refactoring route intf

contracts/SmartRoute/intf/IDODOV1Proxy01.sol

@@ -0,0 +1,32 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+pragma solidity 0.6.9;
+pragma experimental ABIEncoderV2;
+
+interface IDODOV1Proxy01 {
+    function dodoSwap(
+        address fromToken,
+        address toToken,
+        uint256 fromTokenAmount,
+        uint256 minReturnAmount,
+        address[] memory dodoPairs,
+        uint8[] memory directions,
+        uint256 deadline
+    ) external payable returns (uint256 returnAmount);
+
+    function externalSwap(
+        address fromToken,
+        address toToken,
+        address approveTarget,
+        address to,
+        uint256 fromTokenAmount,
+        uint256 minReturnAmount,
+        bytes memory callDataConcat,
+        uint256 deadline
+    ) external payable returns (uint256 returnAmount);
+}