convert 2 spaces to 4 spaces
This commit is contained in:
Francisco Giordano
@ -15,167 +15,167 @@ import "../math/SafeMath.sol";
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* owner.
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*/
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contract TokenVesting is Initializable, Ownable {
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using SafeMath for uint256;
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using SafeERC20 for IERC20;
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using SafeMath for uint256;
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using SafeERC20 for IERC20;
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event Released(uint256 amount);
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event Revoked();
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event Released(uint256 amount);
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event Revoked();
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// beneficiary of tokens after they are released
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address private _beneficiary;
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// beneficiary of tokens after they are released
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address private _beneficiary;
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uint256 private _cliff;
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uint256 private _start;
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uint256 private _duration;
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uint256 private _cliff;
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uint256 private _start;
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uint256 private _duration;
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bool private _revocable;
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bool private _revocable;
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mapping (address => uint256) private _released;
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mapping (address => bool) private _revoked;
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mapping (address => uint256) private _released;
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mapping (address => bool) private _revoked;
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/**
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* @dev Creates a vesting contract that vests its balance of any ERC20 token to the
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* beneficiary, gradually in a linear fashion until start + duration. By then all
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* of the balance will have vested.
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* @param beneficiary address of the beneficiary to whom vested tokens are transferred
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* @param cliffDuration duration in seconds of the cliff in which tokens will begin to vest
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* @param start the time (as Unix time) at which point vesting starts
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* @param duration duration in seconds of the period in which the tokens will vest
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* @param revocable whether the vesting is revocable or not
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*/
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function initialize(
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address beneficiary,
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uint256 start,
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uint256 cliffDuration,
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uint256 duration,
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bool revocable,
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address sender
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)
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public
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initializer
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{
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Ownable.initialize(sender);
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/**
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* @dev Creates a vesting contract that vests its balance of any ERC20 token to the
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* beneficiary, gradually in a linear fashion until start + duration. By then all
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* of the balance will have vested.
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* @param beneficiary address of the beneficiary to whom vested tokens are transferred
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* @param cliffDuration duration in seconds of the cliff in which tokens will begin to vest
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* @param start the time (as Unix time) at which point vesting starts
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* @param duration duration in seconds of the period in which the tokens will vest
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* @param revocable whether the vesting is revocable or not
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*/
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function initialize(
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address beneficiary,
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uint256 start,
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uint256 cliffDuration,
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uint256 duration,
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bool revocable,
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address sender
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)
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public
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initializer
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{
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Ownable.initialize(sender);
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require(beneficiary != address(0));
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require(cliffDuration <= duration);
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require(beneficiary != address(0));
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require(cliffDuration <= duration);
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_beneficiary = beneficiary;
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_revocable = revocable;
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_duration = duration;
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_cliff = start.add(cliffDuration);
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_start = start;
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}
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/**
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* @return the beneficiary of the tokens.
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*/
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function beneficiary() public view returns(address) {
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return _beneficiary;
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}
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/**
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* @return the cliff time of the token vesting.
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*/
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function cliff() public view returns(uint256) {
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return _cliff;
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}
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/**
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* @return the start time of the token vesting.
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*/
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function start() public view returns(uint256) {
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return _start;
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}
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/**
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* @return the duration of the token vesting.
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*/
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function duration() public view returns(uint256) {
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return _duration;
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}
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/**
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* @return true if the vesting is revocable.
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*/
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function revocable() public view returns(bool) {
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return _revocable;
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}
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/**
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* @return the amount of the token released.
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*/
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function released(address token) public view returns(uint256) {
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return _released[token];
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}
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/**
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* @return true if the token is revoked.
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*/
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function revoked(address token) public view returns(bool) {
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return _revoked[token];
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}
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/**
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* @notice Transfers vested tokens to beneficiary.
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* @param token ERC20 token which is being vested
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*/
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function release(IERC20 token) public {
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uint256 unreleased = releasableAmount(token);
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require(unreleased > 0);
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_released[token] = _released[token].add(unreleased);
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token.safeTransfer(_beneficiary, unreleased);
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emit Released(unreleased);
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}
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/**
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* @notice Allows the owner to revoke the vesting. Tokens already vested
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* remain in the contract, the rest are returned to the owner.
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* @param token ERC20 token which is being vested
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*/
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function revoke(IERC20 token) public onlyOwner {
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require(_revocable);
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require(!_revoked[token]);
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uint256 balance = token.balanceOf(address(this));
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uint256 unreleased = releasableAmount(token);
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uint256 refund = balance.sub(unreleased);
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_revoked[token] = true;
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token.safeTransfer(owner(), refund);
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emit Revoked();
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}
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/**
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* @dev Calculates the amount that has already vested but hasn't been released yet.
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* @param token ERC20 token which is being vested
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*/
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function releasableAmount(IERC20 token) public view returns (uint256) {
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return vestedAmount(token).sub(_released[token]);
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}
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/**
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* @dev Calculates the amount that has already vested.
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* @param token ERC20 token which is being vested
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*/
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function vestedAmount(IERC20 token) public view returns (uint256) {
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uint256 currentBalance = token.balanceOf(this);
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uint256 totalBalance = currentBalance.add(_released[token]);
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if (block.timestamp < _cliff) {
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return 0;
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} else if (block.timestamp >= _start.add(_duration) || _revoked[token]) {
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return totalBalance;
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} else {
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return totalBalance.mul(block.timestamp.sub(_start)).div(_duration);
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_beneficiary = beneficiary;
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_revocable = revocable;
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_duration = duration;
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_cliff = start.add(cliffDuration);
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_start = start;
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}
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}
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uint256[50] private ______gap;
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/**
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* @return the beneficiary of the tokens.
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*/
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function beneficiary() public view returns(address) {
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return _beneficiary;
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}
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/**
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* @return the cliff time of the token vesting.
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*/
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function cliff() public view returns(uint256) {
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return _cliff;
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}
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/**
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* @return the start time of the token vesting.
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*/
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function start() public view returns(uint256) {
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return _start;
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}
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/**
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* @return the duration of the token vesting.
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*/
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function duration() public view returns(uint256) {
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return _duration;
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}
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/**
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* @return true if the vesting is revocable.
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*/
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function revocable() public view returns(bool) {
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return _revocable;
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}
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/**
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* @return the amount of the token released.
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*/
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function released(address token) public view returns(uint256) {
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return _released[token];
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}
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/**
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* @return true if the token is revoked.
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*/
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function revoked(address token) public view returns(bool) {
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return _revoked[token];
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}
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/**
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* @notice Transfers vested tokens to beneficiary.
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* @param token ERC20 token which is being vested
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*/
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function release(IERC20 token) public {
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uint256 unreleased = releasableAmount(token);
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require(unreleased > 0);
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_released[token] = _released[token].add(unreleased);
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token.safeTransfer(_beneficiary, unreleased);
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emit Released(unreleased);
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}
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/**
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* @notice Allows the owner to revoke the vesting. Tokens already vested
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* remain in the contract, the rest are returned to the owner.
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* @param token ERC20 token which is being vested
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*/
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function revoke(IERC20 token) public onlyOwner {
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require(_revocable);
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require(!_revoked[token]);
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uint256 balance = token.balanceOf(address(this));
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uint256 unreleased = releasableAmount(token);
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uint256 refund = balance.sub(unreleased);
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_revoked[token] = true;
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token.safeTransfer(owner(), refund);
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emit Revoked();
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}
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/**
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* @dev Calculates the amount that has already vested but hasn't been released yet.
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* @param token ERC20 token which is being vested
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*/
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function releasableAmount(IERC20 token) public view returns (uint256) {
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return vestedAmount(token).sub(_released[token]);
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}
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/**
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* @dev Calculates the amount that has already vested.
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* @param token ERC20 token which is being vested
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*/
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function vestedAmount(IERC20 token) public view returns (uint256) {
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uint256 currentBalance = token.balanceOf(this);
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uint256 totalBalance = currentBalance.add(_released[token]);
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if (block.timestamp < _cliff) {
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return 0;
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} else if (block.timestamp >= _start.add(_duration) || _revoked[token]) {
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return totalBalance;
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} else {
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return totalBalance.mul(block.timestamp.sub(_start)).div(_duration);
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}
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}
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uint256[50] private ______gap;
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}
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