Merge pull request #171 from 0xProject/feature/zrx-getter

Make getZRXTokenAddressAsync public

1 files changed, 11 insertions, 7 deletions

diff --git a/src/contract_wrappers/exchange_wrapper.ts b/src/contract_wrappers/exchange_wrapper.ts
index 54d7f62d5..694f3b71b 100644
--- a/src/contract_wrappers/exchange_wrapper.ts
+++ b/src/contract_wrappers/exchange_wrapper.ts
@@ -637,7 +637,7 @@ export class ExchangeWrapper extends ContractWrapper {
         assert.doesConformToSchema('signedOrder', signedOrder, schemas.signedOrderSchema);
         assert.isBigNumber('fillTakerTokenAmount', fillTakerTokenAmount);
         await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
-        const zrxTokenAddress = await this._getZRXTokenAddressAsync();
+        const zrxTokenAddress = await this.getZRXTokenAddressAsync();
         await this._orderValidationUtils.validateFillOrderThrowIfInvalidAsync(
             signedOrder, fillTakerTokenAmount, takerAddress, zrxTokenAddress);
     }
@@ -670,7 +670,7 @@ export class ExchangeWrapper extends ContractWrapper {
         assert.doesConformToSchema('signedOrder', signedOrder, schemas.signedOrderSchema);
         assert.isBigNumber('fillTakerTokenAmount', fillTakerTokenAmount);
         await assert.isSenderAddressAsync('takerAddress', takerAddress, this._web3Wrapper);
-        const zrxTokenAddress = await this._getZRXTokenAddressAsync();
+        const zrxTokenAddress = await this.getZRXTokenAddressAsync();
         await this._orderValidationUtils.validateFillOrKillOrderThrowIfInvalidAsync(
             signedOrder, fillTakerTokenAmount, takerAddress, zrxTokenAddress);
     }
@@ -708,6 +708,15 @@ export class ExchangeWrapper extends ContractWrapper {
             throw new Error(errMessage);
         }
     }
+    /**
+     * Returns the ZRX token address used by the exchange contract.
+     * @return Address of ZRX token
+     */
+    public async getZRXTokenAddressAsync(): Promise<string> {
+        const exchangeInstance = await this._getExchangeContractAsync();
+        const ZRXtokenAddress = await exchangeInstance.ZRX_TOKEN_CONTRACT.callAsync();
+        return ZRXtokenAddress;
+    }
     private async _invalidateContractInstancesAsync(): Promise<void> {
         await this.stopWatchingAllEventsAsync();
         delete this._exchangeContractIfExists;
@@ -745,11 +754,6 @@ export class ExchangeWrapper extends ContractWrapper {
         this._exchangeContractIfExists = contractInstance as ExchangeContract;
         return this._exchangeContractIfExists;
     }
-    private async _getZRXTokenAddressAsync(): Promise<string> {
-        const exchangeInstance = await this._getExchangeContractAsync();
-        const ZRXtokenAddress = await exchangeInstance.ZRX_TOKEN_CONTRACT.callAsync();
-        return ZRXtokenAddress;
-    }
     private async _getTokenTransferProxyAddressAsync(): Promise<string> {
         const exchangeInstance = await this._getExchangeContractAsync();
         const tokenTransferProxyAddress = await exchangeInstance.TOKEN_TRANSFER_PROXY_CONTRACT.callAsync();