KPKWSTETHV3RateProvider

{{
  "language": "Solidity",
  "sources": {
    "contracts/interfaces/lido/IwstETH.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity =0.8.24;

/// @dev https://docs.lido.fi/contracts/wsteth
/// @dev https://etherscan.io/token/0x7f39c581f595b53c5cb19bd0b3f8da6c935e2ca0
interface IwstETH {
  /**
   * Get amount of stETH for a given amount of wstETH
   * @param _wstETHAmount amount of wstETH
   * @return Amount of stETH for a given wstETH amount
   */
  function getStETHByWstETH(uint256 _wstETHAmount) external view returns (uint256);

  /**
   * Get amount of wstETH for a given amount of stETH
   * @param _stETHAmount amount of stETH
   * @return Amount of wstETH for a given stETH amount
   */
  function getWstETHByStETH(uint256 _stETHAmount) external view returns (uint256);

  /**
   * @return Returns the amount of stETH tokens corresponding to one wstETH
   */
  function stEthPerToken() external view returns (uint256);

  /**
   * Exchanges stETH to wstETH
   * @param _stETHAmount amount of stETH to wrap in exchange for wstETH
   * @return Amount of wstETH user receives after wrap
   */
  function wrap(uint256 _stETHAmount) external returns (uint256);

  /**
   * Exchanges wstETH to stETH
   * @param _wstETHAmount amount of wstETH to unwrap in exchange for stETH
   * @return Amount of stETH user receives after unwrapping
   */
  function unwrap(uint256 _wstETHAmount) external returns (uint256);

  /**
   * Shortcut to stake ETH and auto-wrap returned stETH
   */
  receive() external payable;
}
"
    },
    "contracts/rate-providers/KPKWSTETHV3RateProvider.sol": {
      "content": "// SPDX-License-Identifier: GPL-3.0-or-later
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

pragma solidity =0.8.24;

import '../interfaces/lido/IwstETH.sol';

interface IERC4626 {
  /**
   * @dev Returns the amount of assets that the Vault would exchange for the amount of shares provided, in an ideal
   * scenario where all the conditions are met.
   *
   * - MUST NOT be inclusive of any fees that are charged against assets in the Vault.
   * - MUST NOT show any variations depending on the caller.
   * - MUST NOT reflect slippage or other on-chain conditions, when performing the actual exchange.
   * - MUST NOT revert.
   *
   * NOTE: This calculation MAY NOT reflect the “per-user” price-per-share, and instead should reflect the
   * “average-user’s” price-per-share, meaning what the average user should expect to see when exchanging to and
   * from.
   */
  function convertToAssets(uint256 shares) external view returns (uint256 assets);
}

/**
 * @title Gearbox KPKWSTETHV3 Exchange Rate Provider
 * @notice Returns the value of KPKWSTETHV3 in terms of underlying ETH
 */
contract KPKWSTETHV3RateProvider {
  IwstETH public immutable wstETH;
  IERC4626 public immutable TOKEN;

  constructor(IwstETH _wstETH, IERC4626 _erc4626) {
    wstETH = _wstETH;
    TOKEN = _erc4626;
  }

  /**
   * @return the value of 1 KPKWSTETHV3 token in terms of ETH
   */
  function getRate() external view returns (uint256) {
    return wstETH.getStETHByWstETH(TOKEN.convertToAssets(1e18));
  }
}
"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 10000
    },
    "evmVersion": "cancun",
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
          "metadata",
          "abi"
        ]
      }
    }
  }
}}