25 lines
802 B
Solidity
25 lines
802 B
Solidity
|
// SPDX-License-Identifier: MIT
|
||
|
|
|
||
|
|
pragma solidity ^0.6.0;
|
||
|
|
|
||
|
|
import "./Escrow.sol";
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @title ConditionalEscrow
|
||
|
|
* @dev Base abstract escrow to only allow withdrawal if a condition is met.
|
||
|
|
* @dev Intended usage: See {Escrow}. Same usage guidelines apply here.
|
||
|
|
*/
|
||
|
|
abstract contract ConditionalEscrow is Escrow {
|
||
|
|
/**
|
||
|
|
* @dev Returns whether an address is allowed to withdraw their funds. To be
|
||
|
|
* implemented by derived contracts.
|
||
|
|
* @param payee The destination address of the funds.
|
||
|
|
*/
|
||
|
|
function withdrawalAllowed(address payee) public view virtual returns (bool);
|
||
|
|
|
||
|
|
function withdraw(address payable payee) public virtual override {
|
||
|
|
require(withdrawalAllowed(payee), "ConditionalEscrow: payee is not allowed to withdraw");
|
||
|
|
super.withdraw(payee);
|
||
|
|
}
|
||
|
|
}
|