Added token details function

contracts/protocols/erc20.sol

@@ -1,12 +1,54 @@
-pragma solidity ^0.6.0;
+pragma solidity ^0.6.10;
+pragma experimental ABIEncoderV2;
 
 interface TokenInterface {
     function balanceOf(address) external view returns (uint);
     function allowance(address owner, address spender) external view returns (uint256);
+    function decimals() external view returns (uint);
+    function name() external view returns (string memory);
+    function symbol() external view returns (string memory);
+
 }
 
-
 contract Resolver {
+    struct TokenData {
+        bool isToken;
+        string name;
+        string symbol;
+        uint256 decimals;
+    }
+
+    function getTokenDetails(address[] memory tknAddress) public view returns (TokenData[] memory) {
+        TokenData[] memory tokenDatas = new TokenData[](tknAddress.length);
+        for (uint i = 0; i < tknAddress.length; i++) {
+            if (tknAddress[i] == 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE) {
+                tokenDatas[i] = TokenData(
+                    true,
+                    "ETHER",
+                    "ETH",
+                    18
+                );
+            } else {
+                TokenInterface token = TokenInterface(tknAddress[i]);
+                try token.name() {
+                    tokenDatas[i] = TokenData(
+                        true,
+                        token.name(),
+                        token.symbol(),
+                        token.decimals()
+                    );
+                } catch {
+                    tokenDatas[i] = TokenData(
+                        false,
+                        "",
+                        "",
+                        0
+                    );
+                }
+            }
+        }
+        return tokenDatas;
+    }
 
     function getBalances(address owner, address[] memory tknAddress) public view returns (uint[] memory) {
         uint[] memory tokensBal = new uint[](tknAddress.length);