1 files changed, 60 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..e706c15b5
--- /dev/null
+++ b/packages/contracts/src/utils/formatters.ts
@@ -0,0 +1,60 @@
+import { BigNumber } from '@0xproject/utils';
+import * as _ from 'lodash';
+
+import { orderUtils } from './order_utils';
+import { BatchCancelOrders, BatchFillOrders, MarketBuyOrders, MarketSellOrders, SignedOrder } from './types';
+
+export const formatters = {
+    createBatchFill(signedOrders: SignedOrder[], takerAssetFillAmounts: BigNumber[] = []) {
+        const batchFill: BatchFillOrders = {
+            orders: [],
+            signatures: [],
+            takerAssetFillAmounts,
+        };
+        _.forEach(signedOrders, signedOrder => {
+            const orderStruct = orderUtils.getOrderStruct(signedOrder);
+            batchFill.orders.push(orderStruct);
+            batchFill.signatures.push(signedOrder.signature);
+            if (takerAssetFillAmounts.length < signedOrders.length) {
+                batchFill.takerAssetFillAmounts.push(signedOrder.takerAssetAmount);
+            }
+        });
+        return batchFill;
+    },
+    createMarketSellOrders(signedOrders: SignedOrder[], takerAssetFillAmount: BigNumber) {
+        const marketSellOrders: MarketSellOrders = {
+            orders: [],
+            signatures: [],
+            takerAssetFillAmount,
+        };
+        _.forEach(signedOrders, signedOrder => {
+            const orderStruct = orderUtils.getOrderStruct(signedOrder);
+            marketSellOrders.orders.push(orderStruct);
+            marketSellOrders.signatures.push(signedOrder.signature);
+        });
+        return marketSellOrders;
+    },
+    createMarketBuyOrders(signedOrders: SignedOrder[], makerAssetFillAmount: BigNumber) {
+        const marketBuyOrders: MarketBuyOrders = {
+            orders: [],
+            signatures: [],
+            makerAssetFillAmount,
+        };
+        _.forEach(signedOrders, signedOrder => {
+            const orderStruct = orderUtils.getOrderStruct(signedOrder);
+            marketBuyOrders.orders.push(orderStruct);
+            marketBuyOrders.signatures.push(signedOrder.signature);
+        });
+        return marketBuyOrders;
+    },
+    createBatchCancel(signedOrders: SignedOrder[]) {
+        const batchCancel: BatchCancelOrders = {
+            orders: [],
+        };
+        _.forEach(signedOrders, signedOrder => {
+            const orderStruct = orderUtils.getOrderStruct(signedOrder);
+            batchCancel.orders.push(orderStruct);
+        });
+        return batchCancel;
+    },
+};