Refactoring Checkpoint: (WIP)

bizinikiwi/primitives/pez-ethereum-standards/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "pez-ethereum-standards"
+version = "0.1.0"
+authors.workspace = true
+edition.workspace = true
+description = "Interfaces for Ethereum standards"
+license = "Apache-2.0"
+homepage.workspace = true
+repository.workspace = true
+documentation = "https://docs.rs/pez-ethereum-standards"
+
+[lints]
+workspace = true
+
+[dependencies]
+alloy-core = { workspace = true, features = ["sol-types"] }

bizinikiwi/primitives/pez-ethereum-standards/src/IERC20.sol

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+// SPDX-License-Identifier: MIT
+// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)
+// https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/token/ERC20/IERC20.sol
+pragma solidity ^0.8.20;
+
+///
+/// @dev Interface of the ERC-20 standard as defined in the ERC.
+///
+interface IERC20 {
+     /// @dev Emitted when `value` tokens are moved from one account (`from`) to
+     /// another (`to`).
+     ///
+     /// Note that `value` may be zero.
+    event Transfer(address indexed from, address indexed to, uint256 value);
+
+     /// @dev Emitted when the allowance of a `spender` for an `owner` is set by
+     /// a call to {approve}. `value` is the new allowance.
+    event Approval(address indexed owner, address indexed spender, uint256 value);
+
+     /// @dev Returns the value of tokens in existence.
+    function totalSupply() external view returns (uint256);
+
+     /// @dev Returns the value of tokens owned by `account`.
+    function balanceOf(address account) external view returns (uint256);
+
+     /// @dev Moves a `value` amount of tokens from the caller's account to `to`.
+     ///
+     /// Returns a boolean value indicating whether the operation succeeded.
+     ///
+     /// Emits a {Transfer} event.
+    function transfer(address to, uint256 value) external returns (bool);
+
+     /// @dev Returns the remaining number of tokens that `spender` will be
+     /// allowed to spend on behalf of `owner` through {transferFrom}. This is
+     /// zero by default.
+     ///
+     /// This value changes when {approve} or {transferFrom} are called.
+    function allowance(address owner, address spender) external view returns (uint256);
+
+     /// @dev Sets a `value` amount of tokens as the allowance of `spender` over the
+     /// caller's tokens.
+     ///
+     /// Returns a boolean value indicating whether the operation succeeded.
+     ///
+     /// IMPORTANT: Beware that changing an allowance with this method brings the risk
+     /// that someone may use both the old and the new allowance by unfortunate
+     /// transaction ordering. One possible solution to mitigate this race
+     /// condition is to first reduce the spender's allowance to 0 and set the
+     /// desired value afterwards:
+     /// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
+     ///
+     /// Emits an {Approval} event.
+    function approve(address spender, uint256 value) external returns (bool);
+
+     /// @dev Moves a `value` amount of tokens from `from` to `to` using the
+     /// allowance mechanism. `value` is then deducted from the caller's
+     /// allowance.
+     ///
+     /// Returns a boolean value indicating whether the operation succeeded.
+     ///
+     /// Emits a {Transfer} event.
+    function transferFrom(address from, address to, uint256 value) external returns (bool);
+}

bizinikiwi/primitives/pez-ethereum-standards/src/lib.rs

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+// This file is part of Bizinikiwi.
+
+// Copyright (C) Parity Technologies (UK) Ltd.
+// SPDX-License-Identifier: Apache-2.0
+
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// 	http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//! Ethereum standards.
+
+#![no_std]
+
+alloy_core::sol!("src/IERC20.sol");