Merge branch 'development' into v2-prototype

1 files changed, 28 insertions, 0 deletions

diff --git a/packages/contract-wrappers/src/fetchers/simple_balance_and_proxy_allowance_fetcher.ts b/packages/contract-wrappers/src/fetchers/simple_balance_and_proxy_allowance_fetcher.ts
new file mode 100644
index 000000000..5017d879a
--- /dev/null
+++ b/packages/contract-wrappers/src/fetchers/simple_balance_and_proxy_allowance_fetcher.ts
@@ -0,0 +1,28 @@
+import { AbstractBalanceAndProxyAllowanceFetcher } from '@0xproject/order-utils';
+import { BlockParamLiteral } from '@0xproject/types';
+import { BigNumber } from '@0xproject/utils';
+
+import { TokenWrapper } from '../contract_wrappers/token_wrapper';
+
+export class SimpleBalanceAndProxyAllowanceFetcher implements AbstractBalanceAndProxyAllowanceFetcher {
+    private _tokenWrapper: TokenWrapper;
+    private _defaultBlock: BlockParamLiteral;
+    constructor(token: TokenWrapper, defaultBlock: BlockParamLiteral) {
+        this._tokenWrapper = token;
+        this._defaultBlock = defaultBlock;
+    }
+    public async getBalanceAsync(tokenAddress: string, userAddress: string): Promise<BigNumber> {
+        const methodOpts = {
+            defaultBlock: this._defaultBlock,
+        };
+        const balance = this._tokenWrapper.getBalanceAsync(tokenAddress, userAddress, methodOpts);
+        return balance;
+    }
+    public async getProxyAllowanceAsync(tokenAddress: string, userAddress: string): Promise<BigNumber> {
+        const methodOpts = {
+            defaultBlock: this._defaultBlock,
+        };
+        const proxyAllowance = this._tokenWrapper.getProxyAllowanceAsync(tokenAddress, userAddress, methodOpts);
+        return proxyAllowance;
+    }
+}