return logs;
+ }
+ private getContractInstance<A extends Web3.ContractInstance>(abi: Web3.ContractAbi, address: string): A {
+ const web3ContractInstance = this.web3.eth.contract(abi).at(address);
+ const contractInstance = new Contract(web3ContractInstance, this.defaults) as any as A;
+ return contractInstance;
+ }
+ private async getNetworkAsync(): Promise<number> {
+ const networkId = await promisify(this.web3.version.getNetwork)();
+ return networkId;
+ }
+ private async sendRawPayloadAsync(payload: Web3.JSONRPCRequestPayload): Promise<any> {
+ const sendAsync = this.web3.currentProvider.sendAsync.bind(this.web3.currentProvider);
+ const response = await promisify(sendAsync)(payload);
+ const result = response.result;
+ return result;
+ }
+ private normalizeTxReceiptStatus(status: undefined|null|string|0|1): null|0|1 {
+ // Transaction status might have four values
+ // undefined - Testrpc and other old clients
+ // null - New clients on old transactions
+ // number - Parity
+ // hex - Geth
+ if (_.isString(status)) {
+ return this.web3.toDecimal(status) as 0|1;
+ } else if (_.isUndefined(status)) {
+ return null;
+ } else {
+ return status;
+ }
+ }
+}