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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {ContractOwnershipStorage} from "./libraries/ContractOwnershipStorage.sol";
import {ContractOwnershipBase} from "./base/ContractOwnershipBase.sol";
import {InterfaceDetection} from "./../introspection/InterfaceDetection.sol";

/// @title ERC173 Contract Ownership Standard (immutable version).
/// @dev See https://eips.ethereum.org/EIPS/eip-173
/// @dev This contract is to be used via inheritance in an immutable (non-proxied) implementation.
abstract contract ContractOwnership is ContractOwnershipBase, InterfaceDetection {
    using ContractOwnershipStorage for ContractOwnershipStorage.Layout;

    /// @notice Initializes the storage with an initial contract owner.
    /// @notice Marks the following ERC165 interface(s) as supported: ERC173.
    /// @dev Emits an {OwnershipTransferred} if `initialOwner` is not the zero address.
    /// @param initialOwner the initial contract owner.
    constructor(address initialOwner) {
        ContractOwnershipStorage.layout().constructorInit(initialOwner);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC173} from "./../interfaces/IERC173.sol";
import {ContractOwnershipStorage} from "./../libraries/ContractOwnershipStorage.sol";
import {Context} from "@openzeppelin/contracts/utils/Context.sol";

/// @title ERC173 Contract Ownership Standard (proxiable version).
/// @dev See https://eips.ethereum.org/EIPS/eip-173
/// @dev This contract is to be used via inheritance in a proxied implementation.
/// @dev Note: This contract requires ERC165 (Interface Detection Standard).
abstract contract ContractOwnershipBase is Context, IERC173 {
    using ContractOwnershipStorage for ContractOwnershipStorage.Layout;

    /// @inheritdoc IERC173
    function owner() public view virtual override returns (address) {
        return ContractOwnershipStorage.layout().owner();
    }

    /// @inheritdoc IERC173
    function transferOwnership(address newOwner) public virtual override {
        ContractOwnershipStorage.layout().transferOwnership(_msgSender(), newOwner);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title ERC-173 Contract Ownership Standard
/// @dev See https://eips.ethereum.org/EIPS/eip-173
/// @dev Note: the ERC-165 identifier for this interface is 0x7f5828d0
interface IERC173 {
    /// @notice Emitted when the contract ownership changes.
    /// @param previousOwner the previous contract owner.
    /// @param newOwner the new contract owner.
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /// @notice Sets the address of the new contract owner.
    /// @dev Reverts if the sender is not the contract owner.
    /// @dev Emits an {OwnershipTransferred} event if `newOwner` is different from the current contract owner.
    /// @param newOwner The address of the new contract owner. Using the zero address means renouncing ownership.
    function transferOwnership(address newOwner) external;

    /// @notice Gets the address of the contract owner.
    /// @return contractOwner The address of the contract owner.
    function owner() external view returns (address contractOwner);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC173} from "./../interfaces/IERC173.sol";
import {ProxyInitialization} from "./../../proxy/libraries/ProxyInitialization.sol";
import {InterfaceDetectionStorage} from "./../../introspection/libraries/InterfaceDetectionStorage.sol";

library ContractOwnershipStorage {
    using ContractOwnershipStorage for ContractOwnershipStorage.Layout;
    using InterfaceDetectionStorage for InterfaceDetectionStorage.Layout;

    struct Layout {
        address contractOwner;
    }

    bytes32 internal constant LAYOUT_STORAGE_SLOT = bytes32(uint256(keccak256("animoca.core.access.ContractOwnership.storage")) - 1);
    bytes32 internal constant PROXY_INIT_PHASE_SLOT = bytes32(uint256(keccak256("animoca.core.access.ContractOwnership.phase")) - 1);

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /// @notice Initializes the storage with an initial contract owner (immutable version).
    /// @notice Marks the following ERC165 interface(s) as supported: ERC173.
    /// @dev Note: This function should be called ONLY in the constructor of an immutable (non-proxied) contract.
    /// @dev Emits an {OwnershipTransferred} if `initialOwner` is not the zero address.
    /// @param initialOwner The initial contract owner.
    function constructorInit(Layout storage s, address initialOwner) internal {
        if (initialOwner != address(0)) {
            s.contractOwner = initialOwner;
            emit OwnershipTransferred(address(0), initialOwner);
        }
        InterfaceDetectionStorage.layout().setSupportedInterface(type(IERC173).interfaceId, true);
    }

    /// @notice Initializes the storage with an initial contract owner (proxied version).
    /// @notice Sets the proxy initialization phase to `1`.
    /// @notice Marks the following ERC165 interface(s) as supported: ERC173.
    /// @dev Note: This function should be called ONLY in the init function of a proxied contract.
    /// @dev Reverts if the proxy initialization phase is set to `1` or above.
    /// @dev Emits an {OwnershipTransferred} if `initialOwner` is not the zero address.
    /// @param initialOwner The initial contract owner.
    function proxyInit(Layout storage s, address initialOwner) internal {
        ProxyInitialization.setPhase(PROXY_INIT_PHASE_SLOT, 1);
        s.constructorInit(initialOwner);
    }

    /// @notice Sets the address of the new contract owner.
    /// @dev Reverts if `sender` is not the contract owner.
    /// @dev Emits an {OwnershipTransferred} event if `newOwner` is different from the current contract owner.
    /// @param newOwner The address of the new contract owner. Using the zero address means renouncing ownership.
    function transferOwnership(Layout storage s, address sender, address newOwner) internal {
        address previousOwner = s.contractOwner;
        require(sender == previousOwner, "Ownership: not the owner");
        if (previousOwner != newOwner) {
            s.contractOwner = newOwner;
            emit OwnershipTransferred(previousOwner, newOwner);
        }
    }

    /// @notice Gets the address of the contract owner.
    /// @return contractOwner The address of the contract owner.
    function owner(Layout storage s) internal view returns (address contractOwner) {
        return s.contractOwner;
    }

    /// @notice Ensures that an account is the contract owner.
    /// @dev Reverts if `account` is not the contract owner.
    /// @param account The account.
    function enforceIsContractOwner(Layout storage s, address account) internal view {
        require(account == s.contractOwner, "Ownership: not the owner");
    }

    function layout() internal pure returns (Layout storage s) {
        bytes32 position = LAYOUT_STORAGE_SLOT;
        assembly {
            s.slot := position
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC165} from "./interfaces/IERC165.sol";
import {InterfaceDetectionStorage} from "./libraries/InterfaceDetectionStorage.sol";

/// @title ERC165 Interface Detection Standard (immutable or proxiable version).
/// @dev This contract is to be used via inheritance in an immutable (non-proxied) or proxied implementation.
abstract contract InterfaceDetection is IERC165 {
    using InterfaceDetectionStorage for InterfaceDetectionStorage.Layout;

    /// @inheritdoc IERC165
    function supportsInterface(bytes4 interfaceId) external view override returns (bool) {
        return InterfaceDetectionStorage.layout().supportsInterface(interfaceId);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title ERC165 Interface Detection Standard.
/// @dev See https://eips.ethereum.org/EIPS/eip-165.
/// @dev Note: The ERC-165 identifier for this interface is 0x01ffc9a7.
interface IERC165 {
    /// @notice Returns whether this contract implements a given interface.
    /// @dev Note: This function call must use less than 30 000 gas.
    /// @param interfaceId the interface identifier to test.
    /// @return supported True if the interface is supported, false if `interfaceId` is `0xffffffff` or if the interface is not supported.
    function supportsInterface(bytes4 interfaceId) external view returns (bool supported);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC165} from "./../interfaces/IERC165.sol";

library InterfaceDetectionStorage {
    struct Layout {
        mapping(bytes4 => bool) supportedInterfaces;
    }

    bytes32 internal constant LAYOUT_STORAGE_SLOT = bytes32(uint256(keccak256("animoca.core.introspection.InterfaceDetection.storage")) - 1);

    bytes4 internal constant ILLEGAL_INTERFACE_ID = 0xffffffff;

    /// @notice Sets or unsets an ERC165 interface.
    /// @dev Reverts if `interfaceId` is `0xffffffff`.
    /// @param interfaceId the interface identifier.
    /// @param supported True to set the interface, false to unset it.
    function setSupportedInterface(Layout storage s, bytes4 interfaceId, bool supported) internal {
        require(interfaceId != ILLEGAL_INTERFACE_ID, "InterfaceDetection: wrong value");
        s.supportedInterfaces[interfaceId] = supported;
    }

    /// @notice Returns whether this contract implements a given interface.
    /// @dev Note: This function call must use less than 30 000 gas.
    /// @param interfaceId The interface identifier to test.
    /// @return supported True if the interface is supported, false if `interfaceId` is `0xffffffff` or if the interface is not supported.
    function supportsInterface(Layout storage s, bytes4 interfaceId) internal view returns (bool supported) {
        if (interfaceId == ILLEGAL_INTERFACE_ID) {
            return false;
        }
        if (interfaceId == type(IERC165).interfaceId) {
            return true;
        }
        return s.supportedInterfaces[interfaceId];
    }

    function layout() internal pure returns (Layout storage s) {
        bytes32 position = LAYOUT_STORAGE_SLOT;
        assembly {
            s.slot := position
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IForwarderRegistry} from "./interfaces/IForwarderRegistry.sol";
import {IERC2771} from "./interfaces/IERC2771.sol";
import {ForwarderRegistryContextBase} from "./base/ForwarderRegistryContextBase.sol";

/// @title Meta-Transactions Forwarder Registry Context (immutable version).
/// @dev This contract is to be used via inheritance in an immutable (non-proxied) implementation.
/// @dev Derived from https://github.com/wighawag/universal-forwarder (MIT licence)
abstract contract ForwarderRegistryContext is ForwarderRegistryContextBase, IERC2771 {
    constructor(IForwarderRegistry forwarderRegistry_) ForwarderRegistryContextBase(forwarderRegistry_) {}

    function forwarderRegistry() external view returns (IForwarderRegistry) {
        return _forwarderRegistry;
    }

    /// @inheritdoc IERC2771
    function isTrustedForwarder(address forwarder) external view virtual override returns (bool) {
        return forwarder == address(_forwarderRegistry);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IForwarderRegistry} from "./../interfaces/IForwarderRegistry.sol";
import {ERC2771Calldata} from "./../libraries/ERC2771Calldata.sol";

/// @title Meta-Transactions Forwarder Registry Context (proxiable version).
/// @dev This contract is to be used via inheritance in a proxied implementation.
/// @dev Derived from https://github.com/wighawag/universal-forwarder (MIT licence)
abstract contract ForwarderRegistryContextBase {
    IForwarderRegistry internal immutable _forwarderRegistry;

    constructor(IForwarderRegistry forwarderRegistry) {
        _forwarderRegistry = forwarderRegistry;
    }

    /// @notice Returns the message sender depending on the ForwarderRegistry-based meta-transaction context.
    function _msgSender() internal view virtual returns (address) {
        // Optimised path in case of an EOA-initiated direct tx to the contract or a call from a contract not complying with EIP-2771
        // solhint-disable-next-line avoid-tx-origin
        if (msg.sender == tx.origin || msg.data.length < 24) {
            return msg.sender;
        }

        address sender = ERC2771Calldata.msgSender();

        // Return the EIP-2771 calldata-appended sender address if the message was forwarded by the ForwarderRegistry or an approved forwarder
        if (msg.sender == address(_forwarderRegistry) || _forwarderRegistry.isApprovedForwarder(sender, msg.sender)) {
            return sender;
        }

        return msg.sender;
    }

    /// @notice Returns the message data depending on the ForwarderRegistry-based meta-transaction context.
    function _msgData() internal view virtual returns (bytes calldata) {
        // Optimised path in case of an EOA-initiated direct tx to the contract or a call from a contract not complying with EIP-2771
        // solhint-disable-next-line avoid-tx-origin
        if (msg.sender == tx.origin || msg.data.length < 24) {
            return msg.data;
        }

        // Return the EIP-2771 calldata (minus the appended sender) if the message was forwarded by the ForwarderRegistry or an approved forwarder
        if (msg.sender == address(_forwarderRegistry) || _forwarderRegistry.isApprovedForwarder(ERC2771Calldata.msgSender(), msg.sender)) {
            return ERC2771Calldata.msgData();
        }

        return msg.data;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title Secure Protocol for Native Meta Transactions.
/// @dev See https://eips.ethereum.org/EIPS/eip-2771
interface IERC2771 {
    /// @notice Checks whether a forwarder is trusted.
    /// @param forwarder The forwarder to check.
    /// @return isTrusted True if `forwarder` is trusted, false if not.
    function isTrustedForwarder(address forwarder) external view returns (bool isTrusted);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title Universal Meta-Transactions Forwarder Registry.
/// @dev Derived from https://github.com/wighawag/universal-forwarder (MIT licence)
interface IForwarderRegistry {
    /// @notice Checks whether an account is as an approved meta-transaction forwarder for a sender account.
    /// @param sender The sender account.
    /// @param forwarder The forwarder account.
    /// @return isApproved True if `forwarder` is an approved meta-transaction forwarder for `sender`, false otherwise.
    function isApprovedForwarder(address sender, address forwarder) external view returns (bool isApproved);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @dev Derived from https://github.com/OpenZeppelin/openzeppelin-contracts (MIT licence)
/// @dev See https://eips.ethereum.org/EIPS/eip-2771
library ERC2771Calldata {
    /// @notice Returns the sender address appended at the end of the calldata, as specified in EIP-2771.
    function msgSender() internal pure returns (address sender) {
        assembly {
            sender := shr(96, calldataload(sub(calldatasize(), 20)))
        }
    }

    /// @notice Returns the calldata while omitting the appended sender address, as specified in EIP-2771.
    function msgData() internal pure returns (bytes calldata data) {
        unchecked {
            return msg.data[:msg.data.length - 20];
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {StorageSlot} from "@openzeppelin/contracts/utils/StorageSlot.sol";

/// @notice Multiple calls protection for storage-modifying proxy initialization functions.
library ProxyInitialization {
    /// @notice Sets the initialization phase during a storage-modifying proxy initialization function.
    /// @dev Reverts if `phase` has been reached already.
    /// @param storageSlot the storage slot where `phase` is stored.
    /// @param phase the initialization phase.
    function setPhase(bytes32 storageSlot, uint256 phase) internal {
        StorageSlot.Uint256Slot storage currentVersion = StorageSlot.getUint256Slot(storageSlot);
        require(currentVersion.value < phase, "Storage: phase reached");
        currentVersion.value = phase;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {TokenRecoveryBase} from "./base/TokenRecoveryBase.sol";
import {ContractOwnership} from "./../access/ContractOwnership.sol";

/// @title Recovery mechanism for ETH/ERC20/ERC721 tokens accidentally sent to this contract (immutable version).
/// @dev This contract is to be used via inheritance in an immutable (non-proxied) implementation.
abstract contract TokenRecovery is TokenRecoveryBase, ContractOwnership {

}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC20} from "@openzeppelin/contracts/interfaces/IERC20.sol";
import {IERC721} from "./../../token/ERC721/interfaces/IERC721.sol";
import {ContractOwnershipStorage} from "./../../access/libraries/ContractOwnershipStorage.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {Context} from "@openzeppelin/contracts/utils/Context.sol";
import {Address} from "@openzeppelin/contracts/utils/Address.sol";

/// @title Recovery mechanism for ETH/ERC20/ERC721 tokens accidentally sent to this contract (proxiable version).
/// @dev This contract is to be used via inheritance in a proxied implementation.
/// @dev Note: This contract requires ERC173 (Contract Ownership standard).
contract TokenRecoveryBase is Context {
    using ContractOwnershipStorage for ContractOwnershipStorage.Layout;
    using SafeERC20 for IERC20;
    using Address for address payable;

    /// @notice Extract ETH tokens which were accidentally sent to the contract to a list of accounts.
    /// @dev Note: While contracts can generally prevent accidental ETH transfer by implementating a reverting
    ///  `receive()` function, this can still be bypassed in a `selfdestruct(address)` scenario.
    /// @dev Warning: this function should be overriden for contracts which are supposed to hold ETH tokens
    ///  so that the extraction is limited to only amounts sent accidentally.
    /// @dev Reverts if the sender is not the contract owner.
    /// @dev Reverts if `accounts` and `amounts` do not have the same length.
    /// @dev Reverts if one of the ETH transfers fails for any reason.
    /// @param accounts the list of accounts to transfer the tokens to.
    /// @param amounts the list of token amounts to transfer.
    function recoverETH(address payable[] calldata accounts, uint256[] calldata amounts) external virtual {
        ContractOwnershipStorage.layout().enforceIsContractOwner(_msgSender());
        uint256 length = accounts.length;
        require(length == amounts.length, "Recovery: inconsistent arrays");
        unchecked {
            for (uint256 i; i != length; ++i) {
                accounts[i].sendValue(amounts[i]);
            }
        }
    }

    /// @notice Extract ERC20 tokens which were accidentally sent to the contract to a list of accounts.
    /// @dev Warning: this function should be overriden for contracts which are supposed to hold ERC20 tokens
    ///  so that the extraction is limited to only amounts sent accidentally.
    /// @dev Reverts if the sender is not the contract owner.
    /// @dev Reverts if `accounts`, `tokens` and `amounts` do not have the same length.
    /// @dev Reverts if one of the ERC20 transfers fails for any reason.
    /// @param accounts the list of accounts to transfer the tokens to.
    /// @param tokens the list of ERC20 token addresses.
    /// @param amounts the list of token amounts to transfer.
    function recoverERC20s(address[] calldata accounts, IERC20[] calldata tokens, uint256[] calldata amounts) external virtual {
        ContractOwnershipStorage.layout().enforceIsContractOwner(_msgSender());
        uint256 length = accounts.length;
        require(length == tokens.length && length == amounts.length, "Recovery: inconsistent arrays");
        unchecked {
            for (uint256 i; i != length; ++i) {
                tokens[i].safeTransfer(accounts[i], amounts[i]);
            }
        }
    }

    /// @notice Extract ERC721 tokens which were accidentally sent to the contract to a list of accounts.
    /// @dev Warning: this function should be overriden for contracts which are supposed to hold ERC721 tokens
    ///  so that the extraction is limited to only tokens sent accidentally.
    /// @dev Reverts if the sender is not the contract owner.
    /// @dev Reverts if `accounts`, `contracts` and `amounts` do not have the same length.
    /// @dev Reverts if one of the ERC721 transfers fails for any reason.
    /// @param accounts the list of accounts to transfer the tokens to.
    /// @param contracts the list of ERC721 contract addresses.
    /// @param tokenIds the list of token ids to transfer.
    function recoverERC721s(address[] calldata accounts, IERC721[] calldata contracts, uint256[] calldata tokenIds) external virtual {
        ContractOwnershipStorage.layout().enforceIsContractOwner(_msgSender());
        uint256 length = accounts.length;
        require(length == contracts.length && length == tokenIds.length, "Recovery: inconsistent arrays");
        unchecked {
            for (uint256 i; i != length; ++i) {
                contracts[i].transferFrom(address(this), accounts[i], tokenIds[i]);
            }
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {ERC20Storage} from "./libraries/ERC20Storage.sol";
import {ERC20Base} from "./base/ERC20Base.sol";
import {InterfaceDetection} from "./../../introspection/InterfaceDetection.sol";

/// @title ERC20 Fungible Token Standard (immutable version).
/// @dev This contract is to be used via inheritance in an immutable (non-proxied) implementation.
abstract contract ERC20 is ERC20Base, InterfaceDetection {
    /// @notice Marks the following ERC165 interface(s) as supported: ERC20, ERC20Allowance.
    constructor() {
        ERC20Storage.init();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {ERC20Storage} from "./libraries/ERC20Storage.sol";
import {ERC20BatchTransfersBase} from "./base/ERC20BatchTransfersBase.sol";

/// @title ERC20 Fungible Token Standard, optional extension: Batch Transfers (immutable version).
/// @dev This contract is to be used via inheritance in an immutable (non-proxied) implementation.
abstract contract ERC20BatchTransfers is ERC20BatchTransfersBase {
    /// @notice Marks the following ERC165 interface(s) as supported: ERC20BatchTransfers.
    constructor() {
        ERC20Storage.initERC20BatchTransfers();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {ERC20DetailedStorage} from "./libraries/ERC20DetailedStorage.sol";
import {ERC20DetailedBase} from "./base/ERC20DetailedBase.sol";

/// @title ERC20 Fungible Token Standard, optional extension: Detailed (immutable version).
/// @dev This contract is to be used via inheritance in an immutable (non-proxied) implementation.
abstract contract ERC20Detailed is ERC20DetailedBase {
    using ERC20DetailedStorage for ERC20DetailedStorage.Layout;

    /// @notice Initializes the storage with the token details.
    /// @notice Marks the following ERC165 interface(s) as supported: ERC20Detailed.
    /// @param tokenName The token name.
    /// @param tokenSymbol The token symbol.
    /// @param tokenDecimals The token decimals.
    constructor(string memory tokenName, string memory tokenSymbol, uint8 tokenDecimals) {
        ERC20DetailedStorage.layout().constructorInit(tokenName, tokenSymbol, tokenDecimals);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {ERC20MetadataStorage} from "./libraries/ERC20MetadataStorage.sol";
import {ERC20MetadataBase} from "./base/ERC20MetadataBase.sol";
import {ContractOwnership} from "./../../access/ContractOwnership.sol";

/// @title ERC20 Fungible Token Standard, optional extension: Metadata (immutable version).
/// @dev This contract is to be used via inheritance in an immutable (non-proxied) implementation.
abstract contract ERC20Metadata is ERC20MetadataBase, ContractOwnership {
    using ERC20MetadataStorage for ERC20MetadataStorage.Layout;

    /// @notice Marks the following ERC165 interface(s) as supported: ERC20Metadata.
    constructor() {
        ERC20MetadataStorage.init();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC20Permit} from "./interfaces/IERC20Permit.sol";
import {ERC20PermitStorage} from "./libraries/ERC20PermitStorage.sol";
import {ERC20PermitBase} from "./base/ERC20PermitBase.sol";

/// @title ERC20 Fungible Token Standard, optional extension: Permit (immutable version).
/// @dev This contract is to be used via inheritance in an immutable (non-proxied) implementation.
/// @dev Note: This contract requires ERC20Detailed.
abstract contract ERC20Permit is ERC20PermitBase {
    using ERC20PermitStorage for ERC20PermitStorage.Layout;

    /// @notice Marks the following ERC165 interface(s) as supported: ERC20Permit.
    constructor() {
        ERC20PermitStorage.init();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {ERC20Storage} from "./libraries/ERC20Storage.sol";
import {ERC20SafeTransfersBase} from "./base/ERC20SafeTransfersBase.sol";

/// @title ERC20 Fungible Token Standard, optional extension: Safe Transfers (immutable version).
/// @dev This contract is to be used via inheritance in an immutable (non-proxied) implementation.
abstract contract ERC20SafeTransfers is ERC20SafeTransfersBase {
    /// @notice Marks the following ERC165 interface(s) as supported: ERC20SafeTransfers.
    constructor() {
        ERC20Storage.initERC20SafeTransfers();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC20} from "./../interfaces/IERC20.sol";
import {IERC20Allowance} from "./../interfaces/IERC20Allowance.sol";
import {ERC20Storage} from "./../libraries/ERC20Storage.sol";
import {Context} from "@openzeppelin/contracts/utils/Context.sol";

/// @title ERC20 Fungible Token Standard (proxiable version).
/// @dev This contract is to be used via inheritance in a proxied implementation.
/// @dev Note: This contract requires ERC165 (Interface Detection Standard).
abstract contract ERC20Base is Context, IERC20, IERC20Allowance {
    using ERC20Storage for ERC20Storage.Layout;

    /// @inheritdoc IERC20
    function approve(address spender, uint256 value) external virtual override returns (bool result) {
        ERC20Storage.layout().approve(_msgSender(), spender, value);
        return true;
    }

    /// @inheritdoc IERC20
    function transfer(address to, uint256 value) external virtual override returns (bool result) {
        ERC20Storage.layout().transfer(_msgSender(), to, value);
        return true;
    }

    /// @inheritdoc IERC20
    function transferFrom(address from, address to, uint256 value) external virtual override returns (bool result) {
        ERC20Storage.layout().transferFrom(_msgSender(), from, to, value);
        return true;
    }

    /// @inheritdoc IERC20Allowance
    function increaseAllowance(address spender, uint256 addedValue) external virtual override returns (bool result) {
        ERC20Storage.layout().increaseAllowance(_msgSender(), spender, addedValue);
        return true;
    }

    /// @inheritdoc IERC20Allowance
    function decreaseAllowance(address spender, uint256 subtractedValue) external virtual override returns (bool result) {
        ERC20Storage.layout().decreaseAllowance(_msgSender(), spender, subtractedValue);
        return true;
    }

    /// @inheritdoc IERC20
    function totalSupply() external view override returns (uint256 supply) {
        return ERC20Storage.layout().totalSupply();
    }

    /// @inheritdoc IERC20
    function balanceOf(address owner) external view override returns (uint256 balance) {
        return ERC20Storage.layout().balanceOf(owner);
    }

    /// @inheritdoc IERC20
    function allowance(address owner, address spender) public view virtual override returns (uint256 value) {
        return ERC20Storage.layout().allowance(owner, spender);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC20BatchTransfers} from "./../interfaces/IERC20BatchTransfers.sol";
import {ERC20Storage} from "./../libraries/ERC20Storage.sol";
import {Context} from "@openzeppelin/contracts/utils/Context.sol";

/// @title ERC20 Fungible Token Standard, optional extension: Batch Transfers (proxiable version).
/// @dev This contract is to be used via inheritance in a proxied implementation.
/// @dev Note: This contract requires ERC20 (Fungible Token Standard).
abstract contract ERC20BatchTransfersBase is Context, IERC20BatchTransfers {
    using ERC20Storage for ERC20Storage.Layout;

    /// @inheritdoc IERC20BatchTransfers
    function batchTransfer(address[] calldata recipients, uint256[] calldata values) external virtual override returns (bool) {
        ERC20Storage.layout().batchTransfer(_msgSender(), recipients, values);
        return true;
    }

    /// @inheritdoc IERC20BatchTransfers
    function batchTransferFrom(address from, address[] calldata recipients, uint256[] calldata values) external virtual override returns (bool) {
        ERC20Storage.layout().batchTransferFrom(_msgSender(), from, recipients, values);
        return true;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC20Detailed} from "./../interfaces/IERC20Detailed.sol";
import {ERC20DetailedStorage} from "./../libraries/ERC20DetailedStorage.sol";

/// @title ERC20 Fungible Token Standard, optional extension: Detailed (proxiable version).
/// @dev This contract is to be used via inheritance in a proxied implementation.
/// @dev Note: This contract requires ERC20 (Fungible Token Standard).
abstract contract ERC20DetailedBase is IERC20Detailed {
    using ERC20DetailedStorage for ERC20DetailedStorage.Layout;

    /// @inheritdoc IERC20Detailed
    function name() external view override returns (string memory) {
        return ERC20DetailedStorage.layout().name();
    }

    /// @inheritdoc IERC20Detailed
    function symbol() external view override returns (string memory) {
        return ERC20DetailedStorage.layout().symbol();
    }

    /// @inheritdoc IERC20Detailed
    function decimals() external view override returns (uint8) {
        return ERC20DetailedStorage.layout().decimals();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC20Metadata} from "./../interfaces/IERC20Metadata.sol";
import {ERC20MetadataStorage} from "./../libraries/ERC20MetadataStorage.sol";
import {ContractOwnershipStorage} from "./../../../access/libraries/ContractOwnershipStorage.sol";
import {Context} from "@openzeppelin/contracts/utils/Context.sol";

/// @title ERC20 Fungible Token Standard, optional extension: Metadata (proxiable version).
/// @dev This contract is to be used via inheritance in a proxied implementation.
/// @dev Note: This contract requires ERC20 (Fungible Token Standard).
/// @dev Note: This contract requires ERC173 (Contract Ownership standard).
abstract contract ERC20MetadataBase is Context, IERC20Metadata {
    using ERC20MetadataStorage for ERC20MetadataStorage.Layout;
    using ContractOwnershipStorage for ContractOwnershipStorage.Layout;

    /// @notice Sets the token URI.
    /// @dev Reverts if the sender is not the contract owner.
    /// @param uri The token URI.
    function setTokenURI(string calldata uri) external {
        ContractOwnershipStorage.layout().enforceIsContractOwner(_msgSender());
        ERC20MetadataStorage.layout().setTokenURI(uri);
    }

    /// @inheritdoc IERC20Metadata
    function tokenURI() external view override returns (string memory) {
        return ERC20MetadataStorage.layout().tokenURI();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC20Permit} from "./../interfaces/IERC20Permit.sol";
import {ERC20PermitStorage} from "./../libraries/ERC20PermitStorage.sol";
import {Context} from "@openzeppelin/contracts/utils/Context.sol";

/// @title ERC20 Fungible Token Standard, optional extension: Permit (proxiable version).
/// @dev This contract is to be used via inheritance in a proxied implementation.
/// @dev Note: This contract requires ERC20 (Fungible Token Standard).
/// @dev Note: This contract requires ERC20Detailed.
abstract contract ERC20PermitBase is Context, IERC20Permit {
    using ERC20PermitStorage for ERC20PermitStorage.Layout;

    /// @inheritdoc IERC20Permit
    function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external override {
        ERC20PermitStorage.layout().permit(owner, spender, value, deadline, v, r, s);
    }

    /// @inheritdoc IERC20Permit
    function nonces(address owner) external view override returns (uint256) {
        return ERC20PermitStorage.layout().nonces(owner);
    }

    /// @inheritdoc IERC20Permit
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view override returns (bytes32) {
        return ERC20PermitStorage.DOMAIN_SEPARATOR();
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC20SafeTransfers} from "./../interfaces/IERC20SafeTransfers.sol";
import {ERC20Storage} from "./../libraries/ERC20Storage.sol";
import {Context} from "@openzeppelin/contracts/utils/Context.sol";

/// @title ERC20 Fungible Token Standard, optional extension: Safe Transfers (proxiable version).
/// @dev This contract is to be used via inheritance in a proxied implementation.
/// @dev Note: This contract requires ERC20 (Fungible Token Standard).
abstract contract ERC20SafeTransfersBase is Context, IERC20SafeTransfers {
    using ERC20Storage for ERC20Storage.Layout;

    /// @inheritdoc IERC20SafeTransfers
    function safeTransfer(address to, uint256 value, bytes calldata data) external virtual override returns (bool) {
        ERC20Storage.layout().safeTransfer(_msgSender(), to, value, data);
        return true;
    }

    /// @inheritdoc IERC20SafeTransfers
    function safeTransferFrom(address from, address to, uint256 value, bytes calldata data) external virtual override returns (bool) {
        ERC20Storage.layout().safeTransferFrom(_msgSender(), from, to, value, data);
        return true;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title ERC20 Token Standard, basic interface.
/// @dev See https://eips.ethereum.org/EIPS/eip-20
/// @dev Note: The ERC-165 identifier for this interface is 0x36372b07.
interface IERC20 {
    /// @notice Emitted when tokens are transferred, including zero value transfers.
    /// @param from The account where the transferred tokens are withdrawn from.
    /// @param to The account where the transferred tokens are deposited to.
    /// @param value The amount of tokens being transferred.
    event Transfer(address indexed from, address indexed to, uint256 value);

    /// @notice Emitted when an approval is set.
    /// @param owner The account granting an allowance to `spender`.
    /// @param spender The account being granted an allowance from `owner`.
    /// @param value The allowance amount being granted.
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /// @notice Sets the allowance to an account from the sender.
    /// @notice Warning: Beware that changing an allowance with this method brings the risk that someone may use both the old and
    ///  the new allowance by unfortunate transaction ordering. One possible solution to mitigate this race condition is to first reduce
    ///  the spender's allowance to 0 and set the desired value afterwards: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
    /// @dev Reverts if `spender` is the zero address.
    /// @dev Emits an {Approval} event.
    /// @param spender The account being granted the allowance by the message caller.
    /// @param value The allowance amount to grant.
    /// @return result Whether the operation succeeded.
    function approve(address spender, uint256 value) external returns (bool result);

    /// @notice Transfers an amount of tokens to a recipient from the sender.
    /// @dev Reverts if `to` is the zero address.
    /// @dev Reverts if the sender does not have at least `value` of balance.
    /// @dev Emits a {Transfer} event.
    /// @param to The account to transfer the tokens to.
    /// @param value The amount of tokens to transfer.
    /// @return result Whether the operation succeeded.
    function transfer(address to, uint256 value) external returns (bool result);

    /// @notice Transfers an amount of tokens to a recipient from a specified address.
    /// @dev Reverts if `to` is the zero address.
    /// @dev Reverts if `from` does not have at least `value` of balance.
    /// @dev Reverts if the sender is not `from` and does not have at least `value` of allowance by `from`.
    /// @dev Emits a {Transfer} event.
    /// @dev Optionally emits an {Approval} event if the sender is not `from` (non-standard).
    /// @param from The account which owns the tokens to transfer.
    /// @param to The account to transfer the tokens to.
    /// @param value The amount of tokens to transfer.
    /// @return result Whether the operation succeeded.
    function transferFrom(address from, address to, uint256 value) external returns (bool result);

    /// @notice Gets the total token supply.
    /// @return supply The total token supply.
    function totalSupply() external view returns (uint256 supply);

    /// @notice Gets an account balance.
    /// @param owner The account whose balance will be returned.
    /// @return balance The account balance.
    function balanceOf(address owner) external view returns (uint256 balance);

    /// @notice Gets the amount that an account is allowed to spend on behalf of another.
    /// @param owner The account that has granted an allowance to `spender`.
    /// @param spender The account that was granted an allowance by `owner`.
    /// @return value The amount which `spender` is allowed to spend on behalf of `owner`.
    function allowance(address owner, address spender) external view returns (uint256 value);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title ERC20 Token Standard, optional extension: Allowance.
/// @dev See https://eips.ethereum.org/EIPS/eip-20
/// @dev Note: the ERC-165 identifier for this interface is 0x9d075186.
interface IERC20Allowance {
    /// @notice Increases the allowance granted to an account by the sender.
    /// @notice This is an alternative to {approve} that can be used as a mitigation for transaction ordering problems.
    /// @dev Reverts if `spender` is the zero address.
    /// @dev Reverts if `spender`'s allowance by the sender overflows.
    /// @dev Emits an {IERC20-Approval} event with an updated allowance for `spender` by the sender.
    /// @param spender The account whose allowance is being increased.
    /// @param value The allowance amount increase.
    /// @return result Whether the operation succeeded.
    function increaseAllowance(address spender, uint256 value) external returns (bool result);

    /// @notice Decreases the allowance granted to an account by the sender.
    /// @notice This is an alternative to {approve} that can be used as a mitigation for transaction ordering problems.
    /// @dev Reverts if `spender` is the zero address.
    /// @dev Reverts if `spender` does not have at least `value` of allowance by the sender.
    /// @dev Emits an {IERC20-Approval} event with an updated allowance for `spender` by the sender.
    /// @param spender The account whose allowance is being decreased.
    /// @param value The allowance amount decrease.
    /// @return result Whether the operation succeeded.
    function decreaseAllowance(address spender, uint256 value) external returns (bool result);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title ERC20 Token Standard, optional extension: Batch Transfers.
/// @dev See https://eips.ethereum.org/EIPS/eip-20
/// @dev Note: the ERC-165 identifier for this interface is 0xc05327e6.
interface IERC20BatchTransfers {
    /// @notice Transfers multiple amounts of tokens to multiple recipients from the sender.
    /// @dev Reverts if `recipients` and `values` have different lengths.
    /// @dev Reverts if one of `recipients` is the zero address.
    /// @dev Reverts if the sender does not have at least `sum(values)` of balance.
    /// @dev Emits an {IERC20-Transfer} event for each transfer.
    /// @param recipients The list of accounts to transfer the tokens to.
    /// @param values The list of amounts of tokens to transfer to each of `recipients`.
    /// @return result Whether the operation succeeded.
    function batchTransfer(address[] calldata recipients, uint256[] calldata values) external returns (bool result);

    /// @notice Transfers multiple amounts of tokens to multiple recipients from a specified address.
    /// @dev Reverts if `recipients` and `values` have different lengths.
    /// @dev Reverts if one of `recipients` is the zero address.
    /// @dev Reverts if `from` does not have at least `sum(values)` of balance.
    /// @dev Reverts if the sender is not `from` and does not have at least `sum(values)` of allowance by `from`.
    /// @dev Emits an {IERC20-Transfer} event for each transfer.
    /// @dev Optionally emits an {IERC20-Approval} event if the sender is not `from` (non-standard).
    /// @param from The account which owns the tokens to be transferred.
    /// @param recipients The list of accounts to transfer the tokens to.
    /// @param values The list of amounts of tokens to transfer to each of `recipients`.
    /// @return result Whether the operation succeeded.
    function batchTransferFrom(address from, address[] calldata recipients, uint256[] calldata values) external returns (bool result);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title ERC20 Token Standard, optional extension: Burnable.
/// @dev See https://eips.ethereum.org/EIPS/eip-20
/// @dev Note: the ERC-165 identifier for this interface is 0x3b5a0bf8.
interface IERC20Burnable {
    /// @notice Burns an amount of tokens from the sender, decreasing the total supply.
    /// @dev Reverts if the sender does not have at least `value` of balance.
    /// @dev Emits an {IERC20-Transfer} event with `to` set to the zero address.
    /// @param value The amount of tokens to burn.
    /// @return result Whether the operation succeeded.
    function burn(uint256 value) external returns (bool result);

    /// @notice Burns an amount of tokens from a specified address, decreasing the total supply.
    /// @dev Reverts if `from` does not have at least `value` of balance.
    /// @dev Reverts if the sender is not `from` and does not have at least `value` of allowance by `from`.
    /// @dev Emits an {IERC20-Transfer} event with `to` set to the zero address.
    /// @dev Optionally emits an {Approval} event if the sender is not `from` (non-standard).
    /// @param from The account to burn the tokens from.
    /// @param value The amount of tokens to burn.
    /// @return result Whether the operation succeeded.
    function burnFrom(address from, uint256 value) external returns (bool result);

    /// @notice Burns multiple amounts of tokens from multiple owners, decreasing the total supply.
    /// @dev Reverts if `owners` and `values` have different lengths.
    /// @dev Reverts if an `owner` does not have at least the corresponding `value` of balance.
    /// @dev Reverts if the sender is not an `owner` and does not have at least the corresponding `value` of allowance by this `owner`.
    /// @dev Emits an {IERC20-Transfer} event for each transfer with `to` set to the zero address.
    /// @dev Optionally emits an {Approval} event for each transfer if the sender is not this `owner` (non-standard).
    /// @param owners The list of accounts to burn the tokens from.
    /// @param values The list of amounts of tokens to burn.
    /// @return result Whether the operation succeeded.
    function batchBurnFrom(address[] calldata owners, uint256[] calldata values) external returns (bool result);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title ERC20 Token Standard, optional extension: Detailed.
/// @dev See https://eips.ethereum.org/EIPS/eip-20
/// @dev Note: the ERC-165 identifier for this interface is 0xa219a025.
interface IERC20Detailed {
    /// @notice Gets the name of the token. E.g. "My Token".
    /// @return tokenName The name of the token.
    function name() external view returns (string memory tokenName);

    /// @notice Gets the symbol of the token. E.g. "TOK".
    /// @return tokenSymbol The symbol of the token.
    function symbol() external view returns (string memory tokenSymbol);

    /// @notice Gets the number of decimals used to display the balances.
    /// @notice For example, if `decimals` equals `2`, a balance of `505` tokens should be displayed to a user as `5,05` (`505 / 10 ** 2`).
    /// @notice Tokens usually opt for a value of 18, imitating the relationship between Ether and Wei.
    /// @dev Note: This information is only used for display purposes: it does  not impact the arithmetic of the contract.
    /// @return nbDecimals The number of decimals used to display the balances.
    function decimals() external view returns (uint8 nbDecimals);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title ERC20 Token Standard, ERC1046 optional extension: Metadata.
/// @dev See https://eips.ethereum.org/EIPS/eip-1046
/// @dev Note: the ERC-165 identifier for this interface is 0x3c130d90.
interface IERC20Metadata {
    /// @notice Gets the token metadata URI.
    /// @return uri The token metadata URI.
    function tokenURI() external view returns (string memory uri);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title ERC20 Token Standard, optional extension: Mintable.
/// @dev See https://eips.ethereum.org/EIPS/eip-20
/// @dev Note: the ERC-165 identifier for this interface is 0x28963e1e.
interface IERC20Mintable {
    /// @notice Mints an amount of tokens to a recipient, increasing the total supply.
    /// @dev Reverts if `to` is the zero address.
    /// @dev Reverts if the total supply overflows.
    /// @dev Emits an {IERC20-Transfer} event with `from` set to the zero address.
    /// @param to The account to mint the tokens to.
    /// @param value The amount of tokens to mint.
    function mint(address to, uint256 value) external;

    /// @notice Mints multiple amounts of tokens to multiple recipients, increasing the total supply.
    /// @dev Reverts if `recipients` and `values` have different lengths.
    /// @dev Reverts if one of `recipients` is the zero address.
    /// @dev Reverts if the total supply overflows.
    /// @dev Emits an {IERC20-Transfer} event for each transfer with `from` set to the zero address.
    /// @param recipients The list of accounts to mint the tokens to.
    /// @param values The list of amounts of tokens to mint to each of `recipients`.
    function batchMint(address[] calldata recipients, uint256[] calldata values) external;
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title ERC20 Token Standard, ERC2612 optional extension: permit – 712-signed approvals
/// @notice Interface for allowing ERC20 approvals to be made via ECDSA `secp256k1` signatures.
/// @dev See https://eips.ethereum.org/EIPS/eip-2612
/// @dev Note: the ERC-165 identifier for this interface is 0x9d8ff7da.
interface IERC20Permit {
    /// @notice Sets the allowance to an account from another account using a signed permit.
    /// @notice Warning: The standard ERC20 race condition for approvals applies to `permit()` as well: https://swcregistry.io/docs/SWC-114
    /// @dev Reverts if `owner` is the zero address.
    /// @dev Reverts if the current blocktime is greather than `deadline`.
    /// @dev Reverts if `r`, `s`, and `v` do not represent a valid `secp256k1` signature from `owner`.
    /// @dev Emits an {IERC20-Approval} event.
    /// @param owner The token owner granting the allowance to `spender`.
    /// @param spender The token spender being granted the allowance by `owner`.
    /// @param value The allowance amount to grant.
    /// @param deadline The deadline from which the permit signature is no longer valid.
    /// @param v Permit signature v parameter
    /// @param r Permit signature r parameter.
    /// @param s Permit signature s parameter.
    function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external;

    /// @notice Gets the current permit nonce of an account.
    /// @param owner The account to check the nonce of.
    /// @return nonce The current permit nonce of `owner`.
    function nonces(address owner) external view returns (uint256 nonce);

    /// @notice Returns the EIP-712 encoded hash struct of the domain-specific information for permits.
    /// @dev A common ERC-20 permit implementation choice for the `DOMAIN_SEPARATOR` is:
    ///  keccak256(
    ///      abi.encode(
    ///          keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
    ///          keccak256(bytes(name)),
    ///          keccak256(bytes(version)),
    ///          chainId,
    ///          address(this)))
    ///
    ///  where
    ///   - `name` (string) is the ERC-20 token name.
    ///   - `version` (string) refers to the ERC-20 token contract version.
    ///   - `chainId` (uint256) is the chain ID to which the ERC-20 token contract is deployed to.
    ///   - `verifyingContract` (address) is the ERC-20 token contract address.
    ///
    /// @return domainSeparator The EIP-712 encoded hash struct of the domain-specific information for permits.
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32 domainSeparator);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title ERC20 Token Standard, Tokens Receiver.
/// @notice Interface for supporting safe transfers from ERC20 contracts with the Safe Transfers extension.
/// @dev See https://eips.ethereum.org/EIPS/eip-20
/// @dev Note: the ERC-165 identifier for this interface is 0x4fc35859.
interface IERC20Receiver {
    /// @notice Handles the receipt of ERC20 tokens.
    /// @dev Note: this function is called by an {ERC20SafeTransfer} contract after a safe transfer.
    /// @param operator The initiator of the safe transfer.
    /// @param from The previous tokens owner.
    /// @param value The amount of tokens transferred.
    /// @param data Optional additional data with no specified format.
    /// @return magicValue `bytes4(keccak256("onERC20Received(address,address,uint256,bytes)"))` (`0x4fc35859`) to accept, any other value to refuse.
    function onERC20Received(address operator, address from, uint256 value, bytes calldata data) external returns (bytes4 magicValue);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title ERC20 Token Standard, optional extension: Safe Transfers.
/// @dev See https://eips.ethereum.org/EIPS/eip-20
/// @dev Note: the ERC-165 identifier for this interface is 0x53f41a97.
interface IERC20SafeTransfers {
    /// @notice Transfers an amount of tokens to a recipient from the sender. If the recipient is a contract, calls `onERC20Received` on it.
    /// @dev Reverts if `to` is the zero address.
    /// @dev Reverts if the sender does not have at least `value` of balance.
    /// @dev Reverts if `to` is a contract and the call to `onERC20Received` fails, reverts or is rejected.
    /// @dev Emits an {IERC20-Transfer} event.
    /// @param to The account to transfer the tokens to.
    /// @param value The amount of tokens to transfer.
    /// @param data Optional additional data with no specified format, to be passed to the receiver contract.
    /// @return result Whether the operation succeeded.
    function safeTransfer(address to, uint256 value, bytes calldata data) external returns (bool result);

    /// @notice Transfers an amount of tokens to a recipient from a specified address. If the recipient is a contract, calls `onERC20Received` on it.
    /// @dev Reverts if `to` is the zero address.
    /// @dev Reverts if `from` does not have at least `value` of balance.
    /// @dev Reverts if the sender is not `from` and does not have at least `value` of allowance by `from`.
    /// @dev Reverts if `to` is a contract and the call to `onERC20Received(address,address,uint256,bytes)` fails, reverts or is rejected.
    /// @dev Emits an {IERC20-Transfer} event.
    /// @dev Optionally emits an {IERC20-Approval} event if the sender is not `from` (non-standard).
    /// @param from The account which owns the tokens to transfer.
    /// @param to The account to transfer the tokens to.
    /// @param value The amount of tokens to transfer.
    /// @param data Optional additional data with no specified format, to be passed to the receiver contract.
    /// @return result Whether the operation succeeded.
    function safeTransferFrom(address from, address to, uint256 value, bytes calldata data) external returns (bool result);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC20Detailed} from "./../interfaces/IERC20Detailed.sol";
import {ProxyInitialization} from "./../../../proxy/libraries/ProxyInitialization.sol";
import {InterfaceDetectionStorage} from "./../../../introspection/libraries/InterfaceDetectionStorage.sol";

library ERC20DetailedStorage {
    using InterfaceDetectionStorage for InterfaceDetectionStorage.Layout;
    using ERC20DetailedStorage for ERC20DetailedStorage.Layout;

    struct Layout {
        string tokenName;
        string tokenSymbol;
        uint8 tokenDecimals;
    }

    bytes32 internal constant LAYOUT_STORAGE_SLOT = bytes32(uint256(keccak256("animoca.core.token.ERC20.ERC20Detailed.storage")) - 1);
    bytes32 internal constant PROXY_INIT_PHASE_SLOT = bytes32(uint256(keccak256("animoca.core.token.ERC20.ERC20Detailed.phase")) - 1);

    /// @notice Initializes the storage with the token details (immutable version).
    /// @notice Marks the following ERC165 interface(s) as supported: ERC20Detailed.
    /// @dev Note: This function should be called ONLY in the constructor of an immutable (non-proxied) contract.
    /// @param tokenName The token name.
    /// @param tokenSymbol The token symbol.
    /// @param tokenDecimals The token decimals.
    function constructorInit(Layout storage s, string memory tokenName, string memory tokenSymbol, uint8 tokenDecimals) internal {
        s.tokenName = tokenName;
        s.tokenSymbol = tokenSymbol;
        s.tokenDecimals = tokenDecimals;
        InterfaceDetectionStorage.layout().setSupportedInterface(type(IERC20Detailed).interfaceId, true);
    }

    /// @notice Initializes the storage with the token details (proxied version).
    /// @notice Sets the proxy initialization phase to `1`.
    /// @notice Marks the following ERC165 interface(s) as supported: ERC20Detailed.
    /// @dev Note: This function should be called ONLY in the init function of a proxied contract.
    /// @dev Reverts if the proxy initialization phase is set to `1` or above.
    /// @param tokenName The token name.
    /// @param tokenSymbol The token symbol.
    /// @param tokenDecimals The token decimals.
    function proxyInit(Layout storage s, string calldata tokenName, string calldata tokenSymbol, uint8 tokenDecimals) internal {
        ProxyInitialization.setPhase(PROXY_INIT_PHASE_SLOT, 1);
        s.tokenName = tokenName;
        s.tokenSymbol = tokenSymbol;
        s.tokenDecimals = tokenDecimals;
        InterfaceDetectionStorage.layout().setSupportedInterface(type(IERC20Detailed).interfaceId, true);
    }

    /// @notice Gets the name of the token. E.g. "My Token".
    /// @return tokenName The name of the token.
    function name(Layout storage s) internal view returns (string memory tokenName) {
        return s.tokenName;
    }

    /// @notice Gets the symbol of the token. E.g. "TOK".
    /// @return tokenSymbol The symbol of the token.
    function symbol(Layout storage s) internal view returns (string memory tokenSymbol) {
        return s.tokenSymbol;
    }

    /// @notice Gets the number of decimals used to display the balances.
    /// @notice For example, if `decimals` equals `2`, a balance of `505` tokens should be displayed to a user as `5,05` (`505 / 10 ** 2`).
    /// @notice Tokens usually opt for a value of 18, imitating the relationship between Ether and Wei.
    /// @dev Note: This information is only used for display purposes: it does  not impact the arithmetic of the contract.
    /// @return nbDecimals The number of decimals used to display the balances.
    function decimals(Layout storage s) internal view returns (uint8 nbDecimals) {
        return s.tokenDecimals;
    }

    function layout() internal pure returns (Layout storage s) {
        bytes32 position = LAYOUT_STORAGE_SLOT;
        assembly {
            s.slot := position
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC20Metadata} from "./../interfaces/IERC20Metadata.sol";
import {ProxyInitialization} from "./../../../proxy/libraries/ProxyInitialization.sol";
import {InterfaceDetectionStorage} from "./../../../introspection/libraries/InterfaceDetectionStorage.sol";

library ERC20MetadataStorage {
    using InterfaceDetectionStorage for InterfaceDetectionStorage.Layout;
    using ERC20MetadataStorage for ERC20MetadataStorage.Layout;

    struct Layout {
        string uri;
    }

    bytes32 internal constant LAYOUT_STORAGE_SLOT = bytes32(uint256(keccak256("animoca.core.token.ERC20.ERC20Metadata.storage")) - 1);

    /// @notice Marks the following ERC165 interface(s) as supported: ERC20Metadata.
    function init() internal {
        InterfaceDetectionStorage.layout().setSupportedInterface(type(IERC20Metadata).interfaceId, true);
    }

    /// @notice Sets the token URI.
    /// @param uri The token URI.
    function setTokenURI(Layout storage s, string calldata uri) internal {
        s.uri = uri;
    }

    /// @notice Gets the token metadata URI.
    /// @return uri The token metadata URI.
    function tokenURI(Layout storage s) internal view returns (string memory uri) {
        return s.uri;
    }

    function layout() internal pure returns (Layout storage s) {
        bytes32 position = LAYOUT_STORAGE_SLOT;
        assembly {
            s.slot := position
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC20Permit} from "./../interfaces/IERC20Permit.sol";
import {StorageSlot} from "@openzeppelin/contracts/utils/StorageSlot.sol";
import {ERC20Storage} from "./ERC20Storage.sol";
import {ERC20DetailedStorage} from "./ERC20DetailedStorage.sol";
import {InterfaceDetectionStorage} from "./../../../introspection/libraries/InterfaceDetectionStorage.sol";

library ERC20PermitStorage {
    using ERC20Storage for ERC20Storage.Layout;
    using ERC20DetailedStorage for ERC20DetailedStorage.Layout;
    using InterfaceDetectionStorage for InterfaceDetectionStorage.Layout;

    struct Layout {
        mapping(address => uint256) accountNonces;
    }

    bytes32 internal constant LAYOUT_STORAGE_SLOT = bytes32(uint256(keccak256("animoca.core.token.ERC20.ERC20Permit.storage")) - 1);

    // 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9
    bytes32 internal constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");

    /// @notice Marks the following ERC165 interface(s) as supported: ERC20Permit.
    function init() internal {
        InterfaceDetectionStorage.layout().setSupportedInterface(type(IERC20Permit).interfaceId, true);
    }

    /// @notice Sets the allowance to an account from another account using a signed permit.
    /// @dev Reverts if `owner` is the zero address.
    /// @dev Reverts if the current blocktime is greather than `deadline`.
    /// @dev Reverts if `r`, `s`, and `v` do not represent a valid `secp256k1` signature from `owner`.
    /// @dev Emits an {IERC20-Approval} event.
    /// @param owner The token owner granting the allowance to `spender`.
    /// @param spender The token spender being granted the allowance by `owner`.
    /// @param value The allowance amount to grant.
    /// @param deadline The deadline from which the permit signature is no longer valid.
    /// @param v Permit signature v parameter
    /// @param r Permit signature r parameter.
    /// @param s Permit signature s parameter.
    function permit(Layout storage st, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) internal {
        require(owner != address(0), "ERC20: permit from address(0)");
        require(block.timestamp <= deadline, "ERC20: expired permit");
        unchecked {
            bytes32 hashStruct = keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, st.accountNonces[owner]++, deadline));
            bytes32 hash = keccak256(abi.encodePacked("\x19\x01", DOMAIN_SEPARATOR(), hashStruct));
            address signer = ecrecover(hash, v, r, s);
            require(signer == owner, "ERC20: invalid permit");
        }
        ERC20Storage.layout().approve(owner, spender, value);
    }

    /// @notice Gets the current permit nonce of an account.
    /// @param owner The account to check the nonce of.
    /// @return nonce The current permit nonce of `owner`.
    function nonces(Layout storage s, address owner) internal view returns (uint256 nonce) {
        return s.accountNonces[owner];
    }

    /// @notice Returns the EIP-712 encoded hash struct of the domain-specific information for permits.
    /// @dev A common ERC-20 permit implementation choice for the `DOMAIN_SEPARATOR` is:
    ///  keccak256(
    ///      abi.encode(
    ///          keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
    ///          keccak256(bytes(name)),
    ///          keccak256(bytes(version)),
    ///          chainId,
    ///          address(this)))
    ///
    ///  where
    ///   - `name` (string) is the ERC-20 token name.
    ///   - `version` (string) refers to the ERC-20 token contract version.
    ///   - `chainId` (uint256) is the chain ID to which the ERC-20 token contract is deployed to.
    ///   - `verifyingContract` (address) is the ERC-20 token contract address.
    ///
    /// @return domainSeparator The EIP-712 encoded hash struct of the domain-specific information for permits.
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() internal view returns (bytes32) {
        uint256 chainId;
        assembly {
            chainId := chainid()
        }
        return
            keccak256(
                abi.encode(
                    keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
                    keccak256(bytes(ERC20DetailedStorage.layout().name())),
                    keccak256("1"),
                    chainId,
                    address(this)
                )
            );
    }

    function layout() internal pure returns (Layout storage s) {
        bytes32 position = LAYOUT_STORAGE_SLOT;
        assembly {
            s.slot := position
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

import {IERC20} from "./../interfaces/IERC20.sol";
import {IERC20Allowance} from "./../interfaces/IERC20Allowance.sol";
import {IERC20BatchTransfers} from "./../interfaces/IERC20BatchTransfers.sol";
import {IERC20SafeTransfers} from "./../interfaces/IERC20SafeTransfers.sol";
import {IERC20Mintable} from "./../interfaces/IERC20Mintable.sol";
import {IERC20Burnable} from "./../interfaces/IERC20Burnable.sol";
import {IERC20Receiver} from "./../interfaces/IERC20Receiver.sol";
import {Address} from "@openzeppelin/contracts/utils/Address.sol";
import {ProxyInitialization} from "./../../../proxy/libraries/ProxyInitialization.sol";
import {InterfaceDetectionStorage} from "./../../../introspection/libraries/InterfaceDetectionStorage.sol";

library ERC20Storage {
    using Address for address;
    using ERC20Storage for ERC20Storage.Layout;
    using InterfaceDetectionStorage for InterfaceDetectionStorage.Layout;

    struct Layout {
        mapping(address => uint256) balances;
        mapping(address => mapping(address => uint256)) allowances;
        uint256 supply;
    }

    bytes32 internal constant LAYOUT_STORAGE_SLOT = bytes32(uint256(keccak256("animoca.core.token.ERC20.ERC20.storage")) - 1);

    bytes4 internal constant ERC20_RECEIVED = IERC20Receiver.onERC20Received.selector;

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /// @notice Marks the following ERC165 interface(s) as supported: ERC20, ERC20Allowance.
    function init() internal {
        InterfaceDetectionStorage.Layout storage erc165Layout = InterfaceDetectionStorage.layout();
        erc165Layout.setSupportedInterface(type(IERC20).interfaceId, true);
        erc165Layout.setSupportedInterface(type(IERC20Allowance).interfaceId, true);
    }

    /// @notice Marks the following ERC165 interface(s) as supported: ERC20BatchTransfers.
    function initERC20BatchTransfers() internal {
        InterfaceDetectionStorage.layout().setSupportedInterface(type(IERC20BatchTransfers).interfaceId, true);
    }

    /// @notice Marks the following ERC165 interface(s) as supported: ERC20SafeTransfers.
    function initERC20SafeTransfers() internal {
        InterfaceDetectionStorage.layout().setSupportedInterface(type(IERC20SafeTransfers).interfaceId, true);
    }

    /// @notice Marks the following ERC165 interface(s) as supported: ERC20Mintable.
    function initERC20Mintable() internal {
        InterfaceDetectionStorage.layout().setSupportedInterface(type(IERC20Mintable).interfaceId, true);
    }

    /// @notice Marks the following ERC165 interface(s) as supported: ERC20Burnable.
    function initERC20Burnable() internal {
        InterfaceDetectionStorage.layout().setSupportedInterface(type(IERC20Burnable).interfaceId, true);
    }

    /// @notice Sets the allowance to an account by an owner.
    /// @dev Note: This function implements {ERC20-approve(address,uint256)}.
    /// @dev Reverts if `spender` is the zero address.
    /// @dev Emits an {Approval} event.
    /// @param owner The account to set the allowance from.
    /// @param spender The account being granted the allowance by `owner`.
    /// @param value The allowance amount to grant.
    function approve(Layout storage s, address owner, address spender, uint256 value) internal {
        require(spender != address(0), "ERC20: approval to address(0)");
        s.allowances[owner][spender] = value;
        emit Approval(owner, spender, value);
    }

    /// @notice Increases the allowance granted to an account by an owner.
    /// @dev Note: This function implements {ERC20Allowance-increaseAllowance(address,uint256)}.
    /// @dev Reverts if `spender` is the zero address.
    /// @dev Reverts if `spender`'s allowance by `owner` overflows.
    /// @dev Emits an {IERC20-Approval} event with an updated allowance for `spender` by `owner`.
    /// @param owner The account increasing the allowance.
    /// @param spender The account whose allowance is being increased.
    /// @param value The allowance amount increase.
    function increaseAllowance(Layout storage s, address owner, address spender, uint256 value) internal {
        require(spender != address(0), "ERC20: approval to address(0)");
        uint256 allowance_ = s.allowances[owner][spender];
        if (value != 0) {
            unchecked {
                uint256 newAllowance = allowance_ + value;
                require(newAllowance > allowance_, "ERC20: allowance overflow");
                s.allowances[owner][spender] = newAllowance;
                allowance_ = newAllowance;
            }
        }
        emit Approval(owner, spender, allowance_);
    }

    /// @notice Decreases the allowance granted to an account by an owner.
    /// @dev Note: This function implements {ERC20Allowance-decreaseAllowance(address,uint256)}.
    /// @dev Reverts if `spender` is the zero address.
    /// @dev Reverts if `spender` does not have at least `value` of allowance by `owner`.
    /// @dev Emits an {IERC20-Approval} event with an updated allowance for `spender` by `owner`.
    /// @param owner The account decreasing the allowance.
    /// @param spender The account whose allowance is being decreased.
    /// @param value The allowance amount decrease.
    function decreaseAllowance(Layout storage s, address owner, address spender, uint256 value) internal {
        require(spender != address(0), "ERC20: approval to address(0)");
        uint256 allowance_ = s.allowances[owner][spender];

        if (allowance_ != type(uint256).max && value != 0) {
            unchecked {
                // save gas when allowance is maximal by not reducing it (see https://github.com/ethereum/EIPs/issues/717)
                uint256 newAllowance = allowance_ - value;
                require(newAllowance < allowance_, "ERC20: insufficient allowance");
                s.allowances[owner][spender] = newAllowance;
                allowance_ = newAllowance;
            }
        }
        emit Approval(owner, spender, allowance_);
    }

    /// @notice Transfers an amount of tokens from an account to a recipient.
    /// @dev Note: This function implements {ERC20-transfer(address,uint256)}.
    /// @dev Reverts if `to` is the zero address.
    /// @dev Reverts if `from` does not have at least `value` of balance.
    /// @dev Emits a {Transfer} event.
    /// @param from The account transferring the tokens.
    /// @param to The account to transfer the tokens to.
    /// @param value The amount of tokens to transfer.
    function transfer(Layout storage s, address from, address to, uint256 value) internal {
        require(to != address(0), "ERC20: transfer to address(0)");

        if (value != 0) {
            uint256 balance = s.balances[from];
            unchecked {
                uint256 newBalance = balance - value;
                require(newBalance < balance, "ERC20: insufficient balance");
                if (from != to) {
                    s.balances[from] = newBalance;
                    s.balances[to] += value;
                }
            }
        }

        emit Transfer(from, to, value);
    }

    /// @notice Transfers an amount of tokens from an account to a recipient by a sender.
    /// @dev Note: This function implements {ERC20-transferFrom(address,address,uint256)}.
    /// @dev Reverts if `to` is the zero address.
    /// @dev Reverts if `from` does not have at least `value` of balance.
    /// @dev Reverts if `sender` is not `from` and does not have at least `value` of allowance by `from`.
    /// @dev Emits a {Transfer} event.
    /// @dev Optionally emits an {Approval} event if `sender` is not `from`.
    /// @param sender The message sender.
    /// @param from The account which owns the tokens to transfer.
    /// @param to The account to transfer the tokens to.
    /// @param value The amount of tokens to transfer.
    function transferFrom(Layout storage s, address sender, address from, address to, uint256 value) internal {
        if (from != sender) {
            s.decreaseAllowance(from, sender, value);
        }
        s.transfer(from, to, value);
    }

    //================================================= Batch Transfers ==================================================//

    /// @notice Transfers multiple amounts of tokens from an account to multiple recipients.
    /// @dev Note: This function implements {ERC20BatchTransfers-batchTransfer(address[],uint256[])}.
    /// @dev Reverts if `recipients` and `values` have different lengths.
    /// @dev Reverts if one of `recipients` is the zero address.
    /// @dev Reverts if `from` does not have at least `sum(values)` of balance.
    /// @dev Emits a {Transfer} event for each transfer.
    /// @param from The account transferring the tokens.
    /// @param recipients The list of accounts to transfer the tokens to.
    /// @param values The list of amounts of tokens to transfer to each of `recipients`.
    function batchTransfer(Layout storage s, address from, address[] calldata recipients, uint256[] calldata values) internal {
        uint256 length = recipients.length;
        require(length == values.length, "ERC20: inconsistent arrays");

        if (length == 0) return;

        uint256 balance = s.balances[from];

        uint256 totalValue;
        uint256 selfTransferTotalValue;
        unchecked {
            for (uint256 i; i != length; ++i) {
                address to = recipients[i];
                require(to != address(0), "ERC20: transfer to address(0)");

                uint256 value = values[i];
                if (value != 0) {
                    uint256 newTotalValue = totalValue + value;
                    require(newTotalValue > totalValue, "ERC20: values overflow");
                    totalValue = newTotalValue;
                    if (from != to) {
                        s.balances[to] += value;
                    } else {
                        require(value <= balance, "ERC20: insufficient balance");
                        selfTransferTotalValue += value; // cannot overflow as 'selfTransferTotalValue <= totalValue' is always true
                    }
                }
                emit Transfer(from, to, value);
            }

            if (totalValue != 0 && totalValue != selfTransferTotalValue) {
                uint256 newBalance = balance - totalValue;
                require(newBalance < balance, "ERC20: insufficient balance"); // balance must be sufficient, including self-transfers
                s.balances[from] = newBalance + selfTransferTotalValue; // do not deduct self-transfers from the sender balance
            }
        }
    }

    /// @notice Transfers multiple amounts of tokens from an account to multiple recipients by a sender.
    /// @dev Note: This function implements {ERC20BatchTransfers-batchTransferFrom(address,address[],uint256[])}.
    /// @dev Reverts if `recipients` and `values` have different lengths.
    /// @dev Reverts if one of `recipients` is the zero address.
    /// @dev Reverts if `from` does not have at least `sum(values)` of balance.
    /// @dev Reverts if `sender` is not `from` and does not have at least `sum(values)` of allowance by `from`.
    /// @dev Emits a {Transfer} event for each transfer.
    /// @dev Optionally emits an {Approval} event if `sender` is not `from` (non-standard).
    /// @param sender The message sender.
    /// @param from The account transferring the tokens.
    /// @param recipients The list of accounts to transfer the tokens to.
    /// @param values The list of amounts of tokens to transfer to each of `recipients`.
    function batchTransferFrom(Layout storage s, address sender, address from, address[] calldata recipients, uint256[] calldata values) internal {
        uint256 length = recipients.length;
        require(length == values.length, "ERC20: inconsistent arrays");

        if (length == 0) return;

        uint256 balance = s.balances[from];

        uint256 totalValue;
        uint256 selfTransferTotalValue;
        unchecked {
            for (uint256 i; i != length; ++i) {
                address to = recipients[i];
                require(to != address(0), "ERC20: transfer to address(0)");

                uint256 value = values[i];

                if (value != 0) {
                    uint256 newTotalValue = totalValue + value;
                    require(newTotalValue > totalValue, "ERC20: values overflow");
                    totalValue = newTotalValue;
                    if (from != to) {
                        s.balances[to] += value;
                    } else {
                        require(value <= balance, "ERC20: insufficient balance");
                        selfTransferTotalValue += value; // cannot overflow as 'selfTransferTotalValue <= totalValue' is always true
                    }
                }

                emit Transfer(from, to, value);
            }

            if (totalValue != 0 && totalValue != selfTransferTotalValue) {
                uint256 newBalance = balance - totalValue;
                require(newBalance < balance, "ERC20: insufficient balance"); // balance must be sufficient, including self-transfers
                s.balances[from] = newBalance + selfTransferTotalValue; // do not deduct self-transfers from the sender balance
            }
        }

        if (from != sender) {
            s.decreaseAllowance(from, sender, totalValue);
        }
    }

    //================================================= Safe Transfers ==================================================//

    /// @notice Transfers an amount of tokens from an account to a recipient. If the recipient is a contract, calls `onERC20Received` on it.
    /// @dev Note: This function implements {ERC20SafeTransfers-safeTransfer(address,uint256,bytes)}.
    /// @dev Warning: Since a `to` contract can run arbitrary code, developers should be aware of potential re-entrancy attacks.
    /// @dev Reverts if `to` is the zero address.
    /// @dev Reverts if `from` does not have at least `value` of balance.
    /// @dev Reverts if `to` is a contract and the call to `onERC20Received` fails, reverts or is rejected.
    /// @dev Emits a {Transfer} event.
    /// @param from The account transferring the tokens.
    /// @param to The account to transfer the tokens to.
    /// @param value The amount of tokens to transfer.
    /// @param data Optional additional data with no specified format, to be passed to the receiver contract.
    function safeTransfer(Layout storage s, address from, address to, uint256 value, bytes calldata data) internal {
        s.transfer(from, to, value);
        if (to.isContract()) {
            _callOnERC20Received(from, from, to, value, data);
        }
    }

    /// @notice Transfers an amount of tokens to a recipient from a specified address. If the recipient is a contract, calls `onERC20Received` on it.
    /// @dev Note: This function implements {ERC20SafeTransfers-safeTransferFrom(address,address,uint256,bytes)}.
    /// @dev Warning: Since a `to` contract can run arbitrary code, developers should be aware of potential re-entrancy attacks.
    /// @dev Reverts if `to` is the zero address.
    /// @dev Reverts if `from` does not have at least `value` of balance.
    /// @dev Reverts if `sender` is not `from` and does not have at least `value` of allowance by `from`.
    /// @dev Reverts if `to` is a contract and the call to `onERC20Received(address,address,uint256,bytes)` fails, reverts or is rejected.
    /// @dev Emits a {Transfer} event.
    /// @dev Optionally emits an {Approval} event if `sender` is not `from` (non-standard).
    /// @param sender The message sender.
    /// @param from The account transferring the tokens.
    /// @param to The account to transfer the tokens to.
    /// @param value The amount of tokens to transfer.
    /// @param data Optional additional data with no specified format, to be passed to the receiver contract.
    function safeTransferFrom(Layout storage s, address sender, address from, address to, uint256 value, bytes calldata data) internal {
        s.transferFrom(sender, from, to, value);
        if (to.isContract()) {
            _callOnERC20Received(sender, from, to, value, data);
        }
    }

    //================================================= Minting ==================================================//

    /// @notice Mints an amount of tokens to a recipient, increasing the total supply.
    /// @dev Note: This function implements {ERC20Mintable-mint(address,uint256)}.
    /// @dev Reverts if `to` is the zero address.
    /// @dev Reverts if the total supply overflows.
    /// @dev Emits a {Transfer} event with `from` set to the zero address.
    /// @param to The account to mint the tokens to.
    /// @param value The amount of tokens to mint.
    function mint(Layout storage s, address to, uint256 value) internal {
        require(to != address(0), "ERC20: mint to address(0)");
        if (value != 0) {
            uint256 supply = s.supply;
            unchecked {
                uint256 newSupply = supply + value;
                require(newSupply > supply, "ERC20: supply overflow");
                s.supply = newSupply;
                s.balances[to] += value; // balance cannot overflow if supply does not
            }
        }
        emit Transfer(address(0), to, value);
    }

    /// @notice Mints multiple amounts of tokens to multiple recipients, increasing the total supply.
    /// @dev Note: This function implements {ERC20Mintable-batchMint(address[],uint256[])}.
    /// @dev Reverts if `recipients` and `values` have different lengths.
    /// @dev Reverts if one of `recipients` is the zero address.
    /// @dev Reverts if the total supply overflows.
    /// @dev Emits a {Transfer} event for each transfer with `from` set to the zero address.
    /// @param recipients The list of accounts to mint the tokens to.
    /// @param values The list of amounts of tokens to mint to each of `recipients`.
    function batchMint(Layout storage s, address[] memory recipients, uint256[] memory values) internal {
        uint256 length = recipients.length;
        require(length == values.length, "ERC20: inconsistent arrays");

        if (length == 0) return;

        uint256 totalValue;
        unchecked {
            for (uint256 i; i != length; ++i) {
                address to = recipients[i];
                require(to != address(0), "ERC20: mint to address(0)");

                uint256 value = values[i];
                if (value != 0) {
                    uint256 newTotalValue = totalValue + value;
                    require(newTotalValue > totalValue, "ERC20: values overflow");
                    totalValue = newTotalValue;
                    s.balances[to] += value; // balance cannot overflow if supply does not
                }
                emit Transfer(address(0), to, value);
            }

            if (totalValue != 0) {
                uint256 supply = s.supply;
                uint256 newSupply = supply + totalValue;
                require(newSupply > supply, "ERC20: supply overflow");
                s.supply = newSupply;
            }
        }
    }

    //================================================= Burning ==================================================//

    /// @notice Burns an amount of tokens from an account, decreasing the total supply.
    /// @dev Note: This function implements {ERC20Burnable-burn(uint256)}.
    /// @dev Reverts if `from` does not have at least `value` of balance.
    /// @dev Emits a {Transfer} event with `to` set to the zero address.
    /// @param from The account burning the tokens.
    /// @param value The amount of tokens to burn.
    function burn(Layout storage s, address from, uint256 value) internal {
        if (value != 0) {
            uint256 balance = s.balances[from];
            unchecked {
                uint256 newBalance = balance - value;
                require(newBalance < balance, "ERC20: insufficient balance");
                s.balances[from] = newBalance;
                s.supply -= value; // will not underflow if balance does not
            }
        }

        emit Transfer(from, address(0), value);
    }

    /// @notice Burns an amount of tokens from an account by a sender, decreasing the total supply.
    /// @dev Note: This function implements {ERC20Burnable-burnFrom(address,uint256)}.
    /// @dev Reverts if `from` does not have at least `value` of balance.
    /// @dev Reverts if `sender` is not `from` and does not have at least `value` of allowance by `from`.
    /// @dev Emits a {Transfer} event with `to` set to the zero address.
    /// @dev Optionally emits an {Approval} event if `sender` is not `from` (non-standard).
    /// @param sender The message sender.
    /// @param from The account to burn the tokens from.
    /// @param value The amount of tokens to burn.
    function burnFrom(Layout storage s, address sender, address from, uint256 value) internal {
        if (from != sender) {
            s.decreaseAllowance(from, sender, value);
        }
        s.burn(from, value);
    }

    /// @notice Burns multiple amounts of tokens from multiple owners, decreasing the total supply.
    /// @dev Note: This function implements {ERC20Burnable-batchBurnFrom(address,address[],uint256[])}.
    /// @dev Reverts if `owners` and `values` have different lengths.
    /// @dev Reverts if an `owner` does not have at least the corresponding `value` of balance.
    /// @dev Reverts if `sender` is not an `owner` and does not have at least the corresponding `value` of allowance by this `owner`.
    /// @dev Emits a {Transfer} event for each transfer with `to` set to the zero address.
    /// @dev Optionally emits an {Approval} event for each transfer if `sender` is not this `owner` (non-standard).
    /// @param sender The message sender.
    /// @param owners The list of accounts to burn the tokens from.
    /// @param values The list of amounts of tokens to burn.
    function batchBurnFrom(Layout storage s, address sender, address[] calldata owners, uint256[] calldata values) internal {
        uint256 length = owners.length;
        require(length == values.length, "ERC20: inconsistent arrays");

        if (length == 0) return;

        uint256 totalValue;
        unchecked {
            for (uint256 i; i != length; ++i) {
                address from = owners[i];
                uint256 value = values[i];

                if (from != sender) {
                    s.decreaseAllowance(from, sender, value);
                }

                if (value != 0) {
                    uint256 balance = s.balances[from];
                    uint256 newBalance = balance - value;
                    require(newBalance < balance, "ERC20: insufficient balance");
                    s.balances[from] = newBalance;
                    totalValue += value; // totalValue cannot overflow if the individual balances do not underflow
                }

                emit Transfer(from, address(0), value);
            }

            if (totalValue != 0) {
                s.supply -= totalValue; // _totalSupply cannot underfow as balances do not underflow
            }
        }
    }

    /// @notice Gets the total token supply.
    /// @dev Note: This function implements {ERC20-totalSupply()}.
    /// @return supply The total token supply.
    function totalSupply(Layout storage s) internal view returns (uint256 supply) {
        return s.supply;
    }

    /// @notice Gets an account balance.
    /// @dev Note: This function implements {ERC20-balanceOf(address)}.
    /// @param owner The account whose balance will be returned.
    /// @return balance The account balance.
    function balanceOf(Layout storage s, address owner) internal view returns (uint256 balance) {
        return s.balances[owner];
    }

    /// @notice Gets the amount that an account is allowed to spend on behalf of another.
    /// @dev Note: This function implements {ERC20-allowance(address,address)}.
    /// @param owner The account that has granted an allowance to `spender`.
    /// @param spender The account that was granted an allowance by `owner`.
    /// @return value The amount which `spender` is allowed to spend on behalf of `owner`.
    function allowance(Layout storage s, address owner, address spender) internal view returns (uint256 value) {
        return s.allowances[owner][spender];
    }

    function layout() internal pure returns (Layout storage s) {
        bytes32 position = LAYOUT_STORAGE_SLOT;
        assembly {
            s.slot := position
        }
    }

    /// @notice Calls {IERC20Receiver-onERC20Received} on a target contract.
    /// @dev Reverts if the call to the target fails, reverts or is rejected.
    /// @param sender The message sender.
    /// @param from Previous token owner.
    /// @param to New token owner.
    /// @param value The value transferred.
    /// @param data Optional data to send along with the receiver contract call.
    function _callOnERC20Received(address sender, address from, address to, uint256 value, bytes memory data) private {
        require(IERC20Receiver(to).onERC20Received(sender, from, value, data) == ERC20_RECEIVED, "ERC20: safe transfer rejected");
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.8;

/// @title ERC721 Non-Fungible Token Standard, basic interface (functions).
/// @dev See https://eips.ethereum.org/EIPS/eip-721
/// @dev This interface only contains the standard functions. See IERC721Events for the events.
/// @dev Note: The ERC-165 identifier for this interface is 0x80ac58cd.
interface IERC721 {
    /// @notice Sets or unsets an approval to transfer a single token on behalf of its owner.
    /// @dev Note: There can only be one approved address per token at a given time.
    /// @dev Note: A token approval gets reset when this token is transferred, including a self-transfer.
    /// @dev Reverts if `tokenId` does not exist.
    /// @dev Reverts if `to` is the token owner.
    /// @dev Reverts if the sender is not the token owner and has not been approved by the token owner.
    /// @dev Emits an {Approval} event.
    /// @param to The address to approve, or the zero address to remove any existing approval.
    /// @param tokenId The token identifier to give approval for.
    function approve(address to, uint256 tokenId) external;

    /// @notice Sets or unsets an approval to transfer all tokens on behalf of their owner.
    /// @dev Reverts if the sender is the same as `operator`.
    /// @dev Emits an {ApprovalForAll} event.
    /// @param operator The address to approve for all tokens.
    /// @param approved True to set an approval for all tokens, false to unset it.
    function setApprovalForAll(address operator, bool approved) external;

    /// @notice Unsafely transfers the ownership of a token to a recipient.
    /// @dev Note: Usage of this method is discouraged, use `safeTransferFrom` whenever possible.
    /// @dev Resets the token approval for `tokenId`.
    /// @dev Reverts if `to` is the zero address.
    /// @dev Reverts if `from` is not the owner of `tokenId`.
    /// @dev Reverts if the sender is not `from` and has not been approved by `from` for `tokenId`.
    /// @dev Emits a {Transfer} event.
    /// @param from The current token owner.
    /// @param to The recipient of the token transfer. Self-transfers are possible.
    /// @param tokenId The identifier of the token to transfer.
    function transferFrom(address from, address to, uint256 tokenId) external;

    /// @notice Safely transfers the ownership of a token to a recipient.
    /// @dev Resets the token approval for `tokenId`.
    /// @dev Reverts if `to` is the zero address.
    /// @dev Reverts if `from` is not the owner of `tokenId`.
    /// @dev Reverts if the sender is not `from` and has not been approved by `from` for `tokenId`.
    /// @dev Reverts if `to` is a contract and the call to {IERC721Receiver-onERC721Received} fails, reverts or is rejected.
    /// @dev Emits a {Transfer} event.
    /// @param from The current token owner.
    /// @param to The recipient of the token transfer.
    /// @param tokenId The identifier of the token to transfer.
    function safeTransferFrom(address from, address to, uint256 tokenId) external;

    /// @notice Safely transfers the ownership of a token to a recipient.
    /// @dev Resets the token approval for `tokenId`.
    /// @dev Reverts if `to` is the zero address.
    /// @dev Reverts if `from` is not the owner of `tokenId`.
    /// @dev Reverts if the sender is not `from` and has not been approved by `from` for `tokenId`.
    /// @dev Reverts if `to` is a contract and the call to {IERC721Receiver-onERC721Received} fails, reverts or is rejected.
    /// @dev Emits a {Transfer} event.
    /// @param from The current token owner.
    /// @param to The recipient of the token transfer.
    /// @param tokenId The identifier of the token to transfer.
    /// @param data Optional data to send along to a receiver contract.
    function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;

    /// @notice Gets the balance of an address.
    /// @dev Reverts if `owner` is the zero address.
    /// @param owner The address to query the balance of.
    /// @return balance The amount owned by the owner.
    function balanceOf(address owner) external view returns (uint256 balance);

    /// @notice Gets the owner of a token.
    /// @dev Reverts if `tokenId` does not exist.
    /// @param tokenId The token identifier to query the owner of.
    /// @return tokenOwner The owner of the token identifier.
    function ownerOf(uint256 tokenId) external view returns (address tokenOwner);

    /// @notice Gets the approved address for a token.
    /// @dev Reverts if `tokenId` does not exist.
    /// @param tokenId The token identifier to query the approval of.
    /// @return approved The approved address for the token identifier, or the zero address if no approval is set.
    function getApproved(uint256 tokenId) external view returns (address approved);

    /// @notice Gets whether an operator is approved for all tokens by an owner.
    /// @param owner The address which gives the approval for all tokens.
    /// @param operator The address which receives the approval for all tokens.
    /// @return approvedForAll Whether the operator is approved for all tokens by the owner.
    function isApprovedForAll(address owner, address operator) external view returns (bool approvedForAll);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)

pragma solidity ^0.8.0;

import "../token/ERC20/IERC20.sol";

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/draft-IERC20Permit.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (utils/StorageSlot.sol)

pragma solidity ^0.8.0;

/**
 * @dev Library for reading and writing primitive types to specific storage slots.
 *
 * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
 * This library helps with reading and writing to such slots without the need for inline assembly.
 *
 * The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
 *
 * Example usage to set ERC1967 implementation slot:
 * ```
 * contract ERC1967 {
 *     bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
 *
 *     function _getImplementation() internal view returns (address) {
 *         return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
 *     }
 *
 *     function _setImplementation(address newImplementation) internal {
 *         require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
 *         StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
 *     }
 * }
 * ```
 *
 * _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
 */
library StorageSlot {
    struct AddressSlot {
        address value;
    }

    struct BooleanSlot {
        bool value;
    }

    struct Bytes32Slot {
        bytes32 value;
    }

    struct Uint256Slot {
        uint256 value;
    }

    /**
     * @dev Returns an `AddressSlot` with member `value` located at `slot`.
     */
    function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `BooleanSlot` with member `value` located at `slot`.
     */
    function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
     */
    function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }

    /**
     * @dev Returns an `Uint256Slot` with member `value` located at `slot`.
     */
    function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
        /// @solidity memory-safe-assembly
        assembly {
            r.slot := slot
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.17;

import {IForwarderRegistry} from "@animoca/ethereum-contracts/contracts/metatx/interfaces/IForwarderRegistry.sol";
import {ERC20} from "@animoca/ethereum-contracts/contracts/token/ERC20/ERC20.sol";
import {ERC20Storage} from "@animoca/ethereum-contracts/contracts/token/ERC20/libraries/ERC20Storage.sol";
import {ERC20Detailed} from "@animoca/ethereum-contracts/contracts/token/ERC20/ERC20Detailed.sol";
import {ERC20Metadata} from "@animoca/ethereum-contracts/contracts/token/ERC20/ERC20Metadata.sol";
import {ERC20Permit} from "@animoca/ethereum-contracts/contracts/token/ERC20/ERC20Permit.sol";
import {ERC20SafeTransfers} from "@animoca/ethereum-contracts/contracts/token/ERC20/ERC20SafeTransfers.sol";
import {ERC20BatchTransfers} from "@animoca/ethereum-contracts/contracts/token/ERC20/ERC20BatchTransfers.sol";
import {TokenRecovery} from "@animoca/ethereum-contracts/contracts/security/TokenRecovery.sol";
import {ContractOwnership} from "@animoca/ethereum-contracts/contracts/access/ContractOwnership.sol";
import {Context} from "@openzeppelin/contracts/utils/Context.sol";
import {ForwarderRegistryContextBase} from "@animoca/ethereum-contracts/contracts/metatx/base/ForwarderRegistryContextBase.sol";
import {ForwarderRegistryContext} from "@animoca/ethereum-contracts/contracts/metatx/ForwarderRegistryContext.sol";

contract BenjiToken is
    ERC20,
    ERC20Detailed,
    ERC20Metadata,
    ERC20SafeTransfers,
    ERC20BatchTransfers,
    ERC20Permit,
    ForwarderRegistryContext,
    TokenRecovery
{
    using ERC20Storage for ERC20Storage.Layout;

    constructor(
        string memory tokenName,
        string memory tokenSymbol,
        uint8 tokenDecimals,
        address[] memory initialHolders,
        uint256[] memory mintAmounts,
        IForwarderRegistry forwarderRegistry
    ) ERC20Detailed(tokenName, tokenSymbol, tokenDecimals) ForwarderRegistryContext(forwarderRegistry) ContractOwnership(msg.sender) {
        ERC20Storage.layout().batchMint(initialHolders, mintAmounts);
    }

    function _msgSender() internal view virtual override(Context, ForwarderRegistryContextBase) returns (address) {
        return ForwarderRegistryContextBase._msgSender();
    }

    function _msgData() internal view virtual override(Context, ForwarderRegistryContextBase) returns (bytes calldata) {
        return ForwarderRegistryContextBase._msgData();
    }
}

{
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 99999
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

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IForwarderRegistry","name":"forwarderRegistry","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[],"name":"DOMAIN_SEPARATOR","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"value","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"result","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"balance","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"recipients","type":"address[]"},{"internalType":"uint256[]","name":"values","type":"uint256[]"}],"name":"batchTransfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address[]","name":"recipients","type":"address[]"},{"internalType":"uint256[]","name":"values","type":"uint256[]"}],"name":"batchTransferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"result","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"forwarderRegistry","outputs":[{"internalType":"contract IForwarderRegistry","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"result","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"forwarder","type":"address"}],"name":"isTrustedForwarder","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"nonces","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"uint256","name":"deadline","type":"uint256"},{"internalType":"uint8","name":"v","type":"uint8"},{"internalType":"bytes32","name":"r","type":"bytes32"},{"internalType":"bytes32","name":"s","type":"bytes32"}],"name":"permit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"accounts","type":"address[]"},{"internalType":"contract IERC20[]","name":"tokens","type":"address[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"name":"recoverERC20s","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"accounts","type":"address[]"},{"internalType":"contract IERC721[]","name":"contracts","type":"address[]"},{"internalType":"uint256[]","name":"tokenIds","type":"uint256[]"}],"name":"recoverERC721s","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address payable[]","name":"accounts","type":"address[]"},{"internalType":"uint256[]","name":"amounts","type":"uint256[]"}],"name":"recoverETH","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"safeTransferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"uri","type":"string"}],"name":"setTokenURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"supply","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"result","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"result","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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-----Decoded View---------------
Arg [0] : tokenName (string): BENJI
Arg [1] : tokenSymbol (string): BENJI
Arg [2] : tokenDecimals (uint8): 18
Arg [3] : initialHolders (address[]): 0x5c3b01C47Aa7e64B669FB262521904BC54C8d643,0x08A8313eB71EEbEfc56BCD5f9584c66Bd552D513,0xC20F3d1Bd9Ba05337DA6933E9dD6e7705c585033,0x4e384Fa3d947fb107f8f882a464425be757D84D7
Arg [4] : mintAmounts (uint256[]): 1000000000000000000000000000,625000000000000000000000000,235000000000000000000000000,200000000000000000000000000
Arg [5] : forwarderRegistry (address): 0x3f547F87251710F70109Ae0409d461b270709693

-----Encoded View---------------
20 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000100
Arg [2] : 0000000000000000000000000000000000000000000000000000000000000012
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000140
Arg [4] : 00000000000000000000000000000000000000000000000000000000000001e0
Arg [5] : 0000000000000000000000003f547f87251710f70109ae0409d461b270709693
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000005
Arg [7] : 42454e4a49000000000000000000000000000000000000000000000000000000
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000005
Arg [9] : 42454e4a49000000000000000000000000000000000000000000000000000000
Arg [10] : 0000000000000000000000000000000000000000000000000000000000000004
Arg [11] : 0000000000000000000000005c3b01c47aa7e64b669fb262521904bc54c8d643
Arg [12] : 00000000000000000000000008a8313eb71eebefc56bcd5f9584c66bd552d513
Arg [13] : 000000000000000000000000c20f3d1bd9ba05337da6933e9dd6e7705c585033
Arg [14] : 0000000000000000000000004e384fa3d947fb107f8f882a464425be757d84d7
Arg [15] : 0000000000000000000000000000000000000000000000000000000000000004
Arg [16] : 0000000000000000000000000000000000000000033b2e3c9fd0803ce8000000
Arg [17] : 00000000000000000000000000000000000000000204fce5e3e2502611000000
Arg [18] : 000000000000000000000000000000000000000000c2632f86d61e22cb000000
Arg [19] : 000000000000000000000000000000000000000000a56fa5b99019a5c8000000