Contract

Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE

More Options

• Similar
• Compare

// SPDX-License-Identifier: MIT
pragma solidity >0.6.0 <0.8.0;

import "./token/LinkERC20.sol";
import "./ERC677.sol";
import "./ITypeAndVersion.sol";

/// @dev LinkToken, an ERC20/ERC677 Chainlink token with 1 billion supply
contract LinkToken is ITypeAndVersion, LinkERC20, ERC677 {
  uint private constant TOTAL_SUPPLY = 10**27;
  string private constant NAME = 'ChainLink Token';
  string private constant SYMBOL = 'LINK';

  constructor()
    ERC20(NAME, SYMBOL)
    public
  {
    _onCreate();
  }

  /**
   * @notice versions:
   *
   * - LinkToken 0.0.3: added versioning, update name
   * - LinkToken 0.0.2: upgraded to solc 0.6
   * - LinkToken 0.0.1: initial release solc 0.4
   *
   * @inheritdoc ITypeAndVersion
   */
  function typeAndVersion()
    external
    pure
    override
    virtual
    returns (string memory)
  {
    return "LinkToken 0.0.3";
  }

  /**
   * @dev Hook that is called when this contract is created.
   * Useful to override constructor behaviour in child contracts (e.g., LINK bridge tokens).
   * @notice Default implementation mints 10**27 tokens to msg.sender
   */
  function _onCreate()
    internal
    virtual
  {
    _mint(msg.sender, TOTAL_SUPPLY);
  }

  /**
   * @dev Check if recepient is a valid address before transfer
   * @inheritdoc ERC20
   */
  function _transfer(
    address sender,
    address recipient,
    uint256 amount
  )
    internal
    override
    virtual
    validAddress(recipient)
  {
    super._transfer(sender, recipient, amount);
  }

  /**
   * @dev Check if spender is a valid address before approval
   * @inheritdoc ERC20
   */
  function _approve(
    address owner,
    address spender,
    uint256 amount
  )
    internal
    override
    virtual
    validAddress(spender)
  {
    super._approve(owner, spender, amount);
  }

  /**
   * @dev Check if recipient is valid (not this contract address)
   * @param recipient the account we transfer/approve to
   */
  modifier validAddress(
    address recipient
  )
    virtual
  {
    require(recipient != address(this), "LinkToken: transfer/approve to this contract address");
    _;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity >0.6.0 <0.8.0;

import "../../../vendor/OpenZeppelin/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol";

abstract contract LinkERC20 is ERC20 {
  /**
   * @dev Atomically increases the allowance granted to `spender` by the caller.
   *
   * This is an alternative to {approve} that can be used as a mitigation for
   * problems described in {IERC20-approve}.
   *
   * Emits an {Approval} event indicating the updated allowance.
   *
   * Requirements:
   *
   * - `spender` cannot be the zero address.
   */
  function increaseApproval(
    address spender,
    uint256 addedValue
  )
    public
    virtual
    returns (bool)
  {
    return super.increaseAllowance(spender, addedValue);
  }

  /**
   * @dev Atomically decreases the allowance granted to `spender` by the caller.
   *
   * This is an alternative to {approve} that can be used as a mitigation for
   * problems described in {IERC20-approve}.
   *
   * Emits an {Approval} event indicating the updated allowance.
   *
   * Requirements:
   *
   * - `spender` cannot be the zero address.
   * - `spender` must have allowance for the caller of at least
   * `subtractedValue`.
   */
  function decreaseApproval(
    address spender,
    uint256 subtractedValue
  )
    public
    virtual
    returns (bool)
  {
    return super.decreaseAllowance(spender, subtractedValue);
  }
}

// SPDX-License-Identifier: MIT
pragma solidity >0.6.0 <0.8.0;

import "../../vendor/OpenZeppelin/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol";
import "./token/IERC677.sol";
import "./token/IERC677Receiver.sol";

abstract contract ERC677 is IERC677, ERC20 {
  /**
   * @dev transfer token to a contract address with additional data if the recipient is a contact.
   * @param to The address to transfer to.
   * @param value The amount to be transferred.
   * @param data The extra data to be passed to the receiving contract.
   */
  function transferAndCall(
    address to,
    uint value,
    bytes memory data
  )
    public
    override
    virtual
    returns (bool success)
  {
    super.transfer(to, value);
    emit Transfer(msg.sender, to, value, data);
    if (isContract(to)) {
      contractFallback(to, value, data);
    }
    return true;
  }


  // PRIVATE

  function contractFallback(
    address to,
    uint value,
    bytes memory data
  )
    private
  {
    IERC677Receiver receiver = IERC677Receiver(to);
    receiver.onTokenTransfer(msg.sender, value, data);
  }

  function isContract(
    address addr
  )
    private
    view
    returns (bool hasCode)
  {
    uint length;
    assembly { length := extcodesize(addr) }
    return length > 0;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity >0.6.0;

/// @dev Interface contracts should use to report its type and version.
interface ITypeAndVersion {
  /**
   * @dev Returns type and version for the contract.
   *
   * The returned string has the following format: <contract name><SPACE><semver>
   * Try to keep its length less than 32 to take up less contract space.
   */
  function typeAndVersion()
    external
    pure
    returns (string memory);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../../utils/Context.sol";
import "./IERC20.sol";
import "../../math/SafeMath.sol";

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20 {
    using SafeMath for uint256;

    mapping (address => uint256) private _balances;

    mapping (address => mapping (address => uint256)) private _allowances;

    uint256 private _totalSupply;

    string private _name;
    string private _symbol;
    uint8 private _decimals;

    /**
     * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
     * a default value of 18.
     *
     * To select a different value for {decimals}, use {_setupDecimals}.
     *
     * All three of these values are immutable: they can only be set once during
     * construction.
     */
    constructor (string memory name_, string memory symbol_) public {
        _name = name_;
        _symbol = symbol_;
        _decimals = 18;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }

    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5,05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
     * called.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual returns (uint8) {
        return _decimals;
    }

    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }

    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `recipient` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    /**
     * @dev See {IERC20-approve}.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * Requirements:
     *
     * - `sender` and `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     * - the caller must have allowance for ``sender``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }

    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }

    /**
     * @dev Moves tokens `amount` from `sender` to `recipient`.
     *
     * This is internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `sender` cannot be the zero address.
     * - `recipient` cannot be the zero address.
     * - `sender` must have a balance of at least `amount`.
     */
    function _transfer(address sender, address recipient, uint256 amount) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");

        _beforeTokenTransfer(sender, recipient, amount);

        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    /**
     * @dev Sets {decimals} to a value other than the default one of 18.
     *
     * WARNING: This function should only be called from the constructor. Most
     * applications that interact with token contracts will not expect
     * {decimals} to ever change, and may work incorrectly if it does.
     */
    function _setupDecimals(uint8 decimals_) internal virtual {
        _decimals = decimals_;
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be to transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <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 GSN 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 payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @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);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        uint256 c = a + b;
        if (c < a) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the substraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b > a) return (false, 0);
        return (true, a - b);
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) return (true, 0);
        uint256 c = a * b;
        if (c / a != b) return (false, 0);
        return (true, c);
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a / b);
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
        if (b == 0) return (false, 0);
        return (true, a % b);
    }

    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b <= a, "SafeMath: subtraction overflow");
        return a - b;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        if (a == 0) return 0;
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: division by zero");
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        require(b > 0, "SafeMath: modulo by zero");
        return a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        return a - b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryDiv}.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        return a % b;
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >0.6.0 <0.8.0;

import "../../../vendor/OpenZeppelin/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol";

interface IERC677 is IERC20 {
  function transferAndCall(
    address to,
    uint value,
    bytes memory data
  )
    external
    returns (bool success);

  event Transfer(
    address indexed from,
    address indexed to,
    uint value,
    bytes data
  );
}

// SPDX-License-Identifier: MIT
pragma solidity >0.6.0 <0.8.0;

interface IERC677Receiver {
  function onTokenTransfer(
    address sender,
    uint value,
    bytes memory data
  )
    external;
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "../../utils/Context.sol";
import "./ERC20.sol";

/**
 * @dev Extension of {ERC20} that allows token holders to destroy both their own
 * tokens and those that they have an allowance for, in a way that can be
 * recognized off-chain (via event analysis).
 */
abstract contract ERC20Burnable is Context, ERC20 {
    using SafeMath for uint256;

    /**
     * @dev Destroys `amount` tokens from the caller.
     *
     * See {ERC20-_burn}.
     */
    function burn(uint256 amount) public virtual {
        _burn(_msgSender(), amount);
    }

    /**
     * @dev Destroys `amount` tokens from `account`, deducting from the caller's
     * allowance.
     *
     * See {ERC20-_burn} and {ERC20-allowance}.
     *
     * Requirements:
     *
     * - the caller must have allowance for ``accounts``'s tokens of at least
     * `amount`.
     */
    function burnFrom(address account, uint256 amount) public virtual {
        uint256 decreasedAllowance = allowance(account, _msgSender()).sub(amount, "ERC20: burn amount exceeds allowance");

        _approve(account, _msgSender(), decreasedAllowance);
        _burn(account, amount);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >0.6.0 <0.8.0;

import "./Owned.sol";
import "./interfaces/AccessControllerInterface.sol";

/**
 * @title SimpleWriteAccessController
 * @notice Gives access to accounts explicitly added to an access list by the
 * controller's owner.
 * @dev does not make any special permissions for externally, see
 * SimpleReadAccessController for that.
 */
contract SimpleWriteAccessController is AccessControllerInterface, Owned {

  bool public checkEnabled;
  mapping(address => bool) internal accessList;

  event AddedAccess(address user);
  event RemovedAccess(address user);
  event CheckAccessEnabled();
  event CheckAccessDisabled();

  constructor()
    public
  {
    checkEnabled = true;
  }

  /**
   * @notice Returns the access of an address
   * @param _user The address to query
   */
  function hasAccess(
    address _user,
    bytes memory
  )
    public
    view
    virtual
    override
    returns (bool)
  {
    return accessList[_user] || !checkEnabled;
  }

  /**
   * @notice Adds an address to the access list
   * @param _user The address to add
   */
  function addAccess(address _user)
    external
    onlyOwner()
  {
    if (!accessList[_user]) {
      accessList[_user] = true;

      emit AddedAccess(_user);
    }
  }

  /**
   * @notice Removes an address from the access list
   * @param _user The address to remove
   */
  function removeAccess(address _user)
    external
    onlyOwner()
  {
    if (accessList[_user]) {
      accessList[_user] = false;

      emit RemovedAccess(_user);
    }
  }

  /**
   * @notice makes the access check enforced
   */
  function enableAccessCheck()
    external
    onlyOwner()
  {
    if (!checkEnabled) {
      checkEnabled = true;

      emit CheckAccessEnabled();
    }
  }

  /**
   * @notice makes the access check unenforced
   */
  function disableAccessCheck()
    external
    onlyOwner()
  {
    if (checkEnabled) {
      checkEnabled = false;

      emit CheckAccessDisabled();
    }
  }

  /**
   * @dev reverts if the caller does not have access
   */
  modifier checkAccess() {
    require(hasAccess(msg.sender, msg.data), "No access");
    _;
  }
}

// SPDX-License-Identifier: MIT
pragma solidity >0.6.0 <0.8.0;

/**
 * @title The Owned contract
 * @notice A contract with helpers for basic contract ownership.
 */
contract Owned {

  address public owner;
  address private pendingOwner;

  event OwnershipTransferRequested(
    address indexed from,
    address indexed to
  );
  event OwnershipTransferred(
    address indexed from,
    address indexed to
  );

  constructor() public {
    owner = msg.sender;
  }

  /**
   * @dev Allows an owner to begin transferring ownership to a new address,
   * pending.
   */
  function transferOwnership(address _to)
    external
    onlyOwner()
  {
    pendingOwner = _to;

    emit OwnershipTransferRequested(owner, _to);
  }

  /**
   * @dev Allows an ownership transfer to be completed by the recipient.
   */
  function acceptOwnership()
    external
  {
    require(msg.sender == pendingOwner, "Must be proposed owner");

    address oldOwner = owner;
    owner = msg.sender;
    pendingOwner = address(0);

    emit OwnershipTransferred(oldOwner, msg.sender);
  }

  /**
   * @dev Reverts if called by anyone other than the contract owner.
   */
  modifier onlyOwner() {
    require(msg.sender == owner, "Only callable by owner");
    _;
  }

}

// SPDX-License-Identifier: MIT
pragma solidity >0.6.0 <0.8.0;

interface AccessControllerInterface {
  function hasAccess(address user, bytes calldata data) external view returns (bool);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 1000000
  },
  "metadata": {
    "bytecodeHash": "none"
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

[{"inputs":[],"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":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"data","type":"bytes"}],"name":"Transfer","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":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","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":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseApproval","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseApproval","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"}],"name":"transferAndCall","outputs":[{"internalType":"bool","name":"success","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"typeAndVersion","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"pure","type":"function"}]

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