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"@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol)\n\npragma solidity ^0.8.2;\n\nimport \"../../utils/AddressUpgradeable.sol\";\n\n/**\n * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed\n * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an\n * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer\n * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.\n *\n * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be\n * reused. This mechanism prevents re-execution of each \"step\" but allows the creation of new initialization steps in\n * case an upgrade adds a module that needs to be initialized.\n *\n * For example:\n *\n * [.hljs-theme-light.nopadding]\n * ```\n * contract MyToken is ERC20Upgradeable {\n * function initialize() initializer public {\n * __ERC20_init(\"MyToken\", \"MTK\");\n * }\n * }\n * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {\n * function initializeV2() reinitializer(2) public {\n * __ERC20Permit_init(\"MyToken\");\n * }\n * }\n * ```\n *\n * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as\n * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.\n *\n * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure\n * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.\n *\n * [CAUTION]\n * ====\n * Avoid leaving a contract uninitialized.\n *\n * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation\n * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke\n * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:\n *\n * [.hljs-theme-light.nopadding]\n * ```\n * /// @custom:oz-upgrades-unsafe-allow constructor\n * constructor() {\n * _disableInitializers();\n * }\n * ```\n * ====\n */\nabstract contract Initializable {\n /**\n * @dev Indicates that the contract has been initialized.\n * @custom:oz-retyped-from bool\n */\n uint8 private _initialized;\n\n /**\n * @dev Indicates that the contract is in the process of being initialized.\n */\n bool private _initializing;\n\n /**\n * @dev Triggered when the contract has been initialized or reinitialized.\n */\n event Initialized(uint8 version);\n\n /**\n * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,\n * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`.\n */\n modifier initializer() {\n bool isTopLevelCall = !_initializing;\n require(\n (isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),\n \"Initializable: contract is already initialized\"\n );\n _initialized = 1;\n if (isTopLevelCall) {\n _initializing = true;\n }\n _;\n if (isTopLevelCall) {\n _initializing = false;\n emit Initialized(1);\n }\n }\n\n /**\n * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the\n * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be\n * used to initialize parent contracts.\n *\n * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original\n * initialization step. This is essential to configure modules that are added through upgrades and that require\n * initialization.\n *\n * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in\n * a contract, executing them in the right order is up to the developer or operator.\n */\n modifier reinitializer(uint8 version) {\n require(!_initializing && _initialized < version, \"Initializable: contract is already initialized\");\n _initialized = version;\n _initializing = true;\n _;\n _initializing = false;\n emit Initialized(version);\n }\n\n /**\n * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the\n * {initializer} and {reinitializer} modifiers, directly or indirectly.\n */\n modifier onlyInitializing() {\n require(_initializing, \"Initializable: contract is not initializing\");\n _;\n }\n\n /**\n * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.\n * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized\n * to any version. It is recommended to use this to lock implementation contracts that are designed to be called\n * through proxies.\n */\n function _disableInitializers() internal virtual {\n require(!_initializing, \"Initializable: contract is initializing\");\n if (_initialized < type(uint8).max) {\n _initialized = type(uint8).max;\n emit Initialized(type(uint8).max);\n }\n }\n}\n"
},
"@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./IERC20Upgradeable.sol\";\nimport \"./extensions/IERC20MetadataUpgradeable.sol\";\nimport \"../../utils/ContextUpgradeable.sol\";\nimport \"../../proxy/utils/Initializable.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.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How\n * to implement supply mechanisms].\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 ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20Upgradeable, IERC20MetadataUpgradeable {\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 * The default value of {decimals} is 18. To select a different value for\n * {decimals} you should overload it.\n *\n * All two of these values are immutable: they can only be set once during\n * construction.\n */\n function __ERC20_init(string memory name_, string memory symbol_) internal onlyInitializing {\n __ERC20_init_unchained(name_, symbol_);\n }\n\n function __ERC20_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing {\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 value {ERC20} uses, unless this function is\n * 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(\n address from,\n address to,\n uint256 amount\n ) 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(\n address from,\n address to,\n uint256 amount\n ) 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 }\n _balances[to] += amount;\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 _balances[account] += amount;\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 }\n _totalSupply -= amount;\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(\n address owner,\n address spender,\n uint256 amount\n ) 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(\n address owner,\n address spender,\n uint256 amount\n ) 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(\n address from,\n address to,\n uint256 amount\n ) 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(\n address from,\n address to,\n uint256 amount\n ) internal virtual {}\n\n /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[45] private __gap;\n}\n"
},
"@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (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 IERC20Upgradeable {\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(\n address from,\n address to,\n uint256 amount\n ) external returns (bool);\n}\n"
},
"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/IERC20MetadataUpgradeable.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 \"../IERC20Upgradeable.sol\";\n\n/**\n * @dev Interface for the optional metadata functions from the ERC20 standard.\n *\n * _Available since v4.1._\n */\ninterface IERC20MetadataUpgradeable is IERC20Upgradeable {\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-upgradeable/token/ERC20/extensions/draft-ERC20PermitUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/extensions/draft-ERC20Permit.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./draft-IERC20PermitUpgradeable.sol\";\nimport \"../ERC20Upgradeable.sol\";\nimport \"../../../utils/cryptography/draft-EIP712Upgradeable.sol\";\nimport \"../../../utils/cryptography/ECDSAUpgradeable.sol\";\nimport \"../../../utils/CountersUpgradeable.sol\";\nimport \"../../../proxy/utils/Initializable.sol\";\n\n/**\n * @dev Implementation 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 * _Available since v3.4._\n *\n * @custom:storage-size 51\n */\nabstract contract ERC20PermitUpgradeable is Initializable, ERC20Upgradeable, IERC20PermitUpgradeable, EIP712Upgradeable {\n using CountersUpgradeable for CountersUpgradeable.Counter;\n\n mapping(address => CountersUpgradeable.Counter) private _nonces;\n\n // solhint-disable-next-line var-name-mixedcase\n bytes32 private constant _PERMIT_TYPEHASH =\n keccak256(\"Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)\");\n /**\n * @dev In previous versions `_PERMIT_TYPEHASH` was declared as `immutable`.\n * However, to ensure consistency with the upgradeable transpiler, we will continue\n * to reserve a slot.\n * @custom:oz-renamed-from _PERMIT_TYPEHASH\n */\n // solhint-disable-next-line var-name-mixedcase\n bytes32 private _PERMIT_TYPEHASH_DEPRECATED_SLOT;\n\n /**\n * @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `\"1\"`.\n *\n * It's a good idea to use the same `name` that is defined as the ERC20 token name.\n */\n function __ERC20Permit_init(string memory name) internal onlyInitializing {\n __EIP712_init_unchained(name, \"1\");\n }\n\n function __ERC20Permit_init_unchained(string memory) internal onlyInitializing {}\n\n /**\n * @dev See {IERC20Permit-permit}.\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 ) public virtual override {\n require(block.timestamp <= deadline, \"ERC20Permit: expired deadline\");\n\n bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline));\n\n bytes32 hash = _hashTypedDataV4(structHash);\n\n address signer = ECDSAUpgradeable.recover(hash, v, r, s);\n require(signer == owner, \"ERC20Permit: invalid signature\");\n\n _approve(owner, spender, value);\n }\n\n /**\n * @dev See {IERC20Permit-nonces}.\n */\n function nonces(address owner) public view virtual override returns (uint256) {\n return _nonces[owner].current();\n }\n\n /**\n * @dev See {IERC20Permit-DOMAIN_SEPARATOR}.\n */\n // solhint-disable-next-line func-name-mixedcase\n function DOMAIN_SEPARATOR() external view override returns (bytes32) {\n return _domainSeparatorV4();\n }\n\n /**\n * @dev \"Consume a nonce\": return the current value and increment.\n *\n * _Available since v4.1._\n */\n function _useNonce(address owner) internal virtual returns (uint256 current) {\n CountersUpgradeable.Counter storage nonce = _nonces[owner];\n current = nonce.current();\n nonce.increment();\n }\n\n /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[49] private __gap;\n}\n"
},
"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/draft-IERC20PermitUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-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 */\ninterface IERC20PermitUpgradeable {\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 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-upgradeable/utils/AddressUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)\n\npragma solidity ^0.8.1;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary AddressUpgradeable {\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 *\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://diligence.consensys.net/posts/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/v0.5.11/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 functionCall(target, data, \"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(\n address target,\n bytes memory data,\n uint256 value\n ) 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 require(isContract(target), \"Address: call to non-contract\");\n\n (bool success, bytes memory returndata) = target.call{value: value}(data);\n return verifyCallResult(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 require(isContract(target), \"Address: static call to non-contract\");\n\n (bool success, bytes memory returndata) = target.staticcall(data);\n return verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n * revert reason 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 // 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}\n"
},
"@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)\n\npragma solidity ^0.8.0;\nimport \"../proxy/utils/Initializable.sol\";\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 ContextUpgradeable is Initializable {\n function __Context_init() internal onlyInitializing {\n }\n\n function __Context_init_unchained() internal onlyInitializing {\n }\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 /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[50] private __gap;\n}\n"
},
"@openzeppelin/contracts-upgradeable/utils/CountersUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @title Counters\n * @author Matt Condon (@shrugs)\n * @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number\n * of elements in a mapping, issuing ERC721 ids, or counting request ids.\n *\n * Include with `using Counters for Counters.Counter;`\n */\nlibrary CountersUpgradeable {\n struct Counter {\n // This variable should never be directly accessed by users of the library: interactions must be restricted to\n // the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add\n // this feature: see https://github.com/ethereum/solidity/issues/4637\n uint256 _value; // default: 0\n }\n\n function current(Counter storage counter) internal view returns (uint256) {\n return counter._value;\n }\n\n function increment(Counter storage counter) internal {\n unchecked {\n counter._value += 1;\n }\n }\n\n function decrement(Counter storage counter) internal {\n uint256 value = counter._value;\n require(value > 0, \"Counter: decrement overflow\");\n unchecked {\n counter._value = value - 1;\n }\n }\n\n function reset(Counter storage counter) internal {\n counter._value = 0;\n }\n}\n"
},
"@openzeppelin/contracts-upgradeable/utils/StringsUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary StringsUpgradeable {\n bytes16 private constant _HEX_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 // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\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 if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\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] = _HEX_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"
},
"@openzeppelin/contracts-upgradeable/utils/cryptography/ECDSAUpgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.3) (utils/cryptography/ECDSA.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../StringsUpgradeable.sol\";\n\n/**\n * @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.\n *\n * These functions can be used to verify that a message was signed by the holder\n * of the private keys of a given address.\n */\nlibrary ECDSAUpgradeable {\n enum RecoverError {\n NoError,\n InvalidSignature,\n InvalidSignatureLength,\n InvalidSignatureS,\n InvalidSignatureV\n }\n\n function _throwError(RecoverError error) private pure {\n if (error == RecoverError.NoError) {\n return; // no error: do nothing\n } else if (error == RecoverError.InvalidSignature) {\n revert(\"ECDSA: invalid signature\");\n } else if (error == RecoverError.InvalidSignatureLength) {\n revert(\"ECDSA: invalid signature length\");\n } else if (error == RecoverError.InvalidSignatureS) {\n revert(\"ECDSA: invalid signature 's' value\");\n } else if (error == RecoverError.InvalidSignatureV) {\n revert(\"ECDSA: invalid signature 'v' value\");\n }\n }\n\n /**\n * @dev Returns the address that signed a hashed message (`hash`) with\n * `signature` or error string. This address can then be used for verification purposes.\n *\n * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n * this function rejects them by requiring the `s` value to be in the lower\n * half order, and the `v` value to be either 27 or 28.\n *\n * IMPORTANT: `hash` _must_ be the result of a hash operation for the\n * verification to be secure: it is possible to craft signatures that\n * recover to arbitrary addresses for non-hashed data. A safe way to ensure\n * this is by receiving a hash of the original message (which may otherwise\n * be too long), and then calling {toEthSignedMessageHash} on it.\n *\n * Documentation for signature generation:\n * - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]\n * - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]\n *\n * _Available since v4.3._\n */\n function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {\n if (signature.length == 65) {\n bytes32 r;\n bytes32 s;\n uint8 v;\n // ecrecover takes the signature parameters, and the only way to get them\n // currently is to use assembly.\n /// @solidity memory-safe-assembly\n assembly {\n r := mload(add(signature, 0x20))\n s := mload(add(signature, 0x40))\n v := byte(0, mload(add(signature, 0x60)))\n }\n return tryRecover(hash, v, r, s);\n } else {\n return (address(0), RecoverError.InvalidSignatureLength);\n }\n }\n\n /**\n * @dev Returns the address that signed a hashed message (`hash`) with\n * `signature`. This address can then be used for verification purposes.\n *\n * The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:\n * this function rejects them by requiring the `s` value to be in the lower\n * half order, and the `v` value to be either 27 or 28.\n *\n * IMPORTANT: `hash` _must_ be the result of a hash operation for the\n * verification to be secure: it is possible to craft signatures that\n * recover to arbitrary addresses for non-hashed data. A safe way to ensure\n * this is by receiving a hash of the original message (which may otherwise\n * be too long), and then calling {toEthSignedMessageHash} on it.\n */\n function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, signature);\n _throwError(error);\n return recovered;\n }\n\n /**\n * @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.\n *\n * See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]\n *\n * _Available since v4.3._\n */\n function tryRecover(\n bytes32 hash,\n bytes32 r,\n bytes32 vs\n ) internal pure returns (address, RecoverError) {\n bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);\n uint8 v = uint8((uint256(vs) >> 255) + 27);\n return tryRecover(hash, v, r, s);\n }\n\n /**\n * @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.\n *\n * _Available since v4.2._\n */\n function recover(\n bytes32 hash,\n bytes32 r,\n bytes32 vs\n ) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, r, vs);\n _throwError(error);\n return recovered;\n }\n\n /**\n * @dev Overload of {ECDSA-tryRecover} that receives the `v`,\n * `r` and `s` signature fields separately.\n *\n * _Available since v4.3._\n */\n function tryRecover(\n bytes32 hash,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) internal pure returns (address, RecoverError) {\n // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature\n // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines\n // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most\n // signatures from current libraries generate a unique signature with an s-value in the lower half order.\n //\n // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value\n // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or\n // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept\n // these malleable signatures as well.\n if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {\n return (address(0), RecoverError.InvalidSignatureS);\n }\n if (v != 27 && v != 28) {\n return (address(0), RecoverError.InvalidSignatureV);\n }\n\n // If the signature is valid (and not malleable), return the signer address\n address signer = ecrecover(hash, v, r, s);\n if (signer == address(0)) {\n return (address(0), RecoverError.InvalidSignature);\n }\n\n return (signer, RecoverError.NoError);\n }\n\n /**\n * @dev Overload of {ECDSA-recover} that receives the `v`,\n * `r` and `s` signature fields separately.\n */\n function recover(\n bytes32 hash,\n uint8 v,\n bytes32 r,\n bytes32 s\n ) internal pure returns (address) {\n (address recovered, RecoverError error) = tryRecover(hash, v, r, s);\n _throwError(error);\n return recovered;\n }\n\n /**\n * @dev Returns an Ethereum Signed Message, created from a `hash`. This\n * produces hash corresponding to the one signed with the\n * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n * JSON-RPC method as part of EIP-191.\n *\n * See {recover}.\n */\n function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {\n // 32 is the length in bytes of hash,\n // enforced by the type signature above\n return keccak256(abi.encodePacked(\"\\x19Ethereum Signed Message:\\n32\", hash));\n }\n\n /**\n * @dev Returns an Ethereum Signed Message, created from `s`. This\n * produces hash corresponding to the one signed with the\n * https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]\n * JSON-RPC method as part of EIP-191.\n *\n * See {recover}.\n */\n function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {\n return keccak256(abi.encodePacked(\"\\x19Ethereum Signed Message:\\n\", StringsUpgradeable.toString(s.length), s));\n }\n\n /**\n * @dev Returns an Ethereum Signed Typed Data, created from a\n * `domainSeparator` and a `structHash`. This produces hash corresponding\n * to the one signed with the\n * https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]\n * JSON-RPC method as part of EIP-712.\n *\n * See {recover}.\n */\n function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {\n return keccak256(abi.encodePacked(\"\\x19\\x01\", domainSeparator, structHash));\n }\n}\n"
},
"@openzeppelin/contracts-upgradeable/utils/cryptography/draft-EIP712Upgradeable.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol)\n\npragma solidity ^0.8.0;\n\nimport \"./ECDSAUpgradeable.sol\";\nimport \"../../proxy/utils/Initializable.sol\";\n\n/**\n * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.\n *\n * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,\n * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding\n * they need in their contracts using a combination of `abi.encode` and `keccak256`.\n *\n * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding\n * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA\n * ({_hashTypedDataV4}).\n *\n * The implementation of the domain separator was designed to be as efficient as possible while still properly updating\n * the chain id to protect against replay attacks on an eventual fork of the chain.\n *\n * NOTE: This contract implements the version of the encoding known as \"v4\", as implemented by the JSON RPC method\n * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].\n *\n * _Available since v3.4._\n *\n * @custom:storage-size 52\n */\nabstract contract EIP712Upgradeable is Initializable {\n /* solhint-disable var-name-mixedcase */\n bytes32 private _HASHED_NAME;\n bytes32 private _HASHED_VERSION;\n bytes32 private constant _TYPE_HASH = keccak256(\"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)\");\n\n /* solhint-enable var-name-mixedcase */\n\n /**\n * @dev Initializes the domain separator and parameter caches.\n *\n * The meaning of `name` and `version` is specified in\n * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:\n *\n * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.\n * - `version`: the current major version of the signing domain.\n *\n * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart\n * contract upgrade].\n */\n function __EIP712_init(string memory name, string memory version) internal onlyInitializing {\n __EIP712_init_unchained(name, version);\n }\n\n function __EIP712_init_unchained(string memory name, string memory version) internal onlyInitializing {\n bytes32 hashedName = keccak256(bytes(name));\n bytes32 hashedVersion = keccak256(bytes(version));\n _HASHED_NAME = hashedName;\n _HASHED_VERSION = hashedVersion;\n }\n\n /**\n * @dev Returns the domain separator for the current chain.\n */\n function _domainSeparatorV4() internal view returns (bytes32) {\n return _buildDomainSeparator(_TYPE_HASH, _EIP712NameHash(), _EIP712VersionHash());\n }\n\n function _buildDomainSeparator(\n bytes32 typeHash,\n bytes32 nameHash,\n bytes32 versionHash\n ) private view returns (bytes32) {\n return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));\n }\n\n /**\n * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this\n * function returns the hash of the fully encoded EIP712 message for this domain.\n *\n * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:\n *\n * ```solidity\n * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(\n * keccak256(\"Mail(address to,string contents)\"),\n * mailTo,\n * keccak256(bytes(mailContents))\n * )));\n * address signer = ECDSA.recover(digest, signature);\n * ```\n */\n function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {\n return ECDSAUpgradeable.toTypedDataHash(_domainSeparatorV4(), structHash);\n }\n\n /**\n * @dev The hash of the name parameter for the EIP712 domain.\n *\n * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs\n * are a concern.\n */\n function _EIP712NameHash() internal virtual view returns (bytes32) {\n return _HASHED_NAME;\n }\n\n /**\n * @dev The hash of the version parameter for the EIP712 domain.\n *\n * NOTE: This function reads from storage by default, but can be redefined to return a constant value if gas costs\n * are a concern.\n */\n function _EIP712VersionHash() internal virtual view returns (bytes32) {\n return _HASHED_VERSION;\n }\n\n /**\n * @dev This empty reserved space is put in place to allow future versions to add new\n * variables without shifting down storage in the inheritance chain.\n * See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps\n */\n uint256[50] private __gap;\n}\n"
},
"@openzeppelin/contracts/utils/Strings.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_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 // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\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 if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\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] = _HEX_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"
},
"@openzeppelin/contracts/utils/math/SafeMath.sol": {
"content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.6.0) (utils/math/SafeMath.sol)\n\npragma solidity ^0.8.0;\n\n// CAUTION\n// This version of SafeMath should only be used with Solidity 0.8 or later,\n// because it relies on the compiler's built in overflow checks.\n\n/**\n * @dev Wrappers over Solidity's arithmetic operations.\n *\n * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler\n * now has built in overflow checking.\n */\nlibrary SafeMath {\n /**\n * @dev Returns the addition of two unsigned integers, with an overflow flag.\n *\n * _Available since v3.4._\n */\n function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n unchecked {\n uint256 c = a + b;\n if (c < a) return (false, 0);\n return (true, c);\n }\n }\n\n /**\n * @dev Returns the subtraction of two unsigned integers, with an overflow flag.\n *\n * _Available since v3.4._\n */\n function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n unchecked {\n if (b > a) return (false, 0);\n return (true, a - b);\n }\n }\n\n /**\n * @dev Returns the multiplication of two unsigned integers, with an overflow flag.\n *\n * _Available since v3.4._\n */\n function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n unchecked {\n // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n // benefit is lost if 'b' is also tested.\n // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n if (a == 0) return (true, 0);\n uint256 c = a * b;\n if (c / a != b) return (false, 0);\n return (true, c);\n }\n }\n\n /**\n * @dev Returns the division of two unsigned integers, with a division by zero flag.\n *\n * _Available since v3.4._\n */\n function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n return (true, a / b);\n }\n }\n\n /**\n * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.\n *\n * _Available since v3.4._\n */\n function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n unchecked {\n if (b == 0) return (false, 0);\n return (true, a % b);\n }\n }\n\n /**\n * @dev Returns the addition of two unsigned integers, reverting on\n * overflow.\n *\n * Counterpart to Solidity's `+` operator.\n *\n * Requirements:\n *\n * - Addition cannot overflow.\n */\n function add(uint256 a, uint256 b) internal pure returns (uint256) {\n return a + b;\n }\n\n /**\n * @dev Returns the subtraction of two unsigned integers, reverting on\n * overflow (when the result is negative).\n *\n * Counterpart to Solidity's `-` operator.\n *\n * Requirements:\n *\n * - Subtraction cannot overflow.\n */\n function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n return a - b;\n }\n\n /**\n * @dev Returns the multiplication of two unsigned integers, reverting on\n * overflow.\n *\n * Counterpart to Solidity's `*` operator.\n *\n * Requirements:\n *\n * - Multiplication cannot overflow.\n */\n function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n return a * b;\n }\n\n /**\n * @dev Returns the integer division of two unsigned integers, reverting on\n * division by zero. The result is rounded towards zero.\n *\n * Counterpart to Solidity's `/` operator.\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function div(uint256 a, uint256 b) internal pure returns (uint256) {\n return a / b;\n }\n\n /**\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n * reverting when dividing by zero.\n *\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n * invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n return a % b;\n }\n\n /**\n * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\n * overflow (when the result is negative).\n *\n * CAUTION: This function is deprecated because it requires allocating memory for the error\n * message unnecessarily. For custom revert reasons use {trySub}.\n *\n * Counterpart to Solidity's `-` operator.\n *\n * Requirements:\n *\n * - Subtraction cannot overflow.\n */\n function sub(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b <= a, errorMessage);\n return a - b;\n }\n }\n\n /**\n * @dev Returns the integer division of two unsigned integers, reverting with custom message on\n * division by zero. The result is rounded towards zero.\n *\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n * `revert` opcode (which leaves remaining gas untouched) while Solidity\n * uses an invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function div(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n return a / b;\n }\n }\n\n /**\n * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n * reverting with custom message when dividing by zero.\n *\n * CAUTION: This function is deprecated because it requires allocating memory for the error\n * message unnecessarily. For custom revert reasons use {tryMod}.\n *\n * Counterpart to Solidity's `%` operator. This function uses a `revert`\n * opcode (which leaves remaining gas untouched) while Solidity uses an\n * invalid opcode to revert (consuming all remaining gas).\n *\n * Requirements:\n *\n * - The divisor cannot be zero.\n */\n function mod(\n uint256 a,\n uint256 b,\n string memory errorMessage\n ) internal pure returns (uint256) {\n unchecked {\n require(b > 0, errorMessage);\n return a % b;\n }\n }\n}\n"
},
"contracts/neuron-options/core/Constants.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0\npragma solidity 0.8.9;\n\n/** Library for sharing constants between contracts */\nlibrary Constants {\n uint8 public constant MAX_COLLATERAL_ASSETS = 6;\n}\n"
},
"contracts/neuron-options/core/ONtoken.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0\npragma solidity 0.8.9;\n\nimport { SafeMath } from \"@openzeppelin/contracts/utils/math/SafeMath.sol\";\nimport { Strings } from \"@openzeppelin/contracts/utils/Strings.sol\";\nimport { ERC20PermitUpgradeable } from \"@openzeppelin/contracts-upgradeable/token/ERC20/extensions/draft-ERC20PermitUpgradeable.sol\";\n\nimport { ERC20Upgradeable } from \"@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol\";\nimport { BokkyPooBahsDateTimeLibrary } from \"../packages/BokkyPooBahsDateTimeLibrary.sol\";\nimport { AddressBookInterface } from \"../interfaces/AddressBookInterface.sol\";\nimport { Constants } from \"./Constants.sol\";\n\n/**\n * @title ONtoken\n * @notice ONtoken is the ERC20 token for an option\n * @dev The ONtoken inherits ERC20Upgradeable thats' why we need to use the init instead of constructor\n */\ncontract ONtoken is ERC20PermitUpgradeable {\n using SafeMath for uint256;\n\n /// @notice total amount of minted onTokens, does not decrease on burn when onToken is redeemed\n // but decreases when burnONToken is called by vault owner for correct calculations in MarginCalculator\n // used for calculating redeems and settles\n uint256 public collaterizedTotalAmount;\n\n /// @notice address of the Controller module\n address public controller;\n\n /// @notice asset that the option references\n address public underlyingAsset;\n\n /// @notice asset that the strike price is denominated in\n address public strikeAsset;\n\n /// @notice assets that is held as collateral against short/written options\n address[] public collateralAssets;\n\n /// @notice amounts of collateralAssets used for collaterization of collaterizedTotalAmount of this onToken\n /// updated upon every mint and burn by vaults owners\n uint256[] public collateralsAmounts;\n\n /// @notice value of collateral assets denominated in strike asset, used for mint collaterizedTotalAmount of this onToken\n /// updated upon every mint and burn by vaults owners\n uint256[] public collateralsValues;\n\n /// @notice amounts of collateralConstraints used to limit the maximum number of untrusted collateral tokens (0 - no limit)\n uint256[] internal collateralConstraints;\n\n /// @notice strike price with decimals = 8\n uint256 public strikePrice;\n\n /// @notice expiration timestamp of the option, represented as a unix timestamp\n uint256 public expiryTimestamp;\n\n /// @notice True if a put option, False if a call option\n bool public isPut;\n\n uint256 private constant STRIKE_PRICE_SCALE = 1e8;\n uint256 private constant STRIKE_PRICE_DIGITS = 8;\n\n /**\n * @notice initialize the onToken\n * @param _addressBook addressbook module\n * @param _underlyingAsset asset that the option references\n * @param _strikeAsset asset that the strike price is denominated in\n * @param _collateralAssets asset that is held as collateral against short/written options\n * @param _collateralConstraints limits the maximum number of untrusted collateral tokens (0 - no limit)\n * @param _strikePrice strike price with decimals = 8\n * @param _expiryTimestamp expiration timestamp of the option, represented as a unix timestamp\n * @param _isPut True if a put option, False if a call option\n */\n function init(\n address _addressBook,\n address _underlyingAsset,\n address _strikeAsset,\n address[] calldata _collateralAssets,\n uint256[] calldata _collateralConstraints,\n uint256 _strikePrice,\n uint256 _expiryTimestamp,\n bool _isPut\n ) external initializer {\n require(_collateralAssets.length > 0, \"collateralAssets must be non-empty\");\n require(\n _collateralAssets.length <= Constants.MAX_COLLATERAL_ASSETS,\n \"collateralAssets must be less than or equal to MAX_COLLATERAL_ASSETS\"\n );\n require(\n _collateralAssets.length == _collateralConstraints.length,\n \"_collateralConstraints and _collateralAssets must have same length\"\n );\n controller = AddressBookInterface(_addressBook).getController();\n underlyingAsset = _underlyingAsset;\n strikeAsset = _strikeAsset;\n collateralAssets = _collateralAssets;\n collateralConstraints = _collateralConstraints;\n collateralsAmounts = new uint256[](collateralAssets.length);\n collateralsValues = new uint256[](collateralAssets.length);\n strikePrice = _strikePrice;\n expiryTimestamp = _expiryTimestamp;\n isPut = _isPut;\n (string memory tokenName, string memory tokenSymbol) = _getNameAndSymbol();\n __ERC20_init_unchained(tokenName, tokenSymbol);\n __ERC20Permit_init(tokenName);\n }\n\n function decimals() public view virtual override returns (uint8) {\n return 8;\n }\n\n function getONtokenDetails()\n external\n view\n returns (\n address[] memory,\n uint256[] memory,\n uint256[] memory,\n uint256[] memory,\n address,\n address,\n uint256,\n uint256,\n bool,\n uint256\n )\n {\n uint256 collateralAssetsLength = collateralAssets.length;\n uint256[] memory collateralsDecimals = new uint256[](collateralAssetsLength);\n\n for (uint256 i = 0; i < collateralAssetsLength; i++) {\n collateralsDecimals[i] = ERC20Upgradeable(collateralAssets[i]).decimals();\n }\n\n return (\n collateralAssets,\n collateralsAmounts,\n collateralsValues,\n collateralsDecimals,\n underlyingAsset,\n strikeAsset,\n strikePrice,\n expiryTimestamp,\n isPut,\n collaterizedTotalAmount\n );\n }\n\n /**\n * @dev helper function to get full array of collateral assets\n */\n function getCollateralAssets() external view returns (address[] memory) {\n return collateralAssets;\n }\n\n /**\n * @dev helper function to get full array of collateral constraints\n */\n function getCollateralConstraints() external view returns (uint256[] memory) {\n return collateralConstraints;\n }\n\n /**\n * @dev helper function to get full array of collateral amounts\n */\n function getCollateralsAmounts() external view returns (uint256[] memory) {\n return collateralsAmounts;\n }\n\n /**\n * @dev helper function to get full array of collateral values\n */\n function getCollateralsValues() external view returns (uint256[] memory) {\n return collateralsValues;\n }\n\n /**\n * @notice mint onToken for an account\n * @dev Controller only method where access control is taken care of by _beforeTokenTransfer hook\n * @param account account to mint token to\n * @param amount amount to mint\n * @param collateralsAmountsForMint amounts of colateral assets to mint with\n * @param collateralsValuesForMint value of collateral assets in strike asset tokens used for this mint\n */\n function mintONtoken(\n address account,\n uint256 amount,\n uint256[] calldata collateralsAmountsForMint,\n uint256[] calldata collateralsValuesForMint\n ) external {\n require(msg.sender == controller, \"ONtoken: Only Controller can mint ONtokens\");\n\n uint256 collateralAssetsLength = collateralAssets.length;\n\n require(\n collateralAssetsLength == collateralsAmountsForMint.length,\n \"ONtoken: collateralAmountsForMint must have same length as collateralAssets\"\n );\n require(\n collateralAssetsLength == collateralsValuesForMint.length,\n \"ONtoken: collateralAssets and collateralsValuesForMint must be of same length\"\n );\n uint256[] memory _collateralsAmounts = collateralsAmounts;\n uint256[] memory _collateralsValues = collateralsValues;\n uint256[] memory _collateralConstraints = collateralConstraints;\n\n for (uint256 i = 0; i < collateralAssetsLength; i++) {\n _collateralsValues[i] = collateralsValuesForMint[i].add(_collateralsValues[i]);\n _collateralsAmounts[i] = _collateralsAmounts[i].add(collateralsAmountsForMint[i]);\n if (_collateralConstraints[i] > 0) {\n require(\n _collateralConstraints[i] >= _collateralsAmounts[i],\n \"ONtoken: collateral token constraint exceeded\"\n );\n }\n }\n collateralsValues = _collateralsValues;\n collateralsAmounts = _collateralsAmounts;\n collaterizedTotalAmount = collaterizedTotalAmount.add(amount);\n _mint(account, amount);\n }\n\n /**\n * @notice burn onToken from an account.\n * @dev Controller only method where access control is taken care of by _beforeTokenTransfer hook\n * @param account account to burn token from\n * @param amount amount to burn\n */\n function burnONtoken(address account, uint256 amount) external {\n require(msg.sender == controller, \"ONtoken: Only Controller can burn ONtokens\");\n _burn(account, amount);\n }\n\n /**\n * @notice reduces collaterization amounts and values of onToken, used when onToken is burned by vault's owner\n * @dev Controller only method where access control is taken care of by _beforeTokenTransfer hook\n */\n function reduceCollaterization(\n uint256[] calldata collateralsAmountsForReduce,\n uint256[] calldata collateralsValuesForReduce,\n uint256 onTokenAmountBurnt\n ) external {\n require(msg.sender == controller, \"ONtoken: Only Controller can burn ONtokens\");\n\n uint256 collateralAssetsLength = collateralAssets.length;\n\n require(\n collateralAssetsLength == collateralsValuesForReduce.length,\n \"ONtoken: collateralAssets and collateralsValuesForReduce must be of same length\"\n );\n require(\n collateralAssetsLength == collateralsAmountsForReduce.length,\n \"ONtoken: collateralAssets and collateralsAmountsForReduce must be of same length\"\n );\n for (uint256 i = 0; i < collateralAssetsLength; i++) {\n collateralsValues[i] = collateralsValues[i].sub(collateralsValuesForReduce[i]);\n collateralsAmounts[i] = collateralsAmounts[i].sub(collateralsAmountsForReduce[i]);\n }\n collaterizedTotalAmount = collaterizedTotalAmount.sub(onTokenAmountBurnt);\n }\n\n /**\n * @notice generates the name and symbol for an option\n * @dev this function uses a named return variable to avoid the stack-too-deep error\n * @return tokenName (ex: ETHUSDC 05-September-2020 200 Put USDC Collateral)\n * @return tokenSymbol (ex: oETHUSDC-05SEP20-200P)\n */\n function _getNameAndSymbol() internal view returns (string memory tokenName, string memory tokenSymbol) {\n string memory underlying = ERC20Upgradeable(underlyingAsset).symbol();\n string memory strike = ERC20Upgradeable(strikeAsset).symbol();\n string memory collateral = collateralAssets.length > 1\n ? string(abi.encodePacked(\"MULTI\", _uintTo2Chars(collateralAssets.length)))\n : ERC20Upgradeable(collateralAssets[0]).symbol();\n string memory displayStrikePrice = _getDisplayedStrikePrice(strikePrice);\n\n // convert expiry to a readable string\n (uint256 year, uint256 month, uint256 day) = BokkyPooBahsDateTimeLibrary.timestampToDate(expiryTimestamp);\n\n // get option type string\n (string memory typeSymbol, string memory typeFull) = _getOptionType(isPut);\n\n //get option month string\n (string memory monthSymbol, string memory monthFull) = _getMonth(month);\n\n // concatenated name string: ETHUSDC 05-September-2020 200 Put USDC Collateral\n tokenName = string(\n abi.encodePacked(\n underlying,\n strike,\n \" \",\n _uintTo2Chars(day),\n \"-\",\n monthFull,\n \"-\",\n Strings.toString(year),\n \" \",\n displayStrikePrice,\n typeFull,\n \" \",\n collateral,\n \" Collateral\"\n )\n );\n\n // concatenated symbol string: onETHUSDC/USDC-05SEP20-200P\n tokenSymbol = string(\n abi.encodePacked(\n \"on\",\n underlying,\n strike,\n \"/\",\n collateral,\n \"-\",\n _uintTo2Chars(day),\n monthSymbol,\n _uintTo2Chars(year),\n \"-\",\n displayStrikePrice,\n typeSymbol\n )\n );\n }\n\n /**\n * @dev convert strike price scaled by 1e8 to human readable number string\n * @param _strikePrice strike price scaled by 1e8\n * @return strike price string\n */\n function _getDisplayedStrikePrice(uint256 _strikePrice) internal pure returns (string memory) {\n uint256 remainder = _strikePrice.mod(STRIKE_PRICE_SCALE);\n uint256 quotient = _strikePrice.div(STRIKE_PRICE_SCALE);\n string memory quotientStr = Strings.toString(quotient);\n\n if (remainder == 0) return quotientStr;\n\n uint256 trailingZeroes;\n while (remainder.mod(10) == 0) {\n remainder = remainder / 10;\n trailingZeroes += 1;\n }\n\n // pad the number with \"1 + starting zeroes\"\n remainder += 10**(STRIKE_PRICE_DIGITS - trailingZeroes);\n\n string memory tmpStr = Strings.toString(remainder);\n tmpStr = _slice(tmpStr, 1, 1 + STRIKE_PRICE_DIGITS - trailingZeroes);\n\n string memory completeStr = string(abi.encodePacked(quotientStr, \".\", tmpStr));\n return completeStr;\n }\n\n /**\n * @dev return a representation of a number using 2 characters, adds a leading 0 if one digit, uses two trailing digits if a 3 digit number\n * @return 2 characters that corresponds to a number\n */\n function _uintTo2Chars(uint256 number) internal pure returns (string memory) {\n if (number > 99) number = number % 100;\n string memory str = Strings.toString(number);\n if (number < 10) {\n return string(abi.encodePacked(\"0\", str));\n }\n return str;\n }\n\n /**\n * @dev return string representation of option type\n * @return shortString a 1 character representation of option type (P or C)\n * @return longString a full length string of option type (Put or Call)\n */\n function _getOptionType(bool _isPut) internal pure returns (string memory shortString, string memory longString) {\n if (_isPut) {\n return (\"P\", \"Put\");\n } else {\n return (\"C\", \"Call\");\n }\n }\n\n /**\n * @dev cut string s into s[start:end]\n * @param _s the string to cut\n * @param _start the starting index\n * @param _end the ending index (excluded in the substring)\n */\n function _slice(\n string memory _s,\n uint256 _start,\n uint256 _end\n ) internal pure returns (string memory) {\n bytes memory a = new bytes(_end - _start);\n for (uint256 i = 0; i < _end - _start; i++) {\n a[i] = bytes(_s)[_start + i];\n }\n return string(a);\n }\n\n /**\n * @dev return string representation of a month\n * @return shortString a 3 character representation of a month (ex: SEP, DEC, etc)\n * @return longString a full length string of a month (ex: September, December, etc)\n */\n function _getMonth(uint256 _month) internal pure returns (string memory shortString, string memory longString) {\n if (_month == 1) {\n return (\"JAN\", \"January\");\n } else if (_month == 2) {\n return (\"FEB\", \"February\");\n } else if (_month == 3) {\n return (\"MAR\", \"March\");\n } else if (_month == 4) {\n return (\"APR\", \"April\");\n } else if (_month == 5) {\n return (\"MAY\", \"May\");\n } else if (_month == 6) {\n return (\"JUN\", \"June\");\n } else if (_month == 7) {\n return (\"JUL\", \"July\");\n } else if (_month == 8) {\n return (\"AUG\", \"August\");\n } else if (_month == 9) {\n return (\"SEP\", \"September\");\n } else if (_month == 10) {\n return (\"OCT\", \"October\");\n } else if (_month == 11) {\n return (\"NOV\", \"November\");\n } else {\n return (\"DEC\", \"December\");\n }\n }\n}\n"
},
"contracts/neuron-options/interfaces/AddressBookInterface.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0\npragma solidity 0.8.9;\n\ninterface AddressBookInterface {\n /* Getters */\n\n function getONtokenImpl() external view returns (address);\n\n function getONtokenFactory() external view returns (address);\n\n function getWhitelist() external view returns (address);\n\n function getController() external view returns (address);\n\n function getOracle() external view returns (address);\n\n function getMarginPool() external view returns (address);\n\n function getMarginCalculator() external view returns (address);\n\n function getLiquidationManager() external view returns (address);\n\n function getAddress(bytes32 _id) external view returns (address);\n\n /* Setters */\n\n function setONtokenImpl(address _onTokenImpl) external;\n\n function setONtokenFactory(address _factory) external;\n\n function setOracleImpl(address _onTokenImpl) external;\n\n function setWhitelist(address _whitelist) external;\n\n function setController(address _controller) external;\n\n function setMarginPool(address _marginPool) external;\n\n function setMarginCalculator(address _calculator) external;\n\n function setAddress(bytes32 _id, address _newImpl) external;\n}\n"
},
"contracts/neuron-options/packages/BokkyPooBahsDateTimeLibrary.sol": {
"content": "// SPDX-License-Identifier: GPL-3.0\n\npragma solidity 0.8.9;\n\n// ----------------------------------------------------------------------------\n// BokkyPooBah's DateTime Library v1.01\n//\n// A gas-efficient Solidity date and time library\n//\n// https://github.com/bokkypoobah/BokkyPooBahsDateTimeLibrary\n//\n// Tested date range 1970/01/01 to 2345/12/31\n//\n// Conventions:\n// Unit | Range | Notes\n// :-------- |:-------------:|:-----\n// timestamp | >= 0 | Unix timestamp, number of seconds since 1970/01/01 00:00:00 UTC\n// year | 1970 ... 2345 |\n// month | 1 ... 12 |\n// day | 1 ... 31 |\n// hour | 0 ... 23 |\n// minute | 0 ... 59 |\n// second | 0 ... 59 |\n// dayOfWeek | 1 ... 7 | 1 = Monday, ..., 7 = Sunday\n//\n//\n// Enjoy. (c) BokkyPooBah / Bok Consulting Pty Ltd 2018-2019. The MIT Licence.\n// ----------------------------------------------------------------------------\n\n// version v1.01\nlibrary BokkyPooBahsDateTimeLibrary {\n uint256 constant SECONDS_PER_DAY = 24 * 60 * 60;\n int256 constant OFFSET19700101 = 2440588;\n\n // ------------------------------------------------------------------------\n // Calculate year/month/day from the number of days since 1970/01/01 using\n // the date conversion algorithm from\n // http://aa.usno.navy.mil/faq/docs/JD_Formula.php\n // and adding the offset 2440588 so that 1970/01/01 is day 0\n //\n // int L = days + 68569 + offset\n // int N = 4 * L / 146097\n // L = L - (146097 * N + 3) / 4\n // year = 4000 * (L + 1) / 1461001\n // L = L - 1461 * year / 4 + 31\n // month = 80 * L / 2447\n // dd = L - 2447 * month / 80\n // L = month / 11\n // month = month + 2 - 12 * L\n // year = 100 * (N - 49) + year + L\n // ------------------------------------------------------------------------\n function _daysToDate(uint256 _days)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n int256 __days = int256(_days);\n\n int256 L = __days + 68569 + OFFSET19700101;\n int256 N = (4 * L) / 146097;\n L = L - (146097 * N + 3) / 4;\n int256 _year = (4000 * (L + 1)) / 1461001;\n L = L - (1461 * _year) / 4 + 31;\n int256 _month = (80 * L) / 2447;\n int256 _day = L - (2447 * _month) / 80;\n L = _month / 11;\n _month = _month + 2 - 12 * L;\n _year = 100 * (N - 49) + _year + L;\n\n year = uint256(_year);\n month = uint256(_month);\n day = uint256(_day);\n }\n\n function timestampToDate(uint256 timestamp)\n internal\n pure\n returns (\n uint256 year,\n uint256 month,\n uint256 day\n )\n {\n (year, month, day) = _daysToDate(timestamp / SECONDS_PER_DAY);\n }\n}\n"
}
}
} |