Merge pull request #21 from Gearbox-protocol/token_compressor

feat: token compressor

Author: 0xmikko

contracts/compressors/TokenCompressor.sol

@@ -3,4 +3,36 @@
 // (c) Gearbox Foundation, 2024.
 pragma solidity ^0.8.17;
 
-contract TokenCompressor {}
+import {TokenInfo} from "../types/MarketData.sol";
+import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
+import {LibString} from "@solady/utils/LibString.sol";
+
+contract TokenCompressor {
+    function getTokenInfo(address token) public view returns (TokenInfo memory result) {
+        result.token = token;
+        result.decimals = IERC20Metadata(token).decimals();
+
+        // Fallback to low-level call to handle bytes32 symbol
+        (bool success, bytes memory data) = token.staticcall(abi.encodeWithSignature("symbol()"));
+        if (success) {
+            if (data.length == 32) {
+                result.symbol = LibString.fromSmallString(bytes32(data));
+            } else {
+                result.symbol = abi.decode(data, (string));
+            }
+        } else {
+            revert("symbol retrieval failed");
+        }
+
+        (success, data) = token.staticcall(abi.encodeWithSignature("name()"));
+        if (success) {
+            if (data.length == 32) {
+                result.name = LibString.fromSmallString(bytes32(data));
+            } else {
+                result.name = abi.decode(data, (string));
+            }
+        } else {
+            revert("name retrieval failed");
+        }
+    }
+}