1 files changed, 49 insertions, 0 deletions
diff --git a/packages/contracts/util/signed_order_utils.ts b/packages/contracts/util/signed_order_utils.ts
new file mode 100644
index 000000000..fc2f800cd
--- /dev/null
+++ b/packages/contracts/util/signed_order_utils.ts
@@ -0,0 +1,49 @@
+import { SignedOrder } from '0x.js';
+import { BigNumber } from '@0xproject/utils';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
+import ethUtil = require('ethereumjs-util');
+import * as _ from 'lodash';
+
+import { crypto } from './crypto';
+
+export const signedOrderUtils = {
+    createFill: (
+        signedOrder: SignedOrder,
+        shouldThrowOnInsufficientBalanceOrAllowance?: boolean,
+        fillTakerTokenAmount?: BigNumber,
+    ) => {
+        const fill = {
+            ...signedOrderUtils.getOrderAddressesAndValues(signedOrder),
+            fillTakerTokenAmount: fillTakerTokenAmount || signedOrder.takerTokenAmount,
+            shouldThrowOnInsufficientBalanceOrAllowance: !!shouldThrowOnInsufficientBalanceOrAllowance,
+            ...signedOrder.ecSignature,
+        };
+        return fill;
+    },
+    createCancel(signedOrder: SignedOrder, cancelTakerTokenAmount?: BigNumber) {
+        const cancel = {
+            ...signedOrderUtils.getOrderAddressesAndValues(signedOrder),
+            cancelTakerTokenAmount: cancelTakerTokenAmount || signedOrder.takerTokenAmount,
+        };
+        return cancel;
+    },
+    getOrderAddressesAndValues(signedOrder: SignedOrder) {
+        return {
+            orderAddresses: [
+                signedOrder.maker,
+                signedOrder.taker,
+                signedOrder.makerTokenAddress,
+                signedOrder.takerTokenAddress,
+                signedOrder.feeRecipient,
+            ],
+            orderValues: [
+                signedOrder.makerTokenAmount,
+                signedOrder.takerTokenAmount,
+                signedOrder.makerFee,
+                signedOrder.takerFee,
+                signedOrder.expirationUnixTimestampSec,
+                signedOrder.salt,
+            ],
+        };
+    },
+};