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-rw-r--r--packages/contract-wrappers/src/utils/assert.ts60
-rw-r--r--packages/contract-wrappers/src/utils/calldata_optimization_utils.ts44
-rw-r--r--packages/contract-wrappers/src/utils/constants.ts2
3 files changed, 102 insertions, 4 deletions
diff --git a/packages/contract-wrappers/src/utils/assert.ts b/packages/contract-wrappers/src/utils/assert.ts
index 652e5bec3..bed833b8f 100644
--- a/packages/contract-wrappers/src/utils/assert.ts
+++ b/packages/contract-wrappers/src/utils/assert.ts
@@ -1,11 +1,14 @@
import { assert as sharedAssert } from '@0xproject/assert';
// HACK: We need those two unused imports because they're actually used by sharedAssert which gets injected here
import { Schema } from '@0xproject/json-schemas'; // tslint:disable-line:no-unused-variable
-import { signatureUtils } from '@0xproject/order-utils';
-import { ECSignature } from '@0xproject/types'; // tslint:disable-line:no-unused-variable
+import { signatureUtils, assetDataUtils } from '@0xproject/order-utils';
+import { Order } from '@0xproject/types'; // tslint:disable-line:no-unused-variable
import { BigNumber } from '@0xproject/utils'; // tslint:disable-line:no-unused-variable
import { Web3Wrapper } from '@0xproject/web3-wrapper';
import { Provider } from 'ethereum-types';
+import * as _ from 'lodash';
+
+import { constants } from './constants';
export const assert = {
...sharedAssert,
@@ -16,12 +19,12 @@ export const assert = {
signerAddress: string,
): Promise<void> {
const isValid = await signatureUtils.isValidSignatureAsync(provider, orderHash, signature, signerAddress);
- this.assert(isValid, `Expected order with hash '${orderHash}' to have a valid signature`);
+ sharedAssert.assert(isValid, `Expected order with hash '${orderHash}' to have a valid signature`);
},
isValidSubscriptionToken(variableName: string, subscriptionToken: string): void {
const uuidRegex = new RegExp('^[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{4}-[a-fA-F0-9]{12}$');
const isValid = uuidRegex.test(subscriptionToken);
- this.assert(isValid, `Expected ${variableName} to be a valid subscription token`);
+ sharedAssert.assert(isValid, `Expected ${variableName} to be a valid subscription token`);
},
async isSenderAddressAsync(
variableName: string,
@@ -35,4 +38,53 @@ export const assert = {
`Specified ${variableName} ${senderAddressHex} isn't available through the supplied web3 provider`,
);
},
+ ordersCanBeUsedForForwarderContract(orders: Order[], etherTokenAddress: string): void {
+ sharedAssert.assert(!_.isEmpty(orders), 'Expected at least 1 signed order. Found no orders');
+ assert.ordersHaveAtMostOneUniqueValueForProperty(orders, 'makerAssetData');
+ assert.allTakerAssetDatasAreErc20Token(orders, etherTokenAddress);
+ assert.allTakerAddressesAreNull(orders);
+ },
+ feeOrdersCanBeUsedForForwarderContract(orders: Order[], zrxTokenAddress: string, etherTokenAddress: string): void {
+ if (!_.isEmpty(orders)) {
+ assert.allMakerAssetDatasAreErc20Token(orders, zrxTokenAddress);
+ assert.allTakerAssetDatasAreErc20Token(orders, etherTokenAddress);
+ }
+ },
+ allTakerAddressesAreNull(orders: Order[]): void {
+ assert.ordersHaveAtMostOneUniqueValueForProperty(orders, 'takerAddress', constants.NULL_ADDRESS);
+ },
+ allMakerAssetDatasAreErc20Token(orders: Order[], tokenAddress: string): void {
+ assert.ordersHaveAtMostOneUniqueValueForProperty(
+ orders,
+ 'makerAssetData',
+ assetDataUtils.encodeERC20AssetData(tokenAddress),
+ );
+ },
+ allTakerAssetDatasAreErc20Token(orders: Order[], tokenAddress: string): void {
+ assert.ordersHaveAtMostOneUniqueValueForProperty(
+ orders,
+ 'takerAssetData',
+ assetDataUtils.encodeERC20AssetData(tokenAddress),
+ );
+ },
+ /*
+ * Asserts that all the orders have the same value for the provided propertyName
+ * If the value parameter is provided, this asserts that all orders have the prope
+ */
+ ordersHaveAtMostOneUniqueValueForProperty(orders: Order[], propertyName: string, value?: any): void {
+ const allValues = _.map(orders, order => _.get(order, propertyName));
+ sharedAssert.hasAtMostOneUniqueValue(
+ allValues,
+ `Expected all orders to have the same ${propertyName} field. Found the following ${propertyName} values: ${JSON.stringify(
+ allValues,
+ )}`,
+ );
+ if (!_.isUndefined(value)) {
+ const firstValue = _.head(allValues);
+ sharedAssert.assert(
+ firstValue === value,
+ `Expected all orders to have a ${propertyName} field with value: ${value}. Found: ${firstValue}`,
+ );
+ }
+ },
};
diff --git a/packages/contract-wrappers/src/utils/calldata_optimization_utils.ts b/packages/contract-wrappers/src/utils/calldata_optimization_utils.ts
new file mode 100644
index 000000000..3172cf531
--- /dev/null
+++ b/packages/contract-wrappers/src/utils/calldata_optimization_utils.ts
@@ -0,0 +1,44 @@
+import { SignedOrder } from '@0xproject/types';
+import * as _ from 'lodash';
+
+import { constants } from './constants';
+
+export const calldataOptimizationUtils = {
+ /**
+ * Takes an array of orders and outputs an array of equivalent orders where all takerAssetData are '0x' and
+ * all makerAssetData are '0x' except for that of the first order, which retains its original value
+ * @param orders An array of SignedOrder objects
+ * @returns optimized orders
+ */
+ optimizeForwarderOrders(orders: SignedOrder[]): SignedOrder[] {
+ const optimizedOrders = _.map(orders, (order, index) =>
+ transformOrder(order, {
+ makerAssetData: index === 0 ? order.makerAssetData : constants.NULL_BYTES,
+ takerAssetData: constants.NULL_BYTES,
+ }),
+ );
+ return optimizedOrders;
+ },
+ /**
+ * Takes an array of orders and outputs an array of equivalent orders where all takerAssetData are '0x' and
+ * all makerAssetData are '0x'
+ * @param orders An array of SignedOrder objects
+ * @returns optimized orders
+ */
+ optimizeForwarderFeeOrders(orders: SignedOrder[]): SignedOrder[] {
+ const optimizedOrders = _.map(orders, (order, index) =>
+ transformOrder(order, {
+ makerAssetData: constants.NULL_BYTES,
+ takerAssetData: constants.NULL_BYTES,
+ }),
+ );
+ return optimizedOrders;
+ },
+};
+
+const transformOrder = (order: SignedOrder, partialOrder: Partial<SignedOrder>) => {
+ return {
+ ...order,
+ ...partialOrder,
+ };
+};
diff --git a/packages/contract-wrappers/src/utils/constants.ts b/packages/contract-wrappers/src/utils/constants.ts
index 039475b7f..2df11538c 100644
--- a/packages/contract-wrappers/src/utils/constants.ts
+++ b/packages/contract-wrappers/src/utils/constants.ts
@@ -2,6 +2,7 @@ import { BigNumber } from '@0xproject/utils';
export const constants = {
NULL_ADDRESS: '0x0000000000000000000000000000000000000000',
+ NULL_BYTES: '0x',
TESTRPC_NETWORK_ID: 50,
INVALID_JUMP_PATTERN: 'invalid JUMP at',
REVERT: 'revert',
@@ -10,4 +11,5 @@ export const constants = {
// tslint:disable-next-line:custom-no-magic-numbers
UNLIMITED_ALLOWANCE_IN_BASE_UNITS: new BigNumber(2).pow(256).minus(1),
DEFAULT_BLOCK_POLLING_INTERVAL: 1000,
+ ZERO_AMOUNT: new BigNumber(0),
};