feat: initialize Kurdistan SDK - independent fork of Polkadot SDK

substrate/frame/revive/uapi/sol/IStorage.sol

@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.0;
+
+address constant STORAGE_ADDR = 0x0000000000000000000000000000000000000901;
+
+interface IStorage {
+	/// Clear the value at the given key in the contract storage.
+	///
+	/// # Important
+	///
+	/// This function can only be called via a delegate call! For Solidity, the low level
+	/// `delegatecall` function has to be used. For languages that use the FFI
+	/// of `pallet-revive`, the [`crate::HostFn::delegate_call`] function can be used.
+	///
+	/// # Parameters
+	///
+	/// - `key`: The storage key.
+	///
+	/// # Return
+	///
+	/// If no entry existed for this key, `containedKey` is `false` and
+	/// `valueLen` is `0`.
+	function clearStorage(uint32 flags, bool isFixedKey, bytes memory key)
+		external returns (bool containedKey, uint valueLen);
+
+	/// Checks whether there is a value stored under the given key.
+	///
+	/// The key length must not exceed the maximum defined by the contracts module parameter.
+	///
+	/// # Important
+	///
+	/// This function can only be called via a delegate call! For Solidity, the low level
+	/// `delegatecall` function has to be used. For languages that use the FFI
+	/// of `pallet-revive`, the [`crate::HostFn::delegate_call`] function can be used.
+	///
+	/// # Parameters
+	///
+	/// - `key`: The storage key.
+	///
+	/// # Return
+	///
+	/// Returns the size of the pre-existing value at the specified key.
+	/// If no entry exists for this key `containedKey` is `false` and
+	/// `valueLen` is `0`.
+	function containsStorage(uint32 flags, bool isFixedKey, bytes memory key)
+		external view returns (bool containedKey, uint valueLen);
+
+	/// Retrieve and remove the value under the given key from storage.
+	///
+	/// # Important
+	///
+	/// This function can only be called via a delegate call! For Solidity, the low level
+	/// `delegatecall` function has to be used. For languages that use the FFI
+	/// of `pallet-revive`, the [`crate::HostFn::delegate_call`] function can be used.
+	///
+	/// # Parameters
+	///
+	/// - `key`: The storage key.
+	///
+	/// # Errors
+	///
+	/// Returns empty bytes if no value was found under `key`.
+	function takeStorage(uint32 flags, bool isFixedKey, bytes memory key)
+		external returns (bytes memory);
+}