1 files changed, 32 insertions, 0 deletions
diff --git a/packages/contracts/src/utils/simple_filled_cancelled_fetcher.ts b/packages/contracts/src/utils/simple_filled_cancelled_fetcher.ts
new file mode 100644
index 000000000..0a80637cc
--- /dev/null
+++ b/packages/contracts/src/utils/simple_filled_cancelled_fetcher.ts
@@ -0,0 +1,32 @@
+import { AbstractOrderFilledCancelledFetcher } from '@0xproject/order-utils';
+import { BigNumber } from '@0xproject/utils';
+import { BlockParamLiteral } from 'ethereum-types';
+
+import {
+    CancelContractEventArgs,
+    ExchangeContract,
+    FillContractEventArgs,
+} from '../contract_wrappers/generated/exchange';
+
+export class SimpleOrderFilledCancelledFetcher implements AbstractOrderFilledCancelledFetcher {
+    private _exchangeContract: ExchangeContract;
+    private _zrxAddress: string;
+    constructor(exchange: ExchangeContract, zrxAddress: string) {
+        this._exchangeContract = exchange;
+        this._zrxAddress = zrxAddress;
+    }
+    public async getFilledTakerAmountAsync(orderHash: string): Promise<BigNumber> {
+        const filledTakerAmount = new BigNumber(await this._exchangeContract.filled.callAsync(orderHash));
+        return filledTakerAmount;
+    }
+    public async isOrderCancelledAsync(orderHash: string): Promise<boolean> {
+        const methodOpts = {
+            defaultBlock: BlockParamLiteral.Latest,
+        };
+        const isCancelled = await this._exchangeContract.cancelled.callAsync(orderHash);
+        return isCancelled;
+    }
+    public getZRXTokenAddress(): string {
+        return this._zrxAddress;
+    }
+}