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-rw-r--r--src/contract_wrappers/exchange_wrapper.ts33
-rw-r--r--src/types.ts9
2 files changed, 42 insertions, 0 deletions
diff --git a/src/contract_wrappers/exchange_wrapper.ts b/src/contract_wrappers/exchange_wrapper.ts
index 3f6eb0dab..74303cf82 100644
--- a/src/contract_wrappers/exchange_wrapper.ts
+++ b/src/contract_wrappers/exchange_wrapper.ts
@@ -1,4 +1,5 @@
import * as _ from 'lodash';
+import * as BigNumber from 'bignumber.js';
import {Web3Wrapper} from '../web3_wrapper';
import {ECSignature, ZeroExError, ExchangeContract} from '../types';
import {assert} from '../utils/assert';
@@ -37,6 +38,38 @@ export class ExchangeWrapper extends ContractWrapper {
);
return isValidSignature;
}
+ /**
+ * Returns the unavailable takerAmount of an order. Unavailable amount is defined as the total
+ * amount that has been filled or cancelled. The remaining takerAmount can be calculated by
+ * subtracting the unavailable amount from the total order takerAmount.
+ */
+ public async getUnavailableTakerAmountAsync(orderHashHex: string): Promise<BigNumber.BigNumber> {
+ assert.isValidOrderHash('orderHashHex', orderHashHex);
+
+ const exchangeContract = await this.getExchangeContractAsync();
+ const unavailableAmountInBaseUnits = await exchangeContract.getUnavailableValueT.call(orderHashHex);
+ return unavailableAmountInBaseUnits;
+ }
+ /**
+ * Retrieve the takerAmount of an order that has already been filled.
+ */
+ public async getFilledTakerAmountAsync(orderHashHex: string): Promise<BigNumber.BigNumber> {
+ assert.isValidOrderHash('orderHashHex', orderHashHex);
+
+ const exchangeContract = await this.getExchangeContractAsync();
+ const fillAmountInBaseUnits = await exchangeContract.filled.call(orderHashHex);
+ return fillAmountInBaseUnits;
+ }
+ /**
+ * Retrieve the takerAmount of an order that has been cancelled.
+ */
+ public async getCanceledTakerAmountAsync(orderHashHex: string): Promise<BigNumber.BigNumber> {
+ assert.isValidOrderHash('orderHashHex', orderHashHex);
+
+ const exchangeContract = await this.getExchangeContractAsync();
+ const cancelledAmountInBaseUnits = await exchangeContract.cancelled.call(orderHashHex);
+ return cancelledAmountInBaseUnits;
+ }
private async getExchangeContractAsync(): Promise<ExchangeContract> {
if (!_.isUndefined(this.exchangeContractIfExists)) {
return this.exchangeContractIfExists;
diff --git a/src/types.ts b/src/types.ts
index 3619c800f..25338a531 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -29,6 +29,15 @@ export interface ECSignature {
export interface ExchangeContract {
isValidSignature: any;
+ getUnavailableValueT: {
+ call: (orderHash: string) => BigNumber.BigNumber;
+ };
+ filled: {
+ call: (orderHash: string) => BigNumber.BigNumber;
+ };
+ cancelled: {
+ call: (orderHash: string) => BigNumber.BigNumber;
+ };
}
export interface TokenContract {