1 files changed, 74 insertions, 0 deletions
diff --git a/packages/contracts/util/formatters.ts b/packages/contracts/util/formatters.ts
new file mode 100644
index 000000000..cda548617
--- /dev/null
+++ b/packages/contracts/util/formatters.ts
@@ -0,0 +1,74 @@
+import {BigNumber} from 'bignumber.js';
+import * as _ from 'lodash';
+
+import {Order} from './order';
+import {BatchCancelOrders, BatchFillOrders, FillOrdersUpTo} from './types';
+
+export const formatters = {
+  createBatchFill(orders: Order[],
+                  shouldThrowOnInsufficientBalanceOrAllowance: boolean,
+                  fillTakerTokenAmounts: BigNumber[] = []) {
+    const batchFill: BatchFillOrders = {
+      orderAddresses: [],
+      orderValues: [],
+      fillTakerTokenAmounts,
+      shouldThrowOnInsufficientBalanceOrAllowance,
+      v: [],
+      r: [],
+      s: [],
+    };
+    _.forEach(orders, order => {
+      batchFill.orderAddresses.push([order.params.maker, order.params.taker, order.params.makerToken,
+                                     order.params.takerToken, order.params.feeRecipient]);
+      batchFill.orderValues.push([order.params.makerTokenAmount, order.params.takerTokenAmount, order.params.makerFee,
+                                  order.params.takerFee, order.params.expirationTimestampInSec, order.params.salt]);
+      batchFill.v.push(order.params.v);
+      batchFill.r.push(order.params.r);
+      batchFill.s.push(order.params.s);
+      if (fillTakerTokenAmounts.length < orders.length) {
+        batchFill.fillTakerTokenAmounts.push(order.params.takerTokenAmount);
+      }
+    });
+    return batchFill;
+  },
+  createFillUpTo(orders: Order[],
+                 shouldThrowOnInsufficientBalanceOrAllowance: boolean,
+                 fillTakerTokenAmount: BigNumber) {
+    const fillUpTo: FillOrdersUpTo = {
+      orderAddresses: [],
+      orderValues: [],
+      fillTakerTokenAmount,
+      shouldThrowOnInsufficientBalanceOrAllowance,
+      v: [],
+      r: [],
+      s: [],
+    };
+    orders.forEach(order => {
+      fillUpTo.orderAddresses.push([order.params.maker, order.params.taker, order.params.makerToken,
+                                    order.params.takerToken, order.params.feeRecipient]);
+      fillUpTo.orderValues.push([order.params.makerTokenAmount, order.params.takerTokenAmount, order.params.makerFee,
+                                 order.params.takerFee, order.params.expirationTimestampInSec, order.params.salt]);
+      fillUpTo.v.push(order.params.v);
+      fillUpTo.r.push(order.params.r);
+      fillUpTo.s.push(order.params.s);
+    });
+    return fillUpTo;
+  },
+  createBatchCancel(orders: Order[], cancelTakerTokenAmounts: BigNumber[] = []) {
+    const batchCancel: BatchCancelOrders = {
+      orderAddresses: [],
+      orderValues: [],
+      cancelTakerTokenAmounts,
+    };
+    orders.forEach(order => {
+      batchCancel.orderAddresses.push([order.params.maker, order.params.taker, order.params.makerToken,
+                                       order.params.takerToken, order.params.feeRecipient]);
+      batchCancel.orderValues.push([order.params.makerTokenAmount, order.params.takerTokenAmount, order.params.makerFee,
+                                    order.params.takerFee, order.params.expirationTimestampInSec, order.params.salt]);
+      if (cancelTakerTokenAmounts.length < orders.length) {
+        batchCancel.cancelTakerTokenAmounts.push(order.params.takerTokenAmount);
+      }
+    });
+    return batchCancel;
+  },
+};