From d3a59ede1ff6a0928996d75c21233883b147380f Mon Sep 17 00:00:00 2001
From: Trubnikov Sergey <bugrazoid@yandex.ru>
Date: Fri, 21 Apr 2023 07:22:35 +0000
Subject: [PATCH] feat: impl balance_of_cross


---
--- a/pallets/balances-adapter/src/erc.rs
+++ b/pallets/balances-adapter/src/erc.rs
@@ -58,6 +58,7 @@
 		// self.consume_store_reads(1)?;
 		Err("Approve not supported now".into())
 	}
+
 	fn balance_of(&self, owner: Address) -> Result<U256> {
 		// self.consume_store_reads(1)?;
 		let owner = T::CrossAccountId::from_eth(owner);
@@ -141,6 +142,13 @@
 where
 	T::AccountId: From<[u8; 32]>,
 {
+	fn balance_of_cross(&self, owner: CrossAddress) -> Result<U256> {
+		// self.consume_store_reads(1)?;
+		let owner = owner.into_sub_cross_account::<T>()?;
+		let balance = <T as Config>::Currency::free_balance(owner.as_sub());
+		Ok(balance.into())
+	}
+
 	// #[weight(<SelfWeightOf<T>>::transfer())]
 	fn transfer_cross(&mut self, caller: Caller, to: CrossAddress, amount: U256) -> Result<bool> {
 		let caller = T::CrossAccountId::from_eth(caller);
--- a/pallets/balances-adapter/src/stubs/UniqueNativeFungible.sol
+++ b/pallets/balances-adapter/src/stubs/UniqueNativeFungible.sol
@@ -17,8 +17,17 @@
 	}
 }
 
-/// @dev the ERC-165 identifier for this interface is 0xff15c6f4
+/// @dev the ERC-165 identifier for this interface is 0x1313556c
 contract ERC20UniqueExtensions is Dummy, ERC165 {
+	/// @dev EVM selector for this function is: 0xec069398,
+	///  or in textual repr: balanceOfCross((address,uint256))
+	function balanceOfCross(CrossAddress memory owner) public view returns (uint256) {
+		require(false, stub_error);
+		owner;
+		dummy;
+		return 0;
+	}
+
 	/// @dev EVM selector for this function is: 0x2ada85ff,
 	///  or in textual repr: transferCross((address,uint256),uint256)
 	function transferCross(CrossAddress memory to, uint256 amount) public returns (bool) {
--- a/tests/src/eth/abi/nativeFungible.json
+++ b/tests/src/eth/abi/nativeFungible.json
@@ -79,6 +79,23 @@
     "type": "function"
   },
   {
+    "inputs": [
+      {
+        "components": [
+          { "internalType": "address", "name": "eth", "type": "address" },
+          { "internalType": "uint256", "name": "sub", "type": "uint256" }
+        ],
+        "internalType": "struct CrossAddress",
+        "name": "owner",
+        "type": "tuple"
+      }
+    ],
+    "name": "balanceOfCross",
+    "outputs": [{ "internalType": "uint256", "name": "", "type": "uint256" }],
+    "stateMutability": "view",
+    "type": "function"
+  },
+  {
     "inputs": [],
     "name": "decimals",
     "outputs": [{ "internalType": "uint8", "name": "", "type": "uint8" }],
--- a/tests/src/eth/api/UniqueNativeFungible.sol
+++ b/tests/src/eth/api/UniqueNativeFungible.sol
@@ -12,8 +12,12 @@
 	function supportsInterface(bytes4 interfaceID) external view returns (bool);
 }
 
-/// @dev the ERC-165 identifier for this interface is 0xff15c6f4
+/// @dev the ERC-165 identifier for this interface is 0x1313556c
 interface ERC20UniqueExtensions is Dummy, ERC165 {
+	/// @dev EVM selector for this function is: 0xec069398,
+	///  or in textual repr: balanceOfCross((address,uint256))
+	function balanceOfCross(CrossAddress memory owner) external view returns (uint256);
+
 	/// @dev EVM selector for this function is: 0x2ada85ff,
 	///  or in textual repr: transferCross((address,uint256),uint256)
 	function transferCross(CrossAddress memory to, uint256 amount) external returns (bool);

-- 
gitstuff