1 files changed, 107 insertions, 0 deletions
diff --git a/packages/contracts/src/utils/formatters.ts b/packages/contracts/src/utils/formatters.ts
new file mode 100644
index 000000000..88e12a6b4
--- /dev/null
+++ b/packages/contracts/src/utils/formatters.ts
@@ -0,0 +1,107 @@
+import { SignedOrder } from '0x.js';
+import { BigNumber } from '@0xproject/utils';
+import * as _ from 'lodash';
+
+import { BatchCancelOrders, BatchFillOrders, MarketFillOrders } from './types';
+
+export const formatters = {
+    createBatchFill(
+        signedOrders: SignedOrder[],
+        takerTokenFillAmounts: BigNumber[] = [],
+    ) {
+        const batchFill: BatchFillOrders = {
+            orderAddresses: [],
+            orderValues: [],
+            takerTokenFillAmounts,
+            v: [],
+            r: [],
+            s: [],
+        };
+        _.forEach(signedOrders, signedOrder => {
+            batchFill.orderAddresses.push([
+                signedOrder.maker,
+                signedOrder.taker,
+                signedOrder.makerTokenAddress,
+                signedOrder.takerTokenAddress,
+                signedOrder.feeRecipient,
+            ]);
+            batchFill.orderValues.push([
+                signedOrder.makerTokenAmount,
+                signedOrder.takerTokenAmount,
+                signedOrder.makerFee,
+                signedOrder.takerFee,
+                signedOrder.expirationUnixTimestampSec,
+                signedOrder.salt,
+            ]);
+            batchFill.v.push(signedOrder.ecSignature.v);
+            batchFill.r.push(signedOrder.ecSignature.r);
+            batchFill.s.push(signedOrder.ecSignature.s);
+            if (takerTokenFillAmounts.length < signedOrders.length) {
+                batchFill.takerTokenFillAmounts.push(signedOrder.takerTokenAmount);
+            }
+        });
+        return batchFill;
+    },
+    createMarketFillOrders(
+        signedOrders: SignedOrder[],
+        takerTokenFillAmount: BigNumber,
+    ) {
+        const marketFillOrders: MarketFillOrders = {
+            orderAddresses: [],
+            orderValues: [],
+            takerTokenFillAmount,
+            v: [],
+            r: [],
+            s: [],
+        };
+        signedOrders.forEach(signedOrder => {
+            marketFillOrders.orderAddresses.push([
+                signedOrder.maker,
+                signedOrder.taker,
+                signedOrder.makerTokenAddress,
+                signedOrder.takerTokenAddress,
+                signedOrder.feeRecipient,
+            ]);
+            marketFillOrders.orderValues.push([
+                signedOrder.makerTokenAmount,
+                signedOrder.takerTokenAmount,
+                signedOrder.makerFee,
+                signedOrder.takerFee,
+                signedOrder.expirationUnixTimestampSec,
+                signedOrder.salt,
+            ]);
+            marketFillOrders.v.push(signedOrder.ecSignature.v);
+            marketFillOrders.r.push(signedOrder.ecSignature.r);
+            marketFillOrders.s.push(signedOrder.ecSignature.s);
+        });
+        return marketFillOrders;
+    },
+    createBatchCancel(signedOrders: SignedOrder[], takerTokenCancelAmounts: BigNumber[] = []) {
+        const batchCancel: BatchCancelOrders = {
+            orderAddresses: [],
+            orderValues: [],
+            takerTokenCancelAmounts,
+        };
+        signedOrders.forEach(signedOrder => {
+            batchCancel.orderAddresses.push([
+                signedOrder.maker,
+                signedOrder.taker,
+                signedOrder.makerTokenAddress,
+                signedOrder.takerTokenAddress,
+                signedOrder.feeRecipient,
+            ]);
+            batchCancel.orderValues.push([
+                signedOrder.makerTokenAmount,
+                signedOrder.takerTokenAmount,
+                signedOrder.makerFee,
+                signedOrder.takerFee,
+                signedOrder.expirationUnixTimestampSec,
+                signedOrder.salt,
+            ]);
+            if (takerTokenCancelAmounts.length < signedOrders.length) {
+                batchCancel.takerTokenCancelAmounts.push(signedOrder.takerTokenAmount);
+            }
+        });
+        return batchCancel;
+    },
+};