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