MockPermit2

{{
  "language": "Solidity",
  "sources": {
    "src/mocks/MockPermit2.sol": {
      "content": "// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import {IERC20} from "openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";

/// @notice Minimal Permit2 mock for testing
/// @dev Simplified version that skips signature verification for tests
contract MockPermit2 {
    struct TokenPermissions {
        address token;
        uint256 amount;
    }

    struct PermitTransferFrom {
        TokenPermissions permitted;
        uint256 nonce;
        uint256 deadline;
    }

    struct SignatureTransferDetails {
        address to;
        uint256 requestedAmount;
    }

    mapping(address => mapping(uint256 => bool)) public usedNonces;

    function permitTransferFrom(
        PermitTransferFrom calldata permit,
        SignatureTransferDetails calldata transferDetails,
        address owner,
        bytes calldata // signature - ignored in mock
    ) external {
        require(block.timestamp <= permit.deadline, "expired");
        require(!usedNonces[owner][permit.nonce], "nonce used");
        require(transferDetails.requestedAmount <= permit.permitted.amount, "amount exceeds permit");

        usedNonces[owner][permit.nonce] = true;

        // Transfer tokens from owner to recipient
        require(
            IERC20(permit.permitted.token).transferFrom(owner, transferDetails.to, transferDetails.requestedAmount),
            "transfer failed"
        );
    }
}"
    },
    "lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.4.0) (token/ERC20/IERC20.sol)

pragma solidity >=0.4.16;

/**
 * @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);
}
"
    }
  },
  "settings": {
    "remappings": [
      "openzeppelin-contracts/=lib/openzeppelin-contracts/",
      "forge-std/=lib/forge-std/src/",
      "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
      "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
      "halmos-cheatcodes/=lib/openzeppelin-contracts/lib/halmos-cheatcodes/src/"
    ],
    "optimizer": {
      "enabled": true,
      "runs": 200
    },
    "metadata": {
      "useLiteralContent": false,
      "bytecodeHash": "ipfs",
      "appendCBOR": true
    },
    "outputSelection": {
      "*": {
        "*": [
          "evm.bytecode",
          "evm.deployedBytecode",
          "devdoc",
          "userdoc",
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    "evmVersion": "paris",
    "viaIR": true
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}}