creation_sourcecode: {{
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    "settings": {
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    "sources": {
      "@openzeppelin/contracts/access/AccessControl.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (access/AccessControl.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IAccessControl.sol\";\nimport \"../utils/Context.sol\";\nimport \"../utils/Strings.sol\";\nimport \"../utils/introspection/ERC165.sol\";\n\n/**\n * @dev Contract module that allows children to implement role-based access\n * control mechanisms. This is a lightweight version that doesn't allow enumerating role\n * members except through off-chain means by accessing the contract event logs. Some\n * applications may benefit from on-chain enumerability, for those cases see\n * {AccessControlEnumerable}.\n *\n * Roles are referred to by their `bytes32` identifier. These should be exposed\n * in the external API and be unique. The best way to achieve this is by\n * using `public constant` hash digests:\n *\n * ```solidity\n * bytes32 public constant MY_ROLE = keccak256(\"MY_ROLE\");\n * ```\n *\n * Roles can be used to represent a set of permissions. To restrict access to a\n * function call, use {hasRole}:\n *\n * ```solidity\n * function foo() public {\n *     require(hasRole(MY_ROLE, msg.sender));\n *     ...\n * }\n * ```\n *\n * Roles can be granted and revoked dynamically via the {grantRole} and\n * {revokeRole} functions. Each role has an associated admin role, and only\n * accounts that have a role's admin role can call {grantRole} and {revokeRole}.\n *\n * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means\n * that only accounts with this role will be able to grant or revoke other\n * roles. More complex role relationships can be created by using\n * {_setRoleAdmin}.\n *\n * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to\n * grant and revoke this role. Extra precautions should be taken to secure\n * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}\n * to enforce additional security measures for this role.\n */\nabstract contract AccessControl is Context, IAccessControl, ERC165 {\n    struct RoleData {\n        mapping(address => bool) members;\n        bytes32 adminRole;\n    }\n\n    mapping(bytes32 => RoleData) private _roles;\n\n    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;\n\n    /**\n     * @dev Modifier that checks that an account has a specific role. Reverts\n     * with a standardized message including the required role.\n     *\n     * The format of the revert reason is given by the following regular expression:\n     *\n     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/\n     *\n     * _Available since v4.1._\n     */\n    modifier onlyRole(bytes32 role) {\n        _checkRole(role);\n        _;\n    }\n\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);\n    }\n\n    /**\n     * @dev Returns `true` if `account` has been granted `role`.\n     */\n    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {\n        return _roles[role].members[account];\n    }\n\n    /**\n     * @dev Revert with a standard message if `_msgSender()` is missing `role`.\n     * Overriding this function changes the behavior of the {onlyRole} modifier.\n     *\n     * Format of the revert message is described in {_checkRole}.\n     *\n     * _Available since v4.6._\n     */\n    function _checkRole(bytes32 role) internal view virtual {\n        _checkRole(role, _msgSender());\n    }\n\n    /**\n     * @dev Revert with a standard message if `account` is missing `role`.\n     *\n     * The format of the revert reason is given by the following regular expression:\n     *\n     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/\n     */\n    function _checkRole(bytes32 role, address account) internal view virtual {\n        if (!hasRole(role, account)) {\n            revert(\n                string(\n                    abi.encodePacked(\n                        \"AccessControl: account \",\n                        Strings.toHexString(account),\n                        \" is missing role \",\n                        Strings.toHexString(uint256(role), 32)\n                    )\n                )\n            );\n        }\n    }\n\n    /**\n     * @dev Returns the admin role that controls `role`. See {grantRole} and\n     * {revokeRole}.\n     *\n     * To change a role's admin, use {_setRoleAdmin}.\n     */\n    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {\n        return _roles[role].adminRole;\n    }\n\n    /**\n     * @dev Grants `role` to `account`.\n     *\n     * If `account` had not been already granted `role`, emits a {RoleGranted}\n     * event.\n     *\n     * Requirements:\n     *\n     * - the caller must have ``role``'s admin role.\n     *\n     * May emit a {RoleGranted} event.\n     */\n    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {\n        _grantRole(role, account);\n    }\n\n    /**\n     * @dev Revokes `role` from `account`.\n     *\n     * If `account` had been granted `role`, emits a {RoleRevoked} event.\n     *\n     * Requirements:\n     *\n     * - the caller must have ``role``'s admin role.\n     *\n     * May emit a {RoleRevoked} event.\n     */\n    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {\n        _revokeRole(role, account);\n    }\n\n    /**\n     * @dev Revokes `role` from the calling account.\n     *\n     * Roles are often managed via {grantRole} and {revokeRole}: this function's\n     * purpose is to provide a mechanism for accounts to lose their privileges\n     * if they are compromised (such as when a trusted device is misplaced).\n     *\n     * If the calling account had been revoked `role`, emits a {RoleRevoked}\n     * event.\n     *\n     * Requirements:\n     *\n     * - the caller must be `account`.\n     *\n     * May emit a {RoleRevoked} event.\n     */\n    function renounceRole(bytes32 role, address account) public virtual override {\n        require(account == _msgSender(), \"AccessControl: can only renounce roles for self\");\n\n        _revokeRole(role, account);\n    }\n\n    /**\n     * @dev Grants `role` to `account`.\n     *\n     * If `account` had not been already granted `role`, emits a {RoleGranted}\n     * event. Note that unlike {grantRole}, this function doesn't perform any\n     * checks on the calling account.\n     *\n     * May emit a {RoleGranted} event.\n     *\n     * [WARNING]\n     * ====\n     * This function should only be called from the constructor when setting\n     * up the initial roles for the system.\n     *\n     * Using this function in any other way is effectively circumventing the admin\n     * system imposed by {AccessControl}.\n     * ====\n     *\n     * NOTE: This function is deprecated in favor of {_grantRole}.\n     */\n    function _setupRole(bytes32 role, address account) internal virtual {\n        _grantRole(role, account);\n    }\n\n    /**\n     * @dev Sets `adminRole` as ``role``'s admin role.\n     *\n     * Emits a {RoleAdminChanged} event.\n     */\n    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {\n        bytes32 previousAdminRole = getRoleAdmin(role);\n        _roles[role].adminRole = adminRole;\n        emit RoleAdminChanged(role, previousAdminRole, adminRole);\n    }\n\n    /**\n     * @dev Grants `role` to `account`.\n     *\n     * Internal function without access restriction.\n     *\n     * May emit a {RoleGranted} event.\n     */\n    function _grantRole(bytes32 role, address account) internal virtual {\n        if (!hasRole(role, account)) {\n            _roles[role].members[account] = true;\n            emit RoleGranted(role, account, _msgSender());\n        }\n    }\n\n    /**\n     * @dev Revokes `role` from `account`.\n     *\n     * Internal function without access restriction.\n     *\n     * May emit a {RoleRevoked} event.\n     */\n    function _revokeRole(bytes32 role, address account) internal virtual {\n        if (hasRole(role, account)) {\n            _roles[role].members[account] = false;\n            emit RoleRevoked(role, account, _msgSender());\n        }\n    }\n}\n"
      },
      "@openzeppelin/contracts/access/IAccessControl.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev External interface of AccessControl declared to support ERC165 detection.\n */\ninterface IAccessControl {\n    /**\n     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`\n     *\n     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite\n     * {RoleAdminChanged} not being emitted signaling this.\n     *\n     * _Available since v3.1._\n     */\n    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);\n\n    /**\n     * @dev Emitted when `account` is granted `role`.\n     *\n     * `sender` is the account that originated the contract call, an admin role\n     * bearer except when using {AccessControl-_setupRole}.\n     */\n    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);\n\n    /**\n     * @dev Emitted when `account` is revoked `role`.\n     *\n     * `sender` is the account that originated the contract call:\n     *   - if using `revokeRole`, it is the admin role bearer\n     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)\n     */\n    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);\n\n    /**\n     * @dev Returns `true` if `account` has been granted `role`.\n     */\n    function hasRole(bytes32 role, address account) external view returns (bool);\n\n    /**\n     * @dev Returns the admin role that controls `role`. See {grantRole} and\n     * {revokeRole}.\n     *\n     * To change a role's admin, use {AccessControl-_setRoleAdmin}.\n     */\n    function getRoleAdmin(bytes32 role) external view returns (bytes32);\n\n    /**\n     * @dev Grants `role` to `account`.\n     *\n     * If `account` had not been already granted `role`, emits a {RoleGranted}\n     * event.\n     *\n     * Requirements:\n     *\n     * - the caller must have ``role``'s admin role.\n     */\n    function grantRole(bytes32 role, address account) external;\n\n    /**\n     * @dev Revokes `role` from `account`.\n     *\n     * If `account` had been granted `role`, emits a {RoleRevoked} event.\n     *\n     * Requirements:\n     *\n     * - the caller must have ``role``'s admin role.\n     */\n    function revokeRole(bytes32 role, address account) external;\n\n    /**\n     * @dev Revokes `role` from the calling account.\n     *\n     * Roles are often managed via {grantRole} and {revokeRole}: this function's\n     * purpose is to provide a mechanism for accounts to lose their privileges\n     * if they are compromised (such as when a trusted device is misplaced).\n     *\n     * If the calling account had been granted `role`, emits a {RoleRevoked}\n     * event.\n     *\n     * Requirements:\n     *\n     * - the caller must be `account`.\n     */\n    function renounceRole(bytes32 role, address account) external;\n}\n"
      },
      "@openzeppelin/contracts/token/ERC20/ERC20.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20.sol\";\nimport \"./extensions/IERC20Metadata.sol\";\nimport \"../../utils/Context.sol\";\n\n/**\n * @dev Implementation of the {IERC20} interface.\n *\n * This implementation is agnostic to the way tokens are created. This means\n * that a supply mechanism has to be added in a derived contract using {_mint}.\n * For a generic mechanism see {ERC20PresetMinterPauser}.\n *\n * TIP: For a detailed writeup see our guide\n * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\n *\n * The default value of {decimals} is 18. To change this, you should override\n * this function so it returns a different value.\n *\n * We have followed general OpenZeppelin Contracts guidelines: functions revert\n * instead returning `false` on failure. This behavior is nonetheless\n * conventional and does not conflict with the expectations of ERC20\n * applications.\n *\n * Additionally, an {Approval} event is emitted on calls to {transferFrom}.\n * This allows applications to reconstruct the allowance for all accounts just\n * by listening to said events. Other implementations of the EIP may not emit\n * these events, as it isn't required by the specification.\n *\n * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}\n * functions have been added to mitigate the well-known issues around setting\n * allowances. See {IERC20-approve}.\n */\ncontract ERC20 is Context, IERC20, IERC20Metadata {\n    mapping(address => uint256) private _balances;\n\n    mapping(address => mapping(address => uint256)) private _allowances;\n\n    uint256 private _totalSupply;\n\n    string private _name;\n    string private _symbol;\n\n    /**\n     * @dev Sets the values for {name} and {symbol}.\n     *\n     * All two of these values are immutable: they can only be set once during\n     * construction.\n     */\n    constructor(string memory name_, string memory symbol_) {\n        _name = name_;\n        _symbol = symbol_;\n    }\n\n    /**\n     * @dev Returns the name of the token.\n     */\n    function name() public view virtual override returns (string memory) {\n        return _name;\n    }\n\n    /**\n     * @dev Returns the symbol of the token, usually a shorter version of the\n     * name.\n     */\n    function symbol() public view virtual override returns (string memory) {\n        return _symbol;\n    }\n\n    /**\n     * @dev Returns the number of decimals used to get its user representation.\n     * For example, if `decimals` equals `2`, a balance of `505` tokens should\n     * be displayed to a user as `5.05` (`505 / 10 ** 2`).\n     *\n     * Tokens usually opt for a value of 18, imitating the relationship between\n     * Ether and Wei. This is the default value returned by this function, unless\n     * it's overridden.\n     *\n     * NOTE: This information is only used for _display_ purposes: it in\n     * no way affects any of the arithmetic of the contract, including\n     * {IERC20-balanceOf} and {IERC20-transfer}.\n     */\n    function decimals() public view virtual override returns (uint8) {\n        return 18;\n    }\n\n    /**\n     * @dev See {IERC20-totalSupply}.\n     */\n    function totalSupply() public view virtual override returns (uint256) {\n        return _totalSupply;\n    }\n\n    /**\n     * @dev See {IERC20-balanceOf}.\n     */\n    function balanceOf(address account) public view virtual override returns (uint256) {\n        return _balances[account];\n    }\n\n    /**\n     * @dev See {IERC20-transfer}.\n     *\n     * Requirements:\n     *\n     * - `to` cannot be the zero address.\n     * - the caller must have a balance of at least `amount`.\n     */\n    function transfer(address to, uint256 amount) public virtual override returns (bool) {\n        address owner = _msgSender();\n        _transfer(owner, to, amount);\n        return true;\n    }\n\n    /**\n     * @dev See {IERC20-allowance}.\n     */\n    function allowance(address owner, address spender) public view virtual override returns (uint256) {\n        return _allowances[owner][spender];\n    }\n\n    /**\n     * @dev See {IERC20-approve}.\n     *\n     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on\n     * `transferFrom`. This is semantically equivalent to an infinite approval.\n     *\n     * Requirements:\n     *\n     * - `spender` cannot be the zero address.\n     */\n    function approve(address spender, uint256 amount) public virtual override returns (bool) {\n        address owner = _msgSender();\n        _approve(owner, spender, amount);\n        return true;\n    }\n\n    /**\n     * @dev See {IERC20-transferFrom}.\n     *\n     * Emits an {Approval} event indicating the updated allowance. This is not\n     * required by the EIP. See the note at the beginning of {ERC20}.\n     *\n     * NOTE: Does not update the allowance if the current allowance\n     * is the maximum `uint256`.\n     *\n     * Requirements:\n     *\n     * - `from` and `to` cannot be the zero address.\n     * - `from` must have a balance of at least `amount`.\n     * - the caller must have allowance for ``from``'s tokens of at least\n     * `amount`.\n     */\n    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {\n        address spender = _msgSender();\n        _spendAllowance(from, spender, amount);\n        _transfer(from, to, amount);\n        return true;\n    }\n\n    /**\n     * @dev Atomically increases the allowance granted to `spender` by the caller.\n     *\n     * This is an alternative to {approve} that can be used as a mitigation for\n     * problems described in {IERC20-approve}.\n     *\n     * Emits an {Approval} event indicating the updated allowance.\n     *\n     * Requirements:\n     *\n     * - `spender` cannot be the zero address.\n     */\n    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {\n        address owner = _msgSender();\n        _approve(owner, spender, allowance(owner, spender) + addedValue);\n        return true;\n    }\n\n    /**\n     * @dev Atomically decreases the allowance granted to `spender` by the caller.\n     *\n     * This is an alternative to {approve} that can be used as a mitigation for\n     * problems described in {IERC20-approve}.\n     *\n     * Emits an {Approval} event indicating the updated allowance.\n     *\n     * Requirements:\n     *\n     * - `spender` cannot be the zero address.\n     * - `spender` must have allowance for the caller of at least\n     * `subtractedValue`.\n     */\n    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {\n        address owner = _msgSender();\n        uint256 currentAllowance = allowance(owner, spender);\n        require(currentAllowance >= subtractedValue, \"ERC20: decreased allowance below zero\");\n        unchecked {\n            _approve(owner, spender, currentAllowance - subtractedValue);\n        }\n\n        return true;\n    }\n\n    /**\n     * @dev Moves `amount` of tokens from `from` to `to`.\n     *\n     * This internal function is equivalent to {transfer}, and can be used to\n     * e.g. implement automatic token fees, slashing mechanisms, etc.\n     *\n     * Emits a {Transfer} event.\n     *\n     * Requirements:\n     *\n     * - `from` cannot be the zero address.\n     * - `to` cannot be the zero address.\n     * - `from` must have a balance of at least `amount`.\n     */\n    function _transfer(address from, address to, uint256 amount) internal virtual {\n        require(from != address(0), \"ERC20: transfer from the zero address\");\n        require(to != address(0), \"ERC20: transfer to the zero address\");\n\n        _beforeTokenTransfer(from, to, amount);\n\n        uint256 fromBalance = _balances[from];\n        require(fromBalance >= amount, \"ERC20: transfer amount exceeds balance\");\n        unchecked {\n            _balances[from] = fromBalance - amount;\n            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by\n            // decrementing then incrementing.\n            _balances[to] += amount;\n        }\n\n        emit Transfer(from, to, amount);\n\n        _afterTokenTransfer(from, to, amount);\n    }\n\n    /** @dev Creates `amount` tokens and assigns them to `account`, increasing\n     * the total supply.\n     *\n     * Emits a {Transfer} event with `from` set to the zero address.\n     *\n     * Requirements:\n     *\n     * - `account` cannot be the zero address.\n     */\n    function _mint(address account, uint256 amount) internal virtual {\n        require(account != address(0), \"ERC20: mint to the zero address\");\n\n        _beforeTokenTransfer(address(0), account, amount);\n\n        _totalSupply += amount;\n        unchecked {\n            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.\n            _balances[account] += amount;\n        }\n        emit Transfer(address(0), account, amount);\n\n        _afterTokenTransfer(address(0), account, amount);\n    }\n\n    /**\n     * @dev Destroys `amount` tokens from `account`, reducing the\n     * total supply.\n     *\n     * Emits a {Transfer} event with `to` set to the zero address.\n     *\n     * Requirements:\n     *\n     * - `account` cannot be the zero address.\n     * - `account` must have at least `amount` tokens.\n     */\n    function _burn(address account, uint256 amount) internal virtual {\n        require(account != address(0), \"ERC20: burn from the zero address\");\n\n        _beforeTokenTransfer(account, address(0), amount);\n\n        uint256 accountBalance = _balances[account];\n        require(accountBalance >= amount, \"ERC20: burn amount exceeds balance\");\n        unchecked {\n            _balances[account] = accountBalance - amount;\n            // Overflow not possible: amount <= accountBalance <= totalSupply.\n            _totalSupply -= amount;\n        }\n\n        emit Transfer(account, address(0), amount);\n\n        _afterTokenTransfer(account, address(0), amount);\n    }\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.\n     *\n     * This internal function is equivalent to `approve`, and can be used to\n     * e.g. set automatic allowances for certain subsystems, etc.\n     *\n     * Emits an {Approval} event.\n     *\n     * Requirements:\n     *\n     * - `owner` cannot be the zero address.\n     * - `spender` cannot be the zero address.\n     */\n    function _approve(address owner, address spender, uint256 amount) internal virtual {\n        require(owner != address(0), \"ERC20: approve from the zero address\");\n        require(spender != address(0), \"ERC20: approve to the zero address\");\n\n        _allowances[owner][spender] = amount;\n        emit Approval(owner, spender, amount);\n    }\n\n    /**\n     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.\n     *\n     * Does not update the allowance amount in case of infinite allowance.\n     * Revert if not enough allowance is available.\n     *\n     * Might emit an {Approval} event.\n     */\n    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {\n        uint256 currentAllowance = allowance(owner, spender);\n        if (currentAllowance != type(uint256).max) {\n            require(currentAllowance >= amount, \"ERC20: insufficient allowance\");\n            unchecked {\n                _approve(owner, spender, currentAllowance - amount);\n            }\n        }\n    }\n\n    /**\n     * @dev Hook that is called before any transfer of tokens. This includes\n     * minting and burning.\n     *\n     * Calling conditions:\n     *\n     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n     * will be transferred to `to`.\n     * - when `from` is zero, `amount` tokens will be minted for `to`.\n     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.\n     * - `from` and `to` are never both zero.\n     *\n     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n     */\n    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}\n\n    /**\n     * @dev Hook that is called after any transfer of tokens. This includes\n     * minting and burning.\n     *\n     * Calling conditions:\n     *\n     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens\n     * has been transferred to `to`.\n     * - when `from` is zero, `amount` tokens have been minted for `to`.\n     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.\n     * - `from` and `to` are never both zero.\n     *\n     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].\n     */\n    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}\n}\n"
      },
      "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n    /**\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\n     * another (`to`).\n     *\n     * Note that `value` may be zero.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 value);\n\n    /**\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n     * a call to {approve}. `value` is the new allowance.\n     */\n    event Approval(address indexed owner, address indexed spender, uint256 value);\n\n    /**\n     * @dev Returns the amount of tokens in existence.\n     */\n    function totalSupply() external view returns (uint256);\n\n    /**\n     * @dev Returns the amount of tokens owned by `account`.\n     */\n    function balanceOf(address account) external view returns (uint256);\n\n    /**\n     * @dev Moves `amount` tokens from the caller's account to `to`.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transfer(address to, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Returns the remaining number of tokens that `spender` will be\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\n     * zero by default.\n     *\n     * This value changes when {approve} or {transferFrom} are called.\n     */\n    function allowance(address owner, address spender) external view returns (uint256);\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\n     * that someone may use both the old and the new allowance by unfortunate\n     * transaction ordering. One possible solution to mitigate this race\n     * condition is to first reduce the spender's allowance to 0 and set the\n     * desired value afterwards:\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address spender, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Moves `amount` tokens from `from` to `to` using the\n     * allowance mechanism. `amount` is then deducted from the caller's\n     * allowance.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(address from, address to, uint256 amount) external returns (bool);\n}\n"
      },
      "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20Metadata is IERC20 {\n    /**\n     * @dev Returns the name of the token.\n     */\n    function name() external view returns (string memory);\n\n    /**\n     * @dev Returns the symbol of the token.\n     */\n    function symbol() external view returns (string memory);\n\n    /**\n     * @dev Returns the decimals places of the token.\n     */\n    function decimals() external view returns (uint8);\n}\n"
      },
      "@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/IERC20Permit.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in\n * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].\n *\n * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by\n * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't\n * need to send a transaction, and thus is not required to hold Ether at all.\n *\n * ==== Security Considerations\n *\n * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature\n * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be\n * considered as an intention to spend the allowance in any specific way. The second is that because permits have\n * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should\n * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be\n * generally recommended is:\n *\n * ```solidity\n * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {\n *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}\n *     doThing(..., value);\n * }\n *\n * function doThing(..., uint256 value) public {\n *     token.safeTransferFrom(msg.sender, address(this), value);\n *     ...\n * }\n * ```\n *\n * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of\n * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also\n * {SafeERC20-safeTransferFrom}).\n *\n * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so\n * contracts should have entry points that don't rely on permit.\n */\ninterface IERC20Permit {\n    /**\n     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,\n     * given ``owner``'s signed approval.\n     *\n     * IMPORTANT: The same issues {IERC20-approve} has related to transaction\n     * ordering also apply here.\n     *\n     * Emits an {Approval} event.\n     *\n     * Requirements:\n     *\n     * - `spender` cannot be the zero address.\n     * - `deadline` must be a timestamp in the future.\n     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`\n     * over the EIP712-formatted function arguments.\n     * - the signature must use ``owner``'s current nonce (see {nonces}).\n     *\n     * For more information on the signature format, see the\n     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP\n     * section].\n     *\n     * CAUTION: See Security Considerations above.\n     */\n    function permit(\n        address owner,\n        address spender,\n        uint256 value,\n        uint256 deadline,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) external;\n\n    /**\n     * @dev Returns the current nonce for `owner`. This value must be\n     * included whenever a signature is generated for {permit}.\n     *\n     * Every successful call to {permit} increases ``owner``'s nonce by one. This\n     * prevents a signature from being used multiple times.\n     */\n    function nonces(address owner) external view returns (uint256);\n\n    /**\n     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.\n     */\n    // solhint-disable-next-line func-name-mixedcase\n    function DOMAIN_SEPARATOR() external view returns (bytes32);\n}\n"
      },
      "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\nimport \"../extensions/IERC20Permit.sol\";\nimport \"../../../utils/Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n    using Address for address;\n\n    /**\n     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,\n     * non-reverting calls are assumed to be successful.\n     */\n    function safeTransfer(IERC20 token, address to, uint256 value) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n    }\n\n    /**\n     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the\n     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.\n     */\n    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n    }\n\n    /**\n     * @dev Deprecated. This function has issues similar to the ones found in\n     * {IERC20-approve}, and its usage is discouraged.\n     *\n     * Whenever possible, use {safeIncreaseAllowance} and\n     * {safeDecreaseAllowance} instead.\n     */\n    function safeApprove(IERC20 token, address spender, uint256 value) internal {\n        // safeApprove should only be called when setting an initial allowance,\n        // or when resetting it to zero. To increase and decrease it, use\n        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n        require(\n            (value == 0) || (token.allowance(address(this), spender) == 0),\n            \"SafeERC20: approve from non-zero to non-zero allowance\"\n        );\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n    }\n\n    /**\n     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,\n     * non-reverting calls are assumed to be successful.\n     */\n    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n        uint256 oldAllowance = token.allowance(address(this), spender);\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));\n    }\n\n    /**\n     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,\n     * non-reverting calls are assumed to be successful.\n     */\n    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n        unchecked {\n            uint256 oldAllowance = token.allowance(address(this), spender);\n            require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));\n        }\n    }\n\n    /**\n     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,\n     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval\n     * to be set to zero before setting it to a non-zero value, such as USDT.\n     */\n    function forceApprove(IERC20 token, address spender, uint256 value) internal {\n        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);\n\n        if (!_callOptionalReturnBool(token, approvalCall)) {\n            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));\n            _callOptionalReturn(token, approvalCall);\n        }\n    }\n\n    /**\n     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.\n     * Revert on invalid signature.\n     */\n    function safePermit(\n        IERC20Permit token,\n        address owner,\n        address spender,\n        uint256 value,\n        uint256 deadline,\n        uint8 v,\n        bytes32 r,\n        bytes32 s\n    ) internal {\n        uint256 nonceBefore = token.nonces(owner);\n        token.permit(owner, spender, value, deadline, v, r, s);\n        uint256 nonceAfter = token.nonces(owner);\n        require(nonceAfter == nonceBefore + 1, \"SafeERC20: permit did not succeed\");\n    }\n\n    /**\n     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n     * on the return value: the return value is optional (but if data is returned, it must not be false).\n     * @param token The token targeted by the call.\n     * @param data The call data (encoded using abi.encode or one of its variants).\n     */\n    function _callOptionalReturn(IERC20 token, bytes memory data) private {\n        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that\n        // the target address contains contract code and also asserts for success in the low-level call.\n\n        bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n        require(returndata.length == 0 || abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n    }\n\n    /**\n     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n     * on the return value: the return value is optional (but if data is returned, it must not be false).\n     * @param token The token targeted by the call.\n     * @param data The call data (encoded using abi.encode or one of its variants).\n     *\n     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.\n     */\n    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {\n        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false\n        // and not revert is the subcall reverts.\n\n        (bool success, bytes memory returndata) = address(token).call(data);\n        return\n            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));\n    }\n}\n"
      },
      "@openzeppelin/contracts/utils/Address.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n    /**\n     * @dev Returns true if `account` is a contract.\n     *\n     * [IMPORTANT]\n     * ====\n     * It is unsafe to assume that an address for which this function returns\n     * false is an externally-owned account (EOA) and not a contract.\n     *\n     * Among others, `isContract` will return false for the following\n     * types of addresses:\n     *\n     *  - an externally-owned account\n     *  - a contract in construction\n     *  - an address where a contract will be created\n     *  - an address where a contract lived, but was destroyed\n     *\n     * Furthermore, `isContract` will also return true if the target contract within\n     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,\n     * which only has an effect at the end of a transaction.\n     * ====\n     *\n     * [IMPORTANT]\n     * ====\n     * You shouldn't rely on `isContract` to protect against flash loan attacks!\n     *\n     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets\n     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract\n     * constructor.\n     * ====\n     */\n    function isContract(address account) internal view returns (bool) {\n        // This method relies on extcodesize/address.code.length, which returns 0\n        // for contracts in construction, since the code is only stored at the end\n        // of the constructor execution.\n\n        return account.code.length > 0;\n    }\n\n    /**\n     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n     * `recipient`, forwarding all available gas and reverting on errors.\n     *\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\n     * imposed by `transfer`, making them unable to receive funds via\n     * `transfer`. {sendValue} removes this limitation.\n     *\n     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n     *\n     * IMPORTANT: because control is transferred to `recipient`, care must be\n     * taken to not create reentrancy vulnerabilities. Consider using\n     * {ReentrancyGuard} or the\n     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n     */\n    function sendValue(address payable recipient, uint256 amount) internal {\n        require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n        (bool success, ) = recipient.call{value: amount}(\"\");\n        require(success, \"Address: unable to send value, recipient may have reverted\");\n    }\n\n    /**\n     * @dev Performs a Solidity function call using a low level `call`. A\n     * plain `call` is an unsafe replacement for a function call: use this\n     * function instead.\n     *\n     * If `target` reverts with a revert reason, it is bubbled up by this\n     * function (like regular Solidity function calls).\n     *\n     * Returns the raw returned data. To convert to the expected return value,\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n     *\n     * Requirements:\n     *\n     * - `target` must be a contract.\n     * - calling `target` with `data` must not revert.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, \"Address: low-level call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n     * `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but also transferring `value` wei to `target`.\n     *\n     * Requirements:\n     *\n     * - the calling contract must have an ETH balance of at least `value`.\n     * - the called Solidity function must be `payable`.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(address(this).balance >= value, \"Address: insufficient balance for call\");\n        (bool success, bytes memory returndata) = target.call{value: value}(data);\n        return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n        return functionStaticCall(target, data, \"Address: low-level static call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        (bool success, bytes memory returndata) = target.staticcall(data);\n        return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        (bool success, bytes memory returndata) = target.delegatecall(data);\n        return verifyCallResultFromTarget(target, success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling\n     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.\n     *\n     * _Available since v4.8._\n     */\n    function verifyCallResultFromTarget(\n        address target,\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        if (success) {\n            if (returndata.length == 0) {\n                // only check isContract if the call was successful and the return data is empty\n                // otherwise we already know that it was a contract\n                require(isContract(target), \"Address: call to non-contract\");\n            }\n            return returndata;\n        } else {\n            _revert(returndata, errorMessage);\n        }\n    }\n\n    /**\n     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the\n     * revert reason or using the provided one.\n     *\n     * _Available since v4.3._\n     */\n    function verifyCallResult(\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal pure returns (bytes memory) {\n        if (success) {\n            return returndata;\n        } else {\n            _revert(returndata, errorMessage);\n        }\n    }\n\n    function _revert(bytes memory returndata, string memory errorMessage) private pure {\n        // Look for revert reason and bubble it up if present\n        if (returndata.length > 0) {\n            // The easiest way to bubble the revert reason is using memory via assembly\n            /// @solidity memory-safe-assembly\n            assembly {\n                let returndata_size := mload(returndata)\n                revert(add(32, returndata), returndata_size)\n            }\n        } else {\n            revert(errorMessage);\n        }\n    }\n}\n"
      },
      "@openzeppelin/contracts/utils/Context.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n    function _msgSender() internal view virtual returns (address) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view virtual returns (bytes calldata) {\n        return msg.data;\n    }\n\n    function _contextSuffixLength() internal view virtual returns (uint256) {\n        return 0;\n    }\n}\n"
      },
      "@openzeppelin/contracts/utils/Strings.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./math/Math.sol\";\nimport \"./math/SignedMath.sol\";\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n    bytes16 private constant _SYMBOLS = \"0123456789abcdef\";\n    uint8 private constant _ADDRESS_LENGTH = 20;\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n     */\n    function toString(uint256 value) internal pure returns (string memory) {\n        unchecked {\n            uint256 length = Math.log10(value) + 1;\n            string memory buffer = new string(length);\n            uint256 ptr;\n            /// @solidity memory-safe-assembly\n            assembly {\n                ptr := add(buffer, add(32, length))\n            }\n            while (true) {\n                ptr--;\n                /// @solidity memory-safe-assembly\n                assembly {\n                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))\n                }\n                value /= 10;\n                if (value == 0) break;\n            }\n            return buffer;\n        }\n    }\n\n    /**\n     * @dev Converts a `int256` to its ASCII `string` decimal representation.\n     */\n    function toString(int256 value) internal pure returns (string memory) {\n        return string(abi.encodePacked(value < 0 ? \"-\" : \"\", toString(SignedMath.abs(value))));\n    }\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n     */\n    function toHexString(uint256 value) internal pure returns (string memory) {\n        unchecked {\n            return toHexString(value, Math.log256(value) + 1);\n        }\n    }\n\n    /**\n     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n     */\n    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n        bytes memory buffer = new bytes(2 * length + 2);\n        buffer[0] = \"0\";\n        buffer[1] = \"x\";\n        for (uint256 i = 2 * length + 1; i > 1; --i) {\n            buffer[i] = _SYMBOLS[value & 0xf];\n            value >>= 4;\n        }\n        require(value == 0, \"Strings: hex length insufficient\");\n        return string(buffer);\n    }\n\n    /**\n     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.\n     */\n    function toHexString(address addr) internal pure returns (string memory) {\n        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);\n    }\n\n    /**\n     * @dev Returns true if the two strings are equal.\n     */\n    function equal(string memory a, string memory b) internal pure returns (bool) {\n        return keccak256(bytes(a)) == keccak256(bytes(b));\n    }\n}\n"
      },
      "@openzeppelin/contracts/utils/introspection/ERC165.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC165.sol\";\n\n/**\n * @dev Implementation of the {IERC165} interface.\n *\n * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check\n * for the additional interface id that will be supported. For example:\n *\n * ```solidity\n * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);\n * }\n * ```\n *\n * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.\n */\nabstract contract ERC165 is IERC165 {\n    /**\n     * @dev See {IERC165-supportsInterface}.\n     */\n    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {\n        return interfaceId == type(IERC165).interfaceId;\n    }\n}\n"
      },
      "@openzeppelin/contracts/utils/introspection/IERC165.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC165 standard, as defined in the\n * https://eips.ethereum.org/EIPS/eip-165[EIP].\n *\n * Implementers can declare support of contract interfaces, which can then be\n * queried by others ({ERC165Checker}).\n *\n * For an implementation, see {ERC165}.\n */\ninterface IERC165 {\n    /**\n     * @dev Returns true if this contract implements the interface defined by\n     * `interfaceId`. See the corresponding\n     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]\n     * to learn more about how these ids are created.\n     *\n     * This function call must use less than 30 000 gas.\n     */\n    function supportsInterface(bytes4 interfaceId) external view returns (bool);\n}\n"
      },
      "@openzeppelin/contracts/utils/math/Math.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Standard math utilities missing in the Solidity language.\n */\nlibrary Math {\n    enum Rounding {\n        Down, // Toward negative infinity\n        Up, // Toward infinity\n        Zero // Toward zero\n    }\n\n    /**\n     * @dev Returns the largest of two numbers.\n     */\n    function max(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a > b ? a : b;\n    }\n\n    /**\n     * @dev Returns the smallest of two numbers.\n     */\n    function min(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a < b ? a : b;\n    }\n\n    /**\n     * @dev Returns the average of two numbers. The result is rounded towards\n     * zero.\n     */\n    function average(uint256 a, uint256 b) internal pure returns (uint256) {\n        // (a + b) / 2 can overflow.\n        return (a & b) + (a ^ b) / 2;\n    }\n\n    /**\n     * @dev Returns the ceiling of the division of two numbers.\n     *\n     * This differs from standard division with `/` in that it rounds up instead\n     * of rounding down.\n     */\n    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {\n        // (a + b - 1) / b can overflow on addition, so we distribute.\n        return a == 0 ? 0 : (a - 1) / b + 1;\n    }\n\n    /**\n     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0\n     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)\n     * with further edits by Uniswap Labs also under MIT license.\n     */\n    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {\n        unchecked {\n            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use\n            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256\n            // variables such that product = prod1 * 2^256 + prod0.\n            uint256 prod0; // Least significant 256 bits of the product\n            uint256 prod1; // Most significant 256 bits of the product\n            assembly {\n                let mm := mulmod(x, y, not(0))\n                prod0 := mul(x, y)\n                prod1 := sub(sub(mm, prod0), lt(mm, prod0))\n            }\n\n            // Handle non-overflow cases, 256 by 256 division.\n            if (prod1 == 0) {\n                // Solidity will revert if denominator == 0, unlike the div opcode on its own.\n                // The surrounding unchecked block does not change this fact.\n                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.\n                return prod0 / denominator;\n            }\n\n            // Make sure the result is less than 2^256. Also prevents denominator == 0.\n            require(denominator > prod1, \"Math: mulDiv overflow\");\n\n            ///////////////////////////////////////////////\n            // 512 by 256 division.\n            ///////////////////////////////////////////////\n\n            // Make division exact by subtracting the remainder from [prod1 prod0].\n            uint256 remainder;\n            assembly {\n                // Compute remainder using mulmod.\n                remainder := mulmod(x, y, denominator)\n\n                // Subtract 256 bit number from 512 bit number.\n                prod1 := sub(prod1, gt(remainder, prod0))\n                prod0 := sub(prod0, remainder)\n            }\n\n            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.\n            // See https://cs.stackexchange.com/q/138556/92363.\n\n            // Does not overflow because the denominator cannot be zero at this stage in the function.\n            uint256 twos = denominator & (~denominator + 1);\n            assembly {\n                // Divide denominator by twos.\n                denominator := div(denominator, twos)\n\n                // Divide [prod1 prod0] by twos.\n                prod0 := div(prod0, twos)\n\n                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.\n                twos := add(div(sub(0, twos), twos), 1)\n            }\n\n            // Shift in bits from prod1 into prod0.\n            prod0 |= prod1 * twos;\n\n            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such\n            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for\n            // four bits. That is, denominator * inv = 1 mod 2^4.\n            uint256 inverse = (3 * denominator) ^ 2;\n\n            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works\n            // in modular arithmetic, doubling the correct bits in each step.\n            inverse *= 2 - denominator * inverse; // inverse mod 2^8\n            inverse *= 2 - denominator * inverse; // inverse mod 2^16\n            inverse *= 2 - denominator * inverse; // inverse mod 2^32\n            inverse *= 2 - denominator * inverse; // inverse mod 2^64\n            inverse *= 2 - denominator * inverse; // inverse mod 2^128\n            inverse *= 2 - denominator * inverse; // inverse mod 2^256\n\n            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.\n            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is\n            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1\n            // is no longer required.\n            result = prod0 * inverse;\n            return result;\n        }\n    }\n\n    /**\n     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.\n     */\n    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {\n        uint256 result = mulDiv(x, y, denominator);\n        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {\n            result += 1;\n        }\n        return result;\n    }\n\n    /**\n     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.\n     *\n     * Inspired by Henry S. Warren, Jr.'s \"Hacker's Delight\" (Chapter 11).\n     */\n    function sqrt(uint256 a) internal pure returns (uint256) {\n        if (a == 0) {\n            return 0;\n        }\n\n        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.\n        //\n        // We know that the \"msb\" (most significant bit) of our target number `a` is a power of 2 such that we have\n        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.\n        //\n        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`\n        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`\n        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`\n        //\n        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.\n        uint256 result = 1 << (log2(a) >> 1);\n\n        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,\n        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at\n        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision\n        // into the expected uint128 result.\n        unchecked {\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            result = (result + a / result) >> 1;\n            return min(result, a / result);\n        }\n    }\n\n    /**\n     * @notice Calculates sqrt(a), following the selected rounding direction.\n     */\n    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {\n        unchecked {\n            uint256 result = sqrt(a);\n            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);\n        }\n    }\n\n    /**\n     * @dev Return the log in base 2, rounded down, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log2(uint256 value) internal pure returns (uint256) {\n        uint256 result = 0;\n        unchecked {\n            if (value >> 128 > 0) {\n                value >>= 128;\n                result += 128;\n            }\n            if (value >> 64 > 0) {\n                value >>= 64;\n                result += 64;\n            }\n            if (value >> 32 > 0) {\n                value >>= 32;\n                result += 32;\n            }\n            if (value >> 16 > 0) {\n                value >>= 16;\n                result += 16;\n            }\n            if (value >> 8 > 0) {\n                value >>= 8;\n                result += 8;\n            }\n            if (value >> 4 > 0) {\n                value >>= 4;\n                result += 4;\n            }\n            if (value >> 2 > 0) {\n                value >>= 2;\n                result += 2;\n            }\n            if (value >> 1 > 0) {\n                result += 1;\n            }\n        }\n        return result;\n    }\n\n    /**\n     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {\n        unchecked {\n            uint256 result = log2(value);\n            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);\n        }\n    }\n\n    /**\n     * @dev Return the log in base 10, rounded down, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log10(uint256 value) internal pure returns (uint256) {\n        uint256 result = 0;\n        unchecked {\n            if (value >= 10 ** 64) {\n                value /= 10 ** 64;\n                result += 64;\n            }\n            if (value >= 10 ** 32) {\n                value /= 10 ** 32;\n                result += 32;\n            }\n            if (value >= 10 ** 16) {\n                value /= 10 ** 16;\n                result += 16;\n            }\n            if (value >= 10 ** 8) {\n                value /= 10 ** 8;\n                result += 8;\n            }\n            if (value >= 10 ** 4) {\n                value /= 10 ** 4;\n                result += 4;\n            }\n            if (value >= 10 ** 2) {\n                value /= 10 ** 2;\n                result += 2;\n            }\n            if (value >= 10 ** 1) {\n                result += 1;\n            }\n        }\n        return result;\n    }\n\n    /**\n     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {\n        unchecked {\n            uint256 result = log10(value);\n            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);\n        }\n    }\n\n    /**\n     * @dev Return the log in base 256, rounded down, of a positive value.\n     * Returns 0 if given 0.\n     *\n     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.\n     */\n    function log256(uint256 value) internal pure returns (uint256) {\n        uint256 result = 0;\n        unchecked {\n            if (value >> 128 > 0) {\n                value >>= 128;\n                result += 16;\n            }\n            if (value >> 64 > 0) {\n                value >>= 64;\n                result += 8;\n            }\n            if (value >> 32 > 0) {\n                value >>= 32;\n                result += 4;\n            }\n            if (value >> 16 > 0) {\n                value >>= 16;\n                result += 2;\n            }\n            if (value >> 8 > 0) {\n                result += 1;\n            }\n        }\n        return result;\n    }\n\n    /**\n     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.\n     * Returns 0 if given 0.\n     */\n    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {\n        unchecked {\n            uint256 result = log256(value);\n            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);\n        }\n    }\n}\n"
      },
      "@openzeppelin/contracts/utils/math/SignedMath.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Standard signed math utilities missing in the Solidity language.\n */\nlibrary SignedMath {\n    /**\n     * @dev Returns the largest of two signed numbers.\n     */\n    function max(int256 a, int256 b) internal pure returns (int256) {\n        return a > b ? a : b;\n    }\n\n    /**\n     * @dev Returns the smallest of two signed numbers.\n     */\n    function min(int256 a, int256 b) internal pure returns (int256) {\n        return a < b ? a : b;\n    }\n\n    /**\n     * @dev Returns the average of two signed numbers without overflow.\n     * The result is rounded towards zero.\n     */\n    function average(int256 a, int256 b) internal pure returns (int256) {\n        // Formula from the book \"Hacker's Delight\"\n        int256 x = (a & b) + ((a ^ b) >> 1);\n        return x + (int256(uint256(x) >> 255) & (a ^ b));\n    }\n\n    /**\n     * @dev Returns the absolute unsigned value of a signed value.\n     */\n    function abs(int256 n) internal pure returns (uint256) {\n        unchecked {\n            // must be unchecked in order to support `n = type(int256).min`\n            return uint256(n >= 0 ? n : -n);\n        }\n    }\n}\n"
      },
      "@openzeppelin/contracts/utils/structs/EnumerableSet.sol": {
        "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.9.0) (utils/structs/EnumerableSet.sol)\n// This file was procedurally generated from scripts/generate/templates/EnumerableSet.js.\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Library for managing\n * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive\n * types.\n *\n * Sets have the following properties:\n *\n * - Elements are added, removed, and checked for existence in constant time\n * (O(1)).\n * - Elements are enumerated in O(n). No guarantees are made on the ordering.\n *\n * ```solidity\n * contract Example {\n *     // Add the library methods\n *     using EnumerableSet for EnumerableSet.AddressSet;\n *\n *     // Declare a set state variable\n *     EnumerableSet.AddressSet private mySet;\n * }\n * ```\n *\n * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)\n * and `uint256` (`UintSet`) are supported.\n *\n * [WARNING]\n * ====\n * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure\n * unusable.\n * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info.\n *\n * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an\n * array of EnumerableSet.\n * ====\n */\nlibrary EnumerableSet {\n    // To implement this library for multiple types with as little code\n    // repetition as possible, we write it in terms of a generic Set type with\n    // bytes32 values.\n    // The Set implementation uses private functions, and user-facing\n    // implementations (such as AddressSet) are just wrappers around the\n    // underlying Set.\n    // This means that we can only create new EnumerableSets for types that fit\n    // in bytes32.\n\n    struct Set {\n        // Storage of set values\n        bytes32[] _values;\n        // Position of the value in the `values` array, plus 1 because index 0\n        // means a value is not in the set.\n        mapping(bytes32 => uint256) _indexes;\n    }\n\n    /**\n     * @dev Add a value to a set. O(1).\n     *\n     * Returns true if the value was added to the set, that is if it was not\n     * already present.\n     */\n    function _add(Set storage set, bytes32 value) private returns (bool) {\n        if (!_contains(set, value)) {\n            set._values.push(value);\n            // The value is stored at length-1, but we add 1 to all indexes\n            // and use 0 as a sentinel value\n            set._indexes[value] = set._values.length;\n            return true;\n        } else {\n            return false;\n        }\n    }\n\n    /**\n     * @dev Removes a value from a set. O(1).\n     *\n     * Returns true if the value was removed from the set, that is if it was\n     * present.\n     */\n    function _remove(Set storage set, bytes32 value) private returns (bool) {\n        // We read and store the value's index to prevent multiple reads from the same storage slot\n        uint256 valueIndex = set._indexes[value];\n\n        if (valueIndex != 0) {\n            // Equivalent to contains(set, value)\n            // To delete an element from the _values array in O(1), we swap the element to delete with the last one in\n            // the array, and then remove the last element (sometimes called as 'swap and pop').\n            // This modifies the order of the array, as noted in {at}.\n\n            uint256 toDeleteIndex = valueIndex - 1;\n            uint256 lastIndex = set._values.length - 1;\n\n            if (lastIndex != toDeleteIndex) {\n                bytes32 lastValue = set._values[lastIndex];\n\n                // Move the last value to the index where the value to delete is\n                set._values[toDeleteIndex] = lastValue;\n                // Update the index for the moved value\n                set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex\n            }\n\n            // Delete the slot where the moved value was stored\n            set._values.pop();\n\n            // Delete the index for the deleted slot\n            delete set._indexes[value];\n\n            return true;\n        } else {\n            return false;\n        }\n    }\n\n    /**\n     * @dev Returns true if the value is in the set. O(1).\n     */\n    function _contains(Set storage set, bytes32 value) private view returns (bool) {\n        return set._indexes[value] != 0;\n    }\n\n    /**\n     * @dev Returns the number of values on the set. O(1).\n     */\n    function _length(Set storage set) private view returns (uint256) {\n        return set._values.length;\n    }\n\n    /**\n     * @dev Returns the value stored at position `index` in the set. O(1).\n     *\n     * Note that there are no guarantees on the ordering of values inside the\n     * array, and it may change when more values are added or removed.\n     *\n     * Requirements:\n     *\n     * - `index` must be strictly less than {length}.\n     */\n    function _at(Set storage set, uint256 index) private view returns (bytes32) {\n        return set._values[index];\n    }\n\n    /**\n     * @dev Return the entire set in an array\n     *\n     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed\n     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that\n     * this function has an unbounded cost, and using it as part of a state-changing function may render the function\n     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.\n     */\n    function _values(Set storage set) private view returns (bytes32[] memory) {\n        return set._values;\n    }\n\n    // Bytes32Set\n\n    struct Bytes32Set {\n        Set _inner;\n    }\n\n    /**\n     * @dev Add a value to a set. O(1).\n     *\n     * Returns true if the value was added to the set, that is if it was not\n     * already present.\n     */\n    function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {\n        return _add(set._inner, value);\n    }\n\n    /**\n     * @dev Removes a value from a set. O(1).\n     *\n     * Returns true if the value was removed from the set, that is if it was\n     * present.\n     */\n    function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {\n        return _remove(set._inner, value);\n    }\n\n    /**\n     * @dev Returns true if the value is in the set. O(1).\n     */\n    function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {\n        return _contains(set._inner, value);\n    }\n\n    /**\n     * @dev Returns the number of values in the set. O(1).\n     */\n    function length(Bytes32Set storage set) internal view returns (uint256) {\n        return _length(set._inner);\n    }\n\n    /**\n     * @dev Returns the value stored at position `index` in the set. O(1).\n     *\n     * Note that there are no guarantees on the ordering of values inside the\n     * array, and it may change when more values are added or removed.\n     *\n     * Requirements:\n     *\n     * - `index` must be strictly less than {length}.\n     */\n    function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {\n        return _at(set._inner, index);\n    }\n\n    /**\n     * @dev Return the entire set in an array\n     *\n     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed\n     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that\n     * this function has an unbounded cost, and using it as part of a state-changing function may render the function\n     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.\n     */\n    function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {\n        bytes32[] memory store = _values(set._inner);\n        bytes32[] memory result;\n\n        /// @solidity memory-safe-assembly\n        assembly {\n            result := store\n        }\n\n        return result;\n    }\n\n    // AddressSet\n\n    struct AddressSet {\n        Set _inner;\n    }\n\n    /**\n     * @dev Add a value to a set. O(1).\n     *\n     * Returns true if the value was added to the set, that is if it was not\n     * already present.\n     */\n    function add(AddressSet storage set, address value) internal returns (bool) {\n        return _add(set._inner, bytes32(uint256(uint160(value))));\n    }\n\n    /**\n     * @dev Removes a value from a set. O(1).\n     *\n     * Returns true if the value was removed from the set, that is if it was\n     * present.\n     */\n    function remove(AddressSet storage set, address value) internal returns (bool) {\n        return _remove(set._inner, bytes32(uint256(uint160(value))));\n    }\n\n    /**\n     * @dev Returns true if the value is in the set. O(1).\n     */\n    function contains(AddressSet storage set, address value) internal view returns (bool) {\n        return _contains(set._inner, bytes32(uint256(uint160(value))));\n    }\n\n    /**\n     * @dev Returns the number of values in the set. O(1).\n     */\n    function length(AddressSet storage set) internal view returns (uint256) {\n        return _length(set._inner);\n    }\n\n    /**\n     * @dev Returns the value stored at position `index` in the set. O(1).\n     *\n     * Note that there are no guarantees on the ordering of values inside the\n     * array, and it may change when more values are added or removed.\n     *\n     * Requirements:\n     *\n     * - `index` must be strictly less than {length}.\n     */\n    function at(AddressSet storage set, uint256 index) internal view returns (address) {\n        return address(uint160(uint256(_at(set._inner, index))));\n    }\n\n    /**\n     * @dev Return the entire set in an array\n     *\n     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed\n     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that\n     * this function has an unbounded cost, and using it as part of a state-changing function may render the function\n     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.\n     */\n    function values(AddressSet storage set) internal view returns (address[] memory) {\n        bytes32[] memory store = _values(set._inner);\n        address[] memory result;\n\n        /// @solidity memory-safe-assembly\n        assembly {\n            result := store\n        }\n\n        return result;\n    }\n\n    // UintSet\n\n    struct UintSet {\n        Set _inner;\n    }\n\n    /**\n     * @dev Add a value to a set. O(1).\n     *\n     * Returns true if the value was added to the set, that is if it was not\n     * already present.\n     */\n    function add(UintSet storage set, uint256 value) internal returns (bool) {\n        return _add(set._inner, bytes32(value));\n    }\n\n    /**\n     * @dev Removes a value from a set. O(1).\n     *\n     * Returns true if the value was removed from the set, that is if it was\n     * present.\n     */\n    function remove(UintSet storage set, uint256 value) internal returns (bool) {\n        return _remove(set._inner, bytes32(value));\n    }\n\n    /**\n     * @dev Returns true if the value is in the set. O(1).\n     */\n    function contains(UintSet storage set, uint256 value) internal view returns (bool) {\n        return _contains(set._inner, bytes32(value));\n    }\n\n    /**\n     * @dev Returns the number of values in the set. O(1).\n     */\n    function length(UintSet storage set) internal view returns (uint256) {\n        return _length(set._inner);\n    }\n\n    /**\n     * @dev Returns the value stored at position `index` in the set. O(1).\n     *\n     * Note that there are no guarantees on the ordering of values inside the\n     * array, and it may change when more values are added or removed.\n     *\n     * Requirements:\n     *\n     * - `index` must be strictly less than {length}.\n     */\n    function at(UintSet storage set, uint256 index) internal view returns (uint256) {\n        return uint256(_at(set._inner, index));\n    }\n\n    /**\n     * @dev Return the entire set in an array\n     *\n     * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed\n     * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that\n     * this function has an unbounded cost, and using it as part of a state-changing function may render the function\n     * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.\n     */\n    function values(UintSet storage set) internal view returns (uint256[] memory) {\n        bytes32[] memory store = _values(set._inner);\n        uint256[] memory result;\n\n        /// @solidity memory-safe-assembly\n        assembly {\n            result := store\n        }\n\n        return result;\n    }\n}\n"
      },
      "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router01.sol": {
        "content": "pragma solidity >=0.6.2;\n\ninterface IUniswapV2Router01 {\n    function factory() external pure returns (address);\n    function WETH() external pure returns (address);\n\n    function addLiquidity(\n        address tokenA,\n        address tokenB,\n        uint amountADesired,\n        uint amountBDesired,\n        uint amountAMin,\n        uint amountBMin,\n        address to,\n        uint deadline\n    ) external returns (uint amountA, uint amountB, uint liquidity);\n    function addLiquidityETH(\n        address token,\n        uint amountTokenDesired,\n        uint amountTokenMin,\n        uint amountETHMin,\n        address to,\n        uint deadline\n    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);\n    function removeLiquidity(\n        address tokenA,\n        address tokenB,\n        uint liquidity,\n        uint amountAMin,\n        uint amountBMin,\n        address to,\n        uint deadline\n    ) external returns (uint amountA, uint amountB);\n    function removeLiquidityETH(\n        address token,\n        uint liquidity,\n        uint amountTokenMin,\n        uint amountETHMin,\n        address to,\n        uint deadline\n    ) external returns (uint amountToken, uint amountETH);\n    function removeLiquidityWithPermit(\n        address tokenA,\n        address tokenB,\n        uint liquidity,\n        uint amountAMin,\n        uint amountBMin,\n        address to,\n        uint deadline,\n        bool approveMax, uint8 v, bytes32 r, bytes32 s\n    ) external returns (uint amountA, uint amountB);\n    function removeLiquidityETHWithPermit(\n        address token,\n        uint liquidity,\n        uint amountTokenMin,\n        uint amountETHMin,\n        address to,\n        uint deadline,\n        bool approveMax, uint8 v, bytes32 r, bytes32 s\n    ) external returns (uint amountToken, uint amountETH);\n    function swapExactTokensForTokens(\n        uint amountIn,\n        uint amountOutMin,\n        address[] calldata path,\n        address to,\n        uint deadline\n    ) external returns (uint[] memory amounts);\n    function swapTokensForExactTokens(\n        uint amountOut,\n        uint amountInMax,\n        address[] calldata path,\n        address to,\n        uint deadline\n    ) external returns (uint[] memory amounts);\n    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)\n        external\n        payable\n        returns (uint[] memory amounts);\n    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)\n        external\n        returns (uint[] memory amounts);\n    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)\n        external\n        returns (uint[] memory amounts);\n    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)\n        external\n        payable\n        returns (uint[] memory amounts);\n\n    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);\n    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);\n    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);\n    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);\n    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);\n}\n"
      },
      "@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol": {
        "content": "pragma solidity >=0.6.2;\n\nimport './IUniswapV2Router01.sol';\n\ninterface IUniswapV2Router02 is IUniswapV2Router01 {\n    function removeLiquidityETHSupportingFeeOnTransferTokens(\n        address token,\n        uint liquidity,\n        uint amountTokenMin,\n        uint amountETHMin,\n        address to,\n        uint deadline\n    ) external returns (uint amountETH);\n    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(\n        address token,\n        uint liquidity,\n        uint amountTokenMin,\n        uint amountETHMin,\n        address to,\n        uint deadline,\n        bool approveMax, uint8 v, bytes32 r, bytes32 s\n    ) external returns (uint amountETH);\n\n    function swapExactTokensForTokensSupportingFeeOnTransferTokens(\n        uint amountIn,\n        uint amountOutMin,\n        address[] calldata path,\n        address to,\n        uint deadline\n    ) external;\n    function swapExactETHForTokensSupportingFeeOnTransferTokens(\n        uint amountOutMin,\n        address[] calldata path,\n        address to,\n        uint deadline\n    ) external payable;\n    function swapExactTokensForETHSupportingFeeOnTransferTokens(\n        uint amountIn,\n        uint amountOutMin,\n        address[] calldata path,\n        address to,\n        uint deadline\n    ) external;\n}\n"
      },
      "contracts/token-launcher/interfaces/IBuyBackHandler.sol": {
        "content": "// SPDX-License-Identifier: MIT\r\npragma solidity 0.8.23;\r\n\r\nimport { ITokenLauncherLiquidityPoolFactory } from \"./ITokenLauncherLiquidityPoolFactory.sol\";\r\n\r\ninterface IBuyBackHandler {\r\n    // solhint-disable-next-line\r\n    function BUYBACK_CALLER_ROLE() external view returns (bytes32);\r\n\r\n    function buyback(address treasury, ITokenLauncherLiquidityPoolFactory.BuyBackDetails memory buybackDetails) external;\r\n\r\n    /**\r\n     * @dev Grants `role` to `account`.\r\n     *\r\n     * If `account` had not been already granted `role`, emits a {RoleGranted}\r\n     * event.\r\n     *\r\n     * Requirements:\r\n     *\r\n     * - the caller must have ``role``'s admin role.\r\n     */\r\n    function grantRole(bytes32 role, address account) external;\r\n}\r\n"
      },
      "contracts/token-launcher/interfaces/ITokenLauncherCommon.sol": {
        "content": "// SPDX-License-Identifier: MIT\r\npragma solidity 0.8.23;\r\n\r\ninterface ITokenLauncherCommon {\r\n    enum TokenType {\r\n        ERC20,\r\n        ERC721,\r\n        ERC1155\r\n    }\r\n\r\n    enum PaymentMethod {\r\n        NATIVE,\r\n        USD,\r\n        FLOKI\r\n    }\r\n}\r\n"
      },
      "contracts/token-launcher/interfaces/ITokenLauncherERC20.sol": {
        "content": "// SPDX-License-Identifier: MIT\r\npragma solidity 0.8.23;\r\n\r\nimport { ITokenLauncherCommon } from \"./ITokenLauncherCommon.sol\";\r\n\r\ninterface ITokenLauncherERC20 is ITokenLauncherCommon {\r\n    struct FeeDetails {\r\n        uint256 percentage;\r\n        bool onlyOnSwaps;\r\n    }\r\n\r\n    struct Fees {\r\n        FeeDetails transferFee;\r\n        FeeDetails burn;\r\n        FeeDetails reflection;\r\n        FeeDetails buyback;\r\n    }\r\n\r\n    struct CreateErc20Input {\r\n        string name;\r\n        string symbol;\r\n        string logo;\r\n        uint8 decimals;\r\n        uint256 initialSupply;\r\n        uint256 maxSupply;\r\n        address treasury;\r\n        address owner;\r\n        address referrer;\r\n        address tokenStore;\r\n        Fees fees;\r\n        address buybackHandler;\r\n        PaymentMethod paymentMethod;\r\n    }\r\n\r\n    function tokenLauncherStore() external returns (address);\r\n\r\n    function liquidityPoolFactory() external returns (address);\r\n\r\n    function buybackHandler() external returns (address);\r\n\r\n    function createErc20(CreateErc20Input memory input) external payable;\r\n}\r\n"
      },
      "contracts/token-launcher/interfaces/ITokenLauncherLiquidityPoolFactory.sol": {
        "content": "// SPDX-License-Identifier: MIT\r\npragma solidity 0.8.23;\r\n\r\ninterface ITokenLauncherLiquidityPoolFactory {\r\n    struct LiquidityPoolDetails {\r\n        address sourceToken;\r\n        address pairedToken;\r\n        uint256 amountSourceToken;\r\n        uint256 amountPairedToken;\r\n        address routerAddress;\r\n    }\r\n\r\n    struct LockLPDetails {\r\n        uint256 lockLPTokenPercentage;\r\n        uint256 unlockTimestamp;\r\n        address beneficiary;\r\n        bool isVesting;\r\n    }\r\n\r\n    struct BuyBackDetails {\r\n        address pairToken;\r\n        address router;\r\n        uint256 liquidityBasisPoints;\r\n        uint256 priceImpactBasisPoints;\r\n    }\r\n\r\n    struct CreateV2Input {\r\n        address owner;\r\n        address treasury;\r\n        LiquidityPoolDetails liquidityPoolDetails;\r\n        LockLPDetails lockLPDetails;\r\n        BuyBackDetails buybackDetails;\r\n    }\r\n\r\n    struct CreateV2Output {\r\n        address liquidityPoolToken;\r\n        uint256 liquidity;\r\n    }\r\n\r\n    function createV2LiquidityPool(CreateV2Input memory input) external payable returns (CreateV2Output memory);\r\n}\r\n"
      },
      "contracts/token-launcher/templates/TokenFiERC20.sol": {
        "content": "// SPDX-License-Identifier: MIT\r\npragma solidity 0.8.23;\r\n\r\nimport { AccessControl } from \"@openzeppelin/contracts/access/AccessControl.sol\";\r\nimport { ERC20, IERC20 } from \"@openzeppelin/contracts/token/ERC20/ERC20.sol\";\r\nimport { SafeERC20 } from \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\r\nimport { EnumerableSet } from \"@openzeppelin/contracts/utils/structs/EnumerableSet.sol\";\r\nimport { IUniswapV2Router02 } from \"@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol\";\r\n\r\nimport { ITokenLauncherERC20 } from \"../interfaces/ITokenLauncherERC20.sol\";\r\nimport { ITokenLauncherLiquidityPoolFactory } from \"../interfaces/ITokenLauncherLiquidityPoolFactory.sol\";\r\nimport { IBuyBackHandler } from \"../interfaces/IBuyBackHandler.sol\";\r\n\r\ncontract TokenFiERC20 is ERC20, AccessControl {\r\n    using EnumerableSet for EnumerableSet.AddressSet;\r\n    using SafeERC20 for IERC20;\r\n\r\n    bytes32 public constant FEE_MANAGER_ROLE = keccak256(\"FEE_MANAGER_ROLE\");\r\n\r\n    address public treasury;\r\n    uint256 public maxSupply;\r\n    string public logo;\r\n    ITokenLauncherERC20.Fees public fees;\r\n    ITokenLauncherLiquidityPoolFactory.BuyBackDetails public buybackDetails;\r\n    address public buybackHandler;\r\n    address public tokenLauncher;\r\n    bool public isReflectionToken;\r\n    uint8 private _decimals;\r\n\r\n    address public constant BURN_ADDRESS = 0x000000000000000000000000000000000000dEaD;\r\n    uint256 public constant MULTIPLIER_BASIS = 1e4;\r\n\r\n    /// @dev The set of addresses exempt from tax.\r\n    EnumerableSet.AddressSet private _exemptedFromTax;\r\n\r\n    /// @dev Set of exchange pool addresses.\r\n    EnumerableSet.AddressSet internal _exchangePools;\r\n\r\n    /// @dev Set of Reflection variables\r\n    uint256 public constant MAX = type(uint256).max / 2;\r\n\r\n    mapping(address => uint256) private _rOwned;\r\n    mapping(address => uint256) private _tOwned;\r\n\r\n    mapping(address => bool) private _isExcludedFromReflectionRewards;\r\n    address[] private _excluded;\r\n\r\n    struct TotalReflection {\r\n        uint256 t;\r\n        uint256 r;\r\n        uint256 tFee;\r\n    }\r\n    TotalReflection public totalReflection;\r\n\r\n    event ExemptedAdded(address indexed account);\r\n    event ExemptedRemoved(address indexed account);\r\n    event ExchangePoolAdded(address indexed pool);\r\n    event ExchangePoolRemoved(address indexed pool);\r\n    event TokenLauncherUpdated(address indexed newTokenLauncher);\r\n    event TransferTax(address indexed account, address indexed receiver, uint256 amount, string indexed taxType);\r\n    event BuyBackDetailsUpdated(address indexed router, address indexed pairToken, uint256 liquidityBasisPoints, uint256 priceImpactBasisPoints);\r\n\r\n    constructor(ITokenLauncherERC20.CreateErc20Input memory _input) ERC20(_input.name, _input.symbol) {\r\n        require(_input.owner != address(0), \"TokenFiERC20: owner cannot be Address Zero \");\r\n        require(_input.maxSupply >= _input.initialSupply, \"TokenFiERC20: initialSupply cannot be greater than maxSupply\");\r\n        treasury = _input.treasury;\r\n        maxSupply = _input.maxSupply;\r\n        logo = _input.logo;\r\n        _decimals = _input.decimals;\r\n        uint256 maxFee = _input.fees.transferFee.percentage + _input.fees.burn.percentage + _input.fees.reflection.percentage + _input.fees.buyback.percentage;\r\n        require(maxFee <= MULTIPLIER_BASIS, \"TokenFiERC20: fees sum must be less than 100%\");\r\n\r\n        fees = _input.fees;\r\n        buybackHandler = _input.buybackHandler;\r\n\r\n        if (_input.fees.reflection.percentage > 0) {\r\n            require(_input.initialSupply > 0, \"TokenFiERC20.constructor: initialSupply must be greater than 0\");\r\n            totalReflection.r = (MAX - (MAX % _input.initialSupply));\r\n            _rOwned[_input.treasury] = totalReflection.r;\r\n            totalReflection.t = _input.initialSupply;\r\n            _tOwned[_input.treasury] = _input.initialSupply;\r\n            isReflectionToken = true;\r\n            emit Transfer(address(0), _input.treasury, _input.initialSupply);\r\n        } else {\r\n            _mint(_input.treasury, _input.initialSupply);\r\n        }\r\n\r\n        // Exempt the buyback handler, treasury and burn address\r\n        _exemptedFromTax.add(_input.buybackHandler);\r\n\r\n        tokenLauncher = msg.sender;\r\n        _grantRole(DEFAULT_ADMIN_ROLE, _input.owner);\r\n        _grantRole(FEE_MANAGER_ROLE, tokenLauncher);\r\n        _grantRole(DEFAULT_ADMIN_ROLE, _input.tokenStore);\r\n    }\r\n\r\n    function decimals() public view override returns (uint8) {\r\n        return _decimals;\r\n    }\r\n\r\n    function setBuybackDetails(ITokenLauncherLiquidityPoolFactory.BuyBackDetails memory _buybackDetails) external onlyRole(FEE_MANAGER_ROLE) {\r\n        if (fees.buyback.percentage > 0) {\r\n            require(_buybackDetails.liquidityBasisPoints <= MULTIPLIER_BASIS, \"TokenFiERC20: liquidityBasisPoints must be less than 10,000\");\r\n            require(_buybackDetails.priceImpactBasisPoints <= MULTIPLIER_BASIS, \"TokenFiERC20: priceImpactBasisPoints must be less than 10,000\");\r\n            require(_buybackDetails.router != address(0), \"TokenFiERC20: router cannot be empty\");\r\n            require(_buybackDetails.pairToken != address(0), \"TokenFiERC20: pairToken cannot be empty\");\r\n        }\r\n        buybackDetails = _buybackDetails;\r\n\r\n        emit BuyBackDetailsUpdated(\r\n            _buybackDetails.router,\r\n            _buybackDetails.pairToken,\r\n            _buybackDetails.liquidityBasisPoints,\r\n            _buybackDetails.priceImpactBasisPoints\r\n        );\r\n    }\r\n\r\n    function addExchangePool(address pool) external onlyRole(FEE_MANAGER_ROLE) {\r\n        require(pool != address(0), \"TokenFiERC20: address cannot be empty\");\r\n        _exchangePools.add(pool);\r\n        emit ExchangePoolAdded(pool);\r\n    }\r\n\r\n    function addExemptAddress(address account) external onlyRole(FEE_MANAGER_ROLE) {\r\n        _exemptedFromTax.add(account);\r\n        emit ExemptedAdded(account);\r\n    }\r\n\r\n    function updateFees(ITokenLauncherERC20.Fees memory _fees) external onlyRole(DEFAULT_ADMIN_ROLE) {\r\n        if (isReflectionToken) {\r\n            require(_fees.reflection.percentage > 0, \"TokenFiERC20: reflection percentage must be non-zero\");\r\n        } else {\r\n            require(_fees.reflection.percentage == 0, \"TokenFiERC20: reflection percentage must be zero\");\r\n        }\r\n        uint256 maxFee = _fees.transferFee.percentage + _fees.burn.percentage + _fees.reflection.percentage + _fees.buyback.percentage;\r\n        require(maxFee <= MULTIPLIER_BASIS, \"TokenFiERC20: fees sum must be less than 100%\");\r\n        fees = _fees;\r\n    }\r\n\r\n    function isExemptedFromTax(address account) external view returns (bool) {\r\n        return _exemptedFromTax.contains(account);\r\n    }\r\n\r\n    function isExchangePool(address pool) external view returns (bool) {\r\n        return _exchangePools.contains(pool);\r\n    }\r\n\r\n    function balanceOf(address account) public view override returns (uint256) {\r\n        if (isReflectionToken) {\r\n            return _balanceOfReflection(account);\r\n        }\r\n        return super.balanceOf(account);\r\n    }\r\n\r\n    function totalSupply() public view override returns (uint256) {\r\n        if (isReflectionToken) {\r\n            return totalReflection.t;\r\n        }\r\n        return super.totalSupply();\r\n    }\r\n\r\n    /// @dev functions for Reflection\r\n\r\n    function isExcludedFromReflectionRewards(address account) public view returns (bool) {\r\n        return _isExcludedFromReflectionRewards[account] || account == address(this);\r\n    }\r\n\r\n    function reflect(uint256 tAmount) external onlyReflection {\r\n        address sender = _msgSender();\r\n        require(!isExcludedFromReflectionRewards(sender), \"Excluded addresses cannot call this function\");\r\n        (uint256 rAmount, , , , ) = _getValues(tAmount, tAmount, false, true);\r\n        _rOwned[sender] = _rOwned[sender] - rAmount;\r\n        totalReflection.r = totalReflection.r - rAmount;\r\n        totalReflection.tFee = totalReflection.tFee + tAmount;\r\n    }\r\n\r\n    function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns (uint256) {\r\n        require(tAmount <= totalReflection.t, \"Amount must be less than supply\");\r\n        if (!deductTransferFee) {\r\n            (uint256 rAmount, , , , ) = _getValues(tAmount, tAmount, false, true);\r\n            return rAmount;\r\n        } else {\r\n            (, uint256 rTransferAmount, , , ) = _getValues(tAmount, tAmount, false, true);\r\n            return rTransferAmount;\r\n        }\r\n    }\r\n\r\n    function tokenFromReflection(uint256 rAmount) public view returns (uint256) {\r\n        require(rAmount <= totalReflection.r, \"Amount must be less than total reflections\");\r\n        uint256 currentRate = _getRate();\r\n        return rAmount / currentRate;\r\n    }\r\n\r\n    function excludeAccount(address account) external onlyReflection onlyFromAdminOrLauncher {\r\n        require(!isExcludedFromReflectionRewards(account), \"Account is already excluded\");\r\n        if (_rOwned[account] > 0) {\r\n            _tOwned[account] = tokenFromReflection(_rOwned[account]);\r\n        }\r\n        _isExcludedFromReflectionRewards[account] = true;\r\n        _excluded.push(account);\r\n    }\r\n\r\n    function includeAccount(address account) external onlyReflection onlyFromAdminOrLauncher {\r\n        require(isExcludedFromReflectionRewards(account), \"Account is already included\");\r\n        for (uint256 i = 0; i < _excluded.length; i++) {\r\n            if (_excluded[i] == account) {\r\n                uint256 currentRate = _getRate();\r\n                totalReflection.r = totalReflection.r - _rOwned[account];\r\n                _rOwned[account] = _tOwned[account] * currentRate;\r\n                _tOwned[account] = 0;\r\n                totalReflection.r = totalReflection.r + _rOwned[account];\r\n\r\n                _isExcludedFromReflectionRewards[account] = false;\r\n                _excluded[i] = _excluded[_excluded.length - 1];\r\n                _excluded.pop();\r\n                break;\r\n            }\r\n        }\r\n    }\r\n\r\n    function totalFees() public view returns (uint256) {\r\n        return totalReflection.tFee;\r\n    }\r\n\r\n    function _balanceOfReflection(address account) private view returns (uint256) {\r\n        if (isExcludedFromReflectionRewards(account)) return _tOwned[account];\r\n        return tokenFromReflection(_rOwned[account]);\r\n    }\r\n\r\n    function _transferStandard(\r\n        address sender,\r\n        address recipient,\r\n        // solhint-disable-next-line\r\n        uint256 tAmount,\r\n        // solhint-disable-next-line\r\n        uint256 tTransferAmount,\r\n        uint256 rAmount,\r\n        uint256 rTransferAmount,\r\n        bool shouldReflectFee\r\n    ) private {\r\n        _rOwned[sender] = _rOwned[sender] - rAmount;\r\n        if (shouldReflectFee) {\r\n            _rOwned[recipient] = _rOwned[recipient] + rTransferAmount;\r\n        } else {\r\n            _rOwned[recipient] = _rOwned[recipient] + rAmount;\r\n        }\r\n    }\r\n\r\n    function _transferToExcluded(\r\n        address sender,\r\n        address recipient,\r\n        uint256 tAmount,\r\n        uint256 tTransferAmount,\r\n        uint256 rAmount,\r\n        uint256 rTransferAmount,\r\n        bool shouldReflectFee\r\n    ) private {\r\n        _rOwned[sender] = _rOwned[sender] - rAmount;\r\n        if (shouldReflectFee) {\r\n            _tOwned[recipient] = _tOwned[recipient] + tTransferAmount;\r\n            _rOwned[recipient] = _rOwned[recipient] + rTransferAmount;\r\n        } else {\r\n            _tOwned[recipient] = _tOwned[recipient] + tAmount;\r\n            _rOwned[recipient] = _rOwned[recipient] + rAmount;\r\n        }\r\n    }\r\n\r\n    function _transferFromExcluded(\r\n        address sender,\r\n        address recipient,\r\n        uint256 tAmount,\r\n        // solhint-disable-next-line\r\n        uint256 tTransferAmount,\r\n        uint256 rAmount,\r\n        uint256 rTransferAmount,\r\n        bool shouldReflectFee\r\n    ) private {\r\n        _tOwned[sender] = _tOwned[sender] - tAmount;\r\n        _rOwned[sender] = _rOwned[sender] - rAmount;\r\n        if (shouldReflectFee) {\r\n            _rOwned[recipient] = _rOwned[recipient] + rTransferAmount;\r\n        } else {\r\n            _rOwned[recipient] = _rOwned[recipient] + rAmount;\r\n        }\r\n    }\r\n\r\n    function _transferBothExcluded(\r\n        address sender,\r\n        address recipient,\r\n        uint256 tAmount,\r\n        uint256 tTransferAmount,\r\n        uint256 rAmount,\r\n        uint256 rTransferAmount,\r\n        bool shouldReflectFee\r\n    ) private {\r\n        _tOwned[sender] = _tOwned[sender] - tAmount;\r\n        _rOwned[sender] = _rOwned[sender] - rAmount;\r\n        if (shouldReflectFee) {\r\n            _tOwned[recipient] = _tOwned[recipient] + tTransferAmount;\r\n            _rOwned[recipient] = _rOwned[recipient] + rTransferAmount;\r\n        } else {\r\n            _tOwned[recipient] = _tOwned[recipient] + tAmount;\r\n            _rOwned[recipient] = _rOwned[recipient] + rAmount;\r\n        }\r\n    }\r\n\r\n    function _reflectFee(uint256 rFee, uint256 tFee) private {\r\n        totalReflection.r = totalReflection.r - rFee;\r\n        totalReflection.tFee = totalReflection.tFee + tFee;\r\n    }\r\n\r\n    function _getValues(\r\n        uint256 tAmount,\r\n        uint256 tAmountOriginal,\r\n        bool isSwap,\r\n        bool shouldReflectFee\r\n    ) private view returns (uint256, uint256, uint256, uint256, uint256) {\r\n        (uint256 tTransferAmount, uint256 tFee) = _getTValues(tAmount, tAmountOriginal, isSwap, shouldReflectFee);\r\n\r\n        uint256 currentRate = _getRate();\r\n        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate);\r\n        return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee);\r\n    }\r\n\r\n    function _getTValues(uint256 tAmount, uint256 tAmountOriginal, bool isSwap, bool shouldReflectFee) private view returns (uint256, uint256) {\r\n        bool shouldReflect = (!fees.reflection.onlyOnSwaps || isSwap);\r\n        if (!shouldReflect || !shouldReflectFee) return (tAmount, 0);\r\n        uint256 tFee = (tAmountOriginal * fees.reflection.percentage) / MULTIPLIER_BASIS;\r\n        uint256 tTransferAmount = tAmount - tFee;\r\n        return (tTransferAmount, tFee);\r\n    }\r\n\r\n    function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) {\r\n        uint256 rAmount = tAmount * currentRate;\r\n        uint256 rFee = tFee * currentRate;\r\n        uint256 rTransferAmount = rAmount - rFee;\r\n        return (rAmount, rTransferAmount, rFee);\r\n    }\r\n\r\n    function _getRate() private view returns (uint256) {\r\n        (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();\r\n        return rSupply / tSupply;\r\n    }\r\n\r\n    function _getCurrentSupply() private view returns (uint256, uint256) {\r\n        uint256 rSupply = totalReflection.r;\r\n        uint256 tSupply = totalReflection.t;\r\n        for (uint256 i = 0; i < _excluded.length; i++) {\r\n            if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (totalReflection.r, totalReflection.t);\r\n            rSupply = rSupply - _rOwned[_excluded[i]];\r\n            tSupply = tSupply - _tOwned[_excluded[i]];\r\n        }\r\n        if (rSupply < totalReflection.r / totalReflection.t) return (totalReflection.r, totalReflection.t);\r\n        return (rSupply, tSupply);\r\n    }\r\n\r\n    function removeExchangePool(address pool) external onlyRole(FEE_MANAGER_ROLE) {\r\n        _exchangePools.remove(pool);\r\n        emit ExchangePoolRemoved(pool);\r\n    }\r\n\r\n    function removeExemptAddress(address account) external onlyRole(FEE_MANAGER_ROLE) {\r\n        _exemptedFromTax.remove(account);\r\n        emit ExemptedRemoved(account);\r\n    }\r\n\r\n    function _transfer(address sender, address recipient, uint256 amount) internal virtual override {\r\n        bool isSwap = _isSwap(sender, recipient);\r\n        bool exemptedFromTax = _isExemptedFromTax(sender, recipient);\r\n        uint256 originalAmount = amount;\r\n        if (fees.transferFee.percentage > 0 && (!fees.transferFee.onlyOnSwaps || isSwap) && !exemptedFromTax) {\r\n            uint256 transferFee = (originalAmount * fees.transferFee.percentage) / MULTIPLIER_BASIS;\r\n            _transferInternal(sender, treasury, transferFee, originalAmount, false);\r\n            amount -= transferFee;\r\n            emit TransferTax(sender, treasury, transferFee, \"transferFee\");\r\n        }\r\n        if (fees.burn.percentage > 0 && (!fees.burn.onlyOnSwaps || isSwap) && !exemptedFromTax) {\r\n            uint256 burnFee = (originalAmount * fees.burn.percentage) / MULTIPLIER_BASIS;\r\n            _transferInternal(sender, BURN_ADDRESS, burnFee, originalAmount, false);\r\n            amount -= burnFee;\r\n            emit TransferTax(sender, BURN_ADDRESS, burnFee, \"burnFee\");\r\n        }\r\n        if (fees.buyback.percentage > 0 && (!fees.buyback.onlyOnSwaps || isSwap) && !exemptedFromTax) {\r\n            uint256 buybackFee = (originalAmount * fees.buyback.percentage) / MULTIPLIER_BASIS;\r\n            _transferInternal(sender, buybackHandler, buybackFee, originalAmount, false);\r\n            if (!_exchangePools.contains(sender) && buybackDetails.router != address(0)) {\r\n                IBuyBackHandler(buybackHandler).buyback(treasury, buybackDetails);\r\n            }\r\n            amount -= buybackFee;\r\n            emit TransferTax(sender, buybackHandler, buybackFee, \"buybackFee\");\r\n        }\r\n\r\n        _transferInternal(sender, recipient, amount, originalAmount, true);\r\n    }\r\n\r\n    function _transferReflection(address sender, address recipient, uint256 tAmount, uint256 tAmountOriginal, bool shouldReflectFee) private {\r\n        require(sender != address(0), \"ERC20: transfer from the zero address\");\r\n        require(recipient != address(0), \"ERC20: transfer to the zero address\");\r\n        require(tAmount > 0, \"Transfer amount must be greater than zero\");\r\n        bool isSwap = _isSwap(sender, recipient);\r\n        address liquidityPoolFactory = ITokenLauncherERC20(tokenLauncher).liquidityPoolFactory();\r\n        if (sender == liquidityPoolFactory || recipient == liquidityPoolFactory) {\r\n            shouldReflectFee = false;\r\n        }\r\n        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(\r\n            tAmount,\r\n            tAmountOriginal,\r\n            isSwap,\r\n            shouldReflectFee\r\n        );\r\n\r\n        if (isExcludedFromReflectionRewards(sender) && !isExcludedFromReflectionRewards(recipient)) {\r\n            _transferFromExcluded(sender, recipient, tAmount, tTransferAmount, rAmount, rTransferAmount, shouldReflectFee);\r\n        } else if (!isExcludedFromReflectionRewards(sender) && isExcludedFromReflectionRewards(recipient)) {\r\n            _transferToExcluded(sender, recipient, tAmount, tTransferAmount, rAmount, rTransferAmount, shouldReflectFee);\r\n        } else if (!isExcludedFromReflectionRewards(sender) && !isExcludedFromReflectionRewards(recipient)) {\r\n            _transferStandard(sender, recipient, tAmount, tTransferAmount, rAmount, rTransferAmount, shouldReflectFee);\r\n        } else if (isExcludedFromReflectionRewards(sender) && isExcludedFromReflectionRewards(recipient)) {\r\n            _transferBothExcluded(sender, recipient, tAmount, tTransferAmount, rAmount, rTransferAmount, shouldReflectFee);\r\n        }\r\n\r\n        emit Transfer(sender, recipient, tTransferAmount);\r\n\r\n        if (shouldReflectFee) {\r\n            _reflectFee(rFee, tFee);\r\n            emit TransferTax(sender, address(0), tFee, \"reflectionFee\");\r\n        }\r\n    }\r\n\r\n    function _transferInternal(address sender, address recipient, uint256 amount, uint256 originalAmount, bool shouldReflectFee) private {\r\n        if (isReflectionToken) {\r\n            _transferReflection(sender, recipient, amount, originalAmount, shouldReflectFee);\r\n        } else {\r\n            super._transfer(sender, recipient, amount);\r\n        }\r\n    }\r\n\r\n    function _isSwap(address sender, address recipient) internal view returns (bool) {\r\n        return _exchangePools.contains(sender) || _exchangePools.contains(recipient);\r\n    }\r\n\r\n    function _isExemptedFromTax(address sender, address recipient) internal view returns (bool) {\r\n        return _exemptedFromTax.contains(sender) || _exemptedFromTax.contains(recipient);\r\n    }\r\n\r\n    function _mintReflection(address account, uint256 amount) private {\r\n        // increase total amounts\r\n        uint256 _rAmount = amount * _getRate();\r\n        totalReflection.t = totalReflection.t + amount;\r\n        totalReflection.r = totalReflection.r + _rAmount;\r\n\r\n        // increase tBalance if the receiver address is excluded\r\n        if (isExcludedFromReflectionRewards(account)) {\r\n            _tOwned[account] = _tOwned[account] + amount;\r\n        }\r\n        _rOwned[account] = _rOwned[account] + _rAmount;\r\n\r\n        emit Transfer(address(0), account, amount);\r\n    }\r\n\r\n    function mint(address to, uint256 amount) external onlyRole(DEFAULT_ADMIN_ROLE) {\r\n        require(totalSupply() + amount <= maxSupply, \"TokenFiERC20: max supply exceeded\");\r\n        if (isReflectionToken) {\r\n            _mintReflection(to, amount);\r\n        } else {\r\n            super._mint(to, amount);\r\n        }\r\n    }\r\n\r\n    function updateTokenLauncher(address _newTokenLauncher) external onlyRole(DEFAULT_ADMIN_ROLE) {\r\n        _revokeRole(FEE_MANAGER_ROLE, tokenLauncher);\r\n        tokenLauncher = _newTokenLauncher;\r\n\r\n        _grantRole(FEE_MANAGER_ROLE, _newTokenLauncher);\r\n        emit TokenLauncherUpdated(_newTokenLauncher);\r\n    }\r\n\r\n    modifier onlyFromAdminOrLauncher() {\r\n        require(hasRole(DEFAULT_ADMIN_ROLE, msg.sender) || msg.sender == tokenLauncher, \"TokenFiERC20: must be admin\");\r\n        _;\r\n    }\r\n\r\n    modifier onlyReflection() {\r\n        require(isReflectionToken, \"TokenFiERC20: reflection not enabled\");\r\n        _;\r\n    }\r\n}\r\n"
      }
    }
  }}